fix: continued moving everything to orderedmaps plus cleaned up most the tests

datamodel/high/base/discriminator.go

@@ -21,7 +21,7 @@ import (
 //	v3 - https://spec.openapis.org/oas/v3.1.0#discriminator-object
 type Discriminator struct {
 	PropertyName string                          `json:"propertyName,omitempty" yaml:"propertyName,omitempty"`
-	Mapping      orderedmap.Map[string, string] `json:"mapping,omitempty" yaml:"mapping,omitempty"`
+	Mapping      *orderedmap.Map[string, string] `json:"mapping,omitempty" yaml:"mapping,omitempty"`
 	low          *low.Discriminator
 }
 

datamodel/high/base/dynamic_value_test.go

@@ -127,7 +127,7 @@ func TestDynamicValue_MarshalYAMLInline(t *testing.T) {
 
 	// convert node into yaml
 	bits, _ := yaml.Marshal(rend)
-	assert.Equal(t, "properties:\n    rice:\n        $ref: '#/components/schemas/rice'", strings.TrimSpace(string(bits)))
+	assert.Equal(t, "properties:\n    rice:\n        type: array\n        items:\n            type: string", strings.TrimSpace(string(bits)))
 }
 
 func TestDynamicValue_MarshalYAMLInline_Error(t *testing.T) {

datamodel/high/base/example.go

@@ -17,9 +17,9 @@ import (
 type Example struct {
 	Summary       string                              `json:"summary,omitempty" yaml:"summary,omitempty"`
 	Description   string                              `json:"description,omitempty" yaml:"description,omitempty"`
-	Value         any            `json:"value,omitempty" yaml:"value,omitempty"`
+	Value         *yaml.Node                          `json:"value,omitempty" yaml:"value,omitempty"`
 	ExternalValue string                              `json:"externalValue,omitempty" yaml:"externalValue,omitempty"`
-	Extensions    map[string]any `json:"-" yaml:"-"`
+	Extensions    *orderedmap.Map[string, *yaml.Node] `json:"-" yaml:"-"`
 	low           *low.Example
 }
 
@@ -58,7 +58,7 @@ func (e *Example) MarshalYAML() (interface{}, error) {
 
 // ExtractExamples will convert a low-level example map, into a high level one that is simple to navigate.
 // no fidelity is lost, everything is still available via GoLow()
-func ExtractExamples(elements orderedmap.Map[lowmodel.KeyReference[string], lowmodel.ValueReference[*low.Example]]) orderedmap.Map[string, *Example] {
+func ExtractExamples(elements *orderedmap.Map[lowmodel.KeyReference[string], lowmodel.ValueReference[*low.Example]]) *orderedmap.Map[string, *Example] {
 	extracted := orderedmap.New[string, *Example]()
 	for pair := orderedmap.First(elements); pair != nil; pair = pair.Next() {
 		extracted.Set(pair.Key().Value, NewExample(pair.Value().Value))

datamodel/high/base/example_test.go

@@ -17,7 +17,6 @@ import (
 )
 
 func TestNewExample(t *testing.T) {
-
 	var cNode yaml.Node
 
 	yml := `summary: an example
@@ -37,18 +36,23 @@ x-hack: code`
 	// build high
 	highExample := NewExample(&lowExample)
 
+	var xHack string
+	_ = highExample.Extensions.GetOrZero("x-hack").Decode(&xHack)
+
+	var example string
+	_ = highExample.Value.Decode(&example)
+
 	assert.Equal(t, "an example", highExample.Summary)
 	assert.Equal(t, "something more", highExample.Description)
 	assert.Equal(t, "https://pb33f.io", highExample.ExternalValue)
-	assert.Equal(t, "code", highExample.Extensions["x-hack"])
+	assert.Equal(t, "code", xHack)
-	assert.Equal(t, "a thing", highExample.Value)
+	assert.Equal(t, "a thing", example)
 	assert.Equal(t, 4, highExample.GoLow().ExternalValue.ValueNode.Line)
 	assert.NotNil(t, highExample.GoLowUntyped())
 
 	// render the example as YAML
 	rendered, _ := highExample.Render()
-	assert.Equal(t, strings.TrimSpace(string(rendered)), yml)
+	assert.Equal(t, yml, strings.TrimSpace(string(rendered)))
-
 }
 
 func TestExtractExamples(t *testing.T) {
@@ -71,11 +75,9 @@ func TestExtractExamples(t *testing.T) {
 	)
 
 	assert.Equal(t, "herbs", ExtractExamples(examplesMap).GetOrZero("green").Summary)
-
 }
 
 func ExampleNewExample() {
-
 	// create some example yaml (or can be JSON, it does not matter)
 	yml := `summary: something interesting
 description: something more interesting with detail
@@ -98,5 +100,4 @@ x-hack: code`
 
 	fmt.Print(highExample.ExternalValue)
 	// Output: https://pb33f.io
-
 }

datamodel/high/base/external_doc.go

@@ -6,6 +6,7 @@ package base
 import (
 	"github.com/pb33f/libopenapi/datamodel/high"
 	low "github.com/pb33f/libopenapi/datamodel/low/base"
+	"github.com/pb33f/libopenapi/orderedmap"
 	"gopkg.in/yaml.v3"
 )
 
@@ -18,7 +19,7 @@ import (
 type ExternalDoc struct {
 	Description string                              `json:"description,omitempty" yaml:"description,omitempty"`
 	URL         string                              `json:"url,omitempty" yaml:"url,omitempty"`
-	Extensions  map[string]any `json:"-" yaml:"-"`
+	Extensions  *orderedmap.Map[string, *yaml.Node] `json:"-" yaml:"-"`
 	low         *low.ExternalDoc
 }
 
@@ -46,7 +47,7 @@ func (e *ExternalDoc) GoLowUntyped() any {
 	return e.low
 }
 
-func (e *ExternalDoc) GetExtensions() map[string]any {
+func (e *ExternalDoc) GetExtensions() *orderedmap.Map[string, *yaml.Node] {
 	return e.Extensions
 }
 

datamodel/high/base/external_doc_test.go

@@ -5,17 +5,17 @@ package base
 
 import (
 	"context"
-	"fmt"
-	lowmodel "github.com/pb33f/libopenapi/datamodel/low"
-	lowbase "github.com/pb33f/libopenapi/datamodel/low/base"
-	"github.com/stretchr/testify/assert"
-	"gopkg.in/yaml.v3"
 	"strings"
 	"testing"
+
+	lowmodel "github.com/pb33f/libopenapi/datamodel/low"
+	lowbase "github.com/pb33f/libopenapi/datamodel/low/base"
+	"github.com/pb33f/libopenapi/orderedmap"
+	"github.com/stretchr/testify/assert"
+	"gopkg.in/yaml.v3"
 )
 
 func TestNewExternalDoc(t *testing.T) {
-
 	var cNode yaml.Node
 
 	yml := `description: hack code
@@ -31,22 +31,23 @@ x-hack: code`
 
 	highExt := NewExternalDoc(&lowExt)
 
+	var xHack string
+	_ = highExt.Extensions.GetOrZero("x-hack").Decode(&xHack)
+
 	assert.Equal(t, "hack code", highExt.Description)
 	assert.Equal(t, "https://pb33f.io", highExt.URL)
-	assert.Equal(t, "code", highExt.Extensions["x-hack"])
+	assert.Equal(t, "code", xHack)
 
 	wentLow := highExt.GoLow()
 	assert.Equal(t, 2, wentLow.URL.ValueNode.Line)
-	assert.Len(t, highExt.GetExtensions(), 1)
+	assert.Equal(t, 1, orderedmap.Len(highExt.GetExtensions()))
 
 	// render the high-level object as YAML
 	rendered, _ := highExt.Render()
 	assert.Equal(t, strings.TrimSpace(string(rendered)), yml)
-
 }
 
-func ExampleNewExternalDoc() {
+func TestExampleNewExternalDoc(t *testing.T) {
-
 	// create a new external documentation spec reference
 	// this can be YAML or JSON.
 	yml := `description: hack code docs
@@ -67,7 +68,8 @@ x-hack: code`
 	// create new high-level ExternalDoc
 	highExt := NewExternalDoc(&lowExt)
 
-	// print out a extension
+	var xHack string
-	fmt.Print(highExt.Extensions["x-hack"])
+	_ = highExt.Extensions.GetOrZero("x-hack").Decode(&xHack)
-	// Output: code
+
+	assert.Equal(t, "code", xHack)
 }

datamodel/high/base/info.go

@@ -6,6 +6,7 @@ package base
 import (
 	"github.com/pb33f/libopenapi/datamodel/high"
 	low "github.com/pb33f/libopenapi/datamodel/low/base"
+	"github.com/pb33f/libopenapi/orderedmap"
 	"gopkg.in/yaml.v3"
 )
 
@@ -24,7 +25,7 @@ type Info struct {
 	Contact        *Contact                            `json:"contact,omitempty" yaml:"contact,omitempty"`
 	License        *License                            `json:"license,omitempty" yaml:"license,omitempty"`
 	Version        string                              `json:"version,omitempty" yaml:"version,omitempty"`
-	Extensions     map[string]any
+	Extensions     *orderedmap.Map[string, *yaml.Node] `json:"-" yaml:"-"`
 	low            *low.Info
 }
 
@@ -53,7 +54,7 @@ func NewInfo(info *low.Info) *Info {
 	if !info.Version.IsEmpty() {
 		i.Version = info.Version.Value
 	}
-	if len(info.Extensions) > 0 {
+	if orderedmap.Len(info.Extensions) > 0 {
 		i.Extensions = high.ExtractExtensions(info.Extensions)
 	}
 	return i

datamodel/high/base/info_test.go

@@ -10,6 +10,8 @@ import (
 
 	lowmodel "github.com/pb33f/libopenapi/datamodel/low"
 	lowbase "github.com/pb33f/libopenapi/datamodel/low/base"
+	"github.com/pb33f/libopenapi/orderedmap"
+	"github.com/pb33f/libopenapi/utils"
 	"github.com/stretchr/testify/assert"
 	"gopkg.in/yaml.v3"
 )
@@ -37,6 +39,9 @@ x-cli-name: chicken cli`
 
 	highInfo := NewInfo(&lowInfo)
 
+	var xCliName string
+	_ = highInfo.Extensions.GetOrZero("x-cli-name").Decode(&xCliName)
+
 	assert.Equal(t, "chicken", highInfo.Title)
 	assert.Equal(t, "a chicken nugget", highInfo.Summary)
 	assert.Equal(t, "nugget", highInfo.Description)
@@ -45,7 +50,7 @@ x-cli-name: chicken cli`
 	assert.Equal(t, "pb33f", highInfo.License.Name)
 	assert.Equal(t, "https://pb33f.io", highInfo.License.URL)
 	assert.Equal(t, "99.99", highInfo.Version)
-	assert.Equal(t, "chicken cli", highInfo.Extensions["x-cli-name"])
+	assert.Equal(t, "chicken cli", xCliName)
 
 	wentLow := highInfo.GoLow()
 	assert.Equal(t, 10, wentLow.Version.ValueNode.Line)
@@ -109,13 +114,12 @@ url: https://opensource.org/licenses/MIT`
 }
 
 func TestInfo_Render(t *testing.T) {
-
+	ext := orderedmap.New[string, *yaml.Node]()
-	ext := make(map[string]any)
+	ext.Set("x-pizza", utils.CreateStringNode("pepperoni"))
-	ext["x-pizza"] = "pepperoni"
+	ext.Set("x-cake", utils.CreateYamlNode(&License{
-	ext["x-cake"] = &License{
 		Name: "someone",
 		URL:  "nowhere",
-	}
+	}))
 	highI := &Info{
 		Title:          "hey",
 		Description:    "there you",
@@ -146,6 +150,9 @@ func TestInfo_Render(t *testing.T) {
 	// build high
 	highInfo := NewInfo(&lowInfo)
 
+	var xPizza string
+	_ = highInfo.Extensions.GetOrZero("x-pizza").Decode(&xPizza)
+
 	assert.Equal(t, "hey", highInfo.Title)
 	assert.Equal(t, "there you", highInfo.Description)
 	assert.Equal(t, "have you got any money", highInfo.TermsOfService)
@@ -154,12 +161,11 @@ func TestInfo_Render(t *testing.T) {
 	assert.Equal(t, "MIT", highInfo.License.Name)
 	assert.Equal(t, "https://opensource.org/licenses/MIT", highInfo.License.URL)
 	assert.Equal(t, "1.2.3", highInfo.Version)
-	assert.Equal(t, "pepperoni", highInfo.Extensions["x-pizza"])
+	assert.Equal(t, "pepperoni", xPizza)
 	assert.NotNil(t, highInfo.GoLowUntyped())
 }
 
 func TestInfo_RenderOrder(t *testing.T) {
-
 	yml := `title: hey
 description: there you
 termsOfService: have you got any money
@@ -187,6 +193,9 @@ x-cake:
 	// build high
 	highInfo := NewInfo(&lowInfo)
 
+	var xPizza string
+	_ = highInfo.Extensions.GetOrZero("x-pizza").Decode(&xPizza)
+
 	assert.Equal(t, "hey", highInfo.Title)
 	assert.Equal(t, "there you", highInfo.Description)
 	assert.Equal(t, "have you got any money", highInfo.TermsOfService)
@@ -195,7 +204,7 @@ x-cake:
 	assert.Equal(t, "MIT", highInfo.License.Name)
 	assert.Equal(t, "https://opensource.org/licenses/MIT", highInfo.License.URL)
 	assert.Equal(t, "1.2.3", highInfo.Version)
-	assert.Equal(t, "pepperoni", highInfo.Extensions["x-pizza"])
+	assert.Equal(t, "pepperoni", xPizza)
 
 	// marshal high back to yaml, should be the same as the original, in same order.
 	bytes, _ := highInfo.Render()

datamodel/high/base/schema.go

@@ -45,7 +45,7 @@ type Schema struct {
 	Discriminator *Discriminator `json:"discriminator,omitempty" yaml:"discriminator,omitempty"`
 
 	// in 3.1 examples can be an array (which is recommended)
-	Examples []any `json:"examples,omitempty" yaml:"examples,omitempty"`
+	Examples []*yaml.Node `json:"examples,omitempty" yaml:"examples,omitempty"`
 
 	// in 3.1 prefixItems provides tuple validation support.
 	PrefixItems []*SchemaProxy `json:"prefixItems,omitempty" yaml:"prefixItems,omitempty"`
@@ -57,8 +57,8 @@ type Schema struct {
 	If                *SchemaProxy                          `json:"if,omitempty" yaml:"if,omitempty"`
 	Else              *SchemaProxy                          `json:"else,omitempty" yaml:"else,omitempty"`
 	Then              *SchemaProxy                          `json:"then,omitempty" yaml:"then,omitempty"`
-	DependentSchemas  orderedmap.Map[string, *SchemaProxy] `json:"dependentSchemas,omitempty" yaml:"dependentSchemas,omitempty"`
+	DependentSchemas  *orderedmap.Map[string, *SchemaProxy] `json:"dependentSchemas,omitempty" yaml:"dependentSchemas,omitempty"`
-	PatternProperties orderedmap.Map[string, *SchemaProxy] `json:"patternProperties,omitempty" yaml:"patternProperties,omitempty"`
+	PatternProperties *orderedmap.Map[string, *SchemaProxy] `json:"patternProperties,omitempty" yaml:"patternProperties,omitempty"`
 	PropertyNames     *SchemaProxy                          `json:"propertyNames,omitempty" yaml:"propertyNames,omitempty"`
 	UnevaluatedItems  *SchemaProxy                          `json:"unevaluatedItems,omitempty" yaml:"unevaluatedItems,omitempty"`
 
@@ -74,7 +74,7 @@ type Schema struct {
 
 	// Compatible with all versions
 	Not                  *SchemaProxy                          `json:"not,omitempty" yaml:"not,omitempty"`
-	Properties           orderedmap.Map[string, *SchemaProxy] `json:"properties,omitempty" yaml:"properties,omitempty"`
+	Properties           *orderedmap.Map[string, *SchemaProxy] `json:"properties,omitempty" yaml:"properties,omitempty"`
 	Title                string                                `json:"title,omitempty" yaml:"title,omitempty"`
 	MultipleOf           *float64                              `json:"multipleOf,omitempty" yaml:"multipleOf,omitempty"`
 	Maximum              *float64                              `json:"maximum,renderZero,omitempty" yaml:"maximum,renderZero,omitempty"`
@@ -89,19 +89,19 @@ type Schema struct {
 	MaxProperties        *int64                                `json:"maxProperties,omitempty" yaml:"maxProperties,omitempty"`
 	MinProperties        *int64                                `json:"minProperties,omitempty" yaml:"minProperties,omitempty"`
 	Required             []string                              `json:"required,omitempty" yaml:"required,omitempty"`
-	Enum                 []any                   `json:"enum,omitempty" yaml:"enum,omitempty"`
+	Enum                 []*yaml.Node                          `json:"enum,omitempty" yaml:"enum,omitempty"`
 	AdditionalProperties *DynamicValue[*SchemaProxy, bool]     `json:"additionalProperties,renderZero,omitempty" yaml:"additionalProperties,renderZero,omitempty"`
 	Description          string                                `json:"description,omitempty" yaml:"description,omitempty"`
-	Default              any                     `json:"default,omitempty" yaml:"default,renderZero,omitempty"`
+	Default              *yaml.Node                            `json:"default,omitempty" yaml:"default,renderZero,omitempty"`
-	Const                any                     `json:"const,omitempty" yaml:"const,renderZero,omitempty"`
+	Const                *yaml.Node                            `json:"const,omitempty" yaml:"const,renderZero,omitempty"`
 	Nullable             *bool                                 `json:"nullable,omitempty" yaml:"nullable,omitempty"`
-	ReadOnly             bool                    `json:"readOnly,omitempty" yaml:"readOnly,omitempty"`   // https://github.com/pb33f/libopenapi/issues/30
+	ReadOnly             *bool                                 `json:"readOnly,renderZero,omitempty" yaml:"readOnly,renderZero,omitempty"`   // https://github.com/pb33f/libopenapi/issues/30
-	WriteOnly            bool                    `json:"writeOnly,omitempty" yaml:"writeOnly,omitempty"` // https://github.com/pb33f/libopenapi/issues/30
+	WriteOnly            *bool                                 `json:"writeOnly,renderZero,omitempty" yaml:"writeOnly,renderZero,omitempty"` // https://github.com/pb33f/libopenapi/issues/30
 	XML                  *XML                                  `json:"xml,omitempty" yaml:"xml,omitempty"`
 	ExternalDocs         *ExternalDoc                          `json:"externalDocs,omitempty" yaml:"externalDocs,omitempty"`
-	Example              any                     `json:"example,omitempty" yaml:"example,omitempty"`
+	Example              *yaml.Node                            `json:"example,omitempty" yaml:"example,omitempty"`
 	Deprecated           *bool                                 `json:"deprecated,omitempty" yaml:"deprecated,omitempty"`
-	Extensions           map[string]any          `json:"-" yaml:"-"`
+	Extensions           *orderedmap.Map[string, *yaml.Node]   `json:"-" yaml:"-"`
 	low                  *base.Schema
 
 	// Parent Proxy refers back to the low level SchemaProxy that is proxying this schema.
@@ -266,17 +266,17 @@ func NewSchema(schema *base.Schema) *Schema {
 		s.Nullable = &schema.Nullable.Value
 	}
 	if !schema.ReadOnly.IsEmpty() {
-		s.ReadOnly = schema.ReadOnly.Value
+		s.ReadOnly = &schema.ReadOnly.Value
 	}
 	if !schema.WriteOnly.IsEmpty() {
-		s.WriteOnly = schema.WriteOnly.Value
+		s.WriteOnly = &schema.WriteOnly.Value
 	}
 	if !schema.Deprecated.IsEmpty() {
 		s.Deprecated = &schema.Deprecated.Value
 	}
 	s.Example = schema.Example.Value
 	if len(schema.Examples.Value) > 0 {
-		examples := make([]any, len(schema.Examples.Value))
+		examples := make([]*yaml.Node, len(schema.Examples.Value))
 		for i := 0; i < len(schema.Examples.Value); i++ {
 			examples[i] = schema.Examples.Value[i].Value
 		}
@@ -298,11 +298,11 @@ func NewSchema(schema *base.Schema) *Schema {
 	}
 	s.Required = req
 
-	var enum []any
 	if !schema.Anchor.IsEmpty() {
 		s.Anchor = schema.Anchor.Value
 	}
 
+	var enum []*yaml.Node
 	for i := range schema.Enum.Value {
 		enum = append(enum, schema.Enum.Value[i].Value)
 	}
@@ -322,11 +322,13 @@ func NewSchema(schema *base.Schema) *Schema {
 
 	// for every item, build schema async
 	buildSchema := func(sch lowmodel.ValueReference[*base.SchemaProxy], idx int, bChan chan buildResult) {
-		p := NewSchemaProxy(&lowmodel.NodeReference[*base.SchemaProxy]{
+		n := &lowmodel.NodeReference[*base.SchemaProxy]{
-			ValueNode: sch.ValueNode,
+			ValueNode: sch.GetValueNode(),
 			Value:     sch.Value,
-			Reference: sch.GetReference(),
+		}
-		})
+		n.SetReference(sch.GetReference(), sch.GetValueNode())
+
+		p := NewSchemaProxy(n)
 
 		bChan <- buildResult{idx: idx, s: p}
 	}
@@ -353,7 +355,7 @@ func NewSchema(schema *base.Schema) *Schema {
 
 	// props async
 	buildProps := func(k lowmodel.KeyReference[string], v lowmodel.ValueReference[*base.SchemaProxy],
-		props orderedmap.Map[string, *SchemaProxy], sw int,
+		props *orderedmap.Map[string, *SchemaProxy], sw int,
 	) {
 		props.Set(k.Value, NewSchemaProxy(&lowmodel.NodeReference[*base.SchemaProxy]{
 			Value:     v.Value,

datamodel/high/base/schema_proxy.go

@@ -4,13 +4,14 @@
 package base
 
 import (
+	"sync"
+
 	"github.com/pb33f/libopenapi/datamodel/high"
 	"github.com/pb33f/libopenapi/datamodel/low"
 	"github.com/pb33f/libopenapi/datamodel/low/base"
 	"github.com/pb33f/libopenapi/index"
 	"github.com/pb33f/libopenapi/utils"
 	"gopkg.in/yaml.v3"
-	"sync"
 )
 
 // SchemaProxy exists as a stub that will create a Schema once (and only once) the Schema() method is called. An
@@ -98,11 +99,15 @@ func (sp *SchemaProxy) Schema() *Schema {
 
 // IsReference returns true if the SchemaProxy is a reference to another Schema.
 func (sp *SchemaProxy) IsReference() bool {
+	if sp == nil {
+		return false
+	}
+
 	if sp.refStr != "" {
 		return true
 	}
 	if sp.schema != nil {
-		return sp.schema.Value.IsSchemaReference()
+		return sp.schema.Value.IsReference()
 	}
 	return false
 }
@@ -112,7 +117,14 @@ func (sp *SchemaProxy) GetReference() string {
 	if sp.refStr != "" {
 		return sp.refStr
 	}
-	return sp.schema.Value.GetSchemaReference()
+	return sp.schema.GetValue().GetReference()
+}
+
+func (sp *SchemaProxy) GetReferenceNode() *yaml.Node {
+	if sp.refStr != "" {
+		return nil
+	}
+	return sp.schema.GetValue().GetReferenceNode()
 }
 
 // GetReferenceOrigin returns a pointer to the index.NodeOrigin of the $ref if this SchemaProxy is a reference to another Schema.
@@ -171,12 +183,13 @@ func (sp *SchemaProxy) MarshalYAML() (interface{}, error) {
 		nb := high.NewNodeBuilder(s, s.low)
 		return nb.Render(), nil
 	} else {
+		refNode := sp.GetReferenceNode()
+		if refNode != nil {
+			return refNode, nil
+		}
+
 		// do not build out a reference, just marshal the reference.
-		mp := utils.CreateEmptyMapNode()
+		return utils.CreateRefNode(sp.GetReference()), nil
-		mp.Content = append(mp.Content,
-			utils.CreateStringNode("$ref"),
-			utils.CreateStringNode(sp.GetReference()))
-		return mp, nil
 	}
 }
 

datamodel/high/base/schema_test.go

@@ -306,8 +306,8 @@ $anchor: anchor`
 	assert.Equal(t, "string", compiled.PropertyNames.Schema().Type[0])
 	assert.Equal(t, "boolean", compiled.UnevaluatedItems.Schema().Type[0])
 	assert.Equal(t, "integer", compiled.UnevaluatedProperties.A.Schema().Type[0])
-	assert.True(t, compiled.ReadOnly)
+	assert.True(t, *compiled.ReadOnly)
-	assert.True(t, compiled.WriteOnly)
+	assert.True(t, *compiled.WriteOnly)
 	assert.True(t, *compiled.Deprecated)
 	assert.True(t, *compiled.Nullable)
 	assert.Equal(t, "anchor", compiled.Anchor)
@@ -548,7 +548,7 @@ func TestSchemaProxy_GoLow(t *testing.T) {
 
 	sp := NewSchemaProxy(&lowRef)
 	assert.Equal(t, lowProxy, sp.GoLow())
-	assert.Equal(t, ref, sp.GoLow().GetSchemaReference())
+	assert.Equal(t, ref, sp.GoLow().GetReference())
 	assert.Equal(t, ref, sp.GoLow().GetReference())
 
 	spNil := NewSchemaProxy(nil)
@@ -703,7 +703,14 @@ examples:
 `
 	highSchema := getHighSchema(t, yml)
 
-	assert.Equal(t, []any{int64(5), int64(10)}, highSchema.Examples)
+	examples := []any{}
+	for _, ex := range highSchema.Examples {
+		var v int64
+		assert.NoError(t, ex.Decode(&v))
+		examples = append(examples, v)
+	}
+
+	assert.Equal(t, []any{int64(5), int64(10)}, examples)
 }
 
 func ExampleNewSchema() {
@@ -1123,7 +1130,7 @@ components:
 
 	// now render it out, it should be identical.
 	schemaBytes, _ := compiled.RenderInline()
-	assert.Len(t, schemaBytes, 585)
+	assert.Equal(t, "properties:\n    bigBank:\n        type: object\n        properties:\n            failure_balance_transaction:\n                allOf:\n                    - type: object\n                      properties:\n                        name:\n                            type: string\n                        price:\n                            type: number\n                      anyOf:\n                        - description: A balance transaction\n                anyOf:\n                    - maxLength: 5000\n                      type: string\n                    - description: A balance transaction\n", string(schemaBytes))
 }
 
 func TestUnevaluatedPropertiesBoolean_True(t *testing.T) {

datamodel/high/base/security_requirement.go

@@ -21,7 +21,7 @@ import (
 // The name used for each property MUST correspond to a security scheme declared in the Security Definitions
 //   - https://swagger.io/specification/v2/#securityDefinitionsObject
 type SecurityRequirement struct {
-	Requirements orderedmap.Map[string, []string] `json:"-" yaml:"-"`
+	Requirements *orderedmap.Map[string, []string] `json:"-" yaml:"-"`
 	low          *base.SecurityRequirement
 }
 
@@ -59,7 +59,6 @@ func (s *SecurityRequirement) Render() ([]byte, error) {
 
 // MarshalYAML will create a ready to render YAML representation of the SecurityRequirement object.
 func (s *SecurityRequirement) MarshalYAML() (interface{}, error) {
-
 	type req struct {
 		line   int
 		key    string

datamodel/high/base/tag.go

@@ -6,6 +6,7 @@ package base
 import (
 	"github.com/pb33f/libopenapi/datamodel/high"
 	low "github.com/pb33f/libopenapi/datamodel/low/base"
+	"github.com/pb33f/libopenapi/orderedmap"
 	"gopkg.in/yaml.v3"
 )
 
@@ -19,7 +20,7 @@ type Tag struct {
 	Name         string       `json:"name,omitempty" yaml:"name,omitempty"`
 	Description  string       `json:"description,omitempty" yaml:"description,omitempty"`
 	ExternalDocs *ExternalDoc `json:"externalDocs,omitempty" yaml:"externalDocs,omitempty"`
-	Extensions   map[string]any
+	Extensions   *orderedmap.Map[string, *yaml.Node]
 	low          *low.Tag
 }
 

datamodel/high/base/tag_test.go

@@ -16,7 +16,6 @@ import (
 )
 
 func TestNewTag(t *testing.T) {
-
 	var cNode yaml.Node
 
 	yml := `name: chicken
@@ -33,10 +32,13 @@ x-hack: code`
 
 	highTag := NewTag(&lowTag)
 
+	var xHack string
+	_ = highTag.Extensions.GetOrZero("x-hack").Decode(&xHack)
+
 	assert.Equal(t, "chicken", highTag.Name)
 	assert.Equal(t, "nuggets", highTag.Description)
 	assert.Equal(t, "https://pb33f.io", highTag.ExternalDocs.URL)
-	assert.Equal(t, "code", highTag.Extensions["x-hack"])
+	assert.Equal(t, "code", xHack)
 
 	wentLow := highTag.GoLow()
 	assert.Equal(t, 5, wentLow.FindExtension("x-hack").ValueNode.Line)
@@ -45,11 +47,9 @@ x-hack: code`
 	// render the tag as YAML
 	highTagBytes, _ := highTag.Render()
 	assert.Equal(t, strings.TrimSpace(string(highTagBytes)), yml)
-
 }
 
 func TestTag_RenderInline(t *testing.T) {
-
 	tag := &Tag{
 		Name: "cake",
 	}

datamodel/high/base/xml.go

@@ -6,6 +6,7 @@ package base
 import (
 	"github.com/pb33f/libopenapi/datamodel/high"
 	low "github.com/pb33f/libopenapi/datamodel/low/base"
+	"github.com/pb33f/libopenapi/orderedmap"
 	"gopkg.in/yaml.v3"
 )
 
@@ -25,7 +26,7 @@ type XML struct {
 	Prefix     string `json:"prefix,omitempty" yaml:"prefix,omitempty"`
 	Attribute  bool   `json:"attribute,omitempty" yaml:"attribute,omitempty"`
 	Wrapped    bool   `json:"wrapped,omitempty" yaml:"wrapped,omitempty"`
-	Extensions map[string]any
+	Extensions *orderedmap.Map[string, *yaml.Node]
 	low        *low.XML
 }
 

datamodel/high/node_builder.go

@@ -11,27 +11,18 @@ import (
 	"strings"
 	"unicode"
 
+	"github.com/pb33f/libopenapi/datamodel/high/nodes"
 	"github.com/pb33f/libopenapi/datamodel/low"
+	"github.com/pb33f/libopenapi/orderedmap"
 	"github.com/pb33f/libopenapi/utils"
 	"gopkg.in/yaml.v3"
 )
 
-// NodeEntry represents a single node used by NodeBuilder.
-type NodeEntry struct {
-	Tag         string
-	Key         string
-	Value       any
-	StringValue string
-	Line        int
-	Style       yaml.Style
-	RenderZero  bool
-}
-
 // NodeBuilder is a structure used by libopenapi high-level objects, to render themselves back to YAML.
 // this allows high-level objects to be 'mutable' because all changes will be rendered out.
 type NodeBuilder struct {
 	Version float32
-	Nodes   []*NodeEntry
+	Nodes   []*nodes.NodeEntry
 	High    any
 	Low     any
 	Resolve bool // If set to true, all references will be rendered inline
@@ -62,7 +53,6 @@ func NewNodeBuilder(high any, low any) *NodeBuilder {
 }
 
 func (n *NodeBuilder) add(key string, i int) {
-
 	// only operate on exported fields.
 	if unicode.IsLower(rune(key[0])) {
 		return
@@ -71,38 +61,38 @@ func (n *NodeBuilder) add(key string, i int) {
 	// if the key is 'Extensions' then we need to extract the keys from the map
 	// and add them to the node builder.
 	if key == "Extensions" {
-		extensions := reflect.ValueOf(n.High).Elem().FieldByName(key)
+		ev := reflect.ValueOf(n.High).Elem().FieldByName(key).Interface()
-		for b, e := range extensions.MapKeys() {
+		var extensions *orderedmap.Map[string, *yaml.Node]
-			v := extensions.MapIndex(e)
+		if ev != nil {
-
+			extensions = ev.(*orderedmap.Map[string, *yaml.Node])
-			extKey := e.String()
+		}
-			extValue := v.Interface()
-			nodeEntry := &NodeEntry{Tag: extKey, Key: extKey, Value: extValue, Line: 9999 + b}
 
+		var lowExtensions *orderedmap.Map[low.KeyReference[string], low.ValueReference[*yaml.Node]]
 		if n.Low != nil && !reflect.ValueOf(n.Low).IsZero() {
-				fieldValue := reflect.ValueOf(n.Low).Elem().FieldByName("Extensions")
-				f := fieldValue.Interface()
-				value := reflect.ValueOf(f)
-				switch value.Kind() {
-				case reflect.Map:
 			if j, ok := n.Low.(low.HasExtensionsUntyped); ok {
-						originalExtensions := j.GetExtensions()
+				lowExtensions = j.GetExtensions()
-						u := 0
-						for k := range originalExtensions {
-							if k.Value == extKey {
-								if originalExtensions[k].ValueNode.Line != 0 {
-									nodeEntry.Style = originalExtensions[k].ValueNode.Style
-									nodeEntry.Line = originalExtensions[k].ValueNode.Line + u
-								} else {
-									nodeEntry.Line = 999999 + b + u
 			}
 		}
-							u++
+
+		j := 0
+		if lowExtensions != nil {
+			// If we have low extensions get the original lowest line number so we end up in the same place
+			for pair := orderedmap.First(lowExtensions); pair != nil; pair = pair.Next() {
+				if j == 0 || pair.Key().KeyNode.Line < j {
+					j = pair.Key().KeyNode.Line
 				}
 			}
 		}
+
+		for pair := orderedmap.First(extensions); pair != nil; pair = pair.Next() {
+			nodeEntry := &nodes.NodeEntry{Tag: pair.Key(), Key: pair.Key(), Value: pair.Value(), Line: j}
+
+			if lowExtensions != nil {
+				lowItem := low.FindItemInOrderedMap(pair.Key(), lowExtensions)
+				nodeEntry.LowValue = lowItem
 			}
 			n.Nodes = append(n.Nodes, nodeEntry)
+			j++
 		}
 		// done, extensions are handled separately.
 		return
@@ -119,11 +109,11 @@ func (n *NodeBuilder) add(key string, i int) {
 
 	var renderZeroFlag, omitemptyFlag bool
 	tagParts := strings.Split(tag, ",")
-	for i = 1; i < len(tagParts); i++ {
+	for _, part := range tagParts {
-		if tagParts[i] == renderZero {
+		if part == renderZero {
 			renderZeroFlag = true
 		}
-		if tagParts[i] == "omitempty" {
+		if part == "omitempty" {
 			omitemptyFlag = true
 		}
 	}
@@ -133,7 +123,9 @@ func (n *NodeBuilder) add(key string, i int) {
 	f := fieldValue.Interface()
 	value := reflect.ValueOf(f)
 	var isZero bool
-	if zeroer, ok := f.(yaml.IsZeroer); ok && zeroer.IsZero() {
+	if (value.Kind() == reflect.Interface || value.Kind() == reflect.Ptr) && value.IsNil() {
+		isZero = true
+	} else if zeroer, ok := f.(yaml.IsZeroer); ok && zeroer.IsZero() {
 		isZero = true
 	} else if f == nil || value.IsZero() {
 		isZero = true
@@ -146,7 +138,7 @@ func (n *NodeBuilder) add(key string, i int) {
 	}
 
 	// create a new node entry
-	nodeEntry := &NodeEntry{Tag: tagName, Key: key}
+	nodeEntry := &nodes.NodeEntry{Tag: tagName, Key: key}
 	nodeEntry.RenderZero = renderZeroFlag
 	switch value.Kind() {
 	case reflect.Float64, reflect.Float32:
@@ -192,39 +184,24 @@ func (n *NodeBuilder) add(key string, i int) {
 		fLow := lowFieldValue.Interface()
 		value = reflect.ValueOf(fLow)
 
-		type lineStyle struct {
+		nodeEntry.LowValue = fLow
-			line  int
-			style yaml.Style
-		}
-
 		switch value.Kind() {
 
 		case reflect.Slice:
 			l := value.Len()
-			lines := make([]lineStyle, l)
+			lines := make([]int, l)
 			for g := 0; g < l; g++ {
 				qw := value.Index(g).Interface()
 				if we, wok := qw.(low.HasKeyNode); wok {
-					lines[g] = lineStyle{we.GetKeyNode().Line, we.GetKeyNode().Style}
+					lines[g] = we.GetKeyNode().Line
 				}
 			}
 			sort.Slice(lines, func(i, j int) bool {
-				return lines[i].line < lines[j].line
+				return lines[i] < lines[j]
 			})
-			nodeEntry.Line = lines[0].line // pick the lowest line number so this key is sorted in order.
+			nodeEntry.Line = lines[0]
-			nodeEntry.Style = lines[0].style
-			break
 		case reflect.Map:
-			l := value.Len()
+			panic("only ordered maps are supported")
-			line := make([]int, l)
-			for q, ky := range value.MapKeys() {
-				if we, wok := ky.Interface().(low.HasKeyNode); wok {
-					line[q] = we.GetKeyNode().Line
-				}
-			}
-			sort.Ints(line)
-			nodeEntry.Line = line[0]
-
 		case reflect.Struct:
 			y := value.Interface()
 			nodeEntry.Line = 9999 + i
@@ -232,13 +209,11 @@ func (n *NodeBuilder) add(key string, i int) {
 				if nb.IsReference() {
 					if jk, kj := y.(low.HasKeyNode); kj {
 						nodeEntry.Line = jk.GetKeyNode().Line
-						nodeEntry.Style = jk.GetKeyNode().Style
 						break
 					}
 				}
 				if nb.GetValueNode() != nil {
 					nodeEntry.Line = nb.GetValueNode().Line
-					nodeEntry.Style = nb.GetValueNode().Style
 				}
 			}
 		default:
@@ -252,12 +227,13 @@ func (n *NodeBuilder) add(key string, i int) {
 	}
 }
 
-func (n *NodeBuilder) renderReference() []*yaml.Node {
+func (n *NodeBuilder) renderReference(fg low.IsReferenced) *yaml.Node {
-	fg := n.Low.(low.IsReferenced)
+	origNode := fg.GetReferenceNode()
-	nodes := make([]*yaml.Node, 2)
+	if origNode == nil {
-	nodes[0] = utils.CreateStringNode("$ref")
+		return utils.CreateRefNode(fg.GetReference())
-	nodes[1] = utils.CreateStringNode(fg.GetReference())
+	}
-	return nodes
+
+	return origNode
 }
 
 // Render will render the NodeBuilder back to a YAML node, iterating over every NodeEntry defined
@@ -272,8 +248,7 @@ func (n *NodeBuilder) Render() *yaml.Node {
 		g := reflect.ValueOf(fg)
 		if !g.IsNil() {
 			if fg.IsReference() && !n.Resolve {
-				m.Content = append(m.Content, n.renderReference()...)
+				return n.renderReference(n.Low.(low.IsReferenced))
-				return m
 			}
 		}
 	}
@@ -295,7 +270,7 @@ func (n *NodeBuilder) Render() *yaml.Node {
 // AddYAMLNode will add a new *yaml.Node to the parent node, using the tag, key and value provided.
 // If the value is nil, then the node will not be added. This method is recursive, so it will dig down
 // into any non-scalar types.
-func (n *NodeBuilder) AddYAMLNode(parent *yaml.Node, entry *NodeEntry) *yaml.Node {
+func (n *NodeBuilder) AddYAMLNode(parent *yaml.Node, entry *nodes.NodeEntry) *yaml.Node {
 	if entry.Value == nil {
 		return parent
 	}
@@ -305,11 +280,11 @@ func (n *NodeBuilder) AddYAMLNode(parent *yaml.Node, entry *NodeEntry) *yaml.Nod
 	var l *yaml.Node
 	if entry.Tag != "" {
 		l = utils.CreateStringNode(entry.Tag)
+		l.Style = entry.KeyStyle
 	}
 
 	value := entry.Value
 	line := entry.Line
-	key := entry.Key
 
 	var valueNode *yaml.Node
 	switch t.Kind() {
@@ -318,9 +293,15 @@ func (n *NodeBuilder) AddYAMLNode(parent *yaml.Node, entry *NodeEntry) *yaml.Nod
 		val := value.(string)
 		valueNode = utils.CreateStringNode(val)
 		valueNode.Line = line
-		valueNode.Style = entry.Style
-		break
 
+		if entry.LowValue != nil {
+			if vnut, ok := entry.LowValue.(low.HasValueNodeUntyped); ok {
+				vn := vnut.GetValueNode()
+				if vn != nil {
+					valueNode.Style = vn.Style
+				}
+			}
+		}
 	case reflect.Bool:
 		val := value.(bool)
 		if !val {
@@ -329,26 +310,18 @@ func (n *NodeBuilder) AddYAMLNode(parent *yaml.Node, entry *NodeEntry) *yaml.Nod
 			valueNode = utils.CreateBoolNode("true")
 		}
 		valueNode.Line = line
-		break
-
 	case reflect.Int:
 		val := strconv.Itoa(value.(int))
 		valueNode = utils.CreateIntNode(val)
 		valueNode.Line = line
-		break
-
 	case reflect.Int64:
 		val := strconv.FormatInt(value.(int64), 10)
 		valueNode = utils.CreateIntNode(val)
 		valueNode.Line = line
-		break
-
 	case reflect.Float32:
 		val := strconv.FormatFloat(float64(value.(float32)), 'f', 2, 64)
 		valueNode = utils.CreateFloatNode(val)
 		valueNode.Line = line
-		break
-
 	case reflect.Float64:
 		precision := -1
 		if entry.StringValue != "" && strings.Contains(entry.StringValue, ".") {
@@ -357,87 +330,8 @@ func (n *NodeBuilder) AddYAMLNode(parent *yaml.Node, entry *NodeEntry) *yaml.Nod
 		val := strconv.FormatFloat(value.(float64), 'f', precision, 64)
 		valueNode = utils.CreateFloatNode(val)
 		valueNode.Line = line
-		break
-
 	case reflect.Map:
-
+		panic("only ordered maps are supported")
-		// the keys will be rendered randomly, if we don't find out the original line
-		// number of the tag.
-
-		var orderedCollection []*NodeEntry
-		m := reflect.ValueOf(value)
-		for g, k := range m.MapKeys() {
-			var x string
-			// extract key
-			yu := k.Interface()
-			if o, ok := yu.(low.HasKeyNode); ok {
-				x = o.GetKeyNode().Value
-			} else {
-				x = k.String()
-			}
-
-			// go low and pull out the line number.
-			lowProps := reflect.ValueOf(n.Low)
-			if n.Low != nil && !lowProps.IsZero() && !lowProps.IsNil() {
-				gu := lowProps.Elem()
-				gi := gu.FieldByName(key)
-				jl := reflect.ValueOf(gi)
-				if !jl.IsZero() && gi.Interface() != nil {
-					gh := gi.Interface()
-					// extract low level key line number
-					if pr, ok := gh.(low.HasValueUnTyped); ok {
-						fg := reflect.ValueOf(pr.GetValueUntyped())
-						found := false
-						found, orderedCollection = n.extractLowMapKeys(fg, x, found, orderedCollection, m, k)
-						if found != true {
-							// this is something new, add it.
-							orderedCollection = append(orderedCollection, &NodeEntry{
-								Tag:   x,
-								Key:   x,
-								Line:  9999 + g,
-								Value: m.MapIndex(k).Interface(),
-							})
-						}
-					} else {
-						// this is a map, but it may be wrapped still.
-						bj := reflect.ValueOf(gh)
-						orderedCollection = n.extractLowMapKeysWrapped(bj, x, orderedCollection, g)
-					}
-				} else {
-					// this is a map, without any low level details available (probably an extension map).
-					orderedCollection = append(orderedCollection, &NodeEntry{
-						Tag:   x,
-						Key:   x,
-						Line:  9999 + g,
-						Value: m.MapIndex(k).Interface(),
-					})
-				}
-			} else {
-				// this is a map, without any low level details available (probably an extension map).
-				orderedCollection = append(orderedCollection, &NodeEntry{
-					Tag:   x,
-					Key:   x,
-					Line:  9999 + g,
-					Value: m.MapIndex(k).Interface(),
-				})
-			}
-		}
-
-		// sort the slice by line number to ensure everything is rendered in order.
-		sort.Slice(orderedCollection, func(i, j int) bool {
-			return orderedCollection[i].Line < orderedCollection[j].Line
-		})
-
-		// create an empty map.
-		p := utils.CreateEmptyMapNode()
-
-		// build out each map node in original order.
-		for _, cv := range orderedCollection {
-			n.AddYAMLNode(p, cv)
-		}
-		if len(p.Content) > 0 {
-			valueNode = p
-		}
 
 	case reflect.Slice:
 
@@ -456,8 +350,7 @@ func (n *NodeBuilder) AddYAMLNode(parent *yaml.Node, entry *NodeEntry) *yaml.Nod
 						if ut != nil && r.GetReference() != "" &&
 							ut.(low.IsReferenced).IsReference() {
 							if !n.Resolve {
-								refNode := utils.CreateRefNode(glu.GoLowUntyped().(low.IsReferenced).GetReference())
+								sl.Content = append(sl.Content, n.renderReference(glu.GoLowUntyped().(low.IsReferenced)))
-								sl.Content = append(sl.Content, refNode)
 								skip = true
 							} else {
 								skip = false
@@ -472,13 +365,13 @@ func (n *NodeBuilder) AddYAMLNode(parent *yaml.Node, entry *NodeEntry) *yaml.Nod
 				if er, ko := sqi.(Renderable); ko {
 					var rend interface{}
 					if !n.Resolve {
-						rend, _ = er.(Renderable).MarshalYAML()
+						rend, _ = er.MarshalYAML()
 					} else {
 						// try and render inline, if we can, otherwise treat as normal.
 						if _, ko := er.(RenderableInline); ko {
 							rend, _ = er.(RenderableInline).MarshalYAMLInline()
 						} else {
-							rend, _ = er.(Renderable).MarshalYAML()
+							rend, _ = er.MarshalYAML()
 						}
 					}
 					// check if this is a pointer or not.
@@ -505,6 +398,17 @@ func (n *NodeBuilder) AddYAMLNode(parent *yaml.Node, entry *NodeEntry) *yaml.Nod
 		if err != nil {
 			return parent
 		} else {
+			if entry.LowValue != nil {
+				if vnut, ok := entry.LowValue.(low.HasValueNodeUntyped); ok {
+					vn := vnut.GetValueNode()
+					if vn.Kind == yaml.SequenceNode {
+						for i := range vn.Content {
+							rawNode.Content[i].Style = vn.Content[i].Style
+						}
+					}
+				}
+			}
+
 			valueNode = &rawNode
 		}
 
@@ -524,18 +428,29 @@ func (n *NodeBuilder) AddYAMLNode(parent *yaml.Node, entry *NodeEntry) *yaml.Nod
 		return parent
 
 	case reflect.Ptr:
-		if r, ok := value.(Renderable); ok {
+		if m, ok := value.(orderedmap.MapToYamlNoder); ok {
+			l := entry.LowValue
+
+			if l == nil {
+				if gl, ok := value.(GoesLowUntyped); ok && gl.GoLowUntyped() != nil {
+					l = gl.GoLowUntyped()
+				}
+			}
+
+			p := m.ToYamlNode(n, l)
+			if len(p.Content) > 0 {
+				valueNode = p
+			}
+		} else if r, ok := value.(Renderable); ok {
 			if gl, lg := value.(GoesLowUntyped); lg {
-				if gl.GoLowUntyped() != nil {
+				lut := gl.GoLowUntyped()
-					ut := reflect.ValueOf(gl.GoLowUntyped())
+				if lut != nil {
+					lr := lut.(low.IsReferenced)
+					ut := reflect.ValueOf(lr)
 					if !ut.IsNil() {
-						if gl.GoLowUntyped().(low.IsReferenced).IsReference() {
+						if lut.(low.IsReferenced).IsReference() {
 							if !n.Resolve {
-								// TODO: use renderReference here.
+								valueNode = n.renderReference(lut.(low.IsReferenced))
-								rvn := utils.CreateEmptyMapNode()
-								rvn.Content = append(rvn.Content, utils.CreateStringNode("$ref"))
-								rvn.Content = append(rvn.Content, utils.CreateStringNode(gl.GoLowUntyped().(low.IsReferenced).GetReference()))
-								valueNode = rvn
 								break
 							}
 						}
@@ -621,64 +536,6 @@ func (n *NodeBuilder) AddYAMLNode(parent *yaml.Node, entry *NodeEntry) *yaml.Nod
 	return parent
 }
 
-func (n *NodeBuilder) extractLowMapKeysWrapped(iu reflect.Value, x string, orderedCollection []*NodeEntry, g int) []*NodeEntry {
-	for _, ky := range iu.MapKeys() {
-		ty := ky.Interface()
-		if ere, eok := ty.(low.HasKeyNode); eok {
-			er := ere.GetKeyNode().Value
-			if er == x {
-				orderedCollection = append(orderedCollection, &NodeEntry{
-					Tag:   x,
-					Key:   x,
-					Line:  ky.Interface().(low.HasKeyNode).GetKeyNode().Line,
-					Value: iu.MapIndex(ky).Interface(),
-				})
-			}
-		} else {
-			orderedCollection = append(orderedCollection, &NodeEntry{
-				Tag:   x,
-				Key:   x,
-				Line:  9999 + g,
-				Value: iu.MapIndex(ky).Interface(),
-			})
-		}
-	}
-	return orderedCollection
-}
-
-func (n *NodeBuilder) extractLowMapKeys(fg reflect.Value, x string, found bool, orderedCollection []*NodeEntry, m reflect.Value, k reflect.Value) (bool, []*NodeEntry) {
-	if fg.IsValid() && !fg.IsZero() {
-		for j, ky := range fg.MapKeys() {
-			hu := ky.Interface()
-			if we, wok := hu.(low.HasKeyNode); wok {
-				er := we.GetKeyNode().Value
-				if er == x {
-					found = true
-					orderedCollection = append(orderedCollection, &NodeEntry{
-						Tag:   x,
-						Key:   x,
-						Line:  we.GetKeyNode().Line,
-						Value: m.MapIndex(k).Interface(),
-					})
-				}
-			} else {
-				uu := ky.Interface()
-				if uu == x {
-					// this is a map, without any low level details available
-					found = true
-					orderedCollection = append(orderedCollection, &NodeEntry{
-						Tag:   uu.(string),
-						Key:   uu.(string),
-						Line:  9999 + j,
-						Value: m.MapIndex(k).Interface(),
-					})
-				}
-			}
-		}
-	}
-	return found, orderedCollection
-}
-
 // Renderable is an interface that can be implemented by types that provide a custom MarshalYAML method.
 type Renderable interface {
 	MarshalYAML() (interface{}, error)

datamodel/high/node_builder_test.go

@@ -4,82 +4,57 @@
 package high
 
 import (
+	"strings"
+	"testing"
+
+	"github.com/pb33f/libopenapi/datamodel/high/nodes"
 	"github.com/pb33f/libopenapi/datamodel/low"
+	"github.com/pb33f/libopenapi/orderedmap"
 	"github.com/pb33f/libopenapi/utils"
 	"github.com/stretchr/testify/assert"
 	"gopkg.in/yaml.v3"
-	"reflect"
-	"strings"
-	"testing"
 )
 
-type key struct {
+type valueReferenceStruct struct {
-	Name             string `yaml:"name,omitempty"`
 	ref    bool
 	refStr string
-	ln               int
+	Value  string `yaml:"value,omitempty"`
-	nilval           bool
-	v                any
-	kn               *yaml.Node
-	low.IsReferenced `yaml:"-"`
 }
 
-func (k key) GetKeyNode() *yaml.Node {
+func (r valueReferenceStruct) IsReference() bool {
-	if k.kn != nil {
+	return r.ref
-		return k.kn
-	}
-	kn := utils.CreateStringNode("meddy")
-	kn.Line = k.ln
-	return kn
 }
 
-func (k key) GetValueUntyped() any {
+func (r valueReferenceStruct) GetReference() string {
-	return k.v
+	return r.refStr
 }
 
-func (k key) GetValueNode() *yaml.Node {
+func (r *valueReferenceStruct) SetReference(ref string, _ *yaml.Node) {
-	return k.GetValueNodeUntyped()
+	r.refStr = ref
 }
 
-func (k key) GetValueNodeUntyped() *yaml.Node {
+func (r *valueReferenceStruct) GetReferenceNode() *yaml.Node {
-	if k.nilval {
 	return nil
-	}
-	kn := utils.CreateStringNode("maddy")
-	kn.Line = k.ln
-	return kn
 }
 
-func (k key) IsReference() bool {
+func (r valueReferenceStruct) MarshalYAML() (interface{}, error) {
-	return k.ref
-}
-
-func (k key) GetReference() string {
-	return k.refStr
-}
-
-func (k key) SetReference(ref string) {
-	k.refStr = ref
-}
-
-func (k key) GoLowUntyped() any {
-	return &k
-}
-
-func (k key) MarshalYAML() (interface{}, error) {
 	return utils.CreateStringNode("pizza"), nil
 }
 
-func (k key) MarshalYAMLInline() (interface{}, error) {
+func (r valueReferenceStruct) MarshalYAMLInline() (interface{}, error) {
 	return utils.CreateStringNode("pizza-inline!"), nil
 }
 
+func (r valueReferenceStruct) GoLowUntyped() any {
+	return &r
+}
+
 type plug struct {
 	Name []string `yaml:"name,omitempty"`
 }
 
 type test1 struct {
-	Thrig      map[string]*plug      `yaml:"thrig,omitempty"`
+	Thrig      *orderedmap.Map[string, *plug]                    `yaml:"thrig,omitempty"`
 	Thing      string                                            `yaml:"thing,omitempty"`
 	Thong      int                                               `yaml:"thong,omitempty"`
 	Thrum      int64                                             `yaml:"thrum,omitempty"`
@@ -93,80 +68,83 @@ type test1 struct {
 	Throo      *float64                                          `yaml:"throo,renderZero,omitempty"`
 	Tharg      []string                                          `yaml:"tharg,omitempty"`
 	Type       []string                                          `yaml:"type,omitempty"`
-	Throg      []*key                `yaml:"throg,omitempty"`
+	Throg      []*valueReferenceStruct                           `yaml:"throg,omitempty"`
 	Thrat      []interface{}                                     `yaml:"thrat,omitempty"`
-	Thrag      []map[string][]string `yaml:"thrag,omitempty"`
+	Thrag      []*orderedmap.Map[string, []string]               `yaml:"thrag,omitempty"`
-	Thrug      map[string]string     `yaml:"thrug,omitempty"`
+	Thrug      *orderedmap.Map[string, string]                   `yaml:"thrug,omitempty"`
-	Thoom      []map[string]string   `yaml:"thoom,omitempty"`
+	Thoom      []*orderedmap.Map[string, string]                 `yaml:"thoom,omitempty"`
-	Thomp      map[key]string        `yaml:"thomp,omitempty"`
+	Thomp      *orderedmap.Map[low.KeyReference[string], string] `yaml:"thomp,omitempty"`
-	Thump      key                   `yaml:"thump,omitempty"`
+	Thump      valueReferenceStruct                              `yaml:"thump,omitempty"`
-	Thane      key                   `yaml:"thane,omitempty"`
+	Thane      valueReferenceStruct                              `yaml:"thane,omitempty"`
-	Thunk      key                   `yaml:"thunk,omitempty"`
+	Thunk      valueReferenceStruct                              `yaml:"thunk,omitempty"`
-	Thrim      *key                  `yaml:"thrim,omitempty"`
+	Thrim      *valueReferenceStruct                             `yaml:"thrim,omitempty"`
-	Thril      map[string]*key       `yaml:"thril,omitempty"`
+	Thril      *orderedmap.Map[string, *valueReferenceStruct]    `yaml:"thril,omitempty"`
-	Extensions map[string]any        `yaml:"-"`
+	Extensions *orderedmap.Map[string, *yaml.Node]               `yaml:"-"`
 	ignoreMe   string                                            `yaml:"-"`
 	IgnoreMe   string                                            `yaml:"-"`
 }
 
-func (te *test1) GetExtensions() map[low.KeyReference[string]]low.ValueReference[any] {
+func (te *test1) GetExtensions() *orderedmap.Map[low.KeyReference[string], low.ValueReference[*yaml.Node]] {
+	g := orderedmap.New[low.KeyReference[string], low.ValueReference[*yaml.Node]]()
 
-	g := make(map[low.KeyReference[string]]low.ValueReference[any])
+	i := 0
+	for pair := orderedmap.First(te.Extensions); pair != nil; pair = pair.Next() {
+		kn := utils.CreateStringNode(pair.Key())
+		kn.Line = 999999 + i // weighted to the bottom.
 
-	for i := range te.Extensions {
+		g.Set(low.KeyReference[string]{
-
+			Value:   pair.Key(),
-		f := reflect.TypeOf(te.Extensions[i])
-		switch f.Kind() {
-		case reflect.String:
-			vn := utils.CreateStringNode(te.Extensions[i].(string))
-			vn.Line = 999999 // weighted to the bottom.
-			g[low.KeyReference[string]{
-				Value:   i,
-				KeyNode: vn,
-			}] = low.ValueReference[any]{
-				ValueNode: vn,
-				Value:     te.Extensions[i].(string),
-			}
-		case reflect.Map:
-			kn := utils.CreateStringNode(i)
-			var vn yaml.Node
-			_ = vn.Decode(te.Extensions[i])
-
-			kn.Line = 999999 // weighted to the bottom.
-			g[low.KeyReference[string]{
-				Value:   i,
 			KeyNode: kn,
-			}] = low.ValueReference[any]{
+		}, low.ValueReference[*yaml.Node]{
-				ValueNode: &vn,
+			ValueNode: pair.Value(),
-				Value:     te.Extensions[i],
+			Value:     pair.Value(),
-			}
+		})
-		}
+		i++
-
 	}
 	return g
 }
 
 func (te *test1) MarshalYAML() (interface{}, error) {
+	panic("MarshalYAML")
 	nb := NewNodeBuilder(te, te)
 	return nb.Render(), nil
 }
 
 func (te *test1) GetKeyNode() *yaml.Node {
+	panic("GetKeyNode")
 	kn := utils.CreateStringNode("meddy")
 	kn.Line = 20
 	return kn
 }
 
 func (te *test1) GoesLowUntyped() any {
+	panic("GoesLowUntyped")
 	return te
 }
 
 func TestNewNodeBuilder(t *testing.T) {
-
 	b := true
 	c := int64(12345)
 	d := 1234.1234
 
+	thoom1 := orderedmap.New[string, string]()
+	thoom1.Set("maddy", "champion")
+
+	thoom2 := orderedmap.New[string, string]()
+	thoom2.Set("ember", "naughty")
+
+	thomp := orderedmap.New[low.KeyReference[string], string]()
+	thomp.Set(low.KeyReference[string]{
+		Value:   "meddy",
+		KeyNode: utils.CreateStringNode("meddy"),
+	}, "princess")
+
+	thrug := orderedmap.New[string, string]()
+	thrug.Set("chicken", "nuggets")
+
+	ext := orderedmap.New[string, *yaml.Node]()
+	ext.Set("x-pizza", utils.CreateStringNode("time"))
+
 	t1 := test1{
 		ignoreMe: "I should never be seen!",
 		Thing:    "ding",
@@ -181,30 +159,18 @@ func TestNewNodeBuilder(t *testing.T) {
 		Thral:    &d,
 		Tharg:    []string{"chicken", "nuggets"},
 		Type:     []string{"chicken"},
-		Thoom: []map[string]string{
+		Thoom: []*orderedmap.Map[string, string]{
-			{
+			thoom1,
-				"maddy": "champion",
+			thoom2,
 		},
-			{
+		Thomp: thomp,
-				"ember": "naughty",
+		Thane: valueReferenceStruct{ // this is going to be ignored, needs to be a ValueReference
-			},
+			Value: "ripples",
-		},
-		Thomp: map[key]string{
-			{ln: 1}: "princess",
-		},
-		Thane: key{ // this is going to be ignored, needs to be a ValueReference
-			ln:     2,
-			ref:    true,
-			refStr: "ripples",
-		},
-		Thrug: map[string]string{
-			"chicken": "nuggets",
-		},
-		Thump: key{Name: "I will be ignored", ln: 3},
-		Thunk: key{ln: 4, nilval: true},
-		Extensions: map[string]any{
-			"x-pizza": "time",
 		},
+		Thrug:      thrug,
+		Thump:      valueReferenceStruct{Value: "I will be ignored"},
+		Thunk:      valueReferenceStruct{},
+		Extensions: ext,
 	}
 
 	nb := NewNodeBuilder(&t1, nil)
@@ -235,11 +201,9 @@ thomp:
 x-pizza: time`
 
 	assert.Equal(t, desired, strings.TrimSpace(string(data)))
-
 }
 
 func TestNewNodeBuilder_Type(t *testing.T) {
-
 	t1 := test1{
 		Type: []string{"chicken", "soup"},
 	}
@@ -257,15 +221,12 @@ func TestNewNodeBuilder_Type(t *testing.T) {
 }
 
 func TestNewNodeBuilder_IsReferenced(t *testing.T) {
-
+	t1 := &low.ValueReference[string]{
-	t1 := key{
+		Value: "cotton",
-		Name:   "cotton",
-		ref:    true,
-		refStr: "#/my/heart",
-		ln:     2,
 	}
+	t1.SetReference("#/my/heart", nil)
 
-	nb := NewNodeBuilder(&t1, &t1)
+	nb := NewNodeBuilder(t1, t1)
 	node := nb.Render()
 
 	data, _ := yaml.Marshal(node)
@@ -276,13 +237,13 @@ func TestNewNodeBuilder_IsReferenced(t *testing.T) {
 }
 
 func TestNewNodeBuilder_Extensions(t *testing.T) {
+	ext := orderedmap.New[string, *yaml.Node]()
+	ext.Set("x-pizza", utils.CreateStringNode("time"))
+	ext.Set("x-money", utils.CreateStringNode("time"))
 
 	t1 := test1{
 		Thing:      "ding",
-		Extensions: map[string]any{
+		Extensions: ext,
-			"x-pizza": "time",
-			"x-money": "time",
-		},
 		Thong:      1,
 	}
 
@@ -294,13 +255,13 @@ func TestNewNodeBuilder_Extensions(t *testing.T) {
 }
 
 func TestNewNodeBuilder_LowValueNode(t *testing.T) {
+	ext := orderedmap.New[string, *yaml.Node]()
+	ext.Set("x-pizza", utils.CreateStringNode("time"))
+	ext.Set("x-money", utils.CreateStringNode("time"))
 
 	t1 := test1{
 		Thing:      "ding",
-		Extensions: map[string]any{
+		Extensions: ext,
-			"x-pizza": "time",
-			"x-money": "time",
-		},
 		Thong:      1,
 	}
 
@@ -313,12 +274,11 @@ func TestNewNodeBuilder_LowValueNode(t *testing.T) {
 }
 
 func TestNewNodeBuilder_NoValue(t *testing.T) {
-
 	t1 := test1{
 		Thing: "",
 	}
 
-	nodeEnty := NodeEntry{}
+	nodeEnty := nodes.NodeEntry{}
 	nb := NewNodeBuilder(&t1, &t1)
 	node := nb.AddYAMLNode(nil, &nodeEnty)
 	assert.Nil(t, node)
@@ -326,7 +286,7 @@ func TestNewNodeBuilder_NoValue(t *testing.T) {
 
 func TestNewNodeBuilder_EmptyString(t *testing.T) {
 	t1 := new(test1)
-	nodeEnty := NodeEntry{}
+	nodeEnty := nodes.NodeEntry{}
 	nb := NewNodeBuilder(t1, t1)
 	node := nb.AddYAMLNode(nil, &nodeEnty)
 	assert.Nil(t, node)
@@ -334,7 +294,7 @@ func TestNewNodeBuilder_EmptyString(t *testing.T) {
 
 func TestNewNodeBuilder_EmptyStringRenderZero(t *testing.T) {
 	t1 := new(test1)
-	nodeEnty := NodeEntry{RenderZero: true, Value: ""}
+	nodeEnty := nodes.NodeEntry{RenderZero: true, Value: ""}
 	nb := NewNodeBuilder(t1, t1)
 	m := utils.CreateEmptyMapNode()
 	node := nb.AddYAMLNode(m, &nodeEnty)
@@ -344,7 +304,7 @@ func TestNewNodeBuilder_EmptyStringRenderZero(t *testing.T) {
 func TestNewNodeBuilder_Bool(t *testing.T) {
 	t1 := new(test1)
 	nb := NewNodeBuilder(t1, t1)
-	nodeEnty := NodeEntry{}
+	nodeEnty := nodes.NodeEntry{}
 	node := nb.AddYAMLNode(nil, &nodeEnty)
 	assert.Nil(t, node)
 }
@@ -364,7 +324,7 @@ func TestNewNodeBuilder_Int(t *testing.T) {
 	t1 := new(test1)
 	nb := NewNodeBuilder(t1, t1)
 	p := utils.CreateEmptyMapNode()
-	nodeEnty := NodeEntry{Tag: "p", Value: 12, Key: "p"}
+	nodeEnty := nodes.NodeEntry{Tag: "p", Value: 12, Key: "p"}
 	node := nb.AddYAMLNode(p, &nodeEnty)
 	assert.NotNil(t, node)
 	assert.Len(t, node.Content, 2)
@@ -375,7 +335,7 @@ func TestNewNodeBuilder_Int64(t *testing.T) {
 	t1 := new(test1)
 	nb := NewNodeBuilder(t1, t1)
 	p := utils.CreateEmptyMapNode()
-	nodeEnty := NodeEntry{Tag: "p", Value: int64(234556), Key: "p"}
+	nodeEnty := nodes.NodeEntry{Tag: "p", Value: int64(234556), Key: "p"}
 	node := nb.AddYAMLNode(p, &nodeEnty)
 	assert.NotNil(t, node)
 	assert.Len(t, node.Content, 2)
@@ -386,7 +346,7 @@ func TestNewNodeBuilder_Float32(t *testing.T) {
 	t1 := new(test1)
 	nb := NewNodeBuilder(t1, t1)
 	p := utils.CreateEmptyMapNode()
-	nodeEnty := NodeEntry{Tag: "p", Value: float32(1234.23), Key: "p"}
+	nodeEnty := nodes.NodeEntry{Tag: "p", Value: float32(1234.23), Key: "p"}
 	node := nb.AddYAMLNode(p, &nodeEnty)
 	assert.NotNil(t, node)
 	assert.Len(t, node.Content, 2)
@@ -397,7 +357,7 @@ func TestNewNodeBuilder_Float64(t *testing.T) {
 	t1 := new(test1)
 	nb := NewNodeBuilder(t1, t1)
 	p := utils.CreateEmptyMapNode()
-	nodeEnty := NodeEntry{Tag: "p", Value: 1234.232323, Key: "p", StringValue: "1234.232323"}
+	nodeEnty := nodes.NodeEntry{Tag: "p", Value: 1234.232323, Key: "p", StringValue: "1234.232323"}
 	node := nb.AddYAMLNode(p, &nodeEnty)
 	assert.NotNil(t, node)
 	assert.Len(t, node.Content, 2)
@@ -410,30 +370,33 @@ func TestNewNodeBuilder_EmptyNode(t *testing.T) {
 	nb.Nodes = nil
 	m := nb.Render()
 	assert.Len(t, m.Content, 0)
-
 }
 
 func TestNewNodeBuilder_MapKeyHasValue(t *testing.T) {
+	thrug := orderedmap.New[string, string]()
+	thrug.Set("dump", "trump")
 
 	t1 := test1{
-		Thrug: map[string]string{
+		Thrug: thrug,
-			"dump": "trump",
-		},
 	}
 
 	type test1low struct {
-		Thrug key      `yaml:"thrug"`
+		Thrug *orderedmap.Map[*low.KeyReference[string], *low.ValueReference[string]] `yaml:"thrug"`
 		Thugg *bool                                                                   `yaml:"thugg"`
 		Throo *float32                                                                `yaml:"throo"`
 	}
 
+	thrugLow := orderedmap.New[*low.KeyReference[string], *low.ValueReference[string]]()
+	thrugLow.Set(&low.KeyReference[string]{
+		Value:   "dump",
+		KeyNode: utils.CreateStringNode("dump"),
+	}, &low.ValueReference[string]{
+		Value:     "trump",
+		ValueNode: utils.CreateStringNode("trump"),
+	})
+
 	t2 := test1low{
-		Thrug: key{
+		Thrug: thrugLow,
-			v: map[string]string{
-				"dump": "trump",
-			},
-			ln: 2,
-		},
 	}
 
 	nb := NewNodeBuilder(&t1, &t2)
@@ -448,31 +411,30 @@ func TestNewNodeBuilder_MapKeyHasValue(t *testing.T) {
 }
 
 func TestNewNodeBuilder_MapKeyHasValueThatHasValue(t *testing.T) {
+	thomp := orderedmap.New[low.KeyReference[string], string]()
+	thomp.Set(low.KeyReference[string]{Value: "meddy", KeyNode: utils.CreateStringNode("meddy")}, "princess")
 
 	t1 := test1{
-		Thomp: map[key]string{
+		Thomp: thomp,
-			{v: "who"}: "princess",
-		},
 	}
 
 	type test1low struct {
-		Thomp key      `yaml:"thomp"`
+		Thomp low.ValueReference[*orderedmap.Map[low.KeyReference[string], low.ValueReference[string]]] `yaml:"thomp"`
 		Thugg *bool                                                                                     `yaml:"thugg"`
 		Throo *float32                                                                                  `yaml:"throo"`
 	}
 
+	valueMap := orderedmap.New[low.KeyReference[string], low.ValueReference[string]]()
+	valueMap.Set(low.KeyReference[string]{
+		Value:   "ice",
+		KeyNode: utils.CreateStringNode("ice"),
+	}, low.ValueReference[string]{
+		Value: "princess",
+	})
+
 	t2 := test1low{
-		Thomp: key{
+		Thomp: low.ValueReference[*orderedmap.Map[low.KeyReference[string], low.ValueReference[string]]]{
-			v: map[key]string{
+			Value: valueMap,
-				{
-					v: key{
-						v:  "ice",
-						kn: utils.CreateStringNode("limes"),
-					},
-					kn: utils.CreateStringNode("chimes"),
-					ln: 6}: "princess",
-			},
-			ln: 2,
 		},
 	}
 
@@ -488,23 +450,27 @@ func TestNewNodeBuilder_MapKeyHasValueThatHasValue(t *testing.T) {
 }
 
 func TestNewNodeBuilder_MapKeyHasValueThatHasValueMatch(t *testing.T) {
+	thomp := orderedmap.New[low.KeyReference[string], string]()
+	thomp.Set(low.KeyReference[string]{Value: "meddy", KeyNode: utils.CreateStringNode("meddy")}, "princess")
 
 	t1 := test1{
-		Thomp: map[key]string{
+		Thomp: thomp,
-			{v: "who"}: "princess",
-		},
 	}
 
 	type test1low struct {
-		Thomp low.NodeReference[map[key]string] `yaml:"thomp"`
+		Thomp low.NodeReference[*orderedmap.Map[low.KeyReference[string], string]] `yaml:"thomp"`
 		Thugg *bool                                                                `yaml:"thugg"`
 		Throo *float32                                                             `yaml:"throo"`
 	}
 
-	g := low.NodeReference[map[key]string]{
+	valMap := orderedmap.New[low.KeyReference[string], string]()
-		Value: map[key]string{
+	valMap.Set(low.KeyReference[string]{
-			{v: "my", kn: utils.CreateStringNode("limes")}: "princess",
+		Value:   "meddy",
-		},
+		KeyNode: utils.CreateStringNode("meddy"),
+	}, "princess")
+
+	g := low.NodeReference[*orderedmap.Map[low.KeyReference[string], string]]{
+		Value: valMap,
 	}
 
 	t2 := test1low{
@@ -522,93 +488,26 @@ func TestNewNodeBuilder_MapKeyHasValueThatHasValueMatch(t *testing.T) {
 	assert.Equal(t, desired, strings.TrimSpace(string(data)))
 }
 
-func TestNewNodeBuilder_MapKeyHasValueThatHasValueMatchKeyNode(t *testing.T) {
-
-	t1 := test1{
-		Thomp: map[key]string{
-			{v: "who"}: "princess",
-		},
-	}
-
-	type test1low struct {
-		Thomp low.NodeReference[map[key]string] `yaml:"thomp"`
-		Thugg *bool                             `yaml:"thugg"`
-		Throo *float32                          `yaml:"throo"`
-	}
-
-	g := low.NodeReference[map[key]string]{
-		Value: map[key]string{
-			{v: "my", kn: utils.CreateStringNode("limes")}: "princess",
-		},
-	}
-
-	t2 := test1low{
-		Thomp: g,
-	}
-
-	nb := NewNodeBuilder(&t1, &t2)
-	node := nb.Render()
-
-	data, _ := yaml.Marshal(node)
-
-	desired := `thomp:
-    meddy: princess`
-
-	assert.Equal(t, desired, strings.TrimSpace(string(data)))
-}
-
-func TestNewNodeBuilder_MapKeyHasValueThatHasValueMatch_NoWrap(t *testing.T) {
-
-	t1 := test1{
-		Thomp: map[key]string{
-			{v: "who"}: "princess",
-		},
-	}
-
-	type test1low struct {
-		Thomp map[key]string `yaml:"thomp"`
-		Thugg *bool          `yaml:"thugg"`
-		Throo *float32       `yaml:"throo"`
-	}
-
-	t2 := test1low{
-		Thomp: map[key]string{
-			{v: "my", kn: utils.CreateStringNode("meddy")}: "princess",
-		},
-	}
-
-	nb := NewNodeBuilder(&t1, &t2)
-	node := nb.Render()
-
-	data, _ := yaml.Marshal(node)
-
-	desired := `thomp:
-    meddy: princess`
-
-	assert.Equal(t, desired, strings.TrimSpace(string(data)))
-}
-
 func TestNewNodeBuilder_MissingLabel(t *testing.T) {
-
 	t1 := new(test1)
 	nb := NewNodeBuilder(t1, t1)
 	p := utils.CreateEmptyMapNode()
-	nodeEnty := NodeEntry{Value: 1234.232323, Key: "p"}
+	nodeEnty := nodes.NodeEntry{Value: 1234.232323, Key: "p"}
 	node := nb.AddYAMLNode(p, &nodeEnty)
 	assert.NotNil(t, node)
 	assert.Len(t, node.Content, 0)
 }
 
 func TestNewNodeBuilder_ExtensionMap(t *testing.T) {
+	ext := orderedmap.New[string, *yaml.Node]()
+	pizza := orderedmap.New[string, string]()
+	pizza.Set("dump", "trump")
+	ext.Set("x-pizza", utils.CreateYamlNode(pizza))
+	ext.Set("x-money", utils.CreateStringNode("time"))
 
 	t1 := test1{
 		Thing:      "ding",
-		Extensions: map[string]any{
+		Extensions: ext,
-			"x-pizza": map[string]string{
-				"dump": "trump",
-			},
-			"x-money": "time",
-		},
 		Thong:      1,
 	}
 
@@ -621,20 +520,21 @@ func TestNewNodeBuilder_ExtensionMap(t *testing.T) {
 }
 
 func TestNewNodeBuilder_MapKeyHasValueThatHasValueMismatch(t *testing.T) {
+	ext := orderedmap.New[string, *yaml.Node]()
+	pizza := orderedmap.New[string, string]()
+	pizza.Set("dump", "trump")
+	ext.Set("x-pizza", utils.CreateYamlNode(pizza))
+	cake := orderedmap.New[string, string]()
+	cake.Set("maga", "nomore")
+	ext.Set("x-cake", utils.CreateYamlNode(cake))
+
+	thril := orderedmap.New[string, *valueReferenceStruct]()
+	thril.Set("princess", &valueReferenceStruct{Value: "who"})
+	thril.Set("heavy", &valueReferenceStruct{Value: "who"})
 
 	t1 := test1{
-		Extensions: map[string]any{
+		Extensions: ext,
-			"x-pizza": map[string]string{
+		Thril:      thril,
-				"dump": "trump",
-			},
-			"x-cake": map[string]string{
-				"maga": "nomore",
-			},
-		},
-		Thril: map[string]*key{
-			"princess": {v: "who", Name: "beef", ln: 2},
-			"heavy":    {v: "who", Name: "industries", ln: 3},
-		},
 	}
 
 	nb := NewNodeBuilder(&t1, nil)
@@ -642,13 +542,18 @@ func TestNewNodeBuilder_MapKeyHasValueThatHasValueMismatch(t *testing.T) {
 
 	data, _ := yaml.Marshal(node)
 
-	assert.Len(t, data, 94)
+	assert.Equal(t, `thril:
+    princess: pizza
+    heavy: pizza
+x-pizza:
+    dump: trump
+x-cake:
+    maga: nomore`, strings.TrimSpace(string(data)))
 }
 
 func TestNewNodeBuilder_SliceRef(t *testing.T) {
-
+	c := valueReferenceStruct{ref: true, refStr: "#/red/robin/yummmmm", Value: "milky"}
-	c := key{ref: true, refStr: "#/red/robin/yummmmm", Name: "milky"}
+	ty := []*valueReferenceStruct{&c}
-	ty := []*key{&c}
 	t1 := test1{
 		Throg: ty,
 	}
@@ -665,9 +570,8 @@ func TestNewNodeBuilder_SliceRef(t *testing.T) {
 }
 
 func TestNewNodeBuilder_SliceRef_Inline(t *testing.T) {
-
+	c := valueReferenceStruct{Value: "milky"}
-	c := key{ref: true, refStr: "#/red/robin/yummmmm", Name: "milky"}
+	ty := []*valueReferenceStruct{&c}
-	ty := []*key{&c}
 	t1 := test1{
 		Throg: ty,
 	}
@@ -684,22 +588,19 @@ func TestNewNodeBuilder_SliceRef_Inline(t *testing.T) {
 	assert.Equal(t, desired, strings.TrimSpace(string(data)))
 }
 
-type testRender struct {
+type testRender struct{}
-}
 
 func (t testRender) MarshalYAML() (interface{}, error) {
 	return utils.CreateStringNode("testy!"), nil
 }
 
-type testRenderRawNode struct {
+type testRenderRawNode struct{}
-}
 
 func (t testRenderRawNode) MarshalYAML() (interface{}, error) {
 	return yaml.Node{Kind: yaml.ScalarNode, Value: "zesty!"}, nil
 }
 
 func TestNewNodeBuilder_SliceRef_Inline_NotCompatible(t *testing.T) {
-
 	ty := []interface{}{testRender{}}
 	t1 := test1{
 		Thrat: ty,
@@ -718,7 +619,6 @@ func TestNewNodeBuilder_SliceRef_Inline_NotCompatible(t *testing.T) {
 }
 
 func TestNewNodeBuilder_SliceRef_Inline_NotCompatible_NotPointer(t *testing.T) {
-
 	ty := []interface{}{testRenderRawNode{}}
 	t1 := test1{
 		Thrat: ty,
@@ -737,7 +637,6 @@ func TestNewNodeBuilder_SliceRef_Inline_NotCompatible_NotPointer(t *testing.T) {
 }
 
 func TestNewNodeBuilder_PointerRef_Inline_NotCompatible_RawNode(t *testing.T) {
-
 	ty := testRenderRawNode{}
 	t1 := test1{
 		Thurm: &ty,
@@ -755,8 +654,7 @@ func TestNewNodeBuilder_PointerRef_Inline_NotCompatible_RawNode(t *testing.T) {
 }
 
 func TestNewNodeBuilder_PointerRef_Inline_NotCompatible(t *testing.T) {
-
+	ty := valueReferenceStruct{}
-	ty := key{}
 	t1 := test1{
 		Thurm: &ty,
 	}
@@ -773,9 +671,8 @@ func TestNewNodeBuilder_PointerRef_Inline_NotCompatible(t *testing.T) {
 }
 
 func TestNewNodeBuilder_SliceNoRef(t *testing.T) {
-
+	c := valueReferenceStruct{Value: "milky"}
-	c := key{ref: false, Name: "milky"}
+	ty := []*valueReferenceStruct{&c}
-	ty := []*key{&c}
 	t1 := test1{
 		Throg: ty,
 	}
@@ -792,7 +689,6 @@ func TestNewNodeBuilder_SliceNoRef(t *testing.T) {
 }
 
 func TestNewNodeBuilder_TestStructAny(t *testing.T) {
-
 	t1 := test1{
 		Thurm: low.ValueReference[any]{
 			ValueNode: utils.CreateStringNode("beer"),
@@ -808,8 +704,8 @@ func TestNewNodeBuilder_TestStructAny(t *testing.T) {
 
 	assert.Equal(t, desired, strings.TrimSpace(string(data)))
 }
-func TestNewNodeBuilder_TestStructString(t *testing.T) {
 
+func TestNewNodeBuilder_TestStructString(t *testing.T) {
 	t1 := test1{
 		Thurm: low.ValueReference[string]{
 			ValueNode: utils.CreateStringNode("beer"),
@@ -827,12 +723,11 @@ func TestNewNodeBuilder_TestStructString(t *testing.T) {
 }
 
 func TestNewNodeBuilder_TestStructPointer(t *testing.T) {
-
 	t1 := test1{
-		Thrim: &key{
+		Thrim: &valueReferenceStruct{
 			ref:    true,
 			refStr: "#/cash/money",
-			Name:   "pizza",
+			Value:  "pizza",
 		},
 	}
 
@@ -848,17 +743,17 @@ func TestNewNodeBuilder_TestStructPointer(t *testing.T) {
 }
 
 func TestNewNodeBuilder_TestStructRef(t *testing.T) {
-
 	fkn := utils.CreateStringNode("pizzaBurgers")
 	fkn.Line = 22
 
-	t1 := test1{
+	thurm := low.NodeReference[string]{
-		Thurm: low.NodeReference[string]{
-			Reference:     "#/cash/money",
-			ReferenceNode: true,
 		KeyNode:   fkn,
 		ValueNode: fkn,
-		},
+	}
+	thurm.SetReference("#/cash/money", nil)
+
+	t1 := test1{
+		Thurm: thurm,
 	}
 
 	nb := NewNodeBuilder(&t1, &t1)
@@ -872,7 +767,6 @@ func TestNewNodeBuilder_TestStructRef(t *testing.T) {
 }
 
 func TestNewNodeBuilder_TestStructDefaultEncode(t *testing.T) {
-
 	f := 1
 	t1 := test1{
 		Thurm: &f,
@@ -889,9 +783,10 @@ func TestNewNodeBuilder_TestStructDefaultEncode(t *testing.T) {
 }
 
 func TestNewNodeBuilder_TestSliceMapSliceStruct(t *testing.T) {
-
+	pizza := orderedmap.New[string, []string]()
-	a := []map[string][]string{
+	pizza.Set("pizza", []string{"beer", "wine"})
-		{"pizza": {"beer", "wine"}},
+	a := []*orderedmap.Map[string, []string]{
+		pizza,
 	}
 
 	t1 := test1{
@@ -912,7 +807,6 @@ func TestNewNodeBuilder_TestSliceMapSliceStruct(t *testing.T) {
 }
 
 func TestNewNodeBuilder_TestRenderZero(t *testing.T) {
-
 	f := false
 	t1 := test1{
 		Thugg: &f,
@@ -929,7 +823,6 @@ func TestNewNodeBuilder_TestRenderZero(t *testing.T) {
 }
 
 func TestNewNodeBuilder_TestRenderZero_Float(t *testing.T) {
-
 	f := 0.0
 	t1 := test1{
 		Throo: &f,
@@ -946,7 +839,6 @@ func TestNewNodeBuilder_TestRenderZero_Float(t *testing.T) {
 }
 
 func TestNewNodeBuilder_TestRenderZero_Float_NotZero(t *testing.T) {
-
 	f := 0.12
 	t1 := test1{
 		Throo: &f,
@@ -963,11 +855,11 @@ func TestNewNodeBuilder_TestRenderZero_Float_NotZero(t *testing.T) {
 }
 
 func TestNewNodeBuilder_TestRenderServerVariableSimulation(t *testing.T) {
+	thrig := orderedmap.New[string, *plug]()
+	thrig.Set("pork", &plug{Name: []string{"gammon", "bacon"}})
 
 	t1 := test1{
-		Thrig: map[string]*plug{
+		Thrig: thrig,
-			"pork": {Name: []string{"gammon", "bacon"}},
-		},
 	}
 
 	nb := NewNodeBuilder(&t1, &t1)
@@ -985,22 +877,21 @@ func TestNewNodeBuilder_TestRenderServerVariableSimulation(t *testing.T) {
 }
 
 func TestNewNodeBuilder_ShouldHaveNotDoneTestsLikeThisOhWell(t *testing.T) {
+	m := orderedmap.New[low.KeyReference[string], low.ValueReference[*valueReferenceStruct]]()
 
-	m := make(map[low.KeyReference[string]]low.ValueReference[*key])
+	m.Set(low.KeyReference[string]{
-
-	m[low.KeyReference[string]{
 		KeyNode: utils.CreateStringNode("pizza"),
 		Value:   "pizza",
-	}] = low.ValueReference[*key]{
+	}, low.ValueReference[*valueReferenceStruct]{
 		ValueNode: utils.CreateStringNode("beer"),
-		Value:     &key{},
+		Value:     &valueReferenceStruct{},
-	}
+	})
 
-	d := make(map[string]*key)
+	d := orderedmap.New[string, *valueReferenceStruct]()
-	d["pizza"] = &key{}
+	d.Set("pizza", &valueReferenceStruct{})
 
 	type t1low struct {
-		Thril low.NodeReference[map[low.KeyReference[string]]low.ValueReference[*key]]
+		Thril low.NodeReference[*orderedmap.Map[low.KeyReference[string], low.ValueReference[*valueReferenceStruct]]]
 		Thugg *bool    `yaml:"thugg"`
 		Throo *float32 `yaml:"throo"`
 	}
@@ -1010,7 +901,7 @@ func TestNewNodeBuilder_ShouldHaveNotDoneTestsLikeThisOhWell(t *testing.T) {
 	}
 
 	t2 := t1low{
-		Thril: low.NodeReference[map[low.KeyReference[string]]low.ValueReference[*key]]{
+		Thril: low.NodeReference[*orderedmap.Map[low.KeyReference[string], low.ValueReference[*valueReferenceStruct]]]{
 			Value:     m,
 			ValueNode: utils.CreateStringNode("beer"),
 		},

datamodel/high/nodes/nodeentry.go

@@ -0,0 +1,16 @@
+package nodes
+
+import "gopkg.in/yaml.v3"
+
+// NodeEntry represents a single node used by NodeBuilder.
+type NodeEntry struct {
+	Tag         string
+	Key         string
+	Value       any
+	StringValue string
+	Line        int
+	KeyStyle    yaml.Style
+	// ValueStyle  yaml.Style
+	RenderZero bool
+	LowValue   any
+}

datamodel/high/shared.go

@@ -15,12 +15,13 @@ package high
 
 import (
 	"github.com/pb33f/libopenapi/datamodel/low"
+	"github.com/pb33f/libopenapi/orderedmap"
+	"gopkg.in/yaml.v3"
 )
 
 // GoesLow is used to represent any high-level model. All high level models meet this interface and can be used to
 // extract low-level models from any high-level model.
 type GoesLow[T any] interface {
-
 	// GoLow returns the low-level object that was used to create the high-level object. This allows consumers
 	// to dive-down into the plumbing API at any point in the model.
 	GoLow() T
@@ -29,18 +30,17 @@ type GoesLow[T any] interface {
 // GoesLowUntyped is used to represent any high-level model. All high level models meet this interface and can be used to
 // extract low-level models from any high-level model.
 type GoesLowUntyped interface {
-
 	// GoLowUntyped returns the low-level object that was used to create the high-level object. This allows consumers
 	// to dive-down into the plumbing API at any point in the model.
 	GoLowUntyped() any
 }
 
-// ExtractExtensions is a convenience method for converting low-level extension definitions, to a high level map[string]any
+// ExtractExtensions is a convenience method for converting low-level extension definitions, to a high level *orderedmap.Map[string, *yaml.Node]
 // definition that is easier to consume in applications.
-func ExtractExtensions(extensions map[low.KeyReference[string]]low.ValueReference[any]) map[string]any {
+func ExtractExtensions(extensions *orderedmap.Map[low.KeyReference[string], low.ValueReference[*yaml.Node]]) *orderedmap.Map[string, *yaml.Node] {
-	extracted := make(map[string]any)
+	extracted := orderedmap.New[string, *yaml.Node]()
-	for k, v := range extensions {
+	for pair := orderedmap.First(extensions); pair != nil; pair = pair.Next() {
-		extracted[k.Value] = v.Value
+		extracted.Set(pair.Key().Value, pair.Value().Value)
 	}
 	return extracted
 }
@@ -61,18 +61,18 @@ func ExtractExtensions(extensions map[low.KeyReference[string]]low.ValueReferenc
 //
 //	schema := schemaProxy.Schema() // any high-level object that has
 //	extensions, err := UnpackExtensions[MyComplexType, low.Schema](schema)
-func UnpackExtensions[T any, R low.HasExtensions[T]](low GoesLow[R]) (map[string]*T, error) {
+func UnpackExtensions[T any, R low.HasExtensions[T]](low GoesLow[R]) (*orderedmap.Map[string, *T], error) {
-	m := make(map[string]*T)
+	m := orderedmap.New[string, *T]()
 	ext := low.GoLow().GetExtensions()
-	for i := range ext {
+	for pair := orderedmap.First(ext); pair != nil; pair = pair.Next() {
-		key := i.Value
+		key := pair.Key().Value
 		g := new(T)
-		valueNode := ext[i].ValueNode
+		valueNode := pair.Value().ValueNode
 		err := valueNode.Decode(g)
 		if err != nil {
 			return nil, err
 		}
-		m[key] = g
+		m.Set(key, g)
 	}
 	return m, nil
 }

datamodel/high/shared_test.go

@@ -4,21 +4,30 @@
 package high
 
 import (
-	"github.com/pb33f/libopenapi/datamodel/low"
-	"github.com/stretchr/testify/assert"
-	"gopkg.in/yaml.v3"
 	"testing"
+
+	"github.com/pb33f/libopenapi/datamodel/low"
+	"github.com/pb33f/libopenapi/orderedmap"
+	"github.com/pb33f/libopenapi/utils"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+	"gopkg.in/yaml.v3"
 )
 
 func TestExtractExtensions(t *testing.T) {
-	n := make(map[low.KeyReference[string]]low.ValueReference[any])
+	n := orderedmap.New[low.KeyReference[string], low.ValueReference[*yaml.Node]]()
-	n[low.KeyReference[string]{
+	n.Set(low.KeyReference[string]{
 		Value: "pb33f",
-	}] = low.ValueReference[any]{
+	}, low.ValueReference[*yaml.Node]{
-		Value: "new cowboy in town",
+		Value: utils.CreateStringNode("new cowboy in town"),
-	}
+	})
 	ext := ExtractExtensions(n)
-	assert.Equal(t, "new cowboy in town", ext["pb33f"])
+
+	var pb33f string
+	err := ext.GetOrZero("pb33f").Decode(&pb33f)
+	require.NoError(t, err)
+
+	assert.Equal(t, "new cowboy in town", pb33f)
 }
 
 type textExtension struct {
@@ -35,15 +44,14 @@ func (p *parent) GoLow() *child {
 }
 
 type child struct {
-	Extensions map[low.KeyReference[string]]low.ValueReference[any]
+	Extensions *orderedmap.Map[low.KeyReference[string], low.ValueReference[*yaml.Node]]
 }
 
-func (c *child) GetExtensions() map[low.KeyReference[string]]low.ValueReference[any] {
+func (c *child) GetExtensions() *orderedmap.Map[low.KeyReference[string], low.ValueReference[*yaml.Node]] {
 	return c.Extensions
 }
 
 func TestUnpackExtensions(t *testing.T) {
-
 	var resultA, resultB yaml.Node
 
 	ymlA := `
@@ -59,18 +67,18 @@ power: 2`
 	err = yaml.Unmarshal([]byte(ymlB), &resultB)
 	assert.NoError(t, err)
 
-	n := make(map[low.KeyReference[string]]low.ValueReference[any])
+	n := orderedmap.New[low.KeyReference[string], low.ValueReference[*yaml.Node]]()
-	n[low.KeyReference[string]{
+	n.Set(low.KeyReference[string]{
 		Value: "x-rancher-a",
-	}] = low.ValueReference[any]{
+	}, low.ValueReference[*yaml.Node]{
 		ValueNode: resultA.Content[0],
-	}
+	})
 
-	n[low.KeyReference[string]{
+	n.Set(low.KeyReference[string]{
 		Value: "x-rancher-b",
-	}] = low.ValueReference[any]{
+	}, low.ValueReference[*yaml.Node]{
 		ValueNode: resultB.Content[0],
-	}
+	})
 
 	c := new(child)
 	c.Extensions = n
@@ -81,14 +89,13 @@ power: 2`
 	res, err := UnpackExtensions[textExtension, *child](p)
 	assert.NoError(t, err)
 	assert.NotEmpty(t, res)
-	assert.Equal(t, "buckaroo", res["x-rancher-a"].Cowboy)
+	assert.Equal(t, "buckaroo", res.GetOrZero("x-rancher-a").Cowboy)
-	assert.Equal(t, 100, res["x-rancher-a"].Power)
+	assert.Equal(t, 100, res.GetOrZero("x-rancher-a").Power)
-	assert.Equal(t, "frogman", res["x-rancher-b"].Cowboy)
+	assert.Equal(t, "frogman", res.GetOrZero("x-rancher-b").Cowboy)
-	assert.Equal(t, 2, res["x-rancher-b"].Power)
+	assert.Equal(t, 2, res.GetOrZero("x-rancher-b").Power)
 }
 
 func TestUnpackExtensions_Fail(t *testing.T) {
-
 	var resultA, resultB yaml.Node
 
 	ymlA := `
@@ -105,18 +112,18 @@ power: hello`
 	err = yaml.Unmarshal([]byte(ymlB), &resultB)
 	assert.NoError(t, err)
 
-	n := make(map[low.KeyReference[string]]low.ValueReference[any])
+	n := orderedmap.New[low.KeyReference[string], low.ValueReference[*yaml.Node]]()
-	n[low.KeyReference[string]{
+	n.Set(low.KeyReference[string]{
 		Value: "x-rancher-a",
-	}] = low.ValueReference[any]{
+	}, low.ValueReference[*yaml.Node]{
 		ValueNode: resultA.Content[0],
-	}
+	})
 
-	n[low.KeyReference[string]{
+	n.Set(low.KeyReference[string]{
 		Value: "x-rancher-b",
-	}] = low.ValueReference[any]{
+	}, low.ValueReference[*yaml.Node]{
 		ValueNode: resultB.Content[0],
-	}
+	})
 
 	c := new(child)
 	c.Extensions = n

datamodel/high/v2/definitions.go

@@ -4,6 +4,7 @@
 package v2
 
 import (
+	"github.com/pb33f/libopenapi/datamodel"
 	highbase "github.com/pb33f/libopenapi/datamodel/high/base"
 	lowmodel "github.com/pb33f/libopenapi/datamodel/low"
 	lowbase "github.com/pb33f/libopenapi/datamodel/low/base"
@@ -17,7 +18,7 @@ import (
 // arrays or models.
 //   - https://swagger.io/specification/v2/#definitionsObject
 type Definitions struct {
-	Definitions orderedmap.Map[string, *highbase.SchemaProxy]
+	Definitions *orderedmap.Map[string, *highbase.SchemaProxy]
 	low         *low.Definitions
 }
 
@@ -38,7 +39,7 @@ func NewDefinitions(definitions *low.Definitions) *Definitions {
 		defs.Set(value.key, value.result)
 		return nil
 	}
-	_ = orderedmap.TranslateMapParallel(definitions.Schemas, translateFunc, resultFunc)
+	_ = datamodel.TranslateMapParallel(definitions.Schemas, translateFunc, resultFunc)
 	rd.Definitions = defs
 	return rd
 }

datamodel/high/v2/examples.go

@@ -6,13 +6,14 @@ package v2
 import (
 	low "github.com/pb33f/libopenapi/datamodel/low/v2"
 	"github.com/pb33f/libopenapi/orderedmap"
+	"gopkg.in/yaml.v3"
 )
 
 // Example represents a high-level Swagger / OpenAPI 2 Example object, backed by a low level one.
 // Allows sharing examples for operation responses
 //   - https://swagger.io/specification/v2/#exampleObject
 type Example struct {
-	Values orderedmap.Map[string, any]
+	Values *orderedmap.Map[string, *yaml.Node]
 	low    *low.Examples
 }
 
@@ -21,7 +22,7 @@ func NewExample(examples *low.Examples) *Example {
 	e := new(Example)
 	e.low = examples
 	if orderedmap.Len(examples.Values) > 0 {
-		values := orderedmap.New[string, any]()
+		values := orderedmap.New[string, *yaml.Node]()
 		for pair := orderedmap.First(examples.Values); pair != nil; pair = pair.Next() {
 			values.Set(pair.Key().Value, pair.Value().Value)
 		}

datamodel/high/v2/header.go

@@ -6,6 +6,8 @@ package v2
 import (
 	"github.com/pb33f/libopenapi/datamodel/high"
 	low "github.com/pb33f/libopenapi/datamodel/low/v2"
+	"github.com/pb33f/libopenapi/orderedmap"
+	"gopkg.in/yaml.v3"
 )
 
 // Header Represents a high-level Swagger / OpenAPI 2 Header object, backed by a low-level one.
@@ -30,7 +32,7 @@ type Header struct {
 	UniqueItems      bool
 	Enum             []any
 	MultipleOf       int
-	Extensions       map[string]any
+	Extensions       *orderedmap.Map[string, *yaml.Node]
 	low              *low.Header
 }
 

datamodel/high/v2/items.go

@@ -5,6 +5,7 @@ package v2
 
 import (
 	low "github.com/pb33f/libopenapi/datamodel/low/v2"
+	"gopkg.in/yaml.v3"
 )
 
 // Items is a high-level representation of a Swagger / OpenAPI 2 Items object, backed by a low level one.
@@ -16,7 +17,7 @@ type Items struct {
 	Format           string
 	CollectionFormat string
 	Items            *Items
-	Default          any
+	Default          *yaml.Node
 	Maximum          int
 	ExclusiveMaximum bool
 	Minimum          int
@@ -27,7 +28,7 @@ type Items struct {
 	MaxItems         int
 	MinItems         int
 	UniqueItems      bool
-	Enum             []any
+	Enum             []*yaml.Node
 	MultipleOf       int
 	low              *low.Items
 }
@@ -82,7 +83,7 @@ func NewItems(items *low.Items) *Items {
 		i.UniqueItems = items.UniqueItems.Value
 	}
 	if !items.Enum.IsEmpty() {
-		var enums []any
+		var enums []*yaml.Node
 		for e := range items.Enum.Value {
 			enums = append(enums, items.Enum.Value[e].Value)
 		}

datamodel/high/v2/operation.go

@@ -7,6 +7,8 @@ import (
 	"github.com/pb33f/libopenapi/datamodel/high"
 	"github.com/pb33f/libopenapi/datamodel/high/base"
 	low "github.com/pb33f/libopenapi/datamodel/low/v2"
+	"github.com/pb33f/libopenapi/orderedmap"
+	"gopkg.in/yaml.v3"
 )
 
 // Operation represents a high-level Swagger / OpenAPI 2 Operation object, backed by a low-level one.
@@ -25,7 +27,7 @@ type Operation struct {
 	Schemes      []string
 	Deprecated   bool
 	Security     []*base.SecurityRequirement
-	Extensions   map[string]any
+	Extensions   *orderedmap.Map[string, *yaml.Node]
 	low          *low.Operation
 }
 

datamodel/high/v2/parameter.go

@@ -7,6 +7,8 @@ import (
 	"github.com/pb33f/libopenapi/datamodel/high"
 	"github.com/pb33f/libopenapi/datamodel/high/base"
 	low "github.com/pb33f/libopenapi/datamodel/low/v2"
+	"github.com/pb33f/libopenapi/orderedmap"
+	"gopkg.in/yaml.v3"
 )
 
 // Parameter represents a high-level Swagger / OpenAPI 2 Parameter object, backed by a low-level one.
@@ -61,7 +63,7 @@ type Parameter struct {
 	Schema           *base.SchemaProxy
 	Items            *Items
 	CollectionFormat string
-	Default          any
+	Default          *yaml.Node
 	Maximum          *int
 	ExclusiveMaximum *bool
 	Minimum          *int
@@ -72,9 +74,9 @@ type Parameter struct {
 	MaxItems         *int
 	MinItems         *int
 	UniqueItems      *bool
-	Enum             []any
+	Enum             []*yaml.Node
 	MultipleOf       *int
-	Extensions       map[string]any
+	Extensions       *orderedmap.Map[string, *yaml.Node]
 	low              *low.Parameter
 }
 
@@ -147,7 +149,7 @@ func NewParameter(parameter *low.Parameter) *Parameter {
 		p.UniqueItems = &parameter.UniqueItems.Value
 	}
 	if !parameter.Enum.IsEmpty() {
-		var enums []any
+		var enums []*yaml.Node
 		for e := range parameter.Enum.Value {
 			enums = append(enums, parameter.Enum.Value[e].Value)
 		}

datamodel/high/v2/parameter_definitions.go

@@ -4,6 +4,7 @@
 package v2
 
 import (
+	"github.com/pb33f/libopenapi/datamodel"
 	lowmodel "github.com/pb33f/libopenapi/datamodel/low"
 	low "github.com/pb33f/libopenapi/datamodel/low/v2"
 	"github.com/pb33f/libopenapi/orderedmap"
@@ -16,7 +17,7 @@ import (
 // referenced to the ones defined here. It does not define global operation parameters
 //   - https://swagger.io/specification/v2/#parametersDefinitionsObject
 type ParameterDefinitions struct {
-	Definitions orderedmap.Map[string, *Parameter]
+	Definitions *orderedmap.Map[string, *Parameter]
 	low         *low.ParameterDefinitions
 }
 
@@ -36,7 +37,7 @@ func NewParametersDefinitions(parametersDefinitions *low.ParameterDefinitions) *
 		params.Set(value.key, value.result)
 		return nil
 	}
-	_ = orderedmap.TranslateMapParallel(parametersDefinitions.Definitions, translateFunc, resultFunc)
+	_ = datamodel.TranslateMapParallel(parametersDefinitions.Definitions, translateFunc, resultFunc)
 	pd.Definitions = params
 	return pd
 }

datamodel/high/v2/path_item.go

@@ -4,10 +4,15 @@
 package v2
 
 import (
+	"reflect"
+	"slices"
 	"sync"
 
 	"github.com/pb33f/libopenapi/datamodel/high"
-	low "github.com/pb33f/libopenapi/datamodel/low/v2"
+	"github.com/pb33f/libopenapi/datamodel/low"
+	lowV2 "github.com/pb33f/libopenapi/datamodel/low/v2"
+	"github.com/pb33f/libopenapi/orderedmap"
+	"gopkg.in/yaml.v3"
 )
 
 // PathItem represents a high-level Swagger / OpenAPI 2 PathItem object backed by a low-level one.
@@ -26,12 +31,12 @@ type PathItem struct {
 	Head       *Operation
 	Patch      *Operation
 	Parameters []*Parameter
-	Extensions map[string]any
+	Extensions *orderedmap.Map[string, *yaml.Node]
-	low        *low.PathItem
+	low        *lowV2.PathItem
 }
 
 // NewPathItem will create a new high-level PathItem from a low-level one. All paths are built out asynchronously.
-func NewPathItem(pathItem *low.PathItem) *PathItem {
+func NewPathItem(pathItem *lowV2.PathItem) *PathItem {
 	p := new(PathItem)
 	p.low = pathItem
 	p.Extensions = high.ExtractExtensions(pathItem.Extensions)
@@ -42,7 +47,7 @@ func NewPathItem(pathItem *low.PathItem) *PathItem {
 		}
 		p.Parameters = params
 	}
-	var buildOperation = func(method string, op *low.Operation) *Operation {
+	buildOperation := func(method string, op *lowV2.Operation) *Operation {
 		return NewOperation(op)
 	}
 
@@ -50,49 +55,49 @@ func NewPathItem(pathItem *low.PathItem) *PathItem {
 	if !pathItem.Get.IsEmpty() {
 		wg.Add(1)
 		go func() {
-			p.Get = buildOperation(low.GetLabel, pathItem.Get.Value)
+			p.Get = buildOperation(lowV2.GetLabel, pathItem.Get.Value)
 			wg.Done()
 		}()
 	}
 	if !pathItem.Put.IsEmpty() {
 		wg.Add(1)
 		go func() {
-			p.Put = buildOperation(low.PutLabel, pathItem.Put.Value)
+			p.Put = buildOperation(lowV2.PutLabel, pathItem.Put.Value)
 			wg.Done()
 		}()
 	}
 	if !pathItem.Post.IsEmpty() {
 		wg.Add(1)
 		go func() {
-			p.Post = buildOperation(low.PostLabel, pathItem.Post.Value)
+			p.Post = buildOperation(lowV2.PostLabel, pathItem.Post.Value)
 			wg.Done()
 		}()
 	}
 	if !pathItem.Patch.IsEmpty() {
 		wg.Add(1)
 		go func() {
-			p.Patch = buildOperation(low.PatchLabel, pathItem.Patch.Value)
+			p.Patch = buildOperation(lowV2.PatchLabel, pathItem.Patch.Value)
 			wg.Done()
 		}()
 	}
 	if !pathItem.Delete.IsEmpty() {
 		wg.Add(1)
 		go func() {
-			p.Delete = buildOperation(low.DeleteLabel, pathItem.Delete.Value)
+			p.Delete = buildOperation(lowV2.DeleteLabel, pathItem.Delete.Value)
 			wg.Done()
 		}()
 	}
 	if !pathItem.Head.IsEmpty() {
 		wg.Add(1)
 		go func() {
-			p.Head = buildOperation(low.HeadLabel, pathItem.Head.Value)
+			p.Head = buildOperation(lowV2.HeadLabel, pathItem.Head.Value)
 			wg.Done()
 		}()
 	}
 	if !pathItem.Options.IsEmpty() {
 		wg.Add(1)
 		go func() {
-			p.Options = buildOperation(low.OptionsLabel, pathItem.Options.Value)
+			p.Options = buildOperation(lowV2.OptionsLabel, pathItem.Options.Value)
 			wg.Done()
 		}()
 	}
@@ -101,32 +106,65 @@ func NewPathItem(pathItem *low.PathItem) *PathItem {
 }
 
 // GoLow returns the low-level PathItem used to create the high-level one.
-func (p *PathItem) GoLow() *low.PathItem {
+func (p *PathItem) GoLow() *lowV2.PathItem {
 	return p.low
 }
 
-func (p *PathItem) GetOperations() map[string]*Operation {
+func (p *PathItem) GetOperations() *orderedmap.Map[string, *Operation] {
-	o := make(map[string]*Operation)
+	o := orderedmap.New[string, *Operation]()
+
+	// TODO: this is a bit of a hack, but it works for now. We might just want to actually pull the data out of the document as a map and split it into the individual operations
+
+	type op struct {
+		name string
+		op   *Operation
+		line int
+	}
+
+	getLine := func(field string, idx int) int {
+		if p.GoLow() == nil {
+			return idx
+		}
+
+		l, ok := reflect.ValueOf(p.GoLow()).Elem().FieldByName(field).Interface().(low.NodeReference[*lowV2.Operation])
+		if !ok || l.GetKeyNode() == nil {
+			return idx
+		}
+
+		return l.GetKeyNode().Line
+	}
+
+	ops := []op{}
+
 	if p.Get != nil {
-		o[low.GetLabel] = p.Get
+		ops = append(ops, op{name: lowV2.GetLabel, op: p.Get, line: getLine("Get", -7)})
 	}
 	if p.Put != nil {
-		o[low.PutLabel] = p.Put
+		ops = append(ops, op{name: lowV2.PutLabel, op: p.Put, line: getLine("Put", -6)})
 	}
 	if p.Post != nil {
-		o[low.PostLabel] = p.Post
+		ops = append(ops, op{name: lowV2.PostLabel, op: p.Post, line: getLine("Post", -5)})
 	}
 	if p.Delete != nil {
-		o[low.DeleteLabel] = p.Delete
+		ops = append(ops, op{name: lowV2.DeleteLabel, op: p.Delete, line: getLine("Delete", -4)})
 	}
 	if p.Options != nil {
-		o[low.OptionsLabel] = p.Options
+		ops = append(ops, op{name: lowV2.OptionsLabel, op: p.Options, line: getLine("Options", -3)})
 	}
 	if p.Head != nil {
-		o[low.HeadLabel] = p.Head
+		ops = append(ops, op{name: lowV2.HeadLabel, op: p.Head, line: getLine("Head", -2)})
 	}
 	if p.Patch != nil {
-		o[low.PatchLabel] = p.Patch
+		ops = append(ops, op{name: lowV2.PatchLabel, op: p.Patch, line: getLine("Patch", -1)})
 	}
+
+	slices.SortStableFunc(ops, func(a op, b op) int {
+		return a.line - b.line
+	})
+
+	for _, op := range ops {
+		o.Set(op.name, op.op)
+	}
+
 	return o
 }

datamodel/high/v2/path_item_test.go

@@ -5,16 +5,17 @@ package v2
 
 import (
 	"context"
+	"testing"
+
 	"github.com/pb33f/libopenapi/datamodel/low"
 	v2 "github.com/pb33f/libopenapi/datamodel/low/v2"
 	"github.com/pb33f/libopenapi/index"
+	"github.com/pb33f/libopenapi/orderedmap"
 	"github.com/stretchr/testify/assert"
 	"gopkg.in/yaml.v3"
-	"testing"
 )
 
 func TestPathItem_GetOperations(t *testing.T) {
-
 	yml := `get:
   description: get
 put:
@@ -41,5 +42,5 @@ options:
 
 	r := NewPathItem(&n)
 
-	assert.Len(t, r.GetOperations(), 7)
+	assert.Equal(t, 7, orderedmap.Len(r.GetOperations()))
 }

datamodel/high/v2/paths.go

@@ -9,12 +9,13 @@ import (
 	"github.com/pb33f/libopenapi/datamodel/low"
 	v2low "github.com/pb33f/libopenapi/datamodel/low/v2"
 	"github.com/pb33f/libopenapi/orderedmap"
+	"gopkg.in/yaml.v3"
 )
 
 // Paths represents a high-level Swagger / OpenAPI Paths object, backed by a low-level one.
 type Paths struct {
-	PathItems  orderedmap.Map[string, *PathItem]
+	PathItems  *orderedmap.Map[string, *PathItem]
-	Extensions map[string]any
+	Extensions *orderedmap.Map[string, *yaml.Node]
 	low        *v2low.Paths
 }
 

datamodel/high/v2/response.go

@@ -8,6 +8,7 @@ import (
 	"github.com/pb33f/libopenapi/datamodel/high/base"
 	low "github.com/pb33f/libopenapi/datamodel/low/v2"
 	"github.com/pb33f/libopenapi/orderedmap"
+	"gopkg.in/yaml.v3"
 )
 
 // Response is a representation of a high-level Swagger / OpenAPI 2 Response object, backed by a low-level one.
@@ -16,9 +17,9 @@ import (
 type Response struct {
 	Description string
 	Schema      *base.SchemaProxy
-	Headers     orderedmap.Map[string, *Header]
+	Headers     *orderedmap.Map[string, *Header]
 	Examples    *Example
-	Extensions  map[string]any
+	Extensions  *orderedmap.Map[string, *yaml.Node]
 	low         *low.Response
 }
 

datamodel/high/v2/responses.go

@@ -4,17 +4,19 @@
 package v2
 
 import (
+	"github.com/pb33f/libopenapi/datamodel"
 	"github.com/pb33f/libopenapi/datamodel/high"
 	lowmodel "github.com/pb33f/libopenapi/datamodel/low"
 	low "github.com/pb33f/libopenapi/datamodel/low/v2"
 	"github.com/pb33f/libopenapi/orderedmap"
+	"gopkg.in/yaml.v3"
 )
 
 // Responses is a high-level representation of a Swagger / OpenAPI 2 Responses object, backed by a low level one.
 type Responses struct {
-	Codes      orderedmap.Map[string, *Response]
+	Codes      *orderedmap.Map[string, *Response]
 	Default    *Response
-	Extensions map[string]any
+	Extensions *orderedmap.Map[string, *yaml.Node]
 	low        *low.Responses
 }
 
@@ -40,7 +42,7 @@ func NewResponses(responses *low.Responses) *Responses {
 			resp.Set(value.key, value.result)
 			return nil
 		}
-		_ = orderedmap.TranslateMapParallel(responses.Codes, translateFunc, resultFunc)
+		_ = datamodel.TranslateMapParallel(responses.Codes, translateFunc, resultFunc)
 		r.Codes = resp
 	}
 

datamodel/high/v2/responses_definitions.go

@@ -4,6 +4,7 @@
 package v2
 
 import (
+	"github.com/pb33f/libopenapi/datamodel"
 	lowmodel "github.com/pb33f/libopenapi/datamodel/low"
 	low "github.com/pb33f/libopenapi/datamodel/low/v2"
 	"github.com/pb33f/libopenapi/orderedmap"
@@ -16,7 +17,7 @@ import (
 // referenced to the ones defined here. It does not define global operation responses
 //   - https://swagger.io/specification/v2/#responsesDefinitionsObject
 type ResponsesDefinitions struct {
-	Definitions orderedmap.Map[string, *Response]
+	Definitions *orderedmap.Map[string, *Response]
 	low         *low.ResponsesDefinitions
 }
 
@@ -36,7 +37,7 @@ func NewResponsesDefinitions(responsesDefinitions *low.ResponsesDefinitions) *Re
 		return nil
 	}
 
-	_ = orderedmap.TranslateMapParallel(responsesDefinitions.Definitions, translateFunc, resultFunc)
+	_ = datamodel.TranslateMapParallel(responsesDefinitions.Definitions, translateFunc, resultFunc)
 	rd.Definitions = responses
 	return rd
 }

datamodel/high/v2/scopes.go

@@ -13,7 +13,7 @@ import (
 // Scopes lists the available scopes for an OAuth2 security scheme.
 //   - https://swagger.io/specification/v2/#scopesObject
 type Scopes struct {
-	Values orderedmap.Map[string, string]
+	Values *orderedmap.Map[string, string]
 	low    *low.Scopes
 }
 

datamodel/high/v2/security_definitions.go

@@ -4,6 +4,7 @@
 package v2
 
 import (
+	"github.com/pb33f/libopenapi/datamodel"
 	lowmodel "github.com/pb33f/libopenapi/datamodel/low"
 	low "github.com/pb33f/libopenapi/datamodel/low/v2"
 	"github.com/pb33f/libopenapi/orderedmap"
@@ -16,7 +17,7 @@ import (
 // schemes on the operations and only serves to provide the relevant details for each scheme
 //   - https://swagger.io/specification/v2/#securityDefinitionsObject
 type SecurityDefinitions struct {
-	Definitions orderedmap.Map[string, *SecurityScheme]
+	Definitions *orderedmap.Map[string, *SecurityScheme]
 	low         *low.SecurityDefinitions
 }
 
@@ -35,12 +36,8 @@ func NewSecurityDefinitions(definitions *low.SecurityDefinitions) *SecurityDefin
 		schemes.Set(value.key, value.result)
 		return nil
 	}
-	_ = orderedmap.TranslateMapParallel(definitions.Definitions, translateFunc, resultFunc)
+	_ = datamodel.TranslateMapParallel(definitions.Definitions, translateFunc, resultFunc)
 
-	// schemes := make(map[string]*SecurityScheme)
-	// for k := range definitions.Definitions {
-	// 	schemes[k.Value] = NewSecurityScheme(definitions.Definitions[k].Value)
-	// }
 	sd.Definitions = schemes
 	return sd
 }

datamodel/high/v2/security_scheme.go

@@ -6,6 +6,8 @@ package v2
 import (
 	"github.com/pb33f/libopenapi/datamodel/high"
 	low "github.com/pb33f/libopenapi/datamodel/low/v2"
+	"github.com/pb33f/libopenapi/orderedmap"
+	"gopkg.in/yaml.v3"
 )
 
 // SecurityScheme is a high-level representation of a Swagger / OpenAPI 2 SecurityScheme object
@@ -24,7 +26,7 @@ type SecurityScheme struct {
 	AuthorizationUrl string
 	TokenUrl         string
 	Scopes           *Scopes
-	Extensions       map[string]any
+	Extensions       *orderedmap.Map[string, *yaml.Node]
 	low              *low.SecurityScheme
 }
 

datamodel/high/v2/swagger.go

@@ -15,11 +15,12 @@ import (
 	"github.com/pb33f/libopenapi/datamodel/high"
 	"github.com/pb33f/libopenapi/datamodel/high/base"
 	low "github.com/pb33f/libopenapi/datamodel/low/v2"
+	"github.com/pb33f/libopenapi/orderedmap"
+	"gopkg.in/yaml.v3"
 )
 
 // Swagger represents a high-level Swagger / OpenAPI 2 document. An instance of Swagger is the root of the specification.
 type Swagger struct {
-
 	// Swagger is the version of Swagger / OpenAPI being used, extracted from the 'swagger: 2.x' definition.
 	Swagger string
 
@@ -90,7 +91,7 @@ type Swagger struct {
 	ExternalDocs *base.ExternalDoc
 
 	// Extensions contains all custom extensions defined for the top-level document.
-	Extensions map[string]any
+	Extensions *orderedmap.Map[string, *yaml.Node]
 	low        *low.Swagger
 }
 

datamodel/high/v2/swagger_test.go

@@ -5,13 +5,12 @@ package v2
 
 import (
 	"os"
+	"testing"
 
 	"github.com/pb33f/libopenapi/datamodel"
 	v2 "github.com/pb33f/libopenapi/datamodel/low/v2"
 	"github.com/pb33f/libopenapi/orderedmap"
 	"github.com/stretchr/testify/assert"
-
-	"testing"
 )
 
 var doc *v2.Swagger
@@ -42,8 +41,12 @@ func BenchmarkNewDocument(b *testing.B) {
 func TestNewSwaggerDocument_Base(t *testing.T) {
 	initTest()
 	highDoc := NewSwaggerDocument(doc)
+
+	var xPet bool
+	_ = highDoc.Extensions.GetOrZero("x-pet").Decode(&xPet)
+
 	assert.Equal(t, "2.0", highDoc.Swagger)
-	assert.True(t, highDoc.Extensions["x-pet"].(bool))
+	assert.True(t, xPet)
 	assert.Equal(t, "petstore.swagger.io", highDoc.Host)
 	assert.Equal(t, "/v2", highDoc.BasePath)
 	assert.Len(t, highDoc.Schemes, 2)
@@ -56,7 +59,6 @@ func TestNewSwaggerDocument_Base(t *testing.T) {
 	wentLow := highDoc.GoLow()
 	assert.Equal(t, 16, wentLow.Host.ValueNode.Line)
 	assert.Equal(t, 7, wentLow.Host.ValueNode.Column)
-
 }
 
 func TestNewSwaggerDocument_Info(t *testing.T) {
@@ -82,11 +84,15 @@ func TestNewSwaggerDocument_Parameters(t *testing.T) {
 	initTest()
 	highDoc := NewSwaggerDocument(doc)
 	params := highDoc.Parameters
+
+	var xChicken string
+	_ = params.Definitions.GetOrZero("simpleParam").Extensions.GetOrZero("x-chicken").Decode(&xChicken)
+
 	assert.Equal(t, 1, orderedmap.Len(params.Definitions))
 	assert.Equal(t, "query", params.Definitions.GetOrZero("simpleParam").In)
 	assert.Equal(t, "simple", params.Definitions.GetOrZero("simpleParam").Name)
 	assert.Equal(t, "string", params.Definitions.GetOrZero("simpleParam").Type)
-	assert.Equal(t, "nuggets", params.Definitions.GetOrZero("simpleParam").Extensions["x-chicken"])
+	assert.Equal(t, "nuggets", xChicken)
 
 	wentLow := params.GoLow()
 	assert.Equal(t, 20, wentLow.FindParameter("simpleParam").ValueNode.Line)
@@ -95,7 +101,6 @@ func TestNewSwaggerDocument_Parameters(t *testing.T) {
 	wentLower := params.Definitions.GetOrZero("simpleParam").GoLow()
 	assert.Equal(t, 21, wentLower.Name.ValueNode.Line)
 	assert.Equal(t, 11, wentLower.Name.ValueNode.Column)
-
 }
 
 func TestNewSwaggerDocument_Security(t *testing.T) {
@@ -107,7 +112,6 @@ func TestNewSwaggerDocument_Security(t *testing.T) {
 	wentLow := highDoc.Security[0].GoLow()
 	assert.Equal(t, 25, wentLow.Requirements.ValueNode.Line)
 	assert.Equal(t, 5, wentLow.Requirements.ValueNode.Column)
-
 }
 
 func TestNewSwaggerDocument_Definitions_Security(t *testing.T) {
@@ -140,22 +144,32 @@ func TestNewSwaggerDocument_Definitions_Responses(t *testing.T) {
 	assert.Equal(t, 2, orderedmap.Len(highDoc.Responses.Definitions))
 
 	defs := highDoc.Responses.Definitions
-	assert.Equal(t, "morning", defs.GetOrZero("200").Extensions["x-coffee"])
+
+	var xCoffee string
+	_ = defs.GetOrZero("200").Extensions.GetOrZero("x-coffee").Decode(&xCoffee)
+
+	assert.Equal(t, "morning", xCoffee)
 	assert.Equal(t, "OK", defs.GetOrZero("200").Description)
 	assert.Equal(t, "a generic API response object",
 		defs.GetOrZero("200").Schema.Schema().Description)
 	assert.Equal(t, 3, orderedmap.Len(defs.GetOrZero("200").Examples.Values))
 
-	exp := defs.GetOrZero("200").Examples.Values.GetOrZero("application/json")
+	var appJson map[string]interface{}
-	assert.Len(t, exp.(map[string]interface{}), 2)
+	_ = defs.GetOrZero("200").Examples.Values.GetOrZero("application/json").Decode(&appJson)
-	assert.Equal(t, "two", exp.(map[string]interface{})["one"])
 
-	exp = defs.GetOrZero("200").Examples.Values.GetOrZero("text/xml")
+	assert.Len(t, appJson, 2)
-	assert.Len(t, exp.([]interface{}), 3)
+	assert.Equal(t, "two", appJson["one"])
-	assert.Equal(t, "two", exp.([]interface{})[1])
 
-	exp = defs.GetOrZero("200").Examples.Values.GetOrZero("text/plain")
+	var textXml []interface{}
-	assert.Equal(t, "something else.", exp)
+	_ = defs.GetOrZero("200").Examples.Values.GetOrZero("text/xml").Decode(&textXml)
+
+	assert.Len(t, textXml, 3)
+	assert.Equal(t, "two", textXml[1])
+
+	var textPlain string
+	_ = defs.GetOrZero("200").Examples.Values.GetOrZero("text/plain").Decode(&textPlain)
+
+	assert.Equal(t, "something else.", textPlain)
 
 	expWentLow := defs.GetOrZero("200").Examples.GoLow()
 	assert.Equal(t, 702, expWentLow.FindExample("application/json").ValueNode.Line)
@@ -168,10 +182,13 @@ func TestNewSwaggerDocument_Definitions_Responses(t *testing.T) {
 	assert.Len(t, y.Enum, 2)
 	x := y.Items
 
+	var def string
+	_ = x.Default.Decode(&def)
+
 	assert.Equal(t, "something", x.Format)
 	assert.Equal(t, "array", x.Type)
 	assert.Equal(t, "csv", x.CollectionFormat)
-	assert.Equal(t, "cake", x.Default)
+	assert.Equal(t, "cake", def)
 	assert.Equal(t, 10, x.Maximum)
 	assert.Equal(t, 1, x.Minimum)
 	assert.True(t, x.ExclusiveMaximum)
@@ -198,7 +215,6 @@ func TestNewSwaggerDocument_Definitions(t *testing.T) {
 
 	wentLow := highDoc.Definitions.GoLow()
 	assert.Equal(t, 848, wentLow.FindSchema("User").ValueNode.Line)
-
 }
 
 func TestNewSwaggerDocument_Paths(t *testing.T) {
@@ -207,7 +223,14 @@ func TestNewSwaggerDocument_Paths(t *testing.T) {
 	assert.Equal(t, 15, orderedmap.Len(highDoc.Paths.PathItems))
 
 	upload := highDoc.Paths.PathItems.GetOrZero("/pet/{petId}/uploadImage")
-	assert.Equal(t, "man", upload.Extensions["x-potato"])
+
+	var xPotato string
+	_ = upload.Extensions.GetOrZero("x-potato").Decode(&xPotato)
+
+	var paramEnum0 string
+	_ = upload.Post.Parameters[0].Enum[0].Decode(&paramEnum0)
+
+	assert.Equal(t, "man", xPotato)
 	assert.Nil(t, upload.Get)
 	assert.Nil(t, upload.Put)
 	assert.Nil(t, upload.Patch)
@@ -238,8 +261,11 @@ func TestNewSwaggerDocument_Paths(t *testing.T) {
 	assert.Equal(t, 20, *upload.Post.Parameters[0].MaxItems)
 	assert.True(t, *upload.Post.Parameters[0].UniqueItems)
 	assert.Len(t, upload.Post.Parameters[0].Enum, 2)
-	assert.Equal(t, "hello", upload.Post.Parameters[0].Enum[0])
+	assert.Equal(t, "hello", paramEnum0)
-	def := upload.Post.Parameters[0].Default.(map[string]interface{})
+
+	var def map[string]any
+	_ = upload.Post.Parameters[0].Default.Decode(&def)
+
 	assert.Equal(t, "here", def["something"])
 
 	assert.Equal(t, "https://pb33f.io", upload.Post.ExternalDocs.URL)
@@ -257,11 +283,9 @@ func TestNewSwaggerDocument_Paths(t *testing.T) {
 
 	wentLowest := upload.Post.GoLow()
 	assert.Equal(t, 55, wentLowest.Tags.KeyNode.Line)
-
 }
 
 func TestNewSwaggerDocument_Responses(t *testing.T) {
-
 	initTest()
 	highDoc := NewSwaggerDocument(doc)
 	upload := highDoc.Paths.PathItems.GetOrZero("/pet/{petId}/uploadImage").Post
@@ -278,5 +302,4 @@ func TestNewSwaggerDocument_Responses(t *testing.T) {
 	wentLower := OK.GoLow()
 	assert.Equal(t, 107, wentLower.Schema.KeyNode.Line)
 	assert.Equal(t, 11, wentLower.Schema.KeyNode.Column)
-
 }

datamodel/high/v3/callback.go

@@ -21,8 +21,8 @@ import (
 // that identifies a URL to use for the callback operation.
 //   - https://spec.openapis.org/oas/v3.1.0#callback-object
 type Callback struct {
-	Expression orderedmap.Map[string, *PathItem] `json:"-" yaml:"-"`
+	Expression *orderedmap.Map[string, *PathItem]  `json:"-" yaml:"-"`
-	Extensions map[string]any                    `json:"-" yaml:"-"`
+	Extensions *orderedmap.Map[string, *yaml.Node] `json:"-" yaml:"-"`
 	low        *low.Callback
 }
 
@@ -31,13 +31,11 @@ func NewCallback(lowCallback *low.Callback) *Callback {
 	n := new(Callback)
 	n.low = lowCallback
 	n.Expression = orderedmap.New[string, *PathItem]()
-	for pair := orderedmap.First(lowCallback.Expression.Value); pair != nil; pair = pair.Next() {
+	for pair := orderedmap.First(lowCallback.Expression); pair != nil; pair = pair.Next() {
 		n.Expression.Set(pair.Key().Value, NewPathItem(pair.Value().Value))
 	}
-	n.Extensions = make(map[string]any)
+
-	for k, v := range lowCallback.Extensions {
+	n.Extensions = high.ExtractExtensions(lowCallback.Extensions)
-		n.Extensions[k.Value] = v.Value
-	}
 	return n
 }
 
@@ -51,36 +49,50 @@ func (c *Callback) GoLowUntyped() any {
 	return c.low
 }
 
-// Render will return a YAML representation of the Callback object as a byte slice.
+// Render will return a YAML representation of the Paths object as a byte slice.
 func (c *Callback) Render() ([]byte, error) {
 	return yaml.Marshal(c)
 }
 
-// MarshalYAML will create a ready to render YAML representation of the Callback object.
+func (c *Callback) RenderInline() ([]byte, error) {
+	d, _ := c.MarshalYAMLInline()
+	return yaml.Marshal(d)
+}
+
+// MarshalYAML will create a ready to render YAML representation of the Paths object.
 func (c *Callback) MarshalYAML() (interface{}, error) {
 	// map keys correctly.
 	m := utils.CreateEmptyMapNode()
-	type cbItem struct {
+	type pathItem struct {
-		cb   *PathItem
+		pi       *PathItem
-		exp  string
+		path     string
 		line     int
-		ext  *yaml.Node
+		style    yaml.Style
+		rendered *yaml.Node
 	}
-	var mapped []*cbItem
+	var mapped []*pathItem
 
 	for pair := orderedmap.First(c.Expression); pair != nil; pair = pair.Next() {
-		ln := 999 // default to a high value to weight new content to the bottom.
+		k := pair.Key()
+		pi := pair.Value()
+		ln := 9999 // default to a high value to weight new content to the bottom.
+		var style yaml.Style
 		if c.low != nil {
-			for lPair := orderedmap.First(c.low.Expression.Value); lPair != nil; lPair = lPair.Next() {
+			lpi := c.low.FindExpression(k)
-				if lPair.Key().Value == pair.Key() {
+			if lpi != nil {
-					ln = lPair.Key().KeyNode.Line
+				ln = lpi.ValueNode.Line
-				}
+			}
-			}
+
-		}
+			for pair := orderedmap.First(c.low.Expression); pair != nil; pair = pair.Next() {
-		mapped = append(mapped, &cbItem{pair.Value(), pair.Key(), ln, nil})
+				if pair.Key().Value == k {
+					style = pair.Key().KeyNode.Style
+					break
+				}
+			}
+		}
+		mapped = append(mapped, &pathItem{pi, k, ln, style, nil})
 	}
 
-	// extract extensions
 	nb := high.NewNodeBuilder(c, c.low)
 	extNode := nb.Render()
 	if extNode != nil && extNode.Content != nil {
@@ -90,23 +102,101 @@ func (c *Callback) MarshalYAML() (interface{}, error) {
 				label = extNode.Content[u].Value
 				continue
 			}
-			mapped = append(mapped, &cbItem{nil, label,
+			mapped = append(mapped, &pathItem{
-				extNode.Content[u].Line, extNode.Content[u]})
+				nil, label,
+				extNode.Content[u].Line, 0, extNode.Content[u],
+			})
 		}
 	}
 
 	sort.Slice(mapped, func(i, j int) bool {
 		return mapped[i].line < mapped[j].line
 	})
-	for j := range mapped {
+	for _, mp := range mapped {
-		if mapped[j].cb != nil {
+		if mp.pi != nil {
-			rendered, _ := mapped[j].cb.MarshalYAML()
+			rendered, _ := mp.pi.MarshalYAML()
-			m.Content = append(m.Content, utils.CreateStringNode(mapped[j].exp))
+
+			kn := utils.CreateStringNode(mp.path)
+			kn.Style = mp.style
+
+			m.Content = append(m.Content, kn)
 			m.Content = append(m.Content, rendered.(*yaml.Node))
 		}
-		if mapped[j].ext != nil {
+		if mp.rendered != nil {
-			m.Content = append(m.Content, utils.CreateStringNode(mapped[j].exp))
+			m.Content = append(m.Content, utils.CreateStringNode(mp.path))
-			m.Content = append(m.Content, mapped[j].ext)
+			m.Content = append(m.Content, mp.rendered)
+		}
+	}
+
+	return m, nil
+}
+
+func (c *Callback) MarshalYAMLInline() (interface{}, error) {
+	// map keys correctly.
+	m := utils.CreateEmptyMapNode()
+	type pathItem struct {
+		pi       *PathItem
+		path     string
+		line     int
+		style    yaml.Style
+		rendered *yaml.Node
+	}
+	var mapped []*pathItem
+
+	for pair := orderedmap.First(c.Expression); pair != nil; pair = pair.Next() {
+		k := pair.Key()
+		pi := pair.Value()
+		ln := 9999 // default to a high value to weight new content to the bottom.
+		var style yaml.Style
+		if c.low != nil {
+			lpi := c.low.FindExpression(k)
+			if lpi != nil {
+				ln = lpi.ValueNode.Line
+			}
+
+			for pair := orderedmap.First(c.low.Expression); pair != nil; pair = pair.Next() {
+				if pair.Key().Value == k {
+					style = pair.Key().KeyNode.Style
+					break
+				}
+			}
+		}
+		mapped = append(mapped, &pathItem{pi, k, ln, style, nil})
+	}
+
+	nb := high.NewNodeBuilder(c, c.low)
+	nb.Resolve = true
+	extNode := nb.Render()
+	if extNode != nil && extNode.Content != nil {
+		var label string
+		for u := range extNode.Content {
+			if u%2 == 0 {
+				label = extNode.Content[u].Value
+				continue
+			}
+			mapped = append(mapped, &pathItem{
+				nil, label,
+				extNode.Content[u].Line, 0, extNode.Content[u],
+			})
+		}
+	}
+
+	sort.Slice(mapped, func(i, j int) bool {
+		return mapped[i].line < mapped[j].line
+	})
+	for _, mp := range mapped {
+		if mp.pi != nil {
+			rendered, _ := mp.pi.MarshalYAMLInline()
+
+			kn := utils.CreateStringNode(mp.path)
+			kn.Style = mp.style
+
+			m.Content = append(m.Content, kn)
+			m.Content = append(m.Content, rendered.(*yaml.Node))
+		}
+		if mp.rendered != nil {
+			m.Content = append(m.Content, utils.CreateStringNode(mp.path))
+			m.Content = append(m.Content, mp.rendered)
 		}
 	}
 

datamodel/high/v3/callback_test.go

@@ -12,11 +12,14 @@ import (
 	v3 "github.com/pb33f/libopenapi/datamodel/low/v3"
 	"github.com/pb33f/libopenapi/index"
 	"github.com/pb33f/libopenapi/orderedmap"
+	"github.com/pb33f/libopenapi/utils"
 	"github.com/stretchr/testify/assert"
 	"gopkg.in/yaml.v3"
 )
 
 func TestCallback_MarshalYAML(t *testing.T) {
+	ext := orderedmap.New[string, *yaml.Node]()
+	ext.Set("x-burgers", utils.CreateStringNode("why not?"))
 
 	cb := &Callback{
 		Expression: orderedmap.ToOrderedMap(map[string]*PathItem{
@@ -31,9 +34,7 @@ func TestCallback_MarshalYAML(t *testing.T) {
 				},
 			},
 		}),
-		Extensions: map[string]any{
+		Extensions: ext,
-			"x-burgers": "why not?",
-		},
 	}
 
 	rend, _ := cb.Render()
@@ -43,7 +44,10 @@ func TestCallback_MarshalYAML(t *testing.T) {
 
 	// mutate
 	cb.Expression.GetOrZero("https://pb33f.io").Get.OperationId = "blim-blam"
-	cb.Extensions = map[string]interface{}{"x-burgers": "yes please!"}
+
+	ext = orderedmap.New[string, *yaml.Node]()
+	ext.Set("x-burgers", utils.CreateStringNode("yes please!"))
+	cb.Extensions = ext
 
 	rend, _ = cb.Render()
 	// there is no way to determine order in brand new maps, so we have to check length.
@@ -72,7 +76,10 @@ func TestCallback_MarshalYAML(t *testing.T) {
 
 	r := NewCallback(&n)
 
-	assert.Equal(t, "please", r.Extensions["x-break-everything"])
+	var xBreakEverything string
+	_ = r.Extensions.GetOrZero("x-break-everything").Decode(&xBreakEverything)
+
+	assert.Equal(t, "please", xBreakEverything)
 
 	rend, _ = r.Render()
 	assert.Equal(t, k, strings.TrimSpace(string(rend)))

datamodel/high/v3/components.go

@@ -22,16 +22,16 @@ import (
 // will have no effect on the API unless they are explicitly referenced from properties outside the components object.
 //   - https://spec.openapis.org/oas/v3.1.0#components-object
 type Components struct {
-	Schemas         orderedmap.Map[string, *highbase.SchemaProxy] `json:"schemas,omitempty" yaml:"schemas,omitempty"`
+	Schemas         *orderedmap.Map[string, *highbase.SchemaProxy] `json:"schemas,omitempty" yaml:"schemas,omitempty"`
-	Responses       orderedmap.Map[string, *Response]             `json:"responses,omitempty" yaml:"responses,omitempty"`
+	Responses       *orderedmap.Map[string, *Response]             `json:"responses,omitempty" yaml:"responses,omitempty"`
-	Parameters      orderedmap.Map[string, *Parameter]            `json:"parameters,omitempty" yaml:"parameters,omitempty"`
+	Parameters      *orderedmap.Map[string, *Parameter]            `json:"parameters,omitempty" yaml:"parameters,omitempty"`
-	Examples        orderedmap.Map[string, *highbase.Example]     `json:"examples,omitempty" yaml:"examples,omitempty"`
+	Examples        *orderedmap.Map[string, *highbase.Example]     `json:"examples,omitempty" yaml:"examples,omitempty"`
-	RequestBodies   orderedmap.Map[string, *RequestBody]          `json:"requestBodies,omitempty" yaml:"requestBodies,omitempty"`
+	RequestBodies   *orderedmap.Map[string, *RequestBody]          `json:"requestBodies,omitempty" yaml:"requestBodies,omitempty"`
-	Headers         orderedmap.Map[string, *Header]               `json:"headers,omitempty" yaml:"headers,omitempty"`
+	Headers         *orderedmap.Map[string, *Header]               `json:"headers,omitempty" yaml:"headers,omitempty"`
-	SecuritySchemes orderedmap.Map[string, *SecurityScheme]       `json:"securitySchemes,omitempty" yaml:"securitySchemes,omitempty"`
+	SecuritySchemes *orderedmap.Map[string, *SecurityScheme]       `json:"securitySchemes,omitempty" yaml:"securitySchemes,omitempty"`
-	Links           orderedmap.Map[string, *Link]                 `json:"links,omitempty" yaml:"links,omitempty"`
+	Links           *orderedmap.Map[string, *Link]                 `json:"links,omitempty" yaml:"links,omitempty"`
-	Callbacks       orderedmap.Map[string, *Callback]             `json:"callbacks,omitempty" yaml:"callbacks,omitempty"`
+	Callbacks       *orderedmap.Map[string, *Callback]             `json:"callbacks,omitempty" yaml:"callbacks,omitempty"`
-	Extensions      map[string]any                                `json:"-" yaml:"-"`
+	Extensions      *orderedmap.Map[string, *yaml.Node]            `json:"-" yaml:"-"`
 	low             *low.Components
 }
 
@@ -41,7 +41,7 @@ type Components struct {
 func NewComponents(comp *low.Components) *Components {
 	c := new(Components)
 	c.low = comp
-	if len(comp.Extensions) > 0 {
+	if orderedmap.Len(comp.Extensions) > 0 {
 		c.Extensions = high.ExtractExtensions(comp.Extensions)
 	}
 	cbMap := orderedmap.New[string, *Callback]()
@@ -114,7 +114,7 @@ type componentResult[T any] struct {
 }
 
 // buildComponent builds component structs from low level structs.
-func buildComponent[IN any, OUT any](inMap orderedmap.Map[lowmodel.KeyReference[string], lowmodel.ValueReference[IN]], outMap orderedmap.Map[string, OUT], translateItem func(IN) OUT) {
+func buildComponent[IN any, OUT any](inMap *orderedmap.Map[lowmodel.KeyReference[string], lowmodel.ValueReference[IN]], outMap *orderedmap.Map[string, OUT], translateItem func(IN) OUT) {
 	translateFunc := func(pair orderedmap.Pair[lowmodel.KeyReference[string], lowmodel.ValueReference[IN]]) (componentResult[OUT], error) {
 		return componentResult[OUT]{key: pair.Key().Value, res: translateItem(pair.Value().Value)}, nil
 	}
@@ -126,7 +126,7 @@ func buildComponent[IN any, OUT any](inMap orderedmap.Map[lowmodel.KeyReference[
 }
 
 // buildSchema builds a schema from low level structs.
-func buildSchema(inMap orderedmap.Map[lowmodel.KeyReference[string], lowmodel.ValueReference[*base.SchemaProxy]], outMap orderedmap.Map[string, *highbase.SchemaProxy]) {
+func buildSchema(inMap *orderedmap.Map[lowmodel.KeyReference[string], lowmodel.ValueReference[*base.SchemaProxy]], outMap *orderedmap.Map[string, *highbase.SchemaProxy]) {
 	translateFunc := func(pair orderedmap.Pair[lowmodel.KeyReference[string], lowmodel.ValueReference[*base.SchemaProxy]]) (componentResult[*highbase.SchemaProxy], error) {
 		value := pair.Value()
 		var sch *highbase.SchemaProxy

datamodel/high/v3/document.go

@@ -23,7 +23,6 @@ import (
 
 // Document represents a high-level OpenAPI 3 document (both 3.0 & 3.1). A Document is the root of the specification.
 type Document struct {
-
 	// Version is the version of OpenAPI being used, extracted from the 'openapi: x.x.x' definition.
 	// This is not a standard property of the OpenAPI model, it's a convenience mechanism only.
 	Version string `json:"openapi,omitempty" yaml:"openapi,omitempty"`
@@ -54,7 +53,7 @@ type Document struct {
 	// an empty security requirement ({}) can be included in the array.
 	// - https://spec.openapis.org/oas/v3.1.0#security-requirement-object
 	Security []*base.SecurityRequirement `json:"security,omitempty" yaml:"security,omitempty"`
-	//Security []*base.SecurityRequirement `json:"-" yaml:"-"`
+	// Security []*base.SecurityRequirement `json:"-" yaml:"-"`
 
 	// Tags is a slice of base.Tag instances defined by the specification
 	// A list of tags used by the document with additional metadata. The order of the tags can be used to reflect on
@@ -69,7 +68,7 @@ type Document struct {
 	ExternalDocs *base.ExternalDoc `json:"externalDocs,omitempty" yaml:"externalDocs,omitempty"`
 
 	// Extensions contains all custom extensions defined for the top-level document.
-	Extensions map[string]any `json:"-" yaml:"-"`
+	Extensions *orderedmap.Map[string, *yaml.Node] `json:"-" yaml:"-"`
 
 	// JsonSchemaDialect is a 3.1+ property that sets the dialect to use for validating *base.Schema definitions
 	// The default value for the $schema keyword within Schema Objects contained within this OAS document.
@@ -83,7 +82,7 @@ type Document struct {
 	// for example by an out-of-band registration. The key name is a unique string to refer to each webhook,
 	// while the (optionally referenced) Path Item Object describes a request that may be initiated by the API provider
 	// and the expected responses. An example is available.
-	Webhooks orderedmap.Map[string, *PathItem] `json:"webhooks,omitempty" yaml:"webhooks,omitempty"`
+	Webhooks *orderedmap.Map[string, *PathItem] `json:"webhooks,omitempty" yaml:"webhooks,omitempty"`
 
 	// Index is a reference to the *index.SpecIndex that was created for the document and used
 	// as a guide when building out the Document. Ideal if further processing is required on the model and
@@ -122,7 +121,7 @@ func NewDocument(document *low.Document) *Document {
 	if !document.ExternalDocs.IsEmpty() {
 		d.ExternalDocs = base.NewExternalDoc(document.ExternalDocs.Value)
 	}
-	if len(document.Extensions) > 0 {
+	if orderedmap.Len(document.Extensions) > 0 {
 		d.Extensions = high.ExtractExtensions(document.Extensions)
 	}
 	if !document.Components.IsEmpty() {

datamodel/high/v3/document_test.go

@@ -51,7 +51,11 @@ func BenchmarkNewDocument(b *testing.B) {
 func TestNewDocument_Extensions(t *testing.T) {
 	initTest()
 	h := NewDocument(lowDoc)
-	assert.Equal(t, "darkside", h.Extensions["x-something-something"])
+
+	var xSomethingSomething string
+	_ = h.Extensions.GetOrZero("x-something-something").Decode(&xSomethingSomething)
+
+	assert.Equal(t, "darkside", xSomethingSomething)
 }
 
 func TestNewDocument_ExternalDocs(t *testing.T) {
@@ -133,15 +137,28 @@ func TestNewDocument_Servers(t *testing.T) {
 func TestNewDocument_Tags(t *testing.T) {
 	initTest()
 	h := NewDocument(lowDoc)
+
+	var xInternalTing string
+	_ = h.Tags[0].Extensions.GetOrZero("x-internal-ting").Decode(&xInternalTing)
+
+	var xInternalTong int64
+	_ = h.Tags[0].Extensions.GetOrZero("x-internal-tong").Decode(&xInternalTong)
+
+	var xInternalTang float64
+	_ = h.Tags[0].Extensions.GetOrZero("x-internal-tang").Decode(&xInternalTang)
+
 	assert.Len(t, h.Tags, 2)
 	assert.Equal(t, "Burgers", h.Tags[0].Name)
 	assert.Equal(t, "All kinds of yummy burgers.", h.Tags[0].Description)
 	assert.Equal(t, "Find out more", h.Tags[0].ExternalDocs.Description)
 	assert.Equal(t, "https://pb33f.io", h.Tags[0].ExternalDocs.URL)
-	assert.Equal(t, "somethingSpecial", h.Tags[0].Extensions["x-internal-ting"])
+	assert.Equal(t, "somethingSpecial", xInternalTing)
-	assert.Equal(t, int64(1), h.Tags[0].Extensions["x-internal-tong"])
+	assert.Equal(t, int64(1), xInternalTong)
-	assert.Equal(t, 1.2, h.Tags[0].Extensions["x-internal-tang"])
+	assert.Equal(t, 1.2, xInternalTang)
-	assert.True(t, h.Tags[0].Extensions["x-internal-tung"].(bool))
+
+	var tung bool
+	_ = h.Tags[0].Extensions.GetOrZero("x-internal-tung").Decode(&tung)
+	assert.True(t, tung)
 
 	wentLow := h.Tags[1].GoLow()
 	assert.Equal(t, 39, wentLow.Description.KeyNode.Line)
@@ -191,7 +208,10 @@ func TestNewDocument_Components_Callbacks(t *testing.T) {
 		h.Components.Callbacks.GetOrZero("BurgerCallback").GoLow().FindExpression("{$request.query.queryUrl}").ValueNode.Column,
 	)
 
-	assert.Equal(t, "please", h.Components.Callbacks.GetOrZero("BurgerCallback").Extensions["x-break-everything"])
+	var xBreakEverything string
+	_ = h.Components.Callbacks.GetOrZero("BurgerCallback").Extensions.GetOrZero("x-break-everything").Decode(&xBreakEverything)
+
+	assert.Equal(t, "please", xBreakEverything)
 
 	for pair := orderedmap.First(h.Components.GoLow().Callbacks.Value); pair != nil; pair = pair.Next() {
 		if pair.Key().Value == "BurgerCallback" {
@@ -209,7 +229,9 @@ func TestNewDocument_Components_Schemas(t *testing.T) {
 	goLow := h.Components.GoLow()
 
 	a := h.Components.Schemas.GetOrZero("Error")
-	abcd := a.Schema().Properties.GetOrZero("message").Schema().Example
+
+	var abcd string
+	_ = a.Schema().Properties.GetOrZero("message").Schema().Example.Decode(&abcd)
 	assert.Equal(t, "No such burger as 'Big-Whopper'", abcd)
 	assert.Equal(t, 433, goLow.Schemas.KeyNode.Line)
 	assert.Equal(t, 3, goLow.Schemas.KeyNode.Column)
@@ -218,13 +240,21 @@ func TestNewDocument_Components_Schemas(t *testing.T) {
 	b := h.Components.Schemas.GetOrZero("Burger")
 	assert.Len(t, b.Schema().Required, 2)
 	assert.Equal(t, "golden slices of happy fun joy", b.Schema().Properties.GetOrZero("fries").Schema().Description)
-	assert.Equal(t, int64(2), b.Schema().Properties.GetOrZero("numPatties").Schema().Example)
+
+	var numPattiesExample int64
+	_ = b.Schema().Properties.GetOrZero("numPatties").Schema().Example.Decode(&numPattiesExample)
+
+	assert.Equal(t, int64(2), numPattiesExample)
 	assert.Equal(t, 448, goLow.FindSchema("Burger").Value.Schema().Properties.KeyNode.Line)
 	assert.Equal(t, 7, goLow.FindSchema("Burger").Value.Schema().Properties.KeyNode.Column)
 	assert.Equal(t, 450, b.Schema().GoLow().FindProperty("name").ValueNode.Line)
 
 	f := h.Components.Schemas.GetOrZero("Fries")
-	assert.Equal(t, "salt", f.Schema().Properties.GetOrZero("seasoning").Schema().Items.A.Schema().Example)
+
+	var seasoningExample string
+	_ = f.Schema().Properties.GetOrZero("seasoning").Schema().Items.A.Schema().Example.Decode(&seasoningExample)
+
+	assert.Equal(t, "salt", seasoningExample)
 	assert.Len(t, f.Schema().Properties.GetOrZero("favoriteDrink").Schema().Properties.GetOrZero("drinkType").Schema().Enum, 1)
 
 	d := h.Components.Schemas.GetOrZero("Drink")
@@ -240,7 +270,11 @@ func TestNewDocument_Components_Schemas(t *testing.T) {
 	assert.Equal(t, 523, pl.Schema().XML.GoLow().Name.ValueNode.Line)
 
 	ext := h.Components.Extensions
-	assert.Equal(t, "loud", ext["x-screaming-baby"])
+
+	var xScreamingBaby string
+	_ = ext.GetOrZero("x-screaming-baby").Decode(&xScreamingBaby)
+
+	assert.Equal(t, "loud", xScreamingBaby)
 }
 
 func TestNewDocument_Components_Headers(t *testing.T) {
@@ -319,8 +353,12 @@ func TestNewDocument_Components_Parameters(t *testing.T) {
 	assert.Equal(t, "burgerHeader", bh.Name)
 	assert.Equal(t, 392, bh.GoLow().Name.KeyNode.Line)
 	assert.Equal(t, 2, orderedmap.Len(bh.Schema.Schema().Properties))
-	assert.Equal(t, "big-mac", bh.Example)
+
-	assert.True(t, bh.Required)
+	var example string
+	_ = bh.Example.Decode(&example)
+
+	assert.Equal(t, "big-mac", example)
+	assert.True(t, *bh.Required)
 	assert.Equal(
 		t,
 		"this is a header",
@@ -341,8 +379,12 @@ func TestNewDocument_Paths(t *testing.T) {
 func testBurgerShop(t *testing.T, h *Document, checkLines bool) {
 	burgersOp := h.Paths.PathItems.GetOrZero("/burgers")
 
-	assert.Len(t, burgersOp.GetOperations(), 1)
+	assert.Equal(t, 1, burgersOp.GetOperations().Len())
-	assert.Equal(t, "meaty", burgersOp.Extensions["x-burger-meta"])
+
+	var xBurgerMeta string
+	_ = burgersOp.Extensions.GetOrZero("x-burger-meta").Decode(&xBurgerMeta)
+
+	assert.Equal(t, "meaty", xBurgerMeta)
 	assert.Nil(t, burgersOp.Get)
 	assert.Nil(t, burgersOp.Put)
 	assert.Nil(t, burgersOp.Patch)

datamodel/high/v3/encoding.go

@@ -15,7 +15,7 @@ import (
 //   - https://spec.openapis.org/oas/v3.1.0#encoding-object
 type Encoding struct {
 	ContentType   string                           `json:"contentType,omitempty" yaml:"contentType,omitempty"`
-	Headers       orderedmap.Map[string, *Header] `json:"headers,omitempty" yaml:"headers,omitempty"`
+	Headers       *orderedmap.Map[string, *Header] `json:"headers,omitempty" yaml:"headers,omitempty"`
 	Style         string                           `json:"style,omitempty" yaml:"style,omitempty"`
 	Explode       *bool                            `json:"explode,omitempty" yaml:"explode,omitempty"`
 	AllowReserved bool                             `json:"allowReserved,omitempty" yaml:"allowReserved,omitempty"`
@@ -28,7 +28,9 @@ func NewEncoding(encoding *low.Encoding) *Encoding {
 	e.low = encoding
 	e.ContentType = encoding.ContentType.Value
 	e.Style = encoding.Style.Value
+	if !encoding.Explode.IsEmpty() {
 		e.Explode = &encoding.Explode.Value
+	}
 	e.AllowReserved = encoding.AllowReserved.Value
 	e.Headers = ExtractHeaders(encoding.Headers.Value)
 	return e
@@ -56,7 +58,7 @@ func (e *Encoding) MarshalYAML() (interface{}, error) {
 }
 
 // ExtractEncoding converts hard to navigate low-level plumbing Encoding definitions, into a high-level simple map
-func ExtractEncoding(elements orderedmap.Map[lowmodel.KeyReference[string], lowmodel.ValueReference[*low.Encoding]]) orderedmap.Map[string, *Encoding] {
+func ExtractEncoding(elements *orderedmap.Map[lowmodel.KeyReference[string], lowmodel.ValueReference[*low.Encoding]]) *orderedmap.Map[string, *Encoding] {
 	extracted := orderedmap.New[string, *Encoding]()
 	for pair := orderedmap.First(elements); pair != nil; pair = pair.Next() {
 		extracted.Set(pair.Key().Value, NewEncoding(pair.Value().Value))

datamodel/high/v3/header.go

@@ -24,10 +24,10 @@ type Header struct {
 	Explode         bool                                       `json:"explode,omitempty" yaml:"explode,omitempty"`
 	AllowReserved   bool                                       `json:"allowReserved,omitempty" yaml:"allowReserved,omitempty"`
 	Schema          *highbase.SchemaProxy                      `json:"schema,omitempty" yaml:"schema,omitempty"`
-	Example         any                                       `json:"example,omitempty" yaml:"example,omitempty"`
+	Example         *yaml.Node                                 `json:"example,omitempty" yaml:"example,omitempty"`
-	Examples        orderedmap.Map[string, *highbase.Example] `json:"examples,omitempty" yaml:"examples,omitempty"`
+	Examples        *orderedmap.Map[string, *highbase.Example] `json:"examples,omitempty" yaml:"examples,omitempty"`
-	Content         orderedmap.Map[string, *MediaType]        `json:"content,omitempty" yaml:"content,omitempty"`
+	Content         *orderedmap.Map[string, *MediaType]        `json:"content,omitempty" yaml:"content,omitempty"`
-	Extensions      map[string]any                            `json:"-" yaml:"-"`
+	Extensions      *orderedmap.Map[string, *yaml.Node]        `json:"-" yaml:"-"`
 	low             *low.Header
 }
 
@@ -52,6 +52,7 @@ func NewHeader(header *low.Header) *Header {
 	h.Content = ExtractContent(header.Content.Value)
 	h.Example = header.Example.Value
 	h.Examples = highbase.ExtractExamples(header.Examples.Value)
+	h.Extensions = high.ExtractExtensions(header.Extensions)
 	return h
 }
 
@@ -66,7 +67,7 @@ func (h *Header) GoLowUntyped() any {
 }
 
 // ExtractHeaders will extract a hard to navigate low-level Header map, into simple high-level one.
-func ExtractHeaders(elements orderedmap.Map[lowmodel.KeyReference[string], lowmodel.ValueReference[*low.Header]]) orderedmap.Map[string, *Header] {
+func ExtractHeaders(elements *orderedmap.Map[lowmodel.KeyReference[string], lowmodel.ValueReference[*low.Header]]) *orderedmap.Map[string, *Header] {
 	extracted := orderedmap.New[string, *Header]()
 	for pair := orderedmap.First(elements); pair != nil; pair = pair.Next() {
 		extracted.Set(pair.Key().Value, NewHeader(pair.Value().Value))

datamodel/high/v3/header_test.go

@@ -9,10 +9,14 @@ import (
 
 	"github.com/pb33f/libopenapi/datamodel/high/base"
 	"github.com/pb33f/libopenapi/orderedmap"
+	"github.com/pb33f/libopenapi/utils"
 	"github.com/stretchr/testify/assert"
+	"gopkg.in/yaml.v3"
 )
 
 func TestHeader_MarshalYAML(t *testing.T) {
+	ext := orderedmap.New[string, *yaml.Node]()
+	ext.Set("x-burgers", utils.CreateStringNode("why not?"))
 
 	header := &Header{
 		Description:     "A header",
@@ -22,11 +26,11 @@ func TestHeader_MarshalYAML(t *testing.T) {
 		Style:           "simple",
 		Explode:         true,
 		AllowReserved:   true,
-		Example:         "example",
+		Example:         utils.CreateStringNode("example"),
 		Examples: orderedmap.ToOrderedMap(map[string]*base.Example{
-			"example": {Value: "example"},
+			"example": {Value: utils.CreateStringNode("example")},
 		}),
-		Extensions: map[string]interface{}{"x-burgers": "why not?"},
+		Extensions: ext,
 	}
 
 	rend, _ := header.Render()
@@ -45,5 +49,4 @@ examples:
 x-burgers: why not?`
 
 	assert.Equal(t, desired, strings.TrimSpace(string(rend)))
-
 }

datamodel/high/v3/link.go

@@ -25,11 +25,11 @@ import (
 type Link struct {
 	OperationRef string                              `json:"operationRef,omitempty" yaml:"operationRef,omitempty"`
 	OperationId  string                              `json:"operationId,omitempty" yaml:"operationId,omitempty"`
-	Parameters   orderedmap.Map[string, string] `json:"parameters,omitempty" yaml:"parameters,omitempty"`
+	Parameters   *orderedmap.Map[string, string]     `json:"parameters,omitempty" yaml:"parameters,omitempty"`
 	RequestBody  string                              `json:"requestBody,omitempty" yaml:"requestBody,omitempty"`
 	Description  string                              `json:"description,omitempty" yaml:"description,omitempty"`
 	Server       *Server                             `json:"server,omitempty" yaml:"server,omitempty"`
-	Extensions   map[string]any                 `json:"-" yaml:"-"`
+	Extensions   *orderedmap.Map[string, *yaml.Node] `json:"-" yaml:"-"`
 	low          *low.Link
 }
 

datamodel/high/v3/media_type.go

@@ -4,6 +4,7 @@
 package v3
 
 import (
+	"github.com/pb33f/libopenapi/datamodel"
 	"github.com/pb33f/libopenapi/datamodel/high"
 	"github.com/pb33f/libopenapi/datamodel/high/base"
 	lowmodel "github.com/pb33f/libopenapi/datamodel/low"
@@ -19,9 +20,9 @@ import (
 type MediaType struct {
 	Schema     *base.SchemaProxy                      `json:"schema,omitempty" yaml:"schema,omitempty"`
 	Example    any                                    `json:"example,omitempty" yaml:"example,omitempty"`
-	Examples   orderedmap.Map[string, *base.Example] `json:"examples,omitempty" yaml:"examples,omitempty"`
+	Examples   *orderedmap.Map[string, *base.Example] `json:"examples,omitempty" yaml:"examples,omitempty"`
-	Encoding   orderedmap.Map[string, *Encoding]     `json:"encoding,omitempty" yaml:"encoding,omitempty"`
+	Encoding   *orderedmap.Map[string, *Encoding]     `json:"encoding,omitempty" yaml:"encoding,omitempty"`
-	Extensions map[string]any                        `json:"-" yaml:"-"`
+	Extensions *orderedmap.Map[string, *yaml.Node]    `json:"-" yaml:"-"`
 	low        *low.MediaType
 }
 
@@ -73,7 +74,7 @@ func (m *MediaType) MarshalYAMLInline() (interface{}, error) {
 
 // ExtractContent takes in a complex and hard to navigate low-level content map, and converts it in to a much simpler
 // and easier to navigate high-level one.
-func ExtractContent(elements orderedmap.Map[lowmodel.KeyReference[string], lowmodel.ValueReference[*low.MediaType]]) orderedmap.Map[string, *MediaType] {
+func ExtractContent(elements *orderedmap.Map[lowmodel.KeyReference[string], lowmodel.ValueReference[*low.MediaType]]) *orderedmap.Map[string, *MediaType] {
 	extracted := orderedmap.New[string, *MediaType]()
 	translateFunc := func(pair orderedmap.Pair[lowmodel.KeyReference[string], lowmodel.ValueReference[*low.MediaType]]) (asyncResult[*MediaType], error) {
 		return asyncResult[*MediaType]{
@@ -85,6 +86,6 @@ func ExtractContent(elements orderedmap.Map[lowmodel.KeyReference[string], lowmo
 		extracted.Set(value.key, value.result)
 		return nil
 	}
-	_ = orderedmap.TranslateMapParallel(elements, translateFunc, resultFunc)
+	_ = datamodel.TranslateMapParallel(elements, translateFunc, resultFunc)
 	return extracted
 }

datamodel/high/v3/media_type_test.go

@@ -35,8 +35,7 @@ func TestMediaType_MarshalYAMLInline(t *testing.T) {
 	yml, _ := mt.Render()
 
 	// the rendered output should be a ref to the media type.
-	op := `schema:
+	op := `schema: {"$ref": "#/components/schemas/Pet"}`
-    $ref: '#/components/schemas/Pet'`
 
 	assert.Equal(t, op, strings.TrimSpace(string(yml)))
 
@@ -45,30 +44,30 @@ func TestMediaType_MarshalYAMLInline(t *testing.T) {
 
 	op = `schema:
     required:
-        - name
+        - "name"
-        - photoUrls
+        - "photoUrls"
     type: "object"
     properties:
-        id:
+        "id":
             type: "integer"
             format: "int64"
             example: 10
-        name:
+        "name":
             type: "string"
             example: "doggie"
-        category:
+        "category":
             type: "object"
             properties:
-                id:
+                "id":
                     type: "integer"
                     format: "int64"
                     example: 1
-                name:
+                "name":
                     type: "string"
                     example: "Dogs"
             xml:
                 name: "category"
-        photoUrls:
+        "photoUrls":
             type: "array"
             xml:
                 wrapped: true
@@ -76,27 +75,27 @@ func TestMediaType_MarshalYAMLInline(t *testing.T) {
                 type: "string"
                 xml:
                     name: "photoUrl"
-        tags:
+        "tags":
             type: "array"
             xml:
                 wrapped: true
             items:
                 type: "object"
                 properties:
-                    id:
+                    "id":
                         type: "integer"
                         format: "int64"
-                    name:
+                    "name":
                         type: "string"
                 xml:
                     name: "tag"
-        status:
+        "status":
             type: "string"
             description: "pet status in the store"
             enum:
-                - available
+                - "available"
-                - pending
+                - "pending"
-                - sold
+                - "sold"
     xml:
         name: "pet"
 example: testing a nice mutation`
@@ -104,7 +103,6 @@ example: testing a nice mutation`
 	yml, _ = mt.RenderInline()
 
 	assert.Equal(t, op, strings.TrimSpace(string(yml)))
-
 }
 
 func TestMediaType_MarshalYAML(t *testing.T) {
@@ -125,22 +123,19 @@ func TestMediaType_MarshalYAML(t *testing.T) {
 	yml, _ := mt.Render()
 
 	// the rendered output should be a ref to the media type.
-	op := `schema:
+	op := `schema: {"$ref": "#/components/schemas/Pet"}`
-    $ref: '#/components/schemas/Pet'`
 
 	assert.Equal(t, op, strings.TrimSpace(string(yml)))
 
 	// modify the media type to have an example
 	mt.Example = "testing a nice mutation"
 
-	op = `schema:
+	op = `schema: {"$ref": "#/components/schemas/Pet"}
-    $ref: '#/components/schemas/Pet'
 example: testing a nice mutation`
 
 	yml, _ = mt.Render()
 
 	assert.Equal(t, op, strings.TrimSpace(string(yml)))
-
 }
 
 func TestMediaType_Examples(t *testing.T) {

datamodel/high/v3/oauth_flow.go

@@ -16,8 +16,8 @@ type OAuthFlow struct {
 	AuthorizationUrl string                              `json:"authorizationUrl,omitempty" yaml:"authorizationUrl,omitempty"`
 	TokenUrl         string                              `json:"tokenUrl,omitempty" yaml:"tokenUrl,omitempty"`
 	RefreshUrl       string                              `json:"refreshUrl,omitempty" yaml:"refreshUrl,omitempty"`
-	Scopes           orderedmap.Map[string, string] `json:"scopes,omitempty" yaml:"scopes,omitempty"`
+	Scopes           *orderedmap.Map[string, string]     `json:"scopes,omitempty" yaml:"scopes,omitempty"`
-	Extensions       map[string]any                 `json:"-" yaml:"-"`
+	Extensions       *orderedmap.Map[string, *yaml.Node] `json:"-" yaml:"-"`
 	low              *low.OAuthFlow
 }
 
@@ -29,7 +29,7 @@ func NewOAuthFlow(flow *low.OAuthFlow) *OAuthFlow {
 	o.AuthorizationUrl = flow.AuthorizationUrl.Value
 	o.RefreshUrl = flow.RefreshUrl.Value
 	scopes := orderedmap.New[string, string]()
-	for pair := flow.Scopes.Value.First(); pair != nil; pair = pair.Next() {
+	for pair := orderedmap.First(flow.Scopes.Value); pair != nil; pair = pair.Next() {
 		scopes.Set(pair.Key().Value, pair.Value().Value)
 	}
 	o.Scopes = scopes

datamodel/high/v3/oauth_flow_test.go

@@ -8,7 +8,9 @@ import (
 	"testing"
 
 	"github.com/pb33f/libopenapi/orderedmap"
+	"github.com/pb33f/libopenapi/utils"
 	"github.com/stretchr/testify/assert"
+	"gopkg.in/yaml.v3"
 )
 
 func TestOAuthFlow_MarshalYAML(t *testing.T) {
@@ -37,7 +39,9 @@ scopes:
 
 	// mutate
 	oflow.Scopes = nil
-	oflow.Extensions = map[string]interface{}{"x-burgers": "why not?"}
+	ext := orderedmap.New[string, *yaml.Node]()
+	ext.Set("x-burgers", utils.CreateStringNode("why not?"))
+	oflow.Extensions = ext
 
 	desired = `authorizationUrl: https://pb33f.io
 tokenUrl: https://pb33f.io/token

datamodel/high/v3/oauth_flows.go

@@ -6,6 +6,7 @@ package v3
 import (
 	"github.com/pb33f/libopenapi/datamodel/high"
 	low "github.com/pb33f/libopenapi/datamodel/low/v3"
+	"github.com/pb33f/libopenapi/orderedmap"
 	"gopkg.in/yaml.v3"
 )
 
@@ -16,7 +17,7 @@ type OAuthFlows struct {
 	Password          *OAuthFlow                          `json:"password,omitempty" yaml:"password,omitempty"`
 	ClientCredentials *OAuthFlow                          `json:"clientCredentials,omitempty" yaml:"clientCredentials,omitempty"`
 	AuthorizationCode *OAuthFlow                          `json:"authorizationCode,omitempty" yaml:"authorizationCode,omitempty"`
-	Extensions        map[string]any `json:"-" yaml:"-"`
+	Extensions        *orderedmap.Map[string, *yaml.Node] `json:"-" yaml:"-"`
 	low               *low.OAuthFlows
 }
 

datamodel/high/v3/operation.go

@@ -25,11 +25,11 @@ type Operation struct {
 	Parameters   []*Parameter                        `json:"parameters,omitempty" yaml:"parameters,omitempty"`
 	RequestBody  *RequestBody                        `json:"requestBody,omitempty" yaml:"requestBody,omitempty"`
 	Responses    *Responses                          `json:"responses,omitempty" yaml:"responses,omitempty"`
-	Callbacks    orderedmap.Map[string, *Callback] `json:"callbacks,omitempty" yaml:"callbacks,omitempty"`
+	Callbacks    *orderedmap.Map[string, *Callback]  `json:"callbacks,omitempty" yaml:"callbacks,omitempty"`
 	Deprecated   *bool                               `json:"deprecated,omitempty" yaml:"deprecated,omitempty"`
 	Security     []*base.SecurityRequirement         `json:"security,omitempty" yaml:"security,omitempty"`
 	Servers      []*Server                           `json:"servers,omitempty" yaml:"servers,omitempty"`
-	Extensions   map[string]any                    `json:"-" yaml:"-"`
+	Extensions   *orderedmap.Map[string, *yaml.Node] `json:"-" yaml:"-"`
 	low          *low.Operation
 }
 
@@ -45,7 +45,9 @@ func NewOperation(operation *low.Operation) *Operation {
 	}
 	o.Tags = tags
 	o.Summary = operation.Summary.Value
+	if !operation.Deprecated.IsEmpty() {
 		o.Deprecated = &operation.Deprecated.Value
+	}
 	o.Description = operation.Description.Value
 	if !operation.ExternalDocs.IsEmpty() {
 		o.ExternalDocs = base.NewExternalDoc(operation.ExternalDocs.Value)

datamodel/high/v3/operation_test.go

@@ -50,13 +50,13 @@ callbacks:
 
 	assert.Equal(t, "https://pb33f.io", r.ExternalDocs.URL)
 	assert.Equal(t, 1, r.GoLow().ExternalDocs.KeyNode.Line)
-	assert.Contains(t, r.Callbacks, "testCallback")
+
-	assert.Contains(t, r.Callbacks.GetOrZero("testCallback").Expression, "{$request.body#/callbackUrl}")
+	assert.NotNil(t, r.Callbacks.GetOrZero("testCallback"))
+	assert.NotNil(t, r.Callbacks.GetOrZero("testCallback").Expression.GetOrZero("{$request.body#/callbackUrl}"))
 	assert.Equal(t, 3, r.GoLow().Callbacks.KeyNode.Line)
 }
 
 func TestOperation_MarshalYAML(t *testing.T) {
-
 	op := &Operation{
 		Tags:        []string{"test"},
 		Summary:     "nice",
@@ -90,11 +90,9 @@ requestBody:
     description: dice`
 
 	assert.Equal(t, desired, strings.TrimSpace(string(rend)))
-
 }
 
 func TestOperation_MarshalYAMLInline(t *testing.T) {
-
 	op := &Operation{
 		Tags:        []string{"test"},
 		Summary:     "nice",
@@ -128,7 +126,6 @@ requestBody:
     description: dice`
 
 	assert.Equal(t, desired, strings.TrimSpace(string(rend)))
-
 }
 
 func TestOperation_EmptySecurity(t *testing.T) {
@@ -147,7 +144,6 @@ security: []`
 
 	assert.NotNil(t, r.Security)
 	assert.Len(t, r.Security, 0)
-
 }
 
 func TestOperation_NoSecurity(t *testing.T) {
@@ -164,5 +160,4 @@ func TestOperation_NoSecurity(t *testing.T) {
 	r := NewOperation(&n)
 
 	assert.Nil(t, r.Security)
-
 }

datamodel/high/v3/parameter.go

@@ -19,17 +19,17 @@ type Parameter struct {
 	Name            string                                 `json:"name,omitempty" yaml:"name,omitempty"`
 	In              string                                 `json:"in,omitempty" yaml:"in,omitempty"`
 	Description     string                                 `json:"description,omitempty" yaml:"description,omitempty"`
-	Required        bool                                  `json:"required,omitempty" yaml:"required,omitempty"`
+	Required        *bool                                  `json:"required,renderZero,omitempty" yaml:"required,renderZero,omitempty"`
 	Deprecated      bool                                   `json:"deprecated,omitempty" yaml:"deprecated,omitempty"`
 	AllowEmptyValue bool                                   `json:"allowEmptyValue,omitempty" yaml:"allowEmptyValue,omitempty"`
 	Style           string                                 `json:"style,omitempty" yaml:"style,omitempty"`
-	Explode         *bool                                 `json:"explode,omitempty" yaml:"explode,omitempty"`
+	Explode         *bool                                  `json:"explode,renderZero,omitempty" yaml:"explode,renderZero,omitempty"`
 	AllowReserved   bool                                   `json:"allowReserved,omitempty" yaml:"allowReserved,omitempty"`
 	Schema          *base.SchemaProxy                      `json:"schema,omitempty" yaml:"schema,omitempty"`
-	Example         any                                   `json:"example,omitempty" yaml:"example,omitempty"`
+	Example         *yaml.Node                             `json:"example,omitempty" yaml:"example,omitempty"`
-	Examples        orderedmap.Map[string, *base.Example] `json:"examples,omitempty" yaml:"examples,omitempty"`
+	Examples        *orderedmap.Map[string, *base.Example] `json:"examples,omitempty" yaml:"examples,omitempty"`
-	Content         orderedmap.Map[string, *MediaType]    `json:"content,omitempty" yaml:"content,omitempty"`
+	Content         *orderedmap.Map[string, *MediaType]    `json:"content,omitempty" yaml:"content,omitempty"`
-	Extensions      map[string]any                        `json:"-" yaml:"-"`
+	Extensions      *orderedmap.Map[string, *yaml.Node]    `json:"-" yaml:"-"`
 	low             *low.Parameter
 }
 
@@ -50,7 +50,9 @@ func NewParameter(param *low.Parameter) *Parameter {
 	if !param.Schema.IsEmpty() {
 		p.Schema = base.NewSchemaProxy(&param.Schema)
 	}
-	p.Required = param.Required.Value
+	if !param.Required.IsEmpty() {
+		p.Required = &param.Required.Value
+	}
 	p.Example = param.Example.Value
 	p.Examples = base.ExtractExamples(param.Examples.Value)
 	p.Content = ExtractContent(param.Content.Value)

datamodel/high/v3/parameter_test.go

@@ -9,10 +9,14 @@ import (
 
 	"github.com/pb33f/libopenapi/datamodel/high/base"
 	"github.com/pb33f/libopenapi/orderedmap"
+	"github.com/pb33f/libopenapi/utils"
 	"github.com/stretchr/testify/assert"
+	"gopkg.in/yaml.v3"
 )
 
 func TestParameter_MarshalYAML(t *testing.T) {
+	ext := orderedmap.New[string, *yaml.Node]()
+	ext.Set("x-burgers", utils.CreateStringNode("why not?"))
 
 	explode := true
 	param := Parameter{
@@ -23,11 +27,11 @@ func TestParameter_MarshalYAML(t *testing.T) {
 		Style:         "simple",
 		Explode:       &explode,
 		AllowReserved: true,
-		Example:       "example",
+		Example:       utils.CreateStringNode("example"),
 		Examples: orderedmap.ToOrderedMap(map[string]*base.Example{
-			"example": {Value: "example"},
+			"example": {Value: utils.CreateStringNode("example")},
 		}),
-		Extensions: map[string]interface{}{"x-burgers": "why not?"},
+		Extensions: ext,
 	}
 
 	rend, _ := param.Render()
@@ -49,6 +53,8 @@ x-burgers: why not?`
 }
 
 func TestParameter_MarshalYAMLInline(t *testing.T) {
+	ext := orderedmap.New[string, *yaml.Node]()
+	ext.Set("x-burgers", utils.CreateStringNode("why not?"))
 
 	explode := true
 	param := Parameter{
@@ -59,11 +65,11 @@ func TestParameter_MarshalYAMLInline(t *testing.T) {
 		Style:         "simple",
 		Explode:       &explode,
 		AllowReserved: true,
-		Example:       "example",
+		Example:       utils.CreateStringNode("example"),
 		Examples: orderedmap.ToOrderedMap(map[string]*base.Example{
-			"example": {Value: "example"},
+			"example": {Value: utils.CreateStringNode("example")},
 		}),
-		Extensions: map[string]interface{}{"x-burgers": "why not?"},
+		Extensions: ext,
 	}
 
 	rend, _ := param.RenderInline()
@@ -85,7 +91,6 @@ x-burgers: why not?`
 }
 
 func TestParameter_IsExploded(t *testing.T) {
-
 	explode := true
 	param := Parameter{
 		Explode: &explode,
@@ -106,7 +111,6 @@ func TestParameter_IsExploded(t *testing.T) {
 }
 
 func TestParameter_IsDefaultFormEncoding(t *testing.T) {
-
 	param := Parameter{}
 	assert.True(t, param.IsDefaultFormEncoding())
 
@@ -133,7 +137,6 @@ func TestParameter_IsDefaultFormEncoding(t *testing.T) {
 }
 
 func TestParameter_IsDefaultHeaderEncoding(t *testing.T) {
-
 	param := Parameter{}
 	assert.True(t, param.IsDefaultHeaderEncoding())
 
@@ -163,8 +166,6 @@ func TestParameter_IsDefaultHeaderEncoding(t *testing.T) {
 }
 
 func TestParameter_IsDefaultPathEncoding(t *testing.T) {
-
 	param := Parameter{}
 	assert.True(t, param.IsDefaultPathEncoding())
-
 }

datamodel/high/v3/path_item.go

@@ -4,8 +4,13 @@
 package v3
 
 import (
+	"reflect"
+	"slices"
+
 	"github.com/pb33f/libopenapi/datamodel/high"
-	low "github.com/pb33f/libopenapi/datamodel/low/v3"
+	"github.com/pb33f/libopenapi/datamodel/low"
+	lowV3 "github.com/pb33f/libopenapi/datamodel/low/v3"
+	"github.com/pb33f/libopenapi/orderedmap"
 	"gopkg.in/yaml.v3"
 )
 
@@ -39,12 +44,12 @@ type PathItem struct {
 	Trace       *Operation                          `json:"trace,omitempty" yaml:"trace,omitempty"`
 	Servers     []*Server                           `json:"servers,omitempty" yaml:"servers,omitempty"`
 	Parameters  []*Parameter                        `json:"parameters,omitempty" yaml:"parameters,omitempty"`
-	Extensions  map[string]any `json:"-" yaml:"-"`
+	Extensions  *orderedmap.Map[string, *yaml.Node] `json:"-" yaml:"-"`
-	low         *low.PathItem
+	low         *lowV3.PathItem
 }
 
 // NewPathItem creates a new high-level PathItem instance from a low-level one.
-func NewPathItem(pathItem *low.PathItem) *PathItem {
+func NewPathItem(pathItem *lowV3.PathItem) *PathItem {
 	pi := new(PathItem)
 	pi.low = pathItem
 	pi.Description = pathItem.Description.Value
@@ -62,7 +67,7 @@ func NewPathItem(pathItem *low.PathItem) *PathItem {
 		op     *Operation
 	}
 	opChan := make(chan opResult)
-	var buildOperation = func(method int, op *low.Operation, c chan opResult) {
+	buildOperation := func(method int, op *lowV3.Operation, c chan opResult) {
 		if op == nil {
 			c <- opResult{method: method, op: nil}
 			return
@@ -120,7 +125,7 @@ func NewPathItem(pathItem *low.PathItem) *PathItem {
 }
 
 // GoLow returns the low level instance of PathItem, used to build the high-level one.
-func (p *PathItem) GoLow() *low.PathItem {
+func (p *PathItem) GoLow() *lowV3.PathItem {
 	return p.low
 }
 
@@ -129,32 +134,65 @@ func (p *PathItem) GoLowUntyped() any {
 	return p.low
 }
 
-func (p *PathItem) GetOperations() map[string]*Operation {
+func (p *PathItem) GetOperations() *orderedmap.Map[string, *Operation] {
-	o := make(map[string]*Operation)
+	o := orderedmap.New[string, *Operation]()
+
+	// TODO: this is a bit of a hack, but it works for now. We might just want to actually pull the data out of the document as a map and split it into the individual operations
+
+	type op struct {
+		name string
+		op   *Operation
+		line int
+	}
+
+	getLine := func(field string, idx int) int {
+		if p.GoLow() == nil {
+			return idx
+		}
+
+		l, ok := reflect.ValueOf(p.GoLow()).Elem().FieldByName(field).Interface().(low.NodeReference[*lowV3.Operation])
+		if !ok || l.GetKeyNode() == nil {
+			return idx
+		}
+
+		return l.GetKeyNode().Line
+	}
+
+	ops := []op{}
+
 	if p.Get != nil {
-		o[low.GetLabel] = p.Get
+		ops = append(ops, op{name: lowV3.GetLabel, op: p.Get, line: getLine("Get", -8)})
 	}
 	if p.Put != nil {
-		o[low.PutLabel] = p.Put
+		ops = append(ops, op{name: lowV3.PutLabel, op: p.Put, line: getLine("Put", -7)})
 	}
 	if p.Post != nil {
-		o[low.PostLabel] = p.Post
+		ops = append(ops, op{name: lowV3.PostLabel, op: p.Post, line: getLine("Post", -6)})
 	}
 	if p.Delete != nil {
-		o[low.DeleteLabel] = p.Delete
+		ops = append(ops, op{name: lowV3.DeleteLabel, op: p.Delete, line: getLine("Delete", -5)})
 	}
 	if p.Options != nil {
-		o[low.OptionsLabel] = p.Options
+		ops = append(ops, op{name: lowV3.OptionsLabel, op: p.Options, line: getLine("Options", -4)})
 	}
 	if p.Head != nil {
-		o[low.HeadLabel] = p.Head
+		ops = append(ops, op{name: lowV3.HeadLabel, op: p.Head, line: getLine("Head", -3)})
 	}
 	if p.Patch != nil {
-		o[low.PatchLabel] = p.Patch
+		ops = append(ops, op{name: lowV3.PatchLabel, op: p.Patch, line: getLine("Patch", -2)})
 	}
 	if p.Trace != nil {
-		o[low.TraceLabel] = p.Trace
+		ops = append(ops, op{name: lowV3.TraceLabel, op: p.Trace, line: getLine("Trace", -1)})
 	}
+
+	slices.SortStableFunc(ops, func(a op, b op) int {
+		return a.line - b.line
+	})
+
+	for _, op := range ops {
+		o.Set(op.name, op.op)
+	}
+
 	return o
 }
 

datamodel/high/v3/path_item_test.go

@@ -67,11 +67,19 @@ trace:
 
 	r := NewPathItem(&n)
 
-	assert.Len(t, r.GetOperations(), 8)
+	assert.Equal(t, 8, r.GetOperations().Len())
+
+	// test that the operations are in the correct order
+	expectedOrder := []string{"get", "put", "post", "patch", "delete", "head", "options", "trace"}
+
+	i := 0
+	for pair := r.GetOperations().First(); pair != nil; pair = pair.Next() {
+		assert.Equal(t, expectedOrder[i], pair.Value().Description)
+		i++
+	}
 }
 
 func TestPathItem_MarshalYAML(t *testing.T) {
-
 	pi := &PathItem{
 		Description: "a path item",
 		Summary:     "It's a test, don't worry about it, Jim",
@@ -112,7 +120,6 @@ parameters:
 }
 
 func TestPathItem_MarshalYAMLInline(t *testing.T) {
-
 	pi := &PathItem{
 		Description: "a path item",
 		Summary:     "It's a test, don't worry about it, Jim",

datamodel/high/v3/paths.go

@@ -22,8 +22,8 @@ import (
 // constraints.
 //   - https://spec.openapis.org/oas/v3.1.0#paths-object
 type Paths struct {
-	PathItems  orderedmap.Map[string, *PathItem] `json:"-" yaml:"-"`
+	PathItems  *orderedmap.Map[string, *PathItem]  `json:"-" yaml:"-"`
-	Extensions map[string]any                    `json:"-" yaml:"-"`
+	Extensions *orderedmap.Map[string, *yaml.Node] `json:"-" yaml:"-"`
 	low        *v3low.Paths
 }
 
@@ -81,6 +81,7 @@ func (p *Paths) MarshalYAML() (interface{}, error) {
 		pi       *PathItem
 		path     string
 		line     int
+		style    yaml.Style
 		rendered *yaml.Node
 	}
 	var mapped []*pathItem
@@ -89,13 +90,21 @@ func (p *Paths) MarshalYAML() (interface{}, error) {
 		k := pair.Key()
 		pi := pair.Value()
 		ln := 9999 // default to a high value to weight new content to the bottom.
+		var style yaml.Style
 		if p.low != nil {
 			lpi := p.low.FindPath(k)
 			if lpi != nil {
 				ln = lpi.ValueNode.Line
 			}
+
+			for pair := orderedmap.First(p.low.PathItems); pair != nil; pair = pair.Next() {
+				if pair.Key().Value == k {
+					style = pair.Key().KeyNode.Style
+					break
 				}
-		mapped = append(mapped, &pathItem{pi, k, ln, nil})
+			}
+		}
+		mapped = append(mapped, &pathItem{pi, k, ln, style, nil})
 	}
 
 	nb := high.NewNodeBuilder(p, p.low)
@@ -107,23 +116,29 @@ func (p *Paths) MarshalYAML() (interface{}, error) {
 				label = extNode.Content[u].Value
 				continue
 			}
-			mapped = append(mapped, &pathItem{nil, label,
+			mapped = append(mapped, &pathItem{
-				extNode.Content[u].Line, extNode.Content[u]})
+				nil, label,
+				extNode.Content[u].Line, 0, extNode.Content[u],
+			})
 		}
 	}
 
 	sort.Slice(mapped, func(i, j int) bool {
 		return mapped[i].line < mapped[j].line
 	})
-	for j := range mapped {
+	for _, mp := range mapped {
-		if mapped[j].pi != nil {
+		if mp.pi != nil {
-			rendered, _ := mapped[j].pi.MarshalYAML()
+			rendered, _ := mp.pi.MarshalYAML()
-			m.Content = append(m.Content, utils.CreateStringNode(mapped[j].path))
+
+			kn := utils.CreateStringNode(mp.path)
+			kn.Style = mp.style
+
+			m.Content = append(m.Content, kn)
 			m.Content = append(m.Content, rendered.(*yaml.Node))
 		}
-		if mapped[j].rendered != nil {
+		if mp.rendered != nil {
-			m.Content = append(m.Content, utils.CreateStringNode(mapped[j].path))
+			m.Content = append(m.Content, utils.CreateStringNode(mp.path))
-			m.Content = append(m.Content, mapped[j].rendered)
+			m.Content = append(m.Content, mp.rendered)
 		}
 	}
 
@@ -137,6 +152,7 @@ func (p *Paths) MarshalYAMLInline() (interface{}, error) {
 		pi       *PathItem
 		path     string
 		line     int
+		style    yaml.Style
 		rendered *yaml.Node
 	}
 	var mapped []*pathItem
@@ -145,13 +161,21 @@ func (p *Paths) MarshalYAMLInline() (interface{}, error) {
 		k := pair.Key()
 		pi := pair.Value()
 		ln := 9999 // default to a high value to weight new content to the bottom.
+		var style yaml.Style
 		if p.low != nil {
 			lpi := p.low.FindPath(k)
 			if lpi != nil {
 				ln = lpi.ValueNode.Line
 			}
+
+			for pair := orderedmap.First(p.low.PathItems); pair != nil; pair = pair.Next() {
+				if pair.Key().Value == k {
+					style = pair.Key().KeyNode.Style
+					break
 				}
-		mapped = append(mapped, &pathItem{pi, k, ln, nil})
+			}
+		}
+		mapped = append(mapped, &pathItem{pi, k, ln, style, nil})
 	}
 
 	nb := high.NewNodeBuilder(p, p.low)
@@ -164,23 +188,29 @@ func (p *Paths) MarshalYAMLInline() (interface{}, error) {
 				label = extNode.Content[u].Value
 				continue
 			}
-			mapped = append(mapped, &pathItem{nil, label,
+			mapped = append(mapped, &pathItem{
-				extNode.Content[u].Line, extNode.Content[u]})
+				nil, label,
+				extNode.Content[u].Line, 0, extNode.Content[u],
+			})
 		}
 	}
 
 	sort.Slice(mapped, func(i, j int) bool {
 		return mapped[i].line < mapped[j].line
 	})
-	for j := range mapped {
+	for _, mp := range mapped {
-		if mapped[j].pi != nil {
+		if mp.pi != nil {
-			rendered, _ := mapped[j].pi.MarshalYAMLInline()
+			rendered, _ := mp.pi.MarshalYAMLInline()
-			m.Content = append(m.Content, utils.CreateStringNode(mapped[j].path))
+
+			kn := utils.CreateStringNode(mp.path)
+			kn.Style = mp.style
+
+			m.Content = append(m.Content, kn)
 			m.Content = append(m.Content, rendered.(*yaml.Node))
 		}
-		if mapped[j].rendered != nil {
+		if mp.rendered != nil {
-			m.Content = append(m.Content, utils.CreateStringNode(mapped[j].path))
+			m.Content = append(m.Content, utils.CreateStringNode(mp.path))
-			m.Content = append(m.Content, mapped[j].rendered)
+			m.Content = append(m.Content, mp.rendered)
 		}
 	}
 

datamodel/high/v3/request_body.go

@@ -14,9 +14,9 @@ import (
 //   - https://spec.openapis.org/oas/v3.1.0#request-body-object
 type RequestBody struct {
 	Description string                              `json:"description,omitempty" yaml:"description,omitempty"`
-	Content     orderedmap.Map[string, *MediaType] `json:"content,omitempty" yaml:"content,omitempty"`
+	Content     *orderedmap.Map[string, *MediaType] `json:"content,omitempty" yaml:"content,omitempty"`
 	Required    *bool                               `json:"required,omitempty" yaml:"required,renderZero,omitempty"`
-	Extensions  map[string]any                     `json:"-" yaml:"-"`
+	Extensions  *orderedmap.Map[string, *yaml.Node] `json:"-" yaml:"-"`
 	low         *low.RequestBody
 }
 
@@ -25,7 +25,7 @@ func NewRequestBody(rb *low.RequestBody) *RequestBody {
 	r := new(RequestBody)
 	r.low = rb
 	r.Description = rb.Description.Value
-	if rb.Required.ValueNode != nil {
+	if !rb.Required.IsEmpty() {
 		r.Required = &rb.Required.Value
 	}
 	r.Extensions = high.ExtractExtensions(rb.Extensions)

datamodel/high/v3/request_body_test.go

@@ -7,16 +7,21 @@ import (
 	"strings"
 	"testing"
 
+	"github.com/pb33f/libopenapi/orderedmap"
+	"github.com/pb33f/libopenapi/utils"
 	"github.com/stretchr/testify/assert"
+	"gopkg.in/yaml.v3"
 )
 
 func TestRequestBody_MarshalYAML(t *testing.T) {
+	ext := orderedmap.New[string, *yaml.Node]()
+	ext.Set("x-high-gravity", utils.CreateStringNode("why not?"))
 
 	rb := true
 	req := &RequestBody{
 		Description: "beer",
 		Required:    &rb,
-		Extensions:  map[string]interface{}{"x-high-gravity": "why not?"},
+		Extensions:  ext,
 	}
 
 	rend, _ := req.Render()
@@ -26,16 +31,17 @@ required: true
 x-high-gravity: why not?`
 
 	assert.Equal(t, desired, strings.TrimSpace(string(rend)))
-
 }
 
 func TestRequestBody_MarshalYAMLInline(t *testing.T) {
+	ext := orderedmap.New[string, *yaml.Node]()
+	ext.Set("x-high-gravity", utils.CreateStringNode("why not?"))
 
 	rb := true
 	req := &RequestBody{
 		Description: "beer",
 		Required:    &rb,
-		Extensions:  map[string]interface{}{"x-high-gravity": "why not?"},
+		Extensions:  ext,
 	}
 
 	rend, _ := req.RenderInline()
@@ -45,15 +51,17 @@ required: true
 x-high-gravity: why not?`
 
 	assert.Equal(t, desired, strings.TrimSpace(string(rend)))
-
 }
 
 func TestRequestBody_MarshalNoRequired(t *testing.T) {
+	ext := orderedmap.New[string, *yaml.Node]()
+	ext.Set("x-high-gravity", utils.CreateStringNode("why not?"))
+
 	rb := false
 	req := &RequestBody{
 		Description: "beer",
 		Required:    &rb,
-		Extensions:  map[string]interface{}{"x-high-gravity": "why not?"},
+		Extensions:  ext,
 	}
 
 	rend, _ := req.Render()
@@ -63,14 +71,15 @@ required: false
 x-high-gravity: why not?`
 
 	assert.Equal(t, desired, strings.TrimSpace(string(rend)))
-
 }
 
 func TestRequestBody_MarshalRequiredNil(t *testing.T) {
+	ext := orderedmap.New[string, *yaml.Node]()
+	ext.Set("x-high-gravity", utils.CreateStringNode("why not?"))
 
 	req := &RequestBody{
 		Description: "beer",
-		Extensions:  map[string]interface{}{"x-high-gravity": "why not?"},
+		Extensions:  ext,
 	}
 
 	rend, _ := req.Render()
@@ -79,5 +88,4 @@ func TestRequestBody_MarshalRequiredNil(t *testing.T) {
 x-high-gravity: why not?`
 
 	assert.Equal(t, desired, strings.TrimSpace(string(rend)))
-
 }

datamodel/high/v3/response.go

@@ -17,10 +17,10 @@ import (
 //   - https://spec.openapis.org/oas/v3.1.0#response-object
 type Response struct {
 	Description string                              `json:"description,omitempty" yaml:"description,omitempty"`
-	Headers     orderedmap.Map[string, *Header]    `json:"headers,omitempty" yaml:"headers,omitempty"`
+	Headers     *orderedmap.Map[string, *Header]    `json:"headers,omitempty" yaml:"headers,omitempty"`
-	Content     orderedmap.Map[string, *MediaType] `json:"content,omitempty" yaml:"content,omitempty"`
+	Content     *orderedmap.Map[string, *MediaType] `json:"content,omitempty" yaml:"content,omitempty"`
-	Links       orderedmap.Map[string, *Link]      `json:"links,omitempty" yaml:"links,omitempty"`
+	Links       *orderedmap.Map[string, *Link]      `json:"links,omitempty" yaml:"links,omitempty"`
-	Extensions  map[string]any                     `json:"-" yaml:"-"`
+	Extensions  *orderedmap.Map[string, *yaml.Node] `json:"-" yaml:"-"`
 	low         *low.Response
 }
 

datamodel/high/v3/response_test.go

@@ -21,7 +21,6 @@ import (
 // with hard coded line and column numbers in them, changing the spec above the bottom will
 // create pointless test changes. So here is a standalone test. you know... for science.
 func TestNewResponse(t *testing.T) {
-
 	yml := `description: this is a response
 headers:
   someHeader:
@@ -46,14 +45,16 @@ links:
 
 	assert.Equal(t, 1, orderedmap.Len(r.Headers))
 	assert.Equal(t, 1, orderedmap.Len(r.Content))
-	assert.Equal(t, "pizza!", r.Extensions["x-pizza-man"])
+
+	var xPizzaMan string
+	_ = r.Extensions.GetOrZero("x-pizza-man").Decode(&xPizzaMan)
+
+	assert.Equal(t, "pizza!", xPizzaMan)
 	assert.Equal(t, 1, orderedmap.Len(r.Links))
 	assert.Equal(t, 1, r.GoLow().Description.KeyNode.Line)
-
 }
 
 func TestResponse_MarshalYAML(t *testing.T) {
-
 	yml := `description: this is a response
 headers:
     someHeader:
@@ -77,11 +78,9 @@ links:
 
 	rend, _ := r.Render()
 	assert.Equal(t, yml, strings.TrimSpace(string(rend)))
-
 }
 
 func TestResponse_MarshalYAMLInline(t *testing.T) {
-
 	yml := `description: this is a response
 headers:
     someHeader:
@@ -105,5 +104,4 @@ links:
 
 	rend, _ := r.RenderInline()
 	assert.Equal(t, yml, strings.TrimSpace(string(rend)))
-
 }

datamodel/high/v3/responses.go

@@ -31,9 +31,9 @@ import (
 // be the response for a successful operation call.
 //   - https://spec.openapis.org/oas/v3.1.0#responses-object
 type Responses struct {
-	Codes      orderedmap.Map[string, *Response] `json:"-" yaml:"-"`
+	Codes      *orderedmap.Map[string, *Response]  `json:"-" yaml:"-"`
 	Default    *Response                           `json:"default,omitempty" yaml:"default,omitempty"`
-	Extensions map[string]any                    `json:"-" yaml:"-"`
+	Extensions *orderedmap.Map[string, *yaml.Node] `json:"-" yaml:"-"`
 	low        *low.Responses
 }
 
@@ -97,19 +97,22 @@ func (r *Responses) MarshalYAML() (interface{}, error) {
 		code  string
 		line  int
 		ext   *yaml.Node
+		style yaml.Style
 	}
 	var mapped []*responseItem
 
 	for pair := orderedmap.First(r.Codes); pair != nil; pair = pair.Next() {
 		ln := 9999 // default to a high value to weight new content to the bottom.
+		var style yaml.Style
 		if r.low != nil {
 			for lPair := orderedmap.First(r.low.Codes); lPair != nil; lPair = lPair.Next() {
 				if lPair.Key().Value == pair.Key() {
 					ln = lPair.Key().KeyNode.Line
+					style = lPair.Key().KeyNode.Style
 				}
 			}
 		}
-		mapped = append(mapped, &responseItem{pair.Value(), pair.Key(), ln, nil})
+		mapped = append(mapped, &responseItem{pair.Value(), pair.Key(), ln, nil, style})
 	}
 
 	// extract extensions
@@ -124,7 +127,7 @@ func (r *Responses) MarshalYAML() (interface{}, error) {
 			}
 			mapped = append(mapped, &responseItem{
 				nil, label,
-				extNode.Content[u].Line, extNode.Content[u],
+				extNode.Content[u].Line, extNode.Content[u], 0,
 			})
 		}
 	}
@@ -132,15 +135,19 @@ func (r *Responses) MarshalYAML() (interface{}, error) {
 	sort.Slice(mapped, func(i, j int) bool {
 		return mapped[i].line < mapped[j].line
 	})
-	for j := range mapped {
+	for _, mp := range mapped {
-		if mapped[j].resp != nil {
+		if mp.resp != nil {
-			rendered, _ := mapped[j].resp.MarshalYAML()
+			rendered, _ := mp.resp.MarshalYAML()
-			m.Content = append(m.Content, utils.CreateStringNode(mapped[j].code))
+
+			kn := utils.CreateStringNode(mp.code)
+			kn.Style = mp.style
+
+			m.Content = append(m.Content, kn)
 			m.Content = append(m.Content, rendered.(*yaml.Node))
 		}
-		if mapped[j].ext != nil {
+		if mp.ext != nil {
-			m.Content = append(m.Content, utils.CreateStringNode(mapped[j].code))
+			m.Content = append(m.Content, utils.CreateStringNode(mp.code))
-			m.Content = append(m.Content, mapped[j].ext)
+			m.Content = append(m.Content, mp.ext)
 		}
 
 	}
@@ -155,19 +162,22 @@ func (r *Responses) MarshalYAMLInline() (interface{}, error) {
 		code  string
 		line  int
 		ext   *yaml.Node
+		style yaml.Style
 	}
 	var mapped []*responseItem
 
 	for pair := orderedmap.First(r.Codes); pair != nil; pair = pair.Next() {
 		ln := 9999 // default to a high value to weight new content to the bottom.
+		var style yaml.Style
 		if r.low != nil {
 			for lPair := orderedmap.First(r.low.Codes); lPair != nil; lPair = lPair.Next() {
 				if lPair.Key().Value == pair.Key() {
 					ln = lPair.Key().KeyNode.Line
+					style = lPair.Key().KeyNode.Style
 				}
 			}
 		}
-		mapped = append(mapped, &responseItem{pair.Value(), pair.Key(), ln, nil})
+		mapped = append(mapped, &responseItem{pair.Value(), pair.Key(), ln, nil, style})
 	}
 
 	// extract extensions
@@ -183,7 +193,7 @@ func (r *Responses) MarshalYAMLInline() (interface{}, error) {
 			}
 			mapped = append(mapped, &responseItem{
 				nil, label,
-				extNode.Content[u].Line, extNode.Content[u],
+				extNode.Content[u].Line, extNode.Content[u], 0,
 			})
 		}
 	}
@@ -191,16 +201,20 @@ func (r *Responses) MarshalYAMLInline() (interface{}, error) {
 	sort.Slice(mapped, func(i, j int) bool {
 		return mapped[i].line < mapped[j].line
 	})
-	for j := range mapped {
+	for _, mp := range mapped {
-		if mapped[j].resp != nil {
+		if mp.resp != nil {
-			rendered, _ := mapped[j].resp.MarshalYAMLInline()
+			rendered, _ := mp.resp.MarshalYAMLInline()
-			m.Content = append(m.Content, utils.CreateStringNode(mapped[j].code))
+
+			kn := utils.CreateStringNode(mp.code)
+			kn.Style = mp.style
+
+			m.Content = append(m.Content, kn)
 			m.Content = append(m.Content, rendered.(*yaml.Node))
 
 		}
-		if mapped[j].ext != nil {
+		if mp.ext != nil {
-			m.Content = append(m.Content, utils.CreateStringNode(mapped[j].code))
+			m.Content = append(m.Content, utils.CreateStringNode(mp.code))
-			m.Content = append(m.Content, mapped[j].ext)
+			m.Content = append(m.Content, mp.ext)
 		}
 
 	}

datamodel/high/v3/security_scheme.go

@@ -6,6 +6,7 @@ package v3
 import (
 	"github.com/pb33f/libopenapi/datamodel/high"
 	low "github.com/pb33f/libopenapi/datamodel/low/v3"
+	"github.com/pb33f/libopenapi/orderedmap"
 	"gopkg.in/yaml.v3"
 )
 
@@ -28,7 +29,7 @@ type SecurityScheme struct {
 	BearerFormat     string                              `json:"bearerFormat,omitempty" yaml:"bearerFormat,omitempty"`
 	Flows            *OAuthFlows                         `json:"flows,omitempty" yaml:"flows,omitempty"`
 	OpenIdConnectUrl string                              `json:"openIdConnectUrl,omitempty" yaml:"openIdConnectUrl,omitempty"`
-	Extensions       map[string]any `json:"-" yaml:"-"`
+	Extensions       *orderedmap.Map[string, *yaml.Node] `json:"-" yaml:"-"`
 	low              *low.SecurityScheme
 }
 

datamodel/high/v3/server.go

@@ -15,8 +15,8 @@ import (
 type Server struct {
 	URL         string                                   `json:"url,omitempty" yaml:"url,omitempty"`
 	Description string                                   `json:"description,omitempty" yaml:"description,omitempty"`
-	Variables   orderedmap.Map[string, *ServerVariable] `json:"variables,omitempty" yaml:"variables,omitempty"`
+	Variables   *orderedmap.Map[string, *ServerVariable] `json:"variables,omitempty" yaml:"variables,omitempty"`
-	Extensions  map[string]any                          `json:"-" yaml:"-"`
+	Extensions  *orderedmap.Map[string, *yaml.Node]      `json:"-" yaml:"-"`
 	low         *low.Server
 }
 

datamodel/low/base/discriminator.go

@@ -22,13 +22,13 @@ import (
 //	v3 - https://spec.openapis.org/oas/v3.1.0#discriminator-object
 type Discriminator struct {
 	PropertyName low.NodeReference[string]
-	Mapping      low.NodeReference[orderedmap.Map[low.KeyReference[string], low.ValueReference[string]]]
+	Mapping      low.NodeReference[*orderedmap.Map[low.KeyReference[string], low.ValueReference[string]]]
 	low.Reference
 }
 
 // FindMappingValue will return a ValueReference containing the string mapping value
 func (d *Discriminator) FindMappingValue(key string) *low.ValueReference[string] {
-	for pair := d.Mapping.Value.First(); pair != nil; pair = pair.Next() {
+	for pair := orderedmap.First(d.Mapping.Value); pair != nil; pair = pair.Next() {
 		if pair.Key().Value == key {
 			v := pair.Value()
 			return &v
@@ -45,7 +45,7 @@ func (d *Discriminator) Hash() [32]byte {
 		f = append(f, d.PropertyName.Value)
 	}
 
-	for pair := orderedmap.First(d.Mapping.Value); pair != nil; pair = pair.Next() {
+	for pair := orderedmap.First(orderedmap.SortAlpha(d.Mapping.Value)); pair != nil; pair = pair.Next() {
 		f = append(f, pair.Value().Value)
 	}
 

datamodel/low/base/example.go

@@ -7,12 +7,11 @@ import (
 	"context"
 	"crypto/sha256"
 	"fmt"
-	"sort"
-	"strconv"
 	"strings"
 
 	"github.com/pb33f/libopenapi/datamodel/low"
 	"github.com/pb33f/libopenapi/index"
+	"github.com/pb33f/libopenapi/orderedmap"
 	"github.com/pb33f/libopenapi/utils"
 	"gopkg.in/yaml.v3"
 )
@@ -23,15 +22,15 @@ import (
 type Example struct {
 	Summary       low.NodeReference[string]
 	Description   low.NodeReference[string]
-	Value         low.NodeReference[any]
+	Value         low.NodeReference[*yaml.Node]
 	ExternalValue low.NodeReference[string]
-	Extensions    map[low.KeyReference[string]]low.ValueReference[any]
+	Extensions    *orderedmap.Map[low.KeyReference[string], low.ValueReference[*yaml.Node]]
 	*low.Reference
 }
 
 // FindExtension returns a ValueReference containing the extension value, if found.
-func (ex *Example) FindExtension(ext string) *low.ValueReference[any] {
+func (ex *Example) FindExtension(ext string) *low.ValueReference[*yaml.Node] {
-	return low.FindItemInMap[any](ext, ex.Extensions)
+	return low.FindItemInOrderedMap[*yaml.Node](ext, ex.Extensions)
 }
 
 // Hash will return a consistent SHA256 Hash of the Discriminator object
@@ -43,21 +42,15 @@ func (ex *Example) Hash() [32]byte {
 	if ex.Description.Value != "" {
 		f = append(f, ex.Description.Value)
 	}
-	if ex.Value.Value != "" {
+	if ex.Value.Value != nil && !ex.Value.Value.IsZero() {
 		// this could be anything!
-		f = append(f, fmt.Sprintf("%x", sha256.Sum256([]byte(fmt.Sprint(ex.Value.Value)))))
+		b, _ := yaml.Marshal(ex.Value.Value)
+		f = append(f, fmt.Sprintf("%x", sha256.Sum256(b)))
 	}
 	if ex.ExternalValue.Value != "" {
 		f = append(f, ex.ExternalValue.Value)
 	}
-	keys := make([]string, len(ex.Extensions))
+	f = append(f, low.HashExtensions(ex.Extensions)...)
-	z := 0
-	for k := range ex.Extensions {
-		keys[z] = fmt.Sprintf("%s-%x", k.Value, sha256.Sum256([]byte(fmt.Sprint(ex.Extensions[k].Value))))
-		z++
-	}
-	sort.Strings(keys)
-	f = append(f, keys...)
 	return sha256.Sum256([]byte(strings.Join(f, "|")))
 }
 
@@ -70,32 +63,8 @@ func (ex *Example) Build(_ context.Context, _, root *yaml.Node, _ *index.SpecInd
 	_, ln, vn := utils.FindKeyNodeFull(ValueLabel, root.Content)
 
 	if vn != nil {
-		var n map[string]interface{}
+		ex.Value = low.NodeReference[*yaml.Node]{
-		err := vn.Decode(&n)
+			Value:     vn,
-		if err != nil {
-			// if not a map, then try an array
-			var k []interface{}
-			err = vn.Decode(&k)
-			if err != nil {
-				// lets just default to interface
-				var j interface{}
-				_ = vn.Decode(&j)
-				ex.Value = low.NodeReference[any]{
-					Value:     j,
-					KeyNode:   ln,
-					ValueNode: vn,
-				}
-				return nil
-			}
-			ex.Value = low.NodeReference[any]{
-				Value:     k,
-				KeyNode:   ln,
-				ValueNode: vn,
-			}
-			return nil
-		}
-		ex.Value = low.NodeReference[any]{
-			Value:     n,
 			KeyNode:   ln,
 			ValueNode: vn,
 		}
@@ -105,33 +74,6 @@ func (ex *Example) Build(_ context.Context, _, root *yaml.Node, _ *index.SpecInd
 }
 
 // GetExtensions will return Example extensions to satisfy the HasExtensions interface.
-func (ex *Example) GetExtensions() map[low.KeyReference[string]]low.ValueReference[any] {
+func (ex *Example) GetExtensions() *orderedmap.Map[low.KeyReference[string], low.ValueReference[*yaml.Node]] {
 	return ex.Extensions
 }
-
-// ExtractExampleValue will extract a primitive example value (if possible), or just the raw Value property if not.
-func ExtractExampleValue(exp *yaml.Node) any {
-	if utils.IsNodeBoolValue(exp) {
-		v, _ := strconv.ParseBool(exp.Value)
-		return v
-	}
-	if utils.IsNodeIntValue(exp) {
-		v, _ := strconv.ParseInt(exp.Value, 10, 64)
-		return v
-	}
-	if utils.IsNodeFloatValue(exp) {
-		v, _ := strconv.ParseFloat(exp.Value, 64)
-		return v
-	}
-	if utils.IsNodeMap(exp) {
-		var m map[string]interface{}
-		_ = exp.Decode(&m)
-		return m
-	}
-	if utils.IsNodeArray(exp) {
-		var m []interface{}
-		_ = exp.Decode(&m)
-		return m
-	}
-	return exp.Value
-}

datamodel/low/base/example_test.go

@@ -5,15 +5,17 @@ package base
 
 import (
 	"context"
+	"testing"
+
 	"github.com/pb33f/libopenapi/datamodel/low"
 	"github.com/pb33f/libopenapi/index"
+	"github.com/pb33f/libopenapi/orderedmap"
 	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
 	"gopkg.in/yaml.v3"
-	"testing"
 )
 
 func TestExample_Build_Success_NoValue(t *testing.T) {
-
 	yml := `summary: hot
 description: cakes
 x-cake: hot`
@@ -32,13 +34,13 @@ x-cake: hot`
 	assert.Equal(t, "hot", n.Summary.Value)
 	assert.Equal(t, "cakes", n.Description.Value)
 	assert.Nil(t, n.Value.Value)
-	ext := n.FindExtension("x-cake")
+
-	assert.NotNil(t, ext)
+	var xCake string
-	assert.Equal(t, "hot", ext.Value)
+	_ = n.FindExtension("x-cake").Value.Decode(&xCake)
+	assert.Equal(t, "hot", xCake)
 }
 
 func TestExample_Build_Success_Simple(t *testing.T) {
-
 	yml := `summary: hot
 description: cakes
 value: a string example
@@ -57,14 +59,17 @@ x-cake: hot`
 	assert.NoError(t, err)
 	assert.Equal(t, "hot", n.Summary.Value)
 	assert.Equal(t, "cakes", n.Description.Value)
-	assert.Equal(t, "a string example", n.Value.Value)
+
-	ext := n.FindExtension("x-cake")
+	var example string
-	assert.NotNil(t, ext)
+	err = n.Value.Value.Decode(&example)
-	assert.Equal(t, "hot", ext.Value)
+	assert.Equal(t, "a string example", example)
+
+	var xCake string
+	_ = n.FindExtension("x-cake").Value.Decode(&xCake)
+	assert.Equal(t, "hot", xCake)
 }
 
 func TestExample_Build_Success_Object(t *testing.T) {
-
 	yml := `summary: hot
 description: cakes
 value:
@@ -85,17 +90,15 @@ value:
 	assert.Equal(t, "hot", n.Summary.Value)
 	assert.Equal(t, "cakes", n.Description.Value)
 
-	if v, ok := n.Value.Value.(map[string]interface{}); ok {
+	var m map[string]interface{}
-		assert.Equal(t, "oven", v["pizza"])
+	err = n.Value.Value.Decode(&m)
-		assert.Equal(t, "pizza", v["yummy"])
+	require.NoError(t, err)
-	} else {
-		assert.Fail(t, "failed to decode correctly.")
-	}
 
+	assert.Equal(t, "oven", m["pizza"])
+	assert.Equal(t, "pizza", m["yummy"])
 }
 
 func TestExample_Build_Success_Array(t *testing.T) {
-
 	yml := `summary: hot
 description: cakes
 value:
@@ -116,16 +119,15 @@ value:
 	assert.Equal(t, "hot", n.Summary.Value)
 	assert.Equal(t, "cakes", n.Description.Value)
 
-	if v, ok := n.Value.Value.([]interface{}); ok {
+	var a []any
-		assert.Equal(t, "wow", v[0])
+	err = n.Value.Value.Decode(&a)
-		assert.Equal(t, "such array", v[1])
+	require.NoError(t, err)
-	} else {
+
-		assert.Fail(t, "failed to decode correctly.")
+	assert.Equal(t, "wow", a[0])
-	}
+	assert.Equal(t, "such array", a[1])
 }
 
 func TestExample_Build_Success_MergeNode(t *testing.T) {
-
 	yml := `x-things: &things
   summary: hot
   description: cakes
@@ -148,71 +150,15 @@ func TestExample_Build_Success_MergeNode(t *testing.T) {
 	assert.Equal(t, "hot", n.Summary.Value)
 	assert.Equal(t, "cakes", n.Description.Value)
 
-	if v, ok := n.Value.Value.([]interface{}); ok {
+	var a []any
-		assert.Equal(t, "wow", v[0])
+	err = n.Value.GetValue().Decode(&a)
-		assert.Equal(t, "such array", v[1])
+	require.NoError(t, err)
-	} else {
-		assert.Fail(t, "failed to decode correctly.")
-	}
 
-}
+	assert.Equal(t, "wow", a[0])
-
+	assert.Equal(t, "such array", a[1])
-func TestExample_ExtractExampleValue_Map(t *testing.T) {
-
-	yml := `hot:
-    summer: nights
-    pizza: oven`
-
-	var idxNode yaml.Node
-	_ = yaml.Unmarshal([]byte(yml), &idxNode)
-
-	val := ExtractExampleValue(idxNode.Content[0])
-	if v, ok := val.(map[string]interface{}); ok {
-		if r, rok := v["hot"].(map[string]interface{}); rok {
-			assert.Equal(t, "nights", r["summer"])
-			assert.Equal(t, "oven", r["pizza"])
-		} else {
-			assert.Fail(t, "failed to decode correctly.")
-		}
-	} else {
-		assert.Fail(t, "failed to decode correctly.")
-	}
-}
-
-func TestExample_ExtractExampleValue_Slice(t *testing.T) {
-
-	yml := `- hot:
-    summer: nights
-- hotter:
-    pizza: oven`
-
-	var idxNode yaml.Node
-	_ = yaml.Unmarshal([]byte(yml), &idxNode)
-
-	val := ExtractExampleValue(idxNode.Content[0])
-	if v, ok := val.([]interface{}); ok {
-		for w := range v {
-			if r, rok := v[w].(map[string]interface{}); rok {
-				for k := range r {
-					if k == "hotter" {
-						assert.Equal(t, "oven", r[k].(map[string]interface{})["pizza"])
-					}
-					if k == "hot" {
-						assert.Equal(t, "nights", r[k].(map[string]interface{})["summer"])
-					}
-				}
-			} else {
-				assert.Fail(t, "failed to decode correctly.")
-			}
-		}
-
-	} else {
-		assert.Fail(t, "failed to decode correctly.")
-	}
 }
 
 func TestExample_Hash(t *testing.T) {
-
 	left := `summary: hot
 description: cakes
 x-burger: nice
@@ -242,13 +188,5 @@ x-burger: nice`
 	_ = rDoc.Build(context.Background(), nil, rNode.Content[0], nil)
 
 	assert.Equal(t, lDoc.Hash(), rDoc.Hash())
-	assert.Len(t, lDoc.GetExtensions(), 1)
+	assert.Equal(t, 1, orderedmap.Len(lDoc.GetExtensions()))
-}
-
-func TestExtractExampleValue(t *testing.T) {
-	assert.True(t, ExtractExampleValue(&yaml.Node{Tag: "!!bool", Value: "true"}).(bool))
-	assert.Equal(t, int64(10), ExtractExampleValue(&yaml.Node{Tag: "!!int", Value: "10"}).(int64))
-	assert.Equal(t, 33.2, ExtractExampleValue(&yaml.Node{Tag: "!!float", Value: "33.2"}).(float64))
-	assert.Equal(t, "WHAT A NICE COW", ExtractExampleValue(&yaml.Node{Tag: "!!str", Value: "WHAT A NICE COW"}))
-
 }

datamodel/low/base/external_doc.go

@@ -6,13 +6,13 @@ package base
 import (
 	"context"
 	"crypto/sha256"
-	"fmt"
+	"strings"
+
 	"github.com/pb33f/libopenapi/datamodel/low"
 	"github.com/pb33f/libopenapi/index"
+	"github.com/pb33f/libopenapi/orderedmap"
 	"github.com/pb33f/libopenapi/utils"
 	"gopkg.in/yaml.v3"
-	"sort"
-	"strings"
 )
 
 // ExternalDoc represents a low-level External Documentation object as defined by OpenAPI 2 and 3
@@ -24,13 +24,13 @@ import (
 type ExternalDoc struct {
 	Description low.NodeReference[string]
 	URL         low.NodeReference[string]
-	Extensions  map[low.KeyReference[string]]low.ValueReference[any]
+	Extensions  *orderedmap.Map[low.KeyReference[string], low.ValueReference[*yaml.Node]]
 	*low.Reference
 }
 
 // FindExtension returns a ValueReference containing the extension value, if found.
-func (ex *ExternalDoc) FindExtension(ext string) *low.ValueReference[any] {
+func (ex *ExternalDoc) FindExtension(ext string) *low.ValueReference[*yaml.Node] {
-	return low.FindItemInMap[any](ext, ex.Extensions)
+	return low.FindItemInOrderedMap[*yaml.Node](ext, ex.Extensions)
 }
 
 // Build will extract extensions from the ExternalDoc instance.
@@ -43,7 +43,7 @@ func (ex *ExternalDoc) Build(_ context.Context, _, root *yaml.Node, idx *index.S
 }
 
 // GetExtensions returns all ExternalDoc extensions and satisfies the low.HasExtensions interface.
-func (ex *ExternalDoc) GetExtensions() map[low.KeyReference[string]]low.ValueReference[any] {
+func (ex *ExternalDoc) GetExtensions() *orderedmap.Map[low.KeyReference[string], low.ValueReference[*yaml.Node]] {
 	return ex.Extensions
 }
 
@@ -53,13 +53,6 @@ func (ex *ExternalDoc) Hash() [32]byte {
 		ex.Description.Value,
 		ex.URL.Value,
 	}
-	keys := make([]string, len(ex.Extensions))
+	f = append(f, low.HashExtensions(ex.Extensions)...)
-	z := 0
-	for k := range ex.Extensions {
-		keys[z] = fmt.Sprintf("%s-%x", k.Value, sha256.Sum256([]byte(fmt.Sprint(ex.Extensions[k].Value))))
-		z++
-	}
-	sort.Strings(keys)
-	f = append(f, keys...)
 	return sha256.Sum256([]byte(strings.Join(f, "|")))
 }

datamodel/low/base/external_doc_test.go

@@ -5,15 +5,16 @@ package base
 
 import (
 	"context"
+	"testing"
+
 	"github.com/pb33f/libopenapi/datamodel/low"
 	"github.com/pb33f/libopenapi/index"
+	"github.com/pb33f/libopenapi/orderedmap"
 	"github.com/stretchr/testify/assert"
 	"gopkg.in/yaml.v3"
-	"testing"
 )
 
 func TestExternalDoc_FindExtension(t *testing.T) {
-
 	yml := `x-fish: cake`
 
 	var idxNode yaml.Node
@@ -26,12 +27,14 @@ func TestExternalDoc_FindExtension(t *testing.T) {
 
 	err = n.Build(context.Background(), nil, idxNode.Content[0], idx)
 	assert.NoError(t, err)
-	assert.Equal(t, "cake", n.FindExtension("x-fish").Value)
 
+	var xFish string
+	_ = n.FindExtension("x-fish").Value.Decode(&xFish)
+
+	assert.Equal(t, "cake", xFish)
 }
 
 func TestExternalDoc_Build(t *testing.T) {
-
 	yml := `url: https://pb33f.io
 description: the ranch
 x-b33f: princess`
@@ -49,14 +52,13 @@ x-b33f: princess`
 	assert.NoError(t, err)
 	assert.Equal(t, "https://pb33f.io", n.URL.Value)
 	assert.Equal(t, "the ranch", n.Description.Value)
-	ext := n.FindExtension("x-b33f")
-	assert.NotNil(t, ext)
-	assert.Equal(t, "princess", ext.Value)
 
+	var xB33f string
+	_ = n.FindExtension("x-b33f").Value.Decode(&xB33f)
+	assert.Equal(t, "princess", xB33f)
 }
 
 func TestExternalDoc_Hash(t *testing.T) {
-
 	left := `url: https://pb33f.io
 description: the ranch
 x-b33f: princess`
@@ -78,5 +80,5 @@ description: the ranch`
 	_ = rDoc.Build(context.Background(), nil, rNode.Content[0], nil)
 
 	assert.Equal(t, lDoc.Hash(), rDoc.Hash())
-	assert.Len(t, lDoc.GetExtensions(), 1)
+	assert.Equal(t, 1, orderedmap.Len(lDoc.GetExtensions()))
 }

datamodel/low/base/info.go

@@ -6,11 +6,11 @@ package base
 import (
 	"context"
 	"crypto/sha256"
-	"fmt"
-	"github.com/pb33f/libopenapi/utils"
-	"sort"
 	"strings"
 
+	"github.com/pb33f/libopenapi/orderedmap"
+	"github.com/pb33f/libopenapi/utils"
+
 	"github.com/pb33f/libopenapi/datamodel/low"
 	"github.com/pb33f/libopenapi/index"
 	"gopkg.in/yaml.v3"
@@ -31,17 +31,17 @@ type Info struct {
 	Contact        low.NodeReference[*Contact]
 	License        low.NodeReference[*License]
 	Version        low.NodeReference[string]
-	Extensions     map[low.KeyReference[string]]low.ValueReference[any]
+	Extensions     *orderedmap.Map[low.KeyReference[string], low.ValueReference[*yaml.Node]]
 	*low.Reference
 }
 
 // FindExtension attempts to locate an extension with the supplied key
-func (i *Info) FindExtension(ext string) *low.ValueReference[any] {
+func (i *Info) FindExtension(ext string) *low.ValueReference[*yaml.Node] {
-	return low.FindItemInMap(ext, i.Extensions)
+	return low.FindItemInOrderedMap(ext, i.Extensions)
 }
 
 // GetExtensions returns all extensions for Info
-func (i *Info) GetExtensions() map[low.KeyReference[string]]low.ValueReference[any] {
+func (i *Info) GetExtensions() *orderedmap.Map[low.KeyReference[string], low.ValueReference[*yaml.Node]] {
 	return i.Extensions
 }
 
@@ -87,13 +87,6 @@ func (i *Info) Hash() [32]byte {
 	if !i.Version.IsEmpty() {
 		f = append(f, i.Version.Value)
 	}
-	keys := make([]string, len(i.Extensions))
+	f = append(f, low.HashExtensions(i.Extensions)...)
-	z := 0
-	for k := range i.Extensions {
-		keys[z] = fmt.Sprintf("%s-%x", k.Value, sha256.Sum256([]byte(fmt.Sprint(i.Extensions[k].Value))))
-		z++
-	}
-	sort.Strings(keys)
-	f = append(f, keys...)
 	return sha256.Sum256([]byte(strings.Join(f, "|")))
 }

datamodel/low/base/info_test.go

@@ -9,6 +9,7 @@ import (
 
 	"github.com/pb33f/libopenapi/datamodel/low"
 	"github.com/pb33f/libopenapi/index"
+	"github.com/pb33f/libopenapi/orderedmap"
 	"github.com/stretchr/testify/assert"
 	"gopkg.in/yaml.v3"
 )
@@ -54,10 +55,11 @@ x-cli-name: pizza cli`
 	assert.Equal(t, "magic", lic.Name.Value)
 	assert.Equal(t, "https://pb33f.io/license", lic.URL.Value)
 
-	cliName := n.FindExtension("x-cli-name")
+	var xCliName string
-	assert.NotNil(t, cliName)
+	_ = n.FindExtension("x-cli-name").Value.Decode(&xCliName)
-	assert.Equal(t, "pizza cli", cliName.Value)
+
-	assert.Len(t, n.GetExtensions(), 1)
+	assert.Equal(t, "pizza cli", xCliName)
+	assert.Equal(t, 1, orderedmap.Len(n.GetExtensions()))
 }
 
 func TestContact_Build(t *testing.T) {

datamodel/low/base/schema.go

@@ -82,7 +82,7 @@ type Schema struct {
 	Discriminator low.NodeReference[*Discriminator]
 
 	// in 3.1 examples can be an array (which is recommended)
-	Examples low.NodeReference[[]low.ValueReference[any]]
+	Examples low.NodeReference[[]low.ValueReference[*yaml.Node]]
 	// in 3.1 PrefixItems provides tuple validation using prefixItems.
 	PrefixItems low.NodeReference[[]low.ValueReference[*SchemaProxy]]
 	// in 3.1 Contains is used by arrays and points to a Schema.
@@ -97,8 +97,8 @@ type Schema struct {
 	If                    low.NodeReference[*SchemaProxy]
 	Else                  low.NodeReference[*SchemaProxy]
 	Then                  low.NodeReference[*SchemaProxy]
-	DependentSchemas      low.NodeReference[orderedmap.Map[low.KeyReference[string], low.ValueReference[*SchemaProxy]]]
+	DependentSchemas      low.NodeReference[*orderedmap.Map[low.KeyReference[string], low.ValueReference[*SchemaProxy]]]
-	PatternProperties     low.NodeReference[orderedmap.Map[low.KeyReference[string], low.ValueReference[*SchemaProxy]]]
+	PatternProperties     low.NodeReference[*orderedmap.Map[low.KeyReference[string], low.ValueReference[*SchemaProxy]]]
 	PropertyNames         low.NodeReference[*SchemaProxy]
 	UnevaluatedItems      low.NodeReference[*SchemaProxy]
 	UnevaluatedProperties low.NodeReference[*SchemaDynamicValue[*SchemaProxy, bool]]
@@ -119,23 +119,23 @@ type Schema struct {
 	MaxProperties        low.NodeReference[int64]
 	MinProperties        low.NodeReference[int64]
 	Required             low.NodeReference[[]low.ValueReference[string]]
-	Enum                 low.NodeReference[[]low.ValueReference[any]]
+	Enum                 low.NodeReference[[]low.ValueReference[*yaml.Node]]
 	Not                  low.NodeReference[*SchemaProxy]
-	Properties           low.NodeReference[orderedmap.Map[low.KeyReference[string], low.ValueReference[*SchemaProxy]]]
+	Properties           low.NodeReference[*orderedmap.Map[low.KeyReference[string], low.ValueReference[*SchemaProxy]]]
 	AdditionalProperties low.NodeReference[*SchemaDynamicValue[*SchemaProxy, bool]]
 	Description          low.NodeReference[string]
 	ContentEncoding      low.NodeReference[string]
 	ContentMediaType     low.NodeReference[string]
-	Default              low.NodeReference[any]
+	Default              low.NodeReference[*yaml.Node]
-	Const                low.NodeReference[any]
+	Const                low.NodeReference[*yaml.Node]
 	Nullable             low.NodeReference[bool]
 	ReadOnly             low.NodeReference[bool]
 	WriteOnly            low.NodeReference[bool]
 	XML                  low.NodeReference[*XML]
 	ExternalDocs         low.NodeReference[*ExternalDoc]
-	Example              low.NodeReference[any]
+	Example              low.NodeReference[*yaml.Node]
 	Deprecated           low.NodeReference[bool]
-	Extensions           map[low.KeyReference[string]]low.ValueReference[any]
+	Extensions           *orderedmap.Map[low.KeyReference[string], low.ValueReference[*yaml.Node]]
 
 	// Parent Proxy refers back to the low level SchemaProxy that is proxying this schema.
 	ParentProxy *SchemaProxy
@@ -255,23 +255,13 @@ func (s *Schema) Hash() [32]byte {
 
 	keys = make([]string, len(s.Enum.Value))
 	for i := range s.Enum.Value {
-		keys[i] = fmt.Sprint(s.Enum.Value[i].Value)
+		keys[i] = low.ValueToString(s.Enum.Value[i].Value)
 	}
 	sort.Strings(keys)
 	d = append(d, keys...)
 
-	for i := range s.Enum.Value {
+	for pair := orderedmap.First(orderedmap.SortAlpha(s.Properties.Value)); pair != nil; pair = pair.Next() {
-		d = append(d, fmt.Sprint(s.Enum.Value[i].Value))
+		d = append(d, fmt.Sprintf("%s-%s", pair.Key().Value, low.GenerateHashString(pair.Value().Value)))
-	}
-	propKeys := make([]string, orderedmap.Len(s.Properties.Value))
-	z := 0
-	for pair := orderedmap.First(s.Properties.Value); pair != nil; pair = pair.Next() {
-		propKeys[z] = pair.Key().Value
-		z++
-	}
-	sort.Strings(propKeys)
-	for k := range propKeys {
-		d = append(d, low.GenerateHashString(s.FindProperty(propKeys[k]).Value))
 	}
 	if s.XML.Value != nil {
 		d = append(d, low.GenerateHashString(s.XML.Value))
@@ -287,7 +277,7 @@ func (s *Schema) Hash() [32]byte {
 	if len(s.OneOf.Value) > 0 {
 		oneOfKeys := make([]string, len(s.OneOf.Value))
 		oneOfEntities := make(map[string]*SchemaProxy)
-		z = 0
+		z := 0
 		for i := range s.OneOf.Value {
 			g := s.OneOf.Value[i].Value
 			r := low.GenerateHashString(g)
@@ -305,7 +295,7 @@ func (s *Schema) Hash() [32]byte {
 	if len(s.AllOf.Value) > 0 {
 		allOfKeys := make([]string, len(s.AllOf.Value))
 		allOfEntities := make(map[string]*SchemaProxy)
-		z = 0
+		z := 0
 		for i := range s.AllOf.Value {
 			g := s.AllOf.Value[i].Value
 			r := low.GenerateHashString(g)
@@ -323,7 +313,7 @@ func (s *Schema) Hash() [32]byte {
 	if len(s.AnyOf.Value) > 0 {
 		anyOfKeys := make([]string, len(s.AnyOf.Value))
 		anyOfEntities := make(map[string]*SchemaProxy)
-		z = 0
+		z := 0
 		for i := range s.AnyOf.Value {
 			g := s.AnyOf.Value[i].Value
 			r := low.GenerateHashString(g)
@@ -372,32 +362,18 @@ func (s *Schema) Hash() [32]byte {
 		d = append(d, fmt.Sprint(s.Anchor.Value))
 	}
 
-	depSchemasKeys := make([]string, orderedmap.Len(s.DependentSchemas.Value))
+	for pair := orderedmap.First(orderedmap.SortAlpha(s.DependentSchemas.Value)); pair != nil; pair = pair.Next() {
-	z = 0
+		d = append(d, fmt.Sprintf("%s-%s", pair.Key().Value, low.GenerateHashString(pair.Value().Value)))
-	for pair := orderedmap.First(s.DependentSchemas.Value); pair != nil; pair = pair.Next() {
-		depSchemasKeys[z] = pair.Key().Value
-		z++
-	}
-	sort.Strings(depSchemasKeys)
-	for k := range depSchemasKeys {
-		d = append(d, low.GenerateHashString(s.FindDependentSchema(depSchemasKeys[k]).Value))
 	}
 
-	patternPropsKeys := make([]string, orderedmap.Len(s.PatternProperties.Value))
+	for pair := orderedmap.First(orderedmap.SortAlpha(s.PatternProperties.Value)); pair != nil; pair = pair.Next() {
-	z = 0
+		d = append(d, fmt.Sprintf("%s-%s", pair.Key().Value, low.GenerateHashString(pair.Value().Value)))
-	for pair := orderedmap.First(s.PatternProperties.Value); pair != nil; pair = pair.Next() {
-		patternPropsKeys[z] = pair.Key().Value
-		z++
-	}
-	sort.Strings(patternPropsKeys)
-	for k := range patternPropsKeys {
-		d = append(d, low.GenerateHashString(s.FindPatternProperty(patternPropsKeys[k]).Value))
 	}
 
 	if len(s.PrefixItems.Value) > 0 {
 		itemsKeys := make([]string, len(s.PrefixItems.Value))
 		itemsEntities := make(map[string]*SchemaProxy)
-		z = 0
+		z := 0
 		for i := range s.PrefixItems.Value {
 			g := s.PrefixItems.Value[i].Value
 			r := low.GenerateHashString(g)
@@ -411,15 +387,7 @@ func (s *Schema) Hash() [32]byte {
 		}
 	}
 
-	// add extensions to hash
+	d = append(d, low.HashExtensions(s.Extensions)...)
-	keys = make([]string, len(s.Extensions))
-	z = 0
-	for k := range s.Extensions {
-		keys[z] = fmt.Sprintf("%s-%x", k.Value, sha256.Sum256([]byte(fmt.Sprint(s.Extensions[k].Value))))
-		z++
-	}
-	sort.Strings(keys)
-	d = append(d, keys...)
 	if s.Example.Value != nil {
 		d = append(d, low.GenerateHashString(s.Example.Value))
 	}
@@ -435,12 +403,9 @@ func (s *Schema) Hash() [32]byte {
 		d = append(d, fmt.Sprint(s.MaxContains.Value))
 	}
 	if !s.Examples.IsEmpty() {
-		var xph []string
+		for _, ex := range s.Examples.Value {
-		for w := range s.Examples.Value {
+			d = append(d, low.GenerateHashString(ex.Value))
-			xph = append(xph, low.GenerateHashString(s.Examples.Value[w].Value))
 		}
-		sort.Strings(xph)
-		d = append(d, strings.Join(xph, "|"))
 	}
 	return sha256.Sum256([]byte(strings.Join(d, "|")))
 }
@@ -464,7 +429,7 @@ func (s *Schema) FindPatternProperty(name string) *low.ValueReference[*SchemaPro
 }
 
 // GetExtensions returns all extensions for Schema
-func (s *Schema) GetExtensions() map[low.KeyReference[string]]low.ValueReference[any] {
+func (s *Schema) GetExtensions() *orderedmap.Map[low.KeyReference[string], low.ValueReference[*yaml.Node]] {
 	return s.Extensions
 }
 
@@ -649,20 +614,20 @@ func (s *Schema) Build(ctx context.Context, root *yaml.Node, idx *index.SpecInde
 	}
 
 	// handle example if set. (3.0)
-	_, expLabel, expNode := utils.FindKeyNodeFull(ExampleLabel, root.Content)
+	_, expLabel, expNode := utils.FindKeyNodeFullTop(ExampleLabel, root.Content)
 	if expNode != nil {
-		s.Example = low.NodeReference[any]{Value: ExtractExampleValue(expNode), KeyNode: expLabel, ValueNode: expNode}
+		s.Example = low.NodeReference[*yaml.Node]{Value: expNode, KeyNode: expLabel, ValueNode: expNode}
 	}
 
 	// handle examples if set.(3.1)
 	_, expArrLabel, expArrNode := utils.FindKeyNodeFullTop(ExamplesLabel, root.Content)
 	if expArrNode != nil {
 		if utils.IsNodeArray(expArrNode) {
-			var examples []low.ValueReference[any]
+			var examples []low.ValueReference[*yaml.Node]
 			for i := range expArrNode.Content {
-				examples = append(examples, low.ValueReference[any]{Value: ExtractExampleValue(expArrNode.Content[i]), ValueNode: expArrNode.Content[i]})
+				examples = append(examples, low.ValueReference[*yaml.Node]{Value: expArrNode.Content[i], ValueNode: expArrNode.Content[i]})
 			}
-			s.Examples = low.NodeReference[[]low.ValueReference[any]]{
+			s.Examples = low.NodeReference[[]low.ValueReference[*yaml.Node]]{
 				Value:     examples,
 				ValueNode: expArrNode,
 				KeyNode:   expArrLabel,
@@ -1035,7 +1000,7 @@ func (s *Schema) Build(ctx context.Context, root *yaml.Node, idx *index.SpecInde
 	return nil
 }
 
-func buildPropertyMap(ctx context.Context, root *yaml.Node, idx *index.SpecIndex, label string) (*low.NodeReference[orderedmap.Map[low.KeyReference[string], low.ValueReference[*SchemaProxy]]], error) {
+func buildPropertyMap(ctx context.Context, root *yaml.Node, idx *index.SpecIndex, label string) (*low.NodeReference[*orderedmap.Map[low.KeyReference[string], low.ValueReference[*SchemaProxy]]], error) {
 	_, propLabel, propsNode := utils.FindKeyNodeFullTop(label, root.Content)
 	if propsNode != nil {
 		propertyMap := orderedmap.New[low.KeyReference[string], low.ValueReference[*SchemaProxy]]()
@@ -1047,12 +1012,12 @@ func buildPropertyMap(ctx context.Context, root *yaml.Node, idx *index.SpecIndex
 			}
 
 			// check our prop isn't reference
-			isRef := false
 			refString := ""
+			var refNode *yaml.Node
 			if h, _, l := utils.IsNodeRefValue(prop); h {
 				ref, _, _, _ := low.LocateRefNodeWithContext(ctx, prop, idx)
 				if ref != nil {
-					isRef = true
+					refNode = prop
 					prop = ref
 					refString = l
 				} else {
@@ -1061,16 +1026,19 @@ func buildPropertyMap(ctx context.Context, root *yaml.Node, idx *index.SpecIndex
 				}
 			}
 
+			sp := &SchemaProxy{ctx: ctx, kn: currentProp, vn: prop, idx: idx}
+			sp.SetReference(refString, refNode)
+
 			propertyMap.Set(low.KeyReference[string]{
 				KeyNode: currentProp,
 				Value:   currentProp.Value,
 			}, low.ValueReference[*SchemaProxy]{
-				Value:     &SchemaProxy{ctx: ctx, kn: currentProp, vn: prop, idx: idx, isReference: isRef, referenceLookup: refString},
+				Value:     sp,
 				ValueNode: prop,
 			})
 		}
 
-		return &low.NodeReference[orderedmap.Map[low.KeyReference[string], low.ValueReference[*SchemaProxy]]]{
+		return &low.NodeReference[*orderedmap.Map[low.KeyReference[string], low.ValueReference[*SchemaProxy]]]{
 			Value:     propertyMap,
 			KeyNode:   propLabel,
 			ValueNode: propsNode,
@@ -1112,7 +1080,7 @@ func buildSchema(ctx context.Context, schemas chan schemaProxyBuildResult, label
 		syncChan := make(chan buildResult)
 
 		// build out a SchemaProxy for every sub-schema.
-		build := func(pctx context.Context, kn *yaml.Node, vn *yaml.Node, schemaIdx int, c chan buildResult,
+		build := func(pctx context.Context, kn, vn *yaml.Node, rf *yaml.Node, schemaIdx int, c chan buildResult,
 			isRef bool, refLocation string,
 		) {
 			// a proxy design works best here. polymorphism, pretty much guarantees that a sub-schema can
@@ -1127,8 +1095,7 @@ func buildSchema(ctx context.Context, schemas chan schemaProxyBuildResult, label
 			sp.idx = idx
 			sp.ctx = pctx
 			if isRef {
-				sp.referenceLookup = refLocation
+				sp.SetReference(refLocation, rf)
-				sp.isReference = true
 			}
 			res := &low.ValueReference[*SchemaProxy]{
 				Value:     sp,
@@ -1142,6 +1109,7 @@ func buildSchema(ctx context.Context, schemas chan schemaProxyBuildResult, label
 
 		isRef := false
 		refLocation := ""
+		var refNode *yaml.Node
 		foundCtx := ctx
 		if utils.IsNodeMap(valueNode) {
 			h := false
@@ -1149,6 +1117,7 @@ func buildSchema(ctx context.Context, schemas chan schemaProxyBuildResult, label
 				isRef = true
 				ref, _, _, fctx := low.LocateRefNodeWithContext(ctx, valueNode, idx)
 				if ref != nil {
+					refNode = valueNode
 					valueNode = ref
 					foundCtx = fctx
 				} else {
@@ -1159,7 +1128,7 @@ func buildSchema(ctx context.Context, schemas chan schemaProxyBuildResult, label
 
 			// this only runs once, however to keep things consistent, it makes sense to use the same async method
 			// that arrays will use.
-			go build(foundCtx, labelNode, valueNode, -1, syncChan, isRef, refLocation)
+			go build(foundCtx, labelNode, valueNode, refNode, -1, syncChan, isRef, refLocation)
 			select {
 			case r := <-syncChan:
 				schemas <- schemaProxyBuildResult{
@@ -1181,6 +1150,7 @@ func buildSchema(ctx context.Context, schemas chan schemaProxyBuildResult, label
 					isRef = true
 					ref, _, _, fctx := low.LocateRefNodeWithContext(ctx, vn, idx)
 					if ref != nil {
+						refNode = vn
 						vn = ref
 						foundCtx = fctx
 					} else {
@@ -1191,7 +1161,7 @@ func buildSchema(ctx context.Context, schemas chan schemaProxyBuildResult, label
 					}
 				}
 				refBuilds++
-				go build(foundCtx, vn, vn, i, syncChan, isRef, refLocation)
+				go build(foundCtx, vn, vn, refNode, i, syncChan, isRef, refLocation)
 			}
 
 			completedBuilds := 0
@@ -1225,12 +1195,11 @@ func ExtractSchema(ctx context.Context, root *yaml.Node, idx *index.SpecIndex) (
 	var schLabel, schNode *yaml.Node
 	errStr := "schema build failed: reference '%s' cannot be found at line %d, col %d"
 
-	isRef := false
 	refLocation := ""
+	var refNode *yaml.Node
 
 	if rf, rl, _ := utils.IsNodeRefValue(root); rf {
 		// locate reference in index.
-		isRef = true
 		ref, fIdx, _, nCtx := low.LocateRefNodeWithContext(ctx, root, idx)
 		if ref != nil {
 			schNode = ref
@@ -1250,9 +1219,9 @@ func ExtractSchema(ctx context.Context, root *yaml.Node, idx *index.SpecIndex) (
 		if schNode != nil {
 			h := false
 			if h, _, refLocation = utils.IsNodeRefValue(schNode); h {
-				isRef = true
 				ref, foundIdx, _, nCtx := low.LocateRefNodeWithContext(ctx, schNode, idx)
 				if ref != nil {
+					refNode = schNode
 					schNode = ref
 					if foundIdx != nil {
 						// TODO: check on this
@@ -1273,11 +1242,16 @@ func ExtractSchema(ctx context.Context, root *yaml.Node, idx *index.SpecIndex) (
 
 	if schNode != nil {
 		// check if schema has already been built.
-		schema := &SchemaProxy{kn: schLabel, vn: schNode, idx: idx, ctx: ctx, isReference: isRef, referenceLookup: refLocation}
+		schema := &SchemaProxy{kn: schLabel, vn: schNode, idx: idx, ctx: ctx}
-		return &low.NodeReference[*SchemaProxy]{
+		schema.SetReference(refLocation, refNode)
-			Value: schema, KeyNode: schLabel, ValueNode: schNode, ReferenceNode: isRef,
+
-			Reference: refLocation,
+		n := &low.NodeReference[*SchemaProxy]{
-		}, nil
+			Value:     schema,
+			KeyNode:   schLabel,
+			ValueNode: schNode,
+		}
+		n.SetReference(refLocation, refNode)
+		return n, nil
 	}
 	return nil, nil
 }

datamodel/low/base/schema_proxy.go

@@ -6,6 +6,8 @@ package base
 import (
 	"context"
 	"crypto/sha256"
+
+	"github.com/pb33f/libopenapi/datamodel/low"
 	"github.com/pb33f/libopenapi/index"
 	"github.com/pb33f/libopenapi/utils"
 	"gopkg.in/yaml.v3"
@@ -44,13 +46,12 @@ import (
 // it's not actually JSONSchema until 3.1, so lots of times a bad schema will break parsing. Errors are only found
 // when a schema is needed, so the rest of the document is parsed and ready to use.
 type SchemaProxy struct {
+	low.Reference
 	kn         *yaml.Node
 	vn         *yaml.Node
 	idx        *index.SpecIndex
 	rendered   *Schema
 	buildError error
-	isReference     bool   // Is the schema underneath originally a $ref?
-	referenceLookup string // If the schema is a $ref, what's its name?
 	ctx        context.Context
 }
 
@@ -62,8 +63,7 @@ func (sp *SchemaProxy) Build(ctx context.Context, key, value *yaml.Node, idx *in
 	sp.idx = idx
 	sp.ctx = ctx
 	if rf, _, r := utils.IsNodeRefValue(value); rf {
-		sp.isReference = true
+		sp.SetReference(r, value)
-		sp.referenceLookup = r
 	}
 	return nil
 }
@@ -101,36 +101,6 @@ func (sp *SchemaProxy) GetBuildError() error {
 	return sp.buildError
 }
 
-// IsSchemaReference returns true if the Schema that this SchemaProxy represents, is actually a reference to
-// a Schema contained within Components or Definitions. There is no difference in the mechanism used to resolve the
-// Schema when calling Schema(), however if we want to know if this schema was originally a reference, we won't
-// be able to determine that from the model, without this bit.
-func (sp *SchemaProxy) IsSchemaReference() bool {
-	return sp.isReference
-}
-
-// IsReference is an alias for IsSchemaReference() except it's compatible wih the IsReferenced interface type.
-func (sp *SchemaProxy) IsReference() bool {
-	return sp.IsSchemaReference()
-}
-
-// GetReference is an alias for GetSchemaReference() except it's compatible wih the IsReferenced interface type.
-func (sp *SchemaProxy) GetReference() string {
-	return sp.GetSchemaReference()
-}
-
-// SetReference will set the reference lookup for this SchemaProxy.
-func (sp *SchemaProxy) SetReference(ref string) {
-	sp.referenceLookup = ref
-}
-
-// GetSchemaReference will return the lookup defined by the $ref that this schema points to. If the schema
-// is inline, and not a reference, then this method returns an empty string. Only useful when combined with
-// IsSchemaReference()
-func (sp *SchemaProxy) GetSchemaReference() string {
-	return sp.referenceLookup
-}
-
 func (sp *SchemaProxy) GetSchemaReferenceLocation() *index.NodeOrigin {
 	if sp.idx != nil {
 		origin := sp.idx.FindNodeOrigin(sp.vn)
@@ -158,11 +128,11 @@ func (sp *SchemaProxy) GetValueNode() *yaml.Node {
 // Hash will return a consistent SHA256 Hash of the SchemaProxy object (it will resolve it)
 func (sp *SchemaProxy) Hash() [32]byte {
 	if sp.rendered != nil {
-		if !sp.isReference {
+		if !sp.IsReference() {
 			return sp.rendered.Hash()
 		}
 	} else {
-		if !sp.isReference {
+		if !sp.IsReference() {
 			// only resolve this proxy if it's not a ref.
 			sch := sp.Schema()
 			sp.rendered = sch
@@ -170,5 +140,5 @@ func (sp *SchemaProxy) Hash() [32]byte {
 		}
 	}
 	// hash reference value only, do not resolve!
-	return sha256.Sum256([]byte(sp.referenceLookup))
+	return sha256.Sum256([]byte(sp.GetReference()))
 }

datamodel/low/base/schema_proxy_test.go

@@ -5,15 +5,16 @@ package base
 
 import (
 	"context"
+	"testing"
+
 	"github.com/pb33f/libopenapi/datamodel/low"
 	"github.com/pb33f/libopenapi/index"
+	"github.com/pb33f/libopenapi/orderedmap"
 	"github.com/stretchr/testify/assert"
 	"gopkg.in/yaml.v3"
-	"testing"
 )
 
 func TestSchemaProxy_Build(t *testing.T) {
-
 	yml := `x-windows: washed
 description: something`
 
@@ -24,29 +25,25 @@ description: something`
 	err := sch.Build(context.Background(), &idxNode, idxNode.Content[0], nil)
 	assert.NoError(t, err)
 
-	assert.Equal(t, "db2a35dd6fb3d9481d0682571b9d687616bb2a34c1887f7863f0b2e769ca7b23",
+	assert.Equal(t, "e20c009d370944d177c0b46e8fa29e15fadc3a6f9cca6bb251ff9e120265fc96",
 		low.GenerateHashString(&sch))
 
-	assert.Equal(t, "something", sch.Schema().Description.Value)
+	assert.Equal(t, "something", sch.Schema().Description.GetValue())
-	assert.Empty(t, sch.GetSchemaReference())
+	assert.Empty(t, sch.GetReference())
 	assert.NotNil(t, sch.GetKeyNode())
 	assert.NotNil(t, sch.GetValueNode())
-	assert.False(t, sch.IsSchemaReference())
 	assert.False(t, sch.IsReference())
-	assert.Empty(t, sch.GetReference())
+	sch.SetReference("coffee", nil)
-	sch.SetReference("coffee")
 	assert.Equal(t, "coffee", sch.GetReference())
 
 	// already rendered, should spit out the same
-	assert.Equal(t, "db2a35dd6fb3d9481d0682571b9d687616bb2a34c1887f7863f0b2e769ca7b23",
+	assert.Equal(t, "37290d74ac4d186e3a8e5785d259d2ec04fac91ae28092e7620ec8bc99e830aa",
 		low.GenerateHashString(&sch))
 
-	assert.Len(t, sch.Schema().GetExtensions(), 1)
+	assert.Equal(t, 1, orderedmap.Len(sch.Schema().GetExtensions()))
-
 }
 
 func TestSchemaProxy_Build_CheckRef(t *testing.T) {
-
 	yml := `$ref: wat`
 
 	var sch SchemaProxy
@@ -55,14 +52,13 @@ func TestSchemaProxy_Build_CheckRef(t *testing.T) {
 
 	err := sch.Build(context.Background(), nil, idxNode.Content[0], nil)
 	assert.NoError(t, err)
-	assert.True(t, sch.IsSchemaReference())
+	assert.True(t, sch.IsReference())
-	assert.Equal(t, "wat", sch.GetSchemaReference())
+	assert.Equal(t, "wat", sch.GetReference())
 	assert.Equal(t, "f00a787f7492a95e165b470702f4fe9373583fbdc025b2c8bdf0262cc48fcff4",
 		low.GenerateHashString(&sch))
 }
 
 func TestSchemaProxy_Build_HashInline(t *testing.T) {
-
 	yml := `type: int`
 
 	var sch SchemaProxy
@@ -71,14 +67,13 @@ func TestSchemaProxy_Build_HashInline(t *testing.T) {
 
 	err := sch.Build(context.Background(), nil, idxNode.Content[0], nil)
 	assert.NoError(t, err)
-	assert.False(t, sch.IsSchemaReference())
+	assert.False(t, sch.IsReference())
 	assert.NotNil(t, sch.Schema())
 	assert.Equal(t, "6da88c34ba124c41f977db66a4fc5c1a951708d285c81bb0d47c3206f4c27ca8",
 		low.GenerateHashString(&sch))
 }
 
 func TestSchemaProxy_Build_UsingMergeNodes(t *testing.T) {
-
 	yml := `
 x-common-definitions:
   life_cycle_types: &life_cycle_types_def
@@ -95,11 +90,9 @@ x-common-definitions:
 	assert.NoError(t, err)
 	assert.Len(t, sch.Schema().Enum.Value, 3)
 	assert.Equal(t, "The type of life cycle", sch.Schema().Description.Value)
-
 }
 
 func TestSchemaProxy_GetSchemaReferenceLocation(t *testing.T) {
-
 	yml := `type: object
 properties:
   name:
@@ -159,5 +152,4 @@ properties:
 	err = schC.Build(context.Background(), nil, idxNodeA.Content[0], nil)
 	origin = schC.GetSchemaReferenceLocation()
 	assert.Nil(t, origin)
-
 }

datamodel/low/base/schema_test.go

@@ -2,6 +2,8 @@ package base
 
 import (
 	"context"
+	"testing"
+
 	"github.com/pb33f/libopenapi/datamodel"
 	"github.com/pb33f/libopenapi/datamodel/low"
 	"github.com/pb33f/libopenapi/index"
@@ -9,7 +11,6 @@ import (
 	"github.com/pb33f/libopenapi/utils"
 	"github.com/stretchr/testify/assert"
 	"gopkg.in/yaml.v3"
-	"testing"
 )
 
 func test_get_schema_blob() string {
@@ -192,8 +193,8 @@ func Test_Schema(t *testing.T) {
 	assert.Equal(t, "an xml namespace", j.XML.Value.Namespace.Value)
 	assert.Equal(t, "a prefix", j.XML.Value.Prefix.Value)
 	assert.Equal(t, true, j.XML.Value.Attribute.Value)
-	assert.Len(t, j.XML.Value.Extensions, 1)
+	assert.Equal(t, 1, orderedmap.Len(j.XML.Value.Extensions))
-	assert.Len(t, j.XML.Value.GetExtensions(), 1)
+	assert.Equal(t, 1, orderedmap.Len(j.XML.Value.GetExtensions()))
 
 	assert.NotNil(t, v.Value.Schema().AdditionalProperties.Value)
 
@@ -213,12 +214,20 @@ func Test_Schema(t *testing.T) {
 	io := v.Value.Schema()
 
 	assert.Equal(t, "allOfA description", io.Description.Value)
-	assert.Equal(t, "allOfAExp", io.Example.Value)
+
+	var ioExample string
+	_ = io.Example.GetValueNode().Decode(&ioExample)
+
+	assert.Equal(t, "allOfAExp", ioExample)
 
 	qw := f.FindProperty("allOfB").Value.Schema()
 	assert.NotNil(t, v)
 	assert.Equal(t, "allOfB description", qw.Description.Value)
-	assert.Equal(t, "allOfBExp", qw.Example.Value)
+
+	var qwExample string
+	_ = qw.Example.GetValueNode().Decode(&qwExample)
+
+	assert.Equal(t, "allOfBExp", qwExample)
 
 	// check polymorphic values anyOf
 	assert.Equal(t, "an anyOf thing", sch.AnyOf.Value[0].Value.Schema().Description.Value)
@@ -227,12 +236,18 @@ func Test_Schema(t *testing.T) {
 	v = sch.AnyOf.Value[0].Value.Schema().FindProperty("anyOfA")
 	assert.NotNil(t, v)
 	assert.Equal(t, "anyOfA description", v.Value.Schema().Description.Value)
-	assert.Equal(t, "anyOfAExp", v.Value.Schema().Example.Value)
+
+	var vSchemaExample string
+	_ = v.GetValue().Schema().Example.GetValueNode().Decode(&vSchemaExample)
+
+	assert.Equal(t, "anyOfAExp", vSchemaExample)
 
 	v = sch.AnyOf.Value[0].Value.Schema().FindProperty("anyOfB")
 	assert.NotNil(t, v)
 	assert.Equal(t, "anyOfB description", v.Value.Schema().Description.Value)
-	assert.Equal(t, "anyOfBExp", v.Value.Schema().Example.Value)
+
+	_ = v.GetValue().Schema().Example.GetValueNode().Decode(&vSchemaExample)
+	assert.Equal(t, "anyOfBExp", vSchemaExample)
 
 	// check polymorphic values oneOf
 	assert.Equal(t, "a oneof thing", sch.OneOf.Value[0].Value.Schema().Description.Value)
@@ -241,12 +256,16 @@ func Test_Schema(t *testing.T) {
 	v = sch.OneOf.Value[0].Value.Schema().FindProperty("oneOfA")
 	assert.NotNil(t, v)
 	assert.Equal(t, "oneOfA description", v.Value.Schema().Description.Value)
-	assert.Equal(t, "oneOfAExp", v.Value.Schema().Example.Value)
+
+	_ = v.GetValue().Schema().Example.GetValueNode().Decode(&vSchemaExample)
+	assert.Equal(t, "oneOfAExp", vSchemaExample)
 
 	v = sch.OneOf.Value[0].Value.Schema().FindProperty("oneOfB")
 	assert.NotNil(t, v)
 	assert.Equal(t, "oneOfB description", v.Value.Schema().Description.Value)
-	assert.Equal(t, "oneOfBExp", v.Value.Schema().Example.Value)
+
+	_ = v.GetValue().Schema().Example.GetValueNode().Decode(&vSchemaExample)
+	assert.Equal(t, "oneOfBExp", vSchemaExample)
 
 	// check values NOT
 	assert.Equal(t, "a not thing", sch.Not.Value.Schema().Description.Value)
@@ -255,12 +274,16 @@ func Test_Schema(t *testing.T) {
 	v = sch.Not.Value.Schema().FindProperty("notA")
 	assert.NotNil(t, v)
 	assert.Equal(t, "notA description", v.Value.Schema().Description.Value)
-	assert.Equal(t, "notAExp", v.Value.Schema().Example.Value)
+
+	_ = v.GetValue().Schema().Example.GetValueNode().Decode(&vSchemaExample)
+	assert.Equal(t, "notAExp", vSchemaExample)
 
 	v = sch.Not.Value.Schema().FindProperty("notB")
 	assert.NotNil(t, v)
 	assert.Equal(t, "notB description", v.Value.Schema().Description.Value)
-	assert.Equal(t, "notBExp", v.Value.Schema().Example.Value)
+
+	_ = v.GetValue().Schema().Example.GetValueNode().Decode(&vSchemaExample)
+	assert.Equal(t, "notBExp", vSchemaExample)
 
 	// check values Items
 	assert.Equal(t, "an items thing", sch.Items.Value.A.Schema().Description.Value)
@@ -269,12 +292,16 @@ func Test_Schema(t *testing.T) {
 	v = sch.Items.Value.A.Schema().FindProperty("itemsA")
 	assert.NotNil(t, v)
 	assert.Equal(t, "itemsA description", v.Value.Schema().Description.Value)
-	assert.Equal(t, "itemsAExp", v.Value.Schema().Example.Value)
+
+	_ = v.GetValue().Schema().Example.GetValueNode().Decode(&vSchemaExample)
+	assert.Equal(t, "itemsAExp", vSchemaExample)
 
 	v = sch.Items.Value.A.Schema().FindProperty("itemsB")
 	assert.NotNil(t, v)
 	assert.Equal(t, "itemsB description", v.Value.Schema().Description.Value)
-	assert.Equal(t, "itemsBExp", v.Value.Schema().Example.Value)
+
+	_ = v.GetValue().Schema().Example.GetValueNode().Decode(&vSchemaExample)
+	assert.Equal(t, "itemsBExp", vSchemaExample)
 
 	// check values PrefixItems
 	assert.Equal(t, "an items thing", sch.PrefixItems.Value[0].Value.Schema().Description.Value)
@@ -283,17 +310,21 @@ func Test_Schema(t *testing.T) {
 	v = sch.PrefixItems.Value[0].Value.Schema().FindProperty("itemsA")
 	assert.NotNil(t, v)
 	assert.Equal(t, "itemsA description", v.Value.Schema().Description.Value)
-	assert.Equal(t, "itemsAExp", v.Value.Schema().Example.Value)
+
+	_ = v.GetValue().Schema().Example.GetValueNode().Decode(&vSchemaExample)
+	assert.Equal(t, "itemsAExp", vSchemaExample)
 
 	v = sch.PrefixItems.Value[0].Value.Schema().FindProperty("itemsB")
 	assert.NotNil(t, v)
 	assert.Equal(t, "itemsB description", v.Value.Schema().Description.Value)
-	assert.Equal(t, "itemsBExp", v.Value.Schema().Example.Value)
+
+	_ = v.GetValue().Schema().Example.GetValue().Decode(&vSchemaExample)
+	assert.Equal(t, "itemsBExp", vSchemaExample)
 
 	// check discriminator
 	assert.NotNil(t, sch.Discriminator.Value)
 	assert.Equal(t, "athing", sch.Discriminator.Value.PropertyName.Value)
-	assert.Len(t, sch.Discriminator.Value.Mapping.Value, 2)
+	assert.Equal(t, 2, sch.Discriminator.GetValue().Mapping.GetValue().Len())
 	mv := sch.Discriminator.Value.FindMappingValue("log")
 	assert.Equal(t, "cat", mv.Value)
 	mv = sch.Discriminator.Value.FindMappingValue("pizza")
@@ -429,12 +460,20 @@ const: tasty`
 	assert.Equal(t, float64(12), sch.ExclusiveMinimum.Value.B)
 	assert.Equal(t, float64(13), sch.ExclusiveMaximum.Value.B)
 	assert.Len(t, sch.Examples.Value, 1)
-	assert.Equal(t, "testing", sch.Examples.Value[0].Value)
+
+	var example0 string
+	_ = sch.Examples.GetValue()[0].GetValue().Decode(&example0)
+
+	assert.Equal(t, "testing", example0)
 	assert.Equal(t, "fish64", sch.ContentEncoding.Value)
 	assert.Equal(t, "fish/paste", sch.ContentMediaType.Value)
 	assert.True(t, sch.Items.Value.IsB())
 	assert.True(t, sch.Items.Value.B)
-	assert.Equal(t, "tasty", sch.Const.Value)
+
+	var schConst string
+	_ = sch.Const.GetValue().Decode(&schConst)
+
+	assert.Equal(t, "tasty", schConst)
 }
 
 func TestSchema_Build_PropsLookup(t *testing.T) {
@@ -986,7 +1025,11 @@ schema:
 	assert.NoError(t, err)
 	assert.NotNil(t, res.Value)
 	sch := res.Value.Schema()
-	assert.Equal(t, 5, sch.Default.Value)
+
+	var def int
+	_ = sch.Default.GetValueNode().Decode(&def)
+
+	assert.Equal(t, 5, def)
 }
 
 func TestExtractSchema_ConstPrimitive(t *testing.T) {
@@ -1002,7 +1045,11 @@ schema:
 	assert.NoError(t, err)
 	assert.NotNil(t, res.Value)
 	sch := res.Value.Schema()
-	assert.Equal(t, 5, sch.Const.Value)
+
+	var cnst int
+	_ = sch.Const.GetValueNode().Decode(&cnst)
+
+	assert.Equal(t, 5, cnst)
 }
 
 func TestExtractSchema_Ref(t *testing.T) {
@@ -1785,7 +1832,6 @@ components:
 	res, e := ExtractSchema(context.Background(), idxNode.Content[0], idx)
 	assert.Nil(t, res)
 	assert.Equal(t, "schema build failed: reference '[empty]' cannot be found at line 2, col 9", e.Error())
-
 }
 
 func TestSchema_EmptyRef(t *testing.T) {
@@ -1814,5 +1860,4 @@ components:
 	res, e := ExtractSchema(context.Background(), idxNode.Content[0], idx)
 	assert.Nil(t, res)
 	assert.Equal(t, "schema build failed: reference '[empty]' cannot be found at line 1, col 7", e.Error())
-
 }

datamodel/low/base/security_requirement.go

@@ -26,7 +26,7 @@ import (
 //   - https://swagger.io/specification/v2/#securityDefinitionsObject
 //   - https://swagger.io/specification/#security-requirement-object
 type SecurityRequirement struct {
-	Requirements low.ValueReference[orderedmap.Map[low.KeyReference[string], low.ValueReference[[]low.ValueReference[string]]]]
+	Requirements low.ValueReference[*orderedmap.Map[low.KeyReference[string], low.ValueReference[[]low.ValueReference[string]]]]
 	*low.Reference
 }
 
@@ -61,7 +61,7 @@ func (s *SecurityRequirement) Build(_ context.Context, _, root *yaml.Node, _ *in
 			},
 		)
 	}
-	s.Requirements = low.ValueReference[orderedmap.Map[low.KeyReference[string], low.ValueReference[[]low.ValueReference[string]]]]{
+	s.Requirements = low.ValueReference[*orderedmap.Map[low.KeyReference[string], low.ValueReference[[]low.ValueReference[string]]]]{
 		Value:     valueMap,
 		ValueNode: root,
 	}
@@ -91,22 +91,14 @@ func (s *SecurityRequirement) GetKeys() []string {
 // Hash will return a consistent SHA256 Hash of the SecurityRequirement object
 func (s *SecurityRequirement) Hash() [32]byte {
 	var f []string
-	values := make(map[string][]string, orderedmap.Len(s.Requirements.Value))
+	for pair := orderedmap.First(orderedmap.SortAlpha(s.Requirements.Value)); pair != nil; pair = pair.Next() {
-	var valKeys []string
-	for pair := orderedmap.First(s.Requirements.Value); pair != nil; pair = pair.Next() {
 		var vals []string
 		for y := range pair.Value().Value {
 			vals = append(vals, pair.Value().Value[y].Value)
 		}
 		sort.Strings(vals)
-		valKeys = append(valKeys, pair.Key().Value)
+
-		if len(vals) > 0 {
+		f = append(f, fmt.Sprintf("%s-%s", pair.Key().Value, strings.Join(vals, "|")))
-			values[pair.Key().Value] = vals
-		}
-	}
-	sort.Strings(valKeys)
-	for val := range valKeys {
-		f = append(f, fmt.Sprintf("%s-%s", valKeys[val], strings.Join(values[valKeys[val]], "|")))
 	}
 	return sha256.Sum256([]byte(strings.Join(f, "|")))
 }

datamodel/low/base/tag.go

@@ -6,13 +6,13 @@ package base
 import (
 	"context"
 	"crypto/sha256"
-	"fmt"
+	"strings"
+
 	"github.com/pb33f/libopenapi/datamodel/low"
 	"github.com/pb33f/libopenapi/index"
+	"github.com/pb33f/libopenapi/orderedmap"
 	"github.com/pb33f/libopenapi/utils"
 	"gopkg.in/yaml.v3"
-	"sort"
-	"strings"
 )
 
 // Tag represents a low-level Tag instance that is backed by a low-level one.
@@ -25,13 +25,13 @@ type Tag struct {
 	Name         low.NodeReference[string]
 	Description  low.NodeReference[string]
 	ExternalDocs low.NodeReference[*ExternalDoc]
-	Extensions   map[low.KeyReference[string]]low.ValueReference[any]
+	Extensions   *orderedmap.Map[low.KeyReference[string], low.ValueReference[*yaml.Node]]
 	*low.Reference
 }
 
 // FindExtension returns a ValueReference containing the extension value, if found.
-func (t *Tag) FindExtension(ext string) *low.ValueReference[any] {
+func (t *Tag) FindExtension(ext string) *low.ValueReference[*yaml.Node] {
-	return low.FindItemInMap[any](ext, t.Extensions)
+	return low.FindItemInOrderedMap(ext, t.Extensions)
 }
 
 // Build will extract extensions and external docs for the Tag.
@@ -48,7 +48,7 @@ func (t *Tag) Build(ctx context.Context, _, root *yaml.Node, idx *index.SpecInde
 }
 
 // GetExtensions returns all Tag extensions and satisfies the low.HasExtensions interface.
-func (t *Tag) GetExtensions() map[low.KeyReference[string]]low.ValueReference[any] {
+func (t *Tag) GetExtensions() *orderedmap.Map[low.KeyReference[string], low.ValueReference[*yaml.Node]] {
 	return t.Extensions
 }
 
@@ -64,13 +64,6 @@ func (t *Tag) Hash() [32]byte {
 	if !t.ExternalDocs.IsEmpty() {
 		f = append(f, low.GenerateHashString(t.ExternalDocs.Value))
 	}
-	keys := make([]string, len(t.Extensions))
+	f = append(f, low.HashExtensions(t.Extensions)...)
-	z := 0
-	for k := range t.Extensions {
-		keys[z] = fmt.Sprintf("%s-%x", k.Value, sha256.Sum256([]byte(fmt.Sprint(t.Extensions[k].Value))))
-		z++
-	}
-	sort.Strings(keys)
-	f = append(f, keys...)
 	return sha256.Sum256([]byte(strings.Join(f, "|")))
 }

datamodel/low/base/tag_test.go

@@ -5,15 +5,16 @@ package base
 
 import (
 	"context"
+	"testing"
+
 	"github.com/pb33f/libopenapi/datamodel/low"
 	"github.com/pb33f/libopenapi/index"
+	"github.com/pb33f/libopenapi/orderedmap"
 	"github.com/stretchr/testify/assert"
 	"gopkg.in/yaml.v3"
-	"testing"
 )
 
 func TestTag_Build(t *testing.T) {
-
 	yml := `name: a tag
 description: a description
 externalDocs: 
@@ -33,13 +34,15 @@ x-coffee: tasty`
 	assert.Equal(t, "a tag", n.Name.Value)
 	assert.Equal(t, "a description", n.Description.Value)
 	assert.Equal(t, "https://pb33f.io", n.ExternalDocs.Value.URL.Value)
-	assert.Equal(t, "tasty", n.FindExtension("x-coffee").Value)
-	assert.Len(t, n.GetExtensions(), 1)
 
+	var xCoffee string
+	_ = n.FindExtension("x-coffee").GetValue().Decode(&xCoffee)
+
+	assert.Equal(t, "tasty", xCoffee)
+	assert.Equal(t, 1, orderedmap.Len(n.GetExtensions()))
 }
 
 func TestTag_Build_Error(t *testing.T) {
-
 	yml := `name: a tag
 description: a description
 externalDocs: 
@@ -58,7 +61,6 @@ externalDocs:
 }
 
 func TestTag_Hash(t *testing.T) {
-
 	left := `name: melody
 description: my princess
 externalDocs:
@@ -84,5 +86,4 @@ x-b33f: princess`
 	_ = rDoc.Build(context.Background(), nil, rNode.Content[0], nil)
 
 	assert.Equal(t, lDoc.Hash(), rDoc.Hash())
-
 }

datamodel/low/base/xml.go

@@ -3,12 +3,13 @@ package base
 import (
 	"crypto/sha256"
 	"fmt"
+	"strings"
+
 	"github.com/pb33f/libopenapi/datamodel/low"
 	"github.com/pb33f/libopenapi/index"
+	"github.com/pb33f/libopenapi/orderedmap"
 	"github.com/pb33f/libopenapi/utils"
 	"gopkg.in/yaml.v3"
-	"sort"
-	"strings"
 )
 
 // XML represents a low-level representation of an XML object defined by all versions of OpenAPI.
@@ -26,7 +27,7 @@ type XML struct {
 	Prefix     low.NodeReference[string]
 	Attribute  low.NodeReference[bool]
 	Wrapped    low.NodeReference[bool]
-	Extensions map[low.KeyReference[string]]low.ValueReference[any]
+	Extensions *orderedmap.Map[low.KeyReference[string], low.ValueReference[*yaml.Node]]
 	*low.Reference
 }
 
@@ -40,7 +41,7 @@ func (x *XML) Build(root *yaml.Node, _ *index.SpecIndex) error {
 }
 
 // GetExtensions returns all Tag extensions and satisfies the low.HasExtensions interface.
-func (x *XML) GetExtensions() map[low.KeyReference[string]]low.ValueReference[any] {
+func (x *XML) GetExtensions() *orderedmap.Map[low.KeyReference[string], low.ValueReference[*yaml.Node]] {
 	return x.Extensions
 }
 
@@ -62,13 +63,6 @@ func (x *XML) Hash() [32]byte {
 	if !x.Wrapped.IsEmpty() {
 		f = append(f, fmt.Sprint(x.Wrapped.Value))
 	}
-	keys := make([]string, len(x.Extensions))
+	f = append(f, low.HashExtensions(x.Extensions)...)
-	z := 0
-	for k := range x.Extensions {
-		keys[z] = fmt.Sprintf("%s-%x", k.Value, sha256.Sum256([]byte(fmt.Sprint(x.Extensions[k].Value))))
-		z++
-	}
-	sort.Strings(keys)
-	f = append(f, keys...)
 	return sha256.Sum256([]byte(strings.Join(f, "|")))
 }

datamodel/low/extraction_functions.go

@@ -7,37 +7,24 @@ import (
 	"context"
 	"crypto/sha256"
 	"fmt"
+	"net/url"
+	"path/filepath"
 	"reflect"
-	"strconv"
 	"strings"
+	"sync"
 
+	"github.com/pb33f/libopenapi/datamodel"
 	"github.com/pb33f/libopenapi/index"
 	"github.com/pb33f/libopenapi/orderedmap"
 	"github.com/pb33f/libopenapi/utils"
 	"github.com/vmware-labs/yaml-jsonpath/pkg/yamlpath"
 	"gopkg.in/yaml.v3"
-	"net/url"
-	"path/filepath"
 )
 
-// FindItemInMap accepts a string key and a collection of KeyReference[string] and ValueReference[T]. Every
-// KeyReference will have its value checked against the string key and if there is a match, it will be returned.
-func FindItemInMap[T any](item string, collection map[KeyReference[string]]ValueReference[T]) *ValueReference[T] {
-	for n, o := range collection {
-		if n.Value == item {
-			return &o
-		}
-		if strings.EqualFold(item, n.Value) {
-			return &o
-		}
-	}
-	return nil
-}
-
 // FindItemInOrderedMap accepts a string key and a collection of KeyReference[string] and ValueReference[T].
 // Every KeyReference will have its value checked against the string key and if there is a match, it will be
 // returned.
-func FindItemInOrderedMap[T any](item string, collection orderedmap.Map[KeyReference[string], ValueReference[T]]) *ValueReference[T] {
+func FindItemInOrderedMap[T any](item string, collection *orderedmap.Map[KeyReference[string], ValueReference[T]]) *ValueReference[T] {
 	for pair := orderedmap.First(collection); pair != nil; pair = pair.Next() {
 		n := pair.Key()
 		if n.Value == item {
@@ -50,6 +37,18 @@ func FindItemInOrderedMap[T any](item string, collection orderedmap.Map[KeyRefer
 	return nil
 }
 
+// HashExtensions will generate a hash from the low representation of extensions.
+func HashExtensions(ext *orderedmap.Map[KeyReference[string], ValueReference[*yaml.Node]]) []string {
+	f := []string{}
+
+	for pair := orderedmap.First(orderedmap.SortAlpha(ext)); pair != nil; pair = pair.Next() {
+		b, _ := yaml.Marshal(pair.Value().GetValue())
+		f = append(f, fmt.Sprintf("%s-%x", pair.Key().Value, sha256.Sum256([]byte(b))))
+	}
+
+	return f
+}
+
 // helper function to generate a list of all the things an index should be searched for.
 func generateIndexCollection(idx *index.SpecIndex) []func() map[string]*index.Reference {
 	return []func() map[string]*index.Reference{
@@ -68,7 +67,6 @@ func generateIndexCollection(idx *index.SpecIndex) []func() map[string]*index.Re
 }
 
 func LocateRefNodeWithContext(ctx context.Context, root *yaml.Node, idx *index.SpecIndex) (*yaml.Node, *index.SpecIndex, error, context.Context) {
-
 	if rf, _, rv := utils.IsNodeRefValue(root); rf {
 
 		if rv == "" {
@@ -112,9 +110,7 @@ func LocateRefNodeWithContext(ctx context.Context, root *yaml.Node, idx *index.S
 		explodedRefValue := strings.Split(rv, "#")
 		if len(explodedRefValue) == 2 {
 			if !strings.HasPrefix(explodedRefValue[0], "http") {
-
 				if !filepath.IsAbs(explodedRefValue[0]) {
-
 					if strings.HasPrefix(specPath, "http") {
 						u, _ := url.Parse(specPath)
 						p := ""
@@ -137,7 +133,6 @@ func LocateRefNodeWithContext(ctx context.Context, root *yaml.Node, idx *index.S
 							}
 							rv = fmt.Sprintf("%s#%s", abs, explodedRefValue[1])
 						} else {
-
 							// check for a config baseURL and use that if it exists.
 							if idx.GetConfig().BaseURL != nil {
 
@@ -154,11 +149,8 @@ func LocateRefNodeWithContext(ctx context.Context, root *yaml.Node, idx *index.S
 				}
 			}
 		} else {
-
 			if !strings.HasPrefix(explodedRefValue[0], "http") {
-
 				if !filepath.IsAbs(explodedRefValue[0]) {
-
 					if strings.HasPrefix(specPath, "http") {
 						u, _ := url.Parse(specPath)
 						p := filepath.Dir(u.Path)
@@ -173,7 +165,6 @@ func LocateRefNodeWithContext(ctx context.Context, root *yaml.Node, idx *index.S
 							rv = abs
 
 						} else {
-
 							// check for a config baseURL and use that if it exists.
 							if idx.GetConfig().BaseURL != nil {
 								u := *idx.GetConfig().BaseURL
@@ -211,7 +202,6 @@ func LocateRefNodeWithContext(ctx context.Context, root *yaml.Node, idx *index.S
 			rv, root.Line, root.Column), ctx
 	}
 	return nil, idx, nil, ctx
-
 }
 
 // LocateRefNode will perform a complete lookup for a $ref node. This function searches the entire index for
@@ -227,10 +217,12 @@ func ExtractObjectRaw[T Buildable[N], N any](ctx context.Context, key, root *yam
 	var circError error
 	var isReference bool
 	var referenceValue string
+	var refNode *yaml.Node
 	root = utils.NodeAlias(root)
 	if h, _, rv := utils.IsNodeRefValue(root); h {
 		ref, fIdx, err, nCtx := LocateRefNodeWithContext(ctx, root, idx)
 		if ref != nil {
+			refNode = root
 			root = ref
 			isReference = true
 			referenceValue = rv
@@ -257,7 +249,7 @@ func ExtractObjectRaw[T Buildable[N], N any](ctx context.Context, key, root *yam
 
 	// if this is a reference, keep track of the reference in the value
 	if isReference {
-		SetReference(n, referenceValue)
+		SetReference(n, referenceValue, refNode)
 	}
 
 	// do we want to throw an error as well if circular error reporting is on?
@@ -274,10 +266,12 @@ func ExtractObject[T Buildable[N], N any](ctx context.Context, label string, roo
 	var circError error
 	var isReference bool
 	var referenceValue string
+	var refNode *yaml.Node
 	root = utils.NodeAlias(root)
 	if rf, rl, refVal := utils.IsNodeRefValue(root); rf {
 		ref, fIdx, err, nCtx := LocateRefNodeWithContext(ctx, root, idx)
 		if ref != nil {
+			refNode = root
 			vn = ref
 			ln = rl
 			isReference = true
@@ -298,6 +292,7 @@ func ExtractObject[T Buildable[N], N any](ctx context.Context, label string, roo
 			if h, _, rVal := utils.IsNodeRefValue(vn); h {
 				ref, fIdx, lerr, nCtx := LocateRefNodeWithContext(ctx, vn, idx)
 				if ref != nil {
+					refNode = vn
 					vn = ref
 					if fIdx != nil {
 						idx = fIdx
@@ -331,16 +326,15 @@ func ExtractObject[T Buildable[N], N any](ctx context.Context, label string, roo
 
 	// if this is a reference, keep track of the reference in the value
 	if isReference {
-		SetReference(n, referenceValue)
+		SetReference(n, referenceValue, refNode)
 	}
 
 	res := NodeReference[T]{
 		Value:     n,
 		KeyNode:   ln,
 		ValueNode: vn,
-		ReferenceNode: isReference,
-		Reference:     referenceValue,
 	}
+	res.SetReference(referenceValue, refNode)
 
 	// do we want to throw an error as well if circular error reporting is on?
 	if circError != nil && !idx.AllowCircularReferenceResolving() {
@@ -349,12 +343,13 @@ func ExtractObject[T Buildable[N], N any](ctx context.Context, label string, roo
 	return res, nil
 }
 
-func SetReference(obj any, ref string) {
+func SetReference(obj any, ref string, refNode *yaml.Node) {
 	if obj == nil {
 		return
 	}
-	if r, ok := obj.(IsReferenced); ok {
+
-		r.SetReference(ref)
+	if r, ok := obj.(SetReferencer); ok {
+		r.SetReference(ref, refNode)
 	}
 }
 
@@ -429,9 +424,12 @@ func ExtractArray[T Buildable[N], N any](ctx context.Context, label string, root
 			foundCtx := ctx
 			foundIndex := idx
 
+			var refNode *yaml.Node
+
 			if rf, _, rv := utils.IsNodeRefValue(node); rf {
 				refg, fIdx, err, nCtx := LocateRefEnd(ctx, node, idx, 0)
 				if refg != nil {
+					refNode = node
 					node = refg
 					localReferenceValue = rv
 					foundIndex = fIdx
@@ -457,15 +455,16 @@ func ExtractArray[T Buildable[N], N any](ctx context.Context, label string, root
 			}
 
 			if localReferenceValue != "" {
-				SetReference(n, localReferenceValue)
+				SetReference(n, localReferenceValue, refNode)
 			}
 
-			items = append(items, ValueReference[T]{
+			v := ValueReference[T]{
 				Value:     n,
 				ValueNode: node,
-				ReferenceNode: localReferenceValue != "",
+			}
-				Reference:     localReferenceValue,
+			v.SetReference(localReferenceValue, refNode)
-			})
+
+			items = append(items, v)
 		}
 	}
 	// include circular errors?
@@ -475,23 +474,6 @@ func ExtractArray[T Buildable[N], N any](ctx context.Context, label string, root
 	return items, ln, vn, nil
 }
 
-// ExtractExample will extract a value supplied as an example into a NodeReference. Value can be anything.
-// the node value is untyped, so casting will be required when trying to use it.
-func ExtractExample(expNode, expLabel *yaml.Node) NodeReference[any] {
-	ref := NodeReference[any]{Value: expNode.Value, KeyNode: expLabel, ValueNode: expNode}
-	if utils.IsNodeMap(expNode) {
-		var decoded map[string]interface{}
-		_ = expNode.Decode(&decoded)
-		ref.Value = decoded
-	}
-	if utils.IsNodeArray(expNode) {
-		var decoded []interface{}
-		_ = expNode.Decode(&decoded)
-		ref.Value = decoded
-	}
-	return ref
-}
-
 // ExtractMapNoLookupExtensions will extract a map of KeyReference and ValueReference from a root yaml.Node. The 'NoLookup' part
 // refers to the fact that there is no key supplied as part of the extraction, there  is no lookup performed and the
 // root yaml.Node pointer is used directly. Pass a true bit to includeExtensions to include extension keys in the map.
@@ -502,7 +484,7 @@ func ExtractMapNoLookupExtensions[PT Buildable[N], N any](
 	root *yaml.Node,
 	idx *index.SpecIndex,
 	includeExtensions bool,
-) (orderedmap.Map[KeyReference[string], ValueReference[PT]], error) {
+) (*orderedmap.Map[KeyReference[string], ValueReference[PT]], error) {
 	valueMap := orderedmap.New[KeyReference[string], ValueReference[PT]]()
 	var circError error
 	if utils.IsNodeMap(root) {
@@ -540,10 +522,12 @@ func ExtractMapNoLookupExtensions[PT Buildable[N], N any](
 
 			var isReference bool
 			var referenceValue string
+			var refNode *yaml.Node
 			// if value is a reference, we have to look it up in the index!
 			if h, _, rv := utils.IsNodeRefValue(node); h {
 				ref, fIdx, err, nCtx := LocateRefNodeWithContext(ctx, node, idx)
 				if ref != nil {
+					refNode = node
 					node = ref
 					isReference = true
 					referenceValue = rv
@@ -570,19 +554,21 @@ func ExtractMapNoLookupExtensions[PT Buildable[N], N any](
 				return nil, berr
 			}
 			if isReference {
-				SetReference(n, referenceValue)
+				SetReference(n, referenceValue, refNode)
 			}
 			if currentKey != nil {
+				v := ValueReference[PT]{
+					Value:     n,
+					ValueNode: node,
+				}
+				v.SetReference(referenceValue, refNode)
+
 				valueMap.Set(
 					KeyReference[string]{
 						Value:   currentKey.Value,
 						KeyNode: currentKey,
 					},
-					ValueReference[PT]{
+					v,
-						Value:     n,
-						ValueNode: node,
-						Reference: referenceValue,
-					},
 				)
 			}
 		}
@@ -591,7 +577,6 @@ func ExtractMapNoLookupExtensions[PT Buildable[N], N any](
 		return valueMap, circError
 	}
 	return valueMap, nil
-
 }
 
 // ExtractMapNoLookup will extract a map of KeyReference and ValueReference from a root yaml.Node. The 'NoLookup' part
@@ -603,7 +588,7 @@ func ExtractMapNoLookup[PT Buildable[N], N any](
 	ctx context.Context,
 	root *yaml.Node,
 	idx *index.SpecIndex,
-) (orderedmap.Map[KeyReference[string], ValueReference[PT]], error) {
+) (*orderedmap.Map[KeyReference[string], ValueReference[PT]], error) {
 	return ExtractMapNoLookupExtensions[PT, N](ctx, root, idx, false)
 }
 
@@ -624,7 +609,186 @@ func ExtractMapExtensions[PT Buildable[N], N any](
 	root *yaml.Node,
 	idx *index.SpecIndex,
 	extensions bool,
-) (orderedmap.Map[KeyReference[string], ValueReference[PT]], *yaml.Node, *yaml.Node, error) {
+) (*orderedmap.Map[KeyReference[string], ValueReference[PT]], *yaml.Node, *yaml.Node, error) {
+	var labelNode, valueNode *yaml.Node
+	var circError error
+	root = utils.NodeAlias(root)
+	if rf, rl, _ := utils.IsNodeRefValue(root); rf {
+		// locate reference in index.
+		ref, fIdx, err, fCtx := LocateRefNodeWithContext(ctx, root, idx)
+		if ref != nil {
+			valueNode = ref
+			labelNode = rl
+			ctx = fCtx
+			idx = fIdx
+			if err != nil {
+				circError = err
+			}
+		} else {
+			return nil, labelNode, valueNode, fmt.Errorf("map build failed: reference cannot be found: %s",
+				root.Content[1].Value)
+		}
+	} else {
+		_, labelNode, valueNode = utils.FindKeyNodeFull(label, root.Content)
+		valueNode = utils.NodeAlias(valueNode)
+		if valueNode != nil {
+			if h, _, _ := utils.IsNodeRefValue(valueNode); h {
+				ref, fIdx, err, nCtx := LocateRefNodeWithContext(ctx, valueNode, idx)
+				if ref != nil {
+					valueNode = ref
+					idx = fIdx
+					ctx = nCtx
+					if err != nil {
+						circError = err
+					}
+				} else {
+					if err != nil {
+						return nil, labelNode, valueNode, fmt.Errorf("map build failed: reference cannot be found: %s",
+							err.Error())
+					}
+				}
+			}
+		}
+	}
+	if valueNode != nil {
+		valueMap := orderedmap.New[KeyReference[string], ValueReference[PT]]()
+
+		type buildInput struct {
+			label *yaml.Node
+			value *yaml.Node
+		}
+		in := make(chan buildInput)
+		out := make(chan mappingResult[PT])
+		done := make(chan struct{})
+		var wg sync.WaitGroup
+		wg.Add(2) // input and output goroutines.
+
+		// TranslatePipeline input.
+		go func() {
+			defer func() {
+				close(in)
+				wg.Done()
+			}()
+			var currentLabelNode *yaml.Node
+			for i, en := range valueNode.Content {
+				if !extensions {
+					if strings.HasPrefix(en.Value, "x-") {
+						continue // yo, don't pay any attention to extensions, not here anyway.
+					}
+				}
+
+				en = utils.NodeAlias(en)
+				if i%2 == 0 {
+					currentLabelNode = en
+					continue
+				}
+
+				select {
+				case in <- buildInput{
+					label: currentLabelNode,
+					value: en,
+				}:
+				case <-done:
+					return
+				}
+			}
+		}()
+
+		// TranslatePipeline output.
+		go func() {
+			for {
+				result, ok := <-out
+				if !ok {
+					break
+				}
+				valueMap.Set(result.k, result.v)
+			}
+			close(done)
+			wg.Done()
+		}()
+
+		translateFunc := func(input buildInput) (mappingResult[PT], error) {
+			foundIndex := idx
+			foundContext := ctx
+
+			en := input.value
+
+			var refNode *yaml.Node
+			var referenceValue string
+			// check our valueNode isn't a reference still.
+			if h, _, refVal := utils.IsNodeRefValue(en); h {
+				ref, fIdx, err, nCtx := LocateRefNodeWithContext(ctx, en, idx)
+				if ref != nil {
+					refNode = en
+					en = ref
+					referenceValue = refVal
+					if fIdx != nil {
+						foundIndex = fIdx
+					}
+					foundContext = nCtx
+					if err != nil {
+						circError = err
+					}
+				} else {
+					if err != nil {
+						return mappingResult[PT]{}, fmt.Errorf("flat map build failed: reference cannot be found: %s",
+							err.Error())
+					}
+				}
+			}
+
+			var n PT = new(N)
+			en = utils.NodeAlias(en)
+			_ = BuildModel(en, n)
+			err := n.Build(foundContext, input.label, en, foundIndex)
+			if err != nil {
+				return mappingResult[PT]{}, err
+			}
+
+			if referenceValue != "" {
+				SetReference(n, referenceValue, refNode)
+			}
+
+			v := ValueReference[PT]{
+				Value:     n,
+				ValueNode: en,
+			}
+			v.SetReference(referenceValue, refNode)
+
+			return mappingResult[PT]{
+				k: KeyReference[string]{
+					KeyNode: input.label,
+					Value:   input.label.Value,
+				},
+				v: v,
+			}, nil
+		}
+		err := datamodel.TranslatePipeline[buildInput, mappingResult[PT]](in, out, translateFunc)
+		wg.Wait()
+		if err != nil {
+			return nil, labelNode, valueNode, err
+		}
+		if circError != nil && !idx.AllowCircularReferenceResolving() {
+			return valueMap, labelNode, valueNode, circError
+		}
+		return valueMap, labelNode, valueNode, nil
+	}
+	return nil, labelNode, valueNode, nil
+}
+
+// ExtractMapExtensions will extract a map of KeyReference and ValueReference from a root yaml.Node. The 'label' is
+// used to locate the node to be extracted from the root node supplied. Supply a bit to decide if extensions should
+// be included or not. required in some use cases.
+//
+// The second return value is the yaml.Node found for the 'label' and the third return value is the yaml.Node
+// found for the value extracted from the label node.
+func ExtractMapExtensionsOld[PT Buildable[N], N any](
+	ctx context.Context,
+	label string,
+	root *yaml.Node,
+	idx *index.SpecIndex,
+	extensions bool,
+) (*orderedmap.Map[KeyReference[string], ValueReference[PT]], *yaml.Node, *yaml.Node, error) {
 	var referenceValue string
 	var labelNode, valueNode *yaml.Node
 	var circError error
@@ -687,7 +851,7 @@ func ExtractMapExtensions[PT Buildable[N], N any](
 			}
 
 			if ref != "" {
-				SetReference(n, ref)
+				SetReference(n, ref, nil)
 			}
 
 			c <- mappingResult[PT]{
@@ -698,7 +862,7 @@ func ExtractMapExtensions[PT Buildable[N], N any](
 				v: ValueReference[PT]{
 					Value:     n,
 					ValueNode: value,
-					Reference: ref,
+					// Reference: ref,
 				},
 			}
 		}
@@ -773,7 +937,7 @@ func ExtractMap[PT Buildable[N], N any](
 	label string,
 	root *yaml.Node,
 	idx *index.SpecIndex,
-) (orderedmap.Map[KeyReference[string], ValueReference[PT]], *yaml.Node, *yaml.Node, error) {
+) (*orderedmap.Map[KeyReference[string], ValueReference[PT]], *yaml.Node, *yaml.Node, error) {
 	return ExtractMapExtensions[PT, N](ctx, label, root, idx, false)
 }
 
@@ -781,7 +945,7 @@ func ExtractMap[PT Buildable[N], N any](
 //
 // Maps
 //
-//	map[string]interface{} for maps
+//	*orderedmap.Map[string, *yaml.Node] for maps
 //
 // Slices
 //
@@ -790,54 +954,15 @@ func ExtractMap[PT Buildable[N], N any](
 // int, float, bool, string
 //
 //	int64, float64, bool, string
-func ExtractExtensions(root *yaml.Node) map[KeyReference[string]]ValueReference[any] {
+func ExtractExtensions(root *yaml.Node) *orderedmap.Map[KeyReference[string], ValueReference[*yaml.Node]] {
 	root = utils.NodeAlias(root)
 	extensions := utils.FindExtensionNodes(root.Content)
-	extensionMap := make(map[KeyReference[string]]ValueReference[any])
+	extensionMap := orderedmap.New[KeyReference[string], ValueReference[*yaml.Node]]()
 	for _, ext := range extensions {
-		if utils.IsNodeMap(ext.Value) {
+		extensionMap.Set(KeyReference[string]{
-			var v interface{}
-			_ = ext.Value.Decode(&v)
-			extensionMap[KeyReference[string]{
 			Value:   ext.Key.Value,
 			KeyNode: ext.Key,
-			}] = ValueReference[any]{Value: v, ValueNode: ext.Value}
+		}, ValueReference[*yaml.Node]{Value: ext.Value, ValueNode: ext.Value})
-		}
-		if utils.IsNodeStringValue(ext.Value) {
-			extensionMap[KeyReference[string]{
-				Value:   ext.Key.Value,
-				KeyNode: ext.Key,
-			}] = ValueReference[any]{Value: ext.Value.Value, ValueNode: ext.Value}
-		}
-		if utils.IsNodeFloatValue(ext.Value) {
-			fv, _ := strconv.ParseFloat(ext.Value.Value, 64)
-			extensionMap[KeyReference[string]{
-				Value:   ext.Key.Value,
-				KeyNode: ext.Key,
-			}] = ValueReference[any]{Value: fv, ValueNode: ext.Value}
-		}
-		if utils.IsNodeIntValue(ext.Value) {
-			iv, _ := strconv.ParseInt(ext.Value.Value, 10, 64)
-			extensionMap[KeyReference[string]{
-				Value:   ext.Key.Value,
-				KeyNode: ext.Key,
-			}] = ValueReference[any]{Value: iv, ValueNode: ext.Value}
-		}
-		if utils.IsNodeBoolValue(ext.Value) {
-			bv, _ := strconv.ParseBool(ext.Value.Value)
-			extensionMap[KeyReference[string]{
-				Value:   ext.Key.Value,
-				KeyNode: ext.Key,
-			}] = ValueReference[any]{Value: bv, ValueNode: ext.Value}
-		}
-		if utils.IsNodeArray(ext.Value) {
-			var v []interface{}
-			_ = ext.Value.Decode(&v)
-			extensionMap[KeyReference[string]{
-				Value:   ext.Key.Value,
-				KeyNode: ext.Key,
-			}] = ValueReference[any]{Value: v, ValueNode: ext.Value}
-		}
 	}
 	return extensionMap
 }
@@ -869,6 +994,10 @@ func GenerateHashString(v any) string {
 			return fmt.Sprintf(HASH, h.Hash())
 		}
 	}
+	if n, ok := v.(*yaml.Node); ok {
+		b, _ := yaml.Marshal(n)
+		return fmt.Sprintf(HASH, sha256.Sum256(b))
+	}
 	// if we get here, we're a primitive, check if we're a pointer and de-point
 	if reflect.TypeOf(v).Kind() == reflect.Ptr {
 		v = reflect.ValueOf(v).Elem().Interface()
@@ -876,6 +1005,15 @@ func GenerateHashString(v any) string {
 	return fmt.Sprintf(HASH, sha256.Sum256([]byte(fmt.Sprint(v))))
 }
 
+func ValueToString(v any) string {
+	if n, ok := v.(*yaml.Node); ok {
+		b, _ := yaml.Marshal(n)
+		return string(b)
+	}
+
+	return fmt.Sprint(v)
+}
+
 // LocateRefEnd will perform a complete lookup for a $ref node. This function searches the entire index for
 // the reference being supplied. If there is a match found, the reference *yaml.Node is returned.
 // the function operates recursively and will keep iterating through references until it finds a non-reference

datamodel/low/extraction_functions_test.go

@@ -7,51 +7,52 @@ import (
 	"context"
 	"crypto/sha256"
 	"fmt"
-	"golang.org/x/sync/syncmap"
-	"gopkg.in/yaml.v3"
 	"net/url"
 	"os"
 	"path/filepath"
 	"strings"
 	"testing"
 
+	"golang.org/x/sync/syncmap"
+	"gopkg.in/yaml.v3"
+
 	"github.com/pb33f/libopenapi/index"
 	"github.com/pb33f/libopenapi/orderedmap"
 	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
 )
 
-func TestFindItemInMap(t *testing.T) {
+func TestFindItemInOrderedMap(t *testing.T) {
-	v := make(map[KeyReference[string]]ValueReference[string])
+	v := orderedmap.New[KeyReference[string], ValueReference[string]]()
-	v[KeyReference[string]{
+	v.Set(KeyReference[string]{
 		Value: "pizza",
-	}] = ValueReference[string]{
+	}, ValueReference[string]{
 		Value: "pie",
-	}
+	})
-	assert.Equal(t, "pie", FindItemInMap("pizza", v).Value)
+	assert.Equal(t, "pie", FindItemInOrderedMap("pizza", v).Value)
 }
 
-func TestFindItemInMap_WrongCase(t *testing.T) {
+func TestFindItemInOrderedMap_WrongCase(t *testing.T) {
-	v := make(map[KeyReference[string]]ValueReference[string])
+	v := orderedmap.New[KeyReference[string], ValueReference[string]]()
-	v[KeyReference[string]{
+	v.Set(KeyReference[string]{
 		Value: "pizza",
-	}] = ValueReference[string]{
+	}, ValueReference[string]{
 		Value: "pie",
-	}
+	})
-	assert.Equal(t, "pie", FindItemInMap("PIZZA", v).Value)
+	assert.Equal(t, "pie", FindItemInOrderedMap("PIZZA", v).Value)
 }
 
-func TestFindItemInMap_Error(t *testing.T) {
+func TestFindItemInOrderedMap_Error(t *testing.T) {
-	v := make(map[KeyReference[string]]ValueReference[string])
+	v := orderedmap.New[KeyReference[string], ValueReference[string]]()
-	v[KeyReference[string]{
+	v.Set(KeyReference[string]{
 		Value: "pizza",
-	}] = ValueReference[string]{
+	}, ValueReference[string]{
 		Value: "pie",
-	}
+	})
-	assert.Nil(t, FindItemInMap("nuggets", v))
+	assert.Nil(t, FindItemInOrderedMap("nuggets", v))
 }
 
 func TestLocateRefNode(t *testing.T) {
-
 	yml := `components:
   schemas:
     cake:
@@ -69,11 +70,9 @@ func TestLocateRefNode(t *testing.T) {
 
 	located, _, _ := LocateRefNode(cNode.Content[0], idx)
 	assert.NotNil(t, located)
-
 }
 
 func TestLocateRefNode_BadNode(t *testing.T) {
-
 	yml := `components:
   schemas:
     cake:
@@ -94,11 +93,9 @@ func TestLocateRefNode_BadNode(t *testing.T) {
 	// should both be empty.
 	assert.Nil(t, located)
 	assert.Nil(t, err)
-
 }
 
 func TestLocateRefNode_Path(t *testing.T) {
-
 	yml := `paths:
   /burger/time:
     description: hello`
@@ -115,11 +112,9 @@ func TestLocateRefNode_Path(t *testing.T) {
 
 	located, _, _ := LocateRefNode(cNode.Content[0], idx)
 	assert.NotNil(t, located)
-
 }
 
 func TestLocateRefNode_Path_NotFound(t *testing.T) {
-
 	yml := `paths:
   /burger/time:
     description: hello`
@@ -137,7 +132,6 @@ func TestLocateRefNode_Path_NotFound(t *testing.T) {
 	located, _, err := LocateRefNode(cNode.Content[0], idx)
 	assert.Nil(t, located)
 	assert.Error(t, err)
-
 }
 
 type pizza struct {
@@ -149,7 +143,6 @@ func (p *pizza) Build(_ context.Context, _, _ *yaml.Node, _ *index.SpecIndex) er
 }
 
 func TestExtractObject(t *testing.T) {
-
 	yml := `components:
   schemas:
     pizza:
@@ -173,7 +166,6 @@ func TestExtractObject(t *testing.T) {
 }
 
 func TestExtractObject_Ref(t *testing.T) {
-
 	yml := `components:
   schemas:
     pizza:
@@ -197,7 +189,6 @@ func TestExtractObject_Ref(t *testing.T) {
 }
 
 func TestExtractObject_DoubleRef(t *testing.T) {
-
 	yml := `components:
   schemas:
     cake:
@@ -282,7 +273,6 @@ func TestExtractObject_DoubleRef_Circular_Fail(t *testing.T) {
 }
 
 func TestExtractObject_DoubleRef_Circular_Direct(t *testing.T) {
-
 	yml := `components:
   schemas:
     loopy:
@@ -312,7 +302,6 @@ func TestExtractObject_DoubleRef_Circular_Direct(t *testing.T) {
 }
 
 func TestExtractObject_DoubleRef_Circular_Direct_Fail(t *testing.T) {
-
 	yml := `components:
   schemas:
     loopy:
@@ -338,7 +327,6 @@ func TestExtractObject_DoubleRef_Circular_Direct_Fail(t *testing.T) {
 
 	_, err := ExtractObject[*pizza](context.Background(), "tags", cNode.Content[0], idx)
 	assert.Error(t, err)
-
 }
 
 type test_borked struct {
@@ -374,7 +362,6 @@ func (t *test_Good) Build(_ context.Context, _, root *yaml.Node, idx *index.Spec
 }
 
 func TestExtractObject_BadLowLevelModel(t *testing.T) {
-
 	yml := `components:
   schemas:
    hey:`
@@ -391,11 +378,9 @@ func TestExtractObject_BadLowLevelModel(t *testing.T) {
 
 	_, err := ExtractObject[*test_noGood](context.Background(), "thing", &cNode, idx)
 	assert.Error(t, err)
-
 }
 
 func TestExtractObject_BadBuild(t *testing.T) {
-
 	yml := `components:
   schemas:
    hey:`
@@ -412,11 +397,9 @@ func TestExtractObject_BadBuild(t *testing.T) {
 
 	_, err := ExtractObject[*test_almostGood](context.Background(), "thing", &cNode, idx)
 	assert.Error(t, err)
-
 }
 
 func TestExtractObject_BadLabel(t *testing.T) {
-
 	yml := `components:
   schemas:
    hey:`
@@ -434,11 +417,9 @@ func TestExtractObject_BadLabel(t *testing.T) {
 	res, err := ExtractObject[*test_almostGood](context.Background(), "ding", &cNode, idx)
 	assert.Nil(t, res.Value)
 	assert.NoError(t, err)
-
 }
 
 func TestExtractObject_PathIsCircular(t *testing.T) {
-
 	// first we need an index.
 	yml := `paths:
   '/something/here':
@@ -467,11 +448,9 @@ func TestExtractObject_PathIsCircular(t *testing.T) {
 	res, err := ExtractObject[*test_Good](context.Background(), "thing", &rootNode, idx)
 	assert.NotNil(t, res.Value)
 	assert.Error(t, err) // circular error would have been thrown.
-
 }
 
 func TestExtractObject_PathIsCircular_IgnoreErrors(t *testing.T) {
-
 	// first we need an index.
 	yml := `paths:
   '/something/here':
@@ -503,11 +482,9 @@ func TestExtractObject_PathIsCircular_IgnoreErrors(t *testing.T) {
 	res, err := ExtractObject[*test_Good](context.Background(), "thing", &rootNode, idx)
 	assert.NotNil(t, res.Value)
 	assert.NoError(t, err) // circular error would have been thrown, but we're ignoring them.
-
 }
 
 func TestExtractObjectRaw(t *testing.T) {
-
 	yml := `components:
   schemas:
     pizza:
@@ -530,7 +507,6 @@ func TestExtractObjectRaw(t *testing.T) {
 }
 
 func TestExtractObjectRaw_With_Ref(t *testing.T) {
-
 	yml := `components:
   schemas:
     pizza:
@@ -555,7 +531,6 @@ func TestExtractObjectRaw_With_Ref(t *testing.T) {
 }
 
 func TestExtractObjectRaw_Ref_Circular(t *testing.T) {
-
 	yml := `components:
   schemas:
     pizza:
@@ -579,11 +554,9 @@ func TestExtractObjectRaw_Ref_Circular(t *testing.T) {
 	tag, err, _, _ := ExtractObjectRaw[*pizza](context.Background(), nil, cNode.Content[0], idx)
 	assert.Error(t, err)
 	assert.NotNil(t, tag)
-
 }
 
 func TestExtractObjectRaw_RefBroken(t *testing.T) {
-
 	yml := `components:
   schemas:
     pizza:
@@ -601,11 +574,9 @@ func TestExtractObjectRaw_RefBroken(t *testing.T) {
 	tag, err, _, _ := ExtractObjectRaw[*pizza](context.Background(), nil, cNode.Content[0], idx)
 	assert.Error(t, err)
 	assert.Nil(t, tag)
-
 }
 
 func TestExtractObjectRaw_Ref_NonBuildable(t *testing.T) {
-
 	yml := `components:
   schemas:
     pizza:
@@ -622,11 +593,9 @@ func TestExtractObjectRaw_Ref_NonBuildable(t *testing.T) {
 
 	_, err, _, _ := ExtractObjectRaw[*test_noGood](context.Background(), nil, cNode.Content[0], idx)
 	assert.Error(t, err)
-
 }
 
 func TestExtractObjectRaw_Ref_AlmostBuildable(t *testing.T) {
-
 	yml := `components:
   schemas:
     pizza:
@@ -643,11 +612,9 @@ func TestExtractObjectRaw_Ref_AlmostBuildable(t *testing.T) {
 
 	_, err, _, _ := ExtractObjectRaw[*test_almostGood](context.Background(), nil, cNode.Content[0], idx)
 	assert.Error(t, err)
-
 }
 
 func TestExtractArray(t *testing.T) {
-
 	yml := `components:
   schemas:
     pizza:
@@ -675,7 +642,6 @@ func TestExtractArray(t *testing.T) {
 }
 
 func TestExtractArray_Ref(t *testing.T) {
-
 	yml := `components:
   schemas:
     things:
@@ -702,7 +668,6 @@ func TestExtractArray_Ref(t *testing.T) {
 }
 
 func TestExtractArray_Ref_Unbuildable(t *testing.T) {
-
 	yml := `components:
   schemas:
     things:
@@ -726,7 +691,6 @@ func TestExtractArray_Ref_Unbuildable(t *testing.T) {
 }
 
 func TestExtractArray_Ref_Circular(t *testing.T) {
-
 	yml := `components:
   schemas:
     thongs:
@@ -754,7 +718,6 @@ func TestExtractArray_Ref_Circular(t *testing.T) {
 }
 
 func TestExtractArray_Ref_Bad(t *testing.T) {
-
 	yml := `components:
   schemas:
     thongs:
@@ -782,7 +745,6 @@ func TestExtractArray_Ref_Bad(t *testing.T) {
 }
 
 func TestExtractArray_Ref_Nested(t *testing.T) {
-
 	yml := `components:
   schemas:
     thongs:
@@ -811,7 +773,6 @@ func TestExtractArray_Ref_Nested(t *testing.T) {
 }
 
 func TestExtractArray_Ref_Nested_Circular(t *testing.T) {
-
 	yml := `components:
   schemas:
     thongs:
@@ -840,7 +801,6 @@ func TestExtractArray_Ref_Nested_Circular(t *testing.T) {
 }
 
 func TestExtractArray_Ref_Nested_BadRef(t *testing.T) {
-
 	yml := `components:
   schemas:
     thongs:
@@ -867,7 +827,6 @@ func TestExtractArray_Ref_Nested_BadRef(t *testing.T) {
 }
 
 func TestExtractArray_Ref_Nested_CircularFlat(t *testing.T) {
-
 	yml := `components:
   schemas:
     thongs:
@@ -896,7 +855,6 @@ func TestExtractArray_Ref_Nested_CircularFlat(t *testing.T) {
 }
 
 func TestExtractArray_BadBuild(t *testing.T) {
-
 	yml := `components:
   schemas:
     thongs:`
@@ -918,7 +876,6 @@ func TestExtractArray_BadBuild(t *testing.T) {
 }
 
 func TestExtractArray_BadRefPropsTupe(t *testing.T) {
-
 	yml := `components:
   parameters:
     cakes:
@@ -940,45 +897,7 @@ func TestExtractArray_BadRefPropsTupe(t *testing.T) {
 	assert.Len(t, things, 0)
 }
 
-func TestExtractExample_String(t *testing.T) {
-	yml := `hi`
-	var e yaml.Node
-	_ = yaml.Unmarshal([]byte(yml), &e)
-
-	exp := ExtractExample(e.Content[0], e.Content[0])
-	assert.NotNil(t, exp.Value)
-	assert.Equal(t, "hi", exp.Value)
-}
-func TestExtractExample_Map(t *testing.T) {
-	yml := `one: two`
-	var e yaml.Node
-	_ = yaml.Unmarshal([]byte(yml), &e)
-
-	exp := ExtractExample(e.Content[0], e.Content[0])
-	assert.NotNil(t, exp.Value)
-	if n, ok := exp.Value.(map[string]interface{}); ok {
-		assert.Equal(t, "two", n["one"])
-	} else {
-		panic("example unpacked incorrectly.")
-	}
-}
-
-func TestExtractExample_Array(t *testing.T) {
-	yml := `- hello`
-	var e yaml.Node
-	_ = yaml.Unmarshal([]byte(yml), &e)
-
-	exp := ExtractExample(e.Content[0], e.Content[0])
-	assert.NotNil(t, exp.Value)
-	if n, ok := exp.Value.([]interface{}); ok {
-		assert.Equal(t, "hello", n[0])
-	} else {
-		panic("example unpacked incorrectly.")
-	}
-}
-
 func TestExtractMapFlatNoLookup(t *testing.T) {
-
 	yml := `components:`
 
 	var idxNode yaml.Node
@@ -997,11 +916,9 @@ one:
 	things, err := ExtractMapNoLookup[*test_Good](context.Background(), cNode.Content[0], idx)
 	assert.NoError(t, err)
 	assert.Equal(t, 1, orderedmap.Len(things))
-
 }
 
 func TestExtractMap_NoLookupWithExtensions(t *testing.T) {
-
 	yml := `components:`
 
 	var idxNode yaml.Node
@@ -1031,7 +948,6 @@ one:
 }
 
 func TestExtractMap_NoLookupWithExtensions_UsingMerge(t *testing.T) {
-
 	yml := `components:`
 
 	var idxNode yaml.Node
@@ -1053,11 +969,9 @@ one:
 	things, err := ExtractMapNoLookupExtensions[*test_Good](context.Background(), cNode.Content[0], idx, true)
 	assert.NoError(t, err)
 	assert.Equal(t, 4, orderedmap.Len(things))
-
 }
 
 func TestExtractMap_NoLookupWithoutExtensions(t *testing.T) {
-
 	yml := `components:`
 
 	var idxNode yaml.Node
@@ -1083,7 +997,6 @@ one:
 }
 
 func TestExtractMap_WithExtensions(t *testing.T) {
-
 	yml := `components:`
 
 	var idxNode yaml.Node
@@ -1105,7 +1018,6 @@ one:
 }
 
 func TestExtractMap_WithoutExtensions(t *testing.T) {
-
 	yml := `components:`
 
 	var idxNode yaml.Node
@@ -1127,7 +1039,6 @@ one:
 }
 
 func TestExtractMapFlatNoLookup_Ref(t *testing.T) {
-
 	yml := `components:
   schemas:
     pizza:
@@ -1149,11 +1060,9 @@ one:
 	things, err := ExtractMapNoLookup[*test_Good](context.Background(), cNode.Content[0], idx)
 	assert.NoError(t, err)
 	assert.Equal(t, 1, orderedmap.Len(things))
-
 }
 
 func TestExtractMapFlatNoLookup_Ref_Bad(t *testing.T) {
-
 	yml := `components:
   schemas:
     pizza:
@@ -1175,11 +1084,9 @@ one:
 	things, err := ExtractMapNoLookup[*test_Good](context.Background(), cNode.Content[0], idx)
 	assert.Error(t, err)
 	assert.Zero(t, orderedmap.Len(things))
-
 }
 
 func TestExtractMapFlatNoLookup_Ref_Circular(t *testing.T) {
-
 	yml := `components:
   schemas:
     thongs:
@@ -1207,11 +1114,9 @@ one:
 	things, err := ExtractMapNoLookup[*test_Good](context.Background(), cNode.Content[0], idx)
 	assert.Error(t, err)
 	assert.Equal(t, 1, orderedmap.Len(things))
-
 }
 
 func TestExtractMapFlatNoLookup_Ref_BadBuild(t *testing.T) {
-
 	yml := `components:
   schemas:
     pizza:
@@ -1233,11 +1138,9 @@ hello:
 	things, err := ExtractMapNoLookup[*test_noGood](context.Background(), cNode.Content[0], idx)
 	assert.Error(t, err)
 	assert.Zero(t, orderedmap.Len(things))
-
 }
 
 func TestExtractMapFlatNoLookup_Ref_AlmostBuild(t *testing.T) {
-
 	yml := `components:
   schemas:
     pizza:
@@ -1259,11 +1162,9 @@ one:
 	things, err := ExtractMapNoLookup[*test_almostGood](context.Background(), cNode.Content[0], idx)
 	assert.Error(t, err)
 	assert.Zero(t, orderedmap.Len(things))
-
 }
 
 func TestExtractMapFlat(t *testing.T) {
-
 	yml := `components:`
 
 	var idxNode yaml.Node
@@ -1282,11 +1183,9 @@ one:
 	things, _, _, err := ExtractMap[*test_Good](context.Background(), "one", cNode.Content[0], idx)
 	assert.NoError(t, err)
 	assert.Equal(t, 1, orderedmap.Len(things))
-
 }
 
 func TestExtractMapFlat_Ref(t *testing.T) {
-
 	yml := `components:
   schemas:
     stank:
@@ -1313,11 +1212,9 @@ one:
 	for pair := orderedmap.First(things); pair != nil; pair = pair.Next() {
 		assert.Equal(t, 99, pair.Value().Value.AlmostWork.Value)
 	}
-
 }
 
 func TestExtractMapFlat_DoubleRef(t *testing.T) {
-
 	yml := `components:
   schemas:
     stank:
@@ -1346,7 +1243,6 @@ func TestExtractMapFlat_DoubleRef(t *testing.T) {
 }
 
 func TestExtractMapFlat_DoubleRef_Error(t *testing.T) {
-
 	yml := `components:
   schemas:
     stank:
@@ -1369,11 +1265,9 @@ func TestExtractMapFlat_DoubleRef_Error(t *testing.T) {
 	things, _, _, err := ExtractMap[*test_almostGood](context.Background(), "one", cNode.Content[0], idx)
 	assert.Error(t, err)
 	assert.Zero(t, orderedmap.Len(things))
-
 }
 
 func TestExtractMapFlat_DoubleRef_Error_NotFound(t *testing.T) {
-
 	yml := `components:
   schemas:
     stank:
@@ -1396,11 +1290,9 @@ func TestExtractMapFlat_DoubleRef_Error_NotFound(t *testing.T) {
 	things, _, _, err := ExtractMap[*test_almostGood](context.Background(), "one", cNode.Content[0], idx)
 	assert.Error(t, err)
 	assert.Zero(t, orderedmap.Len(things))
-
 }
 
 func TestExtractMapFlat_DoubleRef_Circles(t *testing.T) {
-
 	yml := `components:
   schemas:
     stonk:
@@ -1428,11 +1320,9 @@ func TestExtractMapFlat_DoubleRef_Circles(t *testing.T) {
 	things, _, _, err := ExtractMap[*test_Good](context.Background(), "one", cNode.Content[0], idx)
 	assert.Error(t, err)
 	assert.Equal(t, 1, orderedmap.Len(things))
-
 }
 
 func TestExtractMapFlat_Ref_Error(t *testing.T) {
-
 	yml := `components:
   schemas:
     stank:
@@ -1455,11 +1345,9 @@ func TestExtractMapFlat_Ref_Error(t *testing.T) {
 	things, _, _, err := ExtractMap[*test_almostGood](context.Background(), "one", cNode.Content[0], idx)
 	assert.Error(t, err)
 	assert.Zero(t, orderedmap.Len(things))
-
 }
 
 func TestExtractMapFlat_Ref_Circ_Error(t *testing.T) {
-
 	yml := `components:
   schemas:
     stink:
@@ -1488,7 +1376,6 @@ func TestExtractMapFlat_Ref_Circ_Error(t *testing.T) {
 }
 
 func TestExtractMapFlat_Ref_Nested_Circ_Error(t *testing.T) {
-
 	yml := `components:
   schemas:
     stink:
@@ -1518,7 +1405,6 @@ func TestExtractMapFlat_Ref_Nested_Circ_Error(t *testing.T) {
 }
 
 func TestExtractMapFlat_Ref_Nested_Error(t *testing.T) {
-
 	yml := `components:
   schemas:
     stink:
@@ -1544,7 +1430,6 @@ func TestExtractMapFlat_Ref_Nested_Error(t *testing.T) {
 }
 
 func TestExtractMapFlat_BadKey_Ref_Nested_Error(t *testing.T) {
-
 	yml := `components:
   schemas:
     stink:
@@ -1570,7 +1455,6 @@ func TestExtractMapFlat_BadKey_Ref_Nested_Error(t *testing.T) {
 }
 
 func TestExtractMapFlat_Ref_Bad(t *testing.T) {
-
 	yml := `components:
   schemas:
     stink:
@@ -1599,7 +1483,6 @@ func TestExtractMapFlat_Ref_Bad(t *testing.T) {
 }
 
 func TestExtractExtensions(t *testing.T) {
-
 	yml := `x-bing: ding
 x-bong: 1
 x-ling: true
@@ -1612,25 +1495,27 @@ x-tacos: [1,2,3]`
 	_ = yaml.Unmarshal([]byte(yml), &idxNode)
 
 	r := ExtractExtensions(idxNode.Content[0])
-	assert.Len(t, r, 6)
+	assert.Equal(t, 6, orderedmap.Len(r))
-	for i := range r {
+	for pair := orderedmap.First(r); pair != nil; pair = pair.Next() {
-		switch i.Value {
+		var v any
+		_ = pair.Value().Value.Decode(&v)
+
+		switch pair.Key().Value {
 		case "x-bing":
-			assert.Equal(t, "ding", r[i].Value)
+			assert.Equal(t, "ding", v)
 		case "x-bong":
-			assert.Equal(t, int64(1), r[i].Value)
+			assert.Equal(t, 1, v)
 		case "x-ling":
-			assert.Equal(t, true, r[i].Value)
+			assert.Equal(t, true, v)
 		case "x-long":
-			assert.Equal(t, 0.99, r[i].Value)
+			assert.Equal(t, 0.99, v)
 		case "x-fish":
-			if a, ok := r[i].Value.(map[string]interface{}); ok {
+			var m map[string]any
-				assert.Equal(t, "yeah", a["woo"])
+			err := pair.Value().Value.Decode(&m)
-			} else {
+			require.NoError(t, err)
-				panic("should not fail casting")
+			assert.Equal(t, "yeah", m["woo"])
-			}
 		case "x-tacos":
-			assert.Len(t, r[i].Value, 3)
+			assert.Len(t, v, 3)
 		}
 	}
 }
@@ -1650,8 +1535,8 @@ func (f test_fresh) Hash() [32]byte {
 	}
 	return sha256.Sum256([]byte(strings.Join(data, "|")))
 }
-func TestAreEqual(t *testing.T) {
 
+func TestAreEqual(t *testing.T) {
 	var hey *test_fresh
 
 	assert.True(t, AreEqual(test_fresh{val: "hello"}, test_fresh{val: "hello"}))
@@ -1664,7 +1549,6 @@ func TestAreEqual(t *testing.T) {
 }
 
 func TestGenerateHashString(t *testing.T) {
-
 	assert.Equal(t, "2cf24dba5fb0a30e26e83b2ac5b9e29e1b161e5c1fa7425e73043362938b9824",
 		GenerateHashString(test_fresh{val: "hello"}))
 
@@ -1676,46 +1560,39 @@ func TestGenerateHashString(t *testing.T) {
 
 	assert.Equal(t, "",
 		GenerateHashString(nil))
-
 }
 
 func TestGenerateHashString_Pointer(t *testing.T) {
-
 	val := true
 	assert.Equal(t, "b5bea41b6c623f7c09f1bf24dcae58ebab3c0cdd90ad966bc43a45b44867e12b",
 		GenerateHashString(test_fresh{thang: &val}))
 
 	assert.Equal(t, "b5bea41b6c623f7c09f1bf24dcae58ebab3c0cdd90ad966bc43a45b44867e12b",
 		GenerateHashString(&val))
-
 }
 
 func TestSetReference(t *testing.T) {
-
 	type testObj struct {
 		*Reference
 	}
 
 	n := testObj{Reference: &Reference{}}
-	SetReference(&n, "#/pigeon/street")
+	SetReference(&n, "#/pigeon/street", nil)
 
 	assert.Equal(t, "#/pigeon/street", n.GetReference())
-
 }
 
 func TestSetReference_nil(t *testing.T) {
-
 	type testObj struct {
 		*Reference
 	}
 
 	n := testObj{Reference: &Reference{}}
-	SetReference(nil, "#/pigeon/street")
+	SetReference(nil, "#/pigeon/street", nil)
 	assert.NotEqual(t, "#/pigeon/street", n.GetReference())
 }
 
 func TestLocateRefNode_CurrentPathKey_HttpLink(t *testing.T) {
-
 	no := yaml.Node{
 		Kind: yaml.MappingNode,
 		Content: []*yaml.Node{
@@ -1741,7 +1618,6 @@ func TestLocateRefNode_CurrentPathKey_HttpLink(t *testing.T) {
 }
 
 func TestLocateRefNode_CurrentPathKey_HttpLink_Local(t *testing.T) {
-
 	no := yaml.Node{
 		Kind: yaml.MappingNode,
 		Content: []*yaml.Node{
@@ -1767,7 +1643,6 @@ func TestLocateRefNode_CurrentPathKey_HttpLink_Local(t *testing.T) {
 }
 
 func TestLocateRefNode_CurrentPathKey_HttpLink_RemoteCtx(t *testing.T) {
-
 	no := yaml.Node{
 		Kind: yaml.MappingNode,
 		Content: []*yaml.Node{
@@ -1792,7 +1667,6 @@ func TestLocateRefNode_CurrentPathKey_HttpLink_RemoteCtx(t *testing.T) {
 }
 
 func TestLocateRefNode_CurrentPathKey_HttpLink_RemoteCtx_WithPath(t *testing.T) {
-
 	no := yaml.Node{
 		Kind: yaml.MappingNode,
 		Content: []*yaml.Node{
@@ -1817,7 +1691,6 @@ func TestLocateRefNode_CurrentPathKey_HttpLink_RemoteCtx_WithPath(t *testing.T)
 }
 
 func TestLocateRefNode_CurrentPathKey_Path_Link(t *testing.T) {
-
 	no := yaml.Node{
 		Kind: yaml.MappingNode,
 		Content: []*yaml.Node{
@@ -1842,7 +1715,6 @@ func TestLocateRefNode_CurrentPathKey_Path_Link(t *testing.T) {
 }
 
 func TestLocateRefNode_CurrentPathKey_Path_URL(t *testing.T) {
-
 	no := yaml.Node{
 		Kind: yaml.MappingNode,
 		Content: []*yaml.Node{
@@ -1869,7 +1741,6 @@ func TestLocateRefNode_CurrentPathKey_Path_URL(t *testing.T) {
 }
 
 func TestLocateRefNode_CurrentPathKey_DeeperPath_URL(t *testing.T) {
-
 	no := yaml.Node{
 		Kind: yaml.MappingNode,
 		Content: []*yaml.Node{
@@ -1896,7 +1767,6 @@ func TestLocateRefNode_CurrentPathKey_DeeperPath_URL(t *testing.T) {
 }
 
 func TestLocateRefNode_NoExplode(t *testing.T) {
-
 	no := yaml.Node{
 		Kind: yaml.MappingNode,
 		Content: []*yaml.Node{
@@ -1923,7 +1793,6 @@ func TestLocateRefNode_NoExplode(t *testing.T) {
 }
 
 func TestLocateRefNode_NoExplode_HTTP(t *testing.T) {
-
 	no := yaml.Node{
 		Kind: yaml.MappingNode,
 		Content: []*yaml.Node{
@@ -1951,7 +1820,6 @@ func TestLocateRefNode_NoExplode_HTTP(t *testing.T) {
 }
 
 func TestLocateRefNode_NoExplode_NoSpecPath(t *testing.T) {
-
 	no := yaml.Node{
 		Kind: yaml.MappingNode,
 		Content: []*yaml.Node{
@@ -1979,7 +1847,6 @@ func TestLocateRefNode_NoExplode_NoSpecPath(t *testing.T) {
 }
 
 func TestLocateRefNode_DoARealLookup(t *testing.T) {
-
 	no := yaml.Node{
 		Kind: yaml.MappingNode,
 		Content: []*yaml.Node{
@@ -2020,7 +1887,6 @@ func TestLocateRefNode_DoARealLookup(t *testing.T) {
 }
 
 func TestLocateRefEndNoRef_NoName(t *testing.T) {
-
 	r := &yaml.Node{Content: []*yaml.Node{{Kind: yaml.ScalarNode, Value: "$ref"}, {Kind: yaml.ScalarNode, Value: ""}}}
 	n, i, e, c := LocateRefEnd(nil, r, nil, 0)
 	assert.Nil(t, n)
@@ -2030,7 +1896,6 @@ func TestLocateRefEndNoRef_NoName(t *testing.T) {
 }
 
 func TestLocateRefEndNoRef(t *testing.T) {
-
 	r := &yaml.Node{Content: []*yaml.Node{{Kind: yaml.ScalarNode, Value: "$ref"}, {Kind: yaml.ScalarNode, Value: "cake"}}}
 	n, i, e, c := LocateRefEnd(context.Background(), r, index.NewSpecIndexWithConfig(r, index.CreateClosedAPIIndexConfig()), 0)
 	assert.Nil(t, n)
@@ -2049,7 +1914,6 @@ func TestLocateRefEnd_TooDeep(t *testing.T) {
 }
 
 func TestLocateRefEnd_Loop(t *testing.T) {
-
 	yml, _ := os.ReadFile("../../test_specs/first.yaml")
 	var bsn yaml.Node
 	_ = yaml.Unmarshal(yml, &bsn)
@@ -2094,7 +1958,6 @@ func TestLocateRefEnd_Loop(t *testing.T) {
 }
 
 func TestLocateRefEnd_Loop_WithResolve(t *testing.T) {
-
 	yml, _ := os.ReadFile("../../test_specs/first.yaml")
 	var bsn yaml.Node
 	_ = yaml.Unmarshal(yml, &bsn)
@@ -2139,7 +2002,6 @@ func TestLocateRefEnd_Loop_WithResolve(t *testing.T) {
 }
 
 func TestLocateRefEnd_Empty(t *testing.T) {
-
 	yml, _ := os.ReadFile("../../test_specs/first.yaml")
 	var bsn yaml.Node
 	_ = yaml.Unmarshal(yml, &bsn)
@@ -2184,7 +2046,6 @@ func TestLocateRefEnd_Empty(t *testing.T) {
 }
 
 func TestArray_NotRefNotArray(t *testing.T) {
-
 	yml := ``
 	var idxNode yaml.Node
 	mErr := yaml.Unmarshal([]byte(yml), &idxNode)
@@ -2201,5 +2062,4 @@ func TestArray_NotRefNotArray(t *testing.T) {
 	assert.Error(t, err)
 	assert.Equal(t, err.Error(), "array build failed, input is not an array, line 2, column 3")
 	assert.Len(t, things, 0)
-
 }

datamodel/low/model_builder.go

@@ -78,72 +78,63 @@ func SetField(field *reflect.Value, valueNode *yaml.Node, keyNode *yaml.Node) er
 
 	switch field.Type() {
 
-	case reflect.TypeOf(map[string]NodeReference[any]{}):
+	case reflect.TypeOf(orderedmap.New[string, NodeReference[*yaml.Node]]()):
+
 		if utils.IsNodeMap(valueNode) {
 			if field.CanSet() {
-				items := make(map[string]NodeReference[any])
+				items := orderedmap.New[string, NodeReference[*yaml.Node]]()
 				var currentLabel string
 				for i, sliceItem := range valueNode.Content {
 					if i%2 == 0 {
 						currentLabel = sliceItem.Value
 						continue
 					}
-					var decoded map[string]interface{}
+					items.Set(currentLabel, NodeReference[*yaml.Node]{
-					// I cannot think of a way to make this error out by this point.
+						Value:     sliceItem,
-					_ = sliceItem.Decode(&decoded)
-					items[currentLabel] = NodeReference[any]{
-						Value:     decoded,
 						ValueNode: sliceItem,
 						KeyNode:   valueNode,
-					}
+					})
 				}
 				field.Set(reflect.ValueOf(items))
 			}
 		}
 
-	case reflect.TypeOf(map[string]NodeReference[string]{}):
+	case reflect.TypeOf(orderedmap.New[string, NodeReference[string]]()):
 
 		if utils.IsNodeMap(valueNode) {
 			if field.CanSet() {
-				items := make(map[string]NodeReference[string])
+				items := orderedmap.New[string, NodeReference[string]]()
 				var currentLabel string
 				for i, sliceItem := range valueNode.Content {
 					if i%2 == 0 {
 						currentLabel = sliceItem.Value
 						continue
 					}
-					items[currentLabel] = NodeReference[string]{
+					items.Set(currentLabel, NodeReference[string]{
 						Value:     fmt.Sprintf("%v", sliceItem.Value),
 						ValueNode: sliceItem,
 						KeyNode:   valueNode,
-					}
+					})
 				}
 				field.Set(reflect.ValueOf(items))
 			}
 		}
 
-	case reflect.TypeOf(NodeReference[any]{}):
+	case reflect.TypeOf(NodeReference[*yaml.Node]{}):
 
-		var decoded interface{}
-		_ = valueNode.Decode(&decoded)
 		if field.CanSet() {
-			or := NodeReference[any]{Value: decoded, ValueNode: valueNode, KeyNode: keyNode}
+			or := NodeReference[*yaml.Node]{Value: valueNode, ValueNode: valueNode, KeyNode: keyNode}
 			field.Set(reflect.ValueOf(or))
 		}
 
-	case reflect.TypeOf([]NodeReference[any]{}):
+	case reflect.TypeOf([]NodeReference[*yaml.Node]{}):
 
 		if utils.IsNodeArray(valueNode) {
 			if field.CanSet() {
-				var items []NodeReference[any]
+				var items []NodeReference[*yaml.Node]
 				for _, sliceItem := range valueNode.Content {
-					var decoded map[string]interface{}
+					items = append(items, NodeReference[*yaml.Node]{
-					err := sliceItem.Decode(&decoded)
+						Value:     sliceItem,
-					if err != nil {
-						return err
-					}
-					items = append(items, NodeReference[any]{
-						Value:     decoded,
 						ValueNode: sliceItem,
 						KeyNode:   valueNode,
 					})
@@ -341,56 +332,8 @@ func SetField(field *reflect.Value, valueNode *yaml.Node, keyNode *yaml.Node) er
 		}
 
 	// helper for unpacking string maps.
-	case reflect.TypeOf(map[KeyReference[string]]ValueReference[string]{}):
+	case reflect.TypeOf(orderedmap.New[KeyReference[string], ValueReference[string]]()):
 
-		if utils.IsNodeMap(valueNode) {
-			if field.CanSet() {
-				items := make(map[KeyReference[string]]ValueReference[string])
-				var cf *yaml.Node
-				for i, sliceItem := range valueNode.Content {
-					if i%2 == 0 {
-						cf = sliceItem
-						continue
-					}
-					items[KeyReference[string]{
-						Value:   cf.Value,
-						KeyNode: cf,
-					}] = ValueReference[string]{
-						Value:     sliceItem.Value,
-						ValueNode: sliceItem,
-					}
-				}
-				field.Set(reflect.ValueOf(items))
-			}
-		}
-
-	case reflect.TypeOf(KeyReference[map[KeyReference[string]]ValueReference[string]]{}):
-
-		if utils.IsNodeMap(valueNode) {
-			if field.CanSet() {
-				items := make(map[KeyReference[string]]ValueReference[string])
-				var cf *yaml.Node
-				for i, sliceItem := range valueNode.Content {
-					if i%2 == 0 {
-						cf = sliceItem
-						continue
-					}
-					items[KeyReference[string]{
-						Value:   cf.Value,
-						KeyNode: cf,
-					}] = ValueReference[string]{
-						Value:     sliceItem.Value,
-						ValueNode: sliceItem,
-					}
-				}
-				ref := KeyReference[map[KeyReference[string]]ValueReference[string]]{
-					Value:   items,
-					KeyNode: keyNode,
-				}
-				field.Set(reflect.ValueOf(ref))
-			}
-		}
-	case reflect.TypeOf(NodeReference[orderedmap.Map[KeyReference[string], ValueReference[string]]]{}):
 		if utils.IsNodeMap(valueNode) {
 			if field.CanSet() {
 				items := orderedmap.New[KeyReference[string], ValueReference[string]]()
@@ -408,7 +351,55 @@ func SetField(field *reflect.Value, valueNode *yaml.Node, keyNode *yaml.Node) er
 						ValueNode: sliceItem,
 					})
 				}
-				ref := NodeReference[orderedmap.Map[KeyReference[string], ValueReference[string]]]{
+				field.Set(reflect.ValueOf(items))
+			}
+		}
+
+	case reflect.TypeOf(KeyReference[*orderedmap.Map[KeyReference[string], ValueReference[string]]]{}):
+
+		if utils.IsNodeMap(valueNode) {
+			if field.CanSet() {
+				items := orderedmap.New[KeyReference[string], ValueReference[string]]()
+				var cf *yaml.Node
+				for i, sliceItem := range valueNode.Content {
+					if i%2 == 0 {
+						cf = sliceItem
+						continue
+					}
+					items.Set(KeyReference[string]{
+						Value:   cf.Value,
+						KeyNode: cf,
+					}, ValueReference[string]{
+						Value:     sliceItem.Value,
+						ValueNode: sliceItem,
+					})
+				}
+				ref := KeyReference[*orderedmap.Map[KeyReference[string], ValueReference[string]]]{
+					Value:   items,
+					KeyNode: keyNode,
+				}
+				field.Set(reflect.ValueOf(ref))
+			}
+		}
+	case reflect.TypeOf(NodeReference[*orderedmap.Map[KeyReference[string], ValueReference[string]]]{}):
+		if utils.IsNodeMap(valueNode) {
+			if field.CanSet() {
+				items := orderedmap.New[KeyReference[string], ValueReference[string]]()
+				var cf *yaml.Node
+				for i, sliceItem := range valueNode.Content {
+					if i%2 == 0 {
+						cf = sliceItem
+						continue
+					}
+					items.Set(KeyReference[string]{
+						Value:   cf.Value,
+						KeyNode: cf,
+					}, ValueReference[string]{
+						Value:     sliceItem.Value,
+						ValueNode: sliceItem,
+					})
+				}
+				ref := NodeReference[*orderedmap.Map[KeyReference[string], ValueReference[string]]]{
 					Value:     items,
 					KeyNode:   keyNode,
 					ValueNode: valueNode,
@@ -436,34 +427,18 @@ func SetField(field *reflect.Value, valueNode *yaml.Node, keyNode *yaml.Node) er
 			}
 		}
 
-	case reflect.TypeOf(NodeReference[[]ValueReference[any]]{}):
+	case reflect.TypeOf(NodeReference[[]ValueReference[*yaml.Node]]{}):
 
 		if utils.IsNodeArray(valueNode) {
 			if field.CanSet() {
-				var items []ValueReference[any]
+				var items []ValueReference[*yaml.Node]
 				for _, sliceItem := range valueNode.Content {
-
+					items = append(items, ValueReference[*yaml.Node]{
-					var val any
+						Value:     sliceItem,
-					if utils.IsNodeIntValue(sliceItem) || utils.IsNodeFloatValue(sliceItem) {
-						if utils.IsNodeIntValue(sliceItem) {
-							val, _ = strconv.ParseInt(sliceItem.Value, 10, 64)
-						} else {
-							val, _ = strconv.ParseFloat(sliceItem.Value, 64)
-						}
-					}
-					if utils.IsNodeBoolValue(sliceItem) {
-						val, _ = strconv.ParseBool(sliceItem.Value)
-					}
-					if utils.IsNodeStringValue(sliceItem) {
-						val = sliceItem.Value
-					}
-
-					items = append(items, ValueReference[any]{
-						Value:     val,
 						ValueNode: sliceItem,
 					})
 				}
-				n := NodeReference[[]ValueReference[any]]{
+				n := NodeReference[[]ValueReference[*yaml.Node]]{
 					Value:     items,
 					KeyNode:   keyNode,
 					ValueNode: valueNode,

datamodel/low/model_builder_test.go

@@ -25,11 +25,11 @@ type hotdog struct {
 	Temps           []NodeReference[int]
 	HighTemps       []NodeReference[int64]
 	Buns            []NodeReference[bool]
-	UnknownElements NodeReference[any]
+	UnknownElements NodeReference[*yaml.Node]
-	LotsOfUnknowns  []NodeReference[any]
+	LotsOfUnknowns  []NodeReference[*yaml.Node]
-	Where           map[string]NodeReference[any]
+	Where           *orderedmap.Map[string, NodeReference[*yaml.Node]]
-	There           map[string]NodeReference[string]
+	There           *orderedmap.Map[string, NodeReference[string]]
-	AllTheThings    NodeReference[orderedmap.Map[KeyReference[string], ValueReference[string]]]
+	AllTheThings    NodeReference[*orderedmap.Map[KeyReference[string], ValueReference[string]]]
 }
 
 func TestBuildModel_Mismatch(t *testing.T) {
@@ -126,11 +126,15 @@ allTheThings:
 	assert.Equal(t, int64(7392837462032342), hd.MaxTempHigh.Value)
 	assert.Equal(t, 2, hd.Temps[1].Value)
 	assert.Equal(t, 27, hd.Temps[1].ValueNode.Line)
-	assert.Len(t, hd.UnknownElements.Value, 2)
+
+	var unknownElements map[string]any
+	_ = hd.UnknownElements.Value.Decode(&unknownElements)
+
+	assert.Len(t, unknownElements, 2)
 	assert.Len(t, hd.LotsOfUnknowns, 3)
-	assert.Len(t, hd.Where, 2)
+	assert.Equal(t, 2, orderedmap.Len(hd.Where))
-	assert.Len(t, hd.There, 2)
+	assert.Equal(t, 2, orderedmap.Len(hd.There))
-	assert.Equal(t, "bear", hd.There["care"].Value)
+	assert.Equal(t, "bear", hd.There.GetOrZero("care").Value)
 	assert.Equal(t, 324938249028.98234892374892374923874823974, hd.Mustard.Value)
 
 	allTheThings := hd.AllTheThings.Value
@@ -201,27 +205,9 @@ thing: yeah`
 	assert.Equal(t, "yeah", ins.Thing.Value)
 }
 
-func TestSetField_NodeRefAny_Error(t *testing.T) {
-	type internal struct {
-		Thing []NodeReference[any]
-	}
-
-	yml := `thing:
-  - 999
-  - false`
-
-	ins := new(internal)
-	var rootNode yaml.Node
-	mErr := yaml.Unmarshal([]byte(yml), &rootNode)
-	assert.NoError(t, mErr)
-
-	try := BuildModel(rootNode.Content[0], ins)
-	assert.Error(t, try)
-}
-
 func TestSetField_MapHelperWrapped(t *testing.T) {
 	type internal struct {
-		Thing KeyReference[map[KeyReference[string]]ValueReference[string]]
+		Thing KeyReference[*orderedmap.Map[KeyReference[string], ValueReference[string]]]
 	}
 
 	yml := `thing: 
@@ -236,12 +222,12 @@ func TestSetField_MapHelperWrapped(t *testing.T) {
 
 	try := BuildModel(rootNode.Content[0], ins)
 	assert.NoError(t, try)
-	assert.Len(t, ins.Thing.Value, 3)
+	assert.Equal(t, 3, orderedmap.Len(ins.Thing.Value))
 }
 
 func TestSetField_MapHelper(t *testing.T) {
 	type internal struct {
-		Thing map[KeyReference[string]]ValueReference[string]
+		Thing *orderedmap.Map[KeyReference[string], ValueReference[string]]
 	}
 
 	yml := `thing: 
@@ -256,7 +242,7 @@ func TestSetField_MapHelper(t *testing.T) {
 
 	try := BuildModel(rootNode.Content[0], ins)
 	assert.NoError(t, try)
-	assert.Len(t, ins.Thing, 3)
+	assert.Equal(t, 3, orderedmap.Len(ins.Thing))
 }
 
 func TestSetField_ArrayHelper(t *testing.T) {
@@ -281,7 +267,7 @@ func TestSetField_ArrayHelper(t *testing.T) {
 
 func TestSetField_Enum_Helper(t *testing.T) {
 	type internal struct {
-		Thing NodeReference[[]ValueReference[any]]
+		Thing NodeReference[[]ValueReference[*yaml.Node]]
 	}
 
 	yml := `thing: 
@@ -324,7 +310,7 @@ func TestSetField_Default_Helper(t *testing.T) {
 
 func TestHandleSlicesOfInts(t *testing.T) {
 	type internal struct {
-		Thing NodeReference[[]ValueReference[any]]
+		Thing NodeReference[[]ValueReference[*yaml.Node]]
 	}
 
 	yml := `thing:
@@ -338,13 +324,20 @@ func TestHandleSlicesOfInts(t *testing.T) {
 
 	try := BuildModel(rootNode.Content[0], ins)
 	assert.NoError(t, try)
-	assert.Equal(t, int64(5), ins.Thing.Value[0].Value)
+
-	assert.Equal(t, 1.234, ins.Thing.Value[1].Value)
+	var thing0 int64
+	_ = ins.Thing.GetValue()[0].Value.Decode(&thing0)
+
+	var thing1 float64
+	_ = ins.Thing.GetValue()[1].Value.Decode(&thing1)
+
+	assert.Equal(t, int64(5), thing0)
+	assert.Equal(t, 1.234, thing1)
 }
 
 func TestHandleSlicesOfBools(t *testing.T) {
 	type internal struct {
-		Thing NodeReference[[]ValueReference[any]]
+		Thing NodeReference[[]ValueReference[*yaml.Node]]
 	}
 
 	yml := `thing:
@@ -357,9 +350,16 @@ func TestHandleSlicesOfBools(t *testing.T) {
 	assert.NoError(t, mErr)
 
 	try := BuildModel(rootNode.Content[0], ins)
+
+	var thing0 bool
+	_ = ins.Thing.GetValue()[0].Value.Decode(&thing0)
+
+	var thing1 bool
+	_ = ins.Thing.GetValue()[1].Value.Decode(&thing1)
+
 	assert.NoError(t, try)
-	assert.Equal(t, true, ins.Thing.Value[0].Value)
+	assert.Equal(t, true, thing0)
-	assert.Equal(t, false, ins.Thing.Value[1].Value)
+	assert.Equal(t, false, thing1)
 }
 
 func TestSetField_Ignore(t *testing.T) {
@@ -387,7 +387,7 @@ func TestSetField_Ignore(t *testing.T) {
 
 func TestBuildModelAsync(t *testing.T) {
 	type internal struct {
-		Thing KeyReference[map[KeyReference[string]]ValueReference[string]]
+		Thing KeyReference[*orderedmap.Map[KeyReference[string], ValueReference[string]]]
 	}
 
 	yml := `thing: 
@@ -405,28 +405,5 @@ func TestBuildModelAsync(t *testing.T) {
 	wg.Add(1)
 	BuildModelAsync(rootNode.Content[0], ins, &wg, &errors)
 	wg.Wait()
-	assert.Len(t, ins.Thing.Value, 3)
+	assert.Equal(t, 3, orderedmap.Len(ins.Thing.Value))
-}
-
-func TestBuildModelAsync_Error(t *testing.T) {
-	type internal struct {
-		Thing []NodeReference[any]
-	}
-
-	yml := `thing:
-  - 999
-  - false`
-
-	ins := new(internal)
-	var rootNode yaml.Node
-	mErr := yaml.Unmarshal([]byte(yml), &rootNode)
-	assert.NoError(t, mErr)
-
-	var wg sync.WaitGroup
-	var errors []error
-	wg.Add(1)
-	BuildModelAsync(rootNode.Content[0], ins, &wg, &errors)
-	wg.Wait()
-	assert.Len(t, errors, 1)
-	assert.Len(t, ins.Thing, 0)
 }

datamodel/low/model_interfaces.go

@@ -3,6 +3,11 @@
 
 package low
 
+import (
+	"github.com/pb33f/libopenapi/orderedmap"
+	"gopkg.in/yaml.v3"
+)
+
 type SharedParameters interface {
 	HasDescription
 	Hash() [32]byte
@@ -30,7 +35,7 @@ type SwaggerParameter interface {
 	GetType() *NodeReference[string]
 	GetFormat() *NodeReference[string]
 	GetCollectionFormat() *NodeReference[string]
-	GetDefault() *NodeReference[any]
+	GetDefault() *NodeReference[*yaml.Node]
 	GetMaximum() *NodeReference[int]
 	GetExclusiveMaximum() *NodeReference[bool]
 	GetMinimum() *NodeReference[int]
@@ -41,7 +46,7 @@ type SwaggerParameter interface {
 	GetMaxItems() *NodeReference[int]
 	GetMinItems() *NodeReference[int]
 	GetUniqueItems() *NodeReference[bool]
-	GetEnum() *NodeReference[[]ValueReference[any]]
+	GetEnum() *NodeReference[[]ValueReference[*yaml.Node]]
 	GetMultipleOf() *NodeReference[int]
 }
 
@@ -51,7 +56,7 @@ type SwaggerHeader interface {
 	GetType() *NodeReference[string]
 	GetFormat() *NodeReference[string]
 	GetCollectionFormat() *NodeReference[string]
-	GetDefault() *NodeReference[any]
+	GetDefault() *NodeReference[*yaml.Node]
 	GetMaximum() *NodeReference[int]
 	GetExclusiveMaximum() *NodeReference[bool]
 	GetMinimum() *NodeReference[int]
@@ -62,7 +67,7 @@ type SwaggerHeader interface {
 	GetMaxItems() *NodeReference[int]
 	GetMinItems() *NodeReference[int]
 	GetUniqueItems() *NodeReference[bool]
-	GetEnum() *NodeReference[[]ValueReference[any]]
+	GetEnum() *NodeReference[[]ValueReference[*yaml.Node]]
 	GetMultipleOf() *NodeReference[int]
 	GetItems() *NodeReference[any] // requires cast.
 }
@@ -74,7 +79,7 @@ type OpenAPIHeader interface {
 	GetStyle() *NodeReference[string]
 	GetAllowReserved() *NodeReference[bool]
 	GetExplode() *NodeReference[bool]
-	GetExample() *NodeReference[any]
+	GetExample() *NodeReference[*yaml.Node]
 	GetRequired() *NodeReference[bool]
 	GetAllowEmptyValue() *NodeReference[bool]
 	GetSchema() *NodeReference[any]   // requires cast.
@@ -88,13 +93,12 @@ type OpenAPIParameter interface {
 	GetStyle() *NodeReference[string]
 	GetAllowReserved() *NodeReference[bool]
 	GetExplode() *NodeReference[bool]
-	GetExample() *NodeReference[any]
+	GetExample() *NodeReference[*yaml.Node]
 	GetExamples() *NodeReference[any] // requires cast.
 	GetContent() *NodeReference[any]  // requires cast.
 }
 
-//TODO: this needs to be fixed, move returns to pointers.
+// TODO: this needs to be fixed, move returns to pointers.
-
 type SharedOperations interface {
 	GetOperationId() NodeReference[string]
 	GetExternalDocs() NodeReference[any]
@@ -102,7 +106,7 @@ type SharedOperations interface {
 	GetTags() NodeReference[[]ValueReference[string]]
 	GetSummary() NodeReference[string]
 	GetDeprecated() NodeReference[bool]
-	GetExtensions() map[KeyReference[string]]ValueReference[any]
+	GetExtensions() *orderedmap.Map[KeyReference[string], ValueReference[*yaml.Node]]
 	GetResponses() NodeReference[any]  // requires cast.
 	GetParameters() NodeReference[any] // requires cast.
 	GetSecurity() NodeReference[any]   // requires cast.
@@ -117,6 +121,6 @@ type SwaggerOperations interface {
 
 type OpenAPIOperations interface {
 	SharedOperations
-	GetCallbacks() NodeReference[map[KeyReference[string]]ValueReference[any]] // requires cast
+	GetCallbacks() NodeReference[*orderedmap.Map[KeyReference[string], ValueReference[any]]] // requires cast
 	GetServers() NodeReference[any]                                                          // requires cast.
 }

datamodel/low/reference.go

@@ -3,7 +3,9 @@ package low
 import (
 	"context"
 	"fmt"
+
 	"github.com/pb33f/libopenapi/index"
+	"github.com/pb33f/libopenapi/orderedmap"
 	"github.com/pb33f/libopenapi/utils"
 	"gopkg.in/yaml.v3"
 )
@@ -13,25 +15,35 @@ const (
 )
 
 type Reference struct {
-	Reference string `json:"-" yaml:"-"`
+	refNode   *yaml.Node
+	reference string
 }
 
-func (r *Reference) GetReference() string {
+func (r Reference) GetReference() string {
-	return r.Reference
+	return r.reference
 }
 
-func (r *Reference) IsReference() bool {
+func (r Reference) IsReference() bool {
-	return r.Reference != ""
+	return r.reference != ""
 }
 
-func (r *Reference) SetReference(ref string) {
+func (r Reference) GetReferenceNode() *yaml.Node {
-	r.Reference = ref
+	return r.refNode
+}
+
+func (r *Reference) SetReference(ref string, node *yaml.Node) {
+	r.reference = ref
+	r.refNode = node
 }
 
 type IsReferenced interface {
 	IsReference() bool
 	GetReference() string
-	SetReference(string)
+	GetReferenceNode() *yaml.Node
+}
+
+type SetReferencer interface {
+	SetReference(ref string, node *yaml.Node)
 }
 
 // Buildable is an interface for any struct that can be 'built out'. This means that a struct can accept
@@ -63,16 +75,14 @@ type Hashable interface {
 
 // HasExtensions is implemented by any object that exposes extensions
 type HasExtensions[T any] interface {
-
 	// GetExtensions returns generic low level extensions
-	GetExtensions() map[KeyReference[string]]ValueReference[any]
+	GetExtensions() *orderedmap.Map[KeyReference[string], ValueReference[*yaml.Node]]
 }
 
 // HasExtensionsUntyped is implemented by any object that exposes extensions
 type HasExtensionsUntyped interface {
-
 	// GetExtensions returns generic low level extensions
-	GetExtensions() map[KeyReference[string]]ValueReference[any]
+	GetExtensions() *orderedmap.Map[KeyReference[string], ValueReference[*yaml.Node]]
 }
 
 // HasValue is implemented by NodeReference and ValueReference to return the yaml.Node backing the value.
@@ -98,6 +108,7 @@ type HasKeyNode interface {
 // a key yaml.Node that points to the key node that contains the value node, and the value node that contains
 // the actual value.
 type NodeReference[T any] struct {
+	Reference
 
 	// The value being referenced
 	Value T
@@ -108,19 +119,14 @@ type NodeReference[T any] struct {
 	// The yaml.Node that is the key, that contains the value.
 	KeyNode *yaml.Node
 
-	// Is this value actually a reference in the original tree?
-	ReferenceNode bool
-
-	// If HasReference is true, then Reference contains the original $ref value.
-	Reference string
-
 	Context context.Context
 }
 
+var _ HasValueNodeUntyped = &NodeReference[any]{}
+
 // KeyReference is a low-level container for key nodes holding a Value of type T. A KeyNode is a pointer to the
 // yaml.Node that holds a key to a value.
 type KeyReference[T any] struct {
-
 	// The value being referenced.
 	Value T
 
@@ -131,18 +137,13 @@ type KeyReference[T any] struct {
 // ValueReference is a low-level container for value nodes that hold a Value of type T. A ValueNode is a pointer
 // to the yaml.Node that holds the value.
 type ValueReference[T any] struct {
+	Reference
 
 	// The value being referenced.
 	Value T
 
 	// The yaml.Node that holds the referenced value
 	ValueNode *yaml.Node
-
-	// Is this value actually a reference in the original tree?
-	ReferenceNode bool
-
-	// If HasReference is true, then Reference contains the original $ref value.
-	Reference string
 }
 
 // IsEmpty will return true if this reference has no key or value nodes assigned (it's been ignored)
@@ -158,32 +159,6 @@ func (n NodeReference[T]) NodeLineNumber() int {
 	}
 }
 
-func (n NodeReference[T]) GetReference() string {
-	return n.Reference
-}
-
-func (n NodeReference[T]) SetReference(ref string) {
-	n.Reference = ref
-}
-
-// IsReference will return true if the key node contains a $ref key.
-func (n NodeReference[T]) IsReference() bool {
-	if n.ReferenceNode {
-		return true
-	}
-	if n.KeyNode != nil {
-		for k := range n.KeyNode.Content {
-			if k%2 == 0 {
-				if n.KeyNode.Content[k].Value == "$ref" {
-					n.ReferenceNode = true
-					return true
-				}
-			}
-		}
-	}
-	return false
-}
-
 // GenerateMapKey will return a string based on the line and column number of the node, e.g. 33:56 for line 33, col 56.
 func (n NodeReference[T]) GenerateMapKey() string {
 	return fmt.Sprintf("%d:%d", n.ValueNode.Line, n.ValueNode.Column)
@@ -251,36 +226,19 @@ func (n ValueReference[T]) GetValueUntyped() any {
 	return n.Value
 }
 
-func (n ValueReference[T]) GetReference() string {
-	return n.Reference
-}
-
-func (n ValueReference[T]) SetReference(ref string) {
-	n.Reference = ref
-}
-
-// IsReference will return true if the key node contains a $ref
-func (n ValueReference[T]) IsReference() bool {
-	if n.Reference != "" {
-		return true
-	}
-	return false
-}
-
 func (n ValueReference[T]) MarshalYAML() (interface{}, error) {
 	if n.IsReference() {
-		nodes := make([]*yaml.Node, 2)
+		return n.GetReferenceNode(), nil
-		nodes[0] = utils.CreateStringNode("$ref")
-		nodes[1] = utils.CreateStringNode(n.Reference)
-		m := utils.CreateEmptyMapNode()
-		m.Content = nodes
-		return m, nil
 	}
 	var h yaml.Node
 	e := n.ValueNode.Decode(&h)
 	return h, e
 }
 
+func (n KeyReference[T]) MarshalYAML() (interface{}, error) {
+	return n.KeyNode, nil
+}
+
 // IsEmpty will return true if this reference has no key or value nodes assigned (it's been ignored)
 func (n KeyReference[T]) IsEmpty() bool {
 	return n.KeyNode == nil

datamodel/low/reference_test.go

@@ -6,10 +6,11 @@ package low
 import (
 	"crypto/sha256"
 	"fmt"
-	"github.com/pb33f/libopenapi/utils"
 	"strings"
 	"testing"
 
+	"github.com/pb33f/libopenapi/utils"
+
 	"github.com/pb33f/libopenapi/index"
 	"github.com/stretchr/testify/assert"
 	"gopkg.in/yaml.v3"
@@ -99,7 +100,6 @@ func TestKeyReference_GenerateMapKey(t *testing.T) {
 }
 
 func TestIsCircular_LookupFromJourney(t *testing.T) {
-
 	yml := `components:
   schemas:
     Something:
@@ -136,7 +136,6 @@ func TestIsCircular_LookupFromJourney(t *testing.T) {
 }
 
 func TestIsCircular_LookupFromJourney_Optional(t *testing.T) {
-
 	yml := `components:
   schemas:
     Something:
@@ -237,7 +236,6 @@ func TestIsCircular_LookupFromLoopPoint_Optional(t *testing.T) {
 }
 
 func TestIsCircular_FromRefLookup(t *testing.T) {
-
 	yml := `components:
   schemas:
     NotCircle:
@@ -558,21 +556,17 @@ func TestGetCircularReferenceResult_NothingFound(t *testing.T) {
 func TestHashToString(t *testing.T) {
 	assert.Equal(t, "5994471abb01112afcc18159f6cc74b4f511b99806da59b3caf5a9c173cacfc5",
 		HashToString(sha256.Sum256([]byte("12345"))))
-
 }
 
 func TestReference_IsReference(t *testing.T) {
-	ref := Reference{
+	ref := Reference{}
-		Reference: "#/components/schemas/SomeSchema",
+	ref.SetReference("#/components/schemas/SomeSchema", nil)
-	}
 	assert.True(t, ref.IsReference())
-
 }
 
 func TestNodeReference_NodeLineNumber(t *testing.T) {
-
 	n := utils.CreateStringNode("pizza")
-	nr := NodeReference[string]{
+	nr := &NodeReference[string]{
 		Value:     "pizza",
 		ValueNode: n,
 	}
@@ -582,51 +576,36 @@ func TestNodeReference_NodeLineNumber(t *testing.T) {
 }
 
 func TestNodeReference_NodeLineNumberEmpty(t *testing.T) {
-
+	nr := &NodeReference[string]{
-	nr := NodeReference[string]{
 		Value: "pizza",
 	}
 	assert.Equal(t, 0, nr.NodeLineNumber())
 }
 
 func TestNodeReference_GetReference(t *testing.T) {
-
+	nr := &NodeReference[string]{}
-	nr := NodeReference[string]{
+	nr.SetReference("#/happy/sunday", nil)
-		Reference: "#/happy/sunday",
-	}
 	assert.Equal(t, "#/happy/sunday", nr.GetReference())
 }
 
 func TestNodeReference_SetReference(t *testing.T) {
-
+	nr := &NodeReference[string]{}
-	nr := NodeReference[string]{}
+	nr.SetReference("#/happy/sunday", nil)
-	nr.SetReference("#/happy/sunday")
-}
-
-func TestNodeReference_IsReference(t *testing.T) {
-
-	nr := NodeReference[string]{
-		ReferenceNode: true,
-	}
-	assert.True(t, nr.IsReference())
 }
 
 func TestNodeReference_GetKeyNode(t *testing.T) {
-
+	nr := &NodeReference[string]{
-	nr := NodeReference[string]{
 		KeyNode: utils.CreateStringNode("pizza"),
 	}
 	assert.Equal(t, "pizza", nr.GetKeyNode().Value)
-
 }
 
 func TestNodeReference_GetValueUntyped(t *testing.T) {
-
 	type anything struct {
 		thing string
 	}
 
-	nr := NodeReference[any]{
+	nr := &NodeReference[any]{
 		Value: anything{thing: "ding"},
 	}
 
@@ -634,7 +613,6 @@ func TestNodeReference_GetValueUntyped(t *testing.T) {
 }
 
 func TestValueReference_NodeLineNumber(t *testing.T) {
-
 	n := utils.CreateStringNode("pizza")
 	nr := ValueReference[string]{
 		Value:     "pizza",
@@ -646,7 +624,6 @@ func TestValueReference_NodeLineNumber(t *testing.T) {
 }
 
 func TestValueReference_NodeLineNumber_Nil(t *testing.T) {
-
 	nr := ValueReference[string]{
 		Value: "pizza",
 	}
@@ -655,21 +632,12 @@ func TestValueReference_NodeLineNumber_Nil(t *testing.T) {
 }
 
 func TestValueReference_GetReference(t *testing.T) {
-
+	nr := ValueReference[string]{}
-	nr := ValueReference[string]{
+	nr.SetReference("#/happy/sunday", nil)
-		Reference: "#/happy/sunday",
-	}
 	assert.Equal(t, "#/happy/sunday", nr.GetReference())
 }
 
-func TestValueReference_SetReference(t *testing.T) {
-
-	nr := ValueReference[string]{}
-	nr.SetReference("#/happy/sunday")
-}
-
 func TestValueReference_GetValueUntyped(t *testing.T) {
-
 	type anything struct {
 		thing string
 	}
@@ -681,28 +649,15 @@ func TestValueReference_GetValueUntyped(t *testing.T) {
 	assert.Equal(t, "{ding}", fmt.Sprint(nr.GetValueUntyped()))
 }
 
-func TestValueReference_IsReference(t *testing.T) {
-
-	nr := NodeReference[string]{
-		ReferenceNode: true,
-	}
-	assert.True(t, nr.IsReference())
-}
-
 func TestValueReference_MarshalYAML_Ref(t *testing.T) {
-
+	nr := ValueReference[string]{}
-	nr := ValueReference[string]{
+	nr.SetReference("#/burgers/beer", nil)
-		ReferenceNode: true,
-		Reference:     "#/burgers/beer",
-	}
 
 	data, _ := yaml.Marshal(nr)
 	assert.Equal(t, `$ref: '#/burgers/beer'`, strings.TrimSpace(string(data)))
-
 }
 
 func TestValueReference_MarshalYAML(t *testing.T) {
-
 	v := map[string]interface{}{
 		"beer": "burger",
 		"wine": "cheese",
@@ -725,7 +680,6 @@ wine: cheese`
 }
 
 func TestKeyReference_GetValueUntyped(t *testing.T) {
-
 	type anything struct {
 		thing string
 	}

datamodel/low/v2/definitions.go

@@ -6,9 +6,10 @@ package v2
 import (
 	"context"
 	"crypto/sha256"
-	"sort"
 	"strings"
+	"sync"
 
+	"github.com/pb33f/libopenapi/datamodel"
 	"github.com/pb33f/libopenapi/datamodel/low"
 	"github.com/pb33f/libopenapi/datamodel/low/base"
 	"github.com/pb33f/libopenapi/index"
@@ -23,7 +24,7 @@ import (
 // referenced to the ones defined here. It does not define global operation parameters
 //   - https://swagger.io/specification/v2/#parametersDefinitionsObject
 type ParameterDefinitions struct {
-	Definitions orderedmap.Map[low.KeyReference[string], low.ValueReference[*Parameter]]
+	Definitions *orderedmap.Map[low.KeyReference[string], low.ValueReference[*Parameter]]
 }
 
 // ResponsesDefinitions is a low-level representation of a Swagger / OpenAPI 2 Responses Definitions object.
@@ -32,7 +33,7 @@ type ParameterDefinitions struct {
 // referenced to the ones defined here. It does not define global operation responses
 //   - https://swagger.io/specification/v2/#responsesDefinitionsObject
 type ResponsesDefinitions struct {
-	Definitions orderedmap.Map[low.KeyReference[string], low.ValueReference[*Response]]
+	Definitions *orderedmap.Map[low.KeyReference[string], low.ValueReference[*Response]]
 }
 
 // SecurityDefinitions is a low-level representation of a Swagger / OpenAPI 2 Security Definitions object.
@@ -41,7 +42,7 @@ type ResponsesDefinitions struct {
 // schemes on the operations and only serves to provide the relevant details for each scheme
 //   - https://swagger.io/specification/v2/#securityDefinitionsObject
 type SecurityDefinitions struct {
-	Definitions orderedmap.Map[low.KeyReference[string], low.ValueReference[*SecurityScheme]]
+	Definitions *orderedmap.Map[low.KeyReference[string], low.ValueReference[*SecurityScheme]]
 }
 
 // Definitions is a low-level representation of a Swagger / OpenAPI 2 Definitions object
@@ -50,7 +51,7 @@ type SecurityDefinitions struct {
 // arrays or models.
 //   - https://swagger.io/specification/v2/#definitionsObject
 type Definitions struct {
-	Schemas orderedmap.Map[low.KeyReference[string], low.ValueReference[*base.SchemaProxy]]
+	Schemas *orderedmap.Map[low.KeyReference[string], low.ValueReference[*base.SchemaProxy]]
 }
 
 // FindSchema will attempt to locate a base.SchemaProxy instance using a name.
@@ -77,46 +78,79 @@ func (s *SecurityDefinitions) FindSecurityDefinition(securityDef string) *low.Va
 func (d *Definitions) Build(ctx context.Context, _, root *yaml.Node, idx *index.SpecIndex) error {
 	root = utils.NodeAlias(root)
 	utils.CheckForMergeNodes(root)
-	// TODO: Refactor with orderedmap.TranslatePipeline.
+	type buildInput struct {
-	errorChan := make(chan error)
+		label *yaml.Node
-	resultChan := make(chan definitionResult[*base.SchemaProxy])
+		value *yaml.Node
-	var defLabel *yaml.Node
+	}
-	totalDefinitions := 0
+	results := orderedmap.New[low.KeyReference[string], low.ValueReference[*base.SchemaProxy]]()
-	var buildFunc = func(label *yaml.Node, value *yaml.Node, idx *index.SpecIndex,
+	in := make(chan buildInput)
-		r chan definitionResult[*base.SchemaProxy], e chan error) {
+	out := make(chan definitionResult[*base.SchemaProxy])
+	done := make(chan struct{})
+	var wg sync.WaitGroup
+	wg.Add(2) // input and output goroutines.
 
-		obj, err, _, rv := low.ExtractObjectRaw[*base.SchemaProxy](ctx, label, value, idx)
+	// TranslatePipeline input.
-		if err != nil {
+	go func() {
-			e <- err
+		defer func() {
-		}
+			close(in)
-		r <- definitionResult[*base.SchemaProxy]{k: label, v: low.ValueReference[*base.SchemaProxy]{
+			wg.Done()
-			Value: obj, ValueNode: value, Reference: rv,
+		}()
-		}}
+		var label *yaml.Node
-	}
+		for i, value := range root.Content {
-	for i := range root.Content {
 			if i%2 == 0 {
-			defLabel = root.Content[i]
+				label = value
 				continue
 			}
-		totalDefinitions++
+
-		go buildFunc(defLabel, root.Content[i], idx, resultChan, errorChan)
+			select {
+			case in <- buildInput{
+				label: label,
+				value: value,
+			}:
+			case <-done:
+				return
+			}
+		}
+	}()
+
+	// TranslatePipeline output.
+	go func() {
+		for {
+			result, ok := <-out
+			if !ok {
+				break
 			}
 
-	completedDefs := 0
-	results := orderedmap.New[low.KeyReference[string], low.ValueReference[*base.SchemaProxy]]()
-	for completedDefs < totalDefinitions {
-		select {
-		case err := <-errorChan:
-			return err
-		case sch := <-resultChan:
-			completedDefs++
 			key := low.KeyReference[string]{
-				Value:   sch.k.Value,
+				Value:   result.k.Value,
-				KeyNode: sch.k,
+				KeyNode: result.k,
 			}
-			results.Set(key, sch.v)
+			results.Set(key, result.v)
 		}
+		close(done)
+		wg.Done()
+	}()
+
+	translateFunc := func(value buildInput) (definitionResult[*base.SchemaProxy], error) {
+		obj, err, _, rv := low.ExtractObjectRaw[*base.SchemaProxy](ctx, value.label, value.value, idx)
+		if err != nil {
+			return definitionResult[*base.SchemaProxy]{}, err
 		}
+
+		v := low.ValueReference[*base.SchemaProxy]{
+			Value: obj, ValueNode: value.value,
+		}
+		v.SetReference(rv, value.value)
+
+		return definitionResult[*base.SchemaProxy]{k: value.label, v: v}, nil
+	}
+
+	err := datamodel.TranslatePipeline[buildInput, definitionResult[*base.SchemaProxy]](in, out, translateFunc)
+	wg.Wait()
+	if err != nil {
+		return err
+	}
+
 	d.Schemas = results
 	return nil
 }
@@ -124,15 +158,8 @@ func (d *Definitions) Build(ctx context.Context, _, root *yaml.Node, idx *index.
 // Hash will return a consistent SHA256 Hash of the Definitions object
 func (d *Definitions) Hash() [32]byte {
 	var f []string
-	keys := make([]string, orderedmap.Len(d.Schemas))
+	for pair := orderedmap.First(orderedmap.SortAlpha(d.Schemas)); pair != nil; pair = pair.Next() {
-	z := 0
+		f = append(f, low.GenerateHashString(d.FindSchema(pair.Key().Value).Value))
-	for pair := orderedmap.First(d.Schemas); pair != nil; pair = pair.Next() {
-		keys[z] = pair.Key().Value
-		z++
-	}
-	sort.Strings(keys)
-	for k := range keys {
-		f = append(f, low.GenerateHashString(d.FindSchema(keys[k]).Value))
 	}
 	return sha256.Sum256([]byte(strings.Join(f, "|")))
 }
@@ -143,15 +170,21 @@ func (pd *ParameterDefinitions) Build(ctx context.Context, _, root *yaml.Node, i
 	resultChan := make(chan definitionResult[*Parameter])
 	var defLabel *yaml.Node
 	totalDefinitions := 0
-	var buildFunc = func(label *yaml.Node, value *yaml.Node, idx *index.SpecIndex,
+	buildFunc := func(label *yaml.Node, value *yaml.Node, idx *index.SpecIndex,
-		r chan definitionResult[*Parameter], e chan error) {
+		r chan definitionResult[*Parameter], e chan error,
-
+	) {
 		obj, err, _, rv := low.ExtractObjectRaw[*Parameter](ctx, label, value, idx)
 		if err != nil {
 			e <- err
 		}
-		r <- definitionResult[*Parameter]{k: label, v: low.ValueReference[*Parameter]{Value: obj,
+
-			ValueNode: value, Reference: rv}}
+		v := low.ValueReference[*Parameter]{
+			Value:     obj,
+			ValueNode: value,
+		}
+		v.SetReference(rv, value)
+
+		r <- definitionResult[*Parameter]{k: label, v: v}
 	}
 	for i := range root.Content {
 		if i%2 == 0 {
@@ -193,15 +226,21 @@ func (r *ResponsesDefinitions) Build(ctx context.Context, _, root *yaml.Node, id
 	resultChan := make(chan definitionResult[*Response])
 	var defLabel *yaml.Node
 	totalDefinitions := 0
-	var buildFunc = func(label *yaml.Node, value *yaml.Node, idx *index.SpecIndex,
+	buildFunc := func(label *yaml.Node, value *yaml.Node, idx *index.SpecIndex,
-		r chan definitionResult[*Response], e chan error) {
+		r chan definitionResult[*Response], e chan error,
-
+	) {
 		obj, err, _, rv := low.ExtractObjectRaw[*Response](ctx, label, value, idx)
 		if err != nil {
 			e <- err
 		}
-		r <- definitionResult[*Response]{k: label, v: low.ValueReference[*Response]{Value: obj,
+
-			ValueNode: value, Reference: rv}}
+		v := low.ValueReference[*Response]{
+			Value:     obj,
+			ValueNode: value,
+		}
+		v.SetReference(rv, value)
+
+		r <- definitionResult[*Response]{k: label, v: v}
 	}
 	for i := range root.Content {
 		if i%2 == 0 {
@@ -238,16 +277,20 @@ func (s *SecurityDefinitions) Build(ctx context.Context, _, root *yaml.Node, idx
 	var defLabel *yaml.Node
 	totalDefinitions := 0
 
-	var buildFunc = func(label *yaml.Node, value *yaml.Node, idx *index.SpecIndex,
+	buildFunc := func(label *yaml.Node, value *yaml.Node, idx *index.SpecIndex,
-		r chan definitionResult[*SecurityScheme], e chan error) {
+		r chan definitionResult[*SecurityScheme], e chan error,
-
+	) {
 		obj, err, _, rv := low.ExtractObjectRaw[*SecurityScheme](ctx, label, value, idx)
 		if err != nil {
 			e <- err
 		}
-		r <- definitionResult[*SecurityScheme]{k: label, v: low.ValueReference[*SecurityScheme]{
+
-			Value: obj, ValueNode: value, Reference: rv,
+		v := low.ValueReference[*SecurityScheme]{
-		}}
+			Value: obj, ValueNode: value,
+		}
+		v.SetReference(rv, value)
+
+		r <- definitionResult[*SecurityScheme]{k: label, v: v}
 	}
 
 	for i := range root.Content {

datamodel/low/v2/examples.go

@@ -6,8 +6,6 @@ package v2
 import (
 	"context"
 	"crypto/sha256"
-	"fmt"
-	"sort"
 	"strings"
 
 	"github.com/pb33f/libopenapi/datamodel/low"
@@ -21,12 +19,12 @@ import (
 // Allows sharing examples for operation responses
 //   - https://swagger.io/specification/v2/#exampleObject
 type Examples struct {
-	Values orderedmap.Map[low.KeyReference[string], low.ValueReference[any]]
+	Values *orderedmap.Map[low.KeyReference[string], low.ValueReference[*yaml.Node]]
 }
 
 // FindExample attempts to locate an example value, using a key label.
-func (e *Examples) FindExample(name string) *low.ValueReference[any] {
+func (e *Examples) FindExample(name string) *low.ValueReference[*yaml.Node] {
-	return low.FindItemInOrderedMap[any](name, e.Values)
+	return low.FindItemInOrderedMap(name, e.Values)
 }
 
 // Build will extract all examples and will attempt to unmarshal content into a map or slice based on type.
@@ -34,54 +32,21 @@ func (e *Examples) Build(_ context.Context, _, root *yaml.Node, _ *index.SpecInd
 	root = utils.NodeAlias(root)
 	utils.CheckForMergeNodes(root)
 	var keyNode, currNode *yaml.Node
-	var err error
+	e.Values = orderedmap.New[low.KeyReference[string], low.ValueReference[*yaml.Node]]()
-	e.Values = orderedmap.New[low.KeyReference[string], low.ValueReference[any]]()
 	for i := range root.Content {
 		if i%2 == 0 {
 			keyNode = root.Content[i]
 			continue
 		}
 		currNode = root.Content[i]
-		var n map[string]interface{}
+
-		err = currNode.Decode(&n)
-		if err != nil {
-			var k []interface{}
-			err = currNode.Decode(&k)
-			if err != nil {
-				// lets just default to interface
-				var j interface{}
-				_ = currNode.Decode(&j)
 		e.Values.Set(
 			low.KeyReference[string]{
 				Value:   keyNode.Value,
 				KeyNode: keyNode,
 			},
-					low.ValueReference[any]{
+			low.ValueReference[*yaml.Node]{
-						Value:     j,
+				Value:     currNode,
-						ValueNode: currNode,
-					},
-				)
-				continue
-			}
-			e.Values.Set(
-				low.KeyReference[string]{
-					Value:   keyNode.Value,
-					KeyNode: keyNode,
-				},
-				low.ValueReference[any]{
-					Value:     k,
-					ValueNode: currNode,
-				},
-			)
-			continue
-		}
-		e.Values.Set(
-			low.KeyReference[string]{
-				Value:   keyNode.Value,
-				KeyNode: keyNode,
-			},
-			low.ValueReference[any]{
-				Value:     n,
 				ValueNode: currNode,
 			},
 		)
@@ -92,15 +57,8 @@ func (e *Examples) Build(_ context.Context, _, root *yaml.Node, _ *index.SpecInd
 // Hash will return a consistent SHA256 Hash of the Examples object
 func (e *Examples) Hash() [32]byte {
 	var f []string
-	keys := make([]string, orderedmap.Len(e.Values))
+	for pair := orderedmap.First(orderedmap.SortAlpha(e.Values)); pair != nil; pair = pair.Next() {
-	z := 0
+		f = append(f, low.GenerateHashString(pair.Value().Value))
-	for pair := orderedmap.First(e.Values); pair != nil; pair = pair.Next() {
-		keys[z] = pair.Key().Value
-		z++
-	}
-	sort.Strings(keys)
-	for k := range keys {
-		f = append(f, fmt.Sprintf("%v", e.FindExample(keys[k]).Value))
 	}
 	return sha256.Sum256([]byte(strings.Join(f, "|")))
 }

datamodel/low/v2/header.go

@@ -7,12 +7,14 @@ import (
 	"context"
 	"crypto/sha256"
 	"fmt"
-	"github.com/pb33f/libopenapi/datamodel/low"
-	"github.com/pb33f/libopenapi/index"
-	"github.com/pb33f/libopenapi/utils"
-	"gopkg.in/yaml.v3"
 	"sort"
 	"strings"
+
+	"github.com/pb33f/libopenapi/datamodel/low"
+	"github.com/pb33f/libopenapi/index"
+	"github.com/pb33f/libopenapi/orderedmap"
+	"github.com/pb33f/libopenapi/utils"
+	"gopkg.in/yaml.v3"
 )
 
 // Header Represents a low-level Swagger / OpenAPI 2 Header object.
@@ -25,7 +27,7 @@ type Header struct {
 	Description      low.NodeReference[string]
 	Items            low.NodeReference[*Items]
 	CollectionFormat low.NodeReference[string]
-	Default          low.NodeReference[any]
+	Default          low.NodeReference[*yaml.Node]
 	Maximum          low.NodeReference[int]
 	ExclusiveMaximum low.NodeReference[bool]
 	Minimum          low.NodeReference[int]
@@ -36,18 +38,18 @@ type Header struct {
 	MaxItems         low.NodeReference[int]
 	MinItems         low.NodeReference[int]
 	UniqueItems      low.NodeReference[bool]
-	Enum             low.NodeReference[[]low.ValueReference[any]]
+	Enum             low.NodeReference[[]low.ValueReference[*yaml.Node]]
 	MultipleOf       low.NodeReference[int]
-	Extensions       map[low.KeyReference[string]]low.ValueReference[any]
+	Extensions       *orderedmap.Map[low.KeyReference[string], low.ValueReference[*yaml.Node]]
 }
 
 // FindExtension will attempt to locate an extension value using a name lookup.
-func (h *Header) FindExtension(ext string) *low.ValueReference[any] {
+func (h *Header) FindExtension(ext string) *low.ValueReference[*yaml.Node] {
-	return low.FindItemInMap[any](ext, h.Extensions)
+	return low.FindItemInOrderedMap(ext, h.Extensions)
 }
 
 // GetExtensions returns all Header extensions and satisfies the low.HasExtensions interface.
-func (h *Header) GetExtensions() map[low.KeyReference[string]]low.ValueReference[any] {
+func (h *Header) GetExtensions() *orderedmap.Map[low.KeyReference[string], low.ValueReference[*yaml.Node]] {
 	return h.Extensions
 }
 
@@ -64,37 +66,14 @@ func (h *Header) Build(ctx context.Context, _, root *yaml.Node, idx *index.SpecI
 
 	_, ln, vn := utils.FindKeyNodeFull(DefaultLabel, root.Content)
 	if vn != nil {
-		var n map[string]interface{}
+		h.Default = low.NodeReference[*yaml.Node]{
-		err = vn.Decode(&n)
+			Value:     vn,
-		if err != nil {
-			// if not a map, then try an array
-			var k []interface{}
-			err = vn.Decode(&k)
-			if err != nil {
-				// lets just default to interface
-				var j interface{}
-				_ = vn.Decode(&j)
-				h.Default = low.NodeReference[any]{
-					Value:     j,
-					KeyNode:   ln,
-					ValueNode: vn,
-				}
-				return nil
-			}
-			h.Default = low.NodeReference[any]{
-				Value:     k,
-				KeyNode:   ln,
-				ValueNode: vn,
-			}
-			return nil
-		}
-		h.Default = low.NodeReference[any]{
-			Value:     n,
 			KeyNode:   ln,
 			ValueNode: vn,
 		}
 		return nil
 	}
+
 	return nil
 }
 
@@ -113,8 +92,8 @@ func (h *Header) Hash() [32]byte {
 	if h.CollectionFormat.Value != "" {
 		f = append(f, h.CollectionFormat.Value)
 	}
-	if h.Default.Value != "" {
+	if h.Default.Value != nil && !h.Default.Value.IsZero() {
-		f = append(f, fmt.Sprintf("%x", sha256.Sum256([]byte(fmt.Sprint(h.Default.Value)))))
+		f = append(f, low.GenerateHashString(h.Default.Value))
 	}
 	f = append(f, fmt.Sprint(h.Maximum.Value))
 	f = append(f, fmt.Sprint(h.Minimum.Value))
@@ -129,24 +108,17 @@ func (h *Header) Hash() [32]byte {
 	if h.Pattern.Value != "" {
 		f = append(f, fmt.Sprintf("%x", sha256.Sum256([]byte(fmt.Sprint(h.Pattern.Value)))))
 	}
+	f = append(f, low.HashExtensions(h.Extensions)...)
 
-	keys := make([]string, len(h.Extensions))
+	keys := make([]string, len(h.Enum.Value))
 	z := 0
-	for k := range h.Extensions {
+	for k := range h.Enum.Value {
-		keys[z] = fmt.Sprintf("%s-%x", k.Value, sha256.Sum256([]byte(fmt.Sprint(h.Extensions[k].Value))))
+		keys[z] = low.ValueToString(h.Enum.Value[k].Value)
 		z++
 	}
 	sort.Strings(keys)
 	f = append(f, keys...)
 
-	keys = make([]string, len(h.Enum.Value))
-	z = 0
-	for k := range h.Enum.Value {
-		keys[z] = fmt.Sprint(h.Enum.Value[k].Value)
-		z++
-	}
-	sort.Strings(keys)
-	f = append(f, keys...)
 	if h.Items.Value != nil {
 		f = append(f, low.GenerateHashString(h.Items.Value))
 	}
@@ -158,12 +130,15 @@ func (h *Header) Hash() [32]byte {
 func (h *Header) GetType() *low.NodeReference[string] {
 	return &h.Type
 }
+
 func (h *Header) GetDescription() *low.NodeReference[string] {
 	return &h.Description
 }
+
 func (h *Header) GetFormat() *low.NodeReference[string] {
 	return &h.Format
 }
+
 func (h *Header) GetItems() *low.NodeReference[any] {
 	i := low.NodeReference[any]{
 		KeyNode:   h.Items.KeyNode,
@@ -172,45 +147,59 @@ func (h *Header) GetItems() *low.NodeReference[any] {
 	}
 	return &i
 }
+
 func (h *Header) GetCollectionFormat() *low.NodeReference[string] {
 	return &h.CollectionFormat
 }
-func (h *Header) GetDefault() *low.NodeReference[any] {
+
+func (h *Header) GetDefault() *low.NodeReference[*yaml.Node] {
 	return &h.Default
 }
+
 func (h *Header) GetMaximum() *low.NodeReference[int] {
 	return &h.Maximum
 }
+
 func (h *Header) GetExclusiveMaximum() *low.NodeReference[bool] {
 	return &h.ExclusiveMaximum
 }
+
 func (h *Header) GetMinimum() *low.NodeReference[int] {
 	return &h.Minimum
 }
+
 func (h *Header) GetExclusiveMinimum() *low.NodeReference[bool] {
 	return &h.ExclusiveMinimum
 }
+
 func (h *Header) GetMaxLength() *low.NodeReference[int] {
 	return &h.MaxLength
 }
+
 func (h *Header) GetMinLength() *low.NodeReference[int] {
 	return &h.MinLength
 }
+
 func (h *Header) GetPattern() *low.NodeReference[string] {
 	return &h.Pattern
 }
+
 func (h *Header) GetMaxItems() *low.NodeReference[int] {
 	return &h.MaxItems
 }
+
 func (h *Header) GetMinItems() *low.NodeReference[int] {
 	return &h.MinItems
 }
+
 func (h *Header) GetUniqueItems() *low.NodeReference[bool] {
 	return &h.UniqueItems
 }
-func (h *Header) GetEnum() *low.NodeReference[[]low.ValueReference[any]] {
+
+func (h *Header) GetEnum() *low.NodeReference[[]low.ValueReference[*yaml.Node]] {
 	return &h.Enum
 }
+
 func (h *Header) GetMultipleOf() *low.NodeReference[int] {
 	return &h.MultipleOf
 }

datamodel/low/v2/header_test.go

@@ -5,15 +5,16 @@ package v2
 
 import (
 	"context"
+	"testing"
+
 	"github.com/pb33f/libopenapi/datamodel/low"
 	"github.com/pb33f/libopenapi/index"
+	"github.com/pb33f/libopenapi/orderedmap"
 	"github.com/stretchr/testify/assert"
 	"gopkg.in/yaml.v3"
-	"testing"
 )
 
 func TestHeader_Build(t *testing.T) {
-
 	yml := `items:
   $ref: break`
 
@@ -28,11 +29,9 @@ func TestHeader_Build(t *testing.T) {
 
 	err = n.Build(context.Background(), nil, idxNode.Content[0], idx)
 	assert.Error(t, err)
-
 }
 
 func TestHeader_DefaultAsSlice(t *testing.T) {
-
 	yml := `x-ext: thing
 default:
   - why
@@ -48,12 +47,15 @@ default:
 	_ = n.Build(context.Background(), nil, idxNode.Content[0], idx)
 
 	assert.NotNil(t, n.Default.Value)
-	assert.Len(t, n.Default.Value, 3)
+
-	assert.Len(t, n.GetExtensions(), 1)
+	var def []string
+	_ = n.Default.GetValue().Decode(&def)
+
+	assert.Len(t, def, 3)
+	assert.Equal(t, 1, orderedmap.Len(n.GetExtensions()))
 }
 
 func TestHeader_DefaultAsObject(t *testing.T) {
-
 	yml := `default:
   lets:
     create:
@@ -72,7 +74,6 @@ func TestHeader_DefaultAsObject(t *testing.T) {
 }
 
 func TestHeader_NoDefault(t *testing.T) {
-
 	yml := `minimum: 12`
 
 	var idxNode yaml.Node
@@ -87,7 +88,6 @@ func TestHeader_NoDefault(t *testing.T) {
 }
 
 func TestHeader_Hash_n_Grab(t *testing.T) {
-
 	yml := `description: head
 type: string
 format: left
@@ -160,7 +160,11 @@ pattern: wow
 	assert.Equal(t, "left", n.GetFormat().Value)
 	assert.Equal(t, "left", n.GetFormat().Value)
 	assert.Equal(t, "nice", n.GetCollectionFormat().Value)
-	assert.Equal(t, "shut that door!", n.GetDefault().Value)
+
+	var def string
+	_ = n.GetDefault().Value.Decode(&def)
+	assert.Equal(t, "shut that door!", def)
+
 	assert.Equal(t, 10, n.GetMaximum().Value)
 	assert.Equal(t, 1, n.GetMinimum().Value)
 	assert.True(t, n.GetExclusiveMinimum().Value)
@@ -174,6 +178,8 @@ pattern: wow
 	assert.Equal(t, "wow", n.GetPattern().Value)
 	assert.Equal(t, "int", n.GetItems().Value.(*Items).Type.Value)
 	assert.Len(t, n.GetEnum().Value, 2)
-	assert.Equal(t, "large", n.FindExtension("x-belly").Value)
 
+	var xBelly string
+	_ = n.FindExtension("x-belly").GetValue().Decode(&xBelly)
+	assert.Equal(t, "large", xBelly)
 }

datamodel/low/v2/items.go

@@ -7,12 +7,14 @@ import (
 	"context"
 	"crypto/sha256"
 	"fmt"
-	"github.com/pb33f/libopenapi/datamodel/low"
-	"github.com/pb33f/libopenapi/index"
-	"github.com/pb33f/libopenapi/utils"
-	"gopkg.in/yaml.v3"
 	"sort"
 	"strings"
+
+	"github.com/pb33f/libopenapi/datamodel/low"
+	"github.com/pb33f/libopenapi/index"
+	"github.com/pb33f/libopenapi/orderedmap"
+	"github.com/pb33f/libopenapi/utils"
+	"gopkg.in/yaml.v3"
 )
 
 // Items is a low-level representation of a Swagger / OpenAPI 2 Items object.
@@ -25,7 +27,7 @@ type Items struct {
 	Format           low.NodeReference[string]
 	CollectionFormat low.NodeReference[string]
 	Items            low.NodeReference[*Items]
-	Default          low.NodeReference[any]
+	Default          low.NodeReference[*yaml.Node]
 	Maximum          low.NodeReference[int]
 	ExclusiveMaximum low.NodeReference[bool]
 	Minimum          low.NodeReference[int]
@@ -36,18 +38,18 @@ type Items struct {
 	MaxItems         low.NodeReference[int]
 	MinItems         low.NodeReference[int]
 	UniqueItems      low.NodeReference[bool]
-	Enum             low.NodeReference[[]low.ValueReference[any]]
+	Enum             low.NodeReference[[]low.ValueReference[*yaml.Node]]
 	MultipleOf       low.NodeReference[int]
-	Extensions       map[low.KeyReference[string]]low.ValueReference[any]
+	Extensions       *orderedmap.Map[low.KeyReference[string], low.ValueReference[*yaml.Node]]
 }
 
 // FindExtension will attempt to locate an extension value using a name lookup.
-func (i *Items) FindExtension(ext string) *low.ValueReference[any] {
+func (i *Items) FindExtension(ext string) *low.ValueReference[*yaml.Node] {
-	return low.FindItemInMap[any](ext, i.Extensions)
+	return low.FindItemInOrderedMap(ext, i.Extensions)
 }
 
 // GetExtensions returns all Items extensions and satisfies the low.HasExtensions interface.
-func (i *Items) GetExtensions() map[low.KeyReference[string]]low.ValueReference[any] {
+func (i *Items) GetExtensions() *orderedmap.Map[low.KeyReference[string], low.ValueReference[*yaml.Node]] {
 	return i.Extensions
 }
 
@@ -63,8 +65,8 @@ func (i *Items) Hash() [32]byte {
 	if i.CollectionFormat.Value != "" {
 		f = append(f, i.CollectionFormat.Value)
 	}
-	if i.Default.Value != "" {
+	if i.Default.Value != nil && !i.Default.Value.IsZero() {
-		f = append(f, fmt.Sprintf("%x", sha256.Sum256([]byte(fmt.Sprint(i.Default.Value)))))
+		f = append(f, low.GenerateHashString(i.Default.Value))
 	}
 	f = append(f, fmt.Sprint(i.Maximum.Value))
 	f = append(f, fmt.Sprint(i.Minimum.Value))
@@ -82,7 +84,7 @@ func (i *Items) Hash() [32]byte {
 	keys := make([]string, len(i.Enum.Value))
 	z := 0
 	for k := range i.Enum.Value {
-		keys[z] = fmt.Sprint(i.Enum.Value[k].Value)
+		keys[z] = low.ValueToString(i.Enum.Value[k].Value)
 		z++
 	}
 	sort.Strings(keys)
@@ -91,14 +93,7 @@ func (i *Items) Hash() [32]byte {
 	if i.Items.Value != nil {
 		f = append(f, low.GenerateHashString(i.Items.Value))
 	}
-	keys = make([]string, len(i.Extensions))
+	f = append(f, low.HashExtensions(i.Extensions)...)
-	z = 0
-	for k := range i.Extensions {
-		keys[z] = fmt.Sprintf("%s-%x", k.Value, sha256.Sum256([]byte(fmt.Sprint(i.Extensions[k].Value))))
-		z++
-	}
-	sort.Strings(keys)
-	f = append(f, keys...)
 	return sha256.Sum256([]byte(strings.Join(f, "|")))
 }
 
@@ -115,32 +110,8 @@ func (i *Items) Build(ctx context.Context, _, root *yaml.Node, idx *index.SpecIn
 
 	_, ln, vn := utils.FindKeyNodeFull(DefaultLabel, root.Content)
 	if vn != nil {
-		var n map[string]interface{}
+		i.Default = low.NodeReference[*yaml.Node]{
-		err := vn.Decode(&n)
+			Value:     vn,
-		if err != nil {
-			// if not a map, then try an array
-			var k []interface{}
-			err = vn.Decode(&k)
-			if err != nil {
-				// lets just default to interface
-				var j interface{}
-				_ = vn.Decode(&j)
-				i.Default = low.NodeReference[any]{
-					Value:     j,
-					KeyNode:   ln,
-					ValueNode: vn,
-				}
-				return nil
-			}
-			i.Default = low.NodeReference[any]{
-				Value:     k,
-				KeyNode:   ln,
-				ValueNode: vn,
-			}
-			return nil
-		}
-		i.Default = low.NodeReference[any]{
-			Value:     n,
 			KeyNode:   ln,
 			ValueNode: vn,
 		}
@@ -154,9 +125,11 @@ func (i *Items) Build(ctx context.Context, _, root *yaml.Node, idx *index.SpecIn
 func (i *Items) GetType() *low.NodeReference[string] {
 	return &i.Type
 }
+
 func (i *Items) GetFormat() *low.NodeReference[string] {
 	return &i.Format
 }
+
 func (i *Items) GetItems() *low.NodeReference[any] {
 	k := low.NodeReference[any]{
 		KeyNode:   i.Items.KeyNode,
@@ -165,48 +138,63 @@ func (i *Items) GetItems() *low.NodeReference[any] {
 	}
 	return &k
 }
+
 func (i *Items) GetCollectionFormat() *low.NodeReference[string] {
 	return &i.CollectionFormat
 }
+
 func (i *Items) GetDescription() *low.NodeReference[string] {
 	return nil // not implemented, but required to align with header contract
 }
-func (i *Items) GetDefault() *low.NodeReference[any] {
+
+func (i *Items) GetDefault() *low.NodeReference[*yaml.Node] {
 	return &i.Default
 }
+
 func (i *Items) GetMaximum() *low.NodeReference[int] {
 	return &i.Maximum
 }
+
 func (i *Items) GetExclusiveMaximum() *low.NodeReference[bool] {
 	return &i.ExclusiveMaximum
 }
+
 func (i *Items) GetMinimum() *low.NodeReference[int] {
 	return &i.Minimum
 }
+
 func (i *Items) GetExclusiveMinimum() *low.NodeReference[bool] {
 	return &i.ExclusiveMinimum
 }
+
 func (i *Items) GetMaxLength() *low.NodeReference[int] {
 	return &i.MaxLength
 }
+
 func (i *Items) GetMinLength() *low.NodeReference[int] {
 	return &i.MinLength
 }
+
 func (i *Items) GetPattern() *low.NodeReference[string] {
 	return &i.Pattern
 }
+
 func (i *Items) GetMaxItems() *low.NodeReference[int] {
 	return &i.MaxItems
 }
+
 func (i *Items) GetMinItems() *low.NodeReference[int] {
 	return &i.MinItems
 }
+
 func (i *Items) GetUniqueItems() *low.NodeReference[bool] {
 	return &i.UniqueItems
 }
-func (i *Items) GetEnum() *low.NodeReference[[]low.ValueReference[any]] {
+
+func (i *Items) GetEnum() *low.NodeReference[[]low.ValueReference[*yaml.Node]] {
 	return &i.Enum
 }
+
 func (i *Items) GetMultipleOf() *low.NodeReference[int] {
 	return &i.MultipleOf
 }

datamodel/low/v2/items_test.go

@@ -5,15 +5,16 @@ package v2
 
 import (
 	"context"
+	"testing"
+
 	"github.com/pb33f/libopenapi/datamodel/low"
 	"github.com/pb33f/libopenapi/index"
+	"github.com/pb33f/libopenapi/orderedmap"
 	"github.com/stretchr/testify/assert"
 	"gopkg.in/yaml.v3"
-	"testing"
 )
 
 func TestItems_Build(t *testing.T) {
-
 	yml := `items:
   $ref: break`
 
@@ -31,7 +32,6 @@ func TestItems_Build(t *testing.T) {
 }
 
 func TestItems_DefaultAsSlice(t *testing.T) {
-
 	yml := `x-thing: thing
 default:
   - pizza
@@ -45,12 +45,14 @@ default:
 	_ = low.BuildModel(&idxNode, &n)
 	_ = n.Build(context.Background(), nil, idxNode.Content[0], idx)
 
-	assert.Len(t, n.Default.Value, 2)
+	var def []string
-	assert.Len(t, n.GetExtensions(), 1)
+	_ = n.Default.Value.Decode(&def)
+
+	assert.Len(t, def, 2)
+	assert.Equal(t, 1, orderedmap.Len(n.GetExtensions()))
 }
 
 func TestItems_DefaultAsMap(t *testing.T) {
-
 	yml := `default:
   hot: pizza
   tasty: beer`
@@ -63,12 +65,13 @@ func TestItems_DefaultAsMap(t *testing.T) {
 	_ = low.BuildModel(&idxNode, &n)
 	_ = n.Build(context.Background(), nil, idxNode.Content[0], idx)
 
-	assert.Len(t, n.Default.Value, 2)
+	var def map[string]string
+	_ = n.Default.GetValue().Decode(&def)
 
+	assert.Len(t, def, 2)
 }
 
 func TestItems_Hash_n_Grab(t *testing.T) {
-
 	yml := `type: string
 format: left
 collectionFormat: nice
@@ -138,7 +141,10 @@ pattern: wow
 	assert.Equal(t, "left", n.GetFormat().Value)
 	assert.Equal(t, "left", n.GetFormat().Value)
 	assert.Equal(t, "nice", n.GetCollectionFormat().Value)
-	assert.Equal(t, "shut that door!", n.GetDefault().Value)
+
+	var def string
+	_ = n.GetDefault().Value.Decode(&def)
+	assert.Equal(t, "shut that door!", def)
 	assert.Equal(t, 10, n.GetMaximum().Value)
 	assert.Equal(t, 1, n.GetMinimum().Value)
 	assert.True(t, n.GetExclusiveMinimum().Value)
@@ -152,7 +158,8 @@ pattern: wow
 	assert.Equal(t, "wow", n.GetPattern().Value)
 	assert.Equal(t, "int", n.GetItems().Value.(*Items).Type.Value)
 	assert.Len(t, n.GetEnum().Value, 2)
-	assert.Equal(t, "large", n.FindExtension("x-belly").Value)
-	assert.Nil(t, n.GetDescription())
 
+	var xBelly string
+	_ = n.FindExtension("x-belly").GetValue().Decode(&xBelly)
+	assert.Equal(t, "large", xBelly)
 }

datamodel/low/v2/operation.go

@@ -7,13 +7,15 @@ import (
 	"context"
 	"crypto/sha256"
 	"fmt"
+	"sort"
+	"strings"
+
 	"github.com/pb33f/libopenapi/datamodel/low"
 	"github.com/pb33f/libopenapi/datamodel/low/base"
 	"github.com/pb33f/libopenapi/index"
+	"github.com/pb33f/libopenapi/orderedmap"
 	"github.com/pb33f/libopenapi/utils"
 	"gopkg.in/yaml.v3"
-	"sort"
-	"strings"
 )
 
 // Operation represents a low-level Swagger / OpenAPI 2 Operation object.
@@ -33,7 +35,7 @@ type Operation struct {
 	Schemes      low.NodeReference[[]low.ValueReference[string]]
 	Deprecated   low.NodeReference[bool]
 	Security     low.NodeReference[[]low.ValueReference[*base.SecurityRequirement]]
-	Extensions   map[low.KeyReference[string]]low.ValueReference[any]
+	Extensions   *orderedmap.Map[low.KeyReference[string], low.ValueReference[*yaml.Node]]
 }
 
 // Build will extract external docs, extensions, parameters, responses and security requirements.
@@ -150,14 +152,7 @@ func (o *Operation) Hash() [32]byte {
 	}
 	sort.Strings(keys)
 	f = append(f, keys...)
-	keys = make([]string, len(o.Extensions))
+	f = append(f, low.HashExtensions(o.Extensions)...)
-	z := 0
-	for k := range o.Extensions {
-		keys[z] = fmt.Sprintf("%s-%x", k.Value, sha256.Sum256([]byte(fmt.Sprint(o.Extensions[k].Value))))
-		z++
-	}
-	sort.Strings(keys)
-	f = append(f, keys...)
 	return sha256.Sum256([]byte(strings.Join(f, "|")))
 }
 
@@ -185,7 +180,7 @@ func (o *Operation) GetOperationId() low.NodeReference[string] {
 func (o *Operation) GetDeprecated() low.NodeReference[bool] {
 	return o.Deprecated
 }
-func (o *Operation) GetExtensions() map[low.KeyReference[string]]low.ValueReference[any] {
+func (o *Operation) GetExtensions() *orderedmap.Map[low.KeyReference[string], low.ValueReference[*yaml.Node]] {
 	return o.Extensions
 }
 func (o *Operation) GetResponses() low.NodeReference[any] {

datamodel/low/v2/operation_test.go

@@ -16,7 +16,6 @@ import (
 )
 
 func TestOperation_Build_ExternalDocs(t *testing.T) {
-
 	yml := `externalDocs:
   $ref: break`
 
@@ -31,11 +30,9 @@ func TestOperation_Build_ExternalDocs(t *testing.T) {
 
 	err = n.Build(context.Background(), nil, idxNode.Content[0], idx)
 	assert.Error(t, err)
-
 }
 
 func TestOperation_Build_Params(t *testing.T) {
-
 	yml := `parameters:
   $ref: break`
 
@@ -50,11 +47,9 @@ func TestOperation_Build_Params(t *testing.T) {
 
 	err = n.Build(context.Background(), nil, idxNode.Content[0], idx)
 	assert.Error(t, err)
-
 }
 
 func TestOperation_Build_Responses(t *testing.T) {
-
 	yml := `responses:
   $ref: break`
 
@@ -69,11 +64,9 @@ func TestOperation_Build_Responses(t *testing.T) {
 
 	err = n.Build(context.Background(), nil, idxNode.Content[0], idx)
 	assert.Error(t, err)
-
 }
 
 func TestOperation_Build_Security(t *testing.T) {
-
 	yml := `security:
   $ref: break`
 
@@ -88,11 +81,9 @@ func TestOperation_Build_Security(t *testing.T) {
 
 	err = n.Build(context.Background(), nil, idxNode.Content[0], idx)
 	assert.Error(t, err)
-
 }
 
 func TestOperation_Hash_n_Grab(t *testing.T) {
-
 	yml := `tags:
   - nice
   - hat
@@ -185,5 +176,5 @@ security:
 	assert.True(t, n.GetDeprecated().Value)
 	assert.Equal(t, 1, orderedmap.Len(n.GetResponses().Value.(*Responses).Codes))
 	assert.Len(t, n.GetSecurity().Value, 1)
-	assert.Len(t, n.GetExtensions(), 1)
+	assert.Equal(t, 1, orderedmap.Len(n.GetExtensions()))
 }

datamodel/low/v2/parameter.go

@@ -7,13 +7,15 @@ import (
 	"context"
 	"crypto/sha256"
 	"fmt"
+	"sort"
+	"strings"
+
 	"github.com/pb33f/libopenapi/datamodel/low"
 	"github.com/pb33f/libopenapi/datamodel/low/base"
 	"github.com/pb33f/libopenapi/index"
+	"github.com/pb33f/libopenapi/orderedmap"
 	"github.com/pb33f/libopenapi/utils"
 	"gopkg.in/yaml.v3"
-	"sort"
-	"strings"
 )
 
 // Parameter represents a low-level Swagger / OpenAPI 2 Parameter object.
@@ -68,7 +70,7 @@ type Parameter struct {
 	Schema           low.NodeReference[*base.SchemaProxy]
 	Items            low.NodeReference[*Items]
 	CollectionFormat low.NodeReference[string]
-	Default          low.NodeReference[any]
+	Default          low.NodeReference[*yaml.Node]
 	Maximum          low.NodeReference[int]
 	ExclusiveMaximum low.NodeReference[bool]
 	Minimum          low.NodeReference[int]
@@ -79,18 +81,18 @@ type Parameter struct {
 	MaxItems         low.NodeReference[int]
 	MinItems         low.NodeReference[int]
 	UniqueItems      low.NodeReference[bool]
-	Enum             low.NodeReference[[]low.ValueReference[any]]
+	Enum             low.NodeReference[[]low.ValueReference[*yaml.Node]]
 	MultipleOf       low.NodeReference[int]
-	Extensions       map[low.KeyReference[string]]low.ValueReference[any]
+	Extensions       *orderedmap.Map[low.KeyReference[string], low.ValueReference[*yaml.Node]]
 }
 
 // FindExtension attempts to locate a extension value given a name.
-func (p *Parameter) FindExtension(ext string) *low.ValueReference[any] {
+func (p *Parameter) FindExtension(ext string) *low.ValueReference[*yaml.Node] {
-	return low.FindItemInMap[any](ext, p.Extensions)
+	return low.FindItemInOrderedMap(ext, p.Extensions)
 }
 
 // GetExtensions returns all Parameter extensions and satisfies the low.HasExtensions interface.
-func (p *Parameter) GetExtensions() map[low.KeyReference[string]]low.ValueReference[any] {
+func (p *Parameter) GetExtensions() *orderedmap.Map[low.KeyReference[string], low.ValueReference[*yaml.Node]] {
 	return p.Extensions
 }
 
@@ -114,30 +116,8 @@ func (p *Parameter) Build(ctx context.Context, _, root *yaml.Node, idx *index.Sp
 
 	_, ln, vn := utils.FindKeyNodeFull(DefaultLabel, root.Content)
 	if vn != nil {
-		var n map[string]interface{}
+		p.Default = low.NodeReference[*yaml.Node]{
-		err := vn.Decode(&n)
+			Value:     vn,
-		if err != nil {
-			var k []interface{}
-			err = vn.Decode(&k)
-			if err != nil {
-				var j interface{}
-				_ = vn.Decode(&j)
-				p.Default = low.NodeReference[any]{
-					Value:     j,
-					KeyNode:   ln,
-					ValueNode: vn,
-				}
-				return nil
-			}
-			p.Default = low.NodeReference[any]{
-				Value:     k,
-				KeyNode:   ln,
-				ValueNode: vn,
-			}
-			return nil
-		}
-		p.Default = low.NodeReference[any]{
-			Value:     n,
 			KeyNode:   ln,
 			ValueNode: vn,
 		}
@@ -172,8 +152,8 @@ func (p *Parameter) Hash() [32]byte {
 	if p.CollectionFormat.Value != "" {
 		f = append(f, p.CollectionFormat.Value)
 	}
-	if p.Default.Value != "" {
+	if p.Default.Value != nil && !p.Default.Value.IsZero() {
-		f = append(f, fmt.Sprintf("%x", sha256.Sum256([]byte(fmt.Sprint(p.Default.Value)))))
+		f = append(f, low.GenerateHashString(p.Default.Value))
 	}
 	f = append(f, fmt.Sprint(p.Maximum.Value))
 	f = append(f, fmt.Sprint(p.Minimum.Value))
@@ -192,20 +172,13 @@ func (p *Parameter) Hash() [32]byte {
 	keys := make([]string, len(p.Enum.Value))
 	z := 0
 	for k := range p.Enum.Value {
-		keys[z] = fmt.Sprint(p.Enum.Value[k].Value)
+		keys[z] = low.ValueToString(p.Enum.Value[k].Value)
 		z++
 	}
 	sort.Strings(keys)
 	f = append(f, keys...)
 
-	keys = make([]string, len(p.Extensions))
+	f = append(f, low.HashExtensions(p.Extensions)...)
-	z = 0
-	for k := range p.Extensions {
-		keys[z] = fmt.Sprintf("%s-%x", k.Value, sha256.Sum256([]byte(fmt.Sprint(p.Extensions[k].Value))))
-		z++
-	}
-	sort.Strings(keys)
-	f = append(f, keys...)
 	if p.Items.Value != nil {
 		f = append(f, fmt.Sprintf("%x", p.Items.Value.Hash()))
 	}
@@ -217,21 +190,27 @@ func (p *Parameter) Hash() [32]byte {
 func (p *Parameter) GetName() *low.NodeReference[string] {
 	return &p.Name
 }
+
 func (p *Parameter) GetIn() *low.NodeReference[string] {
 	return &p.In
 }
+
 func (p *Parameter) GetType() *low.NodeReference[string] {
 	return &p.Type
 }
+
 func (p *Parameter) GetDescription() *low.NodeReference[string] {
 	return &p.Description
 }
+
 func (p *Parameter) GetRequired() *low.NodeReference[bool] {
 	return &p.Required
 }
+
 func (p *Parameter) GetAllowEmptyValue() *low.NodeReference[bool] {
 	return &p.AllowEmptyValue
 }
+
 func (p *Parameter) GetSchema() *low.NodeReference[any] {
 	i := low.NodeReference[any]{
 		KeyNode:   p.Schema.KeyNode,
@@ -240,9 +219,11 @@ func (p *Parameter) GetSchema() *low.NodeReference[any] {
 	}
 	return &i
 }
+
 func (p *Parameter) GetFormat() *low.NodeReference[string] {
 	return &p.Format
 }
+
 func (p *Parameter) GetItems() *low.NodeReference[any] {
 	i := low.NodeReference[any]{
 		KeyNode:   p.Items.KeyNode,
@@ -251,45 +232,59 @@ func (p *Parameter) GetItems() *low.NodeReference[any] {
 	}
 	return &i
 }
+
 func (p *Parameter) GetCollectionFormat() *low.NodeReference[string] {
 	return &p.CollectionFormat
 }
-func (p *Parameter) GetDefault() *low.NodeReference[any] {
+
+func (p *Parameter) GetDefault() *low.NodeReference[*yaml.Node] {
 	return &p.Default
 }
+
 func (p *Parameter) GetMaximum() *low.NodeReference[int] {
 	return &p.Maximum
 }
+
 func (p *Parameter) GetExclusiveMaximum() *low.NodeReference[bool] {
 	return &p.ExclusiveMaximum
 }
+
 func (p *Parameter) GetMinimum() *low.NodeReference[int] {
 	return &p.Minimum
 }
+
 func (p *Parameter) GetExclusiveMinimum() *low.NodeReference[bool] {
 	return &p.ExclusiveMinimum
 }
+
 func (p *Parameter) GetMaxLength() *low.NodeReference[int] {
 	return &p.MaxLength
 }
+
 func (p *Parameter) GetMinLength() *low.NodeReference[int] {
 	return &p.MinLength
 }
+
 func (p *Parameter) GetPattern() *low.NodeReference[string] {
 	return &p.Pattern
 }
+
 func (p *Parameter) GetMaxItems() *low.NodeReference[int] {
 	return &p.MaxItems
 }
+
 func (p *Parameter) GetMinItems() *low.NodeReference[int] {
 	return &p.MinItems
 }
+
 func (p *Parameter) GetUniqueItems() *low.NodeReference[bool] {
 	return &p.UniqueItems
 }
-func (p *Parameter) GetEnum() *low.NodeReference[[]low.ValueReference[any]] {
+
+func (p *Parameter) GetEnum() *low.NodeReference[[]low.ValueReference[*yaml.Node]] {
 	return &p.Enum
 }
+
 func (p *Parameter) GetMultipleOf() *low.NodeReference[int] {
 	return &p.MultipleOf
 }

datamodel/low/v2/parameter_test.go

@@ -5,16 +5,17 @@ package v2
 
 import (
 	"context"
+	"testing"
+
 	"github.com/pb33f/libopenapi/datamodel/low"
 	"github.com/pb33f/libopenapi/datamodel/low/base"
 	"github.com/pb33f/libopenapi/index"
+	"github.com/pb33f/libopenapi/orderedmap"
 	"github.com/stretchr/testify/assert"
 	"gopkg.in/yaml.v3"
-	"testing"
 )
 
 func TestParameter_Build(t *testing.T) {
-
 	yml := `$ref: break`
 
 	var idxNode yaml.Node
@@ -28,11 +29,9 @@ func TestParameter_Build(t *testing.T) {
 
 	err = n.Build(context.Background(), nil, idxNode.Content[0], idx)
 	assert.Error(t, err)
-
 }
 
 func TestParameter_Build_Items(t *testing.T) {
-
 	yml := `items:
   $ref: break`
 
@@ -47,11 +46,9 @@ func TestParameter_Build_Items(t *testing.T) {
 
 	err = n.Build(context.Background(), nil, idxNode.Content[0], idx)
 	assert.Error(t, err)
-
 }
 
 func TestParameter_DefaultSlice(t *testing.T) {
-
 	yml := `default:
   - things
   - junk
@@ -65,11 +62,14 @@ func TestParameter_DefaultSlice(t *testing.T) {
 	_ = low.BuildModel(&idxNode, &n)
 
 	_ = n.Build(context.Background(), nil, idxNode.Content[0], idx)
-	assert.Len(t, n.Default.Value.([]any), 3)
+
+	var a []any
+	_ = n.Default.Value.Decode(&a)
+
+	assert.Len(t, a, 3)
 }
 
 func TestParameter_DefaultMap(t *testing.T) {
-
 	yml := `default:
   things: junk
   stuff: more junk`
@@ -82,11 +82,14 @@ func TestParameter_DefaultMap(t *testing.T) {
 	_ = low.BuildModel(&idxNode, &n)
 
 	_ = n.Build(context.Background(), nil, idxNode.Content[0], idx)
-	assert.Len(t, n.Default.Value.(map[string]any), 2)
+
+	var m map[string]any
+	_ = n.Default.Value.Decode(&m)
+
+	assert.Len(t, m, 2)
 }
 
 func TestParameter_NoDefaultNoError(t *testing.T) {
-
 	yml := `name: pizza-pie`
 
 	var idxNode yaml.Node
@@ -101,7 +104,6 @@ func TestParameter_NoDefaultNoError(t *testing.T) {
 }
 
 func TestParameter_Hash_n_Grab(t *testing.T) {
-
 	yml := `name: mcmuffin
 in: my-belly
 description: tasty!
@@ -185,7 +187,10 @@ allowEmptyValue: true
 	assert.Equal(t, "left", n.GetFormat().Value)
 	assert.Equal(t, "left", n.GetFormat().Value)
 	assert.Equal(t, "nice", n.GetCollectionFormat().Value)
-	assert.Equal(t, "shut that door!", n.GetDefault().Value)
+
+	var def string
+	_ = n.GetDefault().Value.Decode(&def)
+	assert.Equal(t, "shut that door!", def)
 	assert.Equal(t, 10, n.GetMaximum().Value)
 	assert.Equal(t, 1, n.GetMinimum().Value)
 	assert.True(t, n.GetExclusiveMinimum().Value)
@@ -199,7 +204,10 @@ allowEmptyValue: true
 	assert.Equal(t, "wow", n.GetPattern().Value)
 	assert.Equal(t, "int", n.GetItems().Value.(*Items).Type.Value)
 	assert.Len(t, n.GetEnum().Value, 2)
-	assert.Equal(t, "large", n.FindExtension("x-belly").Value)
+
+	var xBelly string
+	_ = n.FindExtension("x-belly").Value.Decode(&xBelly)
+	assert.Equal(t, "large", xBelly)
 	assert.Equal(t, "tasty!", n.GetDescription().Value)
 	assert.Equal(t, "mcmuffin", n.GetName().Value)
 	assert.Equal(t, "my-belly", n.GetIn().Value)
@@ -208,6 +216,5 @@ allowEmptyValue: true
 	assert.Equal(t, "int", v.Value.A)                          // A is v2
 	assert.True(t, n.GetRequired().Value)
 	assert.True(t, n.GetAllowEmptyValue().Value)
-	assert.Len(t, n.GetExtensions(), 1)
+	assert.Equal(t, 1, orderedmap.Len(n.GetExtensions()))
-
 }

datamodel/low/v2/path_item.go

@@ -13,6 +13,7 @@ import (
 
 	"github.com/pb33f/libopenapi/datamodel/low"
 	"github.com/pb33f/libopenapi/index"
+	"github.com/pb33f/libopenapi/orderedmap"
 	"github.com/pb33f/libopenapi/utils"
 	"gopkg.in/yaml.v3"
 )
@@ -34,16 +35,16 @@ type PathItem struct {
 	Head       low.NodeReference[*Operation]
 	Patch      low.NodeReference[*Operation]
 	Parameters low.NodeReference[[]low.ValueReference[*Parameter]]
-	Extensions map[low.KeyReference[string]]low.ValueReference[any]
+	Extensions *orderedmap.Map[low.KeyReference[string], low.ValueReference[*yaml.Node]]
 }
 
 // FindExtension will attempt to locate an extension given a name.
-func (p *PathItem) FindExtension(ext string) *low.ValueReference[any] {
+func (p *PathItem) FindExtension(ext string) *low.ValueReference[*yaml.Node] {
-	return low.FindItemInMap[any](ext, p.Extensions)
+	return low.FindItemInOrderedMap(ext, p.Extensions)
 }
 
 // GetExtensions returns all PathItem extensions and satisfies the low.HasExtensions interface.
-func (p *PathItem) GetExtensions() map[low.KeyReference[string]]low.ValueReference[any] {
+func (p *PathItem) GetExtensions() *orderedmap.Map[low.KeyReference[string], low.ValueReference[*yaml.Node]] {
 	return p.Extensions
 }
 
@@ -153,8 +154,8 @@ func (p *PathItem) Build(ctx context.Context, _, root *yaml.Node, idx *index.Spe
 		}
 	}
 
-	//all operations have been superficially built,
+	// all operations have been superficially built,
-	//now we need to build out the operation, we will do this asynchronously for speed.
+	// now we need to build out the operation, we will do this asynchronously for speed.
 	opBuildChan := make(chan bool)
 	opErrorChan := make(chan error)
 
@@ -223,13 +224,6 @@ func (p *PathItem) Hash() [32]byte {
 	}
 	sort.Strings(keys)
 	f = append(f, keys...)
-	keys = make([]string, len(p.Extensions))
+	f = append(f, low.HashExtensions(p.Extensions)...)
-	z := 0
-	for k := range p.Extensions {
-		keys[z] = fmt.Sprintf("%s-%x", k.Value, sha256.Sum256([]byte(fmt.Sprint(p.Extensions[k].Value))))
-		z++
-	}
-	sort.Strings(keys)
-	f = append(f, keys...)
 	return sha256.Sum256([]byte(strings.Join(f, "|")))
 }

datamodel/low/v2/path_item_test.go

@@ -5,15 +5,16 @@ package v2
 
 import (
 	"context"
+	"testing"
+
 	"github.com/pb33f/libopenapi/datamodel/low"
 	"github.com/pb33f/libopenapi/index"
+	"github.com/pb33f/libopenapi/orderedmap"
 	"github.com/stretchr/testify/assert"
 	"gopkg.in/yaml.v3"
-	"testing"
 )
 
 func TestPathItem_Build_Params(t *testing.T) {
-
 	yml := `parameters:
   $ref: break`
 
@@ -28,11 +29,9 @@ func TestPathItem_Build_Params(t *testing.T) {
 
 	err = n.Build(context.Background(), nil, idxNode.Content[0], idx)
 	assert.Error(t, err)
-
 }
 
 func TestPathItem_Build_MethodFail(t *testing.T) {
-
 	yml := `post:
   $ref: break`
 
@@ -47,11 +46,9 @@ func TestPathItem_Build_MethodFail(t *testing.T) {
 
 	err = n.Build(context.Background(), nil, idxNode.Content[0], idx)
 	assert.Error(t, err)
-
 }
 
 func TestPathItem_Hash(t *testing.T) {
-
 	yml := `get:
   description: get me up
 put:
@@ -108,6 +105,5 @@ parameters:
 
 	// hash
 	assert.Equal(t, n.Hash(), n2.Hash())
-	assert.Len(t, n.GetExtensions(), 1)
+	assert.Equal(t, 1, orderedmap.Len(n.GetExtensions()))
-
 }