Adding more model building code.

Seems to be working pretty well so far.

datamodel/low/reference.go

@@ -16,6 +16,6 @@ type NodeReference[T comparable] struct {
 }
 
 type ObjectReference struct {
-    Value interface{}
+    Value map[string]interface{}
     Node  *yaml.Node
 }

utils/model_builder.go

@@ -2,7 +2,6 @@ package utils
 
 import (
     "fmt"
-    "github.com/iancoleman/strcase"
     "github.com/pb33f/libopenapi/datamodel/low"
     "gopkg.in/yaml.v3"
     "reflect"
@@ -14,73 +13,31 @@ func BuildModel(node *yaml.Node, model interface{}) error {
     for i := 0; i < v.NumField(); i++ {
 
         fName := v.Type().Field(i).Name
-        fieldName := strcase.ToLowerCamel(fName)
-        _, vn := FindKeyNode(fieldName, node.Content)
-        field := v.FieldByName(fName)
-        switch field.Kind() {
-        case reflect.Struct:
-            switch field.Type() {
-            case reflect.TypeOf(low.NodeReference[string]{}):
-                if vn != nil {
-                    if IsNodeStringValue(vn) {
-                        if field.CanSet() {
-                            nr := low.NodeReference[string]{Value: vn.Value, Node: vn}
-                            field.Set(reflect.ValueOf(nr))
-                        }
-                    }
-                }
-                break
 
-            case reflect.TypeOf(low.NodeReference[bool]{}):
+        // we need to find a matching field in the YAML, the cases may be off, so take no chances.
+        cases := []Case{PascalCase, CamelCase, ScreamingSnakeCase,
+            SnakeCase, KebabCase, RegularCase}
+
+        var vn, kn *yaml.Node
+        for _, tryCase := range cases {
+            kn, vn = FindKeyNode(ConvertCase(fName, tryCase), node.Content)
             if vn != nil {
-                    if IsNodeBoolValue(vn) {
-                        if field.CanSet() {
-                            bv, _ := strconv.ParseBool(vn.Value)
-                            nr := low.NodeReference[bool]{Value: bv, Node: vn}
-                            field.Set(reflect.ValueOf(nr))
-                        }
-                    }
-                }
-            case reflect.TypeOf(low.NodeReference[int]{}):
-                if vn != nil {
-                    if IsNodeIntValue(vn) {
-                        if field.CanSet() {
-                            fv, _ := strconv.Atoi(vn.Value)
-                            nr := low.NodeReference[int]{Value: fv, Node: vn}
-                            field.Set(reflect.ValueOf(nr))
-                        }
-                    }
-                }
-            case reflect.TypeOf(low.NodeReference[int64]{}):
-                if vn != nil {
-                    if IsNodeIntValue(vn) {
-                        if field.CanSet() {
-                            fv, _ := strconv.Atoi(vn.Value)
-                            nr := low.NodeReference[int64]{Value: int64(fv), Node: vn}
-                            field.Set(reflect.ValueOf(nr))
-                        }
-                    }
-                }
-            case reflect.TypeOf(low.NodeReference[float32]{}):
-                if vn != nil {
-                    if IsNodeFloatValue(vn) {
-                        if field.CanSet() {
-                            fv, _ := strconv.ParseFloat(vn.Value, 32)
-                            nr := low.NodeReference[float32]{Value: float32(fv), Node: vn}
-                            field.Set(reflect.ValueOf(nr))
-                        }
-                    }
-                }
-            case reflect.TypeOf(low.NodeReference[float64]{}):
-                if vn != nil {
-                    if IsNodeFloatValue(vn) {
-                        if field.CanSet() {
-                            fv, _ := strconv.ParseFloat(vn.Value, 64)
-                            nr := low.NodeReference[float64]{Value: fv, Node: vn}
-                            field.Set(reflect.ValueOf(nr))
+                break
             }
         }
+
+        if vn == nil {
+            // no point in going on.
+            continue
         }
+
+        field := v.FieldByName(fName)
+        kind := field.Kind()
+        switch kind {
+        case reflect.Struct, reflect.Slice, reflect.Map:
+            err := SetField(field, vn, kn)
+            if err != nil {
+                return nil
             }
         default:
             fmt.Printf("Unsupported type: %v", v.Field(i).Kind())
@@ -91,3 +48,211 @@ func BuildModel(node *yaml.Node, model interface{}) error {
 
     return nil
 }
+
+func SetField(field reflect.Value, valueNode *yaml.Node, keyNode *yaml.Node) error {
+    switch field.Type() {
+
+    case reflect.TypeOf(map[string]low.ObjectReference{}):
+        if valueNode != nil {
+            if IsNodeMap(valueNode) {
+                if field.CanSet() {
+                    items := make(map[string]low.ObjectReference)
+                    var currentLabel string
+                    for i, sliceItem := range valueNode.Content {
+                        if i%2 == 0 {
+                            currentLabel = sliceItem.Value
+                            continue
+                        }
+                        var decoded map[string]interface{}
+                        err := sliceItem.Decode(&decoded)
+                        if err != nil {
+                            return err
+                        }
+                        items[currentLabel] = low.ObjectReference{
+                            Value: decoded,
+                            Node:  sliceItem,
+                        }
+                    }
+                    field.Set(reflect.ValueOf(items))
+                }
+            }
+        }
+        break
+
+    case reflect.TypeOf(low.ObjectReference{}):
+        if valueNode != nil {
+            var decoded map[string]interface{}
+            err := valueNode.Decode(&decoded)
+            if err != nil {
+                return err
+            }
+            if IsNodeMap(valueNode) {
+                if field.CanSet() {
+                    or := low.ObjectReference{Value: decoded, Node: valueNode}
+                    field.Set(reflect.ValueOf(or))
+                }
+            }
+        }
+        break
+    case reflect.TypeOf([]low.ObjectReference{}):
+        if valueNode != nil {
+            if IsNodeArray(valueNode) {
+                if field.CanSet() {
+                    var items []low.ObjectReference
+                    for _, sliceItem := range valueNode.Content {
+                        var decoded map[string]interface{}
+                        err := sliceItem.Decode(&decoded)
+                        if err != nil {
+                            return err
+                        }
+                        items = append(items, low.ObjectReference{
+                            Value: decoded,
+                            Node:  sliceItem,
+                        })
+                    }
+                    field.Set(reflect.ValueOf(items))
+                }
+            }
+        }
+        break
+    case reflect.TypeOf(low.NodeReference[string]{}):
+        if valueNode != nil {
+            if IsNodeStringValue(valueNode) {
+                if field.CanSet() {
+                    nr := low.NodeReference[string]{Value: valueNode.Value, Node: valueNode}
+                    field.Set(reflect.ValueOf(nr))
+                }
+            }
+        }
+        break
+    case reflect.TypeOf(low.NodeReference[bool]{}):
+        if valueNode != nil {
+            if IsNodeBoolValue(valueNode) {
+                if field.CanSet() {
+                    bv, _ := strconv.ParseBool(valueNode.Value)
+                    nr := low.NodeReference[bool]{Value: bv, Node: valueNode}
+                    field.Set(reflect.ValueOf(nr))
+                }
+            }
+        }
+        break
+    case reflect.TypeOf(low.NodeReference[int]{}):
+        if valueNode != nil {
+            if IsNodeIntValue(valueNode) {
+                if field.CanSet() {
+                    fv, _ := strconv.Atoi(valueNode.Value)
+                    nr := low.NodeReference[int]{Value: fv, Node: valueNode}
+                    field.Set(reflect.ValueOf(nr))
+                }
+            }
+        }
+        break
+    case reflect.TypeOf(low.NodeReference[int64]{}):
+        if valueNode != nil {
+            if IsNodeIntValue(valueNode) {
+                if field.CanSet() {
+                    fv, _ := strconv.Atoi(valueNode.Value)
+                    nr := low.NodeReference[int64]{Value: int64(fv), Node: valueNode}
+                    field.Set(reflect.ValueOf(nr))
+                }
+            }
+        }
+        break
+    case reflect.TypeOf(low.NodeReference[float32]{}):
+        if valueNode != nil {
+            if IsNodeFloatValue(valueNode) {
+                if field.CanSet() {
+                    fv, _ := strconv.ParseFloat(valueNode.Value, 32)
+                    nr := low.NodeReference[float32]{Value: float32(fv), Node: valueNode}
+                    field.Set(reflect.ValueOf(nr))
+                }
+            }
+        }
+        break
+    case reflect.TypeOf(low.NodeReference[float64]{}):
+        if valueNode != nil {
+            if IsNodeFloatValue(valueNode) {
+                if field.CanSet() {
+                    fv, _ := strconv.ParseFloat(valueNode.Value, 64)
+                    nr := low.NodeReference[float64]{Value: fv, Node: valueNode}
+                    field.Set(reflect.ValueOf(nr))
+                }
+            }
+        }
+        break
+    case reflect.TypeOf([]low.NodeReference[string]{}):
+        if valueNode != nil {
+            if IsNodeArray(valueNode) {
+                if field.CanSet() {
+                    var items []low.NodeReference[string]
+                    for _, sliceItem := range valueNode.Content {
+                        items = append(items, low.NodeReference[string]{Value: sliceItem.Value, Node: sliceItem})
+                    }
+                    field.Set(reflect.ValueOf(items))
+                }
+            }
+        }
+        break
+    case reflect.TypeOf([]low.NodeReference[float32]{}):
+        if valueNode != nil {
+            if IsNodeArray(valueNode) {
+                if field.CanSet() {
+                    var items []low.NodeReference[float32]
+                    for _, sliceItem := range valueNode.Content {
+                        fv, _ := strconv.ParseFloat(sliceItem.Value, 32)
+                        items = append(items, low.NodeReference[float32]{Value: float32(fv), Node: sliceItem})
+                    }
+                    field.Set(reflect.ValueOf(items))
+                }
+            }
+        }
+        break
+    case reflect.TypeOf([]low.NodeReference[float64]{}):
+        if valueNode != nil {
+            if IsNodeArray(valueNode) {
+                if field.CanSet() {
+                    var items []low.NodeReference[float64]
+                    for _, sliceItem := range valueNode.Content {
+                        fv, _ := strconv.ParseFloat(sliceItem.Value, 64)
+                        items = append(items, low.NodeReference[float64]{Value: fv, Node: sliceItem})
+                    }
+                    field.Set(reflect.ValueOf(items))
+                }
+            }
+        }
+        break
+    case reflect.TypeOf([]low.NodeReference[int]{}):
+        if valueNode != nil {
+            if IsNodeArray(valueNode) {
+                if field.CanSet() {
+                    var items []low.NodeReference[int]
+                    for _, sliceItem := range valueNode.Content {
+                        iv, _ := strconv.Atoi(sliceItem.Value)
+                        items = append(items, low.NodeReference[int]{Value: iv, Node: sliceItem})
+                    }
+                    field.Set(reflect.ValueOf(items))
+                }
+            }
+        }
+        break
+    case reflect.TypeOf([]low.NodeReference[bool]{}):
+        if valueNode != nil {
+            if IsNodeArray(valueNode) {
+                if field.CanSet() {
+                    var items []low.NodeReference[bool]
+                    for _, sliceItem := range valueNode.Content {
+                        bv, _ := strconv.ParseBool(sliceItem.Value)
+                        items = append(items, low.NodeReference[bool]{Value: bv, Node: sliceItem})
+                    }
+                    field.Set(reflect.ValueOf(items))
+                }
+            }
+        }
+        break
+    default:
+        m := field.Type()
+        fmt.Printf("error, unknown type!!! %v", m)
+        return fmt.Errorf("unknown type, cannot parse: %v", m)
+    }
+    return nil
+}

utils/model_builder_test.go

@@ -9,12 +9,19 @@ import (
 
 type hotdog struct {
     Name            low.NodeReference[string]
-    Beef    low.NodeReference[bool]
     Fat             low.NodeReference[int]
     Ketchup         low.NodeReference[float32]
     Mustard         low.NodeReference[float64]
     Grilled         low.NodeReference[bool]
     MaxTemp         low.NodeReference[int]
+    Drinks          []low.NodeReference[string]
+    Sides           []low.NodeReference[float32]
+    BigSides        []low.NodeReference[float64]
+    Temps           []low.NodeReference[int]
+    Buns            []low.NodeReference[bool]
+    UnknownElements low.ObjectReference
+    LotsOfUnknowns  []low.ObjectReference
+    Where           map[string]low.ObjectReference
 }
 
 func (h hotdog) Build(node *yaml.Node) {
@@ -28,8 +35,46 @@ beef: true
 fat: 200
 ketchup: 200.45
 mustard: 324938249028.98234892374892374923874823974
-grilled: false
+grilled: true
 maxTemp: 250
+drinks:
+  - nice
+  - rice
+  - spice
+sides:
+  - 0.23
+  - 22.23
+  - 99.45
+  - 22311.2234
+bigSides:
+  - 98237498.9872349872349872349872347982734927342983479234234234234234234
+  - 9827347234234.982374982734987234987
+  - 234234234.234982374982347982374982374982347
+  - 987234987234987234982734.987234987234987234987234987234987234987234982734982734982734987234987234987234987
+temps: 
+  - 1
+  - 2
+buns:
+ - true
+ - false
+unknownElements:
+  well:
+    whoKnows: not me?
+  doYou:
+    love: beerToo?
+lotsOfUnknowns:
+  - wow:
+      what: aTrip
+  - amazing:
+      french: fries
+  - amazing:
+      french: fries
+where:
+  things:
+    are:
+      wild: out here
+  howMany:
+    bears: 200
 `
 
     var rootNode yaml.Node
@@ -40,10 +85,18 @@ maxTemp: 250
     cErr := BuildModel(&rootNode, &hd)
     assert.Equal(t, 200, hd.Fat.Value)
     assert.Equal(t, 3, hd.Fat.Node.Line)
-    assert.Equal(t, true, hd.Beef.Value)
+    assert.Equal(t, true, hd.Grilled.Value)
     assert.Equal(t, "yummy", hd.Name.Value)
     assert.Equal(t, float32(200.45), hd.Ketchup.Value)
+    assert.Len(t, hd.Drinks, 3)
+    assert.Len(t, hd.Sides, 4)
+    assert.Len(t, hd.BigSides, 4)
+    assert.Len(t, hd.Temps, 2)
+    assert.Equal(t, 2, hd.Temps[1].Value)
+    assert.Equal(t, 24, hd.Temps[1].Node.Line)
+    assert.Len(t, hd.UnknownElements.Value, 2)
+    assert.Len(t, hd.LotsOfUnknowns, 3)
+    assert.Len(t, hd.Where, 2)
     assert.Equal(t, 324938249028.98234892374892374923874823974, hd.Mustard.Value)
     assert.NoError(t, cErr)
-
 }

utils/utils.go

@@ -3,12 +3,16 @@ package utils
 import (
     "encoding/json"
     "fmt"
+    "github.com/iancoleman/strcase"
     "github.com/vmware-labs/yaml-jsonpath/pkg/yamlpath"
     "gopkg.in/yaml.v3"
+    "regexp"
     "strconv"
     "strings"
 )
 
+type Case int8
+
 const (
     // OpenApi3 is used by all OpenAPI 3+ docs
     OpenApi3 = "openapi"
@@ -18,6 +22,14 @@ const (
 
     // AsyncApi is used by akk AsyncAPI docs, all versions.
     AsyncApi = "asyncapi"
+
+    PascalCase Case = iota
+    CamelCase
+    ScreamingSnakeCase
+    SnakeCase
+    KebabCase
+    ScreamingKebabCase
+    RegularCase
 )
 
 // FindNodes will find a node based on JSONPath, it accepts raw yaml/json as input.
@@ -439,3 +451,56 @@ func RenderCodeSnippet(startNode *yaml.Node, specData []string, before, after in
 
     return buf.String()
 }
+
+func ConvertCase(input string, convert Case) string {
+    if input == "" {
+        return ""
+    }
+    switch convert {
+    case PascalCase:
+        return strcase.ToCamel(input)
+    case CamelCase:
+        return strcase.ToLowerCamel(input)
+    case ScreamingKebabCase:
+        return strcase.ToScreamingKebab(input)
+    case ScreamingSnakeCase:
+        return strcase.ToScreamingSnake(input)
+    case SnakeCase:
+        return strcase.ToSnake(input)
+    default:
+        return input
+    }
+}
+
+func DetectCase(input string) Case {
+    trim := strings.TrimSpace(input)
+    if trim == "" {
+        return -1
+    }
+
+    pascalCase := regexp.MustCompile("^[A-Z][a-z]+(?:[A-Z][a-z]+)*$")
+    camelCase := regexp.MustCompile("^[a-z]+(?:[A-Z][a-z]+)*$")
+    screamingSnakeCase := regexp.MustCompile("^[A-Z]+(_[A-Z]+)*$")
+    snakeCase := regexp.MustCompile("^[a-z]+(_[a-z]+)*$")
+    kebabCase := regexp.MustCompile("^[a-z]+(-[a-z]+)*$")
+    screamingKebabCase := regexp.MustCompile("^[A-Z]+(-[A-Z]+)*$")
+    if pascalCase.MatchString(trim) {
+        return PascalCase
+    }
+    if camelCase.MatchString(trim) {
+        return CamelCase
+    }
+    if screamingSnakeCase.MatchString(trim) {
+        return ScreamingSnakeCase
+    }
+    if snakeCase.MatchString(trim) {
+        return SnakeCase
+    }
+    if kebabCase.MatchString(trim) {
+        return KebabCase
+    }
+    if screamingKebabCase.MatchString(trim) {
+        return ScreamingKebabCase
+    }
+    return RegularCase
+}

utils/utils_test.go

@@ -419,3 +419,23 @@ func TestConvertComponentIdIntoPath(t *testing.T) {
     assert.Equal(t, "$.chicken.chips.pizza.cake", path)
     assert.Equal(t, "cake", segment)
 }
+
+func TestDetectCase(t *testing.T) {
+    assert.Equal(t, PascalCase, DetectCase("PizzaPie"))
+    assert.Equal(t, CamelCase, DetectCase("anyoneForTennis"))
+    assert.Equal(t, ScreamingSnakeCase, DetectCase("I_LOVE_BEER"))
+    assert.Equal(t, ScreamingKebabCase, DetectCase("I-LOVE-BURGERS"))
+    assert.Equal(t, SnakeCase, DetectCase("snakes_on_a_plane"))
+    assert.Equal(t, KebabCase, DetectCase("chicken-be-be-beef-or-pork"))
+    assert.Equal(t, RegularCase, DetectCase("kebab-TimeIn_london-TOWN"))
+}
+
+func TestConvertCase(t *testing.T) {
+    str1 := "chicken-nuggets-chicken-soup"
+    assert.Equal(t, "chickenNuggetsChickenSoup", ConvertCase(str1, CamelCase))
+    assert.Equal(t, "ChickenNuggetsChickenSoup", ConvertCase(str1, PascalCase))
+    assert.Equal(t, "chicken_nuggets_chicken_soup", ConvertCase(str1, SnakeCase))
+    assert.Equal(t, str1, ConvertCase(str1, KebabCase))
+    assert.Equal(t, "CHICKEN-NUGGETS-CHICKEN-SOUP", ConvertCase(str1, ScreamingKebabCase))
+    assert.Equal(t, "CHICKEN_NUGGETS_CHICKEN_SOUP", ConvertCase(str1, ScreamingSnakeCase))
+}