Refactored version directory names

3.0 and 2.0 do not work, there are multiple versions and anything with a period in it sucks from my point of view, v2 and v3 feel much better from a DX perspective.

datamodel/low/v2/parameter.go

@@ -0,0 +1,96 @@
+// Copyright 2022 Princess B33f Heavy Industries / Dave Shanley
+// SPDX-License-Identifier: MIT
+
+package v2
+
+import (
+	"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"
+)
+
+const (
+	ParametersLabel = "parameters"
+)
+
+type Parameter struct {
+	Name             low.NodeReference[string]
+	In               low.NodeReference[string]
+	Type             low.NodeReference[string]
+	Format           low.NodeReference[string]
+	Description      low.NodeReference[string]
+	Required         low.NodeReference[bool]
+	AllowEmptyValue  low.NodeReference[bool]
+	Schema           low.NodeReference[*base.SchemaProxy]
+	Items            low.NodeReference[*Items]
+	CollectionFormat low.NodeReference[string]
+	Default          low.NodeReference[any]
+	Maximum          low.NodeReference[int]
+	ExclusiveMaximum low.NodeReference[bool]
+	Minimum          low.NodeReference[int]
+	ExclusiveMinimum low.NodeReference[bool]
+	MaxLength        low.NodeReference[int]
+	MinLength        low.NodeReference[int]
+	Pattern          low.NodeReference[string]
+	MaxItems         low.NodeReference[int]
+	MinItems         low.NodeReference[int]
+	UniqueItems      low.NodeReference[bool]
+	Enum             low.NodeReference[[]low.ValueReference[string]]
+	MultipleOf       low.NodeReference[int]
+	Extensions       map[low.KeyReference[string]]low.ValueReference[any]
+}
+
+func (p *Parameter) FindExtension(ext string) *low.ValueReference[any] {
+	return low.FindItemInMap[any](ext, p.Extensions)
+}
+
+func (p *Parameter) Build(root *yaml.Node, idx *index.SpecIndex) error {
+	p.Extensions = low.ExtractExtensions(root)
+	sch, sErr := base.ExtractSchema(root, idx)
+	if sErr != nil {
+		return sErr
+	}
+	if sch != nil {
+		p.Schema = *sch
+	}
+	items, iErr := low.ExtractObject[*Items](ItemsLabel, root, idx)
+	if iErr != nil {
+		return iErr
+	}
+	p.Items = items
+
+	_, ln, vn := utils.FindKeyNodeFull(DefaultLabel, root.Content)
+	if vn != nil {
+		var n map[string]interface{}
+		err := vn.Decode(&n)
+		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,
+		}
+		return nil
+	}
+	return nil
+}