Enables jsonpointer support in openapi3

Allows for jsonpointer lookups via github.com/go-openapi/jsonpointer

go.mod

@@ -4,6 +4,7 @@ go 1.14
 
 require (
 	github.com/ghodss/yaml v1.0.0
+	github.com/go-openapi/jsonpointer v0.19.5
 	github.com/stretchr/testify v1.5.1
 	gopkg.in/yaml.v2 v2.3.0 // indirect
 )

go.sum

@@ -1,14 +1,28 @@
 github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/ghodss/yaml v1.0.0 h1:wQHKEahhL6wmXdzwWG11gIVCkOv05bNOh+Rxn0yngAk=
 github.com/ghodss/yaml v1.0.0/go.mod h1:4dBDuWmgqj2HViK6kFavaiC9ZROes6MMH2rRYeMEF04=
+github.com/go-openapi/jsonpointer v0.19.5 h1:gZr+CIYByUqjcgeLXnQu2gHYQC9o73G2XUeOFYEICuY=
+github.com/go-openapi/jsonpointer v0.19.5/go.mod h1:Pl9vOtqEWErmShwVjC8pYs9cog34VGT37dQOVbmoatg=
+github.com/go-openapi/swag v0.19.5 h1:lTz6Ys4CmqqCQmZPBlbQENR1/GucA2bzYTE12Pw4tFY=
+github.com/go-openapi/swag v0.19.5/go.mod h1:POnQmlKehdgb5mhVOsnJFsivZCEZ/vjK9gh66Z9tfKk=
+github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
+github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
+github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
+github.com/mailru/easyjson v0.0.0-20190614124828-94de47d64c63/go.mod h1:C1wdFJiN94OJF2b5HbByQZoLdCWB1Yqtg26g4irojpc=
+github.com/mailru/easyjson v0.0.0-20190626092158-b2ccc519800e h1:hB2xlXdHp/pmPZq0y3QnmWAArdw9PqbmotexnWx/FU8=
+github.com/mailru/easyjson v0.0.0-20190626092158-b2ccc519800e/go.mod h1:C1wdFJiN94OJF2b5HbByQZoLdCWB1Yqtg26g4irojpc=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
 github.com/stretchr/testify v1.5.1 h1:nOGnQDM7FYENwehXlg/kFVnos3rEvtKTjRvOWSzb6H4=
 github.com/stretchr/testify v1.5.1/go.mod h1:5W2xD1RspED5o8YsWQXVCued0rvSQ+mT+I5cxcmMvtA=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.3.0 h1:clyUAQHOM3G0M3f5vQj7LuJrETvjVot3Z5el9nffUtU=
 gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=

openapi3/callback.go

@@ -1,6 +1,23 @@
 package openapi3
 
-import "context"
+import (
+	"context"
+	"fmt"
+)
+
+type Callbacks map[string]*CallbackRef
+
+func (c Callbacks) JSONLookup(token string) (interface{}, error) {
+	ref, ok := c[token]
+	if ok == false {
+		return nil, fmt.Errorf("object has no field %q", token)
+	}
+
+	if ref.Ref != "" {
+		return &Ref{Ref: ref.Ref}, nil
+	}
+	return ref.Value, nil
+}
 
 // Callback is specified by OpenAPI/Swagger standard version 3.0.
 type Callback map[string]*PathItem

openapi3/components.go

@@ -11,15 +11,15 @@ import (
 // Components is specified by OpenAPI/Swagger standard version 3.0.
 type Components struct {
 	ExtensionProps
-	Schemas         map[string]*SchemaRef         `json:"schemas,omitempty" yaml:"schemas,omitempty"`
-	Parameters      map[string]*ParameterRef      `json:"parameters,omitempty" yaml:"parameters,omitempty"`
-	Headers         map[string]*HeaderRef         `json:"headers,omitempty" yaml:"headers,omitempty"`
-	RequestBodies   map[string]*RequestBodyRef    `json:"requestBodies,omitempty" yaml:"requestBodies,omitempty"`
-	Responses       map[string]*ResponseRef       `json:"responses,omitempty" yaml:"responses,omitempty"`
-	SecuritySchemes map[string]*SecuritySchemeRef `json:"securitySchemes,omitempty" yaml:"securitySchemes,omitempty"`
-	Examples        map[string]*ExampleRef        `json:"examples,omitempty" yaml:"examples,omitempty"`
-	Links           map[string]*LinkRef           `json:"links,omitempty" yaml:"links,omitempty"`
-	Callbacks       map[string]*CallbackRef       `json:"callbacks,omitempty" yaml:"callbacks,omitempty"`
+	Schemas         SchemaMap       `json:"schemas,omitempty" yaml:"schemas,omitempty"`
+	Parameters      ParametersMap   `json:"parameters,omitempty" yaml:"parameters,omitempty"`
+	Headers         Headers         `json:"headers,omitempty" yaml:"headers,omitempty"`
+	RequestBodies   RequestBodies   `json:"requestBodies,omitempty" yaml:"requestBodies,omitempty"`
+	Responses       Responses       `json:"responses,omitempty" yaml:"responses,omitempty"`
+	SecuritySchemes SecuritySchemes `json:"securitySchemes,omitempty" yaml:"securitySchemes,omitempty"`
+	Examples        Examples        `json:"examples,omitempty" yaml:"examples,omitempty"`
+	Links           Links           `json:"links,omitempty" yaml:"links,omitempty"`
+	Callbacks       Callbacks       `json:"callbacks,omitempty" yaml:"callbacks,omitempty"`
 }
 
 func NewComponents() Components {

openapi3/encoding.go

@@ -11,11 +11,11 @@ import (
 type Encoding struct {
 	ExtensionProps
 
-	ContentType   string                `json:"contentType,omitempty" yaml:"contentType,omitempty"`
-	Headers       map[string]*HeaderRef `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"`
+	ContentType   string  `json:"contentType,omitempty" yaml:"contentType,omitempty"`
+	Headers       Headers `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"`
 }
 
 func NewEncoding() *Encoding {

openapi3/examples.go

@@ -1,9 +1,25 @@
 package openapi3
 
 import (
+	"fmt"
+
 	"github.com/getkin/kin-openapi/jsoninfo"
 )
 
+type Examples map[string]*ExampleRef
+
+func (e Examples) JSONLookup(token string) (interface{}, error) {
+	ref, ok := e[token]
+	if ok == false {
+		return nil, fmt.Errorf("object has no field %q", token)
+	}
+
+	if ref != nil && ref.Ref != "" {
+		return &Ref{Ref: ref.Ref}, nil
+	}
+	return ref.Value, nil
+}
+
 // Example is specified by OpenAPI/Swagger 3.0 standard.
 type Example struct {
 	ExtensionProps

openapi3/header.go

@@ -2,21 +2,37 @@ package openapi3
 
 import (
 	"context"
+	"fmt"
 
 	"github.com/getkin/kin-openapi/jsoninfo"
+	"github.com/go-openapi/jsonpointer"
 )
 
+type Headers map[string]*HeaderRef
+
+func (h Headers) JSONLookup(token string) (interface{}, error) {
+	ref, ok := h[token]
+	if ok == false {
+		return nil, fmt.Errorf("object has no field %q", token)
+	}
+
+	if ref != nil && ref.Ref != "" {
+		return &Ref{Ref: ref.Ref}, nil
+	}
+	return ref.Value, nil
+}
+
 type Header struct {
 	ExtensionProps
 
 	// Optional description. Should use CommonMark syntax.
-	Description string                 `json:"description,omitempty" yaml:"description,omitempty"`
-	Deprecated  bool                   `json:"deprecated,omitempty" yaml:"deprecated,omitempty"`
-	Required    bool                   `json:"required,omitempty" yaml:"required,omitempty"`
-	Schema      *SchemaRef             `json:"schema,omitempty" yaml:"schema,omitempty"`
-	Example     interface{}            `json:"example,omitempty" yaml:"example,omitempty"`
-	Examples    map[string]*ExampleRef `json:"examples,omitempty" yaml:"examples,omitempty"`
-	Content     Content                `json:"content,omitempty" yaml:"content,omitempty"`
+	Description string      `json:"description,omitempty" yaml:"description,omitempty"`
+	Deprecated  bool        `json:"deprecated,omitempty" yaml:"deprecated,omitempty"`
+	Required    bool        `json:"required,omitempty" yaml:"required,omitempty"`
+	Schema      *SchemaRef  `json:"schema,omitempty" yaml:"schema,omitempty"`
+	Example     interface{} `json:"example,omitempty" yaml:"example,omitempty"`
+	Examples    Examples    `json:"examples,omitempty" yaml:"examples,omitempty"`
+	Content     Content     `json:"content,omitempty" yaml:"content,omitempty"`
 }
 
 func (value *Header) UnmarshalJSON(data []byte) error {
@@ -31,3 +47,30 @@ func (value *Header) Validate(c context.Context) error {
 	}
 	return nil
 }
+
+func (value Header) JSONLookup(token string) (interface{}, error) {
+	switch token {
+	case "schema":
+		if value.Schema != nil {
+			if value.Schema.Ref != "" {
+				return &Ref{Ref: value.Schema.Ref}, nil
+			}
+			return value.Schema.Value, nil
+		}
+	case "description":
+		return value.Description, nil
+	case "depreciated":
+		return value.Deprecated, nil
+	case "required":
+		return value.Required, nil
+	case "example":
+		return value.Example, nil
+	case "examples":
+		return value.Examples, nil
+	case "content":
+		return value.Content, nil
+	}
+
+	v, _, err := jsonpointer.GetForToken(value.ExtensionProps, token)
+	return v, err
+}

openapi3/link.go

@@ -8,6 +8,20 @@ import (
 	"github.com/getkin/kin-openapi/jsoninfo"
 )
 
+type Links map[string]*LinkRef
+
+func (l Links) JSONLookup(token string) (interface{}, error) {
+	ref, ok := l[token]
+	if ok == false {
+		return nil, fmt.Errorf("object has no field %q", token)
+	}
+
+	if ref != nil && ref.Ref != "" {
+		return &Ref{Ref: ref.Ref}, nil
+	}
+	return ref.Value, nil
+}
+
 // Link is specified by OpenAPI/Swagger standard version 3.0.
 type Link struct {
 	ExtensionProps

openapi3/media_type.go

@@ -4,16 +4,17 @@ import (
 	"context"
 
 	"github.com/getkin/kin-openapi/jsoninfo"
+	"github.com/go-openapi/jsonpointer"
 )
 
 // MediaType is specified by OpenAPI/Swagger 3.0 standard.
 type MediaType struct {
 	ExtensionProps
 
-	Schema   *SchemaRef             `json:"schema,omitempty" yaml:"schema,omitempty"`
-	Example  interface{}            `json:"example,omitempty" yaml:"example,omitempty"`
-	Examples map[string]*ExampleRef `json:"examples,omitempty" yaml:"examples,omitempty"`
-	Encoding map[string]*Encoding   `json:"encoding,omitempty" yaml:"encoding,omitempty"`
+	Schema   *SchemaRef           `json:"schema,omitempty" yaml:"schema,omitempty"`
+	Example  interface{}          `json:"example,omitempty" yaml:"example,omitempty"`
+	Examples Examples             `json:"examples,omitempty" yaml:"examples,omitempty"`
+	Encoding map[string]*Encoding `json:"encoding,omitempty" yaml:"encoding,omitempty"`
 }
 
 func NewMediaType() *MediaType {
@@ -75,3 +76,23 @@ func (mediaType *MediaType) Validate(c context.Context) error {
 	}
 	return nil
 }
+
+func (mediaType MediaType) JSONLookup(token string) (interface{}, error) {
+	switch token {
+	case "schema":
+		if mediaType.Schema != nil {
+			if mediaType.Schema.Ref != "" {
+				return &Ref{Ref: mediaType.Schema.Ref}, nil
+			}
+			return mediaType.Schema.Value, nil
+		}
+	case "example":
+		return mediaType.Example, nil
+	case "examples":
+		return mediaType.Examples, nil
+	case "encoding":
+		return mediaType.Encoding, nil
+	}
+	v, _, err := jsonpointer.GetForToken(mediaType.ExtensionProps, token)
+	return v, err
+}

openapi3/operation.go

@@ -6,6 +6,7 @@ import (
 	"strconv"
 
 	"github.com/getkin/kin-openapi/jsoninfo"
+	"github.com/go-openapi/jsonpointer"
 )
 
 // Operation represents "operation" specified by" OpenAPI/Swagger 3.0 standard.
@@ -34,7 +35,7 @@ type Operation struct {
 	Responses Responses `json:"responses" yaml:"responses"` // Required
 
 	// Optional callbacks
-	Callbacks map[string]*CallbackRef `json:"callbacks,omitempty" yaml:"callbacks,omitempty"`
+	Callbacks Callbacks `json:"callbacks,omitempty" yaml:"callbacks,omitempty"`
 
 	Deprecated bool `json:"deprecated,omitempty" yaml:"deprecated,omitempty"`
 
@@ -59,6 +60,43 @@ func (operation *Operation) UnmarshalJSON(data []byte) error {
 	return jsoninfo.UnmarshalStrictStruct(data, operation)
 }
 
+func (operation Operation) JSONLookup(token string) (interface{}, error) {
+	switch token {
+	case "requestBody":
+		if operation.RequestBody != nil {
+			if operation.RequestBody.Ref != "" {
+				return &Ref{Ref: operation.RequestBody.Ref}, nil
+			}
+			return operation.RequestBody.Value, nil
+		}
+	case "tags":
+		return operation.Tags, nil
+	case "summary":
+		return operation.Summary, nil
+	case "description":
+		return operation.Description, nil
+	case "operationID":
+		return operation.OperationID, nil
+	case "parameters":
+		return operation.Parameters, nil
+	case "responses":
+		return operation.Responses, nil
+	case "callbacks":
+		return operation.Callbacks, nil
+	case "deprecated":
+		return operation.Deprecated, nil
+	case "security":
+		return operation.Security, nil
+	case "servers":
+		return operation.Servers, nil
+	case "externalDocs":
+		return operation.ExternalDocs, nil
+	}
+
+	v, _, err := jsonpointer.GetForToken(operation.ExtensionProps, token)
+	return v, err
+}
+
 func (operation *Operation) AddParameter(p *Parameter) {
 	operation.Parameters = append(operation.Parameters, &ParameterRef{
 		Value: p,