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authorMichael Muré <batolettre@gmail.com>2018-09-14 12:40:31 +0200
committerMichael Muré <batolettre@gmail.com>2018-09-14 12:41:59 +0200
commitb478cd1bcb4756b20f7f4b15fcf81f23e1a60a02 (patch)
tree8ce232dcab3dd00708f8ba66c334472457e5980d /vendor/github.com/vektah/gqlparser/parser/schema.go
parenta3fc9abb921f5ce7084d6ab7473442d0b72b1d78 (diff)
downloadgit-bug-b478cd1bcb4756b20f7f4b15fcf81f23e1a60a02.tar.gz
graphql: update gqlgen to 0.5.1
fix #6
Diffstat (limited to 'vendor/github.com/vektah/gqlparser/parser/schema.go')
-rw-r--r--vendor/github.com/vektah/gqlparser/parser/schema.go503
1 files changed, 503 insertions, 0 deletions
diff --git a/vendor/github.com/vektah/gqlparser/parser/schema.go b/vendor/github.com/vektah/gqlparser/parser/schema.go
new file mode 100644
index 00000000..f409f1f4
--- /dev/null
+++ b/vendor/github.com/vektah/gqlparser/parser/schema.go
@@ -0,0 +1,503 @@
+package parser
+
+import (
+ . "github.com/vektah/gqlparser/ast"
+ "github.com/vektah/gqlparser/gqlerror"
+ "github.com/vektah/gqlparser/lexer"
+)
+
+func ParseSchema(source *Source) (*SchemaDocument, *gqlerror.Error) {
+ p := parser{
+ lexer: lexer.New(source),
+ }
+ return p.parseSchemaDocument(), p.err
+}
+
+func (p *parser) parseSchemaDocument() *SchemaDocument {
+ var doc SchemaDocument
+ doc.Position = p.peekPos()
+ for p.peek().Kind != lexer.EOF {
+ if p.err != nil {
+ return nil
+ }
+
+ var description string
+ if p.peek().Kind == lexer.BlockString || p.peek().Kind == lexer.String {
+ description = p.parseDescription()
+ }
+
+ if p.peek().Kind != lexer.Name {
+ p.unexpectedError()
+ break
+ }
+
+ switch p.peek().Value {
+ case "scalar", "type", "interface", "union", "enum", "input":
+ doc.Definitions = append(doc.Definitions, p.parseTypeSystemDefinition(description))
+ case "schema":
+ doc.Schema = append(doc.Schema, p.parseSchemaDefinition(description))
+ case "directive":
+ doc.Directives = append(doc.Directives, p.parseDirectiveDefinition(description))
+ case "extend":
+ if description != "" {
+ p.unexpectedToken(p.prev)
+ }
+ p.parseTypeSystemExtension(&doc)
+ default:
+ p.unexpectedError()
+ return nil
+ }
+ }
+
+ return &doc
+}
+
+func (p *parser) parseDescription() string {
+ token := p.peek()
+
+ if token.Kind != lexer.BlockString && token.Kind != lexer.String {
+ return ""
+ }
+
+ return p.next().Value
+}
+
+func (p *parser) parseTypeSystemDefinition(description string) *Definition {
+ tok := p.peek()
+ if tok.Kind != lexer.Name {
+ p.unexpectedError()
+ return nil
+ }
+
+ switch tok.Value {
+ case "scalar":
+ return p.parseScalarTypeDefinition(description)
+ case "type":
+ return p.parseObjectTypeDefinition(description)
+ case "interface":
+ return p.parseInterfaceTypeDefinition(description)
+ case "union":
+ return p.parseUnionTypeDefinition(description)
+ case "enum":
+ return p.parseEnumTypeDefinition(description)
+ case "input":
+ return p.parseInputObjectTypeDefinition(description)
+ default:
+ p.unexpectedError()
+ return nil
+ }
+}
+
+func (p *parser) parseSchemaDefinition(description string) *SchemaDefinition {
+ p.expectKeyword("schema")
+
+ def := SchemaDefinition{Description: description}
+ def.Position = p.peekPos()
+ def.Description = description
+ def.Directives = p.parseDirectives(true)
+
+ p.many(lexer.BraceL, lexer.BraceR, func() {
+ def.OperationTypes = append(def.OperationTypes, p.parseOperationTypeDefinition())
+ })
+ return &def
+}
+
+func (p *parser) parseOperationTypeDefinition() *OperationTypeDefinition {
+ var op OperationTypeDefinition
+ op.Position = p.peekPos()
+ op.Operation = p.parseOperationType()
+ p.expect(lexer.Colon)
+ op.Type = p.parseName()
+ return &op
+}
+
+func (p *parser) parseScalarTypeDefinition(description string) *Definition {
+ p.expectKeyword("scalar")
+
+ var def Definition
+ def.Position = p.peekPos()
+ def.Kind = Scalar
+ def.Description = description
+ def.Name = p.parseName()
+ def.Directives = p.parseDirectives(true)
+ return &def
+}
+
+func (p *parser) parseObjectTypeDefinition(description string) *Definition {
+ p.expectKeyword("type")
+
+ var def Definition
+ def.Position = p.peekPos()
+ def.Kind = Object
+ def.Description = description
+ def.Name = p.parseName()
+ def.Interfaces = p.parseImplementsInterfaces()
+ def.Directives = p.parseDirectives(true)
+ def.Fields = p.parseFieldsDefinition()
+ return &def
+}
+
+func (p *parser) parseImplementsInterfaces() []string {
+ var types []string
+ if p.peek().Value == "implements" {
+ p.next()
+ // optional leading ampersand
+ p.skip(lexer.Amp)
+
+ types = append(types, p.parseName())
+ for p.skip(lexer.Amp) && p.err == nil {
+ types = append(types, p.parseName())
+ }
+ }
+ return types
+}
+
+func (p *parser) parseFieldsDefinition() FieldList {
+ var defs FieldList
+ p.many(lexer.BraceL, lexer.BraceR, func() {
+ defs = append(defs, p.parseFieldDefinition())
+ })
+ return defs
+}
+
+func (p *parser) parseFieldDefinition() *FieldDefinition {
+ var def FieldDefinition
+ def.Position = p.peekPos()
+ def.Description = p.parseDescription()
+ def.Name = p.parseName()
+ def.Arguments = p.parseArgumentDefs()
+ p.expect(lexer.Colon)
+ def.Type = p.parseTypeReference()
+ def.Directives = p.parseDirectives(true)
+
+ return &def
+}
+
+func (p *parser) parseArgumentDefs() ArgumentDefinitionList {
+ var args ArgumentDefinitionList
+ p.many(lexer.ParenL, lexer.ParenR, func() {
+ args = append(args, p.parseArgumentDef())
+ })
+ return args
+}
+
+func (p *parser) parseArgumentDef() *ArgumentDefinition {
+ var def ArgumentDefinition
+ def.Position = p.peekPos()
+ def.Description = p.parseDescription()
+ def.Name = p.parseName()
+ p.expect(lexer.Colon)
+ def.Type = p.parseTypeReference()
+ if p.skip(lexer.Equals) {
+ def.DefaultValue = p.parseValueLiteral(true)
+ }
+ def.Directives = p.parseDirectives(true)
+ return &def
+}
+
+func (p *parser) parseInputValueDef() *FieldDefinition {
+ var def FieldDefinition
+ def.Position = p.peekPos()
+ def.Description = p.parseDescription()
+ def.Name = p.parseName()
+ p.expect(lexer.Colon)
+ def.Type = p.parseTypeReference()
+ if p.skip(lexer.Equals) {
+ def.DefaultValue = p.parseValueLiteral(true)
+ }
+ def.Directives = p.parseDirectives(true)
+ return &def
+}
+
+func (p *parser) parseInterfaceTypeDefinition(description string) *Definition {
+ p.expectKeyword("interface")
+
+ var def Definition
+ def.Position = p.peekPos()
+ def.Kind = Interface
+ def.Description = description
+ def.Name = p.parseName()
+ def.Directives = p.parseDirectives(true)
+ def.Fields = p.parseFieldsDefinition()
+ return &def
+}
+
+func (p *parser) parseUnionTypeDefinition(description string) *Definition {
+ p.expectKeyword("union")
+
+ var def Definition
+ def.Position = p.peekPos()
+ def.Kind = Union
+ def.Description = description
+ def.Name = p.parseName()
+ def.Directives = p.parseDirectives(true)
+ def.Types = p.parseUnionMemberTypes()
+ return &def
+}
+
+func (p *parser) parseUnionMemberTypes() []string {
+ var types []string
+ if p.skip(lexer.Equals) {
+ // optional leading pipe
+ p.skip(lexer.Pipe)
+
+ types = append(types, p.parseName())
+ for p.skip(lexer.Pipe) && p.err == nil {
+ types = append(types, p.parseName())
+ }
+ }
+ return types
+}
+
+func (p *parser) parseEnumTypeDefinition(description string) *Definition {
+ p.expectKeyword("enum")
+
+ var def Definition
+ def.Position = p.peekPos()
+ def.Kind = Enum
+ def.Description = description
+ def.Name = p.parseName()
+ def.Directives = p.parseDirectives(true)
+ def.EnumValues = p.parseEnumValuesDefinition()
+ return &def
+}
+
+func (p *parser) parseEnumValuesDefinition() EnumValueList {
+ var values EnumValueList
+ p.many(lexer.BraceL, lexer.BraceR, func() {
+ values = append(values, p.parseEnumValueDefinition())
+ })
+ return values
+}
+
+func (p *parser) parseEnumValueDefinition() *EnumValueDefinition {
+ return &EnumValueDefinition{
+ Position: p.peekPos(),
+ Description: p.parseDescription(),
+ Name: p.parseName(),
+ Directives: p.parseDirectives(true),
+ }
+}
+
+func (p *parser) parseInputObjectTypeDefinition(description string) *Definition {
+ p.expectKeyword("input")
+
+ var def Definition
+ def.Position = p.peekPos()
+ def.Kind = InputObject
+ def.Description = description
+ def.Name = p.parseName()
+ def.Directives = p.parseDirectives(true)
+ def.Fields = p.parseInputFieldsDefinition()
+ return &def
+}
+
+func (p *parser) parseInputFieldsDefinition() FieldList {
+ var values FieldList
+ p.many(lexer.BraceL, lexer.BraceR, func() {
+ values = append(values, p.parseInputValueDef())
+ })
+ return values
+}
+
+func (p *parser) parseTypeSystemExtension(doc *SchemaDocument) {
+ p.expectKeyword("extend")
+
+ switch p.peek().Value {
+ case "schema":
+ doc.SchemaExtension = append(doc.SchemaExtension, p.parseSchemaExtension())
+ case "scalar":
+ doc.Extensions = append(doc.Extensions, p.parseScalarTypeExtension())
+ case "type":
+ doc.Extensions = append(doc.Extensions, p.parseObjectTypeExtension())
+ case "interface":
+ doc.Extensions = append(doc.Extensions, p.parseInterfaceTypeExtension())
+ case "union":
+ doc.Extensions = append(doc.Extensions, p.parseUnionTypeExtension())
+ case "enum":
+ doc.Extensions = append(doc.Extensions, p.parseEnumTypeExtension())
+ case "input":
+ doc.Extensions = append(doc.Extensions, p.parseInputObjectTypeExtension())
+ default:
+ p.unexpectedError()
+ }
+}
+
+func (p *parser) parseSchemaExtension() *SchemaDefinition {
+ p.expectKeyword("schema")
+
+ var def SchemaDefinition
+ def.Position = p.peekPos()
+ def.Directives = p.parseDirectives(true)
+ p.many(lexer.BraceL, lexer.BraceR, func() {
+ def.OperationTypes = append(def.OperationTypes, p.parseOperationTypeDefinition())
+ })
+ if len(def.Directives) == 0 && len(def.OperationTypes) == 0 {
+ p.unexpectedError()
+ }
+ return &def
+}
+
+func (p *parser) parseScalarTypeExtension() *Definition {
+ p.expectKeyword("scalar")
+
+ var def Definition
+ def.Position = p.peekPos()
+ def.Kind = Scalar
+ def.Name = p.parseName()
+ def.Directives = p.parseDirectives(true)
+ if len(def.Directives) == 0 {
+ p.unexpectedError()
+ }
+ return &def
+}
+
+func (p *parser) parseObjectTypeExtension() *Definition {
+ p.expectKeyword("type")
+
+ var def Definition
+ def.Position = p.peekPos()
+ def.Kind = Object
+ def.Name = p.parseName()
+ def.Interfaces = p.parseImplementsInterfaces()
+ def.Directives = p.parseDirectives(true)
+ def.Fields = p.parseFieldsDefinition()
+ if len(def.Interfaces) == 0 && len(def.Directives) == 0 && len(def.Fields) == 0 {
+ p.unexpectedError()
+ }
+ return &def
+}
+
+func (p *parser) parseInterfaceTypeExtension() *Definition {
+ p.expectKeyword("interface")
+
+ var def Definition
+ def.Position = p.peekPos()
+ def.Kind = Interface
+ def.Name = p.parseName()
+ def.Directives = p.parseDirectives(true)
+ def.Fields = p.parseFieldsDefinition()
+ if len(def.Directives) == 0 && len(def.Fields) == 0 {
+ p.unexpectedError()
+ }
+ return &def
+}
+
+func (p *parser) parseUnionTypeExtension() *Definition {
+ p.expectKeyword("union")
+
+ var def Definition
+ def.Position = p.peekPos()
+ def.Kind = Union
+ def.Name = p.parseName()
+ def.Directives = p.parseDirectives(true)
+ def.Types = p.parseUnionMemberTypes()
+
+ if len(def.Directives) == 0 && len(def.Types) == 0 {
+ p.unexpectedError()
+ }
+ return &def
+}
+
+func (p *parser) parseEnumTypeExtension() *Definition {
+ p.expectKeyword("enum")
+
+ var def Definition
+ def.Position = p.peekPos()
+ def.Kind = Enum
+ def.Name = p.parseName()
+ def.Directives = p.parseDirectives(true)
+ def.EnumValues = p.parseEnumValuesDefinition()
+ if len(def.Directives) == 0 && len(def.EnumValues) == 0 {
+ p.unexpectedError()
+ }
+ return &def
+}
+
+func (p *parser) parseInputObjectTypeExtension() *Definition {
+ p.expectKeyword("input")
+
+ var def Definition
+ def.Position = p.peekPos()
+ def.Kind = InputObject
+ def.Name = p.parseName()
+ def.Directives = p.parseDirectives(false)
+ def.Fields = p.parseInputFieldsDefinition()
+ if len(def.Directives) == 0 && len(def.Fields) == 0 {
+ p.unexpectedError()
+ }
+ return &def
+}
+
+func (p *parser) parseDirectiveDefinition(description string) *DirectiveDefinition {
+ p.expectKeyword("directive")
+ p.expect(lexer.At)
+
+ var def DirectiveDefinition
+ def.Position = p.peekPos()
+ def.Description = description
+ def.Name = p.parseName()
+ def.Arguments = p.parseArgumentDefs()
+
+ p.expectKeyword("on")
+ def.Locations = p.parseDirectiveLocations()
+ return &def
+}
+
+func (p *parser) parseDirectiveLocations() []DirectiveLocation {
+ p.skip(lexer.Pipe)
+
+ locations := []DirectiveLocation{p.parseDirectiveLocation()}
+
+ for p.skip(lexer.Pipe) && p.err == nil {
+ locations = append(locations, p.parseDirectiveLocation())
+ }
+
+ return locations
+}
+
+func (p *parser) parseDirectiveLocation() DirectiveLocation {
+ name := p.expect(lexer.Name)
+
+ switch name.Value {
+ case `QUERY`:
+ return LocationQuery
+ case `MUTATION`:
+ return LocationMutation
+ case `SUBSCRIPTION`:
+ return LocationSubscription
+ case `FIELD`:
+ return LocationField
+ case `FRAGMENT_DEFINITION`:
+ return LocationFragmentDefinition
+ case `FRAGMENT_SPREAD`:
+ return LocationFragmentSpread
+ case `INLINE_FRAGMENT`:
+ return LocationInlineFragment
+ case `SCHEMA`:
+ return LocationSchema
+ case `SCALAR`:
+ return LocationScalar
+ case `OBJECT`:
+ return LocationObject
+ case `FIELD_DEFINITION`:
+ return LocationFieldDefinition
+ case `ARGUMENT_DEFINITION`:
+ return LocationArgumentDefinition
+ case `INTERFACE`:
+ return LocationInterface
+ case `UNION`:
+ return LocationUnion
+ case `ENUM`:
+ return LocationEnum
+ case `ENUM_VALUE`:
+ return LocationEnumValue
+ case `INPUT_OBJECT`:
+ return LocationInputObject
+ case `INPUT_FIELD_DEFINITION`:
+ return LocationInputFieldDefinition
+ }
+
+ p.unexpectedToken(name)
+ return ""
+}