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ast_variable_definition.go
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/
ast_variable_definition.go
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package ast
import (
"bytes"
"github.com/dchukmasov/graphql-go-tools/internal/pkg/unsafebytes"
"github.com/dchukmasov/graphql-go-tools/pkg/lexer/position"
)
type VariableDefinitionList struct {
LPAREN position.Position // (
Refs []int // VariableDefinition
RPAREN position.Position // )
}
// VariableDefinition
// example:
// $devicePicSize: Int = 100 @small
type VariableDefinition struct {
VariableValue Value // $ Name
Colon position.Position // :
Type int // e.g. String
DefaultValue DefaultValue // optional, e.g. = "Default"
HasDirectives bool
Directives DirectiveList // optional, e.g. @foo
}
func (d *Document) VariableDefinitionNameBytes(ref int) ByteSlice {
return d.VariableValueNameBytes(d.VariableDefinitions[ref].VariableValue.Ref)
}
func (d *Document) VariableDefinitionNameString(ref int) string {
return unsafebytes.BytesToString(d.VariableValueNameBytes(d.VariableDefinitions[ref].VariableValue.Ref))
}
func (d *Document) VariableDefinitionHasDefaultValue(ref int) bool {
return d.VariableDefinitions[ref].DefaultValue.IsDefined
}
func (d *Document) VariableDefinitionDefaultValue(ref int) Value {
return d.VariableDefinitions[ref].DefaultValue.Value
}
func (d *Document) VariableDefinitionByNameAndOperation(operationDefinition int, name ByteSlice) (definition int, exists bool) {
if !d.OperationDefinitions[operationDefinition].HasVariableDefinitions {
return -1, false
}
for _, i := range d.OperationDefinitions[operationDefinition].VariableDefinitions.Refs {
definitionName := d.VariableValueNameBytes(d.VariableDefinitions[i].VariableValue.Ref)
if bytes.Equal(name, definitionName) {
return i, true
}
}
return -1, false
}
func (d *Document) VariableDefinitionsBefore(variableDefinition int) bool {
for i := range d.OperationDefinitions {
for j, k := range d.OperationDefinitions[i].VariableDefinitions.Refs {
if k == variableDefinition {
return j != 0
}
}
}
return false
}
func (d *Document) VariableDefinitionsAfter(variableDefinition int) bool {
for i := range d.OperationDefinitions {
for j, k := range d.OperationDefinitions[i].VariableDefinitions.Refs {
if k == variableDefinition {
return j != len(d.OperationDefinitions[i].VariableDefinitions.Refs)-1
}
}
}
return false
}