1package ast
 2
 3type DefinitionKind string
 4
 5const (
 6	Scalar      DefinitionKind = "SCALAR"
 7	Object      DefinitionKind = "OBJECT"
 8	Interface   DefinitionKind = "INTERFACE"
 9	Union       DefinitionKind = "UNION"
10	Enum        DefinitionKind = "ENUM"
11	InputObject DefinitionKind = "INPUT_OBJECT"
12)
13
14// ObjectDefinition is the core type definition object, it includes all of the definable types
15// but does *not* cover schema or directives.
16//
17// @vektah: Javascript implementation has different types for all of these, but they are
18// more similar than different and don't define any behaviour. I think this style of
19// "some hot" struct works better, at least for go.
20//
21// Type extensions are also represented by this same struct.
22type Definition struct {
23	Kind        DefinitionKind
24	Description string
25	Name        string
26	Directives  DirectiveList
27	Interfaces  []string      // object and input object
28	Fields      FieldList     // object and input object
29	Types       []string      // union
30	EnumValues  EnumValueList // enum
31
32	Position *Position `dump:"-"`
33	BuiltIn  bool      `dump:"-"`
34}
35
36func (d *Definition) IsLeafType() bool {
37	return d.Kind == Enum || d.Kind == Scalar
38}
39
40func (d *Definition) IsAbstractType() bool {
41	return d.Kind == Interface || d.Kind == Union
42}
43
44func (d *Definition) IsCompositeType() bool {
45	return d.Kind == Object || d.Kind == Interface || d.Kind == Union
46}
47
48func (d *Definition) IsInputType() bool {
49	return d.Kind == Scalar || d.Kind == Enum || d.Kind == InputObject
50}
51
52func (d *Definition) OneOf(types ...string) bool {
53	for _, t := range types {
54		if d.Name == t {
55			return true
56		}
57	}
58	return false
59}
60
61type FieldDefinition struct {
62	Description  string
63	Name         string
64	Arguments    ArgumentDefinitionList // only for objects
65	DefaultValue *Value                 // only for input objects
66	Type         *Type
67	Directives   DirectiveList
68	Position     *Position `dump:"-"`
69}
70
71type ArgumentDefinition struct {
72	Description  string
73	Name         string
74	DefaultValue *Value
75	Type         *Type
76	Directives   DirectiveList
77	Position     *Position `dump:"-"`
78}
79
80type EnumValueDefinition struct {
81	Description string
82	Name        string
83	Directives  DirectiveList
84	Position    *Position `dump:"-"`
85}
86
87type DirectiveDefinition struct {
88	Description string
89	Name        string
90	Arguments   ArgumentDefinitionList
91	Locations   []DirectiveLocation
92	Position    *Position `dump:"-"`
93}