1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
|
-- | This module defines an abstract syntax tree for the @GraphQL@ language based on
-- <https://facebook.github.io/graphql/ Facebook's GraphQL Specification>.
--
-- Target AST for Parser.
module Language.GraphQL.AST
( Alias
, Argument(..)
, Arguments
, Definition(..)
, Directive(..)
, Directives
, Document
, Field(..)
, FragmentDefinition(..)
, FragmentName
, FragmentSpread(..)
, InlineFragment(..)
, Name
, NonNullType(..)
, ObjectField(..)
, OperationDefinition(..)
, OperationType(..)
, Selection(..)
, SelectionSet
, SelectionSetOpt
, Type(..)
, TypeCondition
, Value(..)
, VariableDefinition(..)
, VariableDefinitions
) where
import Data.Int (Int32)
import Data.List.NonEmpty (NonEmpty)
import Data.Text (Text)
import Language.GraphQL.AST.Core ( Alias
, Name
, TypeCondition
)
-- * Document
-- | GraphQL document.
type Document = NonEmpty Definition
-- * Operations
-- | Top-level definition of a document, either an operation or a fragment.
data Definition
= DefinitionOperation OperationDefinition
| DefinitionFragment FragmentDefinition
deriving (Eq, Show)
-- | Operation definition.
data OperationDefinition
= OperationSelectionSet SelectionSet
| OperationDefinition OperationType
(Maybe Name)
[VariableDefinition]
[Directive]
SelectionSet
deriving (Eq, Show)
-- | GraphQL has 3 operation types: queries, mutations and subscribtions.
--
-- Currently only queries and mutations are supported.
data OperationType = Query | Mutation deriving (Eq, Show)
-- * Selections
-- | "Top-level" selection, selection on a operation.
type SelectionSet = NonEmpty Selection
-- | Field selection.
type SelectionSetOpt = [Selection]
-- | Single selection element.
data Selection
= SelectionField Field
| SelectionFragmentSpread FragmentSpread
| SelectionInlineFragment InlineFragment
deriving (Eq, Show)
-- * Field
-- | GraphQL field.
data Field
= Field (Maybe Alias) Name [Argument] [Directive] SelectionSetOpt
deriving (Eq, Show)
-- * Arguments
-- | Argument list.
{-# DEPRECATED Arguments "Use [Argument] instead" #-}
type Arguments = [Argument]
-- | Argument.
data Argument = Argument Name Value deriving (Eq,Show)
-- * Fragments
-- | Fragment spread.
data FragmentSpread = FragmentSpread Name [Directive] deriving (Eq, Show)
-- | Inline fragment.
data InlineFragment = InlineFragment (Maybe TypeCondition) [Directive] SelectionSet
deriving (Eq, Show)
-- | Fragment definition.
data FragmentDefinition
= FragmentDefinition Name TypeCondition [Directive] SelectionSet
deriving (Eq, Show)
{-# DEPRECATED FragmentName "Use Name instead" #-}
type FragmentName = Name
-- * Input values
-- | Input value.
data Value = ValueVariable Name
| ValueInt Int32
| ValueFloat Double
| ValueString Text
| ValueBoolean Bool
| ValueNull
| ValueEnum Name
| ValueList [Value]
| ValueObject [ObjectField]
deriving (Eq, Show)
-- | Key-value pair.
--
-- A list of 'ObjectField's represents a GraphQL object type.
data ObjectField = ObjectField Name Value deriving (Eq, Show)
-- * Variables
-- | Variable definition list.
{-# DEPRECATED VariableDefinitions "Use [VariableDefinition] instead" #-}
type VariableDefinitions = [VariableDefinition]
-- | Variable definition.
data VariableDefinition = VariableDefinition Name Type (Maybe Value)
deriving (Eq, Show)
-- * Input types
-- | Type representation.
data Type = TypeNamed Name
| TypeList Type
| TypeNonNull NonNullType
deriving (Eq, Show)
-- | Helper type to represent Non-Null types and lists of such types.
data NonNullType = NonNullTypeNamed Name
| NonNullTypeList Type
deriving (Eq, Show)
-- * Directives
-- | Directive list.
{-# DEPRECATED Directives "Use [Directive] instead" #-}
type Directives = [Directive]
-- | Directive.
data Directive = Directive Name [Argument] deriving (Eq, Show)
|
