git.ozlabs.org Git - ccan/blob - ccan/graphql/graphql.h

   1 #ifndef __GRAPHQL_H__
   2 #define __GRAPHQL_H__ 1
   3
   4 #include <stdio.h>
   5
   6 #include <ccan/list/list.h>
   7 #include <ccan/tal/tal.h>
   8
   9 // Coding constants
  10 #define GRAPHQL_SUCCESS 0
  11
  12 // The following structures constitute the AST returned by the parser.
  13
  14 struct graphql_directive {
  15         struct graphql_directive *next;
  16         struct graphql_token *name;
  17         struct graphql_arguments *args;
  18 };
  19
  20 struct graphql_directives {
  21         struct graphql_directive *first;
  22 };
  23
  24 struct graphql_named_type {
  25         struct graphql_token *name;
  26 };
  27
  28 struct graphql_type {
  29         struct graphql_named_type *named;
  30 //      struct graphql_list_type *list;
  31 //      struct graphql_non_null_type *non_null;
  32 };
  33
  34 struct graphql_default_value {
  35         struct graphql_value *val;
  36 };
  37
  38 struct graphql_variable_definition {
  39         struct graphql_variable_definition *next;
  40         struct graphql_variable *var;
  41         struct graphql_type *type;
  42         struct graphql_default_value *default_val;
  43         struct graphql_directives *directives;
  44 };
  45
  46 struct graphql_variable_definitions {
  47         struct graphql_variable_definition *first;
  48 };
  49
  50 struct graphql_variable {
  51         struct graphql_token *name;
  52 };
  53
  54 struct graphql_object_field {
  55         struct graphql_object_field *next;
  56         struct graphql_token *name;
  57         struct graphql_value *val;
  58 };
  59
  60 struct graphql_object_value {
  61         struct graphql_object_field *first;
  62 };
  63
  64 struct graphql_list_value {
  65         struct graphql_token *val;
  66 };
  67
  68 struct graphql_enum_value {
  69         struct graphql_token *val;
  70 };
  71
  72 struct graphql_null_value {
  73         struct graphql_token *val;
  74 };
  75
  76 struct graphql_string_value {
  77         struct graphql_token *val;
  78 };
  79
  80 struct graphql_boolean_value {
  81         struct graphql_token *val;
  82 };
  83
  84 struct graphql_float_value {
  85         struct graphql_token *val;
  86 };
  87
  88 struct graphql_int_value {
  89         struct graphql_token *val;
  90 };
  91
  92 struct graphql_value {
  93         struct graphql_variable *var;
  94         struct graphql_int_value *int_val;
  95         struct graphql_float_value *float_val;
  96         struct graphql_boolean_value *bool_val;
  97         struct graphql_string_value *str_val;
  98         struct graphql_null_value *null_val;
  99         struct graphql_enum_value *enum_val;
 100         struct graphql_list_value *list_val;
 101         struct graphql_object_value *obj_val;
 102 };
 103
 104 struct graphql_inline_fragment {
 105         struct graphql_type_condition *type_cond;
 106         struct graphql_directives *directives;
 107         struct graphql_selection_set *sel_set;
 108 };
 109
 110 struct graphql_type_condition {
 111         struct graphql_named_type *named_type;
 112 };
 113
 114 struct graphql_fragment_name {
 115         struct graphql_token *name;
 116 };
 117
 118 struct graphql_fragment_definition {
 119         struct graphql_fragment_name *name;
 120         struct graphql_type_condition *type_cond;
 121         struct graphql_directives *directives;
 122         struct graphql_selection_set *sel_set;
 123 };
 124
 125 struct graphql_fragment_spread {
 126         struct graphql_fragment_name *name;
 127         struct graphql_directives *directives;
 128 };
 129
 130 struct graphql_alias {
 131         struct graphql_token *name;
 132 };
 133
 134 struct graphql_argument {
 135         struct graphql_argument *next;
 136         struct graphql_token *name;
 137         struct graphql_value *val;
 138 };
 139
 140 struct graphql_arguments {
 141         struct graphql_argument *first;
 142 };
 143
 144 struct graphql_field {
 145         struct graphql_alias *alias;
 146         struct graphql_token *name;
 147         struct graphql_arguments *args;
 148         struct graphql_directives *directives;
 149         struct graphql_selection_set *sel_set;
 150 };
 151
 152 struct graphql_selection {
 153         struct graphql_selection *next;
 154         struct graphql_field *field;
 155         struct graphql_fragment_spread *frag_spread;
 156         struct graphql_inline_fragment *inline_frag;
 157 };
 158
 159 struct graphql_selection_set {
 160         struct graphql_selection *first;
 161 };
 162
 163 struct graphql_operation_type {
 164         struct graphql_token *op_type;
 165 };
 166
 167 struct graphql_operation_definition {
 168         struct graphql_operation_type *op_type;
 169         struct graphql_token *op_name;
 170         struct graphql_variable_definitions *vars;
 171         struct graphql_directives *directives;
 172         struct graphql_selection_set *sel_set;
 173 };
 174
 175 struct graphql_executable_definition {
 176         struct graphql_executable_definition *next_def;
 177         struct graphql_operation_definition *op_def;
 178         struct graphql_fragment_definition *frag_def;
 179 };
 180
 181 struct graphql_executable_document {
 182         struct graphql_executable_definition *first_def;
 183 };
 184
 185 struct graphql_definition {
 186         struct graphql_definition *next_def;
 187         struct graphql_executable_definition *executable_def;
 188         struct graphql_type_system_definition_or_extension *type_system_def;
 189 };
 190
 191 struct graphql_document {
 192         struct graphql_definition *first_def;
 193 };
 194
 195
 196 struct graphql_token {
 197         struct list_node list;
 198         unsigned int token_type;
 199         unsigned int token_specific;
 200         char *token_string;
 201         unsigned int source_line;
 202         unsigned int source_column;
 203         unsigned int source_len;
 204 };
 205
 206 /* The lexer.
 207  * INPUTS:
 208  *      input - string to parse
 209  *      ctx - parent tal context or NULL
 210  *      tokens - a variable to receive the resulting token list
 211  * RETURN:
 212  *      GRAPHQL_SUCCESS or an error string.
 213  */
 214 const char *graphql_lex(const char *input, const tal_t *ctx, struct list_head **tokens);
 215
 216 /* The parser.
 217  * INPUTS:
 218  *      tokens - the list produced by the lexer
 219  *      doc - a variable to receive the resulting abstract syntax tree (AST)
 220  * RETURN:
 221  *      GRAPHQL_SUCCESS or an error string.
 222  */
 223 const char *graphql_parse(struct list_head *tokens, struct graphql_executable_document **doc);
 224
 225 /* The lexer and parser in one function, for convenience. */
 226 const char *graphql_lexparse(const char *input, const tal_t *ctx, struct list_head **tokens, struct graphql_executable_document **doc);
 227
 228 #endif
 229