#include <ccan/tal/tal.h>
// Coding constants
-#define GRAPHQL_SUCCESS 0
+#define GRAPHQL_SUCCESS ((const char *)NULL)
// The following structures constitute the AST returned by the parser.
struct graphql_directive *next;
struct graphql_token *name;
struct graphql_arguments *args;
+ void *data; // for application use
};
struct graphql_directives {
struct graphql_directive *first;
+ void *data; // for application use
};
struct graphql_named_type {
struct graphql_token *name;
+ void *data; // for application use
};
struct graphql_type {
struct graphql_named_type *named;
// struct graphql_list_type *list;
// struct graphql_non_null_type *non_null;
+ void *data; // for application use
};
struct graphql_default_value {
struct graphql_value *val;
+ void *data; // for application use
};
struct graphql_variable_definition {
struct graphql_type *type;
struct graphql_default_value *default_val;
struct graphql_directives *directives;
+ void *data; // for application use
};
struct graphql_variable_definitions {
struct graphql_variable_definition *first;
+ void *data; // for application use
};
struct graphql_variable {
struct graphql_token *name;
+ void *data; // for application use
};
struct graphql_object_field {
struct graphql_object_field *next;
struct graphql_token *name;
struct graphql_value *val;
+ void *data; // for application use
};
struct graphql_object_value {
struct graphql_object_field *first;
+ void *data; // for application use
};
struct graphql_list_value {
struct graphql_token *val;
+ void *data; // for application use
};
struct graphql_enum_value {
struct graphql_token *val;
+ void *data; // for application use
};
struct graphql_null_value {
struct graphql_token *val;
+ void *data; // for application use
};
struct graphql_string_value {
struct graphql_token *val;
+ void *data; // for application use
};
struct graphql_boolean_value {
struct graphql_token *val;
+ void *data; // for application use
};
struct graphql_float_value {
struct graphql_token *val;
+ void *data; // for application use
};
struct graphql_int_value {
struct graphql_token *val;
+ void *data; // for application use
};
struct graphql_value {
struct graphql_enum_value *enum_val;
struct graphql_list_value *list_val;
struct graphql_object_value *obj_val;
+ void *data; // for application use
};
struct graphql_inline_fragment {
struct graphql_type_condition *type_cond;
struct graphql_directives *directives;
struct graphql_selection_set *sel_set;
+ void *data; // for application use
};
struct graphql_type_condition {
struct graphql_named_type *named_type;
+ void *data; // for application use
};
struct graphql_fragment_name {
struct graphql_token *name;
+ void *data; // for application use
};
struct graphql_fragment_definition {
struct graphql_type_condition *type_cond;
struct graphql_directives *directives;
struct graphql_selection_set *sel_set;
+ void *data; // for application use
};
struct graphql_fragment_spread {
struct graphql_fragment_name *name;
struct graphql_directives *directives;
+ void *data; // for application use
};
struct graphql_alias {
struct graphql_token *name;
+ void *data; // for application use
};
struct graphql_argument {
struct graphql_argument *next;
struct graphql_token *name;
struct graphql_value *val;
+ void *data; // for application use
};
struct graphql_arguments {
struct graphql_argument *first;
+ void *data; // for application use
};
struct graphql_field {
struct graphql_arguments *args;
struct graphql_directives *directives;
struct graphql_selection_set *sel_set;
+ void *data; // for application use
};
struct graphql_selection {
struct graphql_field *field;
struct graphql_fragment_spread *frag_spread;
struct graphql_inline_fragment *inline_frag;
+ void *data; // for application use
};
struct graphql_selection_set {
struct graphql_selection *first;
+ void *data; // for application use
};
struct graphql_operation_type {
struct graphql_token *op_type;
+ void *data; // for application use
};
struct graphql_operation_definition {
struct graphql_variable_definitions *vars;
struct graphql_directives *directives;
struct graphql_selection_set *sel_set;
+ void *data; // for application use
};
struct graphql_executable_definition {
struct graphql_executable_definition *next_def;
struct graphql_operation_definition *op_def;
struct graphql_fragment_definition *frag_def;
+ void *data; // for application use
};
struct graphql_executable_document {
struct graphql_executable_definition *first_def;
+ void *data; // for application use
};
struct graphql_definition {
struct graphql_definition *next_def;
struct graphql_executable_definition *executable_def;
struct graphql_type_system_definition_or_extension *type_system_def;
+ void *data; // for application use
};
struct graphql_document {
struct graphql_definition *first_def;
+ void *data; // for application use
+};
+
+enum token_type_enum {
+ NAME = 'a',
+ INTEGER = 'i',
+ FLOAT = 'f',
+ STRING = 's',
+ PUNCT_BANG = '!',
+ PUNCT_SH__ = '$',
+ PUNCT_AMP = '&',
+ PUNCT_LPAR = '(',
+ PUNCT_RPAR = ')',
+ PUNCT_COLON = ':',
+ PUNCT_EQ = '=',
+ PUNCT_AT = '@',
+ PUNCT_LBRACKET = '[',
+ PUNCT_RBRACKET = ']',
+ PUNCT_LBRACE = '{',
+ PUNCT_PIPE = '|',
+ PUNCT_RBRACE = '}',
+ PUNCT_SPREAD = 0x2026, // spread operator (triple dot)
};
-
struct graphql_token {
- struct list_node list;
- unsigned int token_type;
- unsigned int token_specific;
+ struct list_node node;
+ enum token_type_enum token_type;
char *token_string;
unsigned int source_line;
unsigned int source_column;
+ unsigned int source_offset;
unsigned int source_len;
+ void *data; // for application use
};
/* The lexer.
* RETURN:
* GRAPHQL_SUCCESS or an error string.
*/
-const char *graphql_lex(const char *input, const tal_t *ctx, struct list_head **tokens);
+const char *graphql_lex(const tal_t *ctx, const char *input, struct list_head **tokens);
/* The parser.
* INPUTS:
* tokens - the list produced by the lexer
* doc - a variable to receive the resulting abstract syntax tree (AST)
+ * OPERATION:
+ * The token list is emptied during parsing, so far as the parsing
+ * succeeds. This allows the caller to inspect the line/char position
+ * of the next token (where the error likely is) and report that hint to
+ * the user in the form of an error message.
* RETURN:
* GRAPHQL_SUCCESS or an error string.
*/
const char *graphql_parse(struct list_head *tokens, struct graphql_executable_document **doc);
/* The lexer and parser in one function, for convenience. */
-const char *graphql_lexparse(const char *input, const tal_t *ctx, struct list_head **tokens, struct graphql_executable_document **doc);
+const char *graphql_lexparse(const tal_t *ctx, const char *input, struct list_head **tokens, struct graphql_executable_document **doc);
#endif
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