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Diffstat (limited to '')
-rw-r--r-- | src/include/utils/jsonfuncs.h | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/src/include/utils/jsonfuncs.h b/src/include/utils/jsonfuncs.h new file mode 100644 index 0000000..1f1b402 --- /dev/null +++ b/src/include/utils/jsonfuncs.h @@ -0,0 +1,58 @@ +/*------------------------------------------------------------------------- + * + * jsonfuncs.h + * Functions to process JSON data types. + * + * Portions Copyright (c) 1996-2020, PostgreSQL Global Development Group + * Portions Copyright (c) 1994, Regents of the University of California + * + * src/include/utils/jsonapi.h + * + *------------------------------------------------------------------------- + */ + +#ifndef JSONFUNCS_H +#define JSONFUNCS_H + +#include "common/jsonapi.h" +#include "utils/jsonb.h" + +/* + * Flag types for iterate_json(b)_values to specify what elements from a + * json(b) document we want to iterate. + */ +typedef enum JsonToIndex +{ + jtiKey = 0x01, + jtiString = 0x02, + jtiNumeric = 0x04, + jtiBool = 0x08, + jtiAll = jtiKey | jtiString | jtiNumeric | jtiBool +} JsonToIndex; + +/* an action that will be applied to each value in iterate_json(b)_values functions */ +typedef void (*JsonIterateStringValuesAction) (void *state, char *elem_value, int elem_len); + +/* an action that will be applied to each value in transform_json(b)_values functions */ +typedef text *(*JsonTransformStringValuesAction) (void *state, char *elem_value, int elem_len); + +/* build a JsonLexContext from a text datum */ +extern JsonLexContext *makeJsonLexContext(text *json, bool need_escapes); + +/* try to parse json, and ereport(ERROR) on failure */ +extern void pg_parse_json_or_ereport(JsonLexContext *lex, JsonSemAction *sem); + +/* report an error during json lexing or parsing */ +extern void json_ereport_error(JsonParseErrorType error, JsonLexContext *lex); + +extern uint32 parse_jsonb_index_flags(Jsonb *jb); +extern void iterate_jsonb_values(Jsonb *jb, uint32 flags, void *state, + JsonIterateStringValuesAction action); +extern void iterate_json_values(text *json, uint32 flags, void *action_state, + JsonIterateStringValuesAction action); +extern Jsonb *transform_jsonb_string_values(Jsonb *jsonb, void *action_state, + JsonTransformStringValuesAction transform_action); +extern text *transform_json_string_values(text *json, void *action_state, + JsonTransformStringValuesAction transform_action); + +#endif |