Function pg_parse_json

src/common/jsonapi.c:178–208

* pg_parse_json * * Publicly visible entry point for the JSON parser. * * lex is a lexing context, set up for the json to be processed by calling * makeJsonLexContext(). sem is a structure of function pointers to semantic * action routines to be called at appropriate spots during parsing, and a * pointer to a state object to be passed to those routines. */

 * pointer to a state object to be passed to those routines.
 */
JsonParseErrorType
pg_parse_json(JsonLexContext *lex, JsonSemAction *sem)
{
	JsonTokenType tok;
	JsonParseErrorType result;

	/* get the initial token */
	result = json_lex(lex);
	if (result != JSON_SUCCESS)
		return result;

	tok = lex_peek(lex);

	/* parse by recursive descent */
	switch (tok)
	{
		case JSON_TOKEN_OBJECT_START:
			result = parse_object(lex, sem);
			break;
		case JSON_TOKEN_ARRAY_START:
			result = parse_array(lex, sem);
			break;
		default:
			result = parse_scalar(lex, sem);	/* json can be a bare scalar */
	}

	if (result == JSON_SUCCESS)
		result = lex_expect(JSON_PARSE_END, lex, JSON_TOKEN_END);

	return result;
}

/*
 * json_count_array_elements