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1e960b4602
The lexer ignores whitespace like this:
on whitespace on non-ws spontaneously
IN_START --> IN_WHITESPACE --> JSON_SKIP --> IN_START
^ |
\__/ on whitespace
This accumulates a whitespace token in state IN_WHITESPACE, only to
throw it away on the transition via JSON_SKIP to the start state.
Wasteful. Go from IN_START to IN_START on whitespace directly,
dropping the whitespace character.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20180831075841.13363-7-armbru@redhat.com>
54 lines
1.3 KiB
C
54 lines
1.3 KiB
C
/*
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* JSON Parser
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*
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* Copyright IBM, Corp. 2009
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*
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* Authors:
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* Anthony Liguori <aliguori@us.ibm.com>
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*
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* This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
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* See the COPYING.LIB file in the top-level directory.
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*
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*/
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#ifndef JSON_PARSER_INT_H
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#define JSON_PARSER_INT_H
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#include "qapi/qmp/json-parser.h"
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typedef enum json_token_type {
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JSON_ERROR = 0, /* must be zero, see json_lexer[] */
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/* Gap for lexer states */
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JSON_LCURLY = 100,
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JSON_MIN = JSON_LCURLY,
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JSON_RCURLY,
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JSON_LSQUARE,
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JSON_RSQUARE,
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JSON_COLON,
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JSON_COMMA,
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JSON_INTEGER,
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JSON_FLOAT,
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JSON_KEYWORD,
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JSON_STRING,
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JSON_INTERP,
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JSON_END_OF_INPUT,
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JSON_MAX = JSON_END_OF_INPUT
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} JSONTokenType;
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typedef struct JSONToken JSONToken;
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/* json-lexer.c */
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void json_lexer_init(JSONLexer *lexer, bool enable_interpolation);
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void json_lexer_feed(JSONLexer *lexer, const char *buffer, size_t size);
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void json_lexer_flush(JSONLexer *lexer);
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void json_lexer_destroy(JSONLexer *lexer);
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/* json-streamer.c */
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void json_message_process_token(JSONLexer *lexer, GString *input,
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JSONTokenType type, int x, int y);
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/* json-parser.c */
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JSONToken *json_token(JSONTokenType type, int x, int y, GString *tokstr);
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QObject *json_parser_parse(GQueue *tokens, va_list *ap, Error **errp);
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#endif
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