motorhead/qemu
1
0
Fork 0
mirror of https://github.com/Motorhead1991/qemu.git synced 2025-07-26 20:03:54 -06:00
Code Issues Projects Releases Packages Wiki Activity Actions

json: Eliminate lexer state IN_WHITESPACE, pseudo-token JSON_SKIP

Browse source 
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>
This commit is contained in:
Markus Armbruster 2018-08-31 09:58:41 +02:00
parent 2ce4ee64c4
commit 1e960b4602
2 changed files with 5 additions and 18 deletions
Download patch file Download diff file Expand all files Collapse all files

1
qobject/json-parser-int.h
View file

@ -31,7 +31,6 @@ typedef enum json_token_type {
JSON_KEYWORD,
JSON_STRING,
JSON_INTERP,
JSON_SKIP,
JSON_END_OF_INPUT,
JSON_MAX = JSON_END_OF_INPUT
} JSONTokenType;