mirror/ruby
1
0
Fork 0
mirror of https://github.com/ruby/ruby.git synced 2026-01-27 04:24:23 +00:00
Code Issues Packages Projects Releases Wiki Activity

[ruby/json] Keep track of the the number of additional backslashes to avoid an extra memchr searching the remaining characters when no more backslashes exist.

Browse Source 
https://github.com/ruby/json/commit/d21d9362fa
This commit is contained in:
Scott Myron 2025-12-30 20:48:18 -06:00 committed by git
parent 094145fbc1
commit 61d45c857b
1 changed files with 5 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
ext/json/parser/parser.c
View File

@ -643,7 +643,7 @@ static inline VALUE json_string_fastpath(JSON_ParserState *state, JSON_ParserCon
typedef struct _json_unescape_positions {
long size;
const char **positions;
bool has_more;
unsigned long additional_backslashes;
} JSON_UnescapePositions;
static inline const char *json_next_backslash(const char *pe, const char *stringEnd, JSON_UnescapePositions *positions)
@ -657,7 +657,8 @@ static inline const char *json_next_backslash(const char *pe, const char *string
}
}
if (positions->has_more) {
if (positions->additional_backslashes) {
positions->additional_backslashes--;
return memchr(pe, '\\', stringEnd - pe);
}
@ -992,7 +993,7 @@ static VALUE json_parse_escaped_string(JSON_ParserState *state, JSON_ParserConfi
JSON_UnescapePositions positions = {
.size = 0,
.positions = backslashes,
.has_more = false,
.additional_backslashes = 0,
};
do {
@ -1007,7 +1008,7 @@ static VALUE json_parse_escaped_string(JSON_ParserState *state, JSON_ParserConfi
backslashes[positions.size] = state->cursor;
positions.size++;
} else {
positions.has_more = true;
positions.additional_backslashes++;
}
state->cursor++;
break;