Author: jilles
Date: Tue Nov 23 20:46:06 2010
New Revision: 215766
URL: http://svn.freebsd.org/changeset/base/215766
Log:
sh: Pass multiple bytes at a time to lex.
This speeds up the expansion/arith6.0 test considerably.
Modified:
head/bin/sh/arith_lex.l
Modified: head/bin/sh/arith_lex.l
==============================================================================
--- head/bin/sh/arith_lex.l Tue Nov 23 20:28:21 2010 (r215765)
+++ head/bin/sh/arith_lex.l Tue Nov 23 20:46:06 2010 (r215766)
@@ -53,7 +53,15 @@ int yylex(void);
#undef YY_INPUT
#define YY_INPUT(buf,result,max) \
- result = (*buf = *arith_buf++) ? 1 : YY_NULL;
+ do { \
+ result = strnlen(arith_buf, max); \
+ if (result == 0) \
+ result = YY_NULL; \
+ else { \
+ memcpy(buf, arith_buf, result); \
+ arith_buf += result; \
+ } \
+ } while (0);
#define YY_NO_UNPUT
#define YY_NO_INPUT
%}
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