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Improve exact character repeat length check.

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This commit is contained in:
zherczeg 2015-06-17 11:32:06 +00:00
parent ad668e2e4d
commit 24d3b6493b
1 changed files with 22 additions and 5 deletions
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27
src/pcre2_jit_compile.c
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@ -8079,11 +8079,28 @@ switch(type)
/* Handle fixed part first. */
if (exact > 1)
{
OP1(SLJIT_MOV, tmp_base, tmp_offset, SLJIT_IMM, exact);
label = LABEL();
compile_char1_matchingpath(common, type, cc, &backtrack->topbacktracks, TRUE);
OP2(SLJIT_SUB | SLJIT_SET_E, tmp_base, tmp_offset, tmp_base, tmp_offset, SLJIT_IMM, 1);
JUMPTO(SLJIT_NOT_ZERO, label);
if (common->mode == PCRE2_JIT_COMPLETE
#ifdef SUPPORT_UNICODE
&& !common->utf
#endif
)
{
OP2(SLJIT_ADD, TMP1, 0, STR_PTR, 0, SLJIT_IMM, IN_UCHARS(exact));
add_jump(compiler, &backtrack->topbacktracks, CMP(SLJIT_GREATER, TMP1, 0, STR_END, 0));
OP1(SLJIT_MOV, tmp_base, tmp_offset, SLJIT_IMM, exact);
label = LABEL();
compile_char1_matchingpath(common, type, cc, &backtrack->topbacktracks, FALSE);
OP2(SLJIT_SUB | SLJIT_SET_E, tmp_base, tmp_offset, tmp_base, tmp_offset, SLJIT_IMM, 1);
JUMPTO(SLJIT_NOT_ZERO, label);
}
else
{
OP1(SLJIT_MOV, tmp_base, tmp_offset, SLJIT_IMM, exact);
label = LABEL();
compile_char1_matchingpath(common, type, cc, &backtrack->topbacktracks, TRUE);
OP2(SLJIT_SUB | SLJIT_SET_E, tmp_base, tmp_offset, tmp_base, tmp_offset, SLJIT_IMM, 1);
JUMPTO(SLJIT_NOT_ZERO, label);
}
}
else if (exact == 1)
compile_char1_matchingpath(common, type, cc, &backtrack->topbacktracks, TRUE);