boostorg/regex
1
0
Fork 1
mirror of https://github.com/boostorg/regex.git synced 2025-07-16 13:52:17 +02:00
Code Issues Packages Projects Releases Wiki Activity

Correct behaviour of \b when matching null-strings.

Browse Source 
See https://github.com/boostorg/regex/issues/40
This commit is contained in:
jzmaddock
2018-07-21 15:19:41 +01:00
parent 867cc5f0fc
commit 231dbc3ebf
2 changed files with 29 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
include/boost/regex/v4/perl_matcher_common.hpp
View File

@ -476,12 +476,14 @@ bool perl_matcher<BidiIterator, Allocator, traits>::match_word_boundary()
}
else
{
b = (m_match_flags & match_not_eow) ? true : false;
if (m_match_flags & match_not_eow)
return false;
b = false;
}
if((position == backstop) && ((m_match_flags & match_prev_avail) == 0))
{
if(m_match_flags & match_not_bow)
b ^= true;
return false;
else
b ^= false;
}

25
test/regress/test_escapes.cpp
View File

@ -169,5 +169,30 @@ void test_assertion_escapes()
TEST_REGEX_SEARCH_W(L"(?x) abc \\R", perl, L"abc\u2028bar", match_default, make_array(0, 4, -2, -2));
TEST_REGEX_SEARCH_W(L"(?x) abc \\R", perl, L"abc\u2029bar", match_default, make_array(0, 4, -2, -2));
}
// Bug report: https://github.com/boostorg/regex/issues/40
TEST_REGEX_SEARCH("\\b", perl, "", match_default, make_array(-2, -2));
TEST_REGEX_SEARCH("\\b", perl, "", match_not_bow, make_array(-2, -2));
TEST_REGEX_SEARCH("\\b", perl, "", match_not_eow, make_array(-2, -2));
TEST_REGEX_SEARCH("\\b", perl, "", match_not_bow | match_not_eow, make_array(-2, -2));
TEST_REGEX_SEARCH("\\b", perl, "-", match_default, make_array(-2, -2));
TEST_REGEX_SEARCH("\\b", perl, "-", match_not_bow, make_array(-2, -2));
TEST_REGEX_SEARCH("\\b", perl, "-", match_not_eow, make_array(-2, -2));
TEST_REGEX_SEARCH("\\b", perl, "-", match_not_bow | match_not_eow, make_array(-2, -2));
TEST_REGEX_SEARCH("\\<", perl, "", match_default, make_array(-2, -2));
TEST_REGEX_SEARCH("\\<", perl, "", match_not_bow, make_array(-2, -2));
TEST_REGEX_SEARCH("\\<", perl, "", match_not_eow, make_array(-2, -2));
TEST_REGEX_SEARCH("\\<", perl, "", match_not_bow | match_not_eow, make_array(-2, -2));
TEST_REGEX_SEARCH("\\<", perl, "-", match_default, make_array(-2, -2));
TEST_REGEX_SEARCH("\\<", perl, "-", match_not_bow, make_array(-2, -2));
TEST_REGEX_SEARCH("\\<", perl, "-", match_not_eow, make_array(-2, -2));
TEST_REGEX_SEARCH("\\<", perl, "-", match_not_bow | match_not_eow, make_array(-2, -2));
TEST_REGEX_SEARCH("\\>", perl, "", match_default, make_array(-2, -2));
TEST_REGEX_SEARCH("\\>", perl, "", match_not_bow, make_array(-2, -2));
TEST_REGEX_SEARCH("\\>", perl, "", match_not_eow, make_array(-2, -2));
TEST_REGEX_SEARCH("\\>", perl, "", match_not_bow | match_not_eow, make_array(-2, -2));
TEST_REGEX_SEARCH("\\>", perl, "-", match_default, make_array(-2, -2));
TEST_REGEX_SEARCH("\\>", perl, "-", match_not_bow, make_array(-2, -2));
TEST_REGEX_SEARCH("\\>", perl, "-", match_not_eow, make_array(-2, -2));
TEST_REGEX_SEARCH("\\>", perl, "-", match_not_bow | match_not_eow, make_array(-2, -2));
}