test_tricky_cases.cpp

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   TEST_REGEX_SEARCH("1234567890123456789012345678901234567890123456789012345678901234567890", boost::regex::extended, "a1234567890123456789012345678901234567890123456789012345678901234567890b", match_default, make_array(1, 71, -2, -2));
   // fish for problems as brackets go past 8
   TEST_REGEX_SEARCH("[ab][cd][ef][gh][ij][kl][mn]", boost::regex::extended, "xacegikmoq", match_default, make_array(1, 8, -2, -2));
   TEST_REGEX_SEARCH("[ab][cd][ef][gh][ij][kl][mn][op]", boost::regex::extended, "xacegikmoq", match_default, make_array(1, 9, -2, -2));
   TEST_REGEX_SEARCH("[ab][cd][ef][gh][ij][kl][mn][op][qr]", boost::regex::extended, "xacegikmoqy", match_default, make_array(1, 10, -2, -2));
   TEST_REGEX_SEARCH("[ab][cd][ef][gh][ij][kl][mn][op][q]", boost::regex::extended, "xacegikmoqy", match_default, make_array(1, 10, -2, -2));
   // and as parenthesis go past 9:
   TEST_REGEX_SEARCH("(a)(b)(c)(d)(e)(f)(g)(h)", boost::regex::extended, "zabcdefghi", match_default, make_array(1, 9, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7, 8, 8, 9, -2, -2));
   TEST_REGEX_SEARCH("(a)(b)(c)(d)(e)(f)(g)(h)(i)", boost::regex::extended, "zabcdefghij", match_default, make_array(1, 10, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7, 8, 8, 9, 9, 10, -2, -2));
   TEST_REGEX_SEARCH("(a)(b)(c)(d)(e)(f)(g)(h)(i)(j)", boost::regex::extended, "zabcdefghijk", match_default, make_array(1, 11, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7, 8, 8, 9, 9, 10, 10, 11, -2, -2));
   TEST_REGEX_SEARCH("(a)(b)(c)(d)(e)(f)(g)(h)(i)(j)(k)", boost::regex::extended, "zabcdefghijkl", match_default, make_array(1, 12, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7, 8, 8, 9, 9, 10, 10, 11, 11, 12, -2, -2));
   TEST_REGEX_SEARCH("(a)d|(b)c", boost::regex::extended, "abc", match_default, make_array(1, 3, -1, -1, 1, 2, -2, -2));
   TEST_REGEX_SEARCH("_+((www)|(ftp)|(mailto)):_*", boost::regex::extended, "_wwwnocolon _mailto:", match_default, make_array(12, 20, 13, 19, -1, -1, -1, -1, 13, 19, -2, -2));
   // subtleties of matching
   TEST_REGEX_SEARCH("a\\(b\\)\\?c\\1d", basic|bk_plus_qm, "acd", match_default, make_array(0, 3, -1, -1, -2, -2));
   TEST_REGEX_SEARCH("a(b?c)+d", boost::regex::extended, "accd", match_default, make_array(0, 4, 2, 3, -2, -2));
   TEST_REGEX_SEARCH("(wee|week)(knights|night)", boost::regex::extended, "weeknights", match_default, make_array(0, 10, 0, 3, 3, 10, -2, -2));
   TEST_REGEX_SEARCH(".*", boost::regex::extended, "abc", match_default, make_array(0, 3, -2, 3, 3, -2, -2));
   TEST_REGEX_SEARCH("a(b|(c))d", boost::regex::extended, "abd", match_default, make_array(0, 3, 1, 2, -1, -1, -2, -2));
   TEST_REGEX_SEARCH("a(b|(c))d", boost::regex::extended, "acd", match_default, make_array(0, 3, 1, 2, 1, 2, -2, -2));
   TEST_REGEX_SEARCH("a(b*|c|e)d", boost::regex::extended, "abbd", match_default, make_array(0, 4, 1, 3, -2, -2));
   TEST_REGEX_SEARCH("a(b*|c|e)d", boost::regex::extended, "acd", match_default, make_array(0, 3, 1, 2, -2, -2));
   TEST_REGEX_SEARCH("a(b*|c|e)d", boost::regex::extended, "ad", match_default, make_array(0, 2, 1, 1, -2, -2));
   TEST_REGEX_SEARCH("a(b?)c", boost::regex::extended, "abc", match_default, make_array(0, 3, 1, 2, -2, -2));
   TEST_REGEX_SEARCH("a(b?)c", boost::regex::extended, "ac", match_default, make_array(0, 2, 1, 1, -2, -2));
   TEST_REGEX_SEARCH("a(b+)c", boost::regex::extended, "abc", match_default, make_array(0, 3, 1, 2, -2, -2));
   TEST_REGEX_SEARCH("a(b+)c", boost::regex::extended, "abbbc", match_default, make_array(0, 5, 1, 4, -2, -2));
   TEST_REGEX_SEARCH("a(b*)c", boost::regex::extended, "ac", match_default, make_array(0, 2, 1, 1, -2, -2));
   TEST_REGEX_SEARCH("(a|ab)(bc([de]+)f|cde)", boost::regex::extended, "abcdef", match_default, make_array(0, 6, 0, 1, 1, 6, 3, 5, -2, -2));
   TEST_REGEX_SEARCH("a([bc]?)c", boost::regex::extended, "abc", match_default, make_array(0, 3, 1, 2, -2, -2));
   TEST_REGEX_SEARCH("a([bc]?)c", boost::regex::extended, "ac", match_default, make_array(0, 2, 1, 1, -2, -2));
   TEST_REGEX_SEARCH("a([bc]+)c", boost::regex::extended, "abc", match_default, make_array(0, 3, 1, 2, -2, -2));
   TEST_REGEX_SEARCH("a([bc]+)c", boost::regex::extended, "abcc", match_default, make_array(0, 4, 1, 3, -2, -2));
   TEST_REGEX_SEARCH("a([bc]+)bc", boost::regex::extended, "abcbc", match_default, make_array(0, 5, 1, 3, -2, -2));
   TEST_REGEX_SEARCH("a(bb+|b)b", boost::regex::extended, "abb", match_default, make_array(0, 3, 1, 2, -2, -2));
   TEST_REGEX_SEARCH("a(bbb+|bb+|b)b", boost::regex::extended, "abb", match_default, make_array(0, 3, 1, 2, -2, -2));
   TEST_REGEX_SEARCH("a(bbb+|bb+|b)b", boost::regex::extended, "abbb", match_default, make_array(0, 4, 1, 3, -2, -2));
   TEST_REGEX_SEARCH("a(bbb+|bb+|b)bb", boost::regex::extended, "abbb", match_default, make_array(0, 4, 1, 2, -2, -2));
   TEST_REGEX_SEARCH("(.*).*", boost::regex::extended, "abcdef", match_default, make_array(0, 6, 0, 6, -2, 6, 6, 6, 6, -2, -2));
   TEST_REGEX_SEARCH("(a*)*", boost::regex::extended, "bc", match_default, make_array(0, 0, 0, 0, -2, 1, 1, 1, 1, -2, 2, 2, 2, 2, -2, -2));
   TEST_REGEX_SEARCH("xyx*xz", boost::regex::extended, "xyxxxxyxxxz", match_default, make_array(5, 11, -2, -2));
   // do we get the right subexpression when it is used more than once?
   TEST_REGEX_SEARCH("a(b|c)*d", boost::regex::extended, "ad", match_default, make_array(0, 2, -1, -1, -2, -2));
   TEST_REGEX_SEARCH("a(b|c)*d", boost::regex::extended, "abcd", match_default, make_array(0, 4, 2, 3, -2, -2));
   TEST_REGEX_SEARCH("a(b|c)+d", boost::regex::extended, "abd", match_default, make_array(0, 3, 1, 2, -2, -2));
   TEST_REGEX_SEARCH("a(b|c)+d", boost::regex::extended, "abcd", match_default, make_array(0, 4, 2, 3, -2, -2));
   TEST_REGEX_SEARCH("a(b|c?)+d", boost::regex::extended, "ad", match_default, make_array(0, 2, 1, 1, -2, -2));
   TEST_REGEX_SEARCH("a(b|c){0,0}d", boost::regex::extended, "ad", match_default, make_array(0, 2, -1, -1, -2, -2));
   TEST_REGEX_SEARCH("a(b|c){0,1}d", boost::regex::extended, "ad", match_default, make_array(0, 2, -1, -1, -2, -2));
   TEST_REGEX_SEARCH("a(b|c){0,1}d", boost::regex::extended, "abd", match_default, make_array(0, 3, 1, 2, -2, -2));
   TEST_REGEX_SEARCH("a(b|c){0,2}d", boost::regex::extended, "ad", match_default, make_array(0, 2, -1, -1, -2, -2));
   TEST_REGEX_SEARCH("a(b|c){0,2}d", boost::regex::extended, "abcd", match_default, make_array(0, 4, 2, 3, -2, -2));
   TEST_REGEX_SEARCH("a(b|c){0,}d", boost::regex::extended, "ad", match_default, make_array(0, 2, -1, -1, -2, -2));
   TEST_REGEX_SEARCH("a(b|c){0,}d", boost::regex::extended, "abcd", match_default, make_array(0, 4, 2, 3, -2, -2));
   TEST_REGEX_SEARCH("a(b|c){1,1}d", boost::regex::extended, "abd", match_default, make_array(0, 3, 1, 2, -2, -2));
   TEST_REGEX_SEARCH("a(b|c){1,2}d", boost::regex::extended, "abd", match_default, make_array(0, 3, 1, 2, -2, -2));
   TEST_REGEX_SEARCH("a(b|c){1,2}d", boost::regex::extended, "abcd", match_default, make_array(0, 4, 2, 3, -2, -2));
   TEST_REGEX_SEARCH("a(b|c){1,}d", boost::regex::extended, "abd", match_default, make_array(0, 3, 1, 2, -2, -2));
   TEST_REGEX_SEARCH("a(b|c){1,}d", boost::regex::extended, "abcd", match_default, make_array(0, 4, 2, 3, -2, -2));
   TEST_REGEX_SEARCH("a(b|c){2,2}d", boost::regex::extended, "acbd", match_default, make_array(0, 4, 2, 3, -2, -2));
   TEST_REGEX_SEARCH("a(b|c){2,2}d", boost::regex::extended, "abcd", match_default, make_array(0, 4, 2, 3, -2, -2));
   TEST_REGEX_SEARCH("a(b|c){2,4}d", boost::regex::extended, "abcd", match_default, make_array(0, 4, 2, 3, -2, -2));
   TEST_REGEX_SEARCH("a(b|c){2,4}d", boost::regex::extended, "abcbd", match_default, make_array(0, 5, 3, 4, -2, -2));
   TEST_REGEX_SEARCH("a(b|c){2,4}d", boost::regex::extended, "abcbcd", match_default, make_array(0, 6, 4, 5, -2, -2));
   TEST_REGEX_SEARCH("a(b|c){2,}d", boost::regex::extended, "abcd", match_default, make_array(0, 4, 2, 3, -2, -2));
   TEST_REGEX_SEARCH("a(b|c){2,}d", boost::regex::extended, "abcbd", match_default, make_array(0, 5, 3, 4, -2, -2));
   // perl only:
   TEST_REGEX_SEARCH("a(b|c?)+d", perl, "abcd", match_default, make_array(0, 4, 3, 3, -2, -2));
   TEST_REGEX_SEARCH("a(b+|((c)*))+d", perl, "abd", match_default, make_array(0, 3, 2, 2, 2, 2, -1, -1, -2, -2));
   TEST_REGEX_SEARCH("a(b+|((c)*))+d", perl, "abcd", match_default, make_array(0, 4, 3, 3, 3, 3, 2, 3, -2, -2));
   // posix only:
   TEST_REGEX_SEARCH("a(b|c?)+d", boost::regex::extended, "abcd", match_default, make_array(0, 4, 2, 3, -2, -2));
   TEST_REGEX_SEARCH("a(b|((c)*))+d", boost::regex::extended, "abcd", match_default, make_array(0, 4, 2, 3, 2, 3, 2, 3, -2, -2));
   TEST_REGEX_SEARCH("a(b+|((c)*))+d", boost::regex::extended, "abd", match_default, make_array(0, 3, 1, 2, -1, -1, -1, -1, -2, -2));
   TEST_REGEX_SEARCH("a(b+|((c)*))+d", boost::regex::extended, "abcd", match_default, make_array(0, 4, 2, 3, 2, 3, 2, 3, -2, -2));
   // literals:
   TEST_REGEX_SEARCH("\\**?/{}", literal, "\\**?/{}", match_default, make_array(0, 7, -2, -2));
   TEST_REGEX_SEARCH("\\**?/{}", literal, "\\**?/{", match_default, make_array(-2, -2));
   // try to match C++ syntax elements:
   // line comment:
   TEST_REGEX_SEARCH("//[^\\n]*", perl, "++i //here is a line comment\n", match_default, make_array(4, 28, -2, -2));
   // block comment:
   TEST_REGEX_SEARCH("/\\*([^*]|\\*+[^*/])*\\*+/", perl, "/* here is a block comment */", match_default, make_array(0, 29, 26, 27, -2, -2));
   TEST_REGEX_SEARCH("/\\*([^*]|\\*+[^*/])*\\*+/", perl, "/**/", match_default, make_array(0, 4, -1, -1, -2, -2));
   TEST_REGEX_SEARCH("/\\*([^*]|\\*+[^*/])*\\*+/", perl, "/***/", match_default, make_array(0, 5, -1, -1, -2, -2));
   TEST_REGEX_SEARCH("/\\*([^*]|\\*+[^*/])*\\*+/", perl, "/****/", match_default, make_array(0, 6, -1, -1, -2, -2));
   TEST_REGEX_SEARCH("/\\*([^*]|\\*+[^*/])*\\*+/", perl, "/*****/", match_default, make_array(0, 7, -1, -1, -2, -2));
   TEST_REGEX_SEARCH("/\\*([^*]|\\*+[^*/])*\\*+/", perl, "/*****/*/", match_default, make_array(0, 7, -1, -1, -2, -2));
   // preprossor directives:
   TEST_REGEX_SEARCH("^[[:blank:]]*#([^\\n]*\\\\[[:space:]]+)*[^\\n]*", perl, "#define some_symbol", match_default, make_array(0, 19, -1, -1, -2, -2));
   TEST_REGEX_SEARCH("^[[:blank:]]*#([^\\n]*\\\\[[:space:]]+)*[^\\n]*", perl, "#define some_symbol(x) #x", match_default, make_array(0, 25, -1, -1, -2, -2));
   // try to match C++ syntax elements:
   // line comment:
   TEST_REGEX_SEARCH("//[^\\n]*", boost::regex::extended&~no_escape_in_lists, "++i //here is a line comment\n", match_default, make_array(4, 28, -2, -2));
   // block comment:
   TEST_REGEX_SEARCH("/\\*([^*]|\\*+[^*/])*\\*+/", boost::regex::extended&~no_escape_in_lists, "/* here is a block comment */", match_default, make_array(0, 29, 26, 27, -2, -2));
   TEST_REGEX_SEARCH("/\\*([^*]|\\*+[^*/])*\\*+/", boost::regex::extended&~no_escape_in_lists, "/**/", match_default, make_array(0, 4, -1, -1, -2, -2));
   TEST_REGEX_SEARCH("/\\*([^*]|\\*+[^*/])*\\*+/", boost::regex::extended&~no_escape_in_lists, "/***/", match_default, make_array(0, 5, -1, -1, -2, -2));
   TEST_REGEX_SEARCH("/\\*([^*]|\\*+[^*/])*\\*+/", boost::regex::extended&~no_escape_in_lists, "/****/", match_default, make_array(0, 6, -1, -1, -2, -2));
   TEST_REGEX_SEARCH("/\\*([^*]|\\*+[^*/])*\\*+/", boost::regex::extended&~no_escape_in_lists, "/*****/", match_default, make_array(0, 7, -1, -1, -2, -2));
   TEST_REGEX_SEARCH("/\\*([^*]|\\*+[^*/])*\\*+/", boost::regex::extended&~no_escape_in_lists, "/*****/*/", match_default, make_array(0, 7, -1, -1, -2, -2));
   // preprossor directives:
   TEST_REGEX_SEARCH("^[[:blank:]]*#([^\\n]*\\\\[[:space:]]+)*[^\\n]*", boost::regex::extended&~no_escape_in_lists, "#define some_symbol", match_default, make_array(0, 19, -1, -1, -2, -2));
   TEST_REGEX_SEARCH("^[[:blank:]]*#([^\\n]*\\\\[[:space:]]+)*[^\\n]*", boost::regex::extended&~no_escape_in_lists, "#define some_symbol(x) #x", match_default, make_array(0, 25, -1, -1, -2, -2));
   // perl only:
   TEST_REGEX_SEARCH("^[[:blank:]]*#([^\\n]*\\\\[[:space:]]+)*[^\\n]*", perl, "#define some_symbol(x) \\  \r\n  foo();\\\r\n   printf(#x);", match_default, make_array(0, 53, 30, 42, -2, -2));
   // POSIX leftmost longest checks:
   TEST_REGEX_SEARCH("(aaa)|(\\w+)", boost::regex::extended&~no_escape_in_lists, "a", match_default, make_array(0, 1, -1, -1, 0, 1, -2, -2));
   TEST_REGEX_SEARCH("(aaa)|(\\w+)", boost::regex::extended&~no_escape_in_lists, "aa", match_default, make_array(0, 2, -1, -1, 0, 2, -2, -2));
   TEST_REGEX_SEARCH("(aaa)|(\\w+)", boost::regex::extended&~no_escape_in_lists, "aaa", match_default, make_array(0, 3, 0, 3, -1, -1, -2, -2));
   TEST_REGEX_SEARCH("(aaa)|(\\w+)", boost::regex::extended&~no_escape_in_lists, "aaaa", match_default, make_array(0, 4, -1, -1, 0, 4, -2, -2));
   TEST_REGEX_SEARCH("($)|(\\>)", boost::regex::extended&~no_escape_in_lists, "aaaa", match_default, make_array(4, 4, 4, 4, -1, -1, -2, -2));
   TEST_REGEX_SEARCH("($)|(\\>)", boost::regex::extended&~no_escape_in_lists, "aaaa", match_default|match_not_eol, make_array(4, 4, -1, -1, 4, 4, -2, -2));
   TEST_REGEX_SEARCH("(aaa)(ab)*", boost::regex::extended, "aaaabab", match_default, make_array(0, 7, 0, 3, 5, 7, -2, -2));
}

void test_tricky_cases3()
{
   using namespace boost::regex_constants;
   TEST_REGEX_SEARCH("((0x[[:xdigit:]]+)|([[:digit:]]+))u?((int(8|16|32|64))|L)?", perl, "0xFF", match_default, make_array(0, 4, 0, 4, 0, 4, -1, -1, -1, -1, -1, -1, -1, -1, -2, -2));
   TEST_REGEX_SEARCH("((0x[[:xdigit:]]+)|([[:digit:]]+))u?((int(8|16|32|64))|L)?", perl, "35", match_default, make_array(0, 2, 0, 2, -1, -1, 0, 2, -1, -1, -1, -1, -1, -1, -2, -2));
   TEST_REGEX_SEARCH("((0x[[:xdigit:]]+)|([[:digit:]]+))u?((int(8|16|32|64))|L)?", perl, "0xFFu", match_default, make_array(0, 5, 0, 4, 0, 4, -1, -1, -1, -1, -1, -1, -1, -1, -2, -2));
   TEST_REGEX_SEARCH("((0x[[:xdigit:]]+)|([[:digit:]]+))u?((int(8|16|32|64))|L)?", perl, "0xFFL", match_default, make_array(0, 5, 0, 4, 0, 4, -1, -1, 4, 5, -1, -1, -1, -1, -2, -2));
   TEST_REGEX_SEARCH("((0x[[:xdigit:]]+)|([[:digit:]]+))u?((int(8|16|32|64))|L)?", perl, "0xFFFFFFFFFFFFFFFFuint64", match_default, make_array(0, 24, 0, 18, 0, 18, -1, -1, 19, 24, 19, 24, 22, 24, -2, -2));
   // strings:
   TEST_REGEX_SEARCH("'([^\\\\']|\\\\.)*'", perl, "'\\x3A'", match_default, make_array(0, 6, 4, 5, -2, -2));
   TEST_REGEX_SEARCH("'([^\\\\']|\\\\.)*'", perl, "'\\''", match_default, make_array(0, 4, 1, 3, -2, -2));
   TEST_REGEX_SEARCH("'([^\\\\']|\\\\.)*'", perl, "'\\n'", match_default, make_array(0, 4, 1, 3, -2, -2));
   // posix only:
   TEST_REGEX_SEARCH("^[[:blank:]]*#([^\\n]*\\\\[[:space:]]+)*[^\\n]*", awk, "#define some_symbol(x) \\  \r\n  foo();\\\r\n   printf(#x);", match_default, make_array(0, 53, 28, 42, -2, -2));
   // now try and test some unicode specific characters:
#if !BOOST_WORKAROUND(__BORLANDC__, < 0x560)
   TEST_REGEX_SEARCH_W(L"[[:unicode:]]+", perl, L"a\x0300\x0400z", match_default, make_array(1, 3, -2, -2));
   TEST_REGEX_SEARCH_W(L"[\x10-\xff]", perl, L"\x0300\x0400", match_default, make_array(-2, -2));
   TEST_REGEX_SEARCH_W(L"[\01-\05]{5}", perl, L"\x0300\x0400\x0300\x0400\x0300\x0400", match_default, make_array(-2, -2));
#if !BOOST_WORKAROUND(__DECCXX_VER, BOOST_TESTED_AT(60590042))
   TEST_REGEX_SEARCH_W(L"[\x300-\x400]+", perl, L"\x0300\x0400\x0300\x0400\x0300\x0400", match_default, make_array(0, 6, -2, -2));
   TEST_REGEX_SEARCH_W(L"[\\x{300}-\\x{400}]+", perl, L"\x0300\x0400\x0300\x0400\x0300\x0400", match_default, make_array(0, 6, -2, -2));
   TEST_REGEX_SEARCH_W(L"\\x{300}\\x{400}+", perl, L"\x0300\x0400\x0400\x0400\x0400\x0400", match_default, make_array(0, 6, -2, -2));
#endif
#endif
   // finally try some case insensitive matches:
   TEST_REGEX_SEARCH("0123456789@abcdefghijklmnopqrstuvwxyz\\[\\\\\\]\\^_`ABCDEFGHIJKLMNOPQRSTUVWXYZ\\{\\|\\}", perl|icase, "0123456789@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`abcdefghijklmnopqrstuvwxyz{|}", match_default, make_array(0, 72, -2, -2));
   TEST_REGEX_SEARCH("a", perl|icase, "A", match_default, make_array(0, 1, -2, -2));   
   TEST_REGEX_SEARCH("A", perl|icase, "a", match_default, make_array(0, 1, -2, -2));   
   TEST_REGEX_SEARCH("[abc]+", perl|icase, "abcABC", match_default, make_array(0, 6, -2, -2));   
   TEST_REGEX_SEARCH("[ABC]+", perl|icase, "abcABC", match_default, make_array(0, 6, -2, -2));