diff options
Diffstat (limited to 'src/3rdparty/javascriptcore/JavaScriptCore/wrec/WREC.cpp')
-rw-r--r-- | src/3rdparty/javascriptcore/JavaScriptCore/wrec/WREC.cpp | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/src/3rdparty/javascriptcore/JavaScriptCore/wrec/WREC.cpp b/src/3rdparty/javascriptcore/JavaScriptCore/wrec/WREC.cpp new file mode 100644 index 0000000..145a1ce --- /dev/null +++ b/src/3rdparty/javascriptcore/JavaScriptCore/wrec/WREC.cpp @@ -0,0 +1,86 @@ +/* + * Copyright (C) 2008 Apple Inc. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR + * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, + * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY + * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include "config.h" +#include "WREC.h" + +#if ENABLE(WREC) + +#include "CharacterClassConstructor.h" +#include "Interpreter.h" +#include "JSGlobalObject.h" +#include "RegisterFile.h" +#include "WRECFunctors.h" +#include "WRECParser.h" +#include "pcre_internal.h" + +using namespace WTF; + +namespace JSC { namespace WREC { + +CompiledRegExp Generator::compileRegExp(JSGlobalData* globalData, const UString& pattern, unsigned* numSubpatterns_ptr, const char** error_ptr, RefPtr<ExecutablePool>& pool, bool ignoreCase, bool multiline) +{ + if (pattern.size() > MAX_PATTERN_SIZE) { + *error_ptr = "regular expression too large"; + return 0; + } + + Parser parser(pattern, ignoreCase, multiline); + Generator& generator = parser.generator(); + MacroAssembler::JumpList failures; + MacroAssembler::Jump endOfInput; + + generator.generateEnter(); + generator.generateSaveIndex(); + + Label beginPattern(&generator); + parser.parsePattern(failures); + generator.generateReturnSuccess(); + + failures.link(&generator); + generator.generateIncrementIndex(&endOfInput); + parser.parsePattern(failures); + generator.generateReturnSuccess(); + + failures.link(&generator); + generator.generateIncrementIndex(); + generator.generateJumpIfNotEndOfInput(beginPattern); + + endOfInput.link(&generator); + generator.generateReturnFailure(); + + if (parser.error()) { + *error_ptr = parser.syntaxError(); // NULL in the case of patterns that WREC doesn't support yet. + return 0; + } + + *numSubpatterns_ptr = parser.numSubpatterns(); + pool = globalData->executableAllocator.poolForSize(generator.size()); + return reinterpret_cast<CompiledRegExp>(generator.copyCode(pool.get())); +} + +} } // namespace JSC::WREC + +#endif // ENABLE(WREC) |