1 /* 2 * Copyright (C) 2008 Apple Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26 #include "config.h" 27 #include "WREC.h" 28 29 #if ENABLE(WREC) 30 31 #include "CharacterClassConstructor.h" 32 #include "Interpreter.h" 33 #include "JSGlobalObject.h" 34 #include "RegisterFile.h" 35 #include "WRECFunctors.h" 36 #include "WRECParser.h" 37 #include "pcre_internal.h" 38 39 using namespace WTF; 40 41 namespace JSC { namespace WREC { 42 43 CompiledRegExp Generator::compileRegExp(JSGlobalData* globalData, const UString& pattern, unsigned* numSubpatterns_ptr, const char** error_ptr, RefPtr<ExecutablePool>& pool, bool ignoreCase, bool multiline) 44 { 45 if (pattern.size() > MAX_PATTERN_SIZE) { 46 *error_ptr = "regular expression too large"; 47 return 0; 48 } 49 50 Parser parser(pattern, ignoreCase, multiline); 51 Generator& generator = parser.generator(); 52 MacroAssembler::JumpList failures; 53 MacroAssembler::Jump endOfInput; 54 55 generator.generateEnter(); 56 generator.generateSaveIndex(); 57 58 Label beginPattern(&generator); 59 parser.parsePattern(failures); 60 generator.generateReturnSuccess(); 61 62 failures.link(&generator); 63 generator.generateIncrementIndex(&endOfInput); 64 parser.parsePattern(failures); 65 generator.generateReturnSuccess(); 66 67 failures.link(&generator); 68 generator.generateIncrementIndex(); 69 generator.generateJumpIfNotEndOfInput(beginPattern); 70 71 endOfInput.link(&generator); 72 generator.generateReturnFailure(); 73 74 if (parser.error()) { 75 *error_ptr = parser.syntaxError(); // NULL in the case of patterns that WREC doesn't support yet. 76 return 0; 77 } 78 79 *numSubpatterns_ptr = parser.numSubpatterns(); 80 pool = globalData->executableAllocator.poolForSize(generator.size()); 81 return reinterpret_cast<CompiledRegExp>(generator.copyCode(pool.get())); 82 } 83 84 } } // namespace JSC::WREC 85 86 #endif // ENABLE(WREC) 87
