| | 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->poolForSize(generator.size()); |
| | 81 | return reinterpret_cast<CompiledRegExp>(generator.copyCode(pool.get())); |
| | 82 | } |
| | 83 | |
| | 84 | } } // namespace JSC::WREC |
| | 85 | |
| | 86 | #endif // ENABLE(WREC) |
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