christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 1 | // Copyright 2006-2008 Google Inc. All Rights Reserved. |
| 2 | // Redistribution and use in source and binary forms, with or without |
| 3 | // modification, are permitted provided that the following conditions are |
| 4 | // met: |
| 5 | // |
| 6 | // * Redistributions of source code must retain the above copyright |
| 7 | // notice, this list of conditions and the following disclaimer. |
| 8 | // * Redistributions in binary form must reproduce the above |
| 9 | // copyright notice, this list of conditions and the following |
| 10 | // disclaimer in the documentation and/or other materials provided |
| 11 | // with the distribution. |
| 12 | // * Neither the name of Google Inc. nor the names of its |
| 13 | // contributors may be used to endorse or promote products derived |
| 14 | // from this software without specific prior written permission. |
| 15 | // |
| 16 | // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 17 | // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 18 | // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 19 | // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 20 | // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 21 | // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 22 | // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 23 | // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 24 | // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 25 | // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 26 | // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 27 | |
| 28 | #ifndef V8_JSREGEXP_H_ |
| 29 | #define V8_JSREGEXP_H_ |
| 30 | |
| 31 | namespace v8 { namespace internal { |
| 32 | |
| 33 | class RegExpImpl { |
| 34 | public: |
| 35 | // Creates a regular expression literal in the old space. |
| 36 | // This function calls the garbage collector if necessary. |
mads.s.ager@gmail.com | 9a4089a | 2008-09-01 08:55:01 +0000 | [diff] [blame] | 37 | static Handle<Object> CreateRegExpLiteral(Handle<JSFunction> constructor, |
| 38 | Handle<String> pattern, |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 39 | Handle<String> flags, |
| 40 | bool* has_pending_exception); |
| 41 | |
| 42 | // Returns a string representation of a regular expression. |
| 43 | // Implements RegExp.prototype.toString, see ECMA-262 section 15.10.6.4. |
| 44 | // This function calls the garbage collector if necessary. |
| 45 | static Handle<String> ToString(Handle<Object> value); |
| 46 | |
| 47 | static Handle<Object> JsreCompile(Handle<JSValue> re, |
| 48 | Handle<String> pattern, |
| 49 | Handle<String> flags); |
| 50 | |
| 51 | // Implements RegExp.prototype.exec(string) function. |
| 52 | // See ECMA-262 section 15.10.6.2. |
| 53 | // This function calls the garbage collector if necessary. |
| 54 | static Handle<Object> JsreExec(Handle<JSValue> regexp, |
| 55 | Handle<String> subject, |
| 56 | Handle<Object> index); |
| 57 | |
| 58 | // Call RegExp.prototyp.exec(string) in a loop. |
| 59 | // Used by String.prototype.match and String.prototype.replace. |
| 60 | // This function calls the garbage collector if necessary. |
| 61 | static Handle<Object> JsreExecGlobal(Handle<JSValue> regexp, |
| 62 | Handle<String> subject); |
| 63 | |
| 64 | static void NewSpaceCollectionPrologue(); |
| 65 | static void OldSpaceCollectionPrologue(); |
| 66 | |
| 67 | private: |
| 68 | // Converts a source string to a 16 bit flat string. The string |
| 69 | // will be either sequential or it will be a SlicedString backed |
| 70 | // by a flat string. |
| 71 | static Handle<String> StringToTwoByte(Handle<String> pattern); |
| 72 | static Handle<String> CachedStringToTwoByte(Handle<String> pattern); |
| 73 | |
| 74 | static String* last_ascii_string_; |
| 75 | static String* two_byte_cached_string_; |
| 76 | |
| 77 | // Returns the caputure from the re. |
| 78 | static int JsreCapture(Handle<JSValue> re); |
| 79 | static ByteArray* JsreInternal(Handle<JSValue> re); |
| 80 | |
| 81 | // Call jsRegExpExecute once |
| 82 | static Handle<Object> JsreExecOnce(Handle<JSValue> regexp, |
| 83 | int num_captures, |
| 84 | Handle<String> subject, |
| 85 | int previous_index, |
| 86 | const uc16* utf8_subject, |
| 87 | int* ovector, |
| 88 | int ovector_length); |
| 89 | |
| 90 | // Set the subject cache. The previous string buffer is not deleted, so the |
| 91 | // caller should ensure that it doesn't leak. |
| 92 | static void SetSubjectCache(String* subject, char* utf8_subject, |
| 93 | int uft8_length, int character_position, |
| 94 | int utf8_position); |
| 95 | |
| 96 | // A one element cache of the last utf8_subject string and its length. The |
| 97 | // subject JS String object is cached in the heap. We also cache a |
| 98 | // translation between position and utf8 position. |
| 99 | static char* utf8_subject_cache_; |
| 100 | static int utf8_length_cache_; |
| 101 | static int utf8_position_; |
| 102 | static int character_position_; |
| 103 | }; |
| 104 | |
| 105 | |
| 106 | } } // namespace v8::internal |
| 107 | |
| 108 | #endif // V8_JSREGEXP_H_ |