v8/src/jsregexp.h

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// Copyright 2006-2008 the V8 project authors. All rights reserved.
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * 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.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "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 THE COPYRIGHT
// OWNER 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.
#ifndef V8_JSREGEXP_H_
#define V8_JSREGEXP_H_
namespace v8 { namespace internal {
class RegExpImpl {
public:
// Creates a regular expression literal in the old space.
// This function calls the garbage collector if necessary.
static Handle<Object> CreateRegExpLiteral(Handle<JSFunction> constructor,
Handle<String> pattern,
Handle<String> flags,
bool* has_pending_exception);
// Returns a string representation of a regular expression.
// Implements RegExp.prototype.toString, see ECMA-262 section 15.10.6.4.
// This function calls the garbage collector if necessary.
static Handle<String> ToString(Handle<Object> value);
static Handle<Object> JsreCompile(Handle<JSValue> re,
Handle<String> pattern,
Handle<String> flags);
// Implements RegExp.prototype.exec(string) function.
// See ECMA-262 section 15.10.6.2.
// This function calls the garbage collector if necessary.
static Handle<Object> JsreExec(Handle<JSValue> regexp,
Handle<String> subject,
Handle<Object> index);
// Call RegExp.prototyp.exec(string) in a loop.
// Used by String.prototype.match and String.prototype.replace.
// This function calls the garbage collector if necessary.
static Handle<Object> JsreExecGlobal(Handle<JSValue> regexp,
Handle<String> subject);
static void NewSpaceCollectionPrologue();
static void OldSpaceCollectionPrologue();
private:
// Converts a source string to a 16 bit flat string. The string
// will be either sequential or it will be a SlicedString backed
// by a flat string.
static Handle<String> StringToTwoByte(Handle<String> pattern);
static Handle<String> CachedStringToTwoByte(Handle<String> pattern);
static String* last_ascii_string_;
static String* two_byte_cached_string_;
// Returns the caputure from the re.
static int JsreCapture(Handle<JSValue> re);
static ByteArray* JsreInternal(Handle<JSValue> re);
// Call jsRegExpExecute once
static Handle<Object> JsreExecOnce(Handle<JSValue> regexp,
int num_captures,
Handle<String> subject,
int previous_index,
const uc16* utf8_subject,
int* ovector,
int ovector_length);
// Set the subject cache. The previous string buffer is not deleted, so the
// caller should ensure that it doesn't leak.
static void SetSubjectCache(String* subject, char* utf8_subject,
int uft8_length, int character_position,
int utf8_position);
// A one element cache of the last utf8_subject string and its length. The
// subject JS String object is cached in the heap. We also cache a
// translation between position and utf8 position.
static char* utf8_subject_cache_;
static int utf8_length_cache_;
static int utf8_position_;
static int character_position_;
};
} } // namespace v8::internal
#endif // V8_JSREGEXP_H_