Update to V8 2.1.9.1

1 files changed, 528 insertions, 0 deletions

diff --git a/deps/v8/src/regexp.js b/deps/v8/src/regexp.js
new file mode 100644
index 000000000..dc1b0429f
--- /dev/null
+++ b/deps/v8/src/regexp.js
@@ -0,0 +1,528 @@
+// Copyright 2006-2009 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.
+
+// Expect $Object = global.Object;
+// Expect $Array = global.Array;
+
+const $RegExp = global.RegExp;
+
+// A recursive descent parser for Patterns according to the grammar of
+// ECMA-262 15.10.1, with deviations noted below.
+function DoConstructRegExp(object, pattern, flags, isConstructorCall) {
+  // RegExp : Called as constructor; see ECMA-262, section 15.10.4.
+  if (IS_REGEXP(pattern)) {
+    if (!IS_UNDEFINED(flags)) {
+      throw MakeTypeError('regexp_flags', []);
+    }
+    flags = (pattern.global ? 'g' : '')
+        + (pattern.ignoreCase ? 'i' : '')
+        + (pattern.multiline ? 'm' : '');
+    pattern = pattern.source;
+  }
+
+  pattern = IS_UNDEFINED(pattern) ? '' : ToString(pattern);
+  flags = IS_UNDEFINED(flags) ? '' : ToString(flags);
+
+  var global = false;
+  var ignoreCase = false;
+  var multiline = false;
+
+  for (var i = 0; i < flags.length; i++) {
+    var c = StringCharAt.call(flags, i);
+    switch (c) {
+      case 'g':
+        // Allow duplicate flags to be consistent with JSC and others.
+        global = true;
+        break;
+      case 'i':
+        ignoreCase = true;
+        break;
+      case 'm':
+        multiline = true;
+        break;
+      default:
+        // Ignore flags that have no meaning to be consistent with
+        // JSC.
+        break;
+    }
+  }
+
+  if (isConstructorCall) {
+    // ECMA-262, section 15.10.7.1.
+    %SetProperty(object, 'source', pattern,
+                 DONT_DELETE |  READ_ONLY | DONT_ENUM);
+
+    // ECMA-262, section 15.10.7.2.
+    %SetProperty(object, 'global', global, DONT_DELETE | READ_ONLY | DONT_ENUM);
+
+    // ECMA-262, section 15.10.7.3.
+    %SetProperty(object, 'ignoreCase', ignoreCase,
+                 DONT_DELETE | READ_ONLY | DONT_ENUM);
+
+    // ECMA-262, section 15.10.7.4.
+    %SetProperty(object, 'multiline', multiline,
+                 DONT_DELETE | READ_ONLY | DONT_ENUM);
+
+    // ECMA-262, section 15.10.7.5.
+    %SetProperty(object, 'lastIndex', 0, DONT_DELETE | DONT_ENUM);
+  } else { // RegExp is being recompiled via RegExp.prototype.compile.
+    %IgnoreAttributesAndSetProperty(object, 'source', pattern);
+    %IgnoreAttributesAndSetProperty(object, 'global', global);
+    %IgnoreAttributesAndSetProperty(object, 'ignoreCase', ignoreCase);
+    %IgnoreAttributesAndSetProperty(object, 'multiline', multiline);
+    %IgnoreAttributesAndSetProperty(object, 'lastIndex', 0);
+    regExpCache.type = 'none';
+  }
+
+  // Call internal function to compile the pattern.
+  %RegExpCompile(object, pattern, flags);
+}
+
+
+function RegExpConstructor(pattern, flags) {
+  if (%_IsConstructCall()) {
+    DoConstructRegExp(this, pattern, flags, true);
+  } else {
+    // RegExp : Called as function; see ECMA-262, section 15.10.3.1.
+    if (IS_REGEXP(pattern) && IS_UNDEFINED(flags)) {
+      return pattern;
+    }
+    return new $RegExp(pattern, flags);
+  }
+}
+
+
+// Deprecated RegExp.prototype.compile method.  We behave like the constructor
+// were called again.  In SpiderMonkey, this method returns the regexp object.
+// In JSC, it returns undefined.  For compatibility with JSC, we match their
+// behavior.
+function CompileRegExp(pattern, flags) {
+  // Both JSC and SpiderMonkey treat a missing pattern argument as the
+  // empty subject string, and an actual undefined value passed as the
+  // pattern as the string 'undefined'.  Note that JSC is inconsistent
+  // here, treating undefined values differently in
+  // RegExp.prototype.compile and in the constructor, where they are
+  // the empty string.  For compatibility with JSC, we match their
+  // behavior.
+  if (IS_UNDEFINED(pattern) && %_ArgumentsLength() != 0) {
+    DoConstructRegExp(this, 'undefined', flags, false);
+  } else {
+    DoConstructRegExp(this, pattern, flags, false);
+  }
+}
+
+
+function DoRegExpExec(regexp, string, index) {
+  return %_RegExpExec(regexp, string, index, lastMatchInfo);
+}
+
+
+function RegExpCache() {
+  this.type = 'none';
+  this.regExp = 0;
+  this.subject = 0;
+  this.replaceString = 0;
+  this.lastIndex = 0;
+  this.answer = 0;
+}
+
+
+var regExpCache = new RegExpCache();
+
+
+function CloneRegexpAnswer(array) {
+  var len = array.length;
+  var answer = new $Array(len);
+  for (var i = 0; i < len; i++) {
+    answer[i] = array[i];
+  }
+  answer.index = array.index;
+  answer.input = array.input;
+  return answer;
+}
+
+
+function RegExpExec(string) {
+  if (!IS_REGEXP(this)) {
+    throw MakeTypeError('incompatible_method_receiver',
+                        ['RegExp.prototype.exec', this]);
+  }
+
+  var cache = regExpCache;
+
+  if (%_ObjectEquals(cache.type, 'exec') &&
+      %_ObjectEquals(cache.lastIndex, this.lastIndex) &&
+      %_ObjectEquals(cache.regExp, this) &&
+      %_ObjectEquals(cache.subject, string)) {
+    var last = cache.answer;
+    if (last == null) {
+      return last;
+    } else {
+      return CloneRegexpAnswer(last);
+    }
+  }
+
+  if (%_ArgumentsLength() == 0) {
+    var regExpInput = LAST_INPUT(lastMatchInfo);
+    if (IS_UNDEFINED(regExpInput)) {
+      throw MakeError('no_input_to_regexp', [this]);
+    }
+    string = regExpInput;
+  }
+  var s;
+  if (IS_STRING(string)) {
+    s = string;
+  } else {
+    s = ToString(string);
+  }
+  var lastIndex = this.lastIndex;
+
+  var i = this.global ? TO_INTEGER(lastIndex) : 0;
+
+  if (i < 0 || i > s.length) {
+    this.lastIndex = 0;
+    return null;
+  }
+
+  %_Log('regexp', 'regexp-exec,%0r,%1S,%2i', [this, s, lastIndex]);
+  // matchIndices is either null or the lastMatchInfo array.
+  var matchIndices = %_RegExpExec(this, s, i, lastMatchInfo);
+
+  if (matchIndices == null) {
+    if (this.global) this.lastIndex = 0;
+    cache.lastIndex = lastIndex;
+    cache.regExp = this;
+    cache.subject = s;
+    cache.answer = matchIndices;  // Null.
+    cache.type = 'exec';
+    return matchIndices;        // No match.
+  }
+
+  var numResults = NUMBER_OF_CAPTURES(lastMatchInfo) >> 1;
+  var result;
+  if (numResults === 1) {
+    var matchStart = lastMatchInfo[CAPTURE(0)];
+    var matchEnd = lastMatchInfo[CAPTURE(1)];
+    result = [SubString(s, matchStart, matchEnd)];
+  } else {
+    result = new $Array(numResults);
+    for (var i = 0; i < numResults; i++) {
+      var matchStart = lastMatchInfo[CAPTURE(i << 1)];
+      var matchEnd = lastMatchInfo[CAPTURE((i << 1) + 1)];
+      if (matchStart != -1 && matchEnd != -1) {
+        result[i] = SubString(s, matchStart, matchEnd);
+      } else {
+        // Make sure the element is present. Avoid reading the undefined
+        // property from the global object since this may change.
+        result[i] = void 0;
+      }
+    }
+  }
+
+  result.index = lastMatchInfo[CAPTURE0];
+  result.input = s;
+  if (this.global) {
+    this.lastIndex = lastMatchInfo[CAPTURE1];
+    return result;
+  } else {
+    cache.regExp = this;
+    cache.subject = s;
+    cache.lastIndex = lastIndex;
+    cache.answer = result;
+    cache.type = 'exec';
+    return CloneRegexpAnswer(result);
+  }
+}
+
+
+// Section 15.10.6.3 doesn't actually make sense, but the intention seems to be
+// that test is defined in terms of String.prototype.exec. However, it probably
+// means the original value of String.prototype.exec, which is what everybody
+// else implements.
+function RegExpTest(string) {
+  if (!IS_REGEXP(this)) {
+    throw MakeTypeError('incompatible_method_receiver',
+                        ['RegExp.prototype.test', this]);
+  }
+  if (%_ArgumentsLength() == 0) {
+    var regExpInput = LAST_INPUT(lastMatchInfo);
+    if (IS_UNDEFINED(regExpInput)) {
+      throw MakeError('no_input_to_regexp', [this]);
+    }
+    string = regExpInput;
+  }
+  var s;
+  if (IS_STRING(string)) {
+    s = string;
+  } else {
+    s = ToString(string);
+  }
+
+  var lastIndex = this.lastIndex;
+
+  var cache = regExpCache;
+
+  if (%_ObjectEquals(cache.type, 'test') &&
+      %_ObjectEquals(cache.regExp, this) &&
+      %_ObjectEquals(cache.subject, string) &&
+      %_ObjectEquals(cache.lastIndex, lastIndex)) {
+    return cache.answer;
+  }
+
+  var length = s.length;
+  var i = this.global ? TO_INTEGER(lastIndex) : 0;
+
+  cache.type = 'test';
+  cache.regExp = this;
+  cache.subject = s;
+  cache.lastIndex = i;
+
+  if (i < 0 || i > s.length) {
+    this.lastIndex = 0;
+    cache.answer = false;
+    return false;
+  }
+
+  %_Log('regexp', 'regexp-exec,%0r,%1S,%2i', [this, s, lastIndex]);
+  // matchIndices is either null or the lastMatchInfo array.
+  var matchIndices = %_RegExpExec(this, s, i, lastMatchInfo);
+
+  if (matchIndices == null) {
+    if (this.global) this.lastIndex = 0;
+    cache.answer = false;
+    return false;
+  }
+
+  if (this.global) this.lastIndex = lastMatchInfo[CAPTURE1];
+  cache.answer = true;
+  return true;
+}
+
+
+function RegExpToString() {
+  // If this.source is an empty string, output /(?:)/.
+  // http://bugzilla.mozilla.org/show_bug.cgi?id=225550
+  // ecma_2/RegExp/properties-001.js.
+  var src = this.source ? this.source : '(?:)';
+  var result = '/' + src + '/';
+  if (this.global)
+    result += 'g';
+  if (this.ignoreCase)
+    result += 'i';
+  if (this.multiline)
+    result += 'm';
+  return result;
+}
+
+
+// Getters for the static properties lastMatch, lastParen, leftContext, and
+// rightContext of the RegExp constructor.  The properties are computed based
+// on the captures array of the last successful match and the subject string
+// of the last successful match.
+function RegExpGetLastMatch() {
+  if (lastMatchInfoOverride) { return lastMatchInfoOverride[0]; }
+  var regExpSubject = LAST_SUBJECT(lastMatchInfo);
+  return SubString(regExpSubject,
+                   lastMatchInfo[CAPTURE0],
+                   lastMatchInfo[CAPTURE1]);
+}
+
+
+function RegExpGetLastParen() {
+  if (lastMatchInfoOverride) {
+    var override = lastMatchInfoOverride;
+    if (override.length <= 3) return ''; 
+    return override[override.length - 3];
+  }
+  var length = NUMBER_OF_CAPTURES(lastMatchInfo);
+  if (length <= 2) return '';  // There were no captures.
+  // We match the SpiderMonkey behavior: return the substring defined by the
+  // last pair (after the first pair) of elements of the capture array even if
+  // it is empty.
+  var regExpSubject = LAST_SUBJECT(lastMatchInfo);
+  var start = lastMatchInfo[CAPTURE(length - 2)];
+  var end = lastMatchInfo[CAPTURE(length - 1)];
+  if (start != -1 && end != -1) {
+    return SubString(regExpSubject, start, end);
+  }
+  return "";
+}
+
+
+function RegExpGetLeftContext() {
+  var start_index;
+  var subject;
+  if (!lastMatchInfoOverride) {
+    start_index = lastMatchInfo[CAPTURE0];
+    subject = LAST_SUBJECT(lastMatchInfo);
+  } else {
+    var override = lastMatchInfoOverride;
+    start_index = override[override.length - 2];
+    subject = override[override.length - 1];
+  }
+  return SubString(subject, 0, start_index);
+}
+
+
+function RegExpGetRightContext() {
+  var start_index;
+  var subject;
+  if (!lastMatchInfoOverride) {
+    start_index = lastMatchInfo[CAPTURE1];
+    subject = LAST_SUBJECT(lastMatchInfo);
+  } else {
+    var override = lastMatchInfoOverride;
+    subject = override[override.length - 1];
+    start_index = override[override.length - 2] + subject.length;
+  }
+  return SubString(subject, start_index, subject.length);
+}
+
+
+// The properties $1..$9 are the first nine capturing substrings of the last
+// successful match, or ''.  The function RegExpMakeCaptureGetter will be
+// called with indices from 1 to 9.
+function RegExpMakeCaptureGetter(n) {
+  return function() {
+    if (lastMatchInfoOverride) {
+      if (n < lastMatchInfoOverride.length - 2) return lastMatchInfoOverride[n];
+      return '';
+    }
+    var index = n * 2;
+    if (index >= NUMBER_OF_CAPTURES(lastMatchInfo)) return '';
+    var matchStart = lastMatchInfo[CAPTURE(index)];
+    var matchEnd = lastMatchInfo[CAPTURE(index + 1)];
+    if (matchStart == -1 || matchEnd == -1) return '';
+    return SubString(LAST_SUBJECT(lastMatchInfo), matchStart, matchEnd);
+  };
+}
+
+
+// Property of the builtins object for recording the result of the last
+// regexp match.  The property lastMatchInfo includes the matchIndices
+// array of the last successful regexp match (an array of start/end index
+// pairs for the match and all the captured substrings), the invariant is
+// that there are at least two capture indeces.  The array also contains
+// the subject string for the last successful match.
+var lastMatchInfo = [
+    2,                 // REGEXP_NUMBER_OF_CAPTURES
+    "",                // Last subject.
+    void 0,            // Last input - settable with RegExpSetInput.
+    0,                 // REGEXP_FIRST_CAPTURE + 0
+    0,                 // REGEXP_FIRST_CAPTURE + 1
+];
+
+// Override last match info with an array of actual substrings.
+// Used internally by replace regexp with function.
+// The array has the format of an "apply" argument for a replacement 
+// function. 
+var lastMatchInfoOverride = null;
+
+// -------------------------------------------------------------------
+
+function SetupRegExp() {
+  %FunctionSetInstanceClassName($RegExp, 'RegExp');
+  %FunctionSetPrototype($RegExp, new $Object());
+  %SetProperty($RegExp.prototype, 'constructor', $RegExp, DONT_ENUM);
+  %SetCode($RegExp, RegExpConstructor);
+
+  InstallFunctions($RegExp.prototype, DONT_ENUM, $Array(
+    "exec", RegExpExec,
+    "test", RegExpTest,
+    "toString", RegExpToString,
+    "compile", CompileRegExp
+  ));
+
+  // The length of compile is 1 in SpiderMonkey.
+  %FunctionSetLength($RegExp.prototype.compile, 1);
+
+  // The properties input, $input, and $_ are aliases for each other.  When this
+  // value is set the value it is set to is coerced to a string. 
+  // Getter and setter for the input.
+  function RegExpGetInput() {
+    var regExpInput = LAST_INPUT(lastMatchInfo);
+    return IS_UNDEFINED(regExpInput) ? "" : regExpInput;
+  }
+  function RegExpSetInput(string) {
+    regExpCache.type = 'none';
+    LAST_INPUT(lastMatchInfo) = ToString(string);
+  };
+
+  %DefineAccessor($RegExp, 'input', GETTER, RegExpGetInput, DONT_DELETE);
+  %DefineAccessor($RegExp, 'input', SETTER, RegExpSetInput, DONT_DELETE);
+  %DefineAccessor($RegExp, '$_', GETTER, RegExpGetInput, DONT_ENUM | DONT_DELETE);
+  %DefineAccessor($RegExp, '$_', SETTER, RegExpSetInput, DONT_ENUM | DONT_DELETE);
+  %DefineAccessor($RegExp, '$input', GETTER, RegExpGetInput, DONT_ENUM | DONT_DELETE);
+  %DefineAccessor($RegExp, '$input', SETTER, RegExpSetInput, DONT_ENUM | DONT_DELETE);
+
+  // The properties multiline and $* are aliases for each other.  When this
+  // value is set in SpiderMonkey, the value it is set to is coerced to a
+  // boolean.  We mimic that behavior with a slight difference: in SpiderMonkey
+  // the value of the expression 'RegExp.multiline = null' (for instance) is the
+  // boolean false (ie, the value after coercion), while in V8 it is the value
+  // null (ie, the value before coercion).
+
+  // Getter and setter for multiline.
+  var multiline = false;
+  function RegExpGetMultiline() { return multiline; };
+  function RegExpSetMultiline(flag) { multiline = flag ? true : false; };
+
+  %DefineAccessor($RegExp, 'multiline', GETTER, RegExpGetMultiline, DONT_DELETE);
+  %DefineAccessor($RegExp, 'multiline', SETTER, RegExpSetMultiline, DONT_DELETE);
+  %DefineAccessor($RegExp, '$*', GETTER, RegExpGetMultiline, DONT_ENUM | DONT_DELETE);
+  %DefineAccessor($RegExp, '$*', SETTER, RegExpSetMultiline, DONT_ENUM | DONT_DELETE);
+
+
+  function NoOpSetter(ignored) {}
+
+
+  // Static properties set by a successful match.
+  %DefineAccessor($RegExp, 'lastMatch', GETTER, RegExpGetLastMatch, DONT_DELETE);
+  %DefineAccessor($RegExp, 'lastMatch', SETTER, NoOpSetter, DONT_DELETE);
+  %DefineAccessor($RegExp, '$&', GETTER, RegExpGetLastMatch, DONT_ENUM | DONT_DELETE);
+  %DefineAccessor($RegExp, '$&', SETTER, NoOpSetter, DONT_ENUM | DONT_DELETE);
+  %DefineAccessor($RegExp, 'lastParen', GETTER, RegExpGetLastParen, DONT_DELETE);
+  %DefineAccessor($RegExp, 'lastParen', SETTER, NoOpSetter, DONT_DELETE);
+  %DefineAccessor($RegExp, '$+', GETTER, RegExpGetLastParen, DONT_ENUM | DONT_DELETE);
+  %DefineAccessor($RegExp, '$+', SETTER, NoOpSetter, DONT_ENUM | DONT_DELETE);
+  %DefineAccessor($RegExp, 'leftContext', GETTER, RegExpGetLeftContext, DONT_DELETE);
+  %DefineAccessor($RegExp, 'leftContext', SETTER, NoOpSetter, DONT_DELETE);
+  %DefineAccessor($RegExp, '$`', GETTER, RegExpGetLeftContext, DONT_ENUM | DONT_DELETE);
+  %DefineAccessor($RegExp, '$`', SETTER, NoOpSetter, DONT_ENUM | DONT_DELETE);
+  %DefineAccessor($RegExp, 'rightContext', GETTER, RegExpGetRightContext, DONT_DELETE);
+  %DefineAccessor($RegExp, 'rightContext', SETTER, NoOpSetter, DONT_DELETE);
+  %DefineAccessor($RegExp, "$'", GETTER, RegExpGetRightContext, DONT_ENUM | DONT_DELETE);
+  %DefineAccessor($RegExp, "$'", SETTER, NoOpSetter, DONT_ENUM | DONT_DELETE);
+
+  for (var i = 1; i < 10; ++i) {
+    %DefineAccessor($RegExp, '$' + i, GETTER, RegExpMakeCaptureGetter(i), DONT_DELETE);
+    %DefineAccessor($RegExp, '$' + i, SETTER, NoOpSetter, DONT_DELETE);
+  }
+}
+
+
+SetupRegExp();