// Copyright 2014 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.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
'use strict';
var s = TO_STRING_INLINE(this);
var n = ToInteger(count);
- if (n < 0 || !NUMBER_IS_FINITE(n)) {
+ // The maximum string length is stored in a smi, so a longer repeat
+ // must result in a range error.
+ if (n < 0 || n > %_MaxSmi()) {
throw MakeRangeError("invalid_count_value", []);
}
- var elements = new InternalArray(n);
- for (var i = 0; i < n; i++) {
- elements[i] = s;
+ var r = "";
+ while (true) {
+ if (n & 1) r += s;
+ n >>= 1;
+ if (n === 0) return r;
+ s += s;
}
-
- return %StringBuilderConcat(elements, n, "");
}
-// ES6 draft 01-20-14, section 21.1.3.18
+// ES6 draft 04-05-14, section 21.1.3.18
function StringStartsWith(searchString /* position */) { // length == 1
CHECK_OBJECT_COERCIBLE(this, "String.prototype.startsWith");
}
-// ES6 draft 01-20-14, section 21.1.3.7
+// ES6 draft 04-05-14, section 21.1.3.7
function StringEndsWith(searchString /* position */) { // length == 1
CHECK_OBJECT_COERCIBLE(this, "String.prototype.endsWith");
}
-// ES6 draft 01-20-14, section 21.1.3.6
+// ES6 draft 04-05-14, section 21.1.3.6
function StringContains(searchString /* position */) { // length == 1
CHECK_OBJECT_COERCIBLE(this, "String.prototype.contains");
var s = TO_STRING_INLINE(this);
+
+ if (IS_REGEXP(searchString)) {
+ throw MakeTypeError("first_argument_not_regexp",
+ ["String.prototype.contains"]);
+ }
+
var ss = TO_STRING_INLINE(searchString);
var pos = 0;
if (%_ArgumentsLength() > 1) {
}
+// ES6 Draft 05-22-2014, section 21.1.3.3
+function StringCodePointAt(pos) {
+ CHECK_OBJECT_COERCIBLE(this, "String.prototype.codePointAt");
+
+ var string = TO_STRING_INLINE(this);
+ var size = string.length;
+ pos = TO_INTEGER(pos);
+ if (pos < 0 || pos >= size) {
+ return UNDEFINED;
+ }
+ var first = %_StringCharCodeAt(string, pos);
+ if (first < 0xD800 || first > 0xDBFF || pos + 1 == size) {
+ return first;
+ }
+ var second = %_StringCharCodeAt(string, pos + 1);
+ if (second < 0xDC00 || second > 0xDFFF) {
+ return first;
+ }
+ return (first - 0xD800) * 0x400 + second + 0x2400;
+}
+
+
+// ES6 Draft 05-22-2014, section 21.1.2.2
+function StringFromCodePoint(_) { // length = 1
+ var code;
+ var length = %_ArgumentsLength();
+ var index;
+ var result = "";
+ for (index = 0; index < length; index++) {
+ code = %_Arguments(index);
+ if (!%_IsSmi(code)) {
+ code = ToNumber(code);
+ }
+ if (code < 0 || code > 0x10FFFF || code !== TO_INTEGER(code)) {
+ throw MakeRangeError("invalid_code_point", [code]);
+ }
+ if (code <= 0xFFFF) {
+ result += %_StringCharFromCode(code);
+ } else {
+ code -= 0x10000;
+ result += %_StringCharFromCode((code >>> 10) & 0x3FF | 0xD800);
+ result += %_StringCharFromCode(code & 0x3FF | 0xDC00);
+ }
+ }
+ return result;
+}
+
+
// -------------------------------------------------------------------
function ExtendStringPrototype() {
%CheckIsBootstrapping();
+ // Set up the non-enumerable functions on the String object.
+ InstallFunctions($String, DONT_ENUM, $Array(
+ "fromCodePoint", StringFromCodePoint
+ ));
+
// Set up the non-enumerable functions on the String prototype object.
InstallFunctions($String.prototype, DONT_ENUM, $Array(
- "repeat", StringRepeat,
- "startsWith", StringStartsWith,
+ "codePointAt", StringCodePointAt,
+ "contains", StringContains,
"endsWith", StringEndsWith,
- "contains", StringContains
+ "repeat", StringRepeat,
+ "startsWith", StringStartsWith
));
}
projects / platform / framework / web / crosswalk.git / blobdiff