Index: src/harmony-string.js |
diff --git a/src/harmony-string.js b/src/harmony-string.js |
deleted file mode 100644 |
index b3192937effd6a410f8ddee6946575e0d4676bc9..0000000000000000000000000000000000000000 |
--- a/src/harmony-string.js |
+++ /dev/null |
@@ -1,194 +0,0 @@ |
-// Copyright 2014 the V8 project authors. All rights reserved. |
-// Use of this source code is governed by a BSD-style license that can be |
-// found in the LICENSE file. |
- |
-"use strict"; |
- |
-// This file relies on the fact that the following declaration has been made |
-// in runtime.js: |
-// var $String = global.String; |
-// var $Array = global.Array; |
- |
-// ------------------------------------------------------------------- |
- |
-// ES6 draft 01-20-14, section 21.1.3.13 |
-function StringRepeat(count) { |
- CHECK_OBJECT_COERCIBLE(this, "String.prototype.repeat"); |
- |
- var s = TO_STRING_INLINE(this); |
- var n = ToInteger(count); |
- // 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 r = ""; |
- while (true) { |
- if (n & 1) r += s; |
- n >>= 1; |
- if (n === 0) return r; |
- s += s; |
- } |
-} |
- |
- |
-// ES6 draft 04-05-14, section 21.1.3.18 |
-function StringStartsWith(searchString /* position */) { // length == 1 |
- CHECK_OBJECT_COERCIBLE(this, "String.prototype.startsWith"); |
- |
- var s = TO_STRING_INLINE(this); |
- |
- if (IS_REGEXP(searchString)) { |
- throw MakeTypeError("first_argument_not_regexp", |
- ["String.prototype.startsWith"]); |
- } |
- |
- var ss = TO_STRING_INLINE(searchString); |
- var pos = 0; |
- if (%_ArgumentsLength() > 1) { |
- pos = %_Arguments(1); // position |
- pos = ToInteger(pos); |
- } |
- |
- var s_len = s.length; |
- var start = $min($max(pos, 0), s_len); |
- var ss_len = ss.length; |
- if (ss_len + start > s_len) { |
- return false; |
- } |
- |
- return %StringIndexOf(s, ss, start) === start; |
-} |
- |
- |
-// ES6 draft 04-05-14, section 21.1.3.7 |
-function StringEndsWith(searchString /* position */) { // length == 1 |
- CHECK_OBJECT_COERCIBLE(this, "String.prototype.endsWith"); |
- |
- var s = TO_STRING_INLINE(this); |
- |
- if (IS_REGEXP(searchString)) { |
- throw MakeTypeError("first_argument_not_regexp", |
- ["String.prototype.endsWith"]); |
- } |
- |
- var ss = TO_STRING_INLINE(searchString); |
- var s_len = s.length; |
- var pos = s_len; |
- if (%_ArgumentsLength() > 1) { |
- var arg = %_Arguments(1); // position |
- if (!IS_UNDEFINED(arg)) { |
- pos = ToInteger(arg); |
- } |
- } |
- |
- var end = $min($max(pos, 0), s_len); |
- var ss_len = ss.length; |
- var start = end - ss_len; |
- if (start < 0) { |
- return false; |
- } |
- |
- return %StringLastIndexOf(s, ss, start) === start; |
-} |
- |
- |
-// ES6 draft 04-05-14, section 21.1.3.6 |
-function StringIncludes(searchString /* position */) { // length == 1 |
- CHECK_OBJECT_COERCIBLE(this, "String.prototype.includes"); |
- |
- var s = TO_STRING_INLINE(this); |
- |
- if (IS_REGEXP(searchString)) { |
- throw MakeTypeError("first_argument_not_regexp", |
- ["String.prototype.includes"]); |
- } |
- |
- var ss = TO_STRING_INLINE(searchString); |
- var pos = 0; |
- if (%_ArgumentsLength() > 1) { |
- pos = %_Arguments(1); // position |
- pos = ToInteger(pos); |
- } |
- |
- var s_len = s.length; |
- var start = $min($max(pos, 0), s_len); |
- var ss_len = ss.length; |
- if (ss_len + start > s_len) { |
- return false; |
- } |
- |
- return %StringIndexOf(s, ss, start) !== -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( |
- "codePointAt", StringCodePointAt, |
- "includes", StringIncludes, |
- "endsWith", StringEndsWith, |
- "repeat", StringRepeat, |
- "startsWith", StringStartsWith |
- )); |
-} |
- |
-ExtendStringPrototype(); |