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Unified Diff: src/harmony-string.js

Issue 1024813002: Remove harmony-strings flag. (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: Created 5 years, 9 months ago
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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();
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