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Side by Side Diff: src/string-iterator.js

Issue 1082703003: Wrap typed array implementations in functions. (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: Created 5 years, 8 months ago
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1 // Copyright 2014 the V8 project authors. All rights reserved. 1 // Copyright 2014 the V8 project authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 (function() { 5 (function() {
6 6
7 "use strict"; 7 "use strict";
8 8
9 %CheckIsBootstrapping(); 9 %CheckIsBootstrapping();
10 10
(...skipping 30 matching lines...) Expand all
41 function StringIteratorNext() { 41 function StringIteratorNext() {
42 var iterator = ToObject(this); 42 var iterator = ToObject(this);
43 43
44 if (!HAS_DEFINED_PRIVATE(iterator, stringIteratorNextIndexSymbol)) { 44 if (!HAS_DEFINED_PRIVATE(iterator, stringIteratorNextIndexSymbol)) {
45 throw MakeTypeError('incompatible_method_receiver', 45 throw MakeTypeError('incompatible_method_receiver',
46 ['String Iterator.prototype.next']); 46 ['String Iterator.prototype.next']);
47 } 47 }
48 48
49 var s = GET_PRIVATE(iterator, stringIteratorIteratedStringSymbol); 49 var s = GET_PRIVATE(iterator, stringIteratorIteratedStringSymbol);
50 if (IS_UNDEFINED(s)) { 50 if (IS_UNDEFINED(s)) {
51 return CreateIteratorResultObject(UNDEFINED, true); 51 return $iteratorCreateResultObject(UNDEFINED, true);
52 } 52 }
53 53
54 var position = GET_PRIVATE(iterator, stringIteratorNextIndexSymbol); 54 var position = GET_PRIVATE(iterator, stringIteratorNextIndexSymbol);
55 var length = TO_UINT32(s.length); 55 var length = TO_UINT32(s.length);
56 56
57 if (position >= length) { 57 if (position >= length) {
58 SET_PRIVATE(iterator, stringIteratorIteratedStringSymbol, 58 SET_PRIVATE(iterator, stringIteratorIteratedStringSymbol,
59 UNDEFINED); 59 UNDEFINED);
60 return CreateIteratorResultObject(UNDEFINED, true); 60 return $iteratorCreateResultObject(UNDEFINED, true);
61 } 61 }
62 62
63 var first = %_StringCharCodeAt(s, position); 63 var first = %_StringCharCodeAt(s, position);
64 var resultString = %_StringCharFromCode(first); 64 var resultString = %_StringCharFromCode(first);
65 position++; 65 position++;
66 66
67 if (first >= 0xD800 && first <= 0xDBFF && position < length) { 67 if (first >= 0xD800 && first <= 0xDBFF && position < length) {
68 var second = %_StringCharCodeAt(s, position); 68 var second = %_StringCharCodeAt(s, position);
69 if (second >= 0xDC00 && second <= 0xDFFF) { 69 if (second >= 0xDC00 && second <= 0xDFFF) {
70 resultString += %_StringCharFromCode(second); 70 resultString += %_StringCharFromCode(second);
71 position++; 71 position++;
72 } 72 }
73 } 73 }
74 74
75 SET_PRIVATE(iterator, stringIteratorNextIndexSymbol, position); 75 SET_PRIVATE(iterator, stringIteratorNextIndexSymbol, position);
76 76
77 return CreateIteratorResultObject(resultString, false); 77 return $iteratorCreateResultObject(resultString, false);
78 } 78 }
79 79
80 80
81 // 21.1.3.27 String.prototype [ @@iterator ]( ) 81 // 21.1.3.27 String.prototype [ @@iterator ]( )
82 function StringPrototypeIterator() { 82 function StringPrototypeIterator() {
83 return CreateStringIterator(this); 83 return CreateStringIterator(this);
84 } 84 }
85 85
86 //------------------------------------------------------------------- 86 //-------------------------------------------------------------------
87 87
88 %FunctionSetPrototype(StringIterator, new GlobalObject()); 88 %FunctionSetPrototype(StringIterator, new GlobalObject());
89 %FunctionSetInstanceClassName(StringIterator, 'String Iterator'); 89 %FunctionSetInstanceClassName(StringIterator, 'String Iterator');
90 90
91 InstallFunctions(StringIterator.prototype, DONT_ENUM, [ 91 InstallFunctions(StringIterator.prototype, DONT_ENUM, [
92 'next', StringIteratorNext 92 'next', StringIteratorNext
93 ]); 93 ]);
94 %FunctionSetName(StringIteratorIterator, '[Symbol.iterator]'); 94 %FunctionSetName(StringIteratorIterator, '[Symbol.iterator]');
95 %AddNamedProperty(StringIterator.prototype, symbolIterator, 95 %AddNamedProperty(StringIterator.prototype, symbolIterator,
96 StringIteratorIterator, DONT_ENUM); 96 StringIteratorIterator, DONT_ENUM);
97 %AddNamedProperty(StringIterator.prototype, symbolToStringTag, 97 %AddNamedProperty(StringIterator.prototype, symbolToStringTag,
98 "String Iterator", READ_ONLY | DONT_ENUM); 98 "String Iterator", READ_ONLY | DONT_ENUM);
99 99
100 %FunctionSetName(StringPrototypeIterator, '[Symbol.iterator]'); 100 %FunctionSetName(StringPrototypeIterator, '[Symbol.iterator]');
101 %AddNamedProperty(GlobalString.prototype, symbolIterator, 101 %AddNamedProperty(GlobalString.prototype, symbolIterator,
102 StringPrototypeIterator, DONT_ENUM); 102 StringPrototypeIterator, DONT_ENUM);
103 103
104 })(); 104 })();
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