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

Issue 1154483002: Hook up more import/exports in natives. (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: do not leak utils object Created 5 years, 7 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(global, utils) { 5 (function(global, utils) {
6 6
7 "use strict"; 7 "use strict";
8 8
9 %CheckIsBootstrapping(); 9 %CheckIsBootstrapping();
10 10
11 // -------------------------------------------------------------------
12 // Imports
13
11 var GlobalString = global.String; 14 var GlobalString = global.String;
12 15
13 //------------------------------------------------------------------- 16 var ArrayIteratorCreateResultObject;
17
18 utils.Import(function(from) {
19 ArrayIteratorCreateResultObject = from.ArrayIteratorCreateResultObject;
20 });
21
22 // -------------------------------------------------------------------
14 23
15 var stringIteratorIteratedStringSymbol = 24 var stringIteratorIteratedStringSymbol =
16 GLOBAL_PRIVATE("StringIterator#iteratedString"); 25 GLOBAL_PRIVATE("StringIterator#iteratedString");
17 var stringIteratorNextIndexSymbol = GLOBAL_PRIVATE("StringIterator#next"); 26 var stringIteratorNextIndexSymbol = GLOBAL_PRIVATE("StringIterator#next");
18 27
19 28
20 function StringIterator() {} 29 function StringIterator() {}
21 30
22 31
23 // 21.1.5.1 CreateStringIterator Abstract Operation 32 // 21.1.5.1 CreateStringIterator Abstract Operation
(...skipping 10 matching lines...) Expand all
34 function StringIteratorNext() { 43 function StringIteratorNext() {
35 var iterator = $toObject(this); 44 var iterator = $toObject(this);
36 45
37 if (!HAS_DEFINED_PRIVATE(iterator, stringIteratorNextIndexSymbol)) { 46 if (!HAS_DEFINED_PRIVATE(iterator, stringIteratorNextIndexSymbol)) {
38 throw MakeTypeError(kIncompatibleMethodReceiver, 47 throw MakeTypeError(kIncompatibleMethodReceiver,
39 'String Iterator.prototype.next'); 48 'String Iterator.prototype.next');
40 } 49 }
41 50
42 var s = GET_PRIVATE(iterator, stringIteratorIteratedStringSymbol); 51 var s = GET_PRIVATE(iterator, stringIteratorIteratedStringSymbol);
43 if (IS_UNDEFINED(s)) { 52 if (IS_UNDEFINED(s)) {
44 return $iteratorCreateResultObject(UNDEFINED, true); 53 return ArrayIteratorCreateResultObject(UNDEFINED, true);
45 } 54 }
46 55
47 var position = GET_PRIVATE(iterator, stringIteratorNextIndexSymbol); 56 var position = GET_PRIVATE(iterator, stringIteratorNextIndexSymbol);
48 var length = TO_UINT32(s.length); 57 var length = TO_UINT32(s.length);
49 58
50 if (position >= length) { 59 if (position >= length) {
51 SET_PRIVATE(iterator, stringIteratorIteratedStringSymbol, 60 SET_PRIVATE(iterator, stringIteratorIteratedStringSymbol,
52 UNDEFINED); 61 UNDEFINED);
53 return $iteratorCreateResultObject(UNDEFINED, true); 62 return ArrayIteratorCreateResultObject(UNDEFINED, true);
54 } 63 }
55 64
56 var first = %_StringCharCodeAt(s, position); 65 var first = %_StringCharCodeAt(s, position);
57 var resultString = %_StringCharFromCode(first); 66 var resultString = %_StringCharFromCode(first);
58 position++; 67 position++;
59 68
60 if (first >= 0xD800 && first <= 0xDBFF && position < length) { 69 if (first >= 0xD800 && first <= 0xDBFF && position < length) {
61 var second = %_StringCharCodeAt(s, position); 70 var second = %_StringCharCodeAt(s, position);
62 if (second >= 0xDC00 && second <= 0xDFFF) { 71 if (second >= 0xDC00 && second <= 0xDFFF) {
63 resultString += %_StringCharFromCode(second); 72 resultString += %_StringCharFromCode(second);
64 position++; 73 position++;
65 } 74 }
66 } 75 }
67 76
68 SET_PRIVATE(iterator, stringIteratorNextIndexSymbol, position); 77 SET_PRIVATE(iterator, stringIteratorNextIndexSymbol, position);
69 78
70 return $iteratorCreateResultObject(resultString, false); 79 return ArrayIteratorCreateResultObject(resultString, false);
71 } 80 }
72 81
73 82
74 // 21.1.3.27 String.prototype [ @@iterator ]( ) 83 // 21.1.3.27 String.prototype [ @@iterator ]( )
75 function StringPrototypeIterator() { 84 function StringPrototypeIterator() {
76 return CreateStringIterator(this); 85 return CreateStringIterator(this);
77 } 86 }
78 87
79 //------------------------------------------------------------------- 88 //-------------------------------------------------------------------
80 89
81 %FunctionSetPrototype(StringIterator, {__proto__: $iteratorPrototype}); 90 %FunctionSetPrototype(StringIterator, {__proto__: $iteratorPrototype});
82 %FunctionSetInstanceClassName(StringIterator, 'String Iterator'); 91 %FunctionSetInstanceClassName(StringIterator, 'String Iterator');
83 92
84 $installFunctions(StringIterator.prototype, DONT_ENUM, [ 93 utils.InstallFunctions(StringIterator.prototype, DONT_ENUM, [
85 'next', StringIteratorNext 94 'next', StringIteratorNext
86 ]); 95 ]);
87 %AddNamedProperty(StringIterator.prototype, symbolToStringTag, 96 %AddNamedProperty(StringIterator.prototype, symbolToStringTag,
88 "String Iterator", READ_ONLY | DONT_ENUM); 97 "String Iterator", READ_ONLY | DONT_ENUM);
89 98
90 $setFunctionName(StringPrototypeIterator, symbolIterator); 99 utils.SetFunctionName(StringPrototypeIterator, symbolIterator);
91 %AddNamedProperty(GlobalString.prototype, symbolIterator, 100 %AddNamedProperty(GlobalString.prototype, symbolIterator,
92 StringPrototypeIterator, DONT_ENUM); 101 StringPrototypeIterator, DONT_ENUM);
93 102
94 }) 103 })
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