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Issue 1398733002: Move builtin JavaScript sources into own directory. (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: Also move macros.py file. Created 5 years, 2 months ago
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1 // Copyright 2013 the V8 project authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 (function(global, utils) {
6
7 "use strict";
8
9 %CheckIsBootstrapping();
10
11 // -------------------------------------------------------------------
12 // Imports
13
14 var GlobalArrayBuffer = global.ArrayBuffer;
15 var GlobalObject = global.Object;
16 var MathMax;
17 var MathMin;
18 var toStringTagSymbol = utils.ImportNow("to_string_tag_symbol");
19
20 utils.Import(function(from) {
21 MathMax = from.MathMax;
22 MathMin = from.MathMin;
23 });
24
25 // -------------------------------------------------------------------
26
27 function ArrayBufferConstructor(length) { // length = 1
28 if (%_IsConstructCall()) {
29 var byteLength = $toPositiveInteger(length, kInvalidArrayBufferLength);
30 %ArrayBufferInitialize(this, byteLength, kNotShared);
31 } else {
32 throw MakeTypeError(kConstructorNotFunction, "ArrayBuffer");
33 }
34 }
35
36 function ArrayBufferGetByteLen() {
37 if (!IS_ARRAYBUFFER(this)) {
38 throw MakeTypeError(kIncompatibleMethodReceiver,
39 'ArrayBuffer.prototype.byteLength', this);
40 }
41 return %_ArrayBufferGetByteLength(this);
42 }
43
44 // ES6 Draft 15.13.5.5.3
45 function ArrayBufferSlice(start, end) {
46 if (!IS_ARRAYBUFFER(this)) {
47 throw MakeTypeError(kIncompatibleMethodReceiver,
48 'ArrayBuffer.prototype.slice', this);
49 }
50
51 var relativeStart = TO_INTEGER(start);
52 if (!IS_UNDEFINED(end)) {
53 end = TO_INTEGER(end);
54 }
55 var first;
56 var byte_length = %_ArrayBufferGetByteLength(this);
57 if (relativeStart < 0) {
58 first = MathMax(byte_length + relativeStart, 0);
59 } else {
60 first = MathMin(relativeStart, byte_length);
61 }
62 var relativeEnd = IS_UNDEFINED(end) ? byte_length : end;
63 var fin;
64 if (relativeEnd < 0) {
65 fin = MathMax(byte_length + relativeEnd, 0);
66 } else {
67 fin = MathMin(relativeEnd, byte_length);
68 }
69
70 if (fin < first) {
71 fin = first;
72 }
73 var newLen = fin - first;
74 // TODO(dslomov): implement inheritance
75 var result = new GlobalArrayBuffer(newLen);
76
77 %ArrayBufferSliceImpl(this, result, first);
78 return result;
79 }
80
81 function ArrayBufferIsViewJS(obj) {
82 return %ArrayBufferIsView(obj);
83 }
84
85
86 // Set up the ArrayBuffer constructor function.
87 %SetCode(GlobalArrayBuffer, ArrayBufferConstructor);
88 %FunctionSetPrototype(GlobalArrayBuffer, new GlobalObject());
89
90 // Set up the constructor property on the ArrayBuffer prototype object.
91 %AddNamedProperty(
92 GlobalArrayBuffer.prototype, "constructor", GlobalArrayBuffer, DONT_ENUM);
93
94 %AddNamedProperty(GlobalArrayBuffer.prototype,
95 toStringTagSymbol, "ArrayBuffer", DONT_ENUM | READ_ONLY);
96
97 utils.InstallGetter(GlobalArrayBuffer.prototype, "byteLength",
98 ArrayBufferGetByteLen);
99
100 utils.InstallFunctions(GlobalArrayBuffer, DONT_ENUM, [
101 "isView", ArrayBufferIsViewJS
102 ]);
103
104 utils.InstallFunctions(GlobalArrayBuffer.prototype, DONT_ENUM, [
105 "slice", ArrayBufferSlice
106 ]);
107
108 })
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