1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
|
// Copyright 2013 the V8 project authors. All rights reserved.
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following
// disclaimer in the documentation and/or other materials provided
// with the distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
'use strict';
// This file relies on the fact that the following declaration has been made
// in runtime.js:
// var $Array = global.Array;
// -------------------------------------------------------------------
// ES6 draft 07-15-13, section 15.4.3.23
function ArrayFind(predicate /* thisArg */) { // length == 1
if (IS_NULL_OR_UNDEFINED(this) && !IS_UNDETECTABLE(this)) {
throw MakeTypeError("called_on_null_or_undefined",
["Array.prototype.find"]);
}
var array = ToObject(this);
var length = ToInteger(array.length);
if (!IS_SPEC_FUNCTION(predicate)) {
throw MakeTypeError('called_non_callable', [predicate]);
}
var thisArg;
if (%_ArgumentsLength() > 1) {
thisArg = %_Arguments(1);
}
if (IS_NULL_OR_UNDEFINED(thisArg)) {
thisArg = %GetDefaultReceiver(predicate) || thisArg;
} else if (!IS_SPEC_OBJECT(thisArg) && %IsClassicModeFunction(predicate)) {
thisArg = ToObject(thisArg);
}
for (var i = 0; i < length; i++) {
if (i in array) {
var element = array[i];
if (%_CallFunction(thisArg, element, i, array, predicate)) {
return element;
}
}
}
return;
}
// ES6 draft 07-15-13, section 15.4.3.24
function ArrayFindIndex(predicate /* thisArg */) { // length == 1
if (IS_NULL_OR_UNDEFINED(this) && !IS_UNDETECTABLE(this)) {
throw MakeTypeError("called_on_null_or_undefined",
["Array.prototype.findIndex"]);
}
var array = ToObject(this);
var length = ToInteger(array.length);
if (!IS_SPEC_FUNCTION(predicate)) {
throw MakeTypeError('called_non_callable', [predicate]);
}
var thisArg;
if (%_ArgumentsLength() > 1) {
thisArg = %_Arguments(1);
}
if (IS_NULL_OR_UNDEFINED(thisArg)) {
thisArg = %GetDefaultReceiver(predicate) || thisArg;
} else if (!IS_SPEC_OBJECT(thisArg) && %IsClassicModeFunction(predicate)) {
thisArg = ToObject(thisArg);
}
for (var i = 0; i < length; i++) {
if (i in array) {
var element = array[i];
if (%_CallFunction(thisArg, element, i, array, predicate)) {
return i;
}
}
}
return -1;
}
// -------------------------------------------------------------------
function HarmonyArrayExtendArrayPrototype() {
%CheckIsBootstrapping();
// Set up the non-enumerable functions on the Array prototype object.
InstallFunctions($Array.prototype, DONT_ENUM, $Array(
"find", ArrayFind,
"findIndex", ArrayFindIndex
));
}
HarmonyArrayExtendArrayPrototype();
|
