forked from oracle/graaljs
/
IteratorFunctionBuiltins.java
145 lines (125 loc) · 6.32 KB
/
IteratorFunctionBuiltins.java
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
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
/*
* Copyright (c) 2022, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* The Universal Permissive License (UPL), Version 1.0
*
* Subject to the condition set forth below, permission is hereby granted to any
* person obtaining a copy of this software, associated documentation and/or
* data (collectively the "Software"), free of charge and under any and all
* copyright rights in the Software, and any and all patent rights owned or
* freely licensable by each licensor hereunder covering either (i) the
* unmodified Software as contributed to or provided by such licensor, or (ii)
* the Larger Works (as defined below), to deal in both
*
* (a) the Software, and
*
* (b) any piece of software and/or hardware listed in the lrgrwrks.txt file if
* one is included with the Software each a "Larger Work" to which the Software
* is contributed by such licensors),
*
* without restriction, including without limitation the rights to copy, create
* derivative works of, display, perform, and distribute the Software and make,
* use, sell, offer for sale, import, export, have made, and have sold the
* Software and the Larger Work(s), and to sublicense the foregoing rights on
* either these or other terms.
*
* This license is subject to the following condition:
*
* The above copyright notice and either this complete permission notice or at a
* minimum a reference to the UPL must be included in all copies or substantial
* portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
package com.oracle.truffle.js.builtins;
import com.oracle.truffle.api.dsl.Specialization;
import com.oracle.truffle.api.profiles.BranchProfile;
import com.oracle.truffle.api.profiles.ConditionProfile;
import com.oracle.truffle.js.builtins.IteratorFunctionBuiltinsFactory.JSIteratorFromNodeGen;
import com.oracle.truffle.js.nodes.access.GetIteratorDirectNode;
import com.oracle.truffle.js.nodes.access.GetIteratorNode;
import com.oracle.truffle.js.nodes.access.GetMethodNode;
import com.oracle.truffle.js.nodes.binary.InstanceofNode.OrdinaryHasInstanceNode;
import com.oracle.truffle.js.nodes.function.JSBuiltin;
import com.oracle.truffle.js.nodes.function.JSBuiltinNode;
import com.oracle.truffle.js.nodes.unary.IsCallableNode;
import com.oracle.truffle.js.runtime.Errors;
import com.oracle.truffle.js.runtime.JSContext;
import com.oracle.truffle.js.runtime.Symbol;
import com.oracle.truffle.js.runtime.builtins.BuiltinEnum;
import com.oracle.truffle.js.runtime.builtins.JSIterator;
import com.oracle.truffle.js.runtime.builtins.JSWrapForIterator;
import com.oracle.truffle.js.runtime.objects.IteratorRecord;
import com.oracle.truffle.js.runtime.objects.JSDynamicObject;
import com.oracle.truffle.js.runtime.objects.Undefined;
/**
* Contains builtins for {@linkplain JSIterator} function (constructor).
*/
public final class IteratorFunctionBuiltins extends JSBuiltinsContainer.SwitchEnum<IteratorFunctionBuiltins.IteratorFunction> {
public static final JSBuiltinsContainer BUILTINS = new IteratorFunctionBuiltins();
IteratorFunctionBuiltins() {
super(JSIterator.CLASS_NAME, IteratorFunction.class);
}
public enum IteratorFunction implements BuiltinEnum<IteratorFunction> {
from(1);
private final int length;
IteratorFunction(int length) {
this.length = length;
}
@Override
public int getLength() {
return length;
}
}
@Override
protected Object createNode(JSContext context, JSBuiltin builtin, boolean construct, boolean newTarget, IteratorFunction builtinEnum) {
switch (builtinEnum) {
case from:
return JSIteratorFromNodeGen.create(context, builtin, args().fixedArgs(1).createArgumentNodes(context));
}
return null;
}
public abstract static class JSIteratorFromNode extends JSBuiltinNode {
@Child private GetMethodNode getIteratorMethodNode;
@Child private GetIteratorNode getIteratorNode;
@Child private GetIteratorDirectNode getIteratorDirectNode;
@Child private OrdinaryHasInstanceNode ordinaryHasInstanceNode;
@Child private IsCallableNode isCallableNode;
private final ConditionProfile usingIteratorProfile = ConditionProfile.createBinaryProfile();
private final BranchProfile errorProfile = BranchProfile.create();
public JSIteratorFromNode(JSContext context, JSBuiltin builtin) {
super(context, builtin);
this.getIteratorMethodNode = GetMethodNode.create(context, Symbol.SYMBOL_ITERATOR);
this.getIteratorNode = GetIteratorNode.create(getContext());
this.ordinaryHasInstanceNode = OrdinaryHasInstanceNode.create(getContext());
this.getIteratorDirectNode = GetIteratorDirectNode.create(getContext());
this.isCallableNode = IsCallableNode.create();
}
@Specialization
protected JSDynamicObject iteratorFrom(Object arg) {
IteratorRecord iteratorRecord;
Object usingIterator = getIteratorMethodNode.executeWithTarget(arg);
if (usingIteratorProfile.profile(usingIterator != Undefined.instance)) {
iteratorRecord = getIteratorNode.execute(arg);
if (!isCallableNode.executeBoolean(iteratorRecord.getNextMethod())) {
errorProfile.enter();
throw Errors.createTypeErrorCallableExpected();
}
boolean hasInstance = ordinaryHasInstanceNode.executeBoolean(iteratorRecord.getIterator(), getRealm().getIteratorConstructor());
if (hasInstance) {
return iteratorRecord.getIterator();
}
} else {
iteratorRecord = getIteratorDirectNode.execute(arg);
}
return JSWrapForIterator.create(getContext(), getRealm(), iteratorRecord);
}
}
}