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
146
147
148
149
150
151
152
153
154
155
156
157
158
|
/*******************************************************************************
* Copyright (c) 2012, 2016 Wind River Systems, Inc. and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Markus Schorn - initial API and implementation
* Sergey Prigogin (Google)
*******************************************************************************/
package org.eclipse.cdt.internal.core.dom.parser.cpp.semantics;
import static org.eclipse.cdt.core.dom.ast.IASTExpression.ValueCategory.PRVALUE;
import org.eclipse.cdt.core.dom.ast.IASTBinaryTypeIdExpression.Operator;
import org.eclipse.cdt.core.dom.ast.IASTExpression.ValueCategory;
import org.eclipse.cdt.core.dom.ast.IASTNode;
import org.eclipse.cdt.core.dom.ast.IBinding;
import org.eclipse.cdt.core.dom.ast.IType;
import org.eclipse.cdt.core.dom.ast.IValue;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPTemplateParameterMap;
import org.eclipse.cdt.internal.core.dom.parser.DependentValue;
import org.eclipse.cdt.internal.core.dom.parser.ITypeMarshalBuffer;
import org.eclipse.cdt.internal.core.dom.parser.ProblemType;
import org.eclipse.cdt.internal.core.dom.parser.ValueFactory;
import org.eclipse.cdt.internal.core.dom.parser.cpp.CPPBasicType;
import org.eclipse.cdt.internal.core.dom.parser.cpp.ICPPEvaluation;
import org.eclipse.cdt.internal.core.dom.parser.cpp.InstantiationContext;
import org.eclipse.core.runtime.CoreException;
/**
* Evaluation for a binary type-id expression.
*/
public class EvalBinaryTypeId extends CPPDependentEvaluation {
private final Operator fOperator;
private final IType fType1, fType2;
private boolean fCheckedValueDependent;
private boolean fIsValueDependent;
public EvalBinaryTypeId(Operator kind, IType type1, IType type2, IASTNode pointOfDefinition) {
this(kind, type1, type2, findEnclosingTemplate(pointOfDefinition));
}
public EvalBinaryTypeId(Operator kind, IType type1, IType type2, IBinding templateDefinition) {
super(templateDefinition);
fOperator= kind;
fType1= type1;
fType2= type2;
}
public Operator getOperator() {
return fOperator;
}
public IType getType1() {
return fType1;
}
public IType getType2() {
return fType2;
}
@Override
public boolean isInitializerList() {
return false;
}
@Override
public boolean isFunctionSet() {
return false;
}
@Override
public IType getType() {
switch (fOperator) {
case __is_base_of:
case __is_trivially_assignable:
return CPPBasicType.BOOLEAN;
}
return ProblemType.UNKNOWN_FOR_EXPRESSION;
}
@Override
public IValue getValue() {
if (isValueDependent())
return DependentValue.create(this);
return ValueFactory.evaluateBinaryTypeIdExpression(fOperator, fType1, fType2);
}
@Override
public boolean isTypeDependent() {
return false;
}
@Override
public boolean isValueDependent() {
if (!fCheckedValueDependent) {
fIsValueDependent= CPPTemplates.isDependentType(fType1) || CPPTemplates.isDependentType(fType2);
fCheckedValueDependent= true;
}
return fIsValueDependent;
}
@Override
public boolean isConstantExpression() {
return true;
}
@Override
public ValueCategory getValueCategory() {
return PRVALUE;
}
@Override
public void marshal(ITypeMarshalBuffer buffer, boolean includeValue) throws CoreException {
buffer.putShort(ITypeMarshalBuffer.EVAL_BINARY_TYPE_ID);
buffer.putByte((byte) fOperator.ordinal());
buffer.marshalType(fType1);
buffer.marshalType(fType2);
marshalTemplateDefinition(buffer);
}
public static ICPPEvaluation unmarshal(short firstBytes, ITypeMarshalBuffer buffer) throws CoreException {
int op= buffer.getByte();
IType arg1= buffer.unmarshalType();
IType arg2= buffer.unmarshalType();
IBinding templateDefinition= buffer.unmarshalBinding();
return new EvalBinaryTypeId(Operator.values()[op], arg1, arg2, templateDefinition);
}
@Override
public ICPPEvaluation instantiate(InstantiationContext context, int maxDepth) {
IType type1 = CPPTemplates.instantiateType(fType1, context);
IType type2 = CPPTemplates.instantiateType(fType2, context);
if (type1 == fType1 && type2 == fType2)
return this;
return new EvalBinaryTypeId(fOperator, type1, type2, getTemplateDefinition());
}
@Override
public ICPPEvaluation computeForFunctionCall(ActivationRecord record, ConstexprEvaluationContext context) {
return this;
}
@Override
public int determinePackSize(ICPPTemplateParameterMap tpMap) {
return CPPTemplates.combinePackSize(CPPTemplates.determinePackSize(fType1, tpMap),
CPPTemplates.determinePackSize(fType2, tpMap));
}
@Override
public boolean referencesTemplateParameter() {
return isValueDependent();
}
}
|
