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
159
160
161
162
163
164
165
166
167
168
169
170
171
172
|
/*******************************************************************************
* Copyright (c) 2017 Nathan Ridge.
* 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
*******************************************************************************/
package org.eclipse.cdt.internal.core.dom.parser.cpp.semantics;
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.ICPPASTNaryTypeIdExpression.Operator;
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 n-ary type-id expression.
*/
public class EvalNaryTypeId extends CPPDependentEvaluation {
private final Operator fOperator;
private final IType[] fOperands;
private boolean fCheckedValueDependent;
private boolean fIsValueDependent;
public EvalNaryTypeId(Operator operator, IType[] operands, IASTNode pointOfDefinition) {
this(operator, operands, findEnclosingTemplate(pointOfDefinition));
}
public EvalNaryTypeId(Operator operator, IType[] operands, IBinding templateDefinition) {
super(templateDefinition);
fOperator = operator;
fOperands = operands;
}
public Operator getOperator() {
return fOperator;
}
public IType[] getOperands() {
return fOperands;
}
@Override
public boolean isInitializerList() {
return false;
}
@Override
public boolean isFunctionSet() {
return false;
}
@Override
public boolean isTypeDependent() {
return false;
}
@Override
public boolean isValueDependent() {
if (!fCheckedValueDependent) {
for (IType operand : fOperands) {
if (CPPTemplates.isDependentType(operand)) {
fIsValueDependent = true;
}
}
fCheckedValueDependent = true;
}
return fIsValueDependent;
}
@Override
public boolean isConstantExpression() {
return true;
}
@Override
public boolean isEquivalentTo(ICPPEvaluation other) {
if (!(other instanceof EvalNaryTypeId)) {
return false;
}
EvalNaryTypeId o = (EvalNaryTypeId) other;
return fOperator == o.fOperator
&& areEquivalentTypes(fOperands, o.fOperands);
}
@Override
public IType getType() {
switch (fOperator) {
case __is_trivially_constructible:
case __is_constructible:
return CPPBasicType.BOOLEAN;
}
return ProblemType.UNKNOWN_FOR_EXPRESSION;
}
@Override
public IValue getValue() {
if (isValueDependent()) {
return DependentValue.create(this);
}
return ValueFactory.evaluateNaryTypeIdExpression(fOperator, fOperands, getTemplateDefinition());
}
@Override
public ValueCategory getValueCategory() {
return ValueCategory.PRVALUE;
}
@Override
public ICPPEvaluation instantiate(InstantiationContext context, int maxDepth) {
IType[] operands = CPPTemplates.instantiateTypes(fOperands, context);
if (operands == fOperands) {
return this;
}
return new EvalNaryTypeId(fOperator, operands, getTemplateDefinition());
}
@Override
public ICPPEvaluation computeForFunctionCall(ActivationRecord record,
ConstexprEvaluationContext context) {
return this;
}
@Override
public int determinePackSize(ICPPTemplateParameterMap tpMap) {
int result = 0;
for (int i = 0; i < fOperands.length; i++) {
result = CPPTemplates.combinePackSize(result,
CPPTemplates.determinePackSize(fOperands[i], tpMap));
}
return result;
}
@Override
public boolean referencesTemplateParameter() {
return isValueDependent();
}
@Override
public void marshal(ITypeMarshalBuffer buffer, boolean includeValue) throws CoreException {
buffer.putShort(ITypeMarshalBuffer.EVAL_NARY_TYPE_ID);
buffer.putByte((byte) fOperator.ordinal());
buffer.putInt(fOperands.length);
for (IType operand : fOperands) {
buffer.marshalType(operand);
}
marshalTemplateDefinition(buffer);
}
public static ICPPEvaluation unmarshal(short firstBytes, ITypeMarshalBuffer buffer) throws CoreException {
int op = buffer.getByte();
int len = buffer.getInt();
IType[] operands = new IType[len];
for (int i = 0; i < len; i++) {
operands[i] = buffer.unmarshalType();
}
IBinding templateDefinition = buffer.unmarshalBinding();
return new EvalNaryTypeId(Operator.values()[op], operands, templateDefinition);
}
}
|
