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/*******************************************************************************
* Copyright (c) 2012 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.ICPPClassSpecialization;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPTemplateParameterMap;
import org.eclipse.cdt.internal.core.dom.parser.ISerializableEvaluation;
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.Value;
import org.eclipse.cdt.internal.core.dom.parser.cpp.CPPBasicType;
import org.eclipse.cdt.internal.core.dom.parser.cpp.ICPPEvaluation;
import org.eclipse.core.runtime.CoreException;
/**
* Performs evaluation of an 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 getTypeOrFunctionSet(IASTNode point) {
switch (fOperator) {
case __is_base_of:
return CPPBasicType.BOOLEAN;
}
return ProblemType.UNKNOWN_FOR_EXPRESSION;
}
@Override
public IValue getValue(IASTNode point) {
if (isValueDependent())
return Value.create(this);
return Value.evaluateBinaryTypeIdExpression(fOperator, fType1, fType2, point);
}
@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 ValueCategory getValueCategory(IASTNode point) {
return PRVALUE;
}
@Override
public void marshal(ITypeMarshalBuffer buffer, boolean includeValue) throws CoreException {
buffer.putByte(ITypeMarshalBuffer.EVAL_BINARY_TYPE_ID);
buffer.putByte((byte) fOperator.ordinal());
buffer.marshalType(fType1);
buffer.marshalType(fType2);
marshalTemplateDefinition(buffer);
}
public static ISerializableEvaluation unmarshal(int firstByte, 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(ICPPTemplateParameterMap tpMap, int packOffset,
ICPPClassSpecialization within, int maxdepth, IASTNode point) {
IType type1 = CPPTemplates.instantiateType(fType1, tpMap, packOffset, within, point);
IType type2 = CPPTemplates.instantiateType(fType2, tpMap, packOffset, within, point);
if (type1 == fType1 && type2 == fType2)
return this;
return new EvalBinaryTypeId(fOperator, type1, type2, getTemplateDefinition());
}
@Override
public ICPPEvaluation computeForFunctionCall(CPPFunctionParameterMap parameterMap,
int maxdepth, IASTNode point) {
return this;
}
@Override
public int determinePackSize(ICPPTemplateParameterMap tpMap) {
return CPPTemplates.combinePackSize(CPPTemplates.determinePackSize(fType1, tpMap),
CPPTemplates.determinePackSize(fType2, tpMap));
}
@Override
public boolean referencesTemplateParameter() {
return false;
}
}
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