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/*******************************************************************************
* Copyright (c) 2008, 2015 Wind River Systems, Inc. and others.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* Markus Schorn - initial API and implementation
* Sergey Prigogin (Google)
*******************************************************************************/
package org.eclipse.cdt.internal.core.dom.parser.cpp;
import static org.eclipse.cdt.core.dom.ast.IASTExpression.ValueCategory.PRVALUE;
import org.eclipse.cdt.core.dom.ast.IType;
import org.eclipse.cdt.core.dom.ast.IValue;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPParameterPackType;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPTemplateArgument;
import org.eclipse.cdt.internal.core.dom.parser.IntegralValue;
import org.eclipse.cdt.internal.core.dom.parser.cpp.semantics.EvalFixed;
import org.eclipse.cdt.internal.core.dom.parser.cpp.semantics.EvalPackExpansion;
import org.eclipse.cdt.internal.core.dom.parser.cpp.semantics.EvalTypeId;
import org.eclipse.core.runtime.Assert;
/**
* Implementation of non-type template argument, used by AST and index.
*/
public final class CPPTemplateNonTypeArgument implements ICPPTemplateArgument {
private final ICPPEvaluation fEvaluation;
public CPPTemplateNonTypeArgument(ICPPEvaluation evaluation) {
Assert.isNotNull(evaluation);
if (evaluation instanceof EvalFixed || evaluation.isTypeDependent() || evaluation.isValueDependent()) {
fEvaluation = evaluation;
} else {
IValue value = evaluation.getValue();
if (value == IntegralValue.ERROR) {
fEvaluation = EvalFixed.INCOMPLETE;
} else {
fEvaluation = new EvalFixed(evaluation.getType(), evaluation.getValueCategory(), value);
}
}
}
public CPPTemplateNonTypeArgument(IValue value, IType type) {
fEvaluation = new EvalFixed(type, PRVALUE, value);
}
@Override
public boolean isTypeValue() {
return false;
}
@Override
public IType getOriginalTypeValue() {
return null;
}
@Override
public boolean isNonTypeValue() {
return true;
}
@Override
public IType getTypeValue() {
return null;
}
@Override
public ICPPEvaluation getNonTypeEvaluation() {
return fEvaluation;
}
@Override
public IValue getNonTypeValue() {
return fEvaluation.getValue();
}
@Override
public IType getTypeOfNonTypeValue() {
return fEvaluation.getType();
}
@Override
public boolean isPackExpansion() {
return fEvaluation.getType() instanceof ICPPParameterPackType;
}
@Override
public ICPPTemplateArgument getExpansionPattern() {
IType type = fEvaluation.getType();
if (type instanceof ICPPParameterPackType) {
IType t = ((ICPPParameterPackType) type).getType();
if (t != null) {
ICPPEvaluation evaluation;
if (fEvaluation instanceof EvalPackExpansion) {
evaluation = ((EvalPackExpansion) fEvaluation).getExpansionPattern();
} else {
evaluation = new EvalTypeId(t, fEvaluation.getTemplateDefinition(), false, false, fEvaluation);
}
return new CPPTemplateNonTypeArgument(evaluation);
}
}
return null;
}
@Override
public boolean isSameValue(ICPPTemplateArgument arg) {
return getNonTypeValue().equals(arg.getNonTypeValue());
}
@Override
public String toString() {
return getNonTypeValue().toString();
}
}
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