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/*******************************************************************************
* Copyright (c) 2004, 2011 IBM Corporation 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:
* John Camelon (IBM) - Initial API and implementation
* Markus Schorn (Wind River Systems)
*******************************************************************************/
package org.eclipse.cdt.internal.core.dom.parser.cpp;
import static org.eclipse.cdt.core.dom.ast.IASTExpression.ValueCategory.PRVALUE;
import java.util.ArrayList;
import java.util.List;
import org.eclipse.cdt.core.dom.ast.ASTVisitor;
import org.eclipse.cdt.core.dom.ast.IASTExpression;
import org.eclipse.cdt.core.dom.ast.IASTImplicitName;
import org.eclipse.cdt.core.dom.ast.IASTNode;
import org.eclipse.cdt.core.dom.ast.IType;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPASTDeleteExpression;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPFunction;
import org.eclipse.cdt.internal.core.dom.parser.ASTNode;
import org.eclipse.cdt.internal.core.dom.parser.IASTAmbiguityParent;
import org.eclipse.cdt.internal.core.dom.parser.Value;
import org.eclipse.cdt.internal.core.dom.parser.cpp.semantics.CPPSemantics;
import org.eclipse.cdt.internal.core.dom.parser.cpp.semantics.EvalFixed;
public class CPPASTDeleteExpression extends ASTNode implements ICPPASTDeleteExpression, IASTAmbiguityParent {
private static final ICPPEvaluation EVALUATION = new EvalFixed(CPPSemantics.VOID_TYPE, PRVALUE, Value.UNKNOWN);
private IASTExpression operand;
private boolean isGlobal;
private boolean isVectored;
private IASTImplicitName[] implicitNames;
public CPPASTDeleteExpression() {
}
public CPPASTDeleteExpression(IASTExpression operand) {
setOperand(operand);
}
public CPPASTDeleteExpression(CPPASTDeleteExpression from) {
setOperand(from.operand);
}
@Override
public CPPASTDeleteExpression copy() {
return copy(CopyStyle.withoutLocations);
}
@Override
public CPPASTDeleteExpression copy(CopyStyle style) {
CPPASTDeleteExpression copy =
new CPPASTDeleteExpression(operand == null ? null : operand.copy(style));
copy.isGlobal = isGlobal;
copy.isVectored = isVectored;
return copy(copy, style);
}
@Override
public IASTExpression getOperand() {
return operand;
}
@Override
public void setOperand(IASTExpression expression) {
assertNotFrozen();
operand = expression;
if (expression != null) {
expression.setParent(this);
expression.setPropertyInParent(OPERAND);
}
}
@Override
public void setIsGlobal(boolean global) {
assertNotFrozen();
isGlobal = global;
}
@Override
public boolean isGlobal() {
return isGlobal;
}
@Override
public void setIsVectored(boolean vectored) {
assertNotFrozen();
isVectored = vectored;
}
@Override
public boolean isVectored() {
return isVectored;
}
/**
* Try to resolve both the destructor and operator delete.
*/
@Override
public IASTImplicitName[] getImplicitNames() {
if (implicitNames == null) {
List<IASTImplicitName> names = new ArrayList<IASTImplicitName>();
if (!isVectored) {
ICPPFunction destructor = CPPSemantics.findImplicitlyCalledDestructor(this);
if (destructor != null) {
CPPASTImplicitName destructorName = new CPPASTImplicitName(destructor.getNameCharArray(), this);
destructorName.setBinding(destructor);
destructorName.computeOperatorOffsets(operand, false);
names.add(destructorName);
}
}
if (!isGlobal) {
ICPPFunction deleteOperator = CPPSemantics.findOverloadedOperator(this);
if (deleteOperator != null && !(deleteOperator instanceof CPPImplicitFunction)) {
CPPASTImplicitName deleteName = new CPPASTImplicitName(deleteOperator.getNameCharArray(), this);
deleteName.setOperator(true);
deleteName.setBinding(deleteOperator);
deleteName.computeOperatorOffsets(operand, false);
names.add(deleteName);
}
}
if (names.isEmpty()) {
implicitNames = IASTImplicitName.EMPTY_NAME_ARRAY;
} else {
implicitNames = names.toArray(new IASTImplicitName[names.size()]);
}
}
return implicitNames;
}
@Override
public boolean accept(ASTVisitor action) {
if (action.shouldVisitExpressions) {
switch (action.visit(this)) {
case ASTVisitor.PROCESS_ABORT: return false;
case ASTVisitor.PROCESS_SKIP: return true;
default: break;
}
}
if (action.shouldVisitImplicitNames) {
for (IASTImplicitName name : getImplicitNames()) {
if (!name.accept(action))
return false;
}
}
if (operand != null && !operand.accept(action))
return false;
if (action.shouldVisitExpressions) {
switch (action.leave(this)) {
case ASTVisitor.PROCESS_ABORT: return false;
case ASTVisitor.PROCESS_SKIP: return true;
default: break;
}
}
return true;
}
@Override
public ICPPEvaluation getEvaluation() {
return EVALUATION;
}
@Override
public IType getExpressionType() {
return CPPSemantics.VOID_TYPE;
}
@Override
public boolean isLValue() {
return false;
}
@Override
public ValueCategory getValueCategory() {
return PRVALUE;
}
@Override
public void replace(IASTNode child, IASTNode other) {
if (child == operand) {
other.setPropertyInParent(child.getPropertyInParent());
other.setParent(child.getParent());
operand = (IASTExpression) other;
}
}
}
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