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/*******************************************************************************
* Copyright (c) 2008, 2011 Symbian Software Systems 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:
* Andrew Ferguson (Symbian) - Initial Implementation
* Markus Schorn (Wind River Systems)
* IBM Corporation
*******************************************************************************/
package org.eclipse.cdt.internal.core.dom.parser.cpp;
import java.util.ArrayList;
import java.util.List;
import org.eclipse.cdt.core.dom.ast.ASTVisitor;
import org.eclipse.cdt.core.dom.ast.IASTDeclSpecifier;
import org.eclipse.cdt.core.dom.ast.IASTExpression;
import org.eclipse.cdt.core.dom.ast.IASTIdExpression;
import org.eclipse.cdt.core.dom.ast.IASTName;
import org.eclipse.cdt.core.dom.ast.IASTNamedTypeSpecifier;
import org.eclipse.cdt.core.dom.ast.IASTNode;
import org.eclipse.cdt.core.dom.ast.IASTTypeId;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPASTAmbiguousTemplateArgument;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPASTPackExpansionExpression;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPASTTemplateId;
import org.eclipse.cdt.internal.core.dom.parser.ASTAmbiguousNode;
import org.eclipse.core.runtime.Assert;
/**
* Ambiguity node for deciding between type-id and id-expression in a template argument.
*/
public class CPPASTAmbiguousTemplateArgument extends ASTAmbiguousNode implements ICPPASTAmbiguousTemplateArgument {
private List<IASTNode> fNodes;
/**
* @param nodes nodes of type {@link IASTTypeId}, {@link IASTIdExpression}
* or {@link ICPPASTPackExpansionExpression}.
*/
public CPPASTAmbiguousTemplateArgument(IASTNode... nodes) {
fNodes= new ArrayList<IASTNode>(2);
for (IASTNode node : nodes) {
if (node instanceof IASTTypeId || node instanceof IASTIdExpression) {
fNodes.add(node);
} else if (node instanceof ICPPASTPackExpansionExpression) {
final IASTExpression pattern = ((ICPPASTPackExpansionExpression) node).getPattern();
if (pattern instanceof IASTIdExpression) {
fNodes.add(node);
} else {
Assert.isLegal(false, pattern == null ? "null" : pattern.getClass().getName()); //$NON-NLS-1$
}
} else {
Assert.isLegal(false, node == null ? "null" : node.getClass().getName()); //$NON-NLS-1$
}
}
}
@Override
protected void beforeAlternative(IASTNode node) {
// The name may be shared between the alternatives make sure it's parent is set correctly
if (node instanceof IASTTypeId) {
IASTDeclSpecifier declSpec = ((IASTTypeId) node).getDeclSpecifier();
if (declSpec instanceof IASTNamedTypeSpecifier) {
IASTNamedTypeSpecifier namedTypeSpec= (IASTNamedTypeSpecifier) declSpec;
final IASTName name = namedTypeSpec.getName();
name.setBinding(null);
namedTypeSpec.setName(name);
}
} else if (node instanceof IASTIdExpression) {
IASTIdExpression id= (IASTIdExpression) node;
final IASTName name = id.getName();
name.setBinding(null);
id.setName(name);
}
}
@Override
protected void afterResolution(ASTVisitor resolver, IASTNode best) {
beforeAlternative(best);
}
@Override
public IASTNode copy() {
return copy(CopyStyle.withoutLocations);
}
@Override
public IASTNode copy(CopyStyle style) {
int sizeOfNodes = fNodes.size();
IASTNode[] copyNodes = new IASTNode[sizeOfNodes];
int arrayIndex = 0;
for (IASTNode node : fNodes) {
if (node != null) {
copyNodes[arrayIndex]= node.copy(style);
} else {
copyNodes[arrayIndex]= null;
}
arrayIndex++;
}
ICPPASTAmbiguousTemplateArgument ambiguityNode = new CPPASTAmbiguousTemplateArgument(copyNodes);
return ambiguityNode;
}
@Override
public IASTNode[] getNodes() {
return fNodes.toArray(new IASTNode[fNodes.size()]);
}
@Override
public void addTypeId(IASTTypeId typeId) {
assertNotFrozen();
addNode(typeId);
}
@Override
public void addIdExpression(IASTIdExpression idExpression) {
assertNotFrozen();
addNode(idExpression);
}
@Override
public void addIdExpression(IASTExpression idExpression) {
assertNotFrozen();
addNode(idExpression);
}
private void addNode(IASTNode node) {
fNodes.add(node);
node.setParent(this);
node.setPropertyInParent(ICPPASTTemplateId.TEMPLATE_ID_ARGUMENT);
}
}
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