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/*******************************************************************************
* Copyright (c) 2005, 2012 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 Rational Software) - Initial API and implementation
* Yuan Zhang / Beth Tibbitts (IBM Research)
* Bryan Wilkinson (QNX)
* Anton Leherbauer (Wind River Systems)
*******************************************************************************/
package org.eclipse.cdt.internal.core.dom.parser.c;
import org.eclipse.cdt.core.dom.ast.ASTVisitor;
import org.eclipse.cdt.core.dom.ast.IASTCompletionContext;
import org.eclipse.cdt.core.dom.ast.IASTIdExpression;
import org.eclipse.cdt.core.dom.ast.IASTName;
import org.eclipse.cdt.core.dom.ast.IBinding;
import org.eclipse.cdt.core.dom.ast.ICompositeType;
import org.eclipse.cdt.core.dom.ast.IEnumeration;
import org.eclipse.cdt.core.dom.ast.IEnumerator;
import org.eclipse.cdt.core.dom.ast.IFunction;
import org.eclipse.cdt.core.dom.ast.IProblemBinding;
import org.eclipse.cdt.core.dom.ast.ISemanticProblem;
import org.eclipse.cdt.core.dom.ast.IType;
import org.eclipse.cdt.core.dom.ast.IVariable;
import org.eclipse.cdt.core.parser.util.ArrayUtil;
import org.eclipse.cdt.internal.core.dom.parser.ASTNode;
import org.eclipse.cdt.internal.core.dom.parser.ProblemType;
/**
* ID Expression in C.
*/
public class CASTIdExpression extends ASTNode implements IASTIdExpression, IASTCompletionContext {
private IASTName name;
public CASTIdExpression() {
}
public CASTIdExpression(IASTName name) {
setName(name);
}
@Override
public CASTIdExpression copy() {
return copy(CopyStyle.withoutLocations);
}
@Override
public CASTIdExpression copy(CopyStyle style) {
CASTIdExpression copy = new CASTIdExpression(name == null ? null : name.copy(style));
return copy(copy, style);
}
@Override
public IASTName getName() {
return name;
}
@Override
public void setName(IASTName name) {
assertNotFrozen();
this.name = name;
if (name != null) {
name.setParent(this);
name.setPropertyInParent(ID_NAME);
}
}
@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 (name != null && !name.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 int getRoleForName(IASTName n) {
if (n == name) return r_reference;
return r_unclear;
}
@Override
public IType getExpressionType() {
IBinding binding = getName().resolveBinding();
if (binding instanceof IVariable) {
return ((IVariable) binding).getType();
}
if (binding instanceof IFunction) {
return ((IFunction) binding).getType();
}
if (binding instanceof IEnumerator) {
return ((IEnumerator) binding).getType();
}
if (binding instanceof IProblemBinding) {
return new ProblemType(ISemanticProblem.TYPE_UNRESOLVED_NAME);
}
return new ProblemType(ISemanticProblem.TYPE_UNKNOWN_FOR_EXPRESSION);
}
@Override
public boolean isLValue() {
return true;
}
@Override
public final ValueCategory getValueCategory() {
return ValueCategory.LVALUE;
}
@Override
public IBinding[] findBindings(IASTName n, boolean isPrefix) {
IBinding[] bindings = CVisitor.findBindingsForContentAssist(n, isPrefix);
for (int i = 0; i < bindings.length; i++) {
if (bindings[i] instanceof IEnumeration || bindings[i] instanceof ICompositeType) {
bindings[i]= null;
}
}
return ArrayUtil.removeNulls(IBinding.class, bindings);
}
}
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