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/*******************************************************************************
* Copyright (c) 2004, 2010 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:
* Andrew Niefer (IBM Corporation) - initial API and implementation
* Markus Schorn (Wind River Systems)
* Bryan Wilkinson (QNX)
*******************************************************************************/
package org.eclipse.cdt.internal.core.dom.parser.cpp;
import java.util.ArrayList;
import java.util.List;
import org.eclipse.cdt.core.dom.IName;
import org.eclipse.cdt.core.dom.ast.EScopeKind;
import org.eclipse.cdt.core.dom.ast.IASTCompoundStatement;
import org.eclipse.cdt.core.dom.ast.IASTDeclarator;
import org.eclipse.cdt.core.dom.ast.IASTFunctionDeclarator;
import org.eclipse.cdt.core.dom.ast.IASTFunctionDefinition;
import org.eclipse.cdt.core.dom.ast.IASTName;
import org.eclipse.cdt.core.dom.ast.IASTNode;
import org.eclipse.cdt.core.dom.ast.IASTStatement;
import org.eclipse.cdt.core.dom.ast.IBinding;
import org.eclipse.cdt.core.dom.ast.ILabel;
import org.eclipse.cdt.core.dom.ast.IScope;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPFunctionScope;
import org.eclipse.cdt.core.parser.util.CharArrayObjectMap;
import org.eclipse.cdt.core.parser.util.CharArrayUtils;
import org.eclipse.cdt.internal.core.dom.parser.cpp.semantics.CPPVisitor;
/**
* Scope of a function, containing labels.
*/
public class CPPFunctionScope extends CPPScope implements ICPPFunctionScope {
private CharArrayObjectMap<ILabel> labels = CharArrayObjectMap.emptyMap();
/**
* @param physicalNode
*/
public CPPFunctionScope(IASTFunctionDeclarator physicalNode) {
super(physicalNode);
}
@Override
public EScopeKind getKind() {
return EScopeKind.eLocal;
}
@Override
public void addBinding(IBinding binding) {
//3.3.4 only labels have function scope
if (!(binding instanceof ILabel))
return;
if (labels == CharArrayObjectMap.EMPTY_MAP)
labels = new CharArrayObjectMap<ILabel>(2);
labels.put(binding.getNameCharArray(), (ILabel) binding);
}
@Override
public IBinding[] find(String name) {
char[] n = name.toCharArray();
List<IBinding> bindings = new ArrayList<IBinding>();
for (int i = 0; i < labels.size(); i++) {
char[] key = labels.keyAt(i);
if (CharArrayUtils.equals(key, n)) {
bindings.add(labels.get(key));
}
}
IBinding[] additional = super.find(name);
for (IBinding element : additional) {
bindings.add(element);
}
return bindings.toArray(new IBinding[bindings.size()]);
}
@Override
public IScope getParent() {
//we can't just resolve the function and get its parent scope, since there are cases where that
//could loop since resolving functions requires resolving their parameter types
IASTFunctionDeclarator fdtor = (IASTFunctionDeclarator) getPhysicalNode();
IASTName name = fdtor.getName().getLastName();
return CPPVisitor.getContainingNonTemplateScope(name);
}
@Override
public IScope getBodyScope() {
IASTFunctionDeclarator fnDtor = (IASTFunctionDeclarator) getPhysicalNode();
IASTNode parent = fnDtor.getParent();
if (parent instanceof IASTFunctionDefinition) {
IASTStatement body = ((IASTFunctionDefinition)parent).getBody();
if (body instanceof IASTCompoundStatement)
return ((IASTCompoundStatement)body).getScope();
}
return null;
}
@Override
public IName getScopeName() {
IASTNode node = getPhysicalNode();
if (node instanceof IASTDeclarator) {
return ((IASTDeclarator)node).getName();
}
return null;
}
}
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