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/*
* Copyright (c) 2013 QNX 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 Eidsness - Initial implementation
*/
package org.eclipse.cdt.internal.core.dom.ast.tag;
import org.eclipse.cdt.core.dom.ast.IASTDeclarator;
import org.eclipse.cdt.core.dom.ast.IASTName;
import org.eclipse.cdt.core.dom.ast.IASTNode;
import org.eclipse.cdt.core.dom.ast.IBinding;
import org.eclipse.cdt.core.dom.ast.cpp.ICPPASTCompositeTypeSpecifier;
import org.eclipse.cdt.core.dom.ast.tag.ITag;
import org.eclipse.cdt.core.dom.ast.tag.ITagReader;
import org.eclipse.cdt.core.dom.ast.tag.ITagWriter;
import org.eclipse.cdt.core.dom.ast.tag.IWritableTag;
import org.eclipse.cdt.internal.core.dom.parser.cpp.ICPPInternalBinding;
public class NonCachedTaggable implements ITagReader, ITagWriter {
private final IBinding binding;
private IASTName ast;
public NonCachedTaggable(IBinding binding) {
this.binding = binding;
}
@Override
public IWritableTag createTag(String id, int len) {
return new Tag(id, len);
}
@Override
public ITag getTag(String id) {
return TagManager.getInstance().process(id, this, binding, getAST());
}
@Override
public Iterable<ITag> getTags() {
return TagManager.getInstance().process(this, binding, getAST());
}
@Override
public boolean setTags(Iterable<ITag> tags) {
// this non-caching implementation has nothing to set, the tags will be regenerated
// when they are queried
return true;
}
private IASTName getAST() {
if (ast != null)
return ast;
if (!(binding instanceof ICPPInternalBinding))
return null;
IASTNode node = getPhysicalNode((ICPPInternalBinding) binding);
if (node == null)
return null;
return ast = getName(node);
}
private static IASTNode getPhysicalNode(ICPPInternalBinding binding) {
IASTNode node = binding.getDefinition();
if (node != null)
return node;
IASTNode[] nodes = binding.getDeclarations();
if (nodes == null || nodes.length <= 0)
return null;
return nodes[0];
}
private static IASTName getName(IASTNode node) {
if (node instanceof IASTName)
return (IASTName) node;
if (node instanceof ICPPASTCompositeTypeSpecifier)
return ((ICPPASTCompositeTypeSpecifier) node).getName();
if (node instanceof IASTDeclarator)
return ((IASTDeclarator) node).getName();
return null;
}
}
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