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/*******************************************************************************
* Copyright (c) 2008 Institute for Software, HSR Hochschule fuer Technik
* Rapperswil, University of applied sciences 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:
* Institute for Software - initial API and implementation
*******************************************************************************/
package org.eclipse.cdt.internal.core.dom.rewrite.astwriter;
import org.eclipse.cdt.core.dom.ast.IASTMacroExpansionLocation;
import org.eclipse.cdt.core.dom.ast.IASTNode;
import org.eclipse.cdt.core.dom.ast.IASTNodeLocation;
import org.eclipse.cdt.core.dom.ast.IASTStatement;
/**
*
* Recognizes nodes that are the result of an macro expansion and replaces them
* with a suitable macro call.
* @author Emanuel Graf IFS
*
*/
public class MacroExpansionHandler {
private int lastMacroExpOffset;
private final Scribe scribe;
public MacroExpansionHandler(Scribe scribe) {
this.scribe = scribe;
}
protected boolean checkisMacroExpansionNode(IASTNode node) {
return checkisMacroExpansionNode(node, true);
}
protected boolean isStatementWithMixedLocation(IASTStatement node) {
if(node.getNodeLocations().length > 1) {
for (IASTNodeLocation loc : node.getNodeLocations()) {
if (loc instanceof IASTMacroExpansionLocation) {
return true;
}
}
}
return false;
}
protected boolean macroExpansionAlreadyPrinted(IASTNode node) {
IASTNodeLocation[] locs = node.getNodeLocations();
if(locs.length ==1) {
if (locs[0] instanceof IASTMacroExpansionLocation) {
IASTMacroExpansionLocation macroNode = (IASTMacroExpansionLocation) locs[0];
if (macroNode.asFileLocation().getNodeOffset() == lastMacroExpOffset) {
return true;
}
}
}
return false;
}
protected boolean checkisMacroExpansionNode(IASTNode node, boolean write) {
IASTNodeLocation[] locs = node.getNodeLocations();
if (locs != null && locs.length ==1) {
if (locs[0] instanceof IASTMacroExpansionLocation) {
IASTMacroExpansionLocation macroNode = (IASTMacroExpansionLocation) locs[0];
if (macroNode.asFileLocation().getNodeOffset() == lastMacroExpOffset) {
return true;
}
if (write) {
lastMacroExpOffset = macroNode.asFileLocation().getNodeOffset();
scribe.print(node.getRawSignature());
}
return true;
}
}
return false;
}
public void reset(){
lastMacroExpOffset = -1;
}
}
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