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/* *******************************************************************
* Copyright (c) 2002 Palo Alto Research Center, Incorporated (PARC).
* All rights reserved.
* This program and the accompanying materials are made available
* under the terms of the Eclipse Public License v 2.0
* which accompanies this distribution and is available at
* https://www.eclipse.org/org/documents/epl-2.0/EPL-2.0.txt
*
* Contributors:
* PARC initial implementation
* ******************************************************************/
package org.aspectj.weaver.patterns;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import org.aspectj.bridge.ISourceLocation;
import org.aspectj.weaver.CompressingDataOutputStream;
import org.aspectj.weaver.IHasSourceLocation;
import org.aspectj.weaver.ISourceContext;
public abstract class PatternNode implements IHasSourceLocation {
protected int start, end;
protected ISourceContext sourceContext;
public PatternNode() {
super();
start = end = -1;
}
public int getStart() {
return start + (sourceContext != null ? sourceContext.getOffset() : 0);
}
public int getEnd() {
return end + (sourceContext != null ? sourceContext.getOffset() : 0);
}
public ISourceContext getSourceContext() {
return sourceContext;
}
public String getFileName() {
return "unknown";
}
public void setLocation(ISourceContext sourceContext, int start, int end) {
this.sourceContext = sourceContext;
this.start = start;
this.end = end;
}
public void copyLocationFrom(PatternNode other) {
this.start = other.start;
this.end = other.end;
this.sourceContext = other.sourceContext;
}
public ISourceLocation getSourceLocation() {
// System.out.println("get context: " + this + " is " + sourceContext);
if (sourceContext == null) {
// System.err.println("no context: " + this);
return null;
}
return sourceContext.makeSourceLocation(this);
}
public abstract void write(CompressingDataOutputStream s) throws IOException;
public void writeLocation(DataOutputStream s) throws IOException {
s.writeInt(start);
s.writeInt(end);
}
public void readLocation(ISourceContext context, DataInputStream s) throws IOException {
start = s.readInt();
end = s.readInt();
this.sourceContext = context;
}
public abstract Object accept(PatternNodeVisitor visitor, Object data);
public Object traverse(PatternNodeVisitor visitor, Object data) {
return accept(visitor, data);
}
}
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