/* *******************************************************************
* 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 v1.0
* which accompanies this distribution and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* PARC initial implementation
* ******************************************************************/
package org.aspectj.weaver;
import java.io.File;
import java.util.Arrays;
import org.aspectj.bridge.ISourceLocation;
import org.aspectj.bridge.SourceLocation;
public class SourceContextImpl implements ISourceContext {
private int[] lineBreaks;
String sourceFilename;
public SourceContextImpl(AbstractReferenceTypeDelegate delegate) {
sourceFilename = delegate.getSourcefilename();
}
public void configureFromAttribute(String name, int[] linebreaks) {
this.sourceFilename = name;
this.lineBreaks = linebreaks;
}
public void setSourceFileName(String name) {
sourceFilename = name;
}
private File getSourceFile() {
return new File(sourceFilename);
}
public void tidy() {
}
public int getOffset() {
return 0;
}
public ISourceLocation makeSourceLocation(IHasPosition position) {
if (lineBreaks != null) {
int line = Arrays.binarySearch(lineBreaks, position.getStart());
if (line < 0) {
line = -line;
}
return new SourceLocation(getSourceFile(), line); // ??? have more info
} else {
return new SourceLocation(getSourceFile(), 0);
}
}
public ISourceLocation makeSourceLocation(int line, int offset) {
if (line < 0) {
line = 0;
}
SourceLocation sl = new SourceLocation(getSourceFile(), line);
if (offset > 0) {
sl.setOffset(offset);
} else {
if (lineBreaks != null) {
int likelyOffset = 0;
if (line > 0 && line < lineBreaks.length) {
// 1st char of given line is next char after previous end of line
likelyOffset = lineBreaks[line - 1] + 1;
}
sl.setOffset(likelyOffset);
}
}
return sl;
}
public final static ISourceContext UNKNOWN_SOURCE_CONTEXT = new ISourceContext() {
public ISourceLocation makeSourceLocation(IHasPosition position) {
return null;
}
public ISourceLocation makeSourceLocation(int line, int offset) {
return null;
}
public int getOffset() {
return 0;
}
public void tidy() {
}
};
}