/* *******************************************************************
* 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.ajdt.internal.compiler.lookup;
import java.io.File;
import org.aspectj.ajdt.internal.core.builder.EclipseAdapterUtils;
import org.aspectj.bridge.ISourceLocation;
import org.aspectj.org.eclipse.jdt.core.compiler.IProblem;
import org.aspectj.org.eclipse.jdt.internal.compiler.CompilationResult;
import org.aspectj.org.eclipse.jdt.internal.compiler.env.ICompilationUnit;
import org.aspectj.org.eclipse.jdt.internal.compiler.util.Util;
public class EclipseSourceLocation implements ISourceLocation {
private static String NO_CONTEXT = "USE_NULL--NO_CONTEXT_AVAILABLE";
CompilationResult result;
// EclipseSourceContext eclipseContext;
int startPos, endPos;
String filename;
// lazy but final
File file;
int startLine = -1;
int endLine = -1;
int column = -1;
String context;
public EclipseSourceLocation(CompilationResult result, int startPos, int endPos) {
super();
this.result = result;
if (result!=null && result.fileName!=null) this.filename = new String(result.fileName);
this.startPos = startPos;
this.endPos = endPos;
}
public CompilationResult getCompilationResult() {
return result;
}
public int getOffset() {
return startPos;
}
public int getStartPos() {
return startPos;
}
public int getEndPos() {
return endPos;
}
public File getSourceFile() {
if (null == file) {
if (filename==null) {
// if ((null == result)
// || (null == result.fileName)
// || (0 == result.fileName.length)) {
file = ISourceLocation.NO_FILE;
} else {
file = new File(filename);//new String(result.fileName));
}
}
return file;
}
public int getLine() {
if (-1 == startLine && result!=null) {
startLine = Util.getLineNumber(startPos,result.lineSeparatorPositions,0,result.lineSeparatorPositions.length-1);
}
return startLine;
}
public int getColumn() {
if (-1 == column) {
int lineNumber = getLine();
// JJH added check that lineNumber is in legal range to avoid exceptions
if (0 < lineNumber && lineNumber < result.lineSeparatorPositions.length) {
int lineStart = result.lineSeparatorPositions[lineNumber];
int col = startPos - lineStart; // 1-based
if (0 <= col) {
column = col;
} else {
column = 0;
}
} else if (0 < lineNumber && lineNumber == result.lineSeparatorPositions.length) {
column = 0;
}
}
return column;
}
public int getEndLine() {
if (-1 == endLine) {
endLine = Util.getLineNumber(endPos,result.lineSeparatorPositions,0,result.lineSeparatorPositions.length-1);
}
return endLine;
}
public String getContext() {
if (null == context) {
ICompilationUnit compilationUnit = result.compilationUnit;
IProblem[] problems = result.problems;
if ((null == compilationUnit) || (null == problems)
|| (1 != problems.length)) { // ?? which of n>1 problems?
context = NO_CONTEXT;
} else {
context = EclipseAdapterUtils.makeLocationContext(compilationUnit, problems[0]);
}
}
return (NO_CONTEXT == context ? null : context);
}
/** @return String {file:}line{:column} */
public String toString() {
StringBuffer sb = new StringBuffer();
if (getSourceFile() != ISourceLocation.NO_FILE) {
sb.append(getSourceFile().getPath());
sb.append(":");
}
sb.append("" + getLine());
if (getColumn() != 0) {
sb.append(":" + getColumn());
}
if (getOffset()>=0) { sb.append("::").append(getOffset()); }
return sb.toString();
}
private volatile int hashCode = -1;
public int hashCode() {
if (hashCode == -1) {
int result = 17;
// other parts important?
result = 37*result + getLine();
result = 37*result + getOffset();
result = 37*result + (filename==null?0:filename.hashCode());
hashCode = result;
}
return hashCode;
}
public boolean equals(Object other) {
if (! (other instanceof EclipseSourceLocation)) return super.equals(other);
EclipseSourceLocation o = (EclipseSourceLocation) other;
return
getLine()==o.getLine() &&
getOffset()==o.getOffset() &&
((filename==null)?(o.filename==null):o.filename.equals(filename));
}
public String getSourceFileName() {
return null;
}
}