Package org.aspectj.ajdt.internal.core.builder

Source Code of org.aspectj.ajdt.internal.core.builder.EclipseSourceContext$UnusedDeclaredThrownExceptionFilter

/* *******************************************************************
* 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.core.builder;

import java.io.File;

import org.aspectj.ajdt.internal.compiler.lookup.EclipseSourceLocation;
import org.aspectj.bridge.ISourceLocation;
import org.aspectj.bridge.SourceLocation;
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.CompilationResult.ProblemsForRemovalFilter;
import org.aspectj.weaver.IEclipseSourceContext;
import org.aspectj.weaver.IHasPosition;
import org.aspectj.weaver.Member;



public class EclipseSourceContext implements IEclipseSourceContext {
 
  CompilationResult result;
  int offset = 0;

  public EclipseSourceContext(CompilationResult result) {
    this.result = result;
  }
 
  public EclipseSourceContext(CompilationResult result, int offset) {
    this.result = result;
    this.offset = offset;
  }
 
  public int getOffset() {
    return offset;
  }
 
  private File getSourceFile() {
    return new File(new String(result.fileName));
  }

  public ISourceLocation makeSourceLocation(IHasPosition position) {
    return new EclipseSourceLocation(result, position.getStart(), position.getEnd());
  }

    public ISourceLocation makeSourceLocation(int line, int offset) {
    SourceLocation sl = new SourceLocation(getSourceFile(), line);

        if (offset > 0) {
            sl.setOffset(offset);
        } else {
            // compute the offset
            //TODO AV - should we do it lazily?
            int[] offsets = result.lineSeparatorPositions;
            int likelyOffset = 0;
            if (line > 0 && line < offsets.length) {
                //1st char of given line is next char after previous end of line
                likelyOffset = offsets[line-1];//FIXME may be need -2
            }
            sl.setOffset(likelyOffset);
        }
        return sl;
  }
   
    public void tidy() {
        result=null;
    }

  public void removeUnnecessaryProblems(Member member, int problemLineNumber) {
    if (result == null) return;
    IProblem[] probs = result.getProblems();
    if (probs!=null) {
      for (int i = 0; i < probs.length; i++) {
        IProblem problem = probs[i];
        if (problem == null) continue;
        if (problem.getID() == IProblem.UnusedMethodDeclaredThrownException
            || problem.getID() == IProblem.UnusedConstructorDeclaredThrownException) {
          if (problem.getSourceLineNumber() == problemLineNumber) {
            UnusedDeclaredThrownExceptionFilter filter =
              new UnusedDeclaredThrownExceptionFilter(problem);
            result.removeProblems(filter)
          }
        }
      }
    }
  }

  private class UnusedDeclaredThrownExceptionFilter implements ProblemsForRemovalFilter
    private IProblem problemToRemove;

    public UnusedDeclaredThrownExceptionFilter(IProblem p) {
      problemToRemove = p;
    }

    public boolean accept(IProblem p) {
      if (p.equals(problemToRemove)) {
        return true;
      }
      return false;
    }

  }
}
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