ProblemReferenceBinding.java

/*******************************************************************************
 * Copyright (c) 2000, 2008 IBM Corporation 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:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.jdt.internal.compiler.lookup;

import java.lang.reflect.Field;

import org.eclipse.jdt.core.compiler.CharOperation;

public class ProblemReferenceBinding extends ReferenceBinding {
	ReferenceBinding closestMatch;

	private int problemReason;

// NOTE: must only answer the subset of the name related to the problem

	public ProblemReferenceBinding(char[][] compoundName, ReferenceBinding closestMatch, int problemReason) {
		this.compoundName= compoundName;
		this.closestMatch= closestMatch;
		this.problemReason= problemReason;
	}

	/**
	 * @see org.eclipse.jdt.internal.compiler.lookup.TypeBinding#closestMatch()
	 */
	public TypeBinding closestMatch() {
		return this.closestMatch;
	}

	/**
	 * @see org.eclipse.jdt.internal.compiler.lookup.TypeBinding#closestMatch()
	 */
	public ReferenceBinding closestReferenceMatch() {
		return this.closestMatch;
	}

/* API
* Answer the problem id associated with the receiver.
* NoError if the receiver is a valid binding.
*/
	public int problemId() {
		return this.problemReason;
	}

	public static String problemReasonString(int problemReason) {
		try {
			Class reasons= ProblemReasons.class;
			String simpleName= reasons.getName();
			int lastDot= simpleName.lastIndexOf('.');
			if (lastDot >= 0) {
				simpleName= simpleName.substring(lastDot + 1);
			}
			Field[] fields= reasons.getFields();
			for (int i= 0, length= fields.length; i < length; i++) {
				Field field= fields[i];
				if (!field.getType().equals(int.class))
					continue;
				if (field.getInt(reasons) == problemReason) {
					return simpleName + '.' + field.getName();
				}
			}
		} catch (IllegalAccessException e) {
			// do nothing
		}
		return "unknown"; //$NON-NLS-1$
	}

	/**
	 * @see org.eclipse.jdt.internal.compiler.lookup.ReferenceBinding#shortReadableName()
	 */
	public char[] shortReadableName() {
		return readableName();
	}

	public String toString() {
		StringBuffer buffer= new StringBuffer(10);
		buffer.append("ProblemType:[compoundName="); //$NON-NLS-1$
		buffer.append(this.compoundName == null ? "<null>" : new String(CharOperation.concatWith(this.compoundName, '.'))); //$NON-NLS-1$
		buffer.append("][problemID=").append(problemReasonString(this.problemReason)); //$NON-NLS-1$
		buffer.append("][closestMatch="); //$NON-NLS-1$
		buffer.append(this.closestMatch == null ? "<null>" : this.closestMatch.toString()); //$NON-NLS-1$
		buffer.append("]"); //$NON-NLS-1$
		return buffer.toString();
	}
}