/*
 * Copyright (c) 2006, 2008 Borland Software Corporation
 * 
 * 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:
 *    Artem Tikhomirov (Borland) - initial API and implementation
 */
package org.eclipse.gmf.internal.xpand.util;

import java.util.Collection;

public class ParserException extends Exception {
	private static final long serialVersionUID = 1L;

	private final ErrorLocationInfo[] errors;
	private final String qualifiedResourceName;

	private static String getMessage(String qualifiedName, ErrorLocationInfo[] errors) {
		assert errors != null && errors.length > 0;
		StringBuilder result = new StringBuilder("Following parser errors was reported while parsing " + qualifiedName + " resource:\n");
		for (ErrorLocationInfo errorLocationInfo : errors) {
			result.append("\t");
			result.append(errorLocationInfo.toString());
			result.append("\n");
		}
		return result.toString();
	}
	
	public ParserException(String qualifiedName, Collection<? extends ErrorLocationInfo> errors) {
		this(qualifiedName, errors.toArray(new ErrorLocationInfo[errors.size()]));
	}

	public ParserException(String qualifiedName, ErrorLocationInfo... errors) {
		super(getMessage(qualifiedName, errors));
		assert errors != null && errors.length > 0;
		this.errors = errors;
		this.qualifiedResourceName = qualifiedName;
	}

	public ErrorLocationInfo[] getParsingErrors() {
		return errors;
	}
	
	public String getResourceName() {
		return qualifiedResourceName;
	}

	public static class ErrorLocationInfo {
		public final int startLine;
		public final int startColumn;
		public final int endLine;
		public final int endColumn;
		public final String message;

		public ErrorLocationInfo(String message) {
			this(message, -1, -1, -1, -1);
		}

		public ErrorLocationInfo(String message, int startLine, int startColumn, int endLine, int endColumn) {
			this.message = message;
			this.startLine = startLine;
			this.startColumn = startColumn;
			this.endLine = endLine;
			this.endColumn = endColumn;
		}
		
		public String toString() {
			return startLine + ":" + startColumn + "-" + endLine + ":" + endColumn + " - " + message;
		}
	}
}