Copyright (c) 2006 Contributors. 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://eclipse.org/legal/epl-v10.html 
 
Contributors: IBM Corporation - initial API and implementation 
				 Helen Hawkins   - initial version
/********************************************************************
 * Copyright (c) 2006 Contributors. 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://eclipse.org/legal/epl-v10.html 
 *  
 * Contributors: IBM Corporation - initial API and implementation 
 * 				 Helen Hawkins   - initial version
 *******************************************************************/
package org.aspectj.asm.internal;

import org.aspectj.asm.IProgramElement;

Uses "typesafe enum" pattern.
/**
 * Uses "typesafe enum" pattern.
 */
public class HandleProviderDelimiter {

	// taken from JavaElement
	public static final HandleProviderDelimiter JAVAPROJECT = new HandleProviderDelimiter('=');
	public static final HandleProviderDelimiter PACKAGEFRAGMENT = new HandleProviderDelimiter('<');
	public static final HandleProviderDelimiter FIELD = new HandleProviderDelimiter('^');
	public static final HandleProviderDelimiter METHOD = new HandleProviderDelimiter('~');
	public static final HandleProviderDelimiter INITIALIZER = new HandleProviderDelimiter('|');
	public static final HandleProviderDelimiter COMPILATIONUNIT = new HandleProviderDelimiter('{');
	public static final HandleProviderDelimiter CLASSFILE = new HandleProviderDelimiter('(');
	public static final HandleProviderDelimiter TYPE = new HandleProviderDelimiter('[');
	public static final HandleProviderDelimiter IMPORTDECLARATION = new HandleProviderDelimiter('#');
	public static final HandleProviderDelimiter COUNT = new HandleProviderDelimiter('!');
	public static final HandleProviderDelimiter ESCAPE = new HandleProviderDelimiter('\\');
	public static final HandleProviderDelimiter PACKAGEDECLARATION = new HandleProviderDelimiter('%');
	public static final HandleProviderDelimiter PACKAGEFRAGMENTROOT = new HandleProviderDelimiter('/');
	// these below are not currently used because no iprogramelement.kind
	// equivalent
	public static final HandleProviderDelimiter LOCALVARIABLE = new HandleProviderDelimiter('@');
	public static final HandleProviderDelimiter TYPE_PARAMETER = new HandleProviderDelimiter(']');

	// AspectJ specific ones
	public static final HandleProviderDelimiter ASPECT_CU = new HandleProviderDelimiter('*');
	public static final HandleProviderDelimiter ADVICE = new HandleProviderDelimiter('&');
	public static final HandleProviderDelimiter ASPECT_TYPE = new HandleProviderDelimiter('\'');
	public static final HandleProviderDelimiter CODEELEMENT = new HandleProviderDelimiter('?');
	public static final HandleProviderDelimiter ITD_FIELD = new HandleProviderDelimiter(',');
	public static final HandleProviderDelimiter ITD = new HandleProviderDelimiter(')');
	public static final HandleProviderDelimiter DECLARE = new HandleProviderDelimiter('`');
	public static final HandleProviderDelimiter POINTCUT = new HandleProviderDelimiter('"');

	public static final HandleProviderDelimiter PHANTOM = new HandleProviderDelimiter(';');

	private static char empty = ' ';
	private final char delim;

	private HandleProviderDelimiter(char delim) {
		this.delim = delim;
	}

	
Returns the delimiter for the HandleProviderDelimiter, for example ASPECT returns '*' and METHOD returns '~'
/**
	 * Returns the delimiter for the HandleProviderDelimiter, for example ASPECT returns '*' and METHOD returns '~'
	 */
	public char getDelimiter() {
		return delim;
	}

	
Returns the delimiter for the given IProgramElement for example if the IProgramElement is an aspect returns '*' and if the
IProgramElement is a method returns '~'
/**
	 * Returns the delimiter for the given IProgramElement for example if the IProgramElement is an aspect returns '*' and if the
	 * IProgramElement is a method returns '~'
	 */
	public static char getDelimiter(IProgramElement ipe) {
		IProgramElement.Kind kind = ipe.getKind();
		if (kind.equals(IProgramElement.Kind.PROJECT)) {
			return JAVAPROJECT.getDelimiter();
		} else if (kind.equals(IProgramElement.Kind.PACKAGE)) {
			return PACKAGEFRAGMENT.getDelimiter();
		} else if (kind.equals(IProgramElement.Kind.FILE_JAVA)) {
			if (ipe.getName().endsWith(".aj")) {
				return ASPECT_CU.getDelimiter();
			} else {
				return COMPILATIONUNIT.getDelimiter();
			}
		} else if (kind.equals(IProgramElement.Kind.FILE_ASPECTJ)) {
			return ASPECT_CU.getDelimiter();
		} else if (kind.equals(IProgramElement.Kind.IMPORT_REFERENCE)) {
			return IMPORTDECLARATION.getDelimiter();
		} else if (kind.equals(IProgramElement.Kind.PACKAGE_DECLARATION)) {
			return PACKAGEDECLARATION.getDelimiter();
		} else if (kind.equals(IProgramElement.Kind.CLASS) || kind.equals(IProgramElement.Kind.INTERFACE)
				|| kind.equals(IProgramElement.Kind.ENUM) || kind.equals(IProgramElement.Kind.ANNOTATION)) {
			return TYPE.getDelimiter();
		} else if (kind.equals(IProgramElement.Kind.ASPECT)) {
			if (ipe.isAnnotationStyleDeclaration()) {
				return TYPE.getDelimiter();
			} else {
				return ASPECT_TYPE.getDelimiter();
			}
		} else if (kind.equals(IProgramElement.Kind.INITIALIZER)) {
			return INITIALIZER.getDelimiter();
		} else if (kind.equals(IProgramElement.Kind.INTER_TYPE_FIELD)) {
			return ITD_FIELD.getDelimiter();
		} else if (kind.equals(IProgramElement.Kind.INTER_TYPE_METHOD) || kind.equals(IProgramElement.Kind.INTER_TYPE_CONSTRUCTOR)
				|| kind.equals(IProgramElement.Kind.INTER_TYPE_PARENT)) {
			return ITD.getDelimiter();
		} else if (kind.equals(IProgramElement.Kind.CONSTRUCTOR) || kind.equals(IProgramElement.Kind.METHOD)) {
			return METHOD.getDelimiter();
		} else if (kind.equals(IProgramElement.Kind.FIELD) || kind.equals(IProgramElement.Kind.ENUM_VALUE)) {
			return FIELD.getDelimiter();
		} else if (kind.equals(IProgramElement.Kind.POINTCUT)) {
			if (ipe.isAnnotationStyleDeclaration()) {
				return METHOD.getDelimiter();
			} else {
				return POINTCUT.getDelimiter();
			}
		} else if (kind.equals(IProgramElement.Kind.ADVICE)) {
			if (ipe.isAnnotationStyleDeclaration()) {
				return METHOD.getDelimiter();
			} else {
				return ADVICE.getDelimiter();
			}
		} else if (kind.equals(IProgramElement.Kind.DECLARE_PARENTS) || kind.equals(IProgramElement.Kind.DECLARE_WARNING)
				|| kind.equals(IProgramElement.Kind.DECLARE_ERROR) || kind.equals(IProgramElement.Kind.DECLARE_SOFT)
				|| kind.equals(IProgramElement.Kind.DECLARE_PRECEDENCE)
				|| kind.equals(IProgramElement.Kind.DECLARE_ANNOTATION_AT_CONSTRUCTOR)
				|| kind.equals(IProgramElement.Kind.DECLARE_ANNOTATION_AT_FIELD)
				|| kind.equals(IProgramElement.Kind.DECLARE_ANNOTATION_AT_METHOD)
				|| kind.equals(IProgramElement.Kind.DECLARE_ANNOTATION_AT_TYPE)) {
			return DECLARE.getDelimiter();
		} else if (kind.equals(IProgramElement.Kind.CODE)) {
			return CODEELEMENT.getDelimiter();
		} else if (kind == IProgramElement.Kind.FILE) {
			if (ipe.getName().endsWith(".class")) {
				return CLASSFILE.getDelimiter();
			} else if (ipe.getName().endsWith(".aj")) {
				return ASPECT_CU.getDelimiter();
			} else if (ipe.getName().endsWith(".java")) {
				return COMPILATIONUNIT.getDelimiter();
			} else {
				return empty;
			}
		}
		return empty;
	}

}