/*******************************************************************************
* Copyright (c) 2006-2012
* Software Technology Group, Dresden University of Technology
* DevBoost GmbH, Berlin, Amtsgericht Charlottenburg, HRB 140026
*
* 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:
* Software Technology Group - TU Dresden, Germany;
* DevBoost GmbH - Berlin, Germany
* - initial API and implementation
******************************************************************************/
package org.reuseware.coconut.reuseextensionactivator.resource.rexactivator.analysis;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.EStructuralFeature;
import org.reuseware.coconut.reuseextensionactivator.resource.rexactivator.IRex_activatorTokenResolveResult;
import org.reuseware.coconut.reuseextensionactivator.resource.rexactivator.IRex_activatorTokenResolver;
import org.reuseware.coconut.reuseextensionactivator.resource.rexactivator.mopp.Rex_activatorMetaInformation;
/**
* The default TEXT token resolver extended with an escape mechanism that uses the
* escape character "_".
*/
public class Rex_activatorTEXTTokenResolver implements IRex_activatorTokenResolver {
protected static final Rex_activatorMetaInformation META_INFORMATION =
new Rex_activatorMetaInformation();
protected static final String ESCAPE_SYMBOL =
"_";
/**
* Removes leading "_".
*
* @param lexem the text of the parsed token
* @param feature the corresponding feature in the meta model
* @param result the result of resolving the lexem, can be used to add processing errors
*/
public void resolve(String lexem, EStructuralFeature feature, IRex_activatorTokenResolveResult result) {
if (lexem.startsWith(ESCAPE_SYMBOL)) {
lexem = lexem.substring(ESCAPE_SYMBOL.length());
}
result.setResolvedToken(lexem);
}
/**
* Prepends "_" if value equals a keyword of the rex_activator language.
*
* @param value the Object to be printed as String
* @param feature the corresponding feature (EAttribute)
* @param container the container of the object
*
* @return the String representation or null if a problem occurred
*/
public String deResolve(Object value, EStructuralFeature feature, EObject container) {
if (value == null) {
return "undefined";
}
String stringValue = (String) value;
if (stringValue.startsWith(ESCAPE_SYMBOL)) {
stringValue = ESCAPE_SYMBOL + stringValue;
} else {
for (String token : META_INFORMATION.getTokenNames()) {
if (token.equals("'" + stringValue + "'")) {
stringValue = ESCAPE_SYMBOL + stringValue;
}
}
}
return stringValue;
}
/**
* @param options not supported
*/
public void setOptions(java.util.Map<?, ?> options) { }
}