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/*******************************************************************************
* Copyright (c) 2010-2015, Zoltan Ujhelyi, Marton Bur, Istvan Rath and Daniel Varro
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v. 2.0 which is available at
* http://www.eclipse.org/legal/epl-v20.html.
*
* SPDX-License-Identifier: EPL-2.0
*******************************************************************************/
package tools.refinery.viatra.runtime.matchers.psystem.rewriters;
import tools.refinery.viatra.runtime.matchers.psystem.PVariable;
import tools.refinery.viatra.runtime.matchers.psystem.queries.PQuery;
/**
* Helper interface to ease the naming of the new variables during flattening
*
* @author Marton Bur
*
*/
public interface IVariableRenamer {
/**
* Creates a variable name based on a given variable and a given query. It only creates a String, doesn't set
* anything.
*
* @param pVariable
* @param query
* @return the new variable name as a String
*/
String createVariableName(PVariable pVariable, PQuery query);
public class SameName implements IVariableRenamer {
@Override
public String createVariableName(PVariable pVariable, PQuery query) {
return pVariable.getName();
}
}
public class HierarchicalName implements IVariableRenamer {
private int callCount;
public void setCallCount(int callCount) {
this.callCount = callCount;
}
@Override
public String createVariableName(PVariable pVariable, PQuery query) {
// make sure to keep the "_" prefix before anonymous variables
String newVarName = getShortName(query) + "<" + callCount + ">" + "_" + pVariable.getName();
return pVariable.getName().startsWith("_") ? "_" + newVarName : newVarName ;
}
private String getShortName(PQuery query) {
String fullyQualifiedName = query.getFullyQualifiedName();
int beginIndex = fullyQualifiedName.lastIndexOf('.') + 1;
return fullyQualifiedName.substring(beginIndex);
}
}
}
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