org.eclipse.viatra2.gtasm.patternmatcher.impl/src/org/eclipse/viatra2/gtasm/patternmatcher/impl/patternmatcher/term/TermCheckExecutionEnvironment.java

/*******************************************************************************
 * Copyright (c) 2004-2008 Akos Horvath, Gergely Varro and Daniel Varro
 * 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:
 *    Akos Horvath, Gergely Varro - initial API and implementation
 *******************************************************************************/

package org.eclipse.viatra2.gtasm.patternmatcher.impl.patternmatcher.term;

import java.util.HashMap;
import java.util.Map;
import java.util.Vector;


import org.eclipse.emf.common.util.EList;
import org.eclipse.viatra2.framework.IFramework;
import org.eclipse.viatra2.gtasm.interpreter.exception.ViatraTransformationException;
import org.eclipse.viatra2.gtasm.interpreter.executionEnvironment.IExecutionEnvironment;
import org.eclipse.viatra2.gtasm.patternmatcher.impl.patternmatcher.internal.MatchingFrame;
import org.eclipse.viatra2.gtasm.patternmatcher.impl.patternmatcher.internal.VariableID;
import org.eclipse.viatra2.gtasmmodel.gtasm.metamodel.asm.definitions.ASMFunction;
import org.eclipse.viatra2.gtasmmodel.gtasm.metamodel.asm.definitions.Variable;
import org.eclipse.viatra2.gtasmmodel.gtasm.metamodel.asm.terms.Term;
import org.eclipse.viatra2.gtasmmodel.gtasm.metamodel.gt.GTPattern;

public class TermCheckExecutionEnvironment implements IExecutionEnvironment {
	private IExecutionEnvironment parent;
    private GTPattern pattern;
    private int uid;
    private MatchingFrame frame;
    
    public TermCheckExecutionEnvironment(IExecutionEnvironment parent, GTPattern pattern, int uid, MatchingFrame frame) {
        this.parent = parent;
        this.pattern = pattern;
        this.uid = uid;
        this.frame = frame;
    }
    
    public Object getVariableValue(Variable variable) {
        Integer index = frame.getPattern().getIndex(new VariableID(pattern,uid,variable.getName()));
        return frame.getValue(index);
    }

	public void addVariable(Variable key, Object value) throws ViatraTransformationException {
		// Do nothing
	}

	public void fetchVariableVariations(HashMap<Variable, Vector<Object>> possibleVariableValues, Term termToBeEvaluated) {
		parent.fetchVariableVariations(possibleVariableValues, termToBeEvaluated);
	}

	public IFramework getFramework() {
		return parent.getFramework();
	}

	public Object getValueOfASMFunction(ASMFunction asmFunction, EList location) {
		return parent.getValueOfASMFunction(asmFunction, location);
	}

	public Map<Variable, Object> getVariableValues() {
		return parent.getVariableValues();
	}

	public void setVariableValue(Variable variable, Object value) throws ViatraTransformationException {
		// Do nothing
	}

	public void updateASMFunction(ASMFunction asmFunction, EList location, Object value) throws ViatraTransformationException {
		parent.updateASMFunction(asmFunction, location, value);
	}
}