/*******************************************************************************
*
* Copyright (C) 2008 Fujitsu Services Ltd.
*
* Author: Nick Battle
*
* This file is part of VDMJ.
*
* VDMJ is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* VDMJ is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with VDMJ. If not, see <http://www.gnu.org/licenses/>.
*
******************************************************************************/
package org.overture.interpreter.values;
import java.util.Set;
import org.overture.ast.analysis.AnalysisException;
import org.overture.ast.intf.lex.ILexLocation;
import org.overture.ast.types.PType;
import org.overture.interpreter.runtime.Context;
public class IterFunctionValue extends FunctionValue
{
private static final long serialVersionUID = 1L;
public final FunctionValue function;
public final long iterations;
public IterFunctionValue(FunctionValue function, long iterations)
{
super(function.location, function.type, "**");
this.function = function;
this.iterations = iterations;
}
@Override
public String toString()
{
return function.toString() + " ** " + iterations;
}
@Override
public Value eval(ILexLocation from, ValueList argValues, Context ctxt)
throws AnalysisException
{
Value result = function.eval(from, argValues, ctxt);
for (int i = 1; i < iterations; i++)
{
result = function.eval(from, result, ctxt);
}
return result;
}
@Override
public boolean equals(Object other)
{
if (other instanceof Value)
{
Value val = ((Value) other).deref();
if (val instanceof IterFunctionValue)
{
IterFunctionValue ov = (IterFunctionValue) val;
return ov.function.equals(function)
&& ov.iterations == iterations;
}
}
return false;
}
@Override
protected Value convertValueTo(PType to, Context ctxt, Set<PType> done) throws AnalysisException
{
FunctionValue converted = (FunctionValue)function.convertValueTo(to, ctxt, done);
return new IterFunctionValue(converted, iterations);
}
@Override
public int hashCode()
{
return function.hashCode() + (int) iterations;
}
@Override
public String kind()
{
return "**";
}
}