CurryingExpression.java

/*
Copyright (c) 2008 Arno Haase.
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:
    Arno Haase - initial API and implementation
 */
package org.eclipse.xtend.backend.expr;

import java.util.List;

import org.eclipse.xtend.backend.common.ExecutionContext;
import org.eclipse.xtend.backend.common.ExpressionBase;
import org.eclipse.xtend.backend.common.Function;
import org.eclipse.xtend.backend.common.SourcePos;


/**
 * 
 * @author Arno Haase (http://www.haase-consulting.com)
 */
public final class CurryingExpression extends ExpressionBase{
    private final Function _function;
    private final List<ExpressionBase> _boundParams;

    /**
     * 
     * @param boundParams must have the same size as the number of parameters of the function. Unbound parameters
     *  are represented by "null" entries.
     */
    public CurryingExpression (Function f, List<ExpressionBase> boundParams, SourcePos pos) {
        super (pos);
        
        _function = f;
        _boundParams = boundParams;
    }

    public Function getFunction() {
		return _function;
	}

	public List<ExpressionBase> getBoundParams() {
		return _boundParams;
	}

	@Override
    protected Object evaluateInternal (ExecutionContext ctx) {
        return new CurriedFunction (_function, _boundParams, ctx);
    }
}