/*
 * Copyright (c) 2012, 2014, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code 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
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */
package com.oracle.truffle.sl.nodes.expression;

import com.oracle.truffle.api.*;
import com.oracle.truffle.api.frame.*;
import com.oracle.truffle.api.nodes.*;
import com.oracle.truffle.api.source.*;
import com.oracle.truffle.sl.nodes.*;
import com.oracle.truffle.sl.runtime.*;

/**
 * Constant literal for a {@link SLFunction function} value, created when a function name occurs as
 * a literal in SL source code. Note that function redefinition can change the {@link CallTarget
 * call target} that is executed when calling the function, but the {@link SLFunction} for a name
 * never changes. This is guaranteed by the {@link SLFunctionRegistry}.
 */
@NodeInfo(shortName = "func")
public final class SLFunctionLiteralNode extends SLExpressionNode {

    private final SLFunction value;

    public SLFunctionLiteralNode(SourceSection src, SLFunction value) {
        super(src);
        this.value = value;
    }

    @Override
    public SLFunction executeFunction(VirtualFrame frame) {
        return value;
    }

    @Override
    public Object executeGeneric(VirtualFrame frame) {
        return value;
    }
}
