/*
 * Copyright (c) 2013, 2013, 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.call;

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

public final class SLCallNode extends SLExpressionNode {

    public static SLCallNode create(SLExpressionNode function, SLExpressionNode[] arguments) {
        return new SLCallNode(function, arguments, new SLUninitializedCallNode());
    }

    @Child protected SLExpressionNode functionNode;
    @Children protected final SLExpressionNode[] argumentNodes;
    @Child protected SLAbstractDispatchNode dispatchNode;

    private SLCallNode(SLExpressionNode functionNode, SLExpressionNode[] argumentNodes, SLAbstractDispatchNode dispatchNode) {
        this.functionNode = adoptChild(functionNode);
        this.argumentNodes = adoptChildren(argumentNodes);
        this.dispatchNode = adoptChild(dispatchNode);
    }

    @Override
    @ExplodeLoop
    public Object executeGeneric(VirtualFrame frame) {
        SLFunction function;
        try {
            function = functionNode.executeFunction(frame);
        } catch (UnexpectedResultException e) {
            throw new UnsupportedOperationException("Call to " + e.getMessage() + " not supported.");
        }

        Object[] argumentValues = new Object[argumentNodes.length];
        for (int i = 0; i < argumentNodes.length; i++) {
            argumentValues[i] = argumentNodes[i].executeGeneric(frame);
        }
        SLArguments arguments = new SLArguments(argumentValues);

        return dispatchNode.executeCall(frame, function, arguments);
    }
}