/*
 * Copyright (c) 2016, Oracle and/or its affiliates.
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 * Redistribution and use in source and binary forms, with or without modification, are
 * permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice, this list of
 * conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright notice, this list of
 * conditions and the following disclaimer in the documentation and/or other materials provided
 * with the distribution.
 *
 * 3. Neither the name of the copyright holder nor the names of its contributors may be used to
 * endorse or promote products derived from this software without specific prior written
 * permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS
 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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package com.oracle.truffle.llvm.nodes.base;

import com.oracle.truffle.api.RootCallTarget;
import com.oracle.truffle.api.Truffle;
import com.oracle.truffle.api.frame.FrameDescriptor;
import com.oracle.truffle.api.frame.VirtualFrame;
import com.oracle.truffle.api.nodes.DirectCallNode;
import com.oracle.truffle.api.nodes.RootNode;
import com.oracle.truffle.llvm.runtime.LLVMIVarBit;
import com.oracle.truffle.llvm.runtime.LLVMLanguage;

public abstract class LLVMMainFunctionReturnValueRootNode extends RootNode {

    @Child protected DirectCallNode callNode;

    protected LLVMMainFunctionReturnValueRootNode(LLVMLanguage language, RootCallTarget rootCallTarget) {
        super(language, new FrameDescriptor());
        this.callNode = Truffle.getRuntime().createDirectCallNode(rootCallTarget);
    }

    public static class LLVMMainFunctionReturnI1RootNode extends LLVMMainFunctionReturnValueRootNode {

        public LLVMMainFunctionReturnI1RootNode(LLVMLanguage language, RootCallTarget rootCallTarget) {
            super(language, rootCallTarget);
        }

        @Override
        public Object execute(VirtualFrame frame) {
            return ((Boolean) callNode.call(new Object[]{})).booleanValue() ? 1 : 0;
        }

    }

    public static class LLVMMainFunctionReturnIVarBitRootNode extends LLVMMainFunctionReturnValueRootNode {

        public LLVMMainFunctionReturnIVarBitRootNode(LLVMLanguage language, RootCallTarget rootCallTarget) {
            super(language, rootCallTarget);
        }

        @Override
        public Object execute(VirtualFrame frame) {
            return ((LLVMIVarBit) callNode.call(new Object[]{})).getIntValue();
        }

    }

    public static class LLVMMainFunctionReturnNumberRootNode extends LLVMMainFunctionReturnValueRootNode {

        public LLVMMainFunctionReturnNumberRootNode(LLVMLanguage language, RootCallTarget rootCallTarget) {
            super(language, rootCallTarget);
        }

        @Override
        public Object execute(VirtualFrame frame) {
            return ((Number) callNode.call(new Object[]{})).intValue();
        }

    }

    public static class LLVMMainFunctionReturnVoidRootNode extends LLVMMainFunctionReturnValueRootNode {

        private static final int VOID_RET_VALUE = 0;

        public LLVMMainFunctionReturnVoidRootNode(LLVMLanguage language, RootCallTarget rootCallTarget) {
            super(language, rootCallTarget);
        }

        @Override
        public Object execute(VirtualFrame frame) {
            callNode.call(new Object[]{});
            return VOID_RET_VALUE;
        }

    }

}