/*
 * Copyright (c) 2018, 2019, Oracle and/or its affiliates.
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 * All rights reserved.
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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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 * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
 * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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 */
package com.oracle.truffle.llvm.runtime.nodes.api;

import com.oracle.truffle.api.dsl.Cached;
import com.oracle.truffle.api.dsl.GenerateUncached;
import com.oracle.truffle.api.dsl.Specialization;
import com.oracle.truffle.llvm.runtime.pointer.LLVMNativePointer;
import com.oracle.truffle.llvm.runtime.pointer.LLVMPointer;

@GenerateUncached
public abstract class LLVMToPointerNode extends LLVMNode {

    public abstract LLVMPointer executeWithTarget(Object obj);

    @Specialization
    protected LLVMPointer doPointer(LLVMPointer obj) {
        return obj;
    }

    @Specialization
    protected LLVMNativePointer doLong(long obj) {
        return LLVMNativePointer.create(obj);
    }

    @Specialization(replaces = {"doPointer", "doLong"})
    protected LLVMPointer doGeneric(Object obj,
                    @Cached LLVMToNativeNode toNative) {
        if (LLVMPointer.isInstance(obj)) {
            return LLVMPointer.cast(obj);
        } else {
            return toNative.executeWithTarget(obj);
        }
    }
}