/*
 * Copyright (c) 2016, 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
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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package com.oracle.truffle.llvm.parser.model.symbols.instructions;

import com.oracle.truffle.llvm.parser.model.symbols.Symbols;
import com.oracle.truffle.llvm.parser.model.visitors.InstructionVisitor;
import com.oracle.truffle.llvm.runtime.types.PointerType;
import com.oracle.truffle.llvm.runtime.types.Type;
import com.oracle.truffle.llvm.runtime.types.symbols.Symbol;

public final class AllocateInstruction extends ValueInstruction {

    private Symbol count;

    private final int align;

    private AllocateInstruction(Type type, int align) {
        super(type);
        this.align = align;
    }

    @Override
    public void accept(InstructionVisitor visitor) {
        visitor.visit(this);
    }

    @Override
    public int getAlign() {
        return align;
    }

    public Symbol getCount() {
        return count;
    }

    public Type getPointeeType() {
        return getType().getPointeeType();
    }

    @Override
    public PointerType getType() {
        return (PointerType) super.getType();
    }

    @Override
    public void replace(Symbol original, Symbol replacement) {
        if (count == original) {
            count = replacement;
        }
    }

    public static AllocateInstruction fromSymbols(Symbols symbols, Type type, int count, int align) {
        final AllocateInstruction inst = new AllocateInstruction(type, align);
        inst.count = symbols.getSymbol(count, inst);
        return inst;
    }
}