/*
 * Copyright (c) 2016, Oracle and/or its affiliates.
 *
 * All rights reserved.
 *
 * 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
 * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 * OF THE POSSIBILITY OF SUCH DAMAGE.
 */
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.Type;
import com.oracle.truffle.llvm.runtime.types.symbols.Symbol;
import com.oracle.truffle.llvm.runtime.types.symbols.ValueSymbol;

public final class LandingpadInstruction extends ValueInstruction {

    private Symbol value;
    private final boolean isCleanup;
    private final long[] clauseTypes;
    private Symbol[] clauseSymbols;

    private LandingpadInstruction(Type type, boolean isCleanup, long[] clauseTypes) {
        super(type);
        this.isCleanup = isCleanup;
        this.clauseTypes = clauseTypes;
    }

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

    @Override
    public int getAlign() {
        return ((ValueSymbol) value).getAlign();
    }

    public Symbol getValue() {
        return value;
    }

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

    public boolean isCleanup() {
        return isCleanup;
    }

    public long[] getClauseTypes() {
        return clauseTypes;
    }

    public Symbol[] getClauseSymbols() {
        return clauseSymbols;
    }

    public static Instruction generate(Symbols symbols, Type type, boolean isCleanup, long[] clauseTypes, long[] clauseTODO) {
        LandingpadInstruction l = new LandingpadInstruction(type, isCleanup, clauseTypes);
        Symbol[] s = new Symbol[clauseTODO.length];
        for (int i = 0; i < clauseTODO.length; i++) {
            s[i] = symbols.getSymbol((int) clauseTODO[i], l);
        }
        l.clauseSymbols = s;
        return l;
    }
}