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 * conditions and the following disclaimer.
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 * 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.
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 * 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
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 * 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.parser.model.symbols.constants;

import com.oracle.truffle.llvm.parser.model.enums.CompareOperator;
import com.oracle.truffle.llvm.parser.model.symbols.Symbols;
import com.oracle.truffle.llvm.parser.model.visitors.ConstantVisitor;
import com.oracle.truffle.llvm.runtime.types.Type;
import com.oracle.truffle.llvm.runtime.types.symbols.Symbol;

public final class CompareConstant extends AbstractConstant {

    private final CompareOperator operator;

    private Symbol lhs;

    private Symbol rhs;

    private CompareConstant(Type type, CompareOperator operator) {
        super(type);
        this.operator = operator;
    }

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

    public Symbol getLHS() {
        return lhs;
    }

    public CompareOperator getOperator() {
        return operator;
    }

    public Symbol getRHS() {
        return rhs;
    }

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

    public static CompareConstant fromSymbols(Symbols symbols, Type type, int opcode, int lhs, int rhs) {
        final CompareConstant constant = new CompareConstant(type, CompareOperator.decode(opcode));
        constant.lhs = symbols.getSymbol(lhs, constant);
        constant.rhs = symbols.getSymbol(rhs, constant);
        return constant;
    }
}