/*
 *  Copyright (C) 2010-2015 JPEXS, All rights reserved.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 3.0 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library.
 */
package com.jpexs.decompiler.flash.abc.avm2.instructions.arithmetic;

import com.jpexs.decompiler.flash.abc.ABC;
import com.jpexs.decompiler.flash.abc.AVM2LocalData;
import com.jpexs.decompiler.flash.abc.avm2.AVM2ConstantPool;
import com.jpexs.decompiler.flash.abc.avm2.LocalDataArea;
import com.jpexs.decompiler.flash.abc.avm2.instructions.AVM2Instruction;
import com.jpexs.decompiler.flash.abc.avm2.instructions.InstructionDefinition;
import com.jpexs.decompiler.flash.abc.avm2.model.DecrementAVM2Item;
import com.jpexs.decompiler.graph.GraphTargetItem;
import com.jpexs.decompiler.graph.TranslateStack;
import java.util.List;

public class DecrementIIns extends InstructionDefinition {

    public DecrementIIns() {
        super(0xc1, "decrement_i", new int[]{}, true);
    }

    @Override
    public boolean execute(LocalDataArea lda, AVM2ConstantPool constants, AVM2Instruction ins) {
        Object obj = lda.operandStack.pop();
        if (obj instanceof Long) {
            Long obj2 = ((Long) obj) - 1;
            lda.operandStack.push(obj2);
        } else if (obj instanceof Double) {
            Double obj2 = ((Double) obj) - 1;
            lda.operandStack.push(obj2);
        }
        if (obj instanceof String) {
            Double obj2 = Double.parseDouble((String) obj) - 1;
            lda.operandStack.push(obj2);
        } else {
            lda.executionException = "Cannot decrement local register";
            return false;
        }
        return true;
    }

    @Override
    public void translate(AVM2LocalData localData, TranslateStack stack, AVM2Instruction ins, List<GraphTargetItem> output, String path) {
        stack.push(new DecrementAVM2Item(ins, stack.pop()));
    }

    @Override
    public int getStackPopCount(AVM2Instruction ins, ABC abc) {
        return 1;
    }

    @Override
    public int getStackPushCount(AVM2Instruction ins, ABC abc) {
        return 1;
    }
}
