/*
* Copyright (C) 2010-2016 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.localregs;
import com.jpexs.decompiler.flash.abc.AVM2LocalData;
import com.jpexs.decompiler.flash.abc.avm2.AVM2Code;
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.DecLocalAVM2Item;
import com.jpexs.decompiler.flash.abc.avm2.model.IntegerValueAVM2Item;
import com.jpexs.decompiler.flash.abc.avm2.model.operations.SubtractAVM2Item;
import com.jpexs.decompiler.flash.ecma.EcmaScript;
import com.jpexs.decompiler.flash.ecma.NotCompileTime;
import com.jpexs.decompiler.graph.GraphTargetItem;
import com.jpexs.decompiler.graph.TranslateStack;
import java.util.List;
/**
*
* @author JPEXS
*/
public class DecLocalIIns extends InstructionDefinition {
public DecLocalIIns() {
super(0xc3, "declocal_i", new int[]{AVM2Code.DAT_LOCAL_REG_INDEX}, true);
}
@Override
public boolean execute(LocalDataArea lda, AVM2ConstantPool constants, AVM2Instruction ins) {
int locRegIndex = ins.getParamAsLong(constants, 0).intValue();
Object obj = lda.localRegisters.get(locRegIndex);
if (obj != NotCompileTime.INSTANCE) {
lda.localRegisters.put(locRegIndex, EcmaScript.toInt32(obj) - 1);
}
return true;
}
@Override
public void translate(AVM2LocalData localData, TranslateStack stack, AVM2Instruction ins, List<GraphTargetItem> output, String path) {
int regId = ins.operands[0];
output.add(new DecLocalAVM2Item(ins, localData.lineStartInstruction, regId));
if (localData.localRegs.containsKey(regId)) {
localData.localRegs.put(regId, new SubtractAVM2Item(ins, localData.lineStartInstruction, localData.localRegs.get(regId), new IntegerValueAVM2Item(ins, localData.lineStartInstruction, 1L)));
} else {
//localRegs.put(regIndex, new SubtractAVM2Item(ins, localData.lineStartInstruction, new IntegerValueAVM2Item(ins, localData.lineStartInstruction, new Long(0)), new IntegerValueAVM2Item(ins, localData.lineStartInstruction, new Long(1))));
}
if (!localData.localRegAssignmentIps.containsKey(regId)) {
localData.localRegAssignmentIps.put(regId, 0);
}
localData.localRegAssignmentIps.put(regId, localData.localRegAssignmentIps.get(regId) + 1);
}
}