/*
 *  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.model.operations;

import com.jpexs.decompiler.flash.SourceGeneratorLocalData;
import com.jpexs.decompiler.flash.abc.avm2.instructions.AVM2Instruction;
import com.jpexs.decompiler.flash.abc.avm2.model.clauses.AssignmentAVM2Item;
import com.jpexs.decompiler.flash.abc.avm2.parser.script.AssignableAVM2Item;
import com.jpexs.decompiler.graph.CompilationException;
import com.jpexs.decompiler.graph.GraphSourceItem;
import com.jpexs.decompiler.graph.GraphTargetItem;
import com.jpexs.decompiler.graph.SourceGenerator;
import com.jpexs.decompiler.graph.model.UnaryOpItem;
import java.util.ArrayList;
import java.util.List;

public class PreDecrementAVM2Item extends UnaryOpItem implements AssignmentAVM2Item {

    public PreDecrementAVM2Item(GraphSourceItem instruction, GraphSourceItem lineStartIns,  GraphTargetItem object) {
        super(instruction, lineStartIns, PRECEDENCE_UNARY, object, "--");
    }

    @Override
    public boolean hasSideEffect() {
        return true;
    }

    @Override
    public List<GraphSourceItem> toSource(SourceGeneratorLocalData localData, SourceGenerator generator) throws CompilationException {
        if (value instanceof AssignableAVM2Item) {
            return ((AssignableAVM2Item) value).toSourceChange(localData, generator, false, true, true);
        }
        return new ArrayList<>(); //?
    }

    @Override
    public List<GraphSourceItem> toSourceIgnoreReturnValue(SourceGeneratorLocalData localData, SourceGenerator generator) throws CompilationException {
        if (value instanceof AssignableAVM2Item) {
            return ((AssignableAVM2Item) value).toSourceChange(localData, generator, false, true, false);
        }
        return new ArrayList<>(); //?
    }

    @Override
    public GraphTargetItem returnType() {
        return value.returnType();
    }
}
