/*
 *  Copyright (C) 2010-2014 JPEXS
 * 
 *  This program is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 * 
 *  This program 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 General Public License for more details.
 * 
 *  You should have received a copy of the GNU General Public License
 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package com.jpexs.decompiler.flash.action.model;

import com.jpexs.decompiler.flash.SourceGeneratorLocalData;
import com.jpexs.decompiler.flash.action.Deobfuscation;
import com.jpexs.decompiler.flash.action.parser.script.ActionSourceGenerator;
import com.jpexs.decompiler.flash.action.parser.script.VariableActionItem;
import com.jpexs.decompiler.flash.action.swf4.ActionPush;
import com.jpexs.decompiler.flash.action.swf4.ActionSetVariable;
import com.jpexs.decompiler.flash.action.swf4.RegisterNumber;
import com.jpexs.decompiler.flash.action.swf5.ActionStoreRegister;
import com.jpexs.decompiler.flash.helpers.GraphTextWriter;
import com.jpexs.decompiler.graph.CompilationException;
import com.jpexs.decompiler.graph.GraphPart;
import com.jpexs.decompiler.graph.GraphSourceItem;
import com.jpexs.decompiler.graph.GraphSourceItemPos;
import com.jpexs.decompiler.graph.GraphTargetItem;
import com.jpexs.decompiler.graph.SourceGenerator;
import com.jpexs.decompiler.graph.model.LocalData;
import java.util.List;
import java.util.Set;

public class SetVariableActionItem extends ActionItem implements SetTypeActionItem {

    public GraphTargetItem name;
    //public GraphTargetItem value;
    private int tempRegister = -1;

    @Override
    public GraphPart getFirstPart() {
        return value.getFirstPart();
    }

    @Override
    public void setValue(GraphTargetItem value) {
        this.value = value;
    }

    @Override
    public int getTempRegister() {
        return tempRegister;
    }

    @Override
    public void setTempRegister(int tempRegister) {
        this.tempRegister = tempRegister;
    }

    @Override
    public GraphTargetItem getValue() {
        return value;
    }

    public SetVariableActionItem(GraphSourceItem instruction, GraphTargetItem name, GraphTargetItem value) {
        super(instruction, PRECEDENCE_ASSIGMENT);
        this.name = name;
        this.value = value;
    }

    @Override
    public GraphTextWriter appendTo(GraphTextWriter writer, LocalData localData) throws InterruptedException {
        if (((name instanceof DirectValueActionItem)&&((DirectValueActionItem)name).isString() && Deobfuscation.isValidName(((DirectValueActionItem)name).toStringNoQuotes(localData))) || name instanceof VariableActionItem) {
            stripQuotes(name, localData, writer);
            writer.append(" = ");
            return value.toString(writer, localData);
        } else {
            writer.append("set");
            writer.spaceBeforeCallParenthesies(2);
            writer.append("(");
            name.toString(writer, localData);
            writer.append(",");
            value.toString(writer, localData);
            return writer.append(")");
        }
    }

    @Override
    public GraphTargetItem getObject() {
        return new GetVariableActionItem(src, name);
    }

    @Override
    public List<GraphSourceItemPos> getNeededSources() {
        List<GraphSourceItemPos> ret = super.getNeededSources();
        ret.addAll(name.getNeededSources());
        ret.addAll(value.getNeededSources());
        return ret;
    }

    @Override
    public boolean isCompileTime(Set<GraphTargetItem> dependencies) {
        if (dependencies.contains(value)) {
            return false;
        }
        dependencies.add(value);
        return value.isCompileTime(dependencies);
    }

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

    @Override
    public List<GraphSourceItem> toSource(SourceGeneratorLocalData localData, SourceGenerator generator) throws CompilationException {
        ActionSourceGenerator asGenerator = (ActionSourceGenerator) generator;
        int tmpReg = asGenerator.getTempRegister(localData);
        return toSourceMerge(localData, generator, name, value, new ActionStoreRegister(tmpReg), new ActionSetVariable(), new ActionPush(new RegisterNumber(tmpReg)));
    }

    @Override
    public List<GraphSourceItem> toSourceIgnoreReturnValue(SourceGeneratorLocalData localData, SourceGenerator generator) throws CompilationException {
        return toSourceMerge(localData, generator, name, value, new ActionSetVariable());
    }

    @Override
    public boolean hasReturnValue() {
        return false;
    }
}