/*
 *  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.swf4.ActionStringExtract;
import com.jpexs.decompiler.flash.helpers.GraphTextWriter;
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;

public class StringExtractActionItem extends ActionItem {

    //public GraphTargetItem value;
    public GraphTargetItem index;
    public GraphTargetItem count;

    public StringExtractActionItem(GraphSourceItem instruction, GraphTargetItem value, GraphTargetItem index, GraphTargetItem count) {
        super(instruction, PRECEDENCE_PRIMARY);
        this.value = value;
        this.index = index;
        this.count = count;
    }

    @Override
    public GraphTextWriter appendTo(GraphTextWriter writer, LocalData localData) throws InterruptedException {
        value.toString(writer, localData);
        writer.append(".substr");
        writer.spaceBeforeCallParenthesies(2);
        writer.append("(");
        index.toString(writer, localData);
        writer.append(",");
        count.toString(writer, localData);
        return writer.append(")");
    }

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

    @Override
    public List<GraphSourceItem> toSource(SourceGeneratorLocalData localData, SourceGenerator generator) {
        return toSourceMerge(localData, generator, value, index, count, new ActionStringExtract());
    }

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