/*
 *  Copyright (C) 2010-2013 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.graph.model;

import com.jpexs.decompiler.flash.SourceGeneratorLocalData;
import com.jpexs.decompiler.flash.action.model.operations.Inverted;
import com.jpexs.decompiler.flash.ecma.EcmaScript;
import com.jpexs.decompiler.graph.GraphSourceItem;
import com.jpexs.decompiler.graph.GraphTargetItem;
import com.jpexs.decompiler.graph.SourceGenerator;
import java.util.List;
import java.util.Set;

/**
 *
 * @author JPEXS
 */
public class NotItem extends UnaryOpItem implements LogicalOpItem, Inverted {

    public NotItem(GraphSourceItem instruction, GraphTargetItem value) {
        super(instruction, PRECEDENCE_UNARY, value, "!");
    }

    @Override
    public Object getResult() {
        Object ret = EcmaScript.toBoolean(value.getResult());
        if (ret == Boolean.TRUE) {
            return Boolean.FALSE;
        }
        if (ret == Boolean.FALSE) {
            return Boolean.TRUE;
        }
        return ret;
    }

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

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

    public GraphTargetItem getOriginal() {
        return value;
    }

    @Override
    public List<GraphSourceItem> toSource(SourceGeneratorLocalData localData, SourceGenerator generator) {
        return generator.generate(localData, this);
    }

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