ObjectCloneModel.java

/*
 * Tai-e: A Static Analysis Framework for Java
 *
 * Copyright (C) 2022 Tian Tan <tiantan@nju.edu.cn>
 * Copyright (C) 2022 Yue Li <yueli@nju.edu.cn>
 *
 * This file is part of Tai-e.
 *
 * Tai-e 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
 * of the License, or (at your option) any later version.
 *
 * Tai-e 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 Tai-e. If not, see <https://www.gnu.org/licenses/>.
 */

package pascal.taie.analysis.pta.plugin.natives;

import pascal.taie.analysis.pta.core.solver.Solver;
import pascal.taie.analysis.pta.plugin.util.IRModelPlugin;
import pascal.taie.analysis.pta.plugin.util.InvokeHandler;
import pascal.taie.analysis.pta.plugin.util.InvokeUtils;
import pascal.taie.ir.exp.Var;
import pascal.taie.ir.stmt.Copy;
import pascal.taie.ir.stmt.Invoke;
import pascal.taie.ir.stmt.Stmt;

import java.util.List;

public class ObjectCloneModel extends IRModelPlugin {
    ObjectCloneModel(Solver solver) {
        super(solver);
    }

    @InvokeHandler(signature = "<java.lang.Object: java.lang.Object clone()>")
    public List<Stmt> objectClone(Invoke invoke) {
        Var result = invoke.getResult();
        return result != null
                ? List.of(new Copy(result, InvokeUtils.getVar(invoke, InvokeUtils.BASE)))
                : List.of();
    }
}