/**
* Copyright (C) 2010-2017 Gordon Fraser, Andrea Arcuri and EvoSuite
* contributors
*
* This file is part of EvoSuite.
*
* EvoSuite 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.
*
* EvoSuite 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 Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with EvoSuite. If not, see <http://www.gnu.org/licenses/>.
*/
package org.evosuite.coverage.dataflow;
import org.evosuite.graphs.cfg.BytecodeInstruction;
/**
* An object of this class corresponds to a Definition inside the class under
* test.
*
* Definitions are created by the DefUseFactory via the DefUsePool.
*
* @author Andre Mis
*/
public class Definition extends DefUse {
private static final long serialVersionUID = 1141846324999759006L;
Definition(BytecodeInstruction wrap) {
super(wrap);
if (!DefUsePool.isKnownAsDefinition(wrap))
throw new IllegalArgumentException(
"Instruction must be known as a Definition by the DefUsePool");
}
/**
* Determines whether this Definition can be an active definition for the
* given instruction.
*
* This is the case if instruction constitutes a Use for the same variable
* as this Definition
*
* Not to be confused with DefUse.canBecomeActiveDefinitionFor, which is
* sort of the dual to this method
*
* @param instruction
* a {@link org.evosuite.graphs.cfg.BytecodeInstruction} object.
* @return a boolean.
*/
public boolean canBeActiveFor(BytecodeInstruction instruction) {
if (!instruction.isUse())
return false;
// if(!DefUsePool.isKnownAsUse(instruction))
// return false;
// Use use = DefUseFactory.makeUse(instruction);
return sharesVariableWith(instruction);
}
}