/**
* Copyright (C) 2015 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package mujava.op;
import java.io.*;
import openjava.mop.*;
import openjava.ptree.*;
import mujava.MutationSystem;
import mujava.util.InheritanceINFO;
/**
* <p>Generate PMD (Member variable declaration with parent class type) mutants ---
* change the declared type of an object reference to the parent of the original
* declared type
* </p>
* <p><i>Example</i>: let class A be the parent of class B --
* B b; b = new B(); is mutated to A b; b = new B();
* </p>
* @author Yu-Seung Ma
* @version 1.0
*/
public class PMD extends mujava.op.util.PolymorphicMutator
{
public PMD(FileEnvironment file_env, ClassDeclaration cdecl, CompilationUnit comp_unit)
{
super( file_env, comp_unit );
}
public void visit(VariableDeclaration p) throws ParseTreeException
{
this.evaluateDown(p);
if (MutationSystem.isPrimitive(getType(p.getTypeSpecifier())))
return;
String original_class = p.getTypeSpecifier().getName();
InheritanceINFO inf = MutationSystem.getInheritanceInfo(original_class);
if (inf == null)
return;
if (inf.getParent() != null)
{
generateMutant(p, inf.getParent());
}
else
{
if (original_class.equals("java.lang.Object"))
return;
try
{
Class super_class = Class.forName(original_class).getSuperclass();
if (!((super_class == null) || (super_class.getName().equals("java.lang.Object"))))
generateMutant(p, super_class.getName());
} catch (Exception e)
{
return;
}
}
}
/**
* Generate PMD mutant and write output to file
* @param p
* @param parent
*/
public void generateMutant(VariableDeclaration p, String parent)
{
String declared_type = p.getTypeSpecifier().getName();
if (hasHidingVariable(declared_type, parent))
{
VariableDeclaration mutant = (VariableDeclaration)p.makeRecursiveCopy();
mutant.setTypeSpecifier(new TypeName(parent));
outputToFile(p, mutant);
}
}
/**
* Generate PMD mutant and write output to file
* @param p
* @param parent
*/
public void generateMutant(VariableDeclaration p, InheritanceINFO parent)
{
String declared_type = p.getTypeSpecifier().getName();
String parent_type = parent.getClassName();
if (hasHidingVariable(declared_type, parent_type))
{
VariableDeclaration mutant = (VariableDeclaration)p.makeRecursiveCopy();
mutant.setTypeSpecifier(new TypeName(parent_type));
outputToFile(p, mutant);
}
if (parent.getParent() != null)
{
generateMutant(p,parent.getParent());
}
}
/**
* Generate PMD mutant and write output to file
* @param p
* @param parent
*/
public void generateMutant(FieldDeclaration p, String parent)
{
String declared_type = p.getTypeSpecifier().getName();
if (hasHidingVariable(declared_type, parent))
{
FieldDeclaration mutant = (FieldDeclaration)p.makeRecursiveCopy();
mutant.setTypeSpecifier(new TypeName(parent));
outputToFile(p, mutant);
}
}
/**
* Generate PMD mutant and write output to file
* @param p
* @param parent
*/
public void generateMutant(FieldDeclaration p, InheritanceINFO parent)
{
String declared_type = p.getTypeSpecifier().getName();
String parent_type = parent.getClassName();
if (hasHidingVariable(declared_type, parent_type))
{
FieldDeclaration mutant = (FieldDeclaration)p.makeRecursiveCopy();
mutant.setTypeSpecifier(new TypeName(parent.getClassName()));
outputToFile(p, mutant);
}
if (parent.getParent() != null)
{
generateMutant(p, parent.getParent());
}
}
public void visit( FieldDeclaration p ) throws ParseTreeException
{
if (MutationSystem.isPrimitive(getType(p.getTypeSpecifier())))
return;
String original_class = p.getTypeSpecifier().getName();
InheritanceINFO inf = MutationSystem.getInheritanceInfo(original_class);
if (inf == null)
return;
if (inf.getParent() != null)
{
generateMutant(p, inf.getParent());
}
else
{
if (original_class.equals("java.lang.Object"))
return;
try
{
Class super_class = Class.forName(original_class).getSuperclass();
if (!((super_class == null) || (super_class.getName().equals("java.lang.Object"))))
generateMutant(p,super_class.getName());
} catch(Exception e)
{
return;
}
}
}
/**
* Output PMD mutants to files
* @param original
* @param mutant
*/
public void outputToFile(FieldDeclaration original, FieldDeclaration mutant)
{
if (comp_unit == null)
return;
String f_name;
num++;
f_name = getSourceName(this);
String mutant_dir = getMuantID();
try
{
PrintWriter out = getPrintWriter(f_name);
PMD_Writer writer = new PMD_Writer( mutant_dir,out );
writer.setMutant(original,mutant);
//writer.setDebugLevel( 0 );
comp_unit.accept( writer );
out.flush();
out.close();
} catch ( IOException e ) {
System.err.println( "fails to create " + f_name );
} catch ( ParseTreeException e ) {
System.err.println( "errors during printing " + f_name );
e.printStackTrace();
}
}
/**
* Output PMD mutants to files
* @param original
* @param mutant
*/
public void outputToFile(VariableDeclaration original, VariableDeclaration mutant)
{
if (comp_unit == null) return;
String f_name;
num++;
f_name = getSourceName(this);
String mutant_dir = getMuantID();
try
{
PrintWriter out = getPrintWriter(f_name);
PMD_Writer writer = new PMD_Writer( mutant_dir,out );
writer.setMutant(original,mutant);
//writer.setDebugLevel( 0 );
comp_unit.accept( writer );
out.flush();
out.close();
} catch ( IOException e ) {
System.err.println( "fails to create " + f_name );
} catch ( ParseTreeException e ) {
System.err.println( "errors during printing " + f_name );
e.printStackTrace();
}
}
}