173-118-181

if (packageRegistry == null) { packageRegistry = new EPackageRegistryImpl(EPackage.Registry.INSTANCE); } return packageRegistry;
if (wrappers == null) { wrappers = new Disposable(); } wrappers.add(wrapper);

Clone fragments detected by clone detection tool
File path: /emf-2.4.1/src/org/eclipse/emf/ecore/resource/impl/ResourceSetImpl.java |  | File path: /emf-2.4.1/src/org/eclipse/emf/edit/provider/ItemProviderAdapter.java
Method name: `EPackage.Registry getPackageRegistry()` |  | Method name: `Object wrap(EObject, EStructuralFeature, Object, int)`
Number of AST nodes: 3 |  | Number of AST nodes: 3

1

    if (packageRegistry == null)↵

1

    if (wrappers == null)↵

2

        {↵

2

          {↵

3

          packageRegistry = new EPackageRegistryImpl(EPackage.Registry.INSTANCE);↵

3

            wrappers = new Disposable();↵

4

        }↵

4

        ↵

5

        return packageRegistry↵

5

      }↵

6

    ;

6

          wrappers.add(wrapper);

See real code fragment |  | See real code fragment

Summary
Number of common nesting structure subtrees | 1
Number of refactorable cases | 0
Number of non-refactorable cases | 1
Time elapsed for finding largest common nesting structure subtrees (ms) | 0.2
Clones location | Clones are in different classes
Number of node comparisons | 5

1. {Non-refactorable}

   Mapping Summary
   Number of mapped statements | 1
   Number of unmapped statements in the first code fragment | 2
   Number of unmapped statements in the second code fragment | 2
   Time elapsed for statement mapping (ms) | 0.8
   Clone type | Type 2

   Mapped Statements
   ID | Statement |  | ID | Statement
   --- | --- | --- | --- | ---

   1

       if (packageRegistry == null)

   1 | if (packageRegistry == null)
   12 | if (wrappers == null)

   Differences
   Expression1 | Expression2 | Difference
   --- | --- | ---
   packageRegistry | wrappers | VARIABLE_NAME_MISMATCH
   org.eclipse.emf.ecore.EPackage.Registry | org.eclipse.emf.edit.provider.Disposable | VARIABLE_TYPE_MISMATCH

   Preondition Violations

   Type org.eclipse.emf.ecore.EPackage.Registry of variable packageRegistry does not match with type org.eclipse.emf.edit.provider.Disposable of variable wrappers
   - Make classes org.eclipse.emf.ecore.EPackage.Registry and org.eclipse.emf.edit.provider.Disposable extend a common superclass

   12

       if (wrappers == null)

   2

       packageRegistry = new EPackageRegistryImpl(EPackage.Registry.INSTANCE);

   2 | packageRegistry = new EPackageRegistryImpl(EPackage.Registry.INSTANCE);

   Preondition Violations
   Unmatched statement packageRegistry=new EPackageRegistryImpl(EPackage.Registry.INSTANCE); cannot be moved before the extracted code, because it has control dependencies from statements that will be extracted

   13 | wrappers = new Disposable();

   Preondition Violations
   Unmatched statement wrappers=new Disposable(); cannot be moved before the extracted code, because it has control dependencies from statements that will be extracted

   13

       wrappers = new Disposable();

   3

       return packageRegistry;

   3 | return packageRegistry;

   Preondition Violations
   Unmatched return packageRegistry;

   14

       wrappers.add(wrapper);

   Precondition Violations (5)
   Row | Violation
   --- | ---
   1 | Type org.eclipse.emf.ecore.EPackage.Registry of variable packageRegistry does not match with type org.eclipse.emf.edit.provider.Disposable of variable wrappers
   2 | Unmatched statement packageRegistry=new EPackageRegistryImpl(EPackage.Registry.INSTANCE); cannot be moved before the extracted code, because it has control dependencies from statements that will be extracted
   3 | Unmatched statement wrappers=new Disposable(); cannot be moved before the extracted code, because it has control dependencies from statements that will be extracted
   4 | Unmatched return packageRegistry;
   5 | The refactoring of the clones is infeasible, because the number of macthed statements is equal to zero