173-196-208

if (referencedEPackageFilter == null) { referencedEPackageFilter = createReferencedEPackageFilter(); } return referencedEPackageFilter.filterReferencedEPackages(ePackages, referencedGenPackages);
if (buffer == null) { buffer = new Buffer(100); } return buffer.read();

Clone fragments detected by clone detection tool
File path: /emf-2.4.1/src/org/eclipse/emf/converter/ModelConverter.java |  | File path: /emf-2.4.1/src/org/eclipse/emf/ecore/resource/URIConverter.java
Method name: `List filterReferencedEPackages(Collection, List)` |  | Method name: `int read()`
Number of AST nodes: 3 |  | Number of AST nodes: 3

1

    if (referencedEPackageFilter == null)↵

1

    if (buffer == null)↵

2

        {↵

2

          {↵

3

          referencedEPackageFilter = createReferencedEPackageFilter();↵

3

            buffer = new Buffer(100);↵

4

        }↵

4

          }↵

5

        return referencedEPackageFilter.filterReferencedEPackages(ePackages, referencedGenPackages↵

5

          ↵

6

    );

6

          return buffer.read();

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 (referencedEPackageFilter == null)

   1 | if (referencedEPackageFilter == null)
   1 | if (buffer == null)

   Differences
   Expression1 | Expression2 | Difference
   --- | --- | ---
   referencedEPackageFilter | buffer | VARIABLE_NAME_MISMATCH
   org.eclipse.emf.converter.ModelConverter.ReferencedEPackageFilter | org.eclipse.emf.ecore.resource.URIConverter.ReadableInputStream.Buffer | VARIABLE_TYPE_MISMATCH

   Preondition Violations

   Type org.eclipse.emf.converter.ModelConverter.ReferencedEPackageFilter of variable referencedEPackageFilter does not match with type org.eclipse.emf.ecore.resource.URIConverter.ReadableInputStream.Buffer of variable buffer
   - Make classes org.eclipse.emf.converter.ModelConverter.ReferencedEPackageFilter and org.eclipse.emf.ecore.resource.URIConverter.ReadableInputStream.Buffer extend a common superclass

   1

       if (buffer == null)

   2 | buffer = new Buffer(100);

   Preondition Violations
   Unmatched statement buffer=new Buffer(100); cannot be moved before the extracted code, because it has control dependencies from statements that will be extracted
   Unmatched statement buffer=new Buffer(100); cannot be moved before or after the extracted code, because it throws exception(s) that should be caught by a try block that will be extracted

   2

       buffer = new Buffer(100);

   2

       referencedEPackageFilter = createReferencedEPackageFilter();

   2 | referencedEPackageFilter = createReferencedEPackageFilter();

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

   3 | return buffer.read();

   Preondition Violations
   Unmatched statement return buffer.read(); cannot be moved before the extracted code, because it has control dependencies from statements that will be extracted
   Unmatched return buffer.read();

   3

       return buffer.read();

   3

       return referencedEPackageFilter.filterReferencedEPackages(ePackages, referencedGenPackages);

   3 | return referencedEPackageFilter.filterReferencedEPackages(ePackages, referencedGenPackages);

   Preondition Violations
   Unmatched statement return referencedEPackageFilter.filterReferencedEPackages(ePackages,referencedGenPackages); cannot be moved before the extracted code, because it has control dependencies from statements that will be extracted
   Unmatched return referencedEPackageFilter.filterReferencedEPackages(ePackages,referencedGenPackages);

   Precondition Violations (9)
   Row | Violation
   --- | ---
   1 | Type org.eclipse.emf.converter.ModelConverter.ReferencedEPackageFilter of variable referencedEPackageFilter does not match with type org.eclipse.emf.ecore.resource.URIConverter.ReadableInputStream.Buffer of variable buffer
   2 | Unmatched statement buffer=new Buffer(100); cannot be moved before the extracted code, because it has control dependencies from statements that will be extracted
   3 | Unmatched statement buffer=new Buffer(100); cannot be moved before or after the extracted code, because it throws exception(s) that should be caught by a try block that will be extracted
   4 | Unmatched statement referencedEPackageFilter=createReferencedEPackageFilter(); cannot be moved before the extracted code, because it has control dependencies from statements that will be extracted
   5 | Unmatched statement return buffer.read(); cannot be moved before the extracted code, because it has control dependencies from statements that will be extracted
   6 | Unmatched return buffer.read();
   7 | Unmatched statement return referencedEPackageFilter.filterReferencedEPackages(ePackages,referencedGenPackages); cannot be moved before the extracted code, because it has control dependencies from statements that will be extracted
   8 | Unmatched return referencedEPackageFilter.filterReferencedEPackages(ePackages,referencedGenPackages);
   9 | The refactoring of the clones is infeasible, because the number of macthed statements is equal to zero