173-53-102

if (textProvider == null) { textProvider = new TextProvider(); } return textProvider;
if (extensions == null) { extensions = new ArrayList<String>(); } return extensions;

Clone fragments detected by clone detection tool
File path: /emf-2.4.1/src/org/eclipse/emf/common/ui/DiagnosticComposite.java |  | File path: /emf-2.4.1/src/org/eclipse/emf/importer/ui/contribution/ModelImporterManager.java
Method name: `TextProvider getTextProvider()` |  | Method name: `List getExtensions()`
Number of AST nodes: 3 |  | Number of AST nodes: 3

1

    if (textProvider == null)↵

1

    if (extensions == null)↵

2

        {↵

2

          {↵

3

          textProvider = new TextProvider();↵

3

            extensions = new ArrayList<String>();↵

4

        }↵

4

        ↵

5

      }↵

5

        return textProvider;

6

          return extensions;

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) | 0.1
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) | 0.6
   Clone type | Type 2

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

   1

       if (textProvider == null)

   1 | if (textProvider == null)
   1 | if (extensions == null)

   Differences
   Expression1 | Expression2 | Difference
   --- | --- | ---
   textProvider | extensions | VARIABLE_NAME_MISMATCH
   org.eclipse.emf.common.ui.DiagnosticComposite.TextProvider | java.util.List | VARIABLE_TYPE_MISMATCH

   Preondition Violations

   Type org.eclipse.emf.common.ui.DiagnosticComposite.TextProvider of variable textProvider does not match with type java.util.List<java.lang.String> of variable extensions
   - Make classes org.eclipse.emf.common.ui.DiagnosticComposite.TextProvider and java.util.List extend a common superclass

   1

       if (extensions == null)

   2 | extensions = new ArrayList<String>();

   Preondition Violations
   Unmatched statement extensions=new ArrayList<String>(); cannot be moved before the extracted code, because it has control dependencies from statements that will be extracted

   2

       extensions = new ArrayList<String>();

   2

       textProvider = new TextProvider();

   2 | textProvider = new TextProvider();

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

   3 | return extensions;

   Preondition Violations
   Unmatched return extensions;

   3

       return extensions;

   3

       return textProvider;

   3 | return textProvider;

   Preondition Violations
   Unmatched return textProvider;

   Precondition Violations (6)
   Row | Violation
   --- | ---
   1 | Type org.eclipse.emf.common.ui.DiagnosticComposite.TextProvider of variable textProvider does not match with type java.util.List<java.lang.String> of variable extensions
   2 | Unmatched statement extensions=new ArrayList<String>(); cannot be moved before the extracted code, because it has control dependencies from statements that will be extracted
   3 | Unmatched statement textProvider=new TextProvider(); cannot be moved before the extracted code, because it has control dependencies from statements that will be extracted
   4 | Unmatched return extensions;
   5 | Unmatched return textProvider;
   6 | The refactoring of the clones is infeasible, because the number of macthed statements is equal to zero