if (runner == null) { runner = new Runner(); } return runner;
if (classVariables == null) { classVariables = new Hashtable<String, IRubyObject>(4); } return classVariables;
Clone fragments detected by clone detection tool
File path: /jruby-1.4.0/test/org/jruby/test/Runner.java File path: /jruby-1.4.0/src/org/jruby/RubyModule.java
Method name: Runner getRunner() Method name: Map getClassVariables()
Number of AST nodes: 3 Number of AST nodes: 3
1
if (runner == null) { runner = new Runner();
1
if (classVariables == null) {
2
            classVariables = new Hashtable<String, IRubyObject>(4);
2
 }
3
        }
3
    return runner;
4
        return classVariables;
Summary
Number of common nesting structure subtrees1
Number of refactorable cases0
Number of non-refactorable cases1
Time elapsed for finding largest common nesting structure subtrees (ms)0.1
Clones locationClones are in different classes
Number of node comparisons5
  1. {Non-refactorable}
    Mapping Summary
    Number of mapped statements1
    Number of unmapped statements in the first code fragment2
    Number of unmapped statements in the second code fragment2
    Time elapsed for statement mapping (ms)0.5
    Clone typeType 2
    Mapped Statements
    ID Statement ID Statement
    1
    if (runner == null)
    1
    if (runner == null)
    1
    if (classVariables == null)
    Differences
    Expression1Expression2Difference
    runnerclassVariablesVARIABLE_NAME_MISMATCH
    org.jruby.test.Runnerjava.util.MapVARIABLE_TYPE_MISMATCH
    Preondition Violations
    Type org.jruby.test.Runner of variable runner does not match with type java.util.Map<java.lang.String,org.jruby.runtime.builtin.IRubyObject> of variable classVariables
    • Make classes org.jruby.test.Runner and java.util.Map extend a common superclass
    1
    if (classVariables == null)
                                                                                                                  
    2
    classVariables = new Hashtable<String, IRubyObject>(4);
    2
    runner = new Runner();
                                                  
                                                      
    3
    return classVariables;
    Preondition Violations
    Unmatched return classVariables;
    3
    return classVariables;
    3
    return runner;
    3
    return runner;
    Preondition Violations
    Unmatched return runner;
                                      
    Precondition Violations (3)
    Row Violation
    1Type org.jruby.test.Runner of variable runner does not match with type java.util.Map<java.lang.String,org.jruby.runtime.builtin.IRubyObject> of variable classVariables
    2Unmatched return classVariables;
    3Unmatched return runner;