if (runner == null) { runner = new Runner(); } return runner;
if (backtrace == null) { initBacktrace(); } return backtrace;
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/RubyException.java
Method name: Runner getRunner() Method name: IRubyObject getBacktrace()
Number of AST nodes: 3 Number of AST nodes: 3
1
if (runner == null) { runner = new Runner(); }
1
if (backtrace == null) {
2
            initBacktrace();
3
        }
2
    return runner;
4
        return backtrace;
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 (backtrace == null)
    Differences
    Expression1Expression2Difference
    runnerbacktraceVARIABLE_NAME_MISMATCH
    org.jruby.test.Runnerorg.jruby.runtime.builtin.IRubyObjectVARIABLE_TYPE_MISMATCH
    Preondition Violations
    Type org.jruby.test.Runner of variable runner does not match with type org.jruby.runtime.builtin.IRubyObject of variable backtrace
    • Make classes org.jruby.test.Runner and org.jruby.runtime.builtin.IRubyObject extend a common superclass
    1
    if (backtrace == null)
                                          
    2
    initBacktrace();
    2
    runner = new Runner();
                                                  
                                            
    3
    return backtrace;
    Preondition Violations
    Unmatched return backtrace;
    3
    return backtrace;
    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 org.jruby.runtime.builtin.IRubyObject of variable backtrace
    2Unmatched return backtrace;
    3Unmatched return runner;