if (backtrace == null) { initBacktrace(); } return backtrace;
if (threadLocalVariables == null) { threadLocalVariables = new HashMap<IRubyObject, IRubyObject>(); } return threadLocalVariables;
Clone fragments detected by clone detection tool
File path: /jruby-1.4.0/src/org/jruby/RubyException.java File path: /jruby-1.4.0/src/org/jruby/RubyThread.java
Method name: IRubyObject getBacktrace() Method name: Map getThreadLocals()
Number of AST nodes: 3 Number of AST nodes: 3
1
if (backtrace == null) {
1
if (threadLocalVariables == null) {
2
            initBacktrace();
2
            threadLocalVariables = new HashMap<IRubyObject, IRubyObject>();
3
        }
3
        }
4
        return backtrace;
4
        return threadLocalVariables;
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 having the same super class
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 (backtrace == null)
    1
    if (backtrace == null)
    1
    if (threadLocalVariables == null)
    Differences
    Expression1Expression2Difference
    backtracethreadLocalVariablesVARIABLE_NAME_MISMATCH
    org.jruby.runtime.builtin.IRubyObjectjava.util.MapVARIABLE_TYPE_MISMATCH
    Preondition Violations
    Type org.jruby.runtime.builtin.IRubyObject of variable backtrace does not match with type java.util.Map<org.jruby.runtime.builtin.IRubyObject,org.jruby.runtime.builtin.IRubyObject> of variable threadLocalVariables
    • Make classes org.jruby.runtime.builtin.IRubyObject and java.util.Map extend a common superclass
    1
    if (threadLocalVariables == null)
                                                                                                                                  
    2
    threadLocalVariables = new HashMap<IRubyObject, IRubyObject>();
    2
    initBacktrace();
                                          
                                                                  
    3
    return threadLocalVariables;
    Preondition Violations
    Unmatched return threadLocalVariables;
    3
    return threadLocalVariables;
    3
    return backtrace;
    3
    return backtrace;
    Preondition Violations
    Unmatched return backtrace;
                                            
    Precondition Violations (3)
    Row Violation
    1Type org.jruby.runtime.builtin.IRubyObject of variable backtrace does not match with type java.util.Map<org.jruby.runtime.builtin.IRubyObject,org.jruby.runtime.builtin.IRubyObject> of variable threadLocalVariables
    2Unmatched return threadLocalVariables;
    3Unmatched return backtrace;