if (backtrace == null) { initBacktrace(); } return backtrace;
if (clinitMethod == null) { beginClassInit(); } return clinitMethod;
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/compiler/impl/StandardASMCompiler.java
Method name: IRubyObject getBacktrace() Method name: SkinnyMethodAdapter getClassInitMethod()
Number of AST nodes: 3 Number of AST nodes: 3
1
if (backtrace == null) {
1
if (clinitMethod == null) {
2
            initBacktrace();
2
            beginClassInit();
3
        }
3
        }
4
        return backtrace;
4
        return clinitMethod;
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 statements2
    Number of unmapped statements in the first code fragment1
    Number of unmapped statements in the second code fragment1
    Time elapsed for statement mapping (ms)0.6
    Clone typeType 2
    Mapped Statements
    ID Statement ID Statement
    1
    if (backtrace == null)
    1
    if (backtrace == null)
    1
    if (clinitMethod == null)
    Differences
    Expression1Expression2Difference
    backtraceclinitMethodVARIABLE_NAME_MISMATCH
    org.jruby.runtime.builtin.IRubyObjectorg.jruby.compiler.impl.SkinnyMethodAdapterVARIABLE_TYPE_MISMATCH
    Preondition Violations
    Type org.jruby.runtime.builtin.IRubyObject of variable backtrace does not match with type org.jruby.compiler.impl.SkinnyMethodAdapter of variable clinitMethod
    • Make classes org.jruby.runtime.builtin.IRubyObject and org.jruby.compiler.impl.SkinnyMethodAdapter extend a common superclass
    1
    if (clinitMethod == null)
    2
    initBacktrace();
    2
    initBacktrace();
    2
    beginClassInit();
    Differences
    Expression1Expression2Difference
    initBacktracebeginClassInitMETHOD_INVOCATION_NAME_MISMATCH
    Preondition Violations
    Expression initBacktrace() cannot be parameterized, because it has dependencies to/from statements that will be extracted
    Expression beginClassInit() cannot be parameterized, because it has dependencies to/from statements that will be extracted
    • Inline private method beginClassInit
    Expression initBacktrace() is a void method call, and thus it cannot be parameterized
    Expression beginClassInit() is a void method call, and thus it cannot be parameterized
    2
    beginClassInit();
                                                  
    3
    return clinitMethod;
    3
    return backtrace;
                                            
    Precondition Violations (5)
    Row Violation
    1Type org.jruby.runtime.builtin.IRubyObject of variable backtrace does not match with type org.jruby.compiler.impl.SkinnyMethodAdapter of variable clinitMethod
    2Expression initBacktrace() cannot be parameterized, because it has dependencies to/from statements that will be extracted
    3Expression beginClassInit() cannot be parameterized, because it has dependencies to/from statements that will be extracted
    4Expression initBacktrace() is a void method call, and thus it cannot be parameterized
    5Expression beginClassInit() is a void method call, and thus it cannot be parameterized