IRubyObject result = op_aref(context, arg0); if (!result.isNil()) op_aset(context, arg0, RubyString.newEmptyString(context.getRuntime())); return result;
IRubyObject line = gets(context, separator); if (line.isNil()) throw context.getRuntime().newEOFError(); return line;
Clone fragments detected by clone detection tool
File path: /jruby-1.4.0/src/org/jruby/RubyString.java File path: /jruby-1.4.0/src/org/jruby/RubyIO.java
Method name: IRubyObject slice_bang(ThreadContext, IRubyObject) Method name: IRubyObject readline(ThreadContext, IRubyObject)
Number of AST nodes: 4 Number of AST nodes: 4
1
IRubyObject result = op_aref(context, arg0);
1
IRubyObject line = gets(context, separator);
2
        if (!result.isNil()) op_aset(context, arg0, RubyString.newEmptyString(context.getRuntime()));
2
        if (line.isNil()) throw context.getRuntime().newEOFError();
3
        return result;
3
        return line;
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 comparisons8
  1. {Non-refactorable}
    Mapping Summary
    Number of mapped statements3
    Number of unmapped statements in the first code fragment1
    Number of unmapped statements in the second code fragment1
    Time elapsed for statement mapping (ms)246.4
    Clone typeType 2
    Mapped Statements
    ID Statement ID Statement
    1
    IRubyObject result = op_aref(context, arg0);
    1
    IRubyObject result = op_aref(context, arg0);
    1
    IRubyObject line = gets(context, separator);
    Differences
    Expression1Expression2Difference
    resultlineVARIABLE_NAME_MISMATCH
    op_arefgetsMETHOD_INVOCATION_NAME_MISMATCH
    arg0separatorVARIABLE_NAME_MISMATCH
    1
    IRubyObject line = gets(context, separator);
    2
    if (!result.isNil())
    2
    if (!result.isNil())
    2
    if (line.isNil())
    Differences
    Expression1Expression2Difference
    !result.isNil()line.isNil()TYPE_COMPATIBLE_REPLACEMENT
    Preondition Violations
    Expression !result.isNil() cannot be parameterized, because it has dependencies to/from statements that will be extracted
    Expression line.isNil() cannot be parameterized, because it has dependencies to/from statements that will be extracted
    2
    if (line.isNil())
                                                                                            
    3
    throw context.getRuntime().newEOFError();
    Preondition Violations
    Unmatched throw context.getRuntime().newEOFError();
    3
    throw context.getRuntime().newEOFError();
    3
    op_aset(context, arg0, RubyString.newEmptyString(context.getRuntime()));
                                                                                                                                                      
    4
    return result;
    4
    return result;
    4
    return line;
    Differences
    Expression1Expression2Difference
    resultlineVARIABLE_NAME_MISMATCH
    4
    return line;
    Precondition Violations (3)
    Row Violation
    1Expression !result.isNil() cannot be parameterized, because it has dependencies to/from statements that will be extracted
    2Expression line.isNil() cannot be parameterized, because it has dependencies to/from statements that will be extracted
    3Unmatched throw context.getRuntime().newEOFError();