if (proxyExtenders == null) { proxyExtenders = new ArrayList<IRubyObject>(); } proxyExtenders.add(extender);
if (traces == null) { traces = new ArrayList<IRubyObject>(); } traces.add(command);
Clone fragments detected by clone detection tool
File path: /jruby-1.4.0/src/org/jruby/javasupport/JavaClass.java File path: /jruby-1.4.0/src/org/jruby/internal/runtime/GlobalVariable.java
Method name: void addProxyExtender(IRubyObject) Method name: void addTrace(RubyProc)
Number of AST nodes: 3 Number of AST nodes: 3
1
if (proxyExtenders == null) {
1
if (traces == null) {
2
                    proxyExtenders = new ArrayList<IRubyObject>();
2
            traces = new ArrayList<IRubyObject>();
3
                }
3
        }
4
                proxyExtenders.add(extender);
4
        traces.add(command);
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 statements3
    Number of unmapped statements in the first code fragment0
    Number of unmapped statements in the second code fragment0
    Time elapsed for statement mapping (ms)0.8
    Clone typeType 2
    Mapped Statements
    ID Statement ID Statement
    6
    if (proxyExtenders == null)
    6
    if (proxyExtenders == null)
    1
    if (traces == null)
    Differences
    Expression1Expression2Difference
    proxyExtenderstracesVARIABLE_NAME_MISMATCH
    1
    if (traces == null)
    7
    proxyExtenders = new ArrayList<IRubyObject>();
    7
    proxyExtenders = new ArrayList<IRubyObject>();
    2
    traces = new ArrayList<IRubyObject>();
    Differences
    Expression1Expression2Difference
    proxyExtenderstracesVARIABLE_NAME_MISMATCH
    Preondition Violations
    Expression proxyExtenders is a field being modified, and thus it cannot be parameterized
    Expression traces is a field being modified, and thus it cannot be parameterized
    2
    traces = new ArrayList<IRubyObject>();
    8
    proxyExtenders.add(extender);
    8
    proxyExtenders.add(extender);
    3
    traces.add(command);
    Differences
    Expression1Expression2Difference
    extendercommandVARIABLE_NAME_MISMATCH
    org.jruby.runtime.builtin.IRubyObjectorg.jruby.RubyProcVARIABLE_TYPE_MISMATCH
    proxyExtenderstracesVARIABLE_NAME_MISMATCH
    Preondition Violations
    Type org.jruby.runtime.builtin.IRubyObject of variable extender does not match with type org.jruby.RubyProc of variable command
    • Make classes org.jruby.runtime.builtin.IRubyObject and org.jruby.RubyProc extend a common superclass
    Expression proxyExtenders cannot be parameterized, because it has dependencies to/from statements that will be extracted
    Expression traces cannot be parameterized, because it has dependencies to/from statements that will be extracted
    3
    traces.add(command);
    Precondition Violations (5)
    Row Violation
    1Expression proxyExtenders is a field being modified, and thus it cannot be parameterized
    2Expression traces is a field being modified, and thus it cannot be parameterized
    3Type org.jruby.runtime.builtin.IRubyObject of variable extender does not match with type org.jruby.RubyProc of variable command
    4Expression proxyExtenders cannot be parameterized, because it has dependencies to/from statements that will be extracted
    5Expression traces cannot be parameterized, because it has dependencies to/from statements that will be extracted