if (proxyExtenders == null) { proxyExtenders = new ArrayList<IRubyObject>(); } proxyExtenders.add(extender);
if (blockingThreads == null) { blockingThreads = new ArrayList<RubyThread>(1); } blockingThreads.add(thread);
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/RubyIO.java
Method name: void addProxyExtender(IRubyObject) Method name: void addBlockingThread(RubyThread)
Number of AST nodes: 3 Number of AST nodes: 3
1
if (proxyExtenders == null) {
1
if (blockingThreads == null) {
2
                    proxyExtenders = new ArrayList<IRubyObject>();
2
            blockingThreads = new ArrayList<RubyThread>(1);
3
                }
3
        }
4
                proxyExtenders.add(extender);
4
        blockingThreads.add(thread);
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 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)0.8
    Clone typeType 2
    Mapped Statements
    ID Statement ID Statement
    6
    if (proxyExtenders == null)
    6
    if (proxyExtenders == null)
    1
    if (blockingThreads == null)
    Differences
    Expression1Expression2Difference
    proxyExtendersblockingThreadsVARIABLE_NAME_MISMATCH
    java.util.ArrayListjava.util.ListVARIABLE_TYPE_MISMATCH
    Preondition Violations
    Type java.util.ArrayList<org.jruby.runtime.builtin.IRubyObject> of variable proxyExtenders does not match with type java.util.List<org.jruby.RubyThread> of variable blockingThreads
    • Make classes java.util.ArrayList and java.util.List extend a common superclass
    1
    if (blockingThreads == null)
                                                                                                    
    2
    blockingThreads = new ArrayList<RubyThread>(1);
    Preondition Violations
    Unmatched statement blockingThreads=new ArrayList<RubyThread>(1); cannot be moved before or after the extracted code, because it has dependencies to/from statements that will be extracted
    2
    blockingThreads = new ArrayList<RubyThread>(1);
    7
    proxyExtenders = new ArrayList<IRubyObject>();
    7
    proxyExtenders = new ArrayList<IRubyObject>();
    Preondition Violations
    Unmatched statement proxyExtenders=new ArrayList<IRubyObject>(); cannot be moved before or after the extracted code, because it has dependencies to/from statements that will be extracted
                                                                                                  
    8
    proxyExtenders.add(extender);
    8
    proxyExtenders.add(extender);
    3
    blockingThreads.add(thread);
    Differences
    Expression1Expression2Difference
    extenderthreadVARIABLE_NAME_MISMATCH
    org.jruby.runtime.builtin.IRubyObjectorg.jruby.RubyThreadVARIABLE_TYPE_MISMATCH
    proxyExtendersblockingThreadsVARIABLE_NAME_MISMATCH
    java.util.ArrayListjava.util.ListVARIABLE_TYPE_MISMATCH
    Preondition Violations
    Type org.jruby.runtime.builtin.IRubyObject of variable extender does not match with type org.jruby.RubyThread of variable thread
    • Make classes org.jruby.runtime.builtin.IRubyObject and org.jruby.RubyThread extend a common superclass
    Type java.util.ArrayList<org.jruby.runtime.builtin.IRubyObject> of variable proxyExtenders does not match with type java.util.List<org.jruby.RubyThread> of variable blockingThreads
    • Make classes java.util.ArrayList and java.util.List extend a common superclass
    3
    blockingThreads.add(thread);
    Precondition Violations (5)
    Row Violation
    1Type java.util.ArrayList<org.jruby.runtime.builtin.IRubyObject> of variable proxyExtenders does not match with type java.util.List<org.jruby.RubyThread> of variable blockingThreads
    2Unmatched statement blockingThreads=new ArrayList<RubyThread>(1); cannot be moved before or after the extracted code, because it has dependencies to/from statements that will be extracted
    3Unmatched statement proxyExtenders=new ArrayList<IRubyObject>(); cannot be moved before or after the extracted code, because it has dependencies to/from statements that will be extracted
    4Type org.jruby.runtime.builtin.IRubyObject of variable extender does not match with type org.jruby.RubyThread of variable thread
    5Type java.util.ArrayList<org.jruby.runtime.builtin.IRubyObject> of variable proxyExtenders does not match with type java.util.List<org.jruby.RubyThread> of variable blockingThreads