158-2-131

try { Commandline c = (Commandline) super.clone(); c.arguments = (Vector) arguments.clone(); return c; } catch (CloneNotSupportedException e) { throw new BuildException(e); }
try { messageDigest = MessageDigest.getInstance(algorithm); } catch (NoSuchAlgorithmException noalgo) { throw new BuildException(noalgo, getLocation()); }

Clone fragments detected by clone detection tool
File path: /apache-ant-1.7.0/src/org/apache/tools/ant/types/Commandline.java |  | File path: /apache-ant-1.7.0/src/org/apache/tools/ant/taskdefs/Checksum.java
Method name: `Object clone()` |  | Method name: `boolean validateAndExecute()`
Number of AST nodes: 4 |  | Number of AST nodes: 2

1

    try {↵

1

    try {↵

2

                Commandline c = (Commandline) super.clone();↵

2

                ↵

3

                c.arguments = (Vector) arguments.clone();↵

4

                return c;↵

3

        messageDigest = MessageDigest.getInstance(algorithm);↵

5

            } catch (CloneNotSupportedException e) {↵

4

                } catch (NoSu↵

5

    chAlgorithmException noalgo) {↵

6

                throw new BuildException(e);↵

6

                    throw new BuildException(↵

7

    noalgo, getLocation());↵

7

            }

8

                }

See real code fragment |  | See real code fragment

Summary
Number of common nesting structure subtrees | 1
Number of refactorable cases | 0
Number of non-refactorable cases | 1
Time elapsed for finding largest common nesting structure subtrees (ms) | 0.2
Clones location | Clones are in different classes
Number of node comparisons | 8

1. {Non-refactorable}

   Mapping Summary
   Number of mapped statements | 1
   Number of unmapped statements in the first code fragment | 3
   Number of unmapped statements in the second code fragment | 1
   Time elapsed for statement mapping (ms) | 5.6
   Clone type | Type 3

   Mapped Statements
   ID | Statement |  | ID | Statement
   --- | --- | --- | --- | ---

   1

       try

   1 | try
   32 | try

   Differences
   Expression1 | Expression2 | Difference
   --- | --- | ---
   java.lang.CloneNotSupportedException | java.security.NoSuchAlgorithmException | SUBCLASS_TYPE_MISMATCH
   e | noalgo | VARIABLE_NAME_MISMATCH
   java.lang.CloneNotSupportedException | java.security.NoSuchAlgorithmException | SUBCLASS_TYPE_MISMATCH
   new BuildException(e) | new BuildException(noalgo,getLocation()) | ARGUMENT_NUMBER_MISMATCH

   32

       try

   2

       Commandline c = (Commandline)super.clone();

   2 | Commandline c = (Commandline)super.clone();

   Preondition Violations
   Unmatched statement Commandline c=(Commandline)super.clone(); cannot be moved before or after the extracted code, because it throws exception(s) that should be caught by a try block that will be extracted

   3

       c.arguments = (Vector)arguments.clone();

   4

       return c;

   4 | return c;

   Preondition Violations
   Unmatched return c;

   33 | messageDigest = MessageDigest.getInstance(algorithm);

   Preondition Violations
   Unmatched statement messageDigest=MessageDigest.getInstance(algorithm); cannot be moved before or after the extracted code, because it throws exception(s) that should be caught by a try block that will be extracted

   33

       messageDigest = MessageDigest.getInstance(algorithm);

   Precondition Violations (3)
   Row | Violation
   --- | ---
   1 | Unmatched statement Commandline c=(Commandline)super.clone(); cannot be moved before or after the extracted code, because it throws exception(s) that should be caught by a try block that will be extracted
   2 | Unmatched return c;
   3 | Unmatched statement messageDigest=MessageDigest.getInstance(algorithm); cannot be moved before or after the extracted code, because it throws exception(s) that should be caught by a try block that will be extracted