if (null != requiredImplementationVersion) { if (null == implementationVersion || !isCompatible(implementationVersion, requiredImplementationVersion)) { return REQUIRE_IMPLEMENTATION_UPGRADE; } }
if (null != requiredSpecificationVersion) { if (null == specificationVersion || !isCompatible(specificationVersion, requiredSpecificationVersion)) { return REQUIRE_SPECIFICATION_UPGRADE; } }
Clone fragments detected by clone detection tool
File path: /apache-ant-1.7.0/src/org/apache/tools/ant/taskdefs/optional/extension/Extension.java File path: /apache-ant-1.7.0/src/org/apache/tools/ant/taskdefs/optional/extension/Extension.java
Method name: Compatibility getCompatibilityWith(Extension) Method name: Compatibility getCompatibilityWith(Extension)
Number of AST nodes: 3 Number of AST nodes: 3
1
if (null != requiredImplementationVersion) {
1
if (null != requiredSpecificationVersion) {
2
            if (null == implementationVersion
2
            if (null == specificationVersion
3
                || !isCompatible(implementationVersion, requiredImplementationVersion)) {
3
                || !isCompatible(specificationVersion, requiredSpecificationVersion)) {
4
                return REQUIRE_IMPLEMENTATION_UPGRADE;
4
                return REQUIRE_SPECIFICATION_UPGRADE;
5
            }
5
            }
6
        }
6
        }
Summary
Number of common nesting structure subtrees1
Number of refactorable cases1
Number of non-refactorable cases0
Time elapsed for finding largest common nesting structure subtrees (ms)0.2
Clones locationClones are in the same method
Number of node comparisons5
  1. {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)0.5
    Clone typeType 2
    Mapped Statements
    ID Statement ID Statement
    12
    if (null != requiredImplementationVersion)
    12
    if (null != requiredImplementationVersion)
    4
    if (null != requiredSpecificationVersion)
    Differences
    Expression1Expression2Difference
    requiredImplementationVersionrequiredSpecificationVersionVARIABLE_NAME_MISMATCH
    4
    if (null != requiredSpecificationVersion)
    13
    if (null == implementationVersion || !isCompatible(implementationVersion, requiredImplementationVersion))
    13
    if (null == implementationVersion || !isCompatible(implementationVersion, requiredImplementationVersion))
    5
    if (null == specificationVersion || !isCompatible(specificationVersion, requiredSpecificationVersion))
    Differences
    Expression1Expression2Difference
    implementationVersionspecificationVersionVARIABLE_NAME_MISMATCH
    implementationVersionspecificationVersionVARIABLE_NAME_MISMATCH
    requiredImplementationVersionrequiredSpecificationVersionVARIABLE_NAME_MISMATCH
    5
    if (null == specificationVersion || !isCompatible(specificationVersion, requiredSpecificationVersion))
    14
    return REQUIRE_IMPLEMENTATION_UPGRADE;
    14
    return REQUIRE_IMPLEMENTATION_UPGRADE;
    6
    return REQUIRE_SPECIFICATION_UPGRADE;
    Differences
    Expression1Expression2Difference
    REQUIRE_IMPLEMENTATION_UPGRADEREQUIRE_SPECIFICATION_UPGRADEVARIABLE_NAME_MISMATCH
    6
    return REQUIRE_SPECIFICATION_UPGRADE;
    Precondition Violations (0)
    Row Violation