String systemDefault = null; if (p == null) { systemDefault = System.getProperty("ant.regexp.regexpimpl"); } else { systemDefault = p.getProperty("ant.regexp.regexpimpl"); } if (systemDefault != null) { return createRegexpInstance(systemDefault); // XXX should we silently catch possible exceptions and try to // load a different implementation? } Throwable cause = null; try { testAvailability("java.util.regex.Matcher"); return createRegexpInstance("org.apache.tools.ant.util.regexp.Jdk14RegexpRegexp"); } catch (BuildException be) { cause = orCause(cause, be, JavaEnvUtils.getJavaVersionNumber() < 14); } try { testAvailability("org.apache.oro.text.regex.Pattern"); return createRegexpInstance("org.apache.tools.ant.util.regexp.JakartaOroRegexp"); } catch (BuildException be) { cause = orCause(cause, be, true); } try { testAvailability("org.apache.regexp.RE"); return createRegexpInstance("org.apache.tools.ant.util.regexp.JakartaRegexpRegexp"); } catch (BuildException be) { cause = orCause(cause, be, true); } throw new BuildException( "No supported regular expression matcher found" + (cause != null ? ": " + cause : ""), cause);
String systemDefault = null; if (p == null) { systemDefault = System.getProperty(MagicNames.REGEXP_IMPL); } else { systemDefault = p.getProperty(MagicNames.REGEXP_IMPL); } if (systemDefault != null) { return createInstance(systemDefault); // XXX should we silently catch possible exceptions and try to // load a different implementation? } Throwable cause = null; try { testAvailability("java.util.regex.Matcher"); return createInstance("org.apache.tools.ant.util.regexp.Jdk14RegexpMatcher"); } catch (BuildException be) { cause = orCause(cause, be, JavaEnvUtils.getJavaVersionNumber() < 14); } try { testAvailability("org.apache.oro.text.regex.Pattern"); return createInstance("org.apache.tools.ant.util.regexp.JakartaOroMatcher"); } catch (BuildException be) { cause = orCause(cause, be, true); } try { testAvailability("org.apache.regexp.RE"); return createInstance("org.apache.tools.ant.util.regexp.JakartaRegexpMatcher"); } catch (BuildException be) { cause = orCause(cause, be, true); } throw new BuildException( "No supported regular expression matcher found" + (cause != null ? ": " + cause : ""), cause);
Clone fragments detected by clone detection tool
File path: /apache-ant-1.7.0/src/org/apache/tools/ant/util/regexp/RegexpFactory.java File path: /apache-ant-1.7.0/src/org/apache/tools/ant/util/regexp/RegexpMatcherFactory.java
Method name: Regexp newRegexp(Project) Method name: RegexpMatcher newRegexpMatcher(Project)
Number of AST nodes: 17 Number of AST nodes: 17
1
String systemDefault = null;
1
String systemDefault = null;
2
        if (p == null) {
2
        if (p == null) {
3
            systemDefault = System.getProperty("ant.regexp.regexpimpl");
3
            systemDefault = System.getProperty(MagicNames.REGEXP_IMPL);
4
        } else {
4
        } else {
5
            systemDefault = p.getProperty("ant.regexp.regexpimpl");
5
            systemDefault = p.getProperty(MagicNames.REGEXP_IMPL);
6
        }
6
        }
7
        if (systemDefault != null) {
7
        if (systemDefault != null) {
8
            return createRegexpInstance(systemDefault);
8
            return createInstance(systemDefault);
9
            // XXX     should we silently catch possible exceptions and try to
9
            // XXX     should we silently catch possible exceptions and try to
10
            //         load a different implementation?
10
            //         load a different implementation?
11
        }
11
        }
12
        Throwable cause = null;
12
        Throwable cause = null;
13
        try {
13
        try {
14
            testAvailability("java.util.regex.Matcher");
14
            testAvailability("java.util.regex.Matcher");
15
            return createRegexpInstance("org.apache.tools.ant.util.regexp.Jdk14RegexpRegexp");
15
            return createInstance("org.apache.tools.ant.util.regexp.Jdk14RegexpMatcher");
16
        } catch (BuildException be) {
16
        } catch (BuildException be) {
17
            cause = orCause(cause, be, JavaEnvUtils.getJavaVersionNumber() < 14);
17
            cause = orCause(cause, be, JavaEnvUtils.getJavaVersionNumber() < 14);
18
        }
18
        }
19
        try {
19
        try {
20
            testAvailability("org.apache.oro.text.regex.Pattern");
20
            testAvailability("org.apache.oro.text.regex.Pattern");
21
            return createRegexpInstance("org.apache.tools.ant.util.regexp.JakartaOroRegexp");
21
            return createInstance("org.apache.tools.ant.util.regexp.JakartaOroMatcher");
22
        } catch (BuildException be) {
22
        } catch (BuildException be) {
23
            cause = orCause(cause, be, true);
23
            cause = orCause(cause, be, true);
24
        }
24
        }
25
        try {
25
        try {
26
            testAvailability("org.apache.regexp.RE");
26
            testAvailability("org.apache.regexp.RE");
27
            return createRegexpInstance("org.apache.tools.ant.util.regexp.JakartaRegexpRegexp");
27
            return createInstance("org.apache.tools.ant.util.regexp.JakartaRegexpMatcher");
28
        } catch (BuildException be) {
28
        } catch (BuildException be) {
29
            cause = orCause(cause, be, true);
29
            cause = orCause(cause, be, true);
30
        }
30
        }
31
        throw new BuildException(
31
        throw new BuildException(
32
            "No supported regular expression matcher found"
32
            "No supported regular expression matcher found"
33
            + (cause != null ? ": " + cause : ""), cause);
33
            + (cause != null ? ": " + cause : ""), cause);
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)3.4
Clones locationClones are in different classes having the same super class
Number of node comparisons137
  1. {Non-refactorable}
    Mapping Summary
    Number of mapped statements13
    Number of unmapped statements in the first code fragment4
    Number of unmapped statements in the second code fragment4
    Time elapsed for statement mapping (ms)6.2
    Clone typeType 2
    Mapped Statements
    ID Statement ID Statement
    1
    String systemDefault = null;
    1
    String systemDefault = null;
    2
    if (p == null)
    2
    if (p == null)
    3
    systemDefault = System.getProperty("ant.regexp.regexpimpl");
    3
    systemDefault = System.getProperty("ant.regexp.regexpimpl");
    3
    systemDefault = System.getProperty(MagicNames.REGEXP_IMPL);
    Differences
    Expression1Expression2Difference
    "ant.regexp.regexpimpl"MagicNames.REGEXP_IMPLTYPE_COMPATIBLE_REPLACEMENT
    3
    systemDefault = System.getProperty(MagicNames.REGEXP_IMPL);
    else
    else
    4
    systemDefault = p.getProperty("ant.regexp.regexpimpl");
    4
    systemDefault = p.getProperty("ant.regexp.regexpimpl");
    4
    systemDefault = p.getProperty(MagicNames.REGEXP_IMPL);
    Differences
    Expression1Expression2Difference
    "ant.regexp.regexpimpl"MagicNames.REGEXP_IMPLTYPE_COMPATIBLE_REPLACEMENT
    4
    systemDefault = p.getProperty(MagicNames.REGEXP_IMPL);
    5
    if (systemDefault != null)
    5
    if (systemDefault != null)
                                                                                    
    6
    return createInstance(systemDefault);
    Preondition Violations
    Unmatched statement return createInstance(systemDefault); cannot be moved before the extracted code, because it has control dependencies from statements that will be extracted
    Unmatched return createInstance(systemDefault);
    6
    return createInstance(systemDefault);
    6
    return createRegexpInstance(systemDefault);
    6
    return createRegexpInstance(systemDefault);
    Preondition Violations
    Unmatched statement return createRegexpInstance(systemDefault); cannot be moved before the extracted code, because it has control dependencies from statements that will be extracted
    Unmatched return createRegexpInstance(systemDefault);
                                                                                                
    7
    Throwable cause = null;
    7
    Throwable cause = null;
    8
    try
    8
    try
    9
    testAvailability("java.util.regex.Matcher");
    9
    testAvailability("java.util.regex.Matcher");
                                                                                                                                                                      
    10
    return createInstance("org.apache.tools.ant.util.regexp.Jdk14RegexpMatcher");
    Preondition Violations
    Unmatched statement return createInstance("org.apache.tools.ant.util.regexp.Jdk14RegexpMatcher"); 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
    Unmatched return createInstance("org.apache.tools.ant.util.regexp.Jdk14RegexpMatcher");
    10
    return createInstance("org.apache.tools.ant.util.regexp.Jdk14RegexpMatcher");
    10
    return createRegexpInstance("org.apache.tools.ant.util.regexp.Jdk14RegexpRegexp");
    10
    return createRegexpInstance("org.apache.tools.ant.util.regexp.Jdk14RegexpRegexp");
    Preondition Violations
    Unmatched statement return createRegexpInstance("org.apache.tools.ant.util.regexp.Jdk14RegexpRegexp"); 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
    Unmatched return createRegexpInstance("org.apache.tools.ant.util.regexp.Jdk14RegexpRegexp");
                                                                                                                                                                                
    11
    try
    11
    try
    12
    testAvailability("org.apache.oro.text.regex.Pattern");
    12
    testAvailability("org.apache.oro.text.regex.Pattern");
                                                                                                                                                                    
    13
    return createInstance("org.apache.tools.ant.util.regexp.JakartaOroMatcher");
    Preondition Violations
    Unmatched statement return createInstance("org.apache.tools.ant.util.regexp.JakartaOroMatcher"); 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
    Unmatched return createInstance("org.apache.tools.ant.util.regexp.JakartaOroMatcher");
    13
    return createInstance("org.apache.tools.ant.util.regexp.JakartaOroMatcher");
    13
    return createRegexpInstance("org.apache.tools.ant.util.regexp.JakartaOroRegexp");
    13
    return createRegexpInstance("org.apache.tools.ant.util.regexp.JakartaOroRegexp");
    Preondition Violations
    Unmatched statement return createRegexpInstance("org.apache.tools.ant.util.regexp.JakartaOroRegexp"); 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
    Unmatched return createRegexpInstance("org.apache.tools.ant.util.regexp.JakartaOroRegexp");
                                                                                                                                                                              
    14
    try
    14
    try
    15
    testAvailability("org.apache.regexp.RE");
    15
    testAvailability("org.apache.regexp.RE");
                                                                                                                                                                          
    16
    return createInstance("org.apache.tools.ant.util.regexp.JakartaRegexpMatcher");
    Preondition Violations
    Unmatched statement return createInstance("org.apache.tools.ant.util.regexp.JakartaRegexpMatcher"); 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
    Unmatched return createInstance("org.apache.tools.ant.util.regexp.JakartaRegexpMatcher");
    16
    return createInstance("org.apache.tools.ant.util.regexp.JakartaRegexpMatcher");
    16
    return createRegexpInstance("org.apache.tools.ant.util.regexp.JakartaRegexpRegexp");
    16
    return createRegexpInstance("org.apache.tools.ant.util.regexp.JakartaRegexpRegexp");
    Preondition Violations
    Unmatched statement return createRegexpInstance("org.apache.tools.ant.util.regexp.JakartaRegexpRegexp"); 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
    Unmatched return createRegexpInstance("org.apache.tools.ant.util.regexp.JakartaRegexpRegexp");
                                                                                                                                                                                    
    17
    throw new BuildException("No supported regular expression matcher found" + (cause != null ? ": " + cause : ""), cause);
    17
    throw new BuildException("No supported regular expression matcher found" + (cause != null ? ": " + cause : ""), cause);
    Precondition Violations (16)
    Row Violation
    1Unmatched statement return createInstance(systemDefault); cannot be moved before the extracted code, because it has control dependencies from statements that will be extracted
    2Unmatched return createInstance(systemDefault);
    3Unmatched statement return createRegexpInstance(systemDefault); cannot be moved before the extracted code, because it has control dependencies from statements that will be extracted
    4Unmatched return createRegexpInstance(systemDefault);
    5Unmatched statement return createInstance("org.apache.tools.ant.util.regexp.Jdk14RegexpMatcher"); 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
    6Unmatched return createInstance("org.apache.tools.ant.util.regexp.Jdk14RegexpMatcher");
    7Unmatched statement return createRegexpInstance("org.apache.tools.ant.util.regexp.Jdk14RegexpRegexp"); 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
    8Unmatched return createRegexpInstance("org.apache.tools.ant.util.regexp.Jdk14RegexpRegexp");
    9Unmatched statement return createInstance("org.apache.tools.ant.util.regexp.JakartaOroMatcher"); 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
    10Unmatched return createInstance("org.apache.tools.ant.util.regexp.JakartaOroMatcher");
    11Unmatched statement return createRegexpInstance("org.apache.tools.ant.util.regexp.JakartaOroRegexp"); 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
    12Unmatched return createRegexpInstance("org.apache.tools.ant.util.regexp.JakartaOroRegexp");
    13Unmatched statement return createInstance("org.apache.tools.ant.util.regexp.JakartaRegexpMatcher"); 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
    14Unmatched return createInstance("org.apache.tools.ant.util.regexp.JakartaRegexpMatcher");
    15Unmatched statement return createRegexpInstance("org.apache.tools.ant.util.regexp.JakartaRegexpRegexp"); 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
    16Unmatched return createRegexpInstance("org.apache.tools.ant.util.regexp.JakartaRegexpRegexp");