JavaTransformer

A tool to apply program transformations on Java (*.java) methods for generating semantic-preserving transformed programs.

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Used Version(s):

• openjdk 1.8.0_222
• javaparser 3.24.4

JavaTransformer.jar:

• Create Jar file with Maven:

$ mvn clean compile assembly:single
# Output: target/jar/JavaTransformer.jar

• Create Jar file with Ant:

$ mvn dependency:copy-dependencies
$ ant jar
# Output: build/jar/JavaTransformer.jar

• Given input and output path, execute jar:

  # input_path  = Input directory to the original programs.
  # output_path = Output directory to the transformed programs.
  $ java -jar JavaTransformer.jar "input_path" "output_path"
  

  Note:

  The scope of transformation is at the method level, so each (*.java) file should contain only a single method.
  To modify the scope, first check getParseUnit for CompilationUnit.
  Or, convert java files into single method-only files using JavaMethodExtractor before applying transformation.

Transformations:

• BooleanExchange
• LogStatement
• LoopExchange
• PermuteStatement
• ReorderCondition
• SwitchToIf
• TryCatch
• UnusedStatement
• VariableRenaming

References:

• Testing Neural Program Analyzers [Paper] [GitHub]
• On the generalizability of Neural Program Models with respect to semantic-preserving program transformations [Paper] [GitHub]
• JavaParser: https://github.com/javaparser/javaparser