Abstract: Methods and instructions embodied in non-transitory media for the detection of plagiarism in software code implementing a design pattern are described. Steps involved may include receiving input comprising the software code at least one design pattern implemented in the software code, identifying at least one function call to a function in a class implementing the design pattern in the software code, and creating a representation of the called function in the class containing the function call, wherein the function call and the function to which it corresponds is characteristic of the design pattern; and where the created representation implements program logic associated with at least one function implementing the design pattern, including the called function. The function call may be replaced with the representation of the called function. Additionally, the modified code may then be compared with one or more target files.

Abstract: Methods and instructions embodied in non-transitory media for the detection of plagiarism in software code implementing a design pattern are described. Steps involved may include receiving input comprising the software code at least one design pattern implemented in the software code, identifying at least one function call to a function in a class implementing the design pattern in the software code, and creating a representation of the called function in the class containing the function call, wherein the function call and the function to which it corresponds is characteristic of the design pattern; and where the created representation implements program logic associated with at least one function implementing the design pattern, including the called function. The function call may be replaced with the representation of the called function. Additionally, the modified code may then be compared with one or more target files.

Abstract: A non-transitory computer readable medium, plagiarism detection device, and method which generate an abstract syntax tree from software code in an computer readable source file, the software code comprising at least one class; identifies one or more method invocations in the source file by means of the abstract syntax tree, and resolves each of the one or more method invocations in the at least one class by acquiring source code associated with each of the one or more invoked methods, where acquiring source code involves identifying at least one node of the abstract syntax tree with which the source code is associated and copying the source code therein and replacing the one or more method invocations in the source file with the copied source code. The source file may be compared with predetermined data, in some embodiments.