|
|
Influence of Code Copying on the Quality of a Software Project
Chovanec, Zdeněk ; Rychlý, Marek (referee) ; Křivka, Zbyněk (advisor)
This work delves into the field of code clone detection, focusing on Python programming language. We are interested in finding Stack Overflow snippets in real projects. The main goal of this work is to evaluate the influence of copy-and-paste programming on the overall quality of a software project. The NiCad clone detector is used to detect similar code fragments. Additionally, modification of this tool is presented in order to improve the detection process. Code quality is assessed by the volume of duplicate code and by the number of reported issues. The impact is evaluated on a sample of open-source projects hosted on GitHub. We perform a series of statistical hypothesis tests and conclude that there is a~correlation between source code quality and the presence of Stack Overflow snippet in the code base.
|
|
|
Syntax-driven duplicate-code detection
Saksa, Jakub ; Bednárek, David (advisor) ; Kopecký, Michal (referee)
Duplicate code occurs in source files for different reasons. In many cases the motivation for copying the code is laziness of a programmer, or an attempt to use an alien source code. Over the years, multiple methods for detection of the duplicate source code have been developed. Approaches vary in the ways they analyze the code, focusing on different representations of the program. Methods based on the analysis of the syntactic properties of the source code often use abstract syntax trees. By examining the tree representation instead of the textual representation of the code, these methods are able to detect duplicate code that underwent formatting changes as well as changes to the names of identifiers. Duplicate code fragments are discovered by identifying the subtrees of the same shape. After the suspicious parts of the tree are identified, further examination of AST properties determines to what extent the code was copied. In this work we develop a system for duplicate code detection based on AST comparison.
|
|
|
Influence of Code Copying on the Quality of a Software Project
Chovanec, Zdeněk ; Rychlý, Marek (referee) ; Křivka, Zbyněk (advisor)
This work delves into the field of code clone detection, focusing on Python programming language. We are interested in finding Stack Overflow snippets in real projects. The main goal of this work is to evaluate the influence of copy-and-paste programming on the overall quality of a software project. The NiCad clone detector is used to detect similar code fragments. Additionally, modification of this tool is presented in order to improve the detection process. Code quality is assessed by the volume of duplicate code and by the number of reported issues. The impact is evaluated on a sample of open-source projects hosted on GitHub. We perform a series of statistical hypothesis tests and conclude that there is a~correlation between source code quality and the presence of Stack Overflow snippet in the code base.
|
guest ::
