Redundant variable and redundant method detection method and system based on abstract syntax tree

Abstract

The invention provides a redundant variable and redundant method detection method and system based on an abstract syntax tree. The method comprises the following steps of: analyzing a java source file by using an abstract syntax tree technology, generating a corresponding variable array and a method array in an analysis process, and detecting a redundant variable and a redundant method through a relation dependence array of the variable, a calling variable array of the method and an unmatched character string array, executing deletion operation on the detected redundant variables and redundant methods. Through the method and the system, all redundant variables and redundant methods can be output by inputting the java source file containing the main method, and the detected redundant variables and redundant methods can be automatically deleted. According to the method, artificial judgment of the redundancy variable and the redundancy method is not required, and the redundancy variable and the redundancy method can be deleted under the condition that the specific positions of the redundancy variable and the redundancy method are not known, so that a good solution is provided for detection and deletion of the redundancy variable and the redundancy method.

Description

technical field [0001] The invention belongs to the field of computers, and in particular relates to a detection method and a detection system of redundant codes in software development. Background technique [0002] In the current software development process, development methods such as multi-person development and software reuse have become common means to speed up software development, so many repetitive and redundant codes are usually accumulated during the development process. On the one hand, these codes reduce the readability of the code, on the other hand, there may be software loopholes and security risks. How to detect and eliminate repetitive and redundant codes in the source code has become an inevitable problem in the software development process. Difficulties that personnel urgently need to solve. Although many redundant code detection and analysis tools have been produced, most of the tools are not effective in detecting redundant code, or run for too long a...

AI Technical Summary

Problems solved by technology

On the one hand, these codes reduce the readability of the code, on the other hand, there may be software loopholes and security risks. How to detect and eliminate repetitive and redundant codes in the source code has become an inevitable problem in the software development process. Difficulties that personnel need to solve urgently

Although many redundant code detection and analysis tools have been produced, most of the tools are not effective in detecting redundant code, or run for too long and are inefficient

[0003] Redundant variables and redundant methods are part of redundant code and occupy most of them. It is often because the variable or method is defined first, but it is not used in the end, which inevitably reduces the execution efficiency of the code. , so how to detect and delete redundant variables and redundant methods is also a difficult problem to be solved by researchers

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