Java exception propagation static structure extraction method

Abstract

The invention discloses a Java exception propagation static structure extraction method. According to an exception type hierarchical relationship, based on a method calling relationship, an exception throwing and capturing relationship existing a Java exception propagation process is combined, thus the Java exception propagation static structure can be more completely extracted. In order to overcome the difficulty in extraction of a complex hierarchical structure to an exception propagation structure, the Java exception propagation static structure extraction method is used for fusing a system exception type with a user defined exception type to construct a relatively-complete exception type hierarchical structure tree; and on the basis of calling a dependency graph, the Java exception propagation static structure extraction method is used for constructing a software extension dependency graph by associating the exception throwing and capturing relationship with the exception type hierarchical structure. By using an exception type capturing point as an exception propagation structure search starting point, the Java exception propagation structure is extracted by adopting an extraction algorithm based on a depth-first search algorithm and the exception type hierarchical structure tree.

Description

technical field [0001] The invention relates to a static analysis method for software structure based on the Java programming language, in particular to a method for obtaining an abnormal propagation structure in a software system, which belongs to the field of computer software measurement and analysis. Background technique [0002] The diversification and complexity of software system functions have made software robustness one of the main concerns in the industry. At present, researchers have proposed a variety of methods to improve software robustness. The exception handling mechanism is a method provided by modern programming languages ​​for software developers to build a robust system. It separates the normal control flow of the system under abnormal conditions from the control flow that handles the exception. Unfortunately, the analysis of abnormal control flow in a huge system is very difficult. [0003] The concept of exception handling was first proposed by John ...

AI Technical Summary

Problems solved by technology

But in a complex software system, the exception generation and processing process is not necessarily in a localized area

For example, taking a software system constructed in the Java language as an example, the exception handling mechanism of the Java language does not "tightly" connect the exception point and the exception handler, but connects it through the method call stack. Therefore, the exception handling mechanism of the Java language exists Obvious maintenance problem: For a certain type of exception thrown, how to determine the location of the exception handler fragment in the software system

For developers, exception propagation frequently crosses the boundaries of components and is global; and exceptions also jump multiple times on their propagation paths and may be abstracted, which increases the difficulty of analyzing where exceptions are thrown and processed

In addition, the modification of exception propagation requires more cost under the influence of exception handling globality

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