Java中异常结构的语法分析研究

Research on Syntax Analysis of Exception Handling in Java

为了提高Java的运行速度,人们对Java编译器进行了深入研究,发现异常结构对编译器的语法分析、语义分析及代码优化都有一定的影响。为了降低异常结构带来的不利影响,文中针对Java中的异常结构提出了一种语法分析方法。该方法采用G树作为语法分析树,较传统的语法分析树的时空效率有明显提高,不仅提高了语法分析的效率,而且提高了语义分析的效率。

In order to improve the speed of executing in Java,the researchers study deeply on compiler of Java,and find that the construction of exception has affect to syntax analysis,semantic analysis and code optimization in compiler.To supplement the influence,suppose a method of syntax analysis of exception in this paper.The method adopts G tree in place of parse tree,so improves the efficiency of syntax analysis and semantics analysis.