Introduction - If you have any usage issues, please Google them yourself
1. The experiment was to design a LR parser, the realization of the analysis of the expression language, better understanding of the LR parsing method to understand the basic idea of the master LR parser design and implementation of the basic method. 2. Experiment called for the establishment of grammar and LR analysis table that the data structure, design and realization of a LALR (1) of the analyzer, lexical analysis of source code generated by the binary-type code flow analysis, if the input strings is the definition of grammar sentence is the output " yes" , otherwise output " no." 3. Experimental (1) grammar description and LALR (1) Analysis of the expression language described in Table G of the grammar are as follows: