我想通过在Jison中定义一种非常简单的语言(JavaScript解析器)来解析解析的窍门。它接受与野牛相同/非常类似的语法。 这里是我的语法: %token INT TRUE FALSE WHILE DO IF THEN ELSE LOCATION ASSIGN EOF DEREF
%left "+"
%left ">="
/* Define Start Production */
所以我用我的语法有可怕的移位/减少错误。这里有一个最小的测试用例: %token PLUS MINUS TIMES DIVIDE NUMBER
%token EQUAL NEQUAL GREATER LESS NOT
%left EQUAL NEQUAL
%left GREATER LESS
%left PLUS MINUS
%left TIMES DIVIDE
%left UMIN
我尝试了下面的yacc码和m接收移位/减少错误。我敢新的这 The Purpose of the code is to prepare the syntax for if - else with logical operators also incorporated %{
#include<stdio.h>
#include"lex.yy.c"