简单优先分析 文法按一定的法的基本思想是对一个文法按一定的原则求出该文法所有符号包括终结符和非终结符之间的优先关系按照这种关系确定规约过程中的句柄，它的规约过程实际上是规范规约。-First analysis of a simple grammar, according to a certain law, the basic idea is a principle of grammar, according to a certain find all the symbols of the gra