文件名称:yufafenxiqi
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语法分析器可选择LL1分析法、算符优先分析法、LR分析法之一,实现如下表达式文法的语法分析器:
(1)E→E+T | E-T | T
(2)T→T*F | T/F | F
(3)F→P^F | P
(4)P→(E) | i
-Parser can choose the LL1 analysis, the operator first analytic method, one of the LR analysis, the following expression grammar parser: (1) E → E+T | ET | T (2) T → T* F | T/F | F (3) F → P ^ F | P (4) P → (E) | i
(1)E→E+T | E-T | T
(2)T→T*F | T/F | F
(3)F→P^F | P
(4)P→(E) | i
-Parser can choose the LL1 analysis, the operator first analytic method, one of the LR analysis, the following expression grammar parser: (1) E → E+T | ET | T (2) T → T* F | T/F | F (3) F → P ^ F | P (4) P → (E) | i
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