Description: Compiler theory lexical analysis [pilot project following the completion of regular grammars as described in C and Pascal language subset word symbols of lexical analysis procedures. < Identifier> → letters ︱ < identifier> letter ︱ < identifier> Digital < unsigned integer> → digital ︱ < unsigned integer> Digital < single character boundaries operator> → the PPLS ︱- |* | | (|) < two-character delimiter> → < greater than> = ︱ < less than> = ︱ < less than> ︱ < colon> = ︱ < oblique vertical> * < less than> → < < equal to> -> = < greater than> →> < colon> →: → < inclined Vertical> /language reserved words: begin end if then else for do while and or not
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源程序