flex

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  • Identifier : flex
  • Depends : m4
  • Updated Date : 01/05/2021 00:27
  • Added Date : 27/11/2020 00:20
  • Description

    fast lexical analyzer generator Flex is a tool for generating scanners: programs which recognized lexical patterns in text. It reads the given input files for a description of a scanner to generate. The description is in the form of pairs of regular expressions and C code, called rules. Flex generates as output a C source file, lex.yy.c, which defines a routine yylex(). This file is compiled and linked with the -lfl library to produce an executable. When the executable is run, it analyzes its input for occurrences of the regular expressions. Whenever it finds one, it executes the corresponding C code.


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