Lex compiler - PowerPoint PPT Presentation

Using Scanner Generator Lex

Using Scanner Generator Lex. By J. H. Wang May 10, 2011. Creating a Lexical Analyzer with Lex. Lex compiler. Lex source program lex.l. lex.yy.c. C compiler. lex.yy.c. a.out. a.out (The scanner). Input stream. Sequence of tokens. To generate the scanner:

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Lex Compiler

Lex Source Program. Lex Compiler. lex.yy.cc. lex.yy.cc. C Compiler. executable file. Input Stream. Exectuable File. Sequence of Tokens. Lex Source Program. Table of regular expressions and corresponding program fragments. Format:. { definitions} %% {rules} %% {user subroutines}.

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488 views • 6 slides

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