Lexical Analysis - Scanner



A scanner reads a source file (backwards or forwards) and returns one token at a time.

  • Lexical Scanner that returns token are known as lexer.
  • Low level scanner that works one character at a time are the foundation of lexer. Optionally, they can and keep track of which line number and character is currently being read.

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What is a Lexer ? known also as Tokenizer or Scanner - Lexical Analysis

Lexer are also known as: * Lexical analyzer * Lexical Tokenizer * Lexical Scanner Consider the following expression: A lexer will tokenized it in the following symbol table: Token Lexeme ...

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