Lexical Analysis

If speed is needed, the Line Handler and Lexical Analyzer can be coded in assembly language.

The Lexical Analyzer does the following:

• Reads input characters.

• Groups characters into meaningful units or ``words'', producing data structures called tokens.

• Converts units to internal form, e.g. converts numbers to machine binary form.

• Serves as a front end for and provides input to the Parser.

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