Flex is a tool for generating lexical analyzers, also known as scanners or tokenizers, that is often used in programming language implementation and other text processing tasks. It takes a specification file that defines regular expressions and corresponding actions, and generates a C program that can read input text and identify tokens based on the patterns defined in the specification.
The Flex lexical analyzer operates by reading input characters and applying a set of regular expressions to determine the longest match that can be found at the current position in the input. When a match is found, the corresponding action is executed, which typically involves returning a token to the parser or performing some other processing step.
Website: https://github.com/westes/flex
Port: https://github.com/SerenityOS/serenity/tree/master/Ports/flex
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Port icon has the following license: Attribution 4.0 International (CC BY 4.0)
