Quex is ...

... a tool to generate lexical analyzers. A lexical analyzer is a program that transforms a stream of characters into a stream of 'atomic chunks of meaning', so called tokens.

Quex is licenced under MIT License.

Quex does ...

• generate directly coded lexical analyzers, rather than table based engines.
• respond to queries on Unicode properties and regular expressions on the command line.
• generate state transition graphs of the generated engines.

Quex has ...

• Many examples.
• Modes that can be inherited and mode transitions that can be controlled.
• Line and column number counting as part of the generated engine.
• Include stacks for include file management.
• Support for indentation based analysis (INDENT, DEDENT, NODENT tokens).
• Path and Template compression for minimal code size.
• Two token passing strategies: 'queue' and 'single token'.
• Support for customized token types.
• Event handlers for fine grained control over analyzer actions.
• Fuzzy matching operators based on edit distances (e.g. Levenshtein distance).
• Buffer management providing tell&seek based on character indices even with dynamic size character codings (e.g. UTF-8, UTF-16).