RE/flex is the fast lexical analyzer generator with full Unicode support, indent/nodent/dedent anchors, lazy quantifiers, word boundaries, and many other modern features. Supports Flex lexer specification syntax and is compatible with Bison/Yacc parsers. Generates reusable source code that is easy to understand. Supports fast scanning of UTF-8/16/32 files, strings, and streams. The reflex scanner generator tool generates clean lexer class code that is thread-safe. Generates Graphviz files to visualize state machine DFAs. RE/flex also offers a collection of class templates to wrap C++ regex engines in a unified API for scanning and searching large data sources.
minor feature: Released 2.1.0Added Bison complete locations filename member access; added example Mini C compiler `minic` using RE/flex scanner with Bison 3.2 C++ complete locations, compiles C-like source code to Java bytecode (class files); added fast fuzzy (approximate) regex matcher `reflex::FuzzyMatcher` derived from `reflex::Matcher`.