The examples with Bison require the installation of Bison.

Examples with RE/flex C++ lexer methods

• minic.l, minic.y, minic.hpp, and minicdemo.c Mini C compiler, using Bison >3.2 C++ complete symbols and locations, generates Java bytecode in class files
• lua.l, lua.y, lua.hpp, lua.md, lua.txt, and luademo.lua transpiler of Lua 5.3 programs to Lisp, using Bison >3.2 C++ complete symbols and locations
• braille.l a braille translator, inspired by the re2c example but properly done and extended to make it usable
• ptokens.l and pdefs.l a Python source tokenizer
• calc.l and calc.y calculator with Bison 3.2 bison-bridge parser, supports Unicode identifier variables, resolves input errors
• csv.l scanner to parse CSV rows from a file into a C++ vector
• yaml.l YAML 1.2 parser and writer
• indent1.l indentation detection and reformatting example, basic
• indent2.l indentation detection and reformatting example, advanced with start conditions
• unicode.l a very simple Unicode word matcher to demonstrate Unicode matching
• scanstrings.l demonstrates string and buffer scanning
• mmap.l demonstrates mmap(2) to scan C/C++ source code files fast with RE/flex read-only memory scanning
• gz.l demonstrates scanning zlib-compressed (and uncompressed) C/C++ source code files
• dos.l demonstrates scanning DOS-formatted files with reflex::BufferedInput::dos_streambuf
• fastfind.l demonstrates fast search for patterns in input, rather than scanning the input
• tag.l simple lexer to print out all XML/HTML tags
• tag_lazy.l simple lexer to print XML/HTML tags, uses lazy quants
• tag_lazystates.l lexer to print XML tags, uses lazy quants and states
• tag_unicode.l lexer to print XML tags, uses lazy quants and states, checks UTF-8 validity
• tag_tidy.l lexer to tidy and normalize HTML
• cow.l scanner to convert cows
• cows.l scanner to convert cows, uses word boundary anchors
• moo.l like cows.l but uses a fast search engine generated with option find
• rawk.l fast file search with AWK-like rules, uses options fast and find
• reflexexample3.l example RE/flex scanner adapted from the Flex documentation with C bison
• reflexexample3.lxx example RE/flex scanner adapted from the Flex documentation with C++ bison
• reflexexample4.l example RE/flex scanner adapted from the Flex documentation with C bison-bridge
• reflexexample4.lxx example RE/flex scanner adapted from the Flex documentation with C++ bison-bridge
• reflexexample5.l example RE/flex scanner adapted from the Flex documentation with C bison-bridge
• reflexexample5.lxx example RE/flex scanner adapted from the Flex documentation with C++ bison-bridge
• reflexexample6.l example RE/flex reentrant scanner with state stacks
• reflexexample7.l example RE/flex scanner adapted from the Flex documentation with C bison-locations
• reflexexample7.lxx example RE/flex scanner adapted from the Flex documentation with C++ bison-locations
• reflexexample8.l example RE/flex scanner adapted from the Flex documentation with C bison-bridge and bison-locations
• reflexexample8.lxx example RE/flex scanner adapted from the Flex documentation with C++ bison-bridge and bison-locations
• reflexexample9.lxx example RE/flex scanner with Bison 3.0 %skeleton "lalr1.cc" C++ parser with bison-cc and bison-locations
• reflexexample10.l example RE/flex scanner adapted from the Flex documentation to use multiple buffers
• reflexexample11.lxx example RE/flex scanner with Bison 3.2 C++ bison-complete and bison-locations

Examples with the backward-compatible Flex lexer functions

• json.l JSON parser and writer
• ctokens.l and cdefs.l a C/C++ source tokenizer
• jtokens.l and jdefs.l a Java source tokenizer, meets the official Java Lexical Structure requirements
• readline.l demonstrates scanning with readline(3) interactive input
• yyscanstrings.l demonstrates string and buffer scanning
• echo.l classic interactive scanner to echo input
• wc.l word count example
• wcu.l word count example with Unicode matching (RE/flex only)
• wcpp.l word count example with lexer class variables
• wcwc.l word count example with custom lexer class
• flexexample1.l example taken from the Flex documentation
• flexexample2.l example from http://matt.might.net/articles/standalone-lexers-with-lex
• flexexample3.l example from the Flex documentation with C bison
• flexexample3.lxx example from the Flex documentation with C++ bison
• flexexample4.l example from the Flex documentation with C bison-bridge
• flexexample4.lxx example from the Flex documentation with C++ bison-bridge
• flexexample5.l example from the Flex documentation with C bison-bridge
• flexexample5.lxx example from the Flex documentation with C++ bison-bridge
• flexexample6.l example reentrant scanner with state stacks
• flexexample7.l example from the Flex documentation with C bison-locations
• flexexample7.lxx example from the Flex documentation with C++ bison-locations
• flexexample8.l example from the Flex documentation with C bison-bridge and bison-locations
• flexexample8.lxx example from the Flex documentation with C++ bison-bridge and bison-locations
• flexexample9.lxx example Bison 3.0 %skeleton "lalr1.cc" C++ parser with bison-cc and bison-locations
• flexexample10.l example from the Flex documentation to use multiple buffers
• reflexexample11.lxx example reentrant scanner with Bison 3.2 C++ bison-complete and bison-locations

Regex pattern matching with the easy-to-use RE/flex regex API

• cards.cpp RE/flex regex API demo: matches credit card numbers (uses the fast RE/flex regex matcher)
• cvt2utf demonstrates reflex::Input UTF-8 normalization to convert files to UTF-8/16/32
• fastsearch.cpp demonstrates super fast search with regex patterns compiled to C++ (typically much faster than any grep tool)
• ugrep.cpp file searcher (simple version), fully-featured high-performance version on GitHub
• url_boost.cpp RE/flex regex API demo: capture domain, path, and query keys from URLs (uses the Boost.Regex library)
• url_pcre2.cpp RE/flex regex API demo: capture domain, path, and query keys from URLs (uses the PCRE2 library)