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  2. Comparison of regular expression engines - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_regular...

    List of regular expression libraries. FPGA accelerated >100 Gbit/s regex engine for cybersecurity, financial, e-commerce industries. hardware-accelerated search acceleration using RegEx available for ASIC, FPGA and cloud. Enables massively parallel content processing at ultra-high speeds. ^ Formerly called Regex++.

  3. re2c - Wikipedia

    en.wikipedia.org/wiki/Re2c

    re2c is a free and open-source lexer generator for C, C++, Go, and Rust.It compiles declarative regular expression specifications to deterministic finite automata.Originally written by Peter Bumbulis and described in his paper, [1] re2c was put in public domain and has been since maintained by volunteers. [3]

  4. Regular expression - Wikipedia

    en.wikipedia.org/wiki/Regular_expression

    A regular expression (shortened as regex or regexp), [1] sometimes referred to as rational expression, [2][3] is a sequence of characters that specifies a match pattern in text. Usually such patterns are used by string-searching algorithms for "find" or "find and replace" operations on strings, or for input validation.

  5. Perl Compatible Regular Expressions - Wikipedia

    en.wikipedia.org/wiki/Perl_Compatible_Regular...

    Website. pcre.org. Perl Compatible Regular Expressions (PCRE) is a library written in C, which implements a regular expression engine, inspired by the capabilities of the Perl programming language. Philip Hazel started writing PCRE in summer 1997. [3] PCRE's syntax is much more powerful and flexible than either of the POSIX regular expression ...

  6. Comparison of parser generators - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_parser...

    To do so technically would require a more sophisticated grammar, like a Chomsky Type 1 grammar, also termed a context-sensitive grammar. However, parser generators for context-free grammars often support the ability for user-written code to introduce limited amounts of context-sensitivity. (For example, upon encountering a variable declaration ...

  7. RE2 (software) - Wikipedia

    en.wikipedia.org/wiki/RE2_(software)

    RE2 (software) RE2 is a software library which implements a regular expression engine via finite-state machines using automata theory, in contrast to almost all other regular expression libraries, which use backtracking implementations. It provides a C++ interface. RE2 was implemented and used by Google.

  8. Thompson's construction - Wikipedia

    en.wikipedia.org/wiki/Thompson's_construction

    Thompson's construction. In computer science, Thompson's construction algorithm, also called the McNaughton–Yamada–Thompson algorithm, [1] is a method of transforming a regular expression into an equivalent nondeterministic finite automaton (NFA). [2] This NFA can be used to match strings against the regular expression.

  9. Oniguruma - Wikipedia

    en.wikipedia.org/wiki/Oniguruma

    Oniguruma. Oniguruma (鬼車) is a free and open-source regular expression library that supports a variety of character encodings written by K. Kosako. The Ruby programming language, in version 1.9, as well as PHP 's multi-byte string module (since PHP5), use Oniguruma as their regular expression engine. [2] It is also used in products such as ...