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The first version of Monarch was released in 1990 for DOS with 'Monarch for Windows' released in 1994. [1] The latest release is version 15. Monarch was originally developed by Math Strategies for Personics Corporation. The software is published by Datawatch Corporation, which was acquired by Altair Engineering in 2018.
Version 1.0 was released on June 10, 2008 [79] and incorporates the changes made to the Office Open XML specification made during the current ISO/IEC standardization process. [80] Version 2 of the Open XML SDK supports validating Office Open XML documents against the Office Open XML schema, as well as searching in Office Open XML documents. [80]
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Flex (fast lexical analyzer generator) is a free and open-source software alternative to lex. [2] It is a computer program that generates lexical analyzers (also known as "scanners" or "lexers").
Berkeley Yacc (byacc) is a Unix parser generator designed to be compatible with Yacc.It was originally written by Robert Corbett and released in 1989. [3] Due to its liberal license and because it was faster than the AT&T Yacc, it quickly became the most popular version of Yacc. [4]
Parser generators use a formal grammar to parse an input stream. It is typically preferable to have a parser, one generated by Yacc for instance, accept a stream of tokens (a "token-stream") as input, rather than having to process a stream of characters (a "character-stream") directly. Lex is often used to produce such a token-stream.
Yacc (Yet Another Compiler-Compiler) is a computer program for the Unix operating system developed by Stephen C. Johnson.It is a lookahead left-to-right rightmost derivation (LALR) parser generator, generating a LALR parser (the part of a compiler that tries to make syntactic sense of the source code) based on a formal grammar, written in a notation similar to Backus–Naur form (BNF). [1]
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, user-written code could save the name and type of the variable into an external data structure, so that these could be checked against ...