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Lemon is a parser generator, maintained as part of the SQLite project, that generates a look-ahead LR parser (LALR parser) in the programming language C from an input context-free grammar. The generator is quite simple, implemented in one C source file with another file used as a template for output. Lexical analysis is performed externally.
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 ...
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re2c is a free and open-source lexer generator for C, C++, D, Go, Haskell, Java, JavaScript, OCaml, Python, Rust, V and Zig. It compiles declarative regular expression specifications to deterministic finite automata .
Just had my edit trying to fix things undone - but the current state is inconsistent still. Carburetta is a C/C++ scannner *and* parser generator (so both), ranks first for "C scanner generator", ranks 4th for "C parser generator" (above bison and lemon, but below "PackCC"), and similar, but lower, for C++ and so on.
Depending upon the type of parser that should be generated, these routines may construct a parse tree (or abstract syntax tree), or generate executable code directly. One of the earliest (1964), surprisingly powerful, versions of compiler-compilers is META II , which accepted an analytical grammar with output facilities that produce stack ...
Dwayne Richard Hipp (born April 9, 1961) is an American software developer and the primary author of SQLite as well as the Fossil SCM. [1] [2] He also authored the Lemon parser generator, and CVSTrac; the latter became the inspiration for Trac.
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