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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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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.
In computer science, a compiler-compiler or compiler generator is a programming tool that creates a parser, interpreter, or compiler from some form of formal description of a programming language and machine. The most common type of compiler-compiler is called a parser generator. [1] It handles only syntactic analysis.
An LR(1) parser can handle many but not all common grammars. It is usually possible to manually modify a grammar so that it fits the limitations of LR(1) parsing and the generator tool. The grammar for an LR parser must be unambiguous itself, or must be augmented by tie-breaking precedence rules. This means there is only one correct way to ...
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The Go programming language (GC) used Bison, but switched to a hand-written scanner and parser in version 1.5. [15] LilyPond requires Bison to generate its parser. [16] MySQL [17] GNU Octave uses a Bison-generated parser. [18] Perl 5 uses a Bison-generated parser starting in 5.10. [19] The PHP programming language (Zend Parser). PostgreSQL [20]