Parsers and lexical analysers are long and complex components. A software engineer writing an efficient lexical analyser or parser directly has to carefully consider the interactions between the rules.
- Language translation: translate one language to another
- Language creation:
- First, the compiler-compiler must generate the lexer and parser from the grammar file
- then, you can use them to compile the code
JFlex lexers are based on deterministic finite automata (DFAs).
JFlex is designed to work together with:
- the LALR parser generator CUP by Scott Hudson,
- and the Java modification of Berkeley Yacc BYacc/J by Bob Jamison.
It can also be used together with other parser generators like ANTLR or as a standalone tool.
Fro JFlex files editing support, see Grammar Kit
REx Parser Generator
Lex / Yacc
- http://dinosaur.compilertools.net/ - Yet Another Compiler-Compiler
Installtion - cygwin includes lex and yacc
Yac is used by php. See bnf yacc grammar
Dead project Babelfish
JavaCC is a tool used in many applications, which is much like antlr, with few features different here and there. However, it just generates Java code.
Used by: BeanShell
used by Calcite (Farrago, Optiq)
SableCC is a compiler-compiler tool for the Java environment. It handles LALR(1) grammars (for those who remember their grammar categories). In other words it's a bottom up parser (unlike JavaCC and Antlr which are top-down).
SableCC is a bottom up parser, which takes an unconventional and interesting approach of using object oriented methodology for constructing parsers. This results in easy to maintain code for generated parser. However, there are some performance issues at this point of time. It generates output in both C++ and Java
unified is an interface for processing text using syntax trees. It’s what powers remark, retext, and rehype, but it also allows for processing between multiple syntaxes.
unified enabled new exciting projects like Gatsby to pull in markdown, MDX to embed JSX, and Prettier to format it. It’s used to check code for Storybook, debugger.html (Mozilla), and opensource.guide (GitHub).