freebsd-ports/devel/spirit/pkg-descr
Ying-Chieh Liao 7a7a0b1a56 add spirit
An object oriented recursive descent parser generator framework
2001-11-04 10:36:13 +00:00

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Spirit is an object oriented recursive descent parser generator framework
implemented using template meta-programming techniques. Expression templates
allow us to approximate the syntax of Extended Backus Normal Form (EBNF)
completely in C++. Parser objects are composed through operator overloading
and the result is a backtracking LL(inf) parser that is capable of parsing
rather ambiguous grammars.
The Spirit framework enables a target grammar to be written exclusively in
C++. Inline EBNF grammar specifications can mix freely with other C++ code
and, thanks to the generative power of C++ templates, are immediately
executable. In retrospect, conventional compiler-compilers or parser-
generators have to perform an additional translation step from the source
EBNF code to C or C++ code.
WWW: http://spirit.sourceforge.net/