Is there a translator tool for translating EBNF to boost::spirit?

From the spirit introduction : Expression templates allow us to approximate the syntax of Extended Backus-Normal Form (EBNF) completely in C So you can almost write plain EBNF, no need for a translator I'm not so familiar with spirit to know how exactly the syntax is different, but if the differences of spirit C++ EBNF and real EBNF are minor a simple sed script may suffice If not you are right, you could write a spirit parser that understands EBNF and then use the AST to create C++ code that is a spirit representation of that AST.

From the spirit introduction: Expression templates allow us to approximate the syntax of Extended Backus-Normal Form (EBNF) completely in C++. So you can almost write plain EBNF, no need for a translator. I'm not so familiar with spirit to know how exactly the syntax is different, but if the differences of spirit C++ EBNF and real EBNF are minor a simple sed script may suffice.

If not you are right, you could write a spirit parser that understands EBNF and then use the AST to create C++ code that is a spirit representation of that AST.

For large EBNFs (grammatica.percederberg. Net/grammar/asn1/asn1. Grammar), even thou it's almost identical, it's still a pain.It's not necessary to have one, but it would be helpful.

– chila May 29 '09 at 1:01 If your Grammar is that large, you probably don't want to use Spirit for it ;) – Billy ONeal May 31 '09 at 4:05 @Bill: why not? – Diego Sevilla Apr 6 at 13:56 @Diego: Couple of things here -- Spirit has been almost completely rewritten since I posted this answer -- now the correct tool to use would be boost::spirit::qi and it's a lot better. But my biggest older complaints with Spirit are still there.

1. If your grammar has a syntax error, lord help the poor soul who has to decipher the template error messages it generates.2. Compile times are extremely long even for relatively simple grammars.

– Billy ONeal Apr 6 at 15:19.

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