Generate C++ code for BNF grammar [closed]

Question

I have looked at the following software tools:

• Ragel
• ANTLR
• BNF Converter
• Boost::Spirit
• Coco/R
• YACC

ANTLR seems the most straight-forward, however its documentation is lacking. Ragel looks possible, too, but I do not see an easy way to convert BNF into its syntax.

What other tools are available that can take BNF input and generate a corresponding, Unicode-friendly, cross-platform, standalone, C++ parser?

Many thanks for all suggestions.

Edit: Changed Objective-C requirement to C++.

Answer 1

Try boost.spirit 2.

The boost spirit user list is very active and answers are quick from the authors.