[Boost-users] boost::proto helpful for a compiler project?

How can boost proto help me in my compiler project? Is it another way to write a grammar and parse it? Peter Foelsche "The first point (using an init() function in preference to a constructor) is bogus. Using constructors and exception handling is a more general and systematic way of dealing with resource acquisition and initialization errors. This style is a relic of pre-exception C++." -- Stroustrup