There are techniques that help parsers parse a far larger class of grammars than their underlying model permits. Some of these are: - turning it into a state m

There are techniques that help parsers parse a far larger class of grammars than their underlying model permits. Some of these are: - turning it into a state machine (required to deal with nested comments and C++ template syntax) - building the symbol table while parsing and querying for disambiguation - treating expressions as a stream of atoms and using a specialised precedence parser (probably required to deal with operator overloading) Parser generators usually employ these as well.