[antlr-interest] how it works.

[Frank Yue]

   Hi , all . I have, of course, had a look round for any
documentation that might
help me but all I can find is documentation about how to use the system,
but not about how it works.
     Who could tell me where I can find the documents which tell me
how the class InputBuffer,class CharBuffer   , LexerSharedInput and
class CharScanner  to work . There is litter useful information on
Code API page .
      I am looking forward to your early answer.