[antlr-interest] Popping a lexer upon EOF

[Paul J. Lucas]

According to the FAQ, "How do I handle #include files or other nested input streams?", it 
says in part:

When you see an #include, create a new lexer just like you've been doing (no parser), and 
then notify the TokenStreamSelector (push state and point at new lexer). At the close of 
the included stream, tell the selector to pop it's state.

The question is: how do you catch "the close of the included stream" in order to pop it's 
state?

- Paul



 
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