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input text with input(), and call token() to get new
tokens.
The public attribute filename can be set to an initial
filename, but the lexer will update it upon #line
directives.
c C s@ || _ || _|| _|| _d| _d| _t�d�| _t�d�| _ dS )ab Create a new Lexer.
error_func:
An error function. Will be called with an error
message, line and column as arguments, in case of
an error during lexing.
on_lbrace_func, on_rbrace_func:
Called when an LBRACE or RBRACE is encountered
(likely to push/pop type_lookup_func's scope)
type_lookup_func:
A type lookup function. Given a string, it must
return True IFF this string is a name of a type
that was defined with a typedef earlier.
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