Reflex: A lightweight lexical scanner library.
Reflex supports regular expressions, rule actions, multiple scanner states,
tracking of line/column numbers, and customizable token classes.
Reflex is not a "scanner generator" in the sense of generating source code.
Instead, it generates a scanner object dynamically based on the set of
input rules sepecified. The rules themselves are ordinary python regular
expressions, combined with rule actions which are simply python functions.
Example use:
# Create a scanner. The "start" parameter specifies the name of the
# starting state. Note: The state argument can be any hashable python
# type.
scanner = reflex.scanner( "start" )
# Add some ...