On 17 Feb 2010, at 14:12, Andreas Wagner wrote:
The source code that I have to parse loks more like:
if(signal):
variable_a := do_something
else:
variable_b := do_something_other
variable_c := signal_x;
How can i tell Bison that that it has to look for the indentations?
Has
anyone maybe an example that he/she can send me ? it would be very
helpful,
because i havent seen such an example.
You might look into the sources of the Haskell interpreter Hugs <http://haskell.org/hugs/
>, which I recall uses .y files. (Haskell admits layout syntax.)
My guess is though that you have to put a rule in the .l file that
recognizes the indentation, that is to be recognized.
If the syntax is good, it might be possible to do it with sufficient
lookahead ( a different type of language specification). There the GLR
parser might be used (se the Bison manual).
Hans
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