The hard bit is to be able to match the function call - and extract
whatever
is between the brackets - then I can recurse the bit between the
brackets if
it in turn contains a (user defined) function call.
My guess is that this is something that a regexp could deal with or
do I
have to go back to the techique of counting opening and closing
brackets?
Hi David,
To solve a problem of this type, what matters is to be able to
unambiguously know the status of the "unit" your regular expression
or whatever has identified. If you go from left to right, you can't
because you never know if a "(" parenthesis will be followed by more
"(" or not.
The minimal unit, that is the unit that you know not to contain any
further function itself is the ([^)]*) group, which corresponds to
function(...) where what is enclosed within the parentheses is not
allowed to contain any parenthesis.
What you may want to try, therefore, is to recurse with a regular
expression, that looks somehow like this (I let you get the correct
one):
[^\b()]* ( [^)]* )
(I put tabs for increased legibility; \b means any character that is
a word boundary... check the doc to be sure this correspond to what
you want).
The alternative is to look for a ")" character... then look from
right to left for the first "(" character. You unambiguously know
this forms a minimal unit. Another alternative, if you insist to go
from left to right is to look for a pattern of this type "(...)[^)].
Again, you know you have unambiguously come across a minimal unit
that doesn't enclose any further unit.
You don't try to find out what functions are enclosed within the big
ones. You rather try to identify the parent of each function. Once
you have a table with
node parent
bfct afct
cfct bfct
you can sort it and read it any way you want.
You may want to run a google search on 'linked list data structure'
for some additional insights <http://cslibrary.stanford.edu/103/
LinkedListBasics.pdf>
<http://www.gamedev.net/reference/programming/features/uds1/>
<http://www.csharpfriends.com/Articles/getArticle.aspx?articleID=176>
Marielle
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