RegEx to split function expressions

Tim Conner

How can I use regex to split an expression like the following :

(Round(340/34.12)*2)

into this list :

(
Round
(
340
/
34.12
)
*
2
)

I could not find a sample to this in .Net help.
Thanks in advance,

Nov 15 '05 #1

Subscribe Reply

1439

Peter Rilling

When you say "like" do you mean exactly or similar.

1) Is the function "Round" always part of the expression or can there be
other functions or even no function?
2) Are all the numbers always in their shown format or can they all be
floating numbers?
3) Are parenthesis optional?
4) Do you allow any operators to be used?
5) Are you looking for the ability to parse ALL mathematical expressions in
the universe?
6) Do you allow whitespace to separate symbols?

"Tim Conner" <ti*******@hotm ail.com> wrote in message
news:OA******** *****@TK2MSFTNG P10.phx.gbl...

How can I use regex to split an expression like the following :

(Round(340/34.12)*2)

into this list :

(
Round
(
340
/
34.12
)
*
2
)

I could not find a sample to this in .Net help.
Thanks in advance,

Nov 15 '05 #2

Stephen Alpert

On Mon, 13 Oct 2003 12:24:00 -0500, "Tim Conner" <ti*******@hotm ail.com> wrote:

How can I use regex to split an expression like the following :
(Round(340/34.12)*2)
into this list :
(
Round
(
340
/
34.12
)
*
2
)

I could not find a sample to this in .Net help.

This is effectively a parsing function and RegExp aren't strong enough. Do you
want to handle precendence of operators as well? That is,
A + B * C

What are you really looking to do?

/steveA
Steve Alpert S t e v e _ A l p e r t @ I D X . C O M

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Nov 15 '05 #3

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