Stats

Locked Locked
Replies 7
Subscribers 145
Views 21169
Members are here 0

This discussion has been locked.

You can no longer post new replies to this discussion. If you have a question you can start a new discussion

How to parse a string in skill?

Hi,

I want to parse a string and rename it.

e.g. I would like to check for a cell name, and if there is an hyphen(-) in a cell name, I would like to convert it to an underscore(_).

so if a cell name is 'create-gds' I want to convert it to 'create_gds'. Any help would be appreciated.

-Sandeep

dmay over 12 years ago

Here is one way:
s="create-gds"
when(rexMatchp("-" s)
rexCompile("-")
s=rexReplace(s "_" 0)
)
Derek
Cancel
Vote Up 0 Vote Down

Cancel
Andrew Beckett over 12 years ago

Sandeep,
In IC61, you can do:
; only need to compile the pattern once
hyphen=pcreCompile("-")
; then any time you need to do the replace, can reference the pattern object in var hyphen
cellName="create-gds"
newCell=pcreReplace(hyphen cellName "_" 0)
In IC61 and IC5141 you can use the less powerful rex functions (but the compiled pattern will get overwritten if it is used elsewhere since it only has a single compiled pattern at once):
rexCompile("-")
cellName="create-gds"
newCell=rexReplace(cellName "_" 0)
The pcre functions have a much richer pattern matching syntax - see the PCRE web site for more details.
Regards,
Andrew.
Cancel
Vote Up 0 Vote Down

Cancel
marcelpreda over 12 years ago

Hi *,
My feeling is that for char substitution the most safe,simple, fast way is to use buildString() and parseString() procedures.
myCellName = "create-gds-2"
myCellName = buildString(parseString(myCellName "-") "_")
"create_gds_2"

BR,
Marcel
Cancel
Vote Up 0 Vote Down

Cancel
Andrew Beckett over 12 years ago

Marcel,
Actually I'd go for a regular expression approach. If you have multiple occurrences of the delimiter, or leading or trailing delimiters, it won't work properly. For example:
myCellName="-hello-world--test"
myCellName = buildString(parseString(myCellName "-") "_")
"hello_world_test"
Kind Regards,
Andrew.
Cancel
Vote Up 0 Vote Down

Cancel
Sandeep4386 over 12 years ago

Thank you everyone. rexReplace worked perfectly.
Cancel
Vote Up 0 Vote Down

Cancel
RFStuff over 12 years ago

Dear Andrew,
This type of replacement happens where ? Is it in the Schematic viewer or in the Created Netlist or in the Layout Editor ?
Kind Regards,
Cancel
Vote Up 0 Vote Down

Cancel
Andrew Beckett over 12 years ago

I don't understand your question. This post is about doing pattern replacement in SKILL, so it's nothing to do with a particular application.
Regards,
Andrew
Cancel
Vote Up 0 Vote Down

Cancel

Community Guidelines

The Cadence Design Communities support Cadence users and technologists interacting to exchange ideas, news, technical information, and best practices to solve problems and get the most from Cadence technology. The community is open to everyone, and to provide the most value, we require participants to follow our Community Guidelines that facilitate a quality exchange of ideas and information. By accessing, contributing, using or downloading any materials from the site, you agree to be bound by the full Community Guidelines.