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Replace a pattern with groups using pcre or regex

VenuA

If I have a a string say:

myString="((pPar(\"area\"))*(pPar(\"m\")))" 

I want to convert it to myStringAfter = area*m 

If I use recReplace or pcre functions, I am getting myStringAfter=(area)*(m)

But, I can not evaluate as (mi) or (area) are considered as functions in Skill for my purpose.

Is there any way I can use pPar(\"[a-z A-Z 0-9]+\") or any smart regular expressions and group the "area" and "m" and replace them without open and close brackets?

I tried in possible combinations, and I am not successful so far.

Regards,

Venu

Parents

  • Venu,

    I think to remove matched parentheses with regular expressions isn't that easy in a single shot - the issue is knowing where you want the expressions and where you don't (for example, you'd want (3+area)*(m) to only remove the parentheses around the m. You could probably do this with repeated calls to strip out () around a variable name though.

    Anyway, I'd also consider using the AEL functions to evaluate the expression, rather than making it look like SKILL (which it isn't). For example, something like this:

    /* abIPar.il

Author     A.D.Beckett
Group      Custom IC (UK), Cadence Design Systems Ltd.
Language   SKILL
Date       Aug 28, 2003 
Modified   
By         

Function that can be used in an opParamExprList()
CDF setup to get an instance's parameter value.

Note, this is not the _simulated_ value necessarily...

***************************************************

SCCS Info: @(#) abIPar.il 07/01/08.21:14:26 1.3

*/

(procedure (abIPar paramName @optional (inst ilInst) (slot 'value))
  (let (env lineage session cdf unevaluated evaluated compiled top)
       (setq top (geGetTopLevelCellView))
       (getWarn)
       (unless top (error "Can't find parameter %s" paramName))
       ;-----------------------------------------------------------------
       ; Get the original parameter value
       ;-----------------------------------------------------------------
       (setq cdf (cdfGetInstCDF inst))
       (setq unevaluated (get (get cdf (concat paramName)) slot))
       ;-----------------------------------------------------------------
       ; If it is a string, evaluate it as an AEL expression
       ;-----------------------------------------------------------------
       (if (stringp unevaluated) 
           (progn
            (setq env (aelEnvCreate "f"))
            ;-----------------------------------------------------------
            ; set the path down to this element
            ;-----------------------------------------------------------
            (setq lineage (append1 (reverse 
                                    (mapcar 'car (geGetHierMemInst))) 
                                   top))
            (setq lineage (cons inst lineage))
            (aelSetLineage env lineage)
            ;-----------------------------------------------------------------
            ; Get the current session
            ;-----------------------------------------------------------------
            (setq session (asiGetSession (hiGetCurrentWindow)))
            ;-----------------------------------------------------------------
            ; define all the global variables
            ;-----------------------------------------------------------------
            (foreach designVar 
                     (or (and session (asiGetDesignVarList session))
                         (artGetCellViewDesignVarList top))
                     (aelEnvSetGlobals env (car designVar) (cadr designVar))
                     )
            ;-----------------------------------------------------------------
            ; Evaluate the expression
            ;-----------------------------------------------------------------
            (if (or (null unevaluated)
                    (equal unevaluated "")) 
                (setq evaluated 0.0)
                (progn
                 (setq compiled (aelEnvCompile env unevaluated))
                 (if compiled
                     (setq evaluated (aelNumber (aelEnvExecute compiled)))
                     (progn
                      (printf "*ERROR* %s " (aelEnvGetErrStr))
                      (setq evaluated nil)))
                 ))
            evaluated
            )
           ;-------------------------------------------------------------
           ; Otherwise, if not a string, return it as it is
           ;-------------------------------------------------------------
           unevaluated
           )
       )
  )

    Note that this is figuring out the "lineage" (i.e. hierarchical path" from how you pushed through the hierarchy, so you might need a different approach depending on what your goal is.

    Kind Regards,

    Andrew.

Reply

  • Venu,

    I think to remove matched parentheses with regular expressions isn't that easy in a single shot - the issue is knowing where you want the expressions and where you don't (for example, you'd want (3+area)*(m) to only remove the parentheses around the m. You could probably do this with repeated calls to strip out () around a variable name though.

    Anyway, I'd also consider using the AEL functions to evaluate the expression, rather than making it look like SKILL (which it isn't). For example, something like this:

    /* abIPar.il

Author     A.D.Beckett
Group      Custom IC (UK), Cadence Design Systems Ltd.
Language   SKILL
Date       Aug 28, 2003 
Modified   
By         

Function that can be used in an opParamExprList()
CDF setup to get an instance's parameter value.

Note, this is not the _simulated_ value necessarily...

***************************************************

SCCS Info: @(#) abIPar.il 07/01/08.21:14:26 1.3

*/

(procedure (abIPar paramName @optional (inst ilInst) (slot 'value))
  (let (env lineage session cdf unevaluated evaluated compiled top)
       (setq top (geGetTopLevelCellView))
       (getWarn)
       (unless top (error "Can't find parameter %s" paramName))
       ;-----------------------------------------------------------------
       ; Get the original parameter value
       ;-----------------------------------------------------------------
       (setq cdf (cdfGetInstCDF inst))
       (setq unevaluated (get (get cdf (concat paramName)) slot))
       ;-----------------------------------------------------------------
       ; If it is a string, evaluate it as an AEL expression
       ;-----------------------------------------------------------------
       (if (stringp unevaluated) 
           (progn
            (setq env (aelEnvCreate "f"))
            ;-----------------------------------------------------------
            ; set the path down to this element
            ;-----------------------------------------------------------
            (setq lineage (append1 (reverse 
                                    (mapcar 'car (geGetHierMemInst))) 
                                   top))
            (setq lineage (cons inst lineage))
            (aelSetLineage env lineage)
            ;-----------------------------------------------------------------
            ; Get the current session
            ;-----------------------------------------------------------------
            (setq session (asiGetSession (hiGetCurrentWindow)))
            ;-----------------------------------------------------------------
            ; define all the global variables
            ;-----------------------------------------------------------------
            (foreach designVar 
                     (or (and session (asiGetDesignVarList session))
                         (artGetCellViewDesignVarList top))
                     (aelEnvSetGlobals env (car designVar) (cadr designVar))
                     )
            ;-----------------------------------------------------------------
            ; Evaluate the expression
            ;-----------------------------------------------------------------
            (if (or (null unevaluated)
                    (equal unevaluated "")) 
                (setq evaluated 0.0)
                (progn
                 (setq compiled (aelEnvCompile env unevaluated))
                 (if compiled
                     (setq evaluated (aelNumber (aelEnvExecute compiled)))
                     (progn
                      (printf "*ERROR* %s " (aelEnvGetErrStr))
                      (setq evaluated nil)))
                 ))
            evaluated
            )
           ;-------------------------------------------------------------
           ; Otherwise, if not a string, return it as it is
           ;-------------------------------------------------------------
           unevaluated
           )
       )
  )

    Note that this is figuring out the "lineage" (i.e. hierarchical path" from how you pushed through the hierarchy, so you might need a different approach depending on what your goal is.

    Kind Regards,

    Andrew.

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