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Pseudo Classes - Include two more copies of the same code.

 
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mbradley



Joined: 11 Jul 2009
Posts: 118
Location: California, USA

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Pseudo Classes - Include two more copies of the same code.
PostPosted: Mon Nov 14, 2011 10:47 pm     Reply with quote

I have rewritten my Class code to allow a type of code reuse in the CCS compiler.

Please let me know if you find this usefull or have any comments.

I maintain the source here:
http://www.mculabs.com/snippets/pclass.html

Imagine you have a nice piece of code, and you need more than one instance of it in your source, what do you do? In CCS you would (unless I hear another way) copy the file over, give it a new name, and rename all the functions and variables.

I had a new circular buffer piece of code that I wrote, and I needed two instances of it. So I just use this:
Code:

#include "pclass.h"

         ClassDef gpsBuffer
            ClassInclude "cls_circbuffer.c"
            ClassEnd

         ClassDef compassBuffer
            ClassInclude "cls_circbuffer.c"
            ClassEnd


And to use the two instances, I can do this:
Code:

         g = gpsBuffer_getChr();
         c = compassBuffer_getChr();

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MikeW



Joined: 15 Sep 2003
Posts: 165
Location: Warrington UK

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thank you
PostPosted: Tue Nov 15, 2011 5:32 am     Reply with quote

Michael,

thank you, keep em coming !!!
n-squared



Joined: 03 Oct 2006
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PostPosted: Sun Nov 20, 2011 4:06 pm     Reply with quote

Hi
Great stuff!
Looks like I am going to use this method in many of my projects.

Thanks.

BR
Noam
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mbradley



Joined: 11 Jul 2009
Posts: 118
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PostPosted: Sun Nov 20, 2011 4:15 pm     Reply with quote

Thank you,

Although it makes for a bit of funky looking source, if you got a solid routine or set of functions, this works great for creating two copies of it.

I use it most for circular buffers, and for FIFO buffers. I have also used my old one for serial routines that I can use with chips with more than one uart.
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Michael Bradley
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Open Drivers and Projects
Eduardo__



Joined: 23 Nov 2011
Posts: 197
Location: Brazil

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Cool
PostPosted: Thu Nov 24, 2011 6:54 am     Reply with quote

Cool!

I´m going to try it later.
I´ve not found information in CCS Help about these preprocessors. I mean ## preprocessors use in:

#define __mDEFCLASS(cls,def) ##cls##_##def

Another question, CCS compiler isolates the variable names inside the class?
Is it possible to create workspaces inside programs, like C++?
It would be good for creating universal drivers and another resources.

Thanks for information. Very Happy
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Eduardo Guilherme Brandt
mbradley



Joined: 11 Jul 2009
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PostPosted: Thu Nov 24, 2011 12:30 pm     Reply with quote

CCS is not isolating variable names with my macros....

In summarize what's going on, if you use my macros, it will prepend all functions and variables names, in essence creating unique names for these.

Any var inside a function is like any other var inside a function, unique to that function.

However, if you have any global vars needed for the class, preface them with clsVar() to make them unique to the class.

The ## is for concatenation,

So , if we say:
clsFn(myClass,myFunc(aVar))
{
}

Turns into:
__mDEFCLASS(myClass,myFunc(aVar))
{
}

And this turns expands to:

myClass_myFunc(aVar)
{
}
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Michael Bradley
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Open Drivers and Projects
Eduardo__



Joined: 23 Nov 2011
Posts: 197
Location: Brazil

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Classes
PostPosted: Fri Nov 25, 2011 5:55 am     Reply with quote

Anyway, that´s a good code.
Thank you a lot!
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Eduardo Guilherme Brandt
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