Re: Passing code replacements by APIs (for SmPL)?

Re: Passing code replacements by APIs (for SmPL)?

[Markus Elfring]

> Desirable source code adjustments can also be generated into SmPL script variants.

Will any more software users get further development ideas from an SmPL script
like the following?


// See also:
// https://elixir.bootlin.com/linux/v6.16-rc2/source/include/uapi/linux/usb/ch9.h#L472-L678
@initialize:python@
@@
import sys
x = {}

def store_data(action, input, code):
    """Add information to an internal data structure."""
    x[code] = (action, input)

@find@
expression e;
identifier action, input;
type input_type, return_type != void;
@@
 static inline return_type action(input_type input)
 {
 return e;
 }

@script:python collection@
action << find.action;
input << find.input;
code << find.e;
@@
store_data(action, input, code)

@finalize:python@
@@
if x:
   sys.stdout.write("@replacements@\nconst struct usb_endpoint_descriptor *epd;\n@@\n(\n")
   sys.stdout.write("|\n".join("-{}\n+{}({})\n".format(key, value[0], value[1])
                    for key, value in x.items()))
   sys.stdout.write(")\n")
else:
   sys.stderr.write("No result for this analysis!\n")



Would you become interested to convert contents from any header (or source) files
into more advanced transformation approaches?

Regards,
Markus

Re: Passing code replacements by APIs (for SmPL)?

[Markus Elfring]

> Would you become interested to convert contents from any header (or source) files
> into more advanced transformation approaches?

I demonstrated that expressions can be extracted from selected function implementations
also by the means of the semantic patch language.
https://lore.kernel.org/cocci/481faa1d-7171-4657-8dc0-c37b153e6eaa@web.de/
https://sympa.inria.fr/sympa/arc/cocci/2025-06/msg00044.html

Now I am looking again for further software extension possibilities.

1. I would like to sort found expressions by decreasing complexity.

2. Some expressions will probably refer to known function (or macro) calls.
   How can corresponding identifiers be replaced by previously determined source code?


Regards,
Markus