Re: cpp state

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On Sun, 13 Apr 2025, [email protected] wrote:

> Hi-

Hi Bill.

> I don't suppose there's any way to access the state of the preprocessor 
> following an invocation? I'm looking for a way to read a header file (for 
> example) and determine what defines are present and their values. I suppose I 
> can append some pike-code to the string in question and use that to populate 
> variables which can then be evaluated, but what would only work if I already 
> know the name of the define I'm looking for.
>
> I don't recall this being available, but thought I'd ask. Happy to hear any 
> suggestions!

It is almost available. The variable holding the mapping with the active
macros is currently declared private, and there is no accessor or getter
for it.

Otherwise something like:

   CompilerEnvironment.CPP my_cpp = DefaultCompilerEnvironment.CPP();
   my_cpp->init_pike_cpp();
   string out = my_cpp->high_cpp(in);
   // Access the private mapping cpp->defines here.

could work.

> Bill

 	/grubba

Hmm... Looks like some of the symbols in CPP are still undocumented.

-- 
Henrik Grubbström					[email protected]
Roxen Internet Software AB
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