Need help with movement from C to D

[safety0ff via Digitalmars-d-learn]

On Monday, 5 May 2014 at 03:57:54 UTC, Andrey wrote:
>
> A similar D code is, as far as I know,
>
> type.field.offsetof
>
> Is there an any way to make a corresponding D template?

What you've written is the specific syntax for offsetof in D.

If the intent is to create a template so that you can simply 
find/replace offsetof(type,field) with 
offsetoftemplate!(type,field) then I think it is easier to create 
a sed script - better yet a D program - for replacing the C macro 
with D code.

Example program:
import std.array;
import std.file;
import std.regex;
import std.string;
int main(string[] args)
{
	if (args.length < 2)
		return -1;
	auto regex = ctRegex!(`offsetof\(([^,]+),([^)]+)\)`);
	auto sink = appender!(char[])();
	foreach (filename; args[1..$])
	{
		auto text = readText(filename);
		sink.reserve(text.length);
		replaceAllInto!(cap => 
cap[1].strip~"."~cap[2].strip~".offsetof")(sink, text, regex);
		write(filename, sink.data);
		sink.clear();
	}
	return 0;
}