Analyze a D file for imports

[anonymous via Digitalmars-d]

On Tuesday, 30 June 2015 at 04:02:00 UTC, Maaaks wrote:
> I want to make a simple build utility that will rebuild only 
> those files which changed since last build and those files that 
> depend on them.
>
> Which is the easiest and yet reliable way to parse a D source 
> and find all imports in it (and file import()s as well)?

Here's a pull request to make rdmd do that:
https://github.com/D-Programming-Language/tools/pull/170

It uses regex over `dmd -deps`.

Be aware of the challenges:
Compiling source files separately is slower than passing them all 
at once to the compiler. This is why for rdmd the idea is run dmd 
once on all source files that need updating. Alas, dmd behaves a 
little quirky then with regards to where template instantiations 
go [1]. This is currently blocking the PR.

[1] 
https://github.com/D-Programming-Language/tools/pull/170#issuecomment-112526734