[swift-evolution] [Pitch] Introducing #fileName debug identifier

[Erica Sadun]

> On Mar 12, 2016, at 8:27 PM, Dmitri Gribenko <gribozavr at gmail.com> wrote:
> It should be OK to have multiple files with the same name in the
> project.  For example, in the Swift compiler we have Decl.cpp in both
> Clang and Swift.  It is important to distinguish these in the
> assertion messages.
> 
> Thus, I'd suggest to consider instead passing the project directory to
> the compiler, so that the compiler can provide a file name relative to
> the project root.

Agreed that name overlap is possible. I tend to use a lot of shared code
with "add reference" vs "add file" and relative-to-project-root actually 
ends up longer that way than just absolute path.

-- Erica

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