Replace __FILE__ and similar with #file or related - breaking change for swift 2.2+

[younata]

Hey friends! (Hi Jeff! Hi Brian!)

Note that as of the most recent (mar 1) swift 3.0 prerelease, there's a compiler bug that this triggers. Might be fixed by next prerelease, might not. If not, then help would be nice?

A stack trace of the compiler bug, if you're interested:

Assertion failed: (isa<X>(Val) && "cast<Ty>() argument of incompatible type!"), function cast, file /Users/buildnode/jenkins/workspace/oss-swift-package-osx/llvm/include/llvm/Support/Casting.h, line 237.
0  swift                    0x00000001084e4a6b llvm::sys::PrintStackTrace(llvm::raw_ostream&) + 43
1  swift                    0x00000001084e3d26 llvm::sys::RunSignalHandlers() + 70
2  swift                    0x00000001084e5112 SignalHandler(int) + 322
3  libsystem_platform.dylib 0x00007fff9ac4eeaa _sigtramp + 26
4  swift                    0x0000000108f995ed FirstTarget + 71701
5  swift                    0x00000001084e4f26 abort + 22
6  swift                    0x00000001084e4f01 __assert_rtn + 81
7  swift                    0x0000000105d0d00f swift::irgen::bindGenericRequirement(swift::irgen::IRGenFunction&, swift::irgen::GenericRequirement, llvm::Value*, llvm::function_ref<swift::CanType (swift::CanType)>) + 239
8  swift                    0x0000000105d0b149 swift::irgen::bindFromGenericRequirementsBuffer(swift::irgen::IRGenFunction&, llvm::ArrayRef<swift::irgen::GenericRequirement>, swift::irgen::Address, llvm::function_ref<swift::CanType (swift::CanType)>) + 361
9  swift                    0x0000000105d0afcf swift::irgen::NecessaryBindings::restore(swift::irgen::IRGenFunction&, swift::irgen::Address) const + 79
10 swift                    0x0000000105cd43bf swift::irgen::HeapLayout::getPrivateMetadata(swift::irgen::IRGenModule&) const + 447
11 swift                    0x0000000105cd4956 swift::irgen::IRGenFunction::emitUnmanagedAlloc(swift::irgen::HeapLayout const&, llvm::Twine const&, swift::irgen::HeapNonFixedOffsets const*) + 38
12 swift                    0x0000000105cc954f swift::irgen::emitFunctionPartialApplication(swift::irgen::IRGenFunction&, llvm::Value*, llvm::Value*, swift::irgen::Explosion&, llvm::ArrayRef<swift::SILParameterInfo>, llvm::ArrayRef<swift::Substitution>, swift::CanTypeWrapper<swift::SILFunctionType>, swift::CanTypeWrapper<swift::SILFunctionType>, swift::CanTypeWrapper<swift::SILFunctionType>, swift::irgen::Explosion&) + 3311
13 swift                    0x0000000105d62ee6 swift::SILVisitor<(anonymous namespace)::IRGenSILFunction, void>::visit(swift::ValueBase*) + 45510
14 swift                    0x0000000105d53ffb (anonymous namespace)::IRGenSILFunction::emitSILFunction() + 9579
15 swift                    0x0000000105d516a0 swift::irgen::IRGenModule::emitSILFunction(swift::SILFunction*) + 1168
16 swift                    0x0000000105c84f5c swift::irgen::IRGenModuleDispatcher::emitGlobalTopLevel() + 428
17 swift                    0x0000000105d35725 performIRGeneration(swift::IRGenOptions&, swift::ModuleDecl*, swift::SILModule*, llvm::StringRef, llvm::LLVMContext&, swift::SourceFile*, unsigned int) + 1125
18 swift                    0x0000000105d35cf6 swift::performIRGeneration(swift::IRGenOptions&, swift::SourceFile&, swift::SILModule*, llvm::StringRef, llvm::LLVMContext&, unsigned int) + 70
19 swift                    0x0000000105be4402 frontend_main(llvm::ArrayRef<char const*>, char const*, void*) + 12034
20 swift                    0x0000000105bdd489 main + 2937
21 libdyld.dylib            0x00007fff8d1265ad start + 1
22 libdyld.dylib            0x0000000000000072 start + 1928174278
Stack dump:
0.  Program arguments: /Library/Developer/Toolchains/swift-DEVELOPMENT-SNAPSHOT-2016-03-01-a.xctoolchain/usr/bin/swift -frontend -c /Users/you/workspace/Nimble/Sources/Nimble/Matchers/BeCloseTo.swift /Users/you/workspace/Nimble/Sources/Nimble/Wrappers/MatcherFunc.swift /Users/you/workspace/Nimble/Sources/Nimble/Expectation.swift /Users/you/workspace/Nimble/Sources/Nimble/Adapters/NimbleXCTestHandler.swift /Users/you/workspace/Nimble/Sources/Nimble/Utils/Stringers.swift /Users/you/workspace/Nimble/Sources/Nimble/Utils/SourceLocation.swift /Users/you/workspace/Nimble/Sources/Nimble/Matchers/BeLessThanOrEqual.swift /Users/you/workspace/Nimble/Sources/Nimble/Adapters/AssertionDispatcher.swift /Users/you/workspace/Nimble/Sources/Nimble/Utils/Functional.swift /Users/you/workspace/Nimble/Sources/Nimble/Matchers/BeAnInstanceOf.swift /Users/you/workspace/Nimble/Sources/Nimble/Matchers/BeLogical.swift /Users/you/workspace/Nimble/Sources/Nimble/ObjCExpectation.swift /Users/you/workspace/Nimble/Sources/Nimble/DSL+Wait.swift /Users/you/workspace/Nimble/Sources/Nimble/Matchers/AllPass.swift /Users/you/workspace/Nimble/Sources/Nimble/Matchers/BeAKindOf.swift /Users/you/workspace/Nimble/Sources/Nimble/Adapters/AssertionRecorder.swift /Users/you/workspace/Nimble/Sources/Nimble/Matchers/BeVoid.swift /Users/you/workspace/Nimble/Sources/Nimble/Matchers/PostNotification.swift /Users/you/workspace/Nimble/Sources/Nimble/Matchers/Match.swift /Users/you/workspace/Nimble/Sources/Nimble/Matchers/ThrowError.swift -primary-file /Users/you/workspace/Nimble/Sources/Nimble/Matchers/Equal.swift /Users/you/workspace/Nimble/Sources/Nimble/Matchers/BeLessThan.swift /Users/you/workspace/Nimble/Sources/Nimble/Matchers/BeGreaterThan.swift /Users/you/workspace/Nimble/Sources/Nimble/Adapters/AdapterProtocols.swift /Users/you/workspace/Nimble/Sources/Nimble/Adapters/NimbleEnvironment.swift /Users/you/workspace/Nimble/Sources/Nimble/Matchers/RaisesException.swift /Users/you/workspace/Nimble/Sources/Nimble/Matchers/Contain.swift /Users/you/workspace/Nimble/Sources/Nimble/Matchers/BeGreaterThanOrEqualTo.swift /Users/you/workspace/Nimble/Sources/Nimble/Wrappers/AsyncMatcherWrapper.swift /Users/you/workspace/Nimble/Sources/Nimble/Matchers/BeginWith.swift /Users/you/workspace/Nimble/Sources/Nimble/Matchers/BeIdenticalTo.swift /Users/you/workspace/Nimble/Sources/Nimble/Matchers/BeEmpty.swift /Users/you/workspace/Nimble/Sources/Nimble/Matchers/BeNil.swift /Users/you/workspace/Nimble/Sources/Nimble/Utils/Async.swift /Users/you/workspace/Nimble/Sources/Nimble/Matchers/EndWith.swift /Users/you/workspace/Nimble/Sources/Nimble/Matchers/MatcherProtocols.swift /Users/you/workspace/Nimble/Sources/Nimble/Wrappers/ObjCMatcher.swift /Users/you/workspace/Nimble/Sources/Nimble/DSL.swift /Users/you/workspace/Nimble/Sources/Nimble/Matchers/SatisfyAnyOf.swift /Users/you/workspace/Nimble/Sources/Nimble/Expression.swift /Users/you/workspace/Nimble/Sources/Nimble/FailureMessage.swift /Users/you/workspace/Nimble/Sources/Nimble/Matchers/HaveCount.swift -target x86_64-apple-macosx10.9 -enable-objc-interop -sdk /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.11.sdk -I /Users/you/Library/Developer/Xcode/DerivedData/Nimble-avfmctrdkmaawddbgnnrooogzuvv/Build/Products/Debug -F /Users/you/Library/Developer/Xcode/DerivedData/Nimble-avfmctrdkmaawddbgnnrooogzuvv/Build/Products/Debug -F /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/Library/Frameworks -F /Applications/Xcode.app/Contents/Developer/Library/Frameworks -enable-testing -g -import-underlying-module -module-cache-path /Users/you/Library/Developer/Xcode/DerivedData/ModuleCache -serialize-debugging-options -Xcc -I/Users/you/Library/Developer/Xcode/DerivedData/Nimble-avfmctrdkmaawddbgnnrooogzuvv/Build/Intermediates/Nimble.build/Debug/Nimble-OSX.build/swift-overrides.hmap -Xcc -iquote -Xcc /Users/you/Library/Developer/Xcode/DerivedData/Nimble-avfmctrdkmaawddbgnnrooogzuvv/Build/Intermediates/Nimble.build/Debug/Nimble-OSX.build/Nimble-generated-files.hmap -Xcc -I/Users/you/Library/Developer/Xcode/DerivedData/Nimble-avfmctrdkmaawddbgnnrooogzuvv/Build/Intermediates/Nimble.build/Debug/Nimble-OSX.build/Nimble-own-target-headers.hmap -Xcc -I/Users/you/Library/Developer/Xcode/DerivedData/Nimble-avfmctrdkmaawddbgnnrooogzuvv/Build/Intermediates/Nimble.build/Debug/Nimble-OSX.build/Nimble-all-non-framework-target-headers.hmap -Xcc -ivfsoverlay -Xcc /Users/you/Library/Developer/Xcode/DerivedData/Nimble-avfmctrdkmaawddbgnnrooogzuvv/Build/Intermediates/Nimble.build/all-product-headers.yaml -Xcc -iquote -Xcc /Users/you/Library/Developer/Xcode/DerivedData/Nimble-avfmctrdkmaawddbgnnrooogzuvv/Build/Intermediates/Nimble.build/Debug/Nimble-OSX.build/Nimble-project-headers.hmap -Xcc -I/Users/you/Library/Developer/Xcode/DerivedData/Nimble-avfmctrdkmaawddbgnnrooogzuvv/Build/Products/Debug/include -Xcc -I/Users/you/Library/Developer/Xcode/DerivedData/Nimble-avfmctrdkmaawddbgnnrooogzuvv/Build/Intermediates/Nimble.build/Debug/Nimble-OSX.build/DerivedSources/x86_64 -Xcc -I/Users/you/Library/Developer/Xcode/DerivedData/Nimble-avfmctrdkmaawddbgnnrooogzuvv/Build/Intermediates/Nimble.build/Debug/Nimble-OSX.build/DerivedSources -Xcc -DDEBUG=1 -Xcc -DDEBUG=1 -Xcc -ivfsoverlay -Xcc /Users/you/Library/Developer/Xcode/DerivedData/Nimble-avfmctrdkmaawddbgnnrooogzuvv/Build/Intermediates/Nimble.build/Debug/Nimble-OSX.build/unextended-module-overlay.yaml -Xcc -working-directory/Users/you/workspace/Nimble -emit-module-doc-path /Users/you/Library/Developer/Xcode/DerivedData/Nimble-avfmctrdkmaawddbgnnrooogzuvv/Build/Intermediates/Nimble.build/Debug/Nimble-OSX.build/Objects-normal/x86_64/Equal~partial.swiftdoc -Onone -module-name Nimble -emit-module-path /Users/you/Library/Developer/Xcode/DerivedData/Nimble-avfmctrdkmaawddbgnnrooogzuvv/Build/Intermediates/Nimble.build/Debug/Nimble-OSX.build/Objects-normal/x86_64/Equal~partial.swiftmodule -serialize-diagnostics-path /Users/you/Library/Developer/Xcode/DerivedData/Nimble-avfmctrdkmaawddbgnnrooogzuvv/Build/Intermediates/Nimble.build/Debug/Nimble-OSX.build/Objects-normal/x86_64/Equal.dia -emit-dependencies-path /Users/you/Library/Developer/Xcode/DerivedData/Nimble-avfmctrdkmaawddbgnnrooogzuvv/Build/Intermediates/Nimble.build/Debug/Nimble-OSX.build/Objects-normal/x86_64/Equal.d -emit-reference-dependencies-path /Users/you/Library/Developer/Xcode/DerivedData/Nimble-avfmctrdkmaawddbgnnrooogzuvv/Build/Intermediates/Nimble.build/Debug/Nimble-OSX.build/Objects-normal/x86_64/Equal.swiftdeps -o /Users/you/Library/Developer/Xcode/DerivedData/Nimble-avfmctrdkmaawddbgnnrooogzuvv/Build/Intermediates/Nimble.build/Debug/Nimble-OSX.build/Objects-normal/x86_64/Equal.o 
1.  While emitting IR SIL function @_TF6Nimble5equaluRxs8HashablerFGSqGVs3Setx__GVS_17NonNilMatcherFuncGS1_x__ for 'equal' at /Users/you/workspace/Nimble/Sources/Nimble/Matchers/Equal.swift:88:8

[morganchen12]

CI doesn't seem to like this so much. If we bump the development snapshot version hopefully it'll fix itself?

[jeffh]

As @morganchen12 mentioned, the version of swift referenced via swiftenv needs to be updated to the latest snapshot.

Also, I think these changes would force us to maintain a separate branch until Xcode stable has these changes.

[younata]

Closing in favor of #269