While the decls being printed for header file generated interfaces were mapped
from the top-level clang decls in that file, the Swift decls they correspond to
may not be top-level. E.g. top-level functions in the header file can be mapped
to property accessors on the Swift side, which were being printed simply as
"get" at the top level.
This updates header interface generation to map each decl to its top-level decl
before printing.
Resolves rdar://problem/63409659
Don't column align PBD entries if any entry spans from the same line as
the var/let to another line. E.g.
```
// Previous behavior:
let foo = someItem
.getValue(), // Column-alignment looks ok here, but...
bar = otherItem
.getValue()
getAThing()
.andDoStuffWithIt()
let foo = someItem
.getValue() // looks over-indented here, which is more common.
getOtherThing()
.andDoStuffWithIt()
// New behavior
getAThing()
.andDoStuffWithIt()
let foo = someItem
.getValue() // No column alignment in this case...
doOtherThing()
let foo = someItem
.getValue(), // Or in this case (unfortunate, but less common)...
bar = otherItem
.getValue()
let foo = someItem.getValue(),
bar = otherItem.getValue() // but still column-aligned in this case.
```
Resolves rdar://problem/63309288
Out of all operating systems ever supported by Swift, only Ubuntu 14.04
had libstdc++ 4.8, and Swift has sunset support for Ubuntu 14.04 for a
while now.
When producing frontend arguments for sourcekitd, force the output mode
to -typecheck so that we do not create any temporary output files in the
driver. Previously, any sourcekitd operation that created a compiler
invocation would create 0-sized .o file inside $TMPDIR that would never
be cleaned up.
The new swift-driver project handles temporaries much better as
VirtualPath, and should not need this approach.
rdar://62366123
Opaque result type syntax is not usable except the declaration of
itself. In other places, users need to let them inferred. If they are
inferred associated type, they need to reffered by the name of the
associated type.
rdar://problem/59817674
Out handling of clang submodules was handled differently between DocInfo and
InterfaceGen. For InterfaceGen submodules were mapped back to their top-level
clang modules (or their Swift overlay if it had one) before being passed
into printSubmoduleInterface, along with the dot separated name of the submodule.
For DocInfo, they were not, and only the rightmost component of their name was
passed. The call to retrieve the decls from a ModuleDecl doesn't work if the
ModuleDecl wraps a clang submodule, so we were missing these decls.
InterfaceGen for submodules also shouldn't have been mapping the module back to
the overlay of top-level clang module, as that meant we ended up printing
import decls from the Swift overlay in the submodule's interface.
Resolves rdar://problem/57338105
When completing a single argument for a trailing closure, pre-expand the
closure expression syntax instead of using a placeholder. It's not valid
to pass a non-closure anyway.
rdar://62189182
Since placeholder expansion works with a single placeholder, which is
somewhat at odds with multiple-trailing closures, we eagerly attempt to
expand all consecutive placeholders of closure type. That is, if the API
has multiple closure parameters at the end, expanding any one of them
will transform all of them to the new syntax.
Example
```
foo(a: <#T##()->()#>, b: <#T##()->()#>)
```
expanding *either* parameter will produce the following:
```
foo {
<#code#>
} b: {
<#code#>
}
```
(caveat: the indentation is not part of placeholder expansion, but it's
added here for clarity)
At least for now we do not attempt to corral an existing closure into
the new syntax, so for
```
foo(a: { bar() }, b: <#T##()->()#>)
```
The exansion will be
```
foo(a: { bar() }) {
<#code#>
}
```
as it was before.
rdar://59688632
Instead of getting all edits up front using the same source code, apply
each replacement before calculating the next. Placeholder expansion is
sensitive the surrounding code, so expanding multiple closures
separately can give different results from doing so in order. To allow
testing that, add a magic placeholder identifier __skip__ to skip
expansion during testing.
This is also required for handling multiple trailing closures.
func foo() {}
let a: Int = #^HERE^#
Previously, we marked 'foo()' as 'NotRecommented' because 'Void' doesn't
have any member hence it cannot be 'Int'. But it wass confusing with
'deprecated'.
Now that we output 'typerelation' which is 'invalid' in this case. So clients
can deprioritize results, or even filter them out.
rdar://problem/57726512
