Demangle such suffixes as "unmangled suffix"
IRGen still uses '.<n>' to disambiguate partial apply thunks and outlined copy functions.
rdar://problem/32934962
As it’s not clear if we will need underscores, the demangler accepts $S and _$S.
Note that a double underscore is handled by the demangler client.
rdar://problem/32251811
Previously, two constructors with the same full name and argument
types would get identical manglings even if they were declared
'private' or 'fileprivate' in different files. This would lead to
symbol collisions in whole-module builds. Add a new mangling node for
private discriminators on base-name-less decls to make this unique.
This still doesn't fix the existing issue with private members, named
or not, conflicting when they're in the /same/ file, but since Swift 4
makes those members visible to one another (SE-0169) that's only an
issue in Swift 3 mode anyway, and as such probably won't get fixed at
all.
rdar://problem/27758199
The assert condition can be false for a malformed symbol, like _T0s30ReversedRandomAccessCollectionVyxGTfq3nnpf_nTfq1cn_nTfq4x_n
rdar://problem/32359287
This reverts commit 25985cb764. For now,
we're trying to avoid spurious non-structural changes to the mangling,
so that the /old/ mangling doesn't appear to change. That doesn't mean
no changes at all, but we can save this one for later.
At the time this code was written, the logic to find a Decl from a
demangled name still lived in LLDB. Now that it's been sunk into
libIDE, we can test the actual behavior, though I've changed it to
find declarations rather than types.
This can show up when trying to generate USRs for a document with
errors in it. This isn't a great answer because the names it generates
aren't unique (there may be more than one nameless entity with the
same type), but it at least generates valid mangled names.
When generating mangled names for purposes other than USRs, nameless
entities are now checked for by an assertion.
The goal here is to make the short demangling as short and readable as possible, also at the cost of omitting some information.
The assumption is that whenever the short demangling is displayed, there is a way for the user to also get the full demangled name if needed.
*) omit <where ...> because it does not give useful information anyway
Deserializer.deserialize<A where ...> () throws -> [A]
--> Deserializer.deserialize<A> () throws -> [A]
*) for multiple specialized functions only emit a single “specialized”
specialized specialized Constructible.create(A.Element) -> Constructible<A>
--> specialized Constructible.create(A.Element) -> Constructible<A>
*) Don’t print function argument types:
foo(Int, Double, named: Int)
--> foo(_:_:named:)
This is a trade-off, because it can lead to ambiguity if there are overloads with different types.
*) make contexts of closures, local functions, etc. more readable by using “<a> in <b>” syntax
This is also done for the full and not only for the simplified demangling.
Renderer.(renderInlines([Inline]) -> String).(closure #1)
--> closure #1 in Renderer.renderInlines
*) change spacing, so that it matches our coding style:
foo <A> (x : A)
--> foo<A>(x: A)
There are cases where the re-mangling doesn't yield the original mangled name.
This is no problem for the compiler as it only affects how mangling substitutions are handled.
rdar://problem/31539542
Replace VariadicTuple and NonVariadicTuple with a single Tuple node.
The variadic property is now part of the tuple element and not of the whole tuple.
Instead of appending a character for each substitution, we now prefix the substitution with the repeat count, e.g.
AbbbbB -> A5B
The same is done for known-type substitutions, e.g.
SiSiSi -> S3i
This significantly shrinks mangled names which contain large lists of the same type, like
func foo(_ x: (Int, Int, Int, Int, Int, Int, Int, Int, Int, Int, Int, Int))
rdar://problem/30707433
The actual problem is that the mangling is wrong. But it’s hard to fix now and we will switch to the new mangling anyway.
So this fix just makes sure the demangler (and therefore lldb) does not crash.
fixes rdar://problem/29881277
Local generic types can appear inside functions inside extensions
of other types. When demangling bound generic arguments, the demangler
assumed that a module was the only other kind of context outside
of nominal types.
rdar://problem/27573079
* Add UnsafeRawPointer type and API.
As proposed in SE-0107: UnsafeRawPointer.
https://github.com/apple/swift-evolution/blob/master/proposals/0107-unsaferawpointer.md
The fundamental difference between Unsafe[Mutable]RawPointer and
Unsafe[Mutable]Pointer<Pointee> is simply that the former is used for "untyped"
memory access, and the later is used for "typed" memory access. Let's refer to
these as "raw pointers" and "typed pointers". Because operations on raw pointers
access untyped memory, the compiler cannot make assumptions about the underlying
type of memory and must be conservative. With operations on typed pointers, the
compiler may make strict assumptions about the type of the underlying memory,
which allows more aggressive optimization.
Memory can only be accessed by a typed pointer when it is currently
bound to the Pointee type. Memory can be bound to type `T` via:
- `UnsafePointer<T>.allocate(capacity: n)`
- `UnsafePointer<Pointee>.withMemoryRebound(to: T.self, capacity: n) {...}`
- `UnsafeMutableRawPointer.initializeMemory(as: T.self, at: i, count: n, to: x)`
- `UnsafeMutableRawPointer.initializeMemory(as: T.self, from: p, count: n)`
- `UnsafeMutableRawPointer.moveInitializeMemory(as: T.self, from: p, count: n)`
- `UnsafeMutableRawPointer.bindMemory(to: T.self, capacity: n)`
Mangle UnsafeRawPointer as predefined substitution 'Sv' for Swift void
pointer ([urp] are taken).
* UnsafeRawPointer minor improvements.
Incorporate Dmitri's feedback.
Properly use a _memmove helper.
Add load/storeBytes alignment precondition checks.
Reword comments.
Demangler tests.
* Fix name mangling test cases.
* Fix bind_memory specialization.
- All parts of the compiler now use ‘P1 & P2’ syntax
- The demangler and AST printer wrap the composition in parens if it is
in a metatype lookup
- IRGen mangles compositions differently
- “protocol<>” is now “swift.Any”
- “protocol<_TP1P,_TP1Q>” is now “_TP1P&_TP1Q”
- Tests cases are updated and added to test the new syntax and mangling
