Previously we had more ad hoc logic that tried to decide if it was
worth desugaring a type based on its structure. Now we instead look
for a typealias that might actually benefit from desugaring, and if
we don't find one we won't show the 'aka' note.
Use something a little higher-level for buffering bytes, so we can give the
Decoder's buffer a Collection requirement, on the way to building indexable
transcoded collections.
For now, we're still reaching into our high-level data structure's stored
properties rather than using its API.
This adds support for SE-0168, multi-line string literals.
Extend the lexer to recognize the new literals. Test cases added.
There are still areas for future diagnostic improvement, such as fixits and notes as to why a multi-line string literal will be malformed. Multi-line literals are explicitly forbidden inside of string interpolation, though this may be relaxed in the future.
When determining whether our inference of an optional type should add
a layer of optionality, look through lvalue types.
Fixes rdar://problem/31779785.
Many of StringCore private APIs, when the StringCore is itself a
substring, expect relative offsets rather than absolute offsets. This
fixes a bug in the sub-0x300 fast path where we were using absolute
offsets. Test cases added.
Infer same-type requirements among same-named associated
types/typealiases within inherited protocols. This is more staging; it
doesn't really have teeth until we stop wiring together these types as
part of lookup.
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.
* Allow CodingKey conformance to be automatically derived for enums
which have no raw type (with no associated values) and which have
a raw type of String or Int.
* Allow Encodable and Decodable conformance to be automatically derived
for classes and structs with Encodable/Decodable properties
* Add initial unit tests for verifying derived conformance
My original fix for rdar://problem/31794932 didn't work for generic
functions because it was checking in the unsubstituted interface
type. Check structurally instead. Fixes rdar://problem/31794932.
(and similar for flag_enum)
This commit prepares the importer for a world in which NS_ENUM and
NS_OPTIONS have adopted the new Clang attributes 'enum_extensibility'
and 'flag_enum', but API notes are used to reverse the effect. Without
this there would be no transition path for adopting the standard Cocoa
macros, which have applied unconditionally up to now.
rdar://problem/18744821
This handles the case where the left hand side of the cast is known
to be class-like, and the right hand side is known at compile time
to be a protocol composition type.
Note that this change results in a small optimization -- a checked
cast of a metatype known to be a class metatype to a class-constrained
existential metatype no longer has to emit an explicit check that
the source is class-constrained.
Fully dynamic casts are coming up next.
