The previous logic for this was unused, replace
it with new logic that consults
InvertibleProtocols.def for the list of protocols
to suggest.
rdar://139212286
Add a case for completing type attributes in
inheritance clause position, and limit the
completion of `@unchecked`, `@preconcurrency`, and
`@retroactive` to that case.
Complete ownership specifiers such as `consuming`,
`borrowing`, and `inout` in parameter type
position. While here, also complete `isolated`.
rdar://127261573
This warnings don't give much benefits for developers. Code completion
UI tends to show them unusable. But usually, developers can modify the
context to accept async calls, e.g. by wrapping it with `Task { }`
rdar://126737530
This removes the distinction between argument completions and postfix expr paren completions, which was meaningless since solver-based completion.
It then determines whether to suggest the entire function call pattern (with all argument labels) or only a single argument based on whether there are any existing arguments in the call.
For this to work properly, we need to improve parser recovery a little bit so that it parsers arguments after the code completion token properly.
This should make call pattern heuristics obsolete.
rdar://84809503
The implementation is not 100% perfect but I don’t think it’s worth putting too much effort into it passing more information down in the parser if 'repeat' and 'each' are valid if we are going to remove the current parser anyway.
rdar://95725895
These allow multi-statement `if`/`switch` expression
branches that can produce a value at the end by
saying `then <expr>`. This is gated behind
`-enable-experimental-feature ThenStatements`
pending evolution discussion.
Only return macros that are valid in their current position, ie. an
attached macro is not valid on a nominal.
Also return freestanding expression macros in code block item position
and handle the new freestanding code item macros.
Resolves rdar://105563583.
Although the declaration of macros doesn't appear in Swift source code
that uses macros, they still operate as declarations within the
language. Rework `Macro` as `MacroDecl`, a generic value declaration,
which appropriate models its place in the language.
The vast majority of this change is in extending all of the various
switches on declaration kinds to account for macros.
When an function has an async alternative, that should be preferred when we are completing in an async context. Thus, the sync method should be marked as not recommended if the current context can handle async methods.
rdar://88354910
Store whether a result is async in the `ContextFreeCodeCompletionResult` and determine whether an async method is used in a sync context when promoting the context free result to a contextual result.
rdar://78317170
Computing the type relation for every item in the code completion cache is way to expensive (~4x slowdown for global completion that imports `SwiftUI`). Instead, compute a type’s supertypes (protocol conformances and superclasses) once and write their USRs to the cache. To compute a type relation we can then check if the contextual type is in the completion item’s supertypes.
This reduces the overhead of computing the type relations (again global completion that imports `SwiftUI`) to ~6% – measured by instructions executed.
Technically, we might miss some conversions like
- retroactive conformances inside another module (because we can’t cache them if that other module isn’t imported)
- complex generic conversions (just too complicated to model using USRs)
Because of this, we never report an `unrelated` type relation for global items but always default to `unknown`.
But I believe this change covers the most common cases and is a good tradeoff between accuracy and performance.
rdar://83846531
Computing the type relation for every item in the code completion cache is way to expensive (~4x slowdown for global completion that imports `SwiftUI`). Instead, compute a type’s supertypes (protocol conformances and superclasses) once and write their USRs to the cache. To compute a type relation we can then check if the contextual type is in the completion item’s supertypes.
This reduces the overhead of computing the type relations (again global completion that imports `SwiftUI`) to ~6% – measured by instructions executed.
Technically, we might miss some conversions like
- retroactive conformances inside another module (because we can’t cache them if that other module isn’t imported)
- complex generic conversions (just too complicated to model using USRs)
Because of this, we never report an `unrelated` type relation for global items but always default to `unknown`.
But I believe this change covers the most common cases and is a good tradeoff between accuracy and performance.
rdar://83846531
