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.
This will allow us to run two different completion kinds and deliver results from both of them.
Also: Compute a unified type context for global lookup. Previously, we always used the expected type context of the last lookup. But really, we should be considering all possible types from all constraint system solutions when computing code completion results from the cache.
Ignore conversion score increases during code completion to make sure we don't filter solutions that might start receiving the best score based on a choice of the code completion token.
Reformatting everything now that we have `llvm` namespaces. I've
separated this from the main commit to help manage merge-conflicts and
for making it a bit easier to read the mega-patch.
This is phase-1 of switching from llvm::Optional to std::optional in the
next rebranch. llvm::Optional was removed from upstream LLVM, so we need
to migrate off rather soon. On Darwin, std::optional, and llvm::Optional
have the same layout, so we don't need to be as concerned about ABI
beyond the name mangling. `llvm::Optional` is only returned from one
function in
```
getStandardTypeSubst(StringRef TypeName,
bool allowConcurrencyManglings);
```
It's the return value, so it should not impact the mangling of the
function, and the layout is the same as `std::optional`, so it should be
mostly okay. This function doesn't appear to have users, and the ABI was
already broken 2 years ago for concurrency and no one seemed to notice
so this should be "okay".
I'm doing the migration incrementally so that folks working on main can
cherry-pick back to the release/5.9 branch. Once 5.9 is done and locked
away, then we can go through and finish the replacement. Since `None`
and `Optional` show up in contexts where they are not `llvm::None` and
`llvm::Optional`, I'm preparing the work now by going through and
removing the namespace unwrapping and making the `llvm` namespace
explicit. This should make it fairly mechanical to go through and
replace llvm::Optional with std::optional, and llvm::None with
std::nullopt. It's also a change that can be brought onto the
release/5.9 with minimal impact. This should be an NFC change.
Expand macros in the specified source file syntactically (without any
module imports, nor typechecking).
Request would look like:
```
{
key.compilerargs: [...]
key.sourcefile: <file name>
key.sourcetext: <source text> (optional)
key.expansions: [<expansion specifier>...]
}
```
`key.compilerargs` are used for getting plugins search paths. If
`key.sourcetext` is not specified, it's loaded from the file system.
Each `<expansion sepecifier>` is
```
{
key.offset: <offset>
key.modulename: <plugin module name>
key.typename: <macro typename>
key.macro_roles: [<macro role UID>...]
}
```
Clients have to provide the module and type names because that's
semantic.
Response is a `CategorizedEdits` just like (semantic) "ExpandMacro"
refactoring. But without `key.buffer_name`. Nested expnasions are not
supported at this point.
Whe completing in parameter packs, we were calling `getParameterAt` with `Res.FuncDeclRef`. But the substitution map in `Res.FuncDeclRef` contained type variables that were allocated in the constraint system’s arena. And that arena had been freed when we call this from `deliverResults`.
The fix is to compute the optional parameters in advance in `sawSolutionImpl`
rdar://109093909
We previously asserted that for a call the function type had the same number of parameters as the declaration. But that’s not true for parameter packs anymore because the parameter pack will be exploded in the function type to account for passing multiple arguments to the pack.
To fix this, use `ConcreteDeclRef` instead of a `ValueDecl`, which has a substitution map and is able to account for the exploded parameter packs when accessed using `getParameterAt`.
rdar://100066716
Showing the type annotation only makes sense if they are not `Void`. That’s consistent with functions where we also don’t show a `Void` return type. Most importantly, we shouldn’t be showing a `Void` type annotation for attached macros.
rdar://108870970
When completing after `names:`, completion should offer the different ways you can specify the names, i.e. `arbitrary`, `named`, etc.
```
@freestanding(declaration, names: #^COMPLETE^#)
```
rdar://108535077
Previously we were skipping the macro’s definition (i.e. the part after `=` in a macro declaration if it wasn’t type checked. Since syntactic rename doesn’t type-check anything, it was thus skippin the macro definition. Add a flag to `ASTWalker` that allows `NameMatcher` to opt-out of this behavior.
for checking duplicated results from multiple type checker solutions.
e.g.
protocol Proto {}
struct Generic<T> {
func retProto() -> some Proto
}
func foo() -> Generic<T1>
func foo() -> Generic<T2>
foo().<COMPLETION>
The return type of `Geric<T1>.retProto()` and `Geric<T2>.retProto()` is
different, but they both spelled 'some Proto'. So IDE consumers don't
care the difference.
rdar://107669173
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.
This hooks up the cursor info infrastructure to be able to pass through multiple, ambiguous results. There are still minor issues that cause solver-based cursor info to not actually report the ambiguous results but those will be fixed in a follow-up PR.
Cursor info only cares about the `doneParsing` callback and not about all the `complete` functions that are now defined in `CodeCompletionCallbacks`. To make the design clearer, split `IDEInspectionCallbacks`.
rdar://105120332
Setting the interface type of a variable, just to reset it to a null type is actually really gross. But quite a few methods further down in the generation of code completion results (such as USR generation) need to get a variable’s type and passing them along in a separate map would be really invasive. So this seems like the least bad solution to me.
We don't need special completion logic for things like `#file` and
`#line` now that they are declared in the standard library. Drop it
and update tests.
Provide ASTWalker with a customization point to specify whether to
check macro arguments (which are type checked but never emitted), the
macro expansion (which is the result of applying the macro and is
actually emitted into the source), or both. Provide answers for the
~115 different ASTWalker visitors throughout the code base.
Fixes rdar://104042945, which concerns checking of effects in
macro arguments---which we shouldn't do.
Add two new fields to refactoring edits:
- A file path if the edit corresponds to a buffer other than the
original file
- A buffer name when the edit is actually source of generated buffer
Macro expansions allow the former as a macro could expand to member
attributes, which may eg. add accessors to each member. The attribute
itself is inside the expansion, but the edit is to the member in the
original source.
The latter will later allow clients to send requests with these names to
allow semantic functionality inside synthesized buffers.
