carbon-language/carbon-lang
1
0
Fork 0
mirror of https://github.com/carbon-language/carbon-lang.git synced 2026-10-05 14:41:06 +01:00
Code Issues Packages Projects Releases 10 Wiki Activity

Support import of typedefs. (#5787)

Browse Source 
Unify code paths for importing classes by name and importing them
indirectly when their type is referenced. Switch to using the general
type import machinery to import all type declarations, which allows
typedef declarations naming importable types to be used too.

Fix up handling of error cases to consistently only produce an Error
InstId after actually producing an error message, so that we can produce
exactly one diagnostic in failure cases.

Remove TODO error for unions that previously was only produced when
importing them indirectly, not when importing them by name. Import of
unions is exactly as complete / incomplete as import of other class
types, so treating them differently doesn't seem necessary.
This commit is contained in:
Richard Smith
2025-07-10 20:46:46 +00:00
committed by GitHub
parent 6ca4e2e089
commit 26e23eac10
10 changed files with 848 additions and 570 deletions
Download Patch File Download Diff File Expand all files Collapse all files
toolchain/check/testdata/interop/cpp/include_paths.carbon
Vendored
+6 -10
View File
@@ -38,16 +38,12 @@ library "[[@TEST_NAME]]";
import Cpp library "stddef.h";
// TODO: Once we can import typedefs, this should work.
// CHECK:STDERR: fail_todo_import_stddef_directly.carbon:[[@LINE+11]]:8: error: semantics TODO: `Unsupported: Declaration type Typedef` [SemanticsTodo]
// CHECK:STDERR: var n: Cpp.size_t;
// TODO: Once we can import `unsigned long` / `unsigned long long`, this should work.
// CHECK:STDERR: fail_todo_import_stddef_directly.carbon:[[@LINE+7]]:8: error: semantics TODO: `Unsupported: Type declaration: size_t` [SemanticsTodo]
// CHECK:STDERR: var n: Cpp.size_t = 42;
// CHECK:STDERR: ^~~~~~~~~~
// CHECK:STDERR: fail_todo_import_stddef_directly.carbon:[[@LINE+8]]:8: note: in `Cpp` name lookup for `size_t` [InCppNameLookup]
// CHECK:STDERR: var n: Cpp.size_t;
// CHECK:STDERR: fail_todo_import_stddef_directly.carbon:[[@LINE+4]]:8: note: in `Cpp` name lookup for `size_t` [InCppNameLookup]
// CHECK:STDERR: var n: Cpp.size_t = 42;
// CHECK:STDERR: ^~~~~~~~~~
// CHECK:STDERR:
// CHECK:STDERR: fail_todo_import_stddef_directly.carbon:[[@LINE+4]]:8: error: member name `size_t` not found in `Cpp` [MemberNameNotFoundInInstScope]
// CHECK:STDERR: var n: Cpp.size_t;
// CHECK:STDERR: ^~~~~~~~~~
// CHECK:STDERR:
var n: Cpp.size_t;
var n: Cpp.size_t = 42;