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PrintAsClang: Print @cdecl enums in the compatibility header

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Print @cdecl enums in the C section of the compatibility header. Use and
extend the macros to support C compiler clients.

The macro is adapted to the features supported by the client compiler.
It uses an Objective-C style macro with raw type when available and
fallbacks to a simple typedef for C compatibility.
This commit is contained in:
Alexis Laferrière
2025-06-02 13:19:03 -07:00
parent 6d091123f9
commit 138e2daa3e
5 changed files with 217 additions and 11 deletions
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45
test/PrintAsObjC/cdecl-official.swift
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@@ -27,6 +27,22 @@
// CHECK: extern "C" {
// CHECK: #endif
// CHECK: /// Enums
// CHECK: typedef SWIFT_ENUM_NAMED(int, CEnum, "CEnum", closed) {
// CHECK: CEnumA = 0,
// CHECK: CEnumB = 1,
// CHECK: };
// CHECK: typedef SWIFT_ENUM_NAMED(long, CEnumRenamed_CName, "CEnumRenamed", closed) {
// CHECK: CEnumRenamed_CNameA = 0,
// CHECK: CEnumRenamed_CNameB = 1,
// CHECK: };
// CHECK: typedef SWIFT_ENUM_NAMED(char, zCEnumDefinedLate, "zCEnumDefinedLate", closed) {
// CHECK: CEnumDefinedLateA = 0,
// CHECK: CEnumDefinedLateB = 1,
// CHECK: };
/// My documentation
@cdecl("simple")
func a_simple(x: Int, bar y: Int) -> Int { return x }
@@ -62,6 +78,30 @@ func g_nullablePointers(_ x: UnsafeMutableRawPointer,
z: UnsafeMutableRawPointer!) {}
// CHECK: SWIFT_EXTERN void nullable_pointers(void * _Nonnull x, void * _Nullable y, void * _Null_unspecified z) SWIFT_NOEXCEPT;
/// Enums
@cdecl("CEnum")
enum CEnum: CInt { case A, B }
@cdecl("CEnumRenamed_CName")
enum CEnumRenamed: CLong { case A, B }
@cdecl("use_enum")
func h_useCEnum(e: CEnum) -> CEnum { return e }
// CHECK: SWIFT_EXTERN SWIFT_ENUM_TAG CEnum use_enum(SWIFT_ENUM_TAG CEnum e) SWIFT_NOEXCEPT SWIFT_WARN_UNUSED_RESULT;
@cdecl("use_enum_renamed")
func i_useCEnumLong(e: CEnumRenamed) -> CEnumRenamed { return e }
// CHECK: SWIFT_EXTERN SWIFT_ENUM_TAG CEnumRenamed_CName use_enum_renamed(SWIFT_ENUM_TAG CEnumRenamed_CName e) SWIFT_NOEXCEPT SWIFT_WARN_UNUSED_RESULT;
@cdecl("use_enum_late")
func j_useCEnumChar(e: zCEnumDefinedLate) -> zCEnumDefinedLate { return e }
// CHECK: SWIFT_EXTERN SWIFT_ENUM_TAG zCEnumDefinedLate use_enum_late(SWIFT_ENUM_TAG zCEnumDefinedLate e) SWIFT_NOEXCEPT SWIFT_WARN_UNUSED_RESULT;
/// Declare this enum late in the source file and in alphabetical order.
@cdecl("zCEnumDefinedLate")
enum zCEnumDefinedLate: CChar { case A, B }
// CHECK: #if defined(__cplusplus)
// CHECK-NEXT: }
// CHECK-NEXT: #endif
@@ -74,5 +114,10 @@ int main() {
ptrdiff_t x = simple(42, 43);
primitiveTypes(1, 2, 3, 'a', 1.0f, 2.0, true);
has_keyword_arg_names(1, 2);
(void)use_enum(CEnumA);
(void)use_enum_renamed(CEnumRenamed_CNameB);
(void)use_enum_late(zCEnumDefinedLateA);
return_never();
}