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Refactor function return type representation (#6463)

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This separates the return type from the return pattern, and replaces the
return pattern with a block of return patterns. This is a step toward
support for `ref` returns (where there's no corresponding return
pattern) and compund-form returns (where there may be multiple return
patterns).
This commit is contained in:
Geoff Romer
2025-12-10 18:34:23 +00:00
committed by GitHub
parent 77918d023b
commit bf45b1cbf5
57 changed files with 1668 additions and 1532 deletions
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toolchain/check/testdata/function/declaration/fail_import_incomplete_return.carbon
Vendored
+8 -8
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@@ -31,9 +31,9 @@ fn Call() {
// CHECK:STDERR: fail_incomplete_return.carbon:[[@LINE-12]]:1: note: class was forward declared here [ClassForwardDeclaredHere]
// CHECK:STDERR: class C;
// CHECK:STDERR: ^~~~~~~~
// CHECK:STDERR: fail_incomplete_return.carbon:[[@LINE-11]]:18: note: return type declared here [IncompleteReturnTypeHere]
// CHECK:STDERR: fail_incomplete_return.carbon:[[@LINE-11]]:21: note: return type declared here [IncompleteReturnTypeHere]
// CHECK:STDERR: fn ReturnCUsed() -> C;
// CHECK:STDERR: ^~~~
// CHECK:STDERR: ^
// CHECK:STDERR:
ReturnCUsed();
// CHECK:STDERR: fail_incomplete_return.carbon:[[@LINE+10]]:3: error: function returns incomplete type `D` [IncompleteTypeInFunctionReturnType]
@@ -42,9 +42,9 @@ fn Call() {
// CHECK:STDERR: fail_incomplete_return.carbon:[[@LINE-22]]:1: note: class was forward declared here [ClassForwardDeclaredHere]
// CHECK:STDERR: class D;
// CHECK:STDERR: ^~~~~~~~
// CHECK:STDERR: fail_incomplete_return.carbon:[[@LINE-20]]:18: note: return type declared here [IncompleteReturnTypeHere]
// CHECK:STDERR: fail_incomplete_return.carbon:[[@LINE-20]]:21: note: return type declared here [IncompleteReturnTypeHere]
// CHECK:STDERR: fn ReturnDUsed() -> D;
// CHECK:STDERR: ^~~~
// CHECK:STDERR: ^
// CHECK:STDERR:
ReturnDUsed();
}
@@ -66,9 +66,9 @@ fn CallFAndGIncomplete() {
// CHECK:STDERR: class C;
// CHECK:STDERR: ^~~~~~~~
// CHECK:STDERR: fail_use_imported.carbon:[[@LINE-10]]:1: in import [InImport]
// CHECK:STDERR: fail_incomplete_return.carbon:7:20: note: return type declared here [IncompleteReturnTypeHere]
// CHECK:STDERR: fail_incomplete_return.carbon:7:23: note: return type declared here [IncompleteReturnTypeHere]
// CHECK:STDERR: fn ReturnCUnused() -> C;
// CHECK:STDERR: ^~~~
// CHECK:STDERR: ^
// CHECK:STDERR:
ReturnCUnused();
// CHECK:STDERR: fail_use_imported.carbon:[[@LINE+12]]:3: error: function returns incomplete type `C` [IncompleteTypeInFunctionReturnType]
@@ -79,9 +79,9 @@ fn CallFAndGIncomplete() {
// CHECK:STDERR: class C;
// CHECK:STDERR: ^~~~~~~~
// CHECK:STDERR: fail_use_imported.carbon:[[@LINE-23]]:1: in import [InImport]
// CHECK:STDERR: fail_incomplete_return.carbon:8:18: note: return type declared here [IncompleteReturnTypeHere]
// CHECK:STDERR: fail_incomplete_return.carbon:8:21: note: return type declared here [IncompleteReturnTypeHere]
// CHECK:STDERR: fn ReturnCUsed() -> C;
// CHECK:STDERR: ^~~~
// CHECK:STDERR: ^
// CHECK:STDERR:
ReturnCUsed();
ReturnDUnused();