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Add support for exporting Carbon functions as constructors. (#7560)
Co-authored-by: Nicholas Bishop <nbishop@nbishop.net>
This commit is contained in:
Geoff Romer
co-authored by
Nicholas Bishop
Nicholas Bishop
parent
de68b19784
commit
3cb143e878
@@ -0,0 +1,173 @@
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// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
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// Exceptions. See /LICENSE for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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// INCLUDE-FILE: toolchain/testing/testdata/min_prelude/int.carbon
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//
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// AUTOUPDATE
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// TIP: To test this file alone, run:
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// TIP: bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/check/testdata/interop/cpp/function/export/constructor.carbon
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// TIP: To dump output, run:
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// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/interop/cpp/function/export/constructor.carbon
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// --- call_constructor.carbon
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library "[[@TEST_NAME]]";
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import Cpp;
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class OneArg {
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fn OneArg(i: i32) -> Self;
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}
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inline Cpp '''
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void f() {
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Carbon::OneArg a(42);
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}
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''';
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// --- fail_factory_is_method.carbon
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library "[[@TEST_NAME]]";
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import Cpp;
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class OneArg {
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fn OneArg(self, i: i32) -> Self;
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}
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inline Cpp '''
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void f() {
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// CHECK:STDERR: fail_factory_is_method.carbon:[[@LINE+13]]:18: error: no matching constructor for initialization of 'Carbon::OneArg' [CppInteropParseError]
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// CHECK:STDERR: 24 | Carbon::OneArg a(42);
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// CHECK:STDERR: | ^ ~~
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// CHECK:STDERR: fail_factory_is_method.carbon:[[@LINE-9]]:14: note: candidate constructor (the implicit copy constructor) not viable: no known conversion from 'int' to 'const OneArg' for 1st argument [CppInteropParseNote]
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// CHECK:STDERR: 5 | class OneArg {
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// CHECK:STDERR: | ^
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// CHECK:STDERR: fail_factory_is_method.carbon:[[@LINE-12]]:14: note: candidate constructor (the implicit move constructor) not viable: no known conversion from 'int' to 'OneArg' for 1st argument [CppInteropParseNote]
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// CHECK:STDERR: 5 | class OneArg {
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// CHECK:STDERR: | ^
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// CHECK:STDERR: fail_factory_is_method.carbon:[[@LINE-15]]:14: note: candidate constructor (the implicit default constructor) not viable: requires 0 arguments, but 1 was provided [CppInteropParseNote]
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// CHECK:STDERR: 5 | class OneArg {
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// CHECK:STDERR: | ^
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// CHECK:STDERR:
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Carbon::OneArg a(42);
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}
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''';
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// --- fail_factory_doesnt_return_self.carbon
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library "[[@TEST_NAME]]";
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import Cpp;
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class OneArg {
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fn OneArg(i: i32) -> i32;
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}
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inline Cpp '''
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void f() {
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// CHECK:STDERR: fail_factory_doesnt_return_self.carbon:[[@LINE+13]]:18: error: no matching constructor for initialization of 'Carbon::OneArg' [CppInteropParseError]
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// CHECK:STDERR: 24 | Carbon::OneArg a(42);
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// CHECK:STDERR: | ^ ~~
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// CHECK:STDERR: fail_factory_doesnt_return_self.carbon:[[@LINE-9]]:14: note: candidate constructor (the implicit copy constructor) not viable: no known conversion from 'int' to 'const OneArg' for 1st argument [CppInteropParseNote]
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// CHECK:STDERR: 5 | class OneArg {
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// CHECK:STDERR: | ^
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// CHECK:STDERR: fail_factory_doesnt_return_self.carbon:[[@LINE-12]]:14: note: candidate constructor (the implicit move constructor) not viable: no known conversion from 'int' to 'OneArg' for 1st argument [CppInteropParseNote]
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// CHECK:STDERR: 5 | class OneArg {
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// CHECK:STDERR: | ^
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// CHECK:STDERR: fail_factory_doesnt_return_self.carbon:[[@LINE-15]]:14: note: candidate constructor (the implicit default constructor) not viable: requires 0 arguments, but 1 was provided [CppInteropParseNote]
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// CHECK:STDERR: 5 | class OneArg {
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// CHECK:STDERR: | ^
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// CHECK:STDERR:
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Carbon::OneArg a(42);
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}
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''';
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// --- fail_factory_returns_by_ref.carbon
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library "[[@TEST_NAME]]";
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import Cpp;
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class OneArg {
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fn OneArg(i: i32) -> ref Self;
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}
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inline Cpp '''
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void f() {
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// CHECK:STDERR: fail_factory_returns_by_ref.carbon:[[@LINE+13]]:18: error: no matching constructor for initialization of 'Carbon::OneArg' [CppInteropParseError]
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// CHECK:STDERR: 24 | Carbon::OneArg a(42);
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// CHECK:STDERR: | ^ ~~
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// CHECK:STDERR: fail_factory_returns_by_ref.carbon:[[@LINE-9]]:14: note: candidate constructor (the implicit copy constructor) not viable: no known conversion from 'int' to 'const OneArg' for 1st argument [CppInteropParseNote]
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// CHECK:STDERR: 5 | class OneArg {
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// CHECK:STDERR: | ^
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// CHECK:STDERR: fail_factory_returns_by_ref.carbon:[[@LINE-12]]:14: note: candidate constructor (the implicit move constructor) not viable: no known conversion from 'int' to 'OneArg' for 1st argument [CppInteropParseNote]
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// CHECK:STDERR: 5 | class OneArg {
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// CHECK:STDERR: | ^
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// CHECK:STDERR: fail_factory_returns_by_ref.carbon:[[@LINE-15]]:14: note: candidate constructor (the implicit default constructor) not viable: requires 0 arguments, but 1 was provided [CppInteropParseNote]
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// CHECK:STDERR: 5 | class OneArg {
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// CHECK:STDERR: | ^
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// CHECK:STDERR:
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Carbon::OneArg a(42);
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}
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''';
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// --- fail_todo_call_generic_constructor.carbon
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library "[[@TEST_NAME]]";
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import Cpp;
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class GenericConstructor {
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// CHECK:STDERR: fail_todo_call_generic_constructor.carbon:[[@LINE+4]]:3: error: semantics TODO: `support exporting generic member functions` [SemanticsTodo]
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// CHECK:STDERR: fn GenericConstructor[T: type](_: T) -> Self {
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// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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// CHECK:STDERR:
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fn GenericConstructor[T: type](_: T) -> Self {
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return {};
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}
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}
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inline Cpp '''
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void f() {
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// CHECK:STDERR: fail_todo_call_generic_constructor.carbon:[[@LINE+13]]:30: error: no matching constructor for initialization of 'Carbon::GenericConstructor' [CppInteropParseError]
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// CHECK:STDERR: 30 | Carbon::GenericConstructor b(0);
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// CHECK:STDERR: | ^ ~
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// CHECK:STDERR: fail_todo_call_generic_constructor.carbon:[[@LINE-15]]:26: note: candidate constructor (the implicit copy constructor) not viable: no known conversion from 'int' to 'const GenericConstructor' for 1st argument [CppInteropParseNote]
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// CHECK:STDERR: 5 | class GenericConstructor {
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// CHECK:STDERR: | ^
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// CHECK:STDERR: fail_todo_call_generic_constructor.carbon:[[@LINE-18]]:26: note: candidate constructor (the implicit move constructor) not viable: no known conversion from 'int' to 'GenericConstructor' for 1st argument [CppInteropParseNote]
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// CHECK:STDERR: 5 | class GenericConstructor {
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// CHECK:STDERR: | ^
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// CHECK:STDERR: fail_todo_call_generic_constructor.carbon:[[@LINE-21]]:26: note: candidate constructor (the implicit default constructor) not viable: requires 0 arguments, but 1 was provided [CppInteropParseNote]
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// CHECK:STDERR: 5 | class GenericConstructor {
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// CHECK:STDERR: | ^
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// CHECK:STDERR:
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Carbon::GenericConstructor b(0);
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}
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''';
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// --- fail_todo_call_generic_class_constructor.carbon
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library "[[@TEST_NAME]]";
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import Cpp;
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class GenericClass(T: type) {
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fn GenericClass(_: T) -> Self {
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return {};
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}
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}
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inline Cpp '''
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void f() {
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// CHECK:STDERR: fail_todo_call_generic_class_constructor.carbon:[[@LINE+12]]:11: error: no member named 'GenericClass' in namespace 'Carbon' [CppInteropParseError]
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// CHECK:STDERR: 25 | Carbon::GenericClass<int> c(0);
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// CHECK:STDERR: | ^~~~~~~~~~~~
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// CHECK:STDERR:
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// CHECK:STDERR: fail_todo_call_generic_class_constructor.carbon:[[@LINE+8]]:27: error: expected '(' for function-style cast or type construction [CppInteropParseError]
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// CHECK:STDERR: 25 | Carbon::GenericClass<int> c(0);
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// CHECK:STDERR: | ~~~^
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// CHECK:STDERR:
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// CHECK:STDERR: fail_todo_call_generic_class_constructor.carbon:[[@LINE+4]]:29: error: use of undeclared identifier 'c' [CppInteropParseError]
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// CHECK:STDERR: 25 | Carbon::GenericClass<int> c(0);
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// CHECK:STDERR: | ^
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// CHECK:STDERR:
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Carbon::GenericClass<int> c(0);
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}
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''';
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@@ -373,6 +373,7 @@ void G() {
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// CHECK:STDOUT: !members:
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// CHECK:STDOUT: .Self = constants.%A
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// CHECK:STDOUT: .I = <poisoned>
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// CHECK:STDOUT: .A = <poisoned>
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: class @B {
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@@ -386,6 +387,7 @@ void G() {
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// CHECK:STDOUT: !members:
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// CHECK:STDOUT: .Self = constants.%B
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// CHECK:STDOUT: .I = <poisoned>
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// CHECK:STDOUT: .B = <poisoned>
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: generic fn @I.WithSelf.Doit(@I.%Self: %I.type) {
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