mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-10-04 09:01:04 +01:00
Richard Smith
c8f18446f4
Allow explicit conversion from a tuple of `T1`, `T2`, ... to a tuple of `U1`, `U2`, ... if each element has an explicit conversion. Also add a comment to existing `ImplicitAs` impl for tuples explaining its purpose.
28 lines
751 B
Plaintext
28 lines
751 B
Plaintext
// 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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// AUTOUPDATE
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// RUN: %{not} %{explorer-run}
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// RUN: %{not} %{explorer-run-trace}
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package ExplorerTest api;
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class A {
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var a: i32;
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}
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class B {
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var b: i32;
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}
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external impl A as As(B) {
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fn Convert[self: Self]() -> B { return {.b = self.a}; }
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}
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fn Main() -> i32 {
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var a: (i32, A) = (1, {.a = 2});
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// CHECK:STDERR: COMPILATION ERROR: {{.*}}/explorer/testdata/tuple/fail_implicit_convert_with_as.carbon:[[@LINE+1]]: type error in name binding: '(i32, class A)' is not implicitly convertible to '(i32, class B)'
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var b: (i32, B) = a;
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return 0;
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}
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