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Richard Smith
4daaa4866f
Also make minor updates to the skeletal design in docs/design/name_lookup.md following #2113, as there are no longer any prelude names that are made available to unqualified name lookup by default. Add `type` to the keyword list in docs/design/lexical_conventions/words.md, following #2360.
33 lines
1.0 KiB
Plaintext
33 lines
1.0 KiB
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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interface MyAddWith(T:! type) {
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let Result:! type;
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fn Op[self: Self](other: T) -> Result;
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}
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constraint MyAdd {
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extends MyAddWith(Self) where .Result = Self;
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}
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external impl i32 as MyAdd {
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fn Op[self: i32](other: i32) -> i32 { return self + other; }
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}
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fn Main() -> i32 {
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let n: i32 = 1;
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// TODO: This should be valid, but isn't representable in our current
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// MemberName value. We will likely need MemberName to remember the
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// constraint as written, not only the interface in which the member was
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// found.
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// CHECK:STDERR: COMPILATION ERROR: {{.*}}/explorer/testdata/named_constraint/fail_compound_member_access.carbon:[[@LINE+1]]: could not find implementation of interface MyAddWith(T = Self) for i32
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return n.(MyAdd.Op)(n);
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}
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