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josh11bandGeoff Romer
46503c0a9d
This PR is making two main changes to the Explorer and Toolchain: - Replace the `is` keyword in `where SomeType is SomeInterface` with `impls`, so it is `where SomeType impls SomeInterface` - Rewrite uses of the "impls" to something else to avoid, frequently "`impl` declarations" or "implementations", to avoid confusion with the `impls` keyword. --------- Co-authored-by: Geoff Romer <gromer@google.com>
30 lines
830 B
Plaintext
30 lines
830 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: %{explorer-run}
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// RUN: %{explorer-run-trace}
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// CHECK:STDOUT: result: 12
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package ExplorerTest api;
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interface A { fn F() -> i32; }
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interface B { fn F() -> i32; }
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impl i32 as A { fn F() -> i32 { return 1; } }
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impl i32 as B { fn F() -> i32 { return 2; } }
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fn GetA[T:! A](x: T) -> i32 { return x.F(); }
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fn GetAB[T:! B where .Self impls A](x: T) -> i32 {
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// Note that there's no ambiguity in the use of the name F here.
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// `x.F` is `x.(B.F)` because the constraint only treats `B`, not
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// `A`, as a lookup context.
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return 10 * GetA(x) + x.F();
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}
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fn Main() -> i32 {
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var v: i32 = 0;
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return GetAB(v);
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}
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