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https://github.com/carbon-language/carbon-lang.git
synced 2026-10-05 22:02:55 +01:00
Richard Smith
9007b3952d
Build constraint types from `where` expressions. This is very bare-bones; there's no support for constraining `.Self` or associated types yet, but degenerate cases not involving self-reference work. `==` constraints are syntactically supported but not semantically verified yet, and they aren't used for anything.
25 lines
741 B
Plaintext
25 lines
741 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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// RUN: %{explorer} %s 2>&1 | \
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// RUN: %{FileCheck} --match-full-lines --allow-unused-prefixes=false %s
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// RUN: %{explorer} --parser_debug --trace_file=- %s 2>&1 | \
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// RUN: %{FileCheck} --match-full-lines --allow-unused-prefixes %s
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// AUTOUPDATE: %{explorer} %s
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// CHECK: result: 1
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package ExplorerTest api;
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interface A { fn Get() -> Self; }
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impl i32 as A { fn Get() -> Self { return 1; } }
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alias AlsoA = A where i32 is A and 4 == 4;
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fn F[T:! AlsoA](x: T) -> T { return T.Get(); }
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fn Main() -> i32 {
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var z: i32 = 0;
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return F(z);
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}
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