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https://github.com/carbon-language/carbon-lang.git
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Richard SmithandJon Ross-Perkins
663ed32b1b
Basic support for declaring, specifying the values of, and using associated constants. This is incomplete in various ways. For example, when checking whether a type satisfies a constraint, there is no check that its associated constants match those in the constraint, and name lookup into a value whose type is an associated constant is not supported yet. Co-authored-by: Jon Ross-Perkins <jperkins@google.com>
41 lines
1.0 KiB
Plaintext
41 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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// 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 Frob {
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let Result:! Type;
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fn F[me: Self]() -> Result;
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}
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fn Use[T:! Frob](x: T) -> T.Result {
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var v: T.Result = x.F();
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return v;
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}
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class AlmostI32 {
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var val: i32;
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impl as ImplicitAs(i32) {
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fn Convert[me: Self]() -> i32 { return me.val; }
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}
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}
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impl i32 as Frob where .Result == AlmostI32 {
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fn F[me: Self]() -> AlmostI32 { return {.val = me}; }
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}
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fn Main() -> i32 {
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// Ensure that lookup for
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// i32.(Frob.Result) as ImplicitAs(i32)
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// finds `impl AlmostI32 as ImplicitAs(i32)`.
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return Use(1);
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}
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