mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-10-01 15:25:54 +01:00
Richard Smith
2fef76e58c
`.Self` is modeled as a new kind of expression, `DotSelfExpression`. Name resolution associates each occurrence of a `DotSelfExpression` with a generic binding, much like for an `IdentifierExpression`. Both `:!` bindings and `where` expressions bring `.Self` into scope. The tentative intent is that if there are multiple `.Self`s in scope and they refer to different bindings, the result of using a `.Self` expression is an ambiguity error, but that is not implemented in this patch. Instead, like for `IdentifierExpression`s, we find the innermost enclosing definition of `.Self`. `.Foo` expressions are rewritten to `.Self.Foo`, but this isn't enough to make them do anything useful, because associated constants aren't supported in general yet.
31 lines
828 B
Plaintext
31 lines
828 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: 12
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package ExplorerTest api;
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interface SwizzleWith(T:! Type) {
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fn Op[me: Self](x: T) -> i32;
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}
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impl i32 as SwizzleWith(i32) {
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fn Op[me: Self](x: Self) -> Self { return me * 10 + x; }
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}
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fn F[T:! SwizzleWith(.Self)](v: T, w: T) -> i32 {
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return v.Op(w);
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}
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fn Main() -> i32 {
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var one: i32 = 1;
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var two: i32 = 2;
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return F(one, two);
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}
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