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https://github.com/carbon-language/carbon-lang.git
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9299e51511
Features: * Adds support for [subtyping](https://github.com/carbon-language/carbon-lang/blob/trunk/docs/design/classes.md#subtyping) for local variables, and function parameters Changes: * Update function parameter `Deduce` to handle subtyping * Update `InstantiateType` to support `PointerType` * Update `Convert` to support convertion from child class to a base class Relates to #1881 Co-authored-by: Jon Ross-Perkins <jperkins@google.com> Co-authored-by: Geoff Romer <gromer@google.com>
43 lines
862 B
Plaintext
43 lines
862 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: (*c).a: 1
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// CHECK:STDOUT: (*c).Foo(): 1
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// CHECK:STDOUT: (*c).Bar(): 1
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// CHECK:STDOUT: result: 0
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package ExplorerTest api;
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abstract class C {
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var a: i32;
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fn Foo[self: Self]() -> i32 {
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return 1;
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}
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fn Bar() -> i32 {
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return 1;
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}
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}
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class D extends C {
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var b: i32;
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fn Foo[self: Self]() -> i32 {
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return 2;
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}
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fn Bar() -> i32 {
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return 2;
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}
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}
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fn Main() -> i32 {
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var d: D = { .base = {.a = 1}, .b = 2 };
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var c: C* = &d;
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Print("(*c).a: {0}", (*c).a);
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Print("(*c).Foo(): {0}", (*c).Foo());
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Print("(*c).Bar(): {0}", (*c).Bar());
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return 0;
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}
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