mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-09-24 20:40:11 +01:00
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>
32 lines
623 B
Plaintext
32 lines
623 B
Plaintext
// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
|
|
// Exceptions. See /LICENSE for license information.
|
|
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
|
//
|
|
// AUTOUPDATE
|
|
// RUN: %{explorer-run}
|
|
// RUN: %{explorer-run-trace}
|
|
// CHECK:STDOUT: (*c).a: 1
|
|
// CHECK:STDOUT: Foo(&d): 1
|
|
// CHECK:STDOUT: result: 0
|
|
|
|
package ExplorerTest api;
|
|
|
|
base class C {
|
|
var a: i32;
|
|
}
|
|
|
|
class D extends C {
|
|
}
|
|
|
|
fn Foo(c: C*) -> i32 {
|
|
return (*c).a;
|
|
}
|
|
|
|
fn Main() -> i32 {
|
|
var d: D = { .base = {.a = 1} };
|
|
var c: C* = &d;
|
|
Print("(*c).a: {0}", (*c).a);
|
|
Print("Foo(&d): {0}", Foo(&d));
|
|
return 0;
|
|
}
|