mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-10-04 22:02:52 +01:00
Adrien Leravat
8301258ef8
Features: * Add `virtual` virtual override keyword for functions * Support `virtual` class methods using dynamic dispatch Changes: * Add `vtable` in `NominalClassType`, * Add `NominalClassValue**` in class values pointing to descendant-most class * Resolve virtual methods during member lookup Limitations: * Does not include yet `impl`, `abstract` virtual override keywords, or the complete logic for virtual function declaration Depends on #2460 Relates to #1881 Relates to #2493
40 lines
918 B
Plaintext
40 lines
918 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.Foo(): 1
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// CHECK:STDOUT: d.Foo(): 2
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// CHECK:STDOUT: (*cp).Foo(): 2
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// CHECK:STDOUT: result: 0
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package ExplorerTest api;
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base class C {
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var value: i32;
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virtual fn Foo[self: Self]() -> i32 {
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return self.value;
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}
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}
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base class D extends C {
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var value: i32;
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// TODO: This should instead use `impl` when supported
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virtual fn Foo[self: Self]() -> i32 {
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return self.value;
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}
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}
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fn Main() -> i32 {
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var c: C = {.value = 1};
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Print("c.Foo(): {0}", c.Foo());
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var d: D = {.value = 2, .base = {.value = 1}};
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Print("d.Foo(): {0}", d.Foo());
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var cp: C* = &d;
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Print("(*cp).Foo(): {0}", (*cp).Foo());
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return 0;
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}
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