mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-09-24 22:02:23 +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
25 lines
703 B
Plaintext
25 lines
703 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: %{not} %{explorer-run}
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// RUN: %{not} %{explorer-run-trace}
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package ExplorerTest api;
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base class A {}
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class B extends A {
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virtual fn Foo[self: Self]() -> i32 { return 0; }
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}
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fn Main() -> i32 {
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var b: B = { .base = {}};
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var bp: B* = &b;
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var ap: A* = bp;
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// Shouldn't look into the vtable for B.
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// CHECK:STDERR: COMPILATION ERROR: {{.*}}/explorer/testdata/class/fail_virtual_method_absent.carbon:[[@LINE+1]]: class A does not have a field named Foo
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return ap->Foo();
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}
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