mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-09-25 07:40:10 +01:00
Adrien Leravat
798a40c886
Features:
* Add basic support for `impl` virtual methods (override virtual method)
* Error on invalid declaration for `impl` and `virtual`, covering simple use cases
* Add `abstract` fn parser-only support
Changes:
* Modify parser to handle new function specifiers, resolve conflicts
* Group `virtual_override` and `FN`, and group `impl_kind` and `IMPL` to avoid ambiguities with around `impl` token parsing
* Add new `VirtualOverride` enum for function declarations, and matching `virt_override() -> VirtualOverride` getter
* Update function declaration logic
Depends on #2462
52 lines
1.2 KiB
Plaintext
52 lines
1.2 KiB
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: e.Foo(): 3
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// CHECK:STDOUT: (*dp).Foo(): 3
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// CHECK:STDOUT: (*dc).Foo(): 3
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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_c: i32;
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virtual fn Foo[self: Self]() -> i32 {
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return self.value_c;
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}
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}
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base class D extends C {
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var value_d: i32;
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impl fn Foo[self: Self]() -> i32 {
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return self.value_d;
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}
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}
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class E extends D {
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var value_e: i32;
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impl fn Foo[self: Self]() -> i32 {
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return self.value_e;
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}
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}
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fn Main() -> i32 {
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var c: C = {.value_c = 1};
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Print("c.Foo(): {0}", c.Foo());
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var d: D = {.value_d = 2, .base = {.value_c = 1}};
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Print("d.Foo(): {0}", d.Foo());
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var e: E = {.value_e = 3, .base={.value_d = 2, .base = {.value_c = 1}}};
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Print("e.Foo(): {0}", e.Foo());
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var dp: D* = &e;
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Print("(*dp).Foo(): {0}", (*dp).Foo());
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var dc: C* = &e;
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Print("(*dc).Foo(): {0}", (*dc).Foo());
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return 0;
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}
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