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https://github.com/carbon-language/carbon-lang.git
synced 2026-09-24 22:02:23 +01:00
Richard Smith
15ec5113aa
Add new prelude interfaces `Negate`, `AddWith`, `SubWith`, and `MulWith`, and use them to implement non-builtin arithmetic operations.
40 lines
1.0 KiB
Plaintext
40 lines
1.0 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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// RUN: %{explorer} %s 2>&1 | \
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// RUN: %{FileCheck} --match-full-lines --allow-unused-prefixes=false %s
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// RUN: %{explorer} --parser_debug --trace_file=- %s 2>&1 | \
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// RUN: %{FileCheck} --match-full-lines --allow-unused-prefixes %s
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// AUTOUPDATE: %{explorer} %s
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// CHECK: result: 0
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package ExplorerTest api;
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interface MyAddWith(T:! Type) {
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fn Op[me: Self](b: T) -> Self;
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}
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class Point {
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var x: i32;
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var y: i32;
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}
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// Allowed: `Self` means `Point` after `as`
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impl Point as MyAddWith(Self) {
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fn Op[me: Point](b: Point) -> Point {
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return {.x = me.x + b.x, .y = me.y + b.y};
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}
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}
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fn DoAddGeneric[T:! Type, U:! MyAddWith(T)](a: U, b: T) -> U {
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return a.Op(b);
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}
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fn Main() -> i32 {
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var a: Point = {.x = 2, .y = 1};
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var b: Point = {.x = 4, .y = 2};
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var p: Point = DoAddGeneric(a, b);
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return p.x - p.y - 3;
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}
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