mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-09-25 19:10:12 +01:00
Jeremy G. Siek
b784458aef
* parameterized impls, first step * bug fixes, comments, etc. * added another test case, fix a bug in impl lookup * simplify tests, removing tuple stuff * don't create impl bindings for -bound implicit parameters * remove a redundant 'private' * CamelCase * add missing backtick * add a comment
49 lines
1.3 KiB
Plaintext
49 lines
1.3 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: %{executable_semantics} %s 2>&1 | \
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// RUN: %{FileCheck} --match-full-lines --allow-unused-prefixes=false %s
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// RUN: %{executable_semantics} --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: %{executable_semantics} %s
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// CHECK: result: 0
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package ExecutableSemanticsTest api;
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interface Number {
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fn Zero() -> Self;
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fn Add[me: Self](other: Self) -> Self;
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}
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class Point(T:! Number) {
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var x: T;
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var y: T;
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}
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external impl i32 as Number {
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fn Zero() -> i32 { return 0; }
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fn Add[me: i32](other: i32) -> i32 { return me + other; }
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}
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external impl forall [U:! Number] Point(U) as Number {
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fn Zero() -> Point(U) { return {.x = U.Zero(), .y = U.Zero() }; }
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fn Add[me: Point(U)](other: Point(U)) -> Point(U) {
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return {.x = me.x.Add(other.x), .y = me.y.Add(other.y)};
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}
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}
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fn Sum[E:! Number](x: E, y: E) -> E {
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var total: E = E.Zero();
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total = total.Add(x);
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total = total.Add(y);
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return total;
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}
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fn Main() -> i32 {
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var p: Point(i32) = {.x = 1, .y = 2};
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var q: Point(i32) = {.x = 4, .y = 3};
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var r: Point(i32) = Sum(p, q);
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return r.x - r.y;
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}
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