carbon-lang/explorer/testdata/constraint/dot_self_is_other.carbon

// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
// Exceptions. See /LICENSE for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
// RUN: %{explorer} %s 2>&1 | \
// RUN:   %{FileCheck} --match-full-lines --allow-unused-prefixes=false %s
// RUN: %{explorer} --parser_debug --trace_file=- %s 2>&1 | \
// RUN:   %{FileCheck} --match-full-lines --allow-unused-prefixes %s
// AUTOUPDATE: %{explorer} %s
// CHECK: result: 12

package ExplorerTest api;

interface A { fn F() -> i32; }
interface B { fn F() -> i32; }

impl i32 as A { fn F() -> i32 { return 1; } }
impl i32 as B { fn F() -> i32 { return 2; } }

fn GetA[T:! A](x: T) -> i32 { return x.F(); }
fn GetAB[T:! B where .Self is A](x: T) -> i32 {
  // Note that there's no ambiguity in the use of the name F here.
  // `x.F` is `x.(B.F)` because the constraint only treats `B`, not
  // `A`, as a lookup context.
  return 10 * GetA(x) + x.F();
}

fn Main() -> i32 {
  var v: i32 = 0;
  return GetAB(v);
}