carbon-lang/toolchain/check/testdata/impl/extend_impl.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
//
// AUTOUPDATE

interface HasF {
  fn F();
}

class C {
  extend impl as HasF {
    fn F() {}
  }
}

fn G(c: C) {
  // TODO: These don't do impl lookup, and so refer to the interface members
  // rather than to the impl members.
  C.F();
  c.F();
}

// CHECK:STDOUT: --- extend_impl.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT:   %.1: type = interface_type @HasF [template]
// CHECK:STDOUT:   %C: type = class_type @C [template]
// CHECK:STDOUT:   %.2: type = struct_type {} [template]
// CHECK:STDOUT:   %.3: type = tuple_type () [template]
// CHECK:STDOUT:   %.4: type = ptr_type {} [template]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT:   package: <namespace> = namespace {.HasF = %HasF.decl, .C = %C.decl, .G = %G} [template]
// CHECK:STDOUT:   %HasF.decl = interface_decl @HasF, () [template = constants.%.1]
// CHECK:STDOUT:   %C.decl = class_decl @C, () [template = constants.%C]
// CHECK:STDOUT:   %G: <function> = fn_decl @G [template]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: interface @HasF {
// CHECK:STDOUT:   %F: <function> = fn_decl @F.1 [template]
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT:   .F = %F
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: impl @impl: C as HasF {
// CHECK:STDOUT:   %F: <function> = fn_decl @F.2 [template]
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT:   .F = %F
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: class @C {
// CHECK:STDOUT:   impl_decl @impl, (<unexpected instref inst+6>)
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT:   extend name_scope1
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @F.1();
// CHECK:STDOUT:
// CHECK:STDOUT: fn @F.2() {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT:   return
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @G(%c: C) {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT:   %C.ref: type = name_ref C, file.%C.decl [template = constants.%C]
// CHECK:STDOUT:   %F.ref.loc20: <function> = name_ref F, @HasF.%F [template = @HasF.%F]
// CHECK:STDOUT:   %.loc20: init () = call %F.ref.loc20()
// CHECK:STDOUT:   %c.ref: C = name_ref c, %c
// CHECK:STDOUT:   %F.ref.loc21: <function> = name_ref F, @HasF.%F [template = @HasF.%F]
// CHECK:STDOUT:   %.loc21: init () = call %F.ref.loc21()
// CHECK:STDOUT:   return
// CHECK:STDOUT: }
// CHECK:STDOUT: