// 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
// TIP: To test this file alone, run:
// TIP:   bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/check/testdata/interface/no_prelude/default_fn.carbon
// TIP: To dump output, run:
// TIP:   bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/interface/no_prelude/default_fn.carbon

class C {
  interface I {
    // TODO: Use `default` here.
    fn F() {
      // I and F are both complete here, and the impl below is in scope.
      var c: C = {};
      c.(I.F)();
    }
  }

  impl C as I {
    fn F() {}
  }
}

// CHECK:STDOUT: --- default_fn.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT:   %C: type = class_type @C [template]
// CHECK:STDOUT:   %I.type: type = facet_type <@I> [template]
// CHECK:STDOUT:   %Self: %I.type = bind_symbolic_name Self, 0 [symbolic]
// CHECK:STDOUT:   %F.type.0b5: type = fn_type @F.1 [template]
// CHECK:STDOUT:   %empty_tuple.type: type = tuple_type () [template]
// CHECK:STDOUT:   %F.20c: %F.type.0b5 = struct_value () [template]
// CHECK:STDOUT:   %I.assoc_type: type = assoc_entity_type %I.type [template]
// CHECK:STDOUT:   %assoc0: %I.assoc_type = assoc_entity element0, @I.%F.decl [template]
// CHECK:STDOUT:   %impl_witness: <witness> = impl_witness (@impl.%F.decl) [template]
// CHECK:STDOUT:   %F.type.4a2: type = fn_type @F.2 [template]
// CHECK:STDOUT:   %F.eb2: %F.type.4a2 = struct_value () [template]
// CHECK:STDOUT:   %I.facet: %I.type = facet_value %C, %impl_witness [template]
// CHECK:STDOUT:   %empty_struct_type: type = struct_type {} [template]
// CHECK:STDOUT:   %complete_type: <witness> = complete_type_witness %empty_struct_type [template]
// CHECK:STDOUT:   %C.val: %C = struct_value () [template]
// CHECK:STDOUT:   %.eab: type = fn_type_with_self_type %F.type.0b5, %I.facet [template]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT:   package: <namespace> = namespace [template] {
// CHECK:STDOUT:     .C = %C.decl
// CHECK:STDOUT:   }
// CHECK:STDOUT:   %C.decl: type = class_decl @C [template = constants.%C] {} {}
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: interface @I {
// CHECK:STDOUT:   %Self: %I.type = bind_symbolic_name Self, 0 [symbolic = constants.%Self]
// CHECK:STDOUT:   %F.decl: %F.type.0b5 = fn_decl @F.1 [template = constants.%F.20c] {} {}
// CHECK:STDOUT:   %assoc0: %I.assoc_type = assoc_entity element0, %F.decl [template = constants.%assoc0]
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT:   .Self = %Self
// CHECK:STDOUT:   .F = %assoc0
// CHECK:STDOUT:   witness = (%F.decl)
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: impl @impl: %C.ref as %I.ref {
// CHECK:STDOUT:   %F.decl: %F.type.4a2 = fn_decl @F.2 [template = constants.%F.eb2] {} {}
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT:   .F = %F.decl
// CHECK:STDOUT:   witness = @C.%impl_witness
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: class @C {
// CHECK:STDOUT:   %I.decl: type = interface_decl @I [template = constants.%I.type] {} {}
// CHECK:STDOUT:   impl_decl @impl [template] {} {
// CHECK:STDOUT:     %C.ref: type = name_ref C, file.%C.decl [template = constants.%C]
// CHECK:STDOUT:     %I.ref: type = name_ref I, @C.%I.decl [template = constants.%I.type]
// CHECK:STDOUT:   }
// CHECK:STDOUT:   %impl_witness: <witness> = impl_witness (@impl.%F.decl) [template = constants.%impl_witness]
// CHECK:STDOUT:   %complete_type: <witness> = complete_type_witness %empty_struct_type [template = constants.%complete_type]
// CHECK:STDOUT:   complete_type_witness = %complete_type
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT:   .Self = constants.%C
// CHECK:STDOUT:   .I = %I.decl
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: generic fn @F.1(@I.%Self: %I.type) {
// CHECK:STDOUT: !definition:
// CHECK:STDOUT:
// CHECK:STDOUT:   fn() {
// CHECK:STDOUT:   !entry:
// CHECK:STDOUT:     name_binding_decl {
// CHECK:STDOUT:       %c.patt: %C = binding_pattern c
// CHECK:STDOUT:       %.loc16_7.1: %C = var_pattern %c.patt
// CHECK:STDOUT:     }
// CHECK:STDOUT:     %c.var: ref %C = var c
// CHECK:STDOUT:     %.loc16_19.1: %empty_struct_type = struct_literal ()
// CHECK:STDOUT:     %.loc16_19.2: init %C = class_init (), %c.var [template = constants.%C.val]
// CHECK:STDOUT:     %.loc16_7.2: init %C = converted %.loc16_19.1, %.loc16_19.2 [template = constants.%C.val]
// CHECK:STDOUT:     assign %c.var, %.loc16_7.2
// CHECK:STDOUT:     %C.ref: type = name_ref C, file.%C.decl [template = constants.%C]
// CHECK:STDOUT:     %c: ref %C = bind_name c, %c.var
// CHECK:STDOUT:     %c.ref: ref %C = name_ref c, %c
// CHECK:STDOUT:     %I.ref: type = name_ref I, @C.%I.decl [template = constants.%I.type]
// CHECK:STDOUT:     %F.ref: %I.assoc_type = name_ref F, @I.%assoc0 [template = constants.%assoc0]
// CHECK:STDOUT:     %impl.elem0: %.eab = impl_witness_access constants.%impl_witness, element0 [template = constants.%F.eb2]
// CHECK:STDOUT:     %F.call: init %empty_tuple.type = call %impl.elem0()
// CHECK:STDOUT:     return
// CHECK:STDOUT:   }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @F.2() {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT:   return
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: specific @F.1(constants.%Self) {}
// CHECK:STDOUT:
// CHECK:STDOUT: specific @F.1(constants.%I.facet) {}
// CHECK:STDOUT: