carbon-lang/toolchain/check/testdata/interface/default_fn.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
//
// INCLUDE-FILE: toolchain/testing/testdata/min_prelude/convert.carbon
// TODO: Add ranges and switch to "--dump-sem-ir-ranges=only".
// EXTRA-ARGS: --dump-sem-ir-ranges=if-present
//
// AUTOUPDATE
// TIP: To test this file alone, run:
// TIP:   bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/check/testdata/interface/default_fn.carbon
// TIP: To dump output, run:
// TIP:   bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/interface/default_fn.carbon

class C {
  interface I {
    // TODO: Use `default` here.
    fn F[self: Self]() {
      // 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[self: Self]() {}
  }
}

// CHECK:STDOUT: --- default_fn.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT:   %C: type = class_type @C [concrete]
// CHECK:STDOUT:   %I.type: type = facet_type <@I> [concrete]
// CHECK:STDOUT:   %Self.6ef: %I.type = bind_symbolic_name Self, 0 [symbolic]
// CHECK:STDOUT:   %Self.as_type.390: type = facet_access_type %Self.6ef [symbolic]
// CHECK:STDOUT:   %pattern_type.b2f: type = pattern_type %Self.as_type.390 [symbolic]
// CHECK:STDOUT:   %I.F.type: type = fn_type @I.F [concrete]
// CHECK:STDOUT:   %empty_tuple.type: type = tuple_type () [concrete]
// CHECK:STDOUT:   %I.F: %I.F.type = struct_value () [concrete]
// CHECK:STDOUT:   %I.assoc_type: type = assoc_entity_type @I [concrete]
// CHECK:STDOUT:   %assoc0.a33: %I.assoc_type = assoc_entity element0, @I.%I.F.decl [concrete]
// CHECK:STDOUT:   %I.impl_witness: <witness> = impl_witness @C.%I.impl_witness_table [concrete]
// CHECK:STDOUT:   %pattern_type.c48: type = pattern_type %C [concrete]
// CHECK:STDOUT:   %C.as.I.impl.F.type: type = fn_type @C.as.I.impl.F [concrete]
// CHECK:STDOUT:   %C.as.I.impl.F: %C.as.I.impl.F.type = struct_value () [concrete]
// CHECK:STDOUT:   %I.facet: %I.type = facet_value %C, (%I.impl_witness) [concrete]
// CHECK:STDOUT:   %Destroy.type: type = facet_type <@Destroy> [concrete]
// CHECK:STDOUT:   %pattern_type.f6d: type = pattern_type auto [concrete]
// CHECK:STDOUT:   %Destroy.impl_witness.edd: <witness> = impl_witness @C.%Destroy.impl_witness_table [concrete]
// CHECK:STDOUT:   %ptr.019: type = ptr_type %C [concrete]
// CHECK:STDOUT:   %pattern_type.44a: type = pattern_type %ptr.019 [concrete]
// CHECK:STDOUT:   %C.as.Destroy.impl.Op.type: type = fn_type @C.as.Destroy.impl.Op [concrete]
// CHECK:STDOUT:   %C.as.Destroy.impl.Op: %C.as.Destroy.impl.Op.type = struct_value () [concrete]
// CHECK:STDOUT:   %empty_struct_type: type = struct_type {} [concrete]
// CHECK:STDOUT:   %complete_type: <witness> = complete_type_witness %empty_struct_type [concrete]
// CHECK:STDOUT:   %require_complete.8cb: <witness> = require_complete_type %Self.as_type.390 [symbolic]
// CHECK:STDOUT:   %C.val: %C = struct_value () [concrete]
// CHECK:STDOUT:   %.e5b: type = fn_type_with_self_type %I.F.type, %I.facet [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT:   %Core: <namespace> = namespace file.%Core.import, [concrete] {
// CHECK:STDOUT:     .Destroy = %Core.Destroy
// CHECK:STDOUT:     import Core//prelude
// CHECK:STDOUT:     import Core//prelude/...
// CHECK:STDOUT:   }
// CHECK:STDOUT:   %Core.Destroy: type = import_ref Core//prelude/parts/destroy, Destroy, loaded [concrete = constants.%Destroy.type]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT:   package: <namespace> = namespace [concrete] {
// CHECK:STDOUT:     .Core = imports.%Core
// CHECK:STDOUT:     .C = %C.decl
// CHECK:STDOUT:   }
// CHECK:STDOUT:   %Core.import = import Core
// CHECK:STDOUT:   %C.decl: type = class_decl @C [concrete = constants.%C] {} {}
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: interface @I {
// CHECK:STDOUT:   %Self: %I.type = bind_symbolic_name Self, 0 [symbolic = constants.%Self.6ef]
// CHECK:STDOUT:   %I.F.decl: %I.F.type = fn_decl @I.F [concrete = constants.%I.F] {
// CHECK:STDOUT:     %self.patt: @I.F.%pattern_type (%pattern_type.b2f) = binding_pattern self [concrete]
// CHECK:STDOUT:     %self.param_patt: @I.F.%pattern_type (%pattern_type.b2f) = value_param_pattern %self.patt, call_param0 [concrete]
// CHECK:STDOUT:   } {
// CHECK:STDOUT:     %self.param: @I.F.%Self.as_type.loc18_16.1 (%Self.as_type.390) = value_param call_param0
// CHECK:STDOUT:     %.loc18_16.1: type = splice_block %.loc18_16.2 [symbolic = %Self.as_type.loc18_16.1 (constants.%Self.as_type.390)] {
// CHECK:STDOUT:       %Self.ref: %I.type = name_ref Self, @I.%Self [symbolic = %Self (constants.%Self.6ef)]
// CHECK:STDOUT:       %Self.as_type.loc18_16.2: type = facet_access_type %Self.ref [symbolic = %Self.as_type.loc18_16.1 (constants.%Self.as_type.390)]
// CHECK:STDOUT:       %.loc18_16.2: type = converted %Self.ref, %Self.as_type.loc18_16.2 [symbolic = %Self.as_type.loc18_16.1 (constants.%Self.as_type.390)]
// CHECK:STDOUT:     }
// CHECK:STDOUT:     %self: @I.F.%Self.as_type.loc18_16.1 (%Self.as_type.390) = bind_name self, %self.param
// CHECK:STDOUT:   }
// CHECK:STDOUT:   %assoc0: %I.assoc_type = assoc_entity element0, %I.F.decl [concrete = constants.%assoc0.a33]
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT:   .Self = %Self
// CHECK:STDOUT:   .F = %assoc0
// CHECK:STDOUT:   .C = <poisoned>
// CHECK:STDOUT:   .I = <poisoned>
// CHECK:STDOUT:   witness = (%I.F.decl)
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: impl @C.as.I.impl: %C.ref as %I.ref {
// CHECK:STDOUT:   %C.as.I.impl.F.decl: %C.as.I.impl.F.type = fn_decl @C.as.I.impl.F [concrete = constants.%C.as.I.impl.F] {
// CHECK:STDOUT:     %self.patt: %pattern_type.c48 = binding_pattern self [concrete]
// CHECK:STDOUT:     %self.param_patt: %pattern_type.c48 = value_param_pattern %self.patt, call_param0 [concrete]
// CHECK:STDOUT:   } {
// CHECK:STDOUT:     %self.param: %C = value_param call_param0
// CHECK:STDOUT:     %Self.ref: type = name_ref Self, @C.as.I.impl.%C.ref [concrete = constants.%C]
// CHECK:STDOUT:     %self: %C = bind_name self, %self.param
// CHECK:STDOUT:   }
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT:   .F = %C.as.I.impl.F.decl
// CHECK:STDOUT:   witness = @C.%I.impl_witness
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: impl @C.as.Destroy.impl: @C.%Self.ref as constants.%Destroy.type {
// CHECK:STDOUT:   %C.as.Destroy.impl.Op.decl: %C.as.Destroy.impl.Op.type = fn_decl @C.as.Destroy.impl.Op [concrete = constants.%C.as.Destroy.impl.Op] {
// CHECK:STDOUT:     %self.patt: %pattern_type.44a = binding_pattern self [concrete]
// CHECK:STDOUT:     %self.param_patt: %pattern_type.44a = value_param_pattern %self.patt, call_param0 [concrete]
// CHECK:STDOUT:     %.loc15: %pattern_type.f6d = addr_pattern %self.param_patt [concrete]
// CHECK:STDOUT:   } {
// CHECK:STDOUT:     %self.param: %ptr.019 = value_param call_param0
// CHECK:STDOUT:     %Self.ref: type = name_ref Self, constants.%C [concrete = constants.%C]
// CHECK:STDOUT:     %self: %ptr.019 = bind_name self, %self.param
// CHECK:STDOUT:   }
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT:   .Op = %C.as.Destroy.impl.Op.decl
// CHECK:STDOUT:   witness = @C.%Destroy.impl_witness
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: class @C {
// CHECK:STDOUT:   %I.decl: type = interface_decl @I [concrete = constants.%I.type] {} {}
// CHECK:STDOUT:   impl_decl @C.as.I.impl [concrete] {} {
// CHECK:STDOUT:     %C.ref: type = name_ref C, file.%C.decl [concrete = constants.%C]
// CHECK:STDOUT:     %I.ref: type = name_ref I, @C.%I.decl [concrete = constants.%I.type]
// CHECK:STDOUT:   }
// CHECK:STDOUT:   %I.impl_witness_table = impl_witness_table (@C.as.I.impl.%C.as.I.impl.F.decl), @C.as.I.impl [concrete]
// CHECK:STDOUT:   %I.impl_witness: <witness> = impl_witness %I.impl_witness_table [concrete = constants.%I.impl_witness]
// CHECK:STDOUT:   %Self.ref: type = name_ref Self, constants.%C [concrete = constants.%C]
// CHECK:STDOUT:   impl_decl @C.as.Destroy.impl [concrete] {} {}
// CHECK:STDOUT:   %Destroy.impl_witness_table = impl_witness_table (@C.as.Destroy.impl.%C.as.Destroy.impl.Op.decl), @C.as.Destroy.impl [concrete]
// CHECK:STDOUT:   %Destroy.impl_witness: <witness> = impl_witness %Destroy.impl_witness_table [concrete = constants.%Destroy.impl_witness.edd]
// CHECK:STDOUT:   %complete_type: <witness> = complete_type_witness constants.%empty_struct_type [concrete = 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:   .C = <poisoned>
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: generic fn @I.F(@I.%Self: %I.type) {
// CHECK:STDOUT:   %Self: %I.type = bind_symbolic_name Self, 0 [symbolic = %Self (constants.%Self.6ef)]
// CHECK:STDOUT:   %Self.as_type.loc18_16.1: type = facet_access_type %Self [symbolic = %Self.as_type.loc18_16.1 (constants.%Self.as_type.390)]
// CHECK:STDOUT:   %pattern_type: type = pattern_type %Self.as_type.loc18_16.1 [symbolic = %pattern_type (constants.%pattern_type.b2f)]
// CHECK:STDOUT:
// CHECK:STDOUT: !definition:
// CHECK:STDOUT:   %require_complete: <witness> = require_complete_type %Self.as_type.loc18_16.1 [symbolic = %require_complete (constants.%require_complete.8cb)]
// CHECK:STDOUT:
// CHECK:STDOUT:   fn(%self.param: @I.F.%Self.as_type.loc18_16.1 (%Self.as_type.390)) {
// CHECK:STDOUT:   !entry:
// CHECK:STDOUT:     name_binding_decl {
// CHECK:STDOUT:       %c.patt: %pattern_type.c48 = binding_pattern c [concrete]
// CHECK:STDOUT:       %c.var_patt: %pattern_type.c48 = var_pattern %c.patt [concrete]
// CHECK:STDOUT:     }
// CHECK:STDOUT:     %c.var: ref %C = var %c.var_patt
// CHECK:STDOUT:     %.loc20_19.1: %empty_struct_type = struct_literal ()
// CHECK:STDOUT:     %.loc20_19.2: init %C = class_init (), %c.var [concrete = constants.%C.val]
// CHECK:STDOUT:     %.loc20_7: init %C = converted %.loc20_19.1, %.loc20_19.2 [concrete = constants.%C.val]
// CHECK:STDOUT:     assign %c.var, %.loc20_7
// CHECK:STDOUT:     %C.ref: type = name_ref C, file.%C.decl [concrete = 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 [concrete = constants.%I.type]
// CHECK:STDOUT:     %F.ref: %I.assoc_type = name_ref F, @I.%assoc0 [concrete = constants.%assoc0.a33]
// CHECK:STDOUT:     %impl.elem0: %.e5b = impl_witness_access constants.%I.impl_witness, element0 [concrete = constants.%C.as.I.impl.F]
// CHECK:STDOUT:     %bound_method: <bound method> = bound_method %c.ref, %impl.elem0
// CHECK:STDOUT:     %.loc21: %C = bind_value %c.ref
// CHECK:STDOUT:     %C.as.I.impl.F.call: init %empty_tuple.type = call %bound_method(%.loc21)
// CHECK:STDOUT:     %C.as.Destroy.impl.Op.bound: <bound method> = bound_method %c.var, constants.%C.as.Destroy.impl.Op
// CHECK:STDOUT:     %addr: %ptr.019 = addr_of %c.var
// CHECK:STDOUT:     %C.as.Destroy.impl.Op.call: init %empty_tuple.type = call %C.as.Destroy.impl.Op.bound(%addr)
// CHECK:STDOUT:     return
// CHECK:STDOUT:   }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @C.as.I.impl.F(%self.param: %C) {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT:   return
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @C.as.Destroy.impl.Op(%self.param: %ptr.019) = "no_op";
// CHECK:STDOUT:
// CHECK:STDOUT: specific @I.F(constants.%Self.6ef) {
// CHECK:STDOUT:   %Self => constants.%Self.6ef
// CHECK:STDOUT:   %Self.as_type.loc18_16.1 => constants.%Self.as_type.390
// CHECK:STDOUT:   %pattern_type => constants.%pattern_type.b2f
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: specific @I.F(constants.%I.facet) {
// CHECK:STDOUT:   %Self => constants.%I.facet
// CHECK:STDOUT:   %Self.as_type.loc18_16.1 => constants.%C
// CHECK:STDOUT:   %pattern_type => constants.%pattern_type.c48
// CHECK:STDOUT: }
// CHECK:STDOUT: