mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-09-30 11:05:07 +01:00
Richard SmithandJon Ross-Perkins
1d720dc001
When a member access names an interface member, perform impl lookup to find the impl and its corresponding member. --------- Co-authored-by: Jon Ross-Perkins <jperkins@google.com>
99 lines
3.5 KiB
Plaintext
99 lines
3.5 KiB
Plaintext
// 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 I {
|
|
fn F();
|
|
}
|
|
|
|
class C {
|
|
extend impl as I;
|
|
}
|
|
|
|
fn F() -> i32 {
|
|
// TODO: This should produce a more useful error message.
|
|
// CHECK:STDERR: fail_todo_undefined_impl.carbon:[[@LINE+3]]:10: ERROR: Cannot access member of interface I in type C that does not implement that interface.
|
|
// CHECK:STDERR: return C.F();
|
|
// CHECK:STDERR: ^~~
|
|
return C.F();
|
|
}
|
|
|
|
impl C as I {
|
|
fn F() {}
|
|
}
|
|
|
|
// CHECK:STDOUT: --- fail_todo_undefined_impl.carbon
|
|
// CHECK:STDOUT:
|
|
// CHECK:STDOUT: constants {
|
|
// CHECK:STDOUT: %.1: type = interface_type @I [template]
|
|
// CHECK:STDOUT: %.2: type = assoc_entity_type @I, <function> [template]
|
|
// CHECK:STDOUT: %.3: <associated <function> in I> = assoc_entity element0, @I.%F [template]
|
|
// CHECK:STDOUT: %C: type = class_type @C [template]
|
|
// CHECK:STDOUT: %.4: type = struct_type {} [template]
|
|
// CHECK:STDOUT: %.5: <witness> = interface_witness (@impl.%F) [template]
|
|
// CHECK:STDOUT: }
|
|
// CHECK:STDOUT:
|
|
// CHECK:STDOUT: file {
|
|
// CHECK:STDOUT: package: <namespace> = namespace [template] {
|
|
// CHECK:STDOUT: .I = %I.decl
|
|
// CHECK:STDOUT: .C = %C.decl
|
|
// CHECK:STDOUT: .F = %F
|
|
// CHECK:STDOUT: }
|
|
// CHECK:STDOUT: %I.decl: type = interface_decl @I [template = constants.%.1] {}
|
|
// CHECK:STDOUT: %C.decl: type = class_decl @C [template = constants.%C] {}
|
|
// CHECK:STDOUT: %F: <function> = fn_decl @F.2 [template] {
|
|
// CHECK:STDOUT: %return.var: ref i32 = var <return slot>
|
|
// CHECK:STDOUT: }
|
|
// CHECK:STDOUT: impl_decl @impl {
|
|
// CHECK:STDOUT: %C.ref: type = name_ref C, %C.decl [template = constants.%C]
|
|
// CHECK:STDOUT: %I.ref: type = name_ref I, %I.decl [template = constants.%.1]
|
|
// CHECK:STDOUT: }
|
|
// CHECK:STDOUT: }
|
|
// CHECK:STDOUT:
|
|
// CHECK:STDOUT: interface @I {
|
|
// CHECK:STDOUT: %Self: I = bind_symbolic_name Self [symbolic]
|
|
// CHECK:STDOUT: %F: <function> = fn_decl @F.1 [template] {}
|
|
// CHECK:STDOUT: %.loc8: <associated <function> in I> = assoc_entity element0, %F [template = constants.%.3]
|
|
// CHECK:STDOUT:
|
|
// CHECK:STDOUT: !members:
|
|
// CHECK:STDOUT: .Self = %Self
|
|
// CHECK:STDOUT: .F = %.loc8
|
|
// CHECK:STDOUT: witness = (%F)
|
|
// CHECK:STDOUT: }
|
|
// CHECK:STDOUT:
|
|
// CHECK:STDOUT: impl @impl: C as I {
|
|
// CHECK:STDOUT: %F: <function> = fn_decl @F.3 [template] {}
|
|
// CHECK:STDOUT: %.1: <witness> = interface_witness (%F) [template = constants.%.5]
|
|
// CHECK:STDOUT:
|
|
// CHECK:STDOUT: !members:
|
|
// CHECK:STDOUT: .F = %F
|
|
// CHECK:STDOUT: witness = %.1
|
|
// CHECK:STDOUT: }
|
|
// CHECK:STDOUT:
|
|
// CHECK:STDOUT: class @C {
|
|
// CHECK:STDOUT: impl_decl @impl {
|
|
// CHECK:STDOUT: %I.ref: type = name_ref I, file.%I.decl [template = constants.%.1]
|
|
// CHECK:STDOUT: }
|
|
// CHECK:STDOUT:
|
|
// CHECK:STDOUT: !members:
|
|
// CHECK:STDOUT: .Self = constants.%C
|
|
// CHECK:STDOUT: extend name_scope1
|
|
// CHECK:STDOUT: }
|
|
// CHECK:STDOUT:
|
|
// CHECK:STDOUT: fn @F.1();
|
|
// CHECK:STDOUT:
|
|
// CHECK:STDOUT: fn @F.2() -> i32 {
|
|
// CHECK:STDOUT: !entry:
|
|
// CHECK:STDOUT: %C.ref: type = name_ref C, file.%C.decl [template = constants.%C]
|
|
// CHECK:STDOUT: %F.ref: <associated <function> in I> = name_ref F, @I.%.loc8 [template = constants.%.3]
|
|
// CHECK:STDOUT: return <error>
|
|
// CHECK:STDOUT: }
|
|
// CHECK:STDOUT:
|
|
// CHECK:STDOUT: fn @F.3() {
|
|
// CHECK:STDOUT: !entry:
|
|
// CHECK:STDOUT: return
|
|
// CHECK:STDOUT: }
|
|
// CHECK:STDOUT:
|