mirror of
https://github.com/carbon-language/carbon-lang.git
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Richard SmithandJon Ross-Perkins
33c1e9ca95
When declaring an associated entity in an interface -- just associated functions for now -- create an associated entity value and corresponding type to represent a "slot in a witness table". Also track the list of associated entities on the interface so that we will eventually be able to check impls against them. Associated entities are represented as the integer index of their slot in a witness table. --------- Co-authored-by: Jon Ross-Perkins <jperkins@google.com>
131 lines
5.3 KiB
Plaintext
131 lines
5.3 KiB
Plaintext
// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
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// Exceptions. See /LICENSE for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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// AUTOUPDATE
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// --- a.carbon
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library "a" api;
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interface Empty {
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}
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interface ForwardDeclared;
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interface ForwardDeclared {
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fn F();
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}
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var f_ref: {.f: ForwardDeclared};
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// --- b.carbon
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library "b" api;
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import library "a";
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fn UseEmpty(e: Empty) {}
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fn UseForwardDeclared(f: ForwardDeclared) {}
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var f: ForwardDeclared* = &f_ref.f;
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// CHECK:STDOUT: --- a.carbon
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// CHECK:STDOUT:
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// CHECK:STDOUT: constants {
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// CHECK:STDOUT: %.1: type = interface_type @Empty [template]
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// CHECK:STDOUT: %.2: type = interface_type @ForwardDeclared [template]
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// CHECK:STDOUT: %.3: type = assoc_entity_type @ForwardDeclared, <function> [template]
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// CHECK:STDOUT: %.4: <associated <function> in ForwardDeclared> = assoc_entity element0, @ForwardDeclared.%F [template]
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// CHECK:STDOUT: %.5: type = struct_type {.f: ForwardDeclared} [template]
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// CHECK:STDOUT: %.6: type = tuple_type () [template]
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// CHECK:STDOUT: %.7: type = struct_type {.f: ()} [template]
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: file {
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// CHECK:STDOUT: package: <namespace> = namespace {.Empty = %Empty.decl, .ForwardDeclared = %ForwardDeclared.decl.loc7, .f_ref = %f_ref} [template]
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// CHECK:STDOUT: %Empty.decl = interface_decl @Empty, () [template = constants.%.1]
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// CHECK:STDOUT: %ForwardDeclared.decl.loc7 = interface_decl @ForwardDeclared, () [template = constants.%.2]
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// CHECK:STDOUT: %ForwardDeclared.decl.loc9 = interface_decl @ForwardDeclared, () [template = constants.%.2]
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// CHECK:STDOUT: %ForwardDeclared.ref: type = name_ref ForwardDeclared, %ForwardDeclared.decl.loc7 [template = constants.%.2]
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// CHECK:STDOUT: %.loc13: type = struct_type {.f: ForwardDeclared} [template = constants.%.5]
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// CHECK:STDOUT: %f_ref.var: ref {.f: ForwardDeclared} = var f_ref
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// CHECK:STDOUT: %f_ref: ref {.f: ForwardDeclared} = bind_name f_ref, %f_ref.var
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: interface @Empty {
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// CHECK:STDOUT:
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// CHECK:STDOUT: !members:
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// CHECK:STDOUT: witness = ()
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: interface @ForwardDeclared {
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// CHECK:STDOUT: %F: <function> = fn_decl @F [template]
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// CHECK:STDOUT: %.loc10: <associated <function> in ForwardDeclared> = assoc_entity element0, %F [template = constants.%.4]
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// CHECK:STDOUT:
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// CHECK:STDOUT: !members:
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// CHECK:STDOUT: .F = %.loc10
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// CHECK:STDOUT: witness = (%F)
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: fn @F();
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// CHECK:STDOUT:
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// CHECK:STDOUT: --- b.carbon
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// CHECK:STDOUT:
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// CHECK:STDOUT: constants {
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// CHECK:STDOUT: %.1: type = interface_type @Empty [template]
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// CHECK:STDOUT: %.2: type = tuple_type () [template]
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// CHECK:STDOUT: %.3: type = interface_type @ForwardDeclared [template]
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// CHECK:STDOUT: %.4: type = ptr_type ForwardDeclared [template]
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// CHECK:STDOUT: %.5: type = struct_type {.f: ForwardDeclared} [template]
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// CHECK:STDOUT: %.6: type = struct_type {.f: ()} [template]
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: file {
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// CHECK:STDOUT: package: <namespace> = namespace {.Empty = %import_ref.1, .ForwardDeclared = %import_ref.2, .f_ref = %import_ref.3, .UseEmpty = %UseEmpty, .UseForwardDeclared = %UseForwardDeclared, .f = %f} [template]
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// CHECK:STDOUT: %import_ref.1: type = import_ref ir1, inst+1, used [template = constants.%.1]
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// CHECK:STDOUT: %import_ref.2: type = import_ref ir1, inst+3, used [template = constants.%.3]
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// CHECK:STDOUT: %import_ref.3: ref {.f: ForwardDeclared} = import_ref ir1, inst+19, used
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// CHECK:STDOUT: %UseEmpty: <function> = fn_decl @UseEmpty [template]
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// CHECK:STDOUT: %UseForwardDeclared: <function> = fn_decl @UseForwardDeclared [template]
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// CHECK:STDOUT: %ForwardDeclared.ref: type = name_ref ForwardDeclared, %import_ref.2 [template = constants.%.3]
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// CHECK:STDOUT: %.loc9: type = ptr_type ForwardDeclared [template = constants.%.4]
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// CHECK:STDOUT: %f.var: ref ForwardDeclared* = var f
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// CHECK:STDOUT: %f: ref ForwardDeclared* = bind_name f, %f.var
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: interface @Empty {
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// CHECK:STDOUT:
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// CHECK:STDOUT: !members:
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// CHECK:STDOUT: witness = ()
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: interface @ForwardDeclared {
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// CHECK:STDOUT: %import_ref.1 = import_ref ir1, inst+8, unused
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// CHECK:STDOUT: %import_ref.2 = import_ref ir1, inst+6, unused
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// CHECK:STDOUT:
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// CHECK:STDOUT: !members:
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// CHECK:STDOUT: .F = %import_ref.1
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// CHECK:STDOUT: witness = (%import_ref.2)
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: fn @UseEmpty(%e: Empty) {
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// CHECK:STDOUT: !entry:
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// CHECK:STDOUT: return
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: fn @UseForwardDeclared(%f: ForwardDeclared) {
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// CHECK:STDOUT: !entry:
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// CHECK:STDOUT: return
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: fn @__global_init() {
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// CHECK:STDOUT: !entry:
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// CHECK:STDOUT: %f_ref.ref: ref {.f: ForwardDeclared} = name_ref f_ref, file.%import_ref.3
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// CHECK:STDOUT: %.loc9_33: ref ForwardDeclared = struct_access %f_ref.ref, element0
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// CHECK:STDOUT: %.loc9_27: ForwardDeclared* = addr_of %.loc9_33
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// CHECK:STDOUT: assign file.%f.var, %.loc9_27
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// CHECK:STDOUT: return
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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