mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-09-30 16:25:01 +01:00
Jon Ross-Perkins
91f0c23124
Building on #3636 which handles the general import case, add special casing for namespaces. Namespaces can be combined cross-IR, so it's a little more complex. The implementation adds import_id to the Namespace instruction as a reference to find the original using the normal structure. This is achieved by moving the name_id to NameScope to free up space. --- I considered a few alternatives... I considered adding import_id to NameScope, but: 1. It's more consistent with things such as Function or Class that provide name_id on the info object rather than the instruction. 2. I thought it more likely that there would be more NameScope cases that might want a name_id rather than the import_id, since ImportRef will typically be used. I considered putting the import source (cross-ref IR id + inst id) on the NameScope versus a separate ImportRef, which seems like the strongest argument towards the NameScope approach because it removes an instruction. That just felt inconsistent though, and the overhead of instruction-per-imported-namespace should be low (theoretically few namespaces should be used). Plus I feel a bit odd adding two generally-unused ids to NameScope. A specialized Namespace structure could also have been created to store the import_id, but that would add an indirection to the NameScope.
82 lines
3.7 KiB
Plaintext
82 lines
3.7 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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class Inner {
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var a: i32;
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var b: i32;
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}
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fn MakeInner() -> Inner;
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class Outer {
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var c: Inner;
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var d: Inner;
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}
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fn MakeOuter() -> Outer {
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return {.c = MakeInner(), .d = MakeInner()};
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}
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// CHECK:STDOUT: --- init_nested.carbon
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// CHECK:STDOUT:
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// CHECK:STDOUT: constants {
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// CHECK:STDOUT: %Inner: type = class_type @Inner [template]
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// CHECK:STDOUT: %.1: type = unbound_element_type Inner, i32 [template]
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// CHECK:STDOUT: %.2: type = struct_type {.a: i32, .b: i32} [template]
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// CHECK:STDOUT: %.3: type = ptr_type {.a: i32, .b: i32} [template]
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// CHECK:STDOUT: %Outer: type = class_type @Outer [template]
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// CHECK:STDOUT: %.4: type = unbound_element_type Outer, Inner [template]
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// CHECK:STDOUT: %.5: type = struct_type {.c: Inner, .d: Inner} [template]
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// CHECK:STDOUT: %.6: type = struct_type {.c: {.a: i32, .b: i32}*, .d: {.a: i32, .b: i32}*} [template]
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// CHECK:STDOUT: %.7: type = ptr_type {.c: {.a: i32, .b: i32}*, .d: {.a: i32, .b: i32}*} [template]
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// CHECK:STDOUT: %.8: type = ptr_type {.c: Inner, .d: Inner} [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 {.Inner = %Inner.decl, .MakeInner = %MakeInner, .Outer = %Outer.decl, .MakeOuter = %MakeOuter} [template]
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// CHECK:STDOUT: %Inner.decl = class_decl @Inner, ()
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// CHECK:STDOUT: %MakeInner: <function> = fn_decl @MakeInner [template]
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// CHECK:STDOUT: %Outer.decl = class_decl @Outer, ()
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// CHECK:STDOUT: %MakeOuter: <function> = fn_decl @MakeOuter [template]
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: class @Inner {
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// CHECK:STDOUT: %.loc8: <unbound element of class Inner> = field_decl a, element0 [template]
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// CHECK:STDOUT: %.loc9: <unbound element of class Inner> = field_decl b, element1 [template]
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// CHECK:STDOUT:
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// CHECK:STDOUT: !members:
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// CHECK:STDOUT: .a = %.loc8
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// CHECK:STDOUT: .b = %.loc9
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: class @Outer {
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// CHECK:STDOUT: %Inner.ref.loc15: type = name_ref Inner, constants.%Inner [template = constants.%Inner]
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// CHECK:STDOUT: %.loc15: <unbound element of class Outer> = field_decl c, element0 [template]
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// CHECK:STDOUT: %Inner.ref.loc16: type = name_ref Inner, constants.%Inner [template = constants.%Inner]
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// CHECK:STDOUT: %.loc16: <unbound element of class Outer> = field_decl d, element1 [template]
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// CHECK:STDOUT:
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// CHECK:STDOUT: !members:
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// CHECK:STDOUT: .c = %.loc15
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// CHECK:STDOUT: .d = %.loc16
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: fn @MakeInner() -> %return: Inner;
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// CHECK:STDOUT:
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// CHECK:STDOUT: fn @MakeOuter() -> %return: Outer {
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// CHECK:STDOUT: !entry:
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// CHECK:STDOUT: %MakeInner.ref.loc20_16: <function> = name_ref MakeInner, file.%MakeInner [template = file.%MakeInner]
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// CHECK:STDOUT: %.loc20_45.1: ref Inner = class_element_access %return, element0
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// CHECK:STDOUT: %.loc20_25: init Inner = call %MakeInner.ref.loc20_16() to %.loc20_45.1
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// CHECK:STDOUT: %MakeInner.ref.loc20_34: <function> = name_ref MakeInner, file.%MakeInner [template = file.%MakeInner]
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// CHECK:STDOUT: %.loc20_45.2: ref Inner = class_element_access %return, element1
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// CHECK:STDOUT: %.loc20_43: init Inner = call %MakeInner.ref.loc20_34() to %.loc20_45.2
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// CHECK:STDOUT: %.loc20_45.3: {.c: Inner, .d: Inner} = struct_literal (%.loc20_25, %.loc20_43)
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// CHECK:STDOUT: %.loc20_45.4: init Outer = class_init (%.loc20_25, %.loc20_43), %return
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// CHECK:STDOUT: %.loc20_45.5: init Outer = converted %.loc20_45.3, %.loc20_45.4
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// CHECK:STDOUT: return %.loc20_45.5
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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