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carbon-lang/toolchain/check/testdata/class/init_adapt.carbon
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Richard Smith 23f9065949 Implement proposal #3927. (#3963) 
Change syntax for package declaration to put the `impl` keyword at the
start and remove the `api` keyword.

To support this, rearrange processing of package, library, and import
declarations to use the general modifier handling support in declaration
parsing rather than special-case logic.

There is an ambiguity in `impl package.Foo as Bar`, which we resolve by
treating `package` as an introducer after a modifier only if it's not
followed by `.`.
2024-05-21 00:36:03 +00:00

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// 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
// --- init_adapt.carbon
library "init_adapt";
class C {
var a: i32;
var b: i32;
}
class AdaptC {
adapt C;
}
let a: C = {.a = 1, .b = 2};
let b: AdaptC = a as AdaptC;
let c: C = b as C;
fn MakeC() -> C;
fn MakeAdaptC() -> AdaptC;
var d: AdaptC = MakeC() as AdaptC;
var e: C = MakeAdaptC() as C;
// --- fail_not_implicit.carbon
library "fail_not_implicit";
class C {
var a: i32;
var b: i32;
}
class AdaptC {
adapt C;
}
let a: C = {.a = 1, .b = 2};
// Cannot implicitly convert between a type and an adapter for the type.
// CHECK:STDERR: fail_not_implicit.carbon:[[@LINE+4]]:1: ERROR: Cannot implicitly convert from `C` to `AdaptC`.
// CHECK:STDERR: let b: AdaptC = a;
// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~
// CHECK:STDERR:
let b: AdaptC = a;
// CHECK:STDERR: fail_not_implicit.carbon:[[@LINE+4]]:1: ERROR: Cannot implicitly convert from `AdaptC` to `C`.
// CHECK:STDERR: let c: C = b;
// CHECK:STDERR: ^~~~~~~~~~~~~
// CHECK:STDERR:
let c: C = b;
fn MakeC() -> C;
fn MakeAdaptC() -> AdaptC;
// CHECK:STDERR: fail_not_implicit.carbon:[[@LINE+4]]:1: ERROR: Cannot implicitly convert from `C` to `AdaptC`.
// CHECK:STDERR: var d: AdaptC = MakeC();
// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~~~~~
// CHECK:STDERR:
var d: AdaptC = MakeC();
// CHECK:STDERR: fail_not_implicit.carbon:[[@LINE+3]]:1: ERROR: Cannot implicitly convert from `AdaptC` to `C`.
// CHECK:STDERR: var e: C = MakeAdaptC();
// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~~~~~
var e: C = MakeAdaptC();
// CHECK:STDOUT: --- init_adapt.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: %C: type = class_type @C [template]
// CHECK:STDOUT: %.1: type = unbound_element_type C, i32 [template]
// CHECK:STDOUT: %.2: type = struct_type {.a: i32, .b: i32} [template]
// CHECK:STDOUT: %AdaptC: type = class_type @AdaptC [template]
// CHECK:STDOUT: %.3: type = ptr_type {.a: i32, .b: i32} [template]
// CHECK:STDOUT: %.4: i32 = int_literal 1 [template]
// CHECK:STDOUT: %.5: i32 = int_literal 2 [template]
// CHECK:STDOUT: %struct.1: C = struct_value (%.4, %.5) [template]
// CHECK:STDOUT: %MakeC: type = fn_type @MakeC [template]
// CHECK:STDOUT: %.6: type = tuple_type () [template]
// CHECK:STDOUT: %struct.2: MakeC = struct_value () [template]
// CHECK:STDOUT: %MakeAdaptC: type = fn_type @MakeAdaptC [template]
// CHECK:STDOUT: %struct.3: MakeAdaptC = struct_value () [template]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT: package: <namespace> = namespace [template] {
// CHECK:STDOUT: .Core = %Core
// CHECK:STDOUT: .C = %C.decl
// CHECK:STDOUT: .AdaptC = %AdaptC.decl
// CHECK:STDOUT: .MakeC = %MakeC.decl
// CHECK:STDOUT: .MakeAdaptC = %MakeAdaptC.decl
// CHECK:STDOUT: .d = %d
// CHECK:STDOUT: .e = %e
// CHECK:STDOUT: }
// CHECK:STDOUT: %Core: <namespace> = namespace [template] {}
// CHECK:STDOUT: %C.decl: type = class_decl @C [template = constants.%C] {}
// CHECK:STDOUT: %AdaptC.decl: type = class_decl @AdaptC [template = constants.%AdaptC] {}
// CHECK:STDOUT: %C.ref.loc13: type = name_ref C, %C.decl [template = constants.%C]
// CHECK:STDOUT: %.loc13_18: i32 = int_literal 1 [template = constants.%.4]
// CHECK:STDOUT: %.loc13_26: i32 = int_literal 2 [template = constants.%.5]
// CHECK:STDOUT: %.loc13_27.1: {.a: i32, .b: i32} = struct_literal (%.loc13_18, %.loc13_26)
// CHECK:STDOUT: %.loc13_27.2: ref C = temporary_storage
// CHECK:STDOUT: %.loc13_27.3: ref i32 = class_element_access %.loc13_27.2, element0
// CHECK:STDOUT: %.loc13_27.4: init i32 = initialize_from %.loc13_18 to %.loc13_27.3 [template = constants.%.4]
// CHECK:STDOUT: %.loc13_27.5: ref i32 = class_element_access %.loc13_27.2, element1
// CHECK:STDOUT: %.loc13_27.6: init i32 = initialize_from %.loc13_26 to %.loc13_27.5 [template = constants.%.5]
// CHECK:STDOUT: %.loc13_27.7: init C = class_init (%.loc13_27.4, %.loc13_27.6), %.loc13_27.2 [template = constants.%struct.1]
// CHECK:STDOUT: %.loc13_27.8: ref C = temporary %.loc13_27.2, %.loc13_27.7
// CHECK:STDOUT: %.loc13_28.1: ref C = converted %.loc13_27.1, %.loc13_27.8
// CHECK:STDOUT: %.loc13_28.2: C = bind_value %.loc13_28.1
// CHECK:STDOUT: %a: C = bind_name a, %.loc13_28.2
// CHECK:STDOUT: %AdaptC.ref.loc15_8: type = name_ref AdaptC, %AdaptC.decl [template = constants.%AdaptC]
// CHECK:STDOUT: %a.ref: C = name_ref a, %a
// CHECK:STDOUT: %AdaptC.ref.loc15_22: type = name_ref AdaptC, %AdaptC.decl [template = constants.%AdaptC]
// CHECK:STDOUT: %.loc15_19.1: AdaptC = as_compatible %a.ref
// CHECK:STDOUT: %.loc15_19.2: AdaptC = converted %a.ref, %.loc15_19.1
// CHECK:STDOUT: %b: AdaptC = bind_name b, %.loc15_19.2
// CHECK:STDOUT: %C.ref.loc17_8: type = name_ref C, %C.decl [template = constants.%C]
// CHECK:STDOUT: %b.ref: AdaptC = name_ref b, %b
// CHECK:STDOUT: %C.ref.loc17_17: type = name_ref C, %C.decl [template = constants.%C]
// CHECK:STDOUT: %.loc17_14.1: C = as_compatible %b.ref
// CHECK:STDOUT: %.loc17_14.2: C = converted %b.ref, %.loc17_14.1
// CHECK:STDOUT: %c: C = bind_name c, %.loc17_14.2
// CHECK:STDOUT: %MakeC.decl: MakeC = fn_decl @MakeC [template = constants.%struct.2] {
// CHECK:STDOUT: %C.ref.loc19: type = name_ref C, %C.decl [template = constants.%C]
// CHECK:STDOUT: @MakeC.%return: ref C = var <return slot>
// CHECK:STDOUT: }
// CHECK:STDOUT: %MakeAdaptC.decl: MakeAdaptC = fn_decl @MakeAdaptC [template = constants.%struct.3] {
// CHECK:STDOUT: %AdaptC.ref.loc21: type = name_ref AdaptC, %AdaptC.decl [template = constants.%AdaptC]
// CHECK:STDOUT: @MakeAdaptC.%return: ref AdaptC = var <return slot>
// CHECK:STDOUT: }
// CHECK:STDOUT: %AdaptC.ref.loc23: type = name_ref AdaptC, %AdaptC.decl [template = constants.%AdaptC]
// CHECK:STDOUT: %d.var: ref AdaptC = var d
// CHECK:STDOUT: %d: ref AdaptC = bind_name d, %d.var
// CHECK:STDOUT: %C.ref.loc25: type = name_ref C, %C.decl [template = constants.%C]
// CHECK:STDOUT: %e.var: ref C = var e
// CHECK:STDOUT: %e: ref C = bind_name e, %e.var
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: class @C {
// CHECK:STDOUT: %.loc5: <unbound element of class C> = field_decl a, element0 [template]
// CHECK:STDOUT: %.loc6: <unbound element of class C> = field_decl b, element1 [template]
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT: .Self = constants.%C
// CHECK:STDOUT: .a = %.loc5
// CHECK:STDOUT: .b = %.loc6
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: class @AdaptC {
// CHECK:STDOUT: %C.ref: type = name_ref C, file.%C.decl [template = constants.%C]
// CHECK:STDOUT: adapt_decl C
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT: .Self = constants.%AdaptC
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @MakeC() -> C;
// CHECK:STDOUT:
// CHECK:STDOUT: fn @MakeAdaptC() -> AdaptC;
// CHECK:STDOUT:
// CHECK:STDOUT: fn @__global_init() {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: %MakeC.ref: MakeC = name_ref MakeC, file.%MakeC.decl [template = constants.%struct.2]
// CHECK:STDOUT: %.loc23_5: ref AdaptC = splice_block file.%d.var {}
// CHECK:STDOUT: %MakeC.call: init C = call %MakeC.ref() to %.loc23_5
// CHECK:STDOUT: %AdaptC.ref: type = name_ref AdaptC, file.%AdaptC.decl [template = constants.%AdaptC]
// CHECK:STDOUT: %.loc23_25.1: init AdaptC = as_compatible %MakeC.call
// CHECK:STDOUT: %.loc23_25.2: init AdaptC = converted %MakeC.call, %.loc23_25.1
// CHECK:STDOUT: assign file.%d.var, %.loc23_25.2
// CHECK:STDOUT: %MakeAdaptC.ref: MakeAdaptC = name_ref MakeAdaptC, file.%MakeAdaptC.decl [template = constants.%struct.3]
// CHECK:STDOUT: %.loc25_5: ref C = splice_block file.%e.var {}
// CHECK:STDOUT: %MakeAdaptC.call: init AdaptC = call %MakeAdaptC.ref() to %.loc25_5
// CHECK:STDOUT: %C.ref: type = name_ref C, file.%C.decl [template = constants.%C]
// CHECK:STDOUT: %.loc25_25.1: init C = as_compatible %MakeAdaptC.call
// CHECK:STDOUT: %.loc25_25.2: init C = converted %MakeAdaptC.call, %.loc25_25.1
// CHECK:STDOUT: assign file.%e.var, %.loc25_25.2
// CHECK:STDOUT: return
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: --- fail_not_implicit.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: %C: type = class_type @C [template]
// CHECK:STDOUT: %.1: type = unbound_element_type C, i32 [template]
// CHECK:STDOUT: %.2: type = struct_type {.a: i32, .b: i32} [template]
// CHECK:STDOUT: %AdaptC: type = class_type @AdaptC [template]
// CHECK:STDOUT: %.3: type = ptr_type {.a: i32, .b: i32} [template]
// CHECK:STDOUT: %.4: i32 = int_literal 1 [template]
// CHECK:STDOUT: %.5: i32 = int_literal 2 [template]
// CHECK:STDOUT: %struct.1: C = struct_value (%.4, %.5) [template]
// CHECK:STDOUT: %MakeC: type = fn_type @MakeC [template]
// CHECK:STDOUT: %.6: type = tuple_type () [template]
// CHECK:STDOUT: %struct.2: MakeC = struct_value () [template]
// CHECK:STDOUT: %MakeAdaptC: type = fn_type @MakeAdaptC [template]
// CHECK:STDOUT: %struct.3: MakeAdaptC = struct_value () [template]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT: package: <namespace> = namespace [template] {
// CHECK:STDOUT: .Core = %Core
// CHECK:STDOUT: .C = %C.decl
// CHECK:STDOUT: .AdaptC = %AdaptC.decl
// CHECK:STDOUT: .MakeC = %MakeC.decl
// CHECK:STDOUT: .MakeAdaptC = %MakeAdaptC.decl
// CHECK:STDOUT: .d = %d
// CHECK:STDOUT: .e = %e
// CHECK:STDOUT: }
// CHECK:STDOUT: %Core: <namespace> = namespace [template] {}
// CHECK:STDOUT: %C.decl: type = class_decl @C [template = constants.%C] {}
// CHECK:STDOUT: %AdaptC.decl: type = class_decl @AdaptC [template = constants.%AdaptC] {}
// CHECK:STDOUT: %C.ref.loc13: type = name_ref C, %C.decl [template = constants.%C]
// CHECK:STDOUT: %.loc13_18: i32 = int_literal 1 [template = constants.%.4]
// CHECK:STDOUT: %.loc13_26: i32 = int_literal 2 [template = constants.%.5]
// CHECK:STDOUT: %.loc13_27.1: {.a: i32, .b: i32} = struct_literal (%.loc13_18, %.loc13_26)
// CHECK:STDOUT: %.loc13_27.2: ref C = temporary_storage
// CHECK:STDOUT: %.loc13_27.3: ref i32 = class_element_access %.loc13_27.2, element0
// CHECK:STDOUT: %.loc13_27.4: init i32 = initialize_from %.loc13_18 to %.loc13_27.3 [template = constants.%.4]
// CHECK:STDOUT: %.loc13_27.5: ref i32 = class_element_access %.loc13_27.2, element1
// CHECK:STDOUT: %.loc13_27.6: init i32 = initialize_from %.loc13_26 to %.loc13_27.5 [template = constants.%.5]
// CHECK:STDOUT: %.loc13_27.7: init C = class_init (%.loc13_27.4, %.loc13_27.6), %.loc13_27.2 [template = constants.%struct.1]
// CHECK:STDOUT: %.loc13_27.8: ref C = temporary %.loc13_27.2, %.loc13_27.7
// CHECK:STDOUT: %.loc13_28.1: ref C = converted %.loc13_27.1, %.loc13_27.8
// CHECK:STDOUT: %.loc13_28.2: C = bind_value %.loc13_28.1
// CHECK:STDOUT: %a: C = bind_name a, %.loc13_28.2
// CHECK:STDOUT: %AdaptC.ref.loc21: type = name_ref AdaptC, %AdaptC.decl [template = constants.%AdaptC]
// CHECK:STDOUT: %a.ref: C = name_ref a, %a
// CHECK:STDOUT: %b: AdaptC = bind_name b, <error>
// CHECK:STDOUT: %C.ref.loc27: type = name_ref C, %C.decl [template = constants.%C]
// CHECK:STDOUT: %b.ref: AdaptC = name_ref b, %b
// CHECK:STDOUT: %c: C = bind_name c, <error>
// CHECK:STDOUT: %MakeC.decl: MakeC = fn_decl @MakeC [template = constants.%struct.2] {
// CHECK:STDOUT: %C.ref.loc29: type = name_ref C, %C.decl [template = constants.%C]
// CHECK:STDOUT: @MakeC.%return: ref C = var <return slot>
// CHECK:STDOUT: }
// CHECK:STDOUT: %MakeAdaptC.decl: MakeAdaptC = fn_decl @MakeAdaptC [template = constants.%struct.3] {
// CHECK:STDOUT: %AdaptC.ref.loc31: type = name_ref AdaptC, %AdaptC.decl [template = constants.%AdaptC]
// CHECK:STDOUT: @MakeAdaptC.%return: ref AdaptC = var <return slot>
// CHECK:STDOUT: }
// CHECK:STDOUT: %AdaptC.ref.loc37: type = name_ref AdaptC, %AdaptC.decl [template = constants.%AdaptC]
// CHECK:STDOUT: %d.var: ref AdaptC = var d
// CHECK:STDOUT: %d: ref AdaptC = bind_name d, %d.var
// CHECK:STDOUT: %C.ref.loc42: type = name_ref C, %C.decl [template = constants.%C]
// CHECK:STDOUT: %e.var: ref C = var e
// CHECK:STDOUT: %e: ref C = bind_name e, %e.var
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: class @C {
// CHECK:STDOUT: %.loc5: <unbound element of class C> = field_decl a, element0 [template]
// CHECK:STDOUT: %.loc6: <unbound element of class C> = field_decl b, element1 [template]
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT: .Self = constants.%C
// CHECK:STDOUT: .a = %.loc5
// CHECK:STDOUT: .b = %.loc6
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: class @AdaptC {
// CHECK:STDOUT: %C.ref: type = name_ref C, file.%C.decl [template = constants.%C]
// CHECK:STDOUT: adapt_decl C
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT: .Self = constants.%AdaptC
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @MakeC() -> C;
// CHECK:STDOUT:
// CHECK:STDOUT: fn @MakeAdaptC() -> AdaptC;
// CHECK:STDOUT:
// CHECK:STDOUT: fn @__global_init() {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: %MakeC.ref: MakeC = name_ref MakeC, file.%MakeC.decl [template = constants.%struct.2]
// CHECK:STDOUT: %.loc37: ref C = temporary_storage
// CHECK:STDOUT: %MakeC.call: init C = call %MakeC.ref() to %.loc37
// CHECK:STDOUT: assign file.%d.var, <error>
// CHECK:STDOUT: %MakeAdaptC.ref: MakeAdaptC = name_ref MakeAdaptC, file.%MakeAdaptC.decl [template = constants.%struct.3]
// CHECK:STDOUT: %.loc42: ref AdaptC = temporary_storage
// CHECK:STDOUT: %MakeAdaptC.call: init AdaptC = call %MakeAdaptC.ref() to %.loc42
// CHECK:STDOUT: assign file.%e.var, <error>
// CHECK:STDOUT: return
// CHECK:STDOUT: }
// CHECK:STDOUT:
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