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carbon-lang/toolchain/check/testdata/class/fail_base_modifiers.carbon
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Geoff RomerandJon Ross-Perkins dc32aa2690 Initial support for binding patterns in SemIR (#4221) 
Introduces the `BindingPattern` and `SymbolicBindingPattern` insts, and
a separate stack of pattern blocks that they are emitted into. The
intent is to generate the corresponding pattern-matching insts (like
`BindName`) from them in a separate pass, but that is deferred to future
PRs.

See
[here](https://docs.google.com/document/d/1U_vQH17V893J9aF1LJXUnFYBNSs2MjKl4bJPaWCB2zo/edit?usp=sharing&resourcekey=0-w0xGYZ0An31Kpz-wvzSXwQ)
for the design this is based on, but note that during review we have
chosen to deviate from that design by putting the patterns in separate
blocks, and omitting the "forward references" from a `BindingPattern` to
its corresponding `BindName`. This in turn necessitates having separate
inst kinds for symbolic and non-symbolic binding patterns.

---------

Co-authored-by: Jon Ross-Perkins <jperkins@google.com>
2024-09-25 19:12:58 +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
// TIP: To test this file alone, run:
// TIP: bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/check/testdata/class/fail_base_modifiers.carbon
// TIP: To dump output, run:
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/class/fail_base_modifiers.carbon
base class B {}
class C1 {
// CHECK:STDERR: fail_base_modifiers.carbon:[[@LINE+4]]:3: error: `private` not allowed on `base` declaration
// CHECK:STDERR: private extend base: B;
// CHECK:STDERR: ^~~~~~~
// CHECK:STDERR:
private extend base: B;
}
class C2 {
// CHECK:STDERR: fail_base_modifiers.carbon:[[@LINE+8]]:3: error: `abstract` not allowed on `base` declaration
// CHECK:STDERR: abstract base: B;
// CHECK:STDERR: ^~~~~~~~
// CHECK:STDERR:
// CHECK:STDERR: fail_base_modifiers.carbon:[[@LINE+4]]:3: error: missing `extend` before `base` declaration
// CHECK:STDERR: abstract base: B;
// CHECK:STDERR: ^~~~~~~~~~~~~~~~~
// CHECK:STDERR:
abstract base: B;
}
class C3 {
// CHECK:STDERR: fail_base_modifiers.carbon:[[@LINE+7]]:10: error: `default` not allowed on declaration with `extend`
// CHECK:STDERR: extend default base: B;
// CHECK:STDERR: ^~~~~~~
// CHECK:STDERR: fail_base_modifiers.carbon:[[@LINE+4]]:3: note: `extend` previously appeared here
// CHECK:STDERR: extend default base: B;
// CHECK:STDERR: ^~~~~~
// CHECK:STDERR:
extend default base: B;
}
class C4 {
// CHECK:STDERR: fail_base_modifiers.carbon:[[@LINE+6]]:10: error: `extend` repeated on declaration
// CHECK:STDERR: extend extend base: B;
// CHECK:STDERR: ^~~~~~
// CHECK:STDERR: fail_base_modifiers.carbon:[[@LINE+3]]:3: note: `extend` previously appeared here
// CHECK:STDERR: extend extend base: B;
// CHECK:STDERR: ^~~~~~
extend extend base: B;
}
// CHECK:STDOUT: --- fail_base_modifiers.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: %B: type = class_type @B [template]
// CHECK:STDOUT: %.1: type = struct_type {} [template]
// CHECK:STDOUT: %.2: <witness> = complete_type_witness %.1 [template]
// CHECK:STDOUT: %C1: type = class_type @C1 [template]
// CHECK:STDOUT: %.3: type = tuple_type () [template]
// CHECK:STDOUT: %.4: type = ptr_type %.1 [template]
// CHECK:STDOUT: %.5: type = unbound_element_type %C1, %B [template]
// CHECK:STDOUT: %.6: type = struct_type {.base: %B} [template]
// CHECK:STDOUT: %.7: <witness> = complete_type_witness %.6 [template]
// CHECK:STDOUT: %C2: type = class_type @C2 [template]
// CHECK:STDOUT: %.8: type = unbound_element_type %C2, %B [template]
// CHECK:STDOUT: %C3: type = class_type @C3 [template]
// CHECK:STDOUT: %.9: type = unbound_element_type %C3, %B [template]
// CHECK:STDOUT: %C4: type = class_type @C4 [template]
// CHECK:STDOUT: %.10: type = unbound_element_type %C4, %B [template]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT: %Core: <namespace> = namespace file.%Core.import, [template] {
// CHECK:STDOUT: import Core//prelude
// CHECK:STDOUT: import Core//prelude/operators
// CHECK:STDOUT: import Core//prelude/types
// CHECK:STDOUT: import Core//prelude/operators/arithmetic
// CHECK:STDOUT: import Core//prelude/operators/as
// CHECK:STDOUT: import Core//prelude/operators/bitwise
// CHECK:STDOUT: import Core//prelude/operators/comparison
// CHECK:STDOUT: import Core//prelude/types/bool
// CHECK:STDOUT: }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT: package: <namespace> = namespace [template] {
// CHECK:STDOUT: .Core = imports.%Core
// CHECK:STDOUT: .B = %B.decl
// CHECK:STDOUT: .C1 = %C1.decl
// CHECK:STDOUT: .C2 = %C2.decl
// CHECK:STDOUT: .C3 = %C3.decl
// CHECK:STDOUT: .C4 = %C4.decl
// CHECK:STDOUT: }
// CHECK:STDOUT: %Core.import = import Core
// CHECK:STDOUT: %B.decl: type = class_decl @B [template = constants.%B] {} {}
// CHECK:STDOUT: %C1.decl: type = class_decl @C1 [template = constants.%C1] {} {}
// CHECK:STDOUT: %C2.decl: type = class_decl @C2 [template = constants.%C2] {} {}
// CHECK:STDOUT: %C3.decl: type = class_decl @C3 [template = constants.%C3] {} {}
// CHECK:STDOUT: %C4.decl: type = class_decl @C4 [template = constants.%C4] {} {}
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: class @B {
// CHECK:STDOUT: %.loc11: <witness> = complete_type_witness %.1 [template = constants.%.2]
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT: .Self = constants.%B
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: class @C1 {
// CHECK:STDOUT: %B.ref: type = name_ref B, file.%B.decl [template = constants.%B]
// CHECK:STDOUT: %.loc18: %.5 = base_decl %B, element0 [template]
// CHECK:STDOUT: %.loc19: <witness> = complete_type_witness %.6 [template = constants.%.7]
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT: .Self = constants.%C1
// CHECK:STDOUT: .base = %.loc18
// CHECK:STDOUT: extend name_scope2
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: class @C2 {
// CHECK:STDOUT: %B.ref: type = name_ref B, file.%B.decl [template = constants.%B]
// CHECK:STDOUT: %.loc30: %.8 = base_decl %B, element0 [template]
// CHECK:STDOUT: %.loc31: <witness> = complete_type_witness %.6 [template = constants.%.7]
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT: .Self = constants.%C2
// CHECK:STDOUT: .base = %.loc30
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: class @C3 {
// CHECK:STDOUT: %B.ref: type = name_ref B, file.%B.decl [template = constants.%B]
// CHECK:STDOUT: %.loc41: %.9 = base_decl %B, element0 [template]
// CHECK:STDOUT: %.loc42: <witness> = complete_type_witness %.6 [template = constants.%.7]
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT: .Self = constants.%C3
// CHECK:STDOUT: .base = %.loc41
// CHECK:STDOUT: extend name_scope2
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: class @C4 {
// CHECK:STDOUT: %B.ref: type = name_ref B, file.%B.decl [template = constants.%B]
// CHECK:STDOUT: %.loc51: %.10 = base_decl %B, element0 [template]
// CHECK:STDOUT: %.loc52: <witness> = complete_type_witness %.6 [template = constants.%.7]
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT: .Self = constants.%C4
// CHECK:STDOUT: .base = %.loc51
// CHECK:STDOUT: extend name_scope2
// CHECK:STDOUT: }
// CHECK:STDOUT:
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