mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-10-05 22:02:55 +01:00
Geoff RomerandJon Ross-Perkins
dc32aa2690
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>
107 lines
4.4 KiB
Plaintext
107 lines
4.4 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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// TIP: To test this file alone, run:
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// TIP: bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/check/testdata/class/fail_extend_cycle.carbon
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// TIP: To dump output, run:
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// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/class/fail_extend_cycle.carbon
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base class A {
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}
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base class B {
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// This ensures that the compiler treats A as complete.
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extend base: A;
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}
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// CHECK:STDERR: fail_extend_cycle.carbon:[[@LINE+7]]:1: error: redefinition of `class A`
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// CHECK:STDERR: base class A {
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// CHECK:STDERR: ^~~~~~~~~~~~~~
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// CHECK:STDERR: fail_extend_cycle.carbon:[[@LINE-11]]:1: note: previously defined here
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// CHECK:STDERR: base class A {
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// CHECK:STDERR: ^~~~~~~~~~~~~~
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// CHECK:STDERR:
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base class A {
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extend base: A;
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// CHECK:STDERR: fail_extend_cycle.carbon:[[@LINE+3]]:10: error: name `C` not found
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// CHECK:STDERR: var c: C;
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// CHECK:STDERR: ^
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var c: C;
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}
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// CHECK:STDOUT: --- fail_extend_cycle.carbon
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// CHECK:STDOUT:
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// CHECK:STDOUT: constants {
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// CHECK:STDOUT: %A: type = class_type @A [template]
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// CHECK:STDOUT: %.1: type = struct_type {} [template]
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// CHECK:STDOUT: %.2: <witness> = complete_type_witness %.1 [template]
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// CHECK:STDOUT: %B: type = class_type @B [template]
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// CHECK:STDOUT: %.3: type = tuple_type () [template]
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// CHECK:STDOUT: %.4: type = ptr_type %.1 [template]
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// CHECK:STDOUT: %.5: type = unbound_element_type %B, %A [template]
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// CHECK:STDOUT: %.6: type = struct_type {.base: %A} [template]
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// CHECK:STDOUT: %.7: <witness> = complete_type_witness %.6 [template]
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// CHECK:STDOUT: %.8: type = class_type @.1 [template]
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// CHECK:STDOUT: %.9: type = unbound_element_type %.8, %A [template]
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: imports {
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// CHECK:STDOUT: %Core: <namespace> = namespace file.%Core.import, [template] {
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// CHECK:STDOUT: import Core//prelude
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// CHECK:STDOUT: import Core//prelude/operators
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// CHECK:STDOUT: import Core//prelude/types
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// CHECK:STDOUT: import Core//prelude/operators/arithmetic
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// CHECK:STDOUT: import Core//prelude/operators/as
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// CHECK:STDOUT: import Core//prelude/operators/bitwise
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// CHECK:STDOUT: import Core//prelude/operators/comparison
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// CHECK:STDOUT: import Core//prelude/types/bool
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// CHECK:STDOUT: }
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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 [template] {
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// CHECK:STDOUT: .Core = imports.%Core
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// CHECK:STDOUT: .A = %A.decl
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// CHECK:STDOUT: .B = %B.decl
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// CHECK:STDOUT: }
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// CHECK:STDOUT: %Core.import = import Core
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// CHECK:STDOUT: %A.decl: type = class_decl @A [template = constants.%A] {} {}
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// CHECK:STDOUT: %B.decl: type = class_decl @B [template = constants.%B] {} {}
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// CHECK:STDOUT: %.decl: type = class_decl @.1 [template = constants.%.8] {} {}
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: class @A {
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// CHECK:STDOUT: %.loc12: <witness> = complete_type_witness %.1 [template = constants.%.2]
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// CHECK:STDOUT:
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// CHECK:STDOUT: !members:
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// CHECK:STDOUT: .Self = constants.%A
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: class @B {
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// CHECK:STDOUT: %A.ref: type = name_ref A, file.%A.decl [template = constants.%A]
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// CHECK:STDOUT: %.loc16: %.5 = base_decl %A, element0 [template]
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// CHECK:STDOUT: %.loc17: <witness> = complete_type_witness %.6 [template = constants.%.7]
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// CHECK:STDOUT:
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// CHECK:STDOUT: !members:
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// CHECK:STDOUT: .Self = constants.%B
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// CHECK:STDOUT: .base = %.loc16
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// CHECK:STDOUT: extend name_scope2
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: class @.1 {
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// CHECK:STDOUT: %A.ref: type = name_ref A, file.%A.decl [template = constants.%A]
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// CHECK:STDOUT: %.loc27: %.9 = base_decl %A, element0 [template]
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// CHECK:STDOUT: %C.ref: <error> = name_ref C, <error> [template = <error>]
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// CHECK:STDOUT: %.loc31: <error> = field_decl c, element1 [template]
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// CHECK:STDOUT: %.loc32: <witness> = complete_type_witness <error> [template = <error>]
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// CHECK:STDOUT:
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// CHECK:STDOUT: !members:
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// CHECK:STDOUT: .Self = constants.%.8
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// CHECK:STDOUT: .base = %.loc27
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// CHECK:STDOUT: .c = %.loc31
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// CHECK:STDOUT: extend name_scope2
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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