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https://github.com/carbon-language/carbon-lang.git
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Richard SmithandJon Ross-Perkins
abf23ae7fe
Add an instruction to hold the witness table, along with a corresponding
type to keep things simpler. Add `check/impl.{h,cpp}` to house the new
logic. No checking of impls against interfaces is performed yet.
---------
Co-authored-by: Jon Ross-Perkins <jperkins@google.com>
46 lines
1.6 KiB
Plaintext
46 lines
1.6 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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interface I {}
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// CHECK:STDERR: fail_extend_impl_scope.carbon:[[@LINE+3]]:1: ERROR: `extend impl` can only be used in a class.
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// CHECK:STDERR: extend impl i32 as I {}
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// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~~~
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extend impl i32 as I {}
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// CHECK:STDOUT: --- fail_extend_impl_scope.carbon
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// CHECK:STDOUT:
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// CHECK:STDOUT: constants {
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// CHECK:STDOUT: %.1: type = interface_type @I [template]
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// CHECK:STDOUT: %.2: <witness> = interface_witness @I, () [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 [template] {
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// CHECK:STDOUT: .I = %I.decl
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// CHECK:STDOUT: }
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// CHECK:STDOUT: %I.decl: type = interface_decl @I [template = constants.%.1] {}
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// CHECK:STDOUT: impl_decl @impl {
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// CHECK:STDOUT: %I.ref: type = name_ref I, %I.decl [template = constants.%.1]
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// CHECK:STDOUT: }
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: interface @I {
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// CHECK:STDOUT: %Self: I = bind_symbolic_name Self [symbolic]
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// CHECK:STDOUT:
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// CHECK:STDOUT: !members:
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// CHECK:STDOUT: .Self = %Self
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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: impl @impl: i32 as I {
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// CHECK:STDOUT: %.1: <witness> = interface_witness @I, () [template = constants.%.2]
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// CHECK:STDOUT:
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// CHECK:STDOUT: !members:
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// CHECK:STDOUT: witness = %.1
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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