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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>
45 lines
1.4 KiB
Plaintext
45 lines
1.4 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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interface Empty {
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}
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impl i32 as Empty {
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}
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// CHECK:STDOUT: --- empty.carbon
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// CHECK:STDOUT:
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// CHECK:STDOUT: constants {
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// CHECK:STDOUT: %.1: type = interface_type @Empty [template]
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// CHECK:STDOUT: %.2: <witness> = interface_witness @Empty, () [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: .Empty = %Empty.decl
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// CHECK:STDOUT: }
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// CHECK:STDOUT: %Empty.decl: type = interface_decl @Empty [template = constants.%.1] {}
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// CHECK:STDOUT: impl_decl @impl {
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// CHECK:STDOUT: %Empty.ref: type = name_ref Empty, %Empty.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 @Empty {
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// CHECK:STDOUT: %Self: Empty = 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 Empty {
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// CHECK:STDOUT: %.1: <witness> = interface_witness @Empty, () [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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