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https://github.com/carbon-language/carbon-lang.git
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Dana Jansens
90898a8e19
When we fill the witness table with errors, set the witness id to an error too, which signals to impl lookups to not use the impl. Make the use of the `Impl` from the store more consistent once it's been added to the store (or known to be there already).
41 lines
1.6 KiB
C++
41 lines
1.6 KiB
C++
// 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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#ifndef CARBON_TOOLCHAIN_CHECK_IMPL_H_
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#define CARBON_TOOLCHAIN_CHECK_IMPL_H_
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#include "toolchain/check/context.h"
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#include "toolchain/sem_ir/ids.h"
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namespace Carbon::Check {
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// Returns the initial witness value for a new `impl` declaration.
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//
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// `has_definition` is whether this declaration is immediately followed by the
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// opening of the definition.
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auto ImplWitnessForDeclaration(Context& context, const SemIR::Impl& impl,
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bool has_definition) -> SemIR::InstId;
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// Update `impl`'s witness at the start of a definition.
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auto ImplWitnessStartDefinition(Context& context, SemIR::Impl& impl) -> void;
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// Adds the function members to the witness for `impl`.
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auto FinishImplWitness(Context& context, SemIR::ImplId impl_id) -> void;
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// Sets all unset members of the witness for `impl` to the error instruction and
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// sets the witness id in the `Impl` to an error.
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auto FillImplWitnessWithErrors(Context& context, SemIR::Impl& impl) -> void;
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// Sets the `ImplId` in the `ImplWitnessTable`.
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auto AssignImplIdInWitness(Context& context, SemIR::ImplId impl_id,
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SemIR::InstId witness_id) -> void;
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// Returns whether the impl is either `final` explicitly, or implicitly due to
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// being concrete.
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auto IsImplEffectivelyFinal(Context& context, const SemIR::Impl& impl) -> bool;
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} // namespace Carbon::Check
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#endif // CARBON_TOOLCHAIN_CHECK_IMPL_H_
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