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Christopher Di Bella
b28e899a8c
`PerformCppOverloadResolution` computes an overload set from a `CppOverloadSetId`, but the compiler sometimes needs to synthesise a local overload set for witnesses. `PerformCppOverloadResolution` now requires callers to produce the `CppOverloadSet` to address this problem.
41 lines
1.9 KiB
C++
41 lines
1.9 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_CPP_OVERLOAD_RESOLUTION_H_
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#define CARBON_TOOLCHAIN_CHECK_CPP_OVERLOAD_RESOLUTION_H_
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#include "toolchain/check/context.h"
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#include "toolchain/sem_ir/function.h"
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#include "toolchain/sem_ir/ids.h"
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namespace Carbon::Check {
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// Checks whether a selected overload is accessible and diagnoses if not.
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// `parent_scope_id`, if specified, describes the scope that was named to find
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// the overload. If unspecified, we assume the overload was found in the class
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// that it is a direct member of, rather than a derived class.
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auto CheckCppOverloadAccess(
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Context& context, SemIR::LocId loc_id, clang::DeclAccessPair overload,
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SemIR::KnownInstId<SemIR::FunctionDecl> overload_inst_id,
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SemIR::NameScopeId parent_scope_id = SemIR::NameScopeId::None) -> void;
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// Resolves which function to call using Clang overload resolution. Returns an
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// instruction referring to that function, or an error instruction if overload
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// resolution failed.
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//
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// A set with a single non-templated function goes through the same rules for
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// overload resolution. This is to make sure that calls that have no viable
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// implicit conversion sequence are rejected even when an implicit conversion is
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// possible. Keeping the same behavior here for consistency and supporting
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// migrations so that the migrated callers from C++ remain valid.
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auto PerformCppOverloadResolution(
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Context& context, SemIR::LocId loc_id,
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const SemIR::CppOverloadSet& overload_set,
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llvm::ArrayRef<SemIR::InstId> template_arg_ids, SemIR::InstId self_id,
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llvm::ArrayRef<SemIR::InstId> arg_ids) -> SemIR::InstId;
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} // namespace Carbon::Check
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#endif // CARBON_TOOLCHAIN_CHECK_CPP_OVERLOAD_RESOLUTION_H_
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