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https://github.com/carbon-language/carbon-lang.git
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Boaz Brickner
7c13bddc92
This allows to find the spaceship `operator<=>` when a comparison operator is not available, and `operator==` when `operator!=` is not available. Support added to both lookup and overload resolution, by adding `OperatorRewriteInfo` and propagating it in `CppOverloadSet`. In case overload resolution chooses to use an operator which requires rewriting, we emit a `TODO` since rewriting is not yet supported. Part of #6170.
47 lines
1.5 KiB
C++
47 lines
1.5 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_SEM_IR_CPP_OVERLOAD_SET_H_
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#define CARBON_TOOLCHAIN_SEM_IR_CPP_OVERLOAD_SET_H_
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#include "clang/AST/Decl.h"
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#include "clang/AST/UnresolvedSet.h"
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#include "clang/Sema/Overload.h"
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#include "common/ostream.h"
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#include "toolchain/base/value_store.h"
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#include "toolchain/sem_ir/ids.h"
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namespace Carbon::SemIR {
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// An overloaded C++ function.
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struct CppOverloadSet : public Printable<CppOverloadSet> {
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// The function's name.
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NameId name_id;
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// The parent scope.
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NameScopeId parent_scope_id;
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// The naming class in the name lookup that found this overload set.
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clang::CXXRecordDecl* naming_class;
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// List of all named decls found at name lookup.
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// TODO: Find a good small size for the UnresolvedSet<size> or rework how we
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// store the candidates.
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clang::UnresolvedSet<4> candidate_functions;
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/// Information about operator rewrites to consider when adding operator
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/// functions to a candidate set.
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clang::OverloadCandidateSet::OperatorRewriteInfo operator_rewrite_info;
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auto Print(llvm::raw_ostream& out) const -> void {
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out << "name: " << name_id << ", parent_scope: " << parent_scope_id;
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}
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};
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using CppOverloadSetStore = ValueStore<CppOverloadSetId, CppOverloadSet>;
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} // namespace Carbon::SemIR
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#endif // CARBON_TOOLCHAIN_SEM_IR_CPP_OVERLOAD_SET_H_
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