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Richard SmithandJon Ross-Perkins
054dfca685
Don't attempt to defer overload resolution by creating a `CppOverloadSet`; this was incorrect as we weren't saving the complete clang::OverloadCandidateSet, resulting in template candidates not being found. Moreover, saving the overload candidate set would be expensive, as the representation is surprisingly large, and is unnecessary since we're about to build a call. In passing, improve the diagnostics for overload resolution failure to use Clang's operator overload resolution messages rather than its call overload resolution messages. This fixes calls to templated operator overloads, which is the final piece needed for us to successfully compile an iostream-based "Hello world" program. --------- Co-authored-by: Jon Ross-Perkins <jperkins@google.com>
31 lines
1.2 KiB
C++
31 lines
1.2 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_OPERATORS_H_
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#define CARBON_TOOLCHAIN_CHECK_CPP_OPERATORS_H_
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#include "toolchain/check/context.h"
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#include "toolchain/check/operator.h"
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#include "toolchain/sem_ir/ids.h"
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namespace Carbon::Check {
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// Looks up the given operator in the Clang AST generated when importing C++
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// code using argument dependent lookup (ADL) and return overload set
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// instruction.
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auto LookupCppOperator(Context& context, SemIR::LocId loc_id, Operator op,
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llvm::ArrayRef<SemIR::InstId> arg_ids) -> SemIR::InstId;
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// Returns whether the decl is an operator member function.
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auto IsCppOperatorMethodDecl(clang::Decl* decl) -> bool;
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// Returns whether the specified instruction refers to a C++ overloaded operator
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// that is a method. If so, the first operand will be passed as `self` rather
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// than as the first argument.
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auto IsCppOperatorMethod(Context& context, SemIR::InstId inst_id) -> bool;
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} // namespace Carbon::Check
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#endif // CARBON_TOOLCHAIN_CHECK_CPP_OPERATORS_H_
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