Files
carbon-lang/toolchain/check/cpp/call.h
T
Boaz Brickner 5705b94da8 Add PerformCallToCppFunction() which calls simplified version of PerformCppOverloadResolution() before calling PerformCallToFunction() (#6122)
Instead of calling `PerformCppOverloadResolution()` and use the complex
return value to call `PerformCallToFunction()`, we call
`PerformCallToCppFunction()` which will call both
`PerformCppOverloadResolution()` and `PerformCallToFunction()`.

Followup of #6112.
Part of #5995.
2025-09-29 14:26:23 +00:00

37 lines
1.5 KiB
C++

// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
// Exceptions. See /LICENSE for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
#ifndef CARBON_TOOLCHAIN_CHECK_CPP_CALL_H_
#define CARBON_TOOLCHAIN_CHECK_CPP_CALL_H_
#include "toolchain/check/context.h"
#include "toolchain/sem_ir/ids.h"
namespace Carbon::Check {
// Checks and builds SemIR for a call to a C++ function in the given overload
// set with self `self_id` and arguments `arg_ids`.
//
// Chooses the best viable C++ function by performing Clang overloading
// resolution over the overload set.
//
// Preserves the given self, if set. If not set, and the function is a C++
// member operator, self will be set to the first argument, which in turn will
// be removed from the given args.
//
// A set with a single non-templated function goes through the same rules for
// overloading resolution. This is to make sure that calls that have no viable
// implicit conversion sequence are rejected even when an implicit conversion is
// possible. Keeping the same behavior here for consistency and supporting
// migrations so that the migrated callers from C++ remain valid.
auto PerformCallToCppFunction(Context& context, SemIR::LocId loc_id,
SemIR::CppOverloadSetId overload_set_id,
SemIR::InstId self_id,
llvm::ArrayRef<SemIR::InstId> arg_ids)
-> SemIR::InstId;
} // namespace Carbon::Check
#endif // CARBON_TOOLCHAIN_CHECK_CPP_CALL_H_