mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-09-28 18:34:54 +01:00
Richard SmithandDana Jansens
bba32900c3
Each of these types takes another type as an operand. Instead of storing that other type as a `TypeId`, store it as an `InstId` so that we can track how it was written, not only its canonical form. The canonical constant values of these types continue to store the canonical constant values of their operands, as normal. --------- Co-authored-by: Dana Jansens <danakj@orodu.net>
42 lines
1.5 KiB
C++
42 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
|
|
|
|
#include "toolchain/check/pointer_dereference.h"
|
|
|
|
#include "llvm/ADT/STLFunctionalExtras.h"
|
|
#include "toolchain/check/context.h"
|
|
#include "toolchain/check/convert.h"
|
|
#include "toolchain/check/inst.h"
|
|
#include "toolchain/parse/node_ids.h"
|
|
#include "toolchain/sem_ir/ids.h"
|
|
|
|
namespace Carbon::Check {
|
|
|
|
auto PerformPointerDereference(
|
|
Context& context, Parse::AnyPointerDeferenceExprId node_id,
|
|
SemIR::InstId base_id,
|
|
llvm::function_ref<auto(SemIR::TypeId not_pointer_type_id)->void>
|
|
diagnose_not_pointer) -> SemIR::InstId {
|
|
// TODO: Once we have a finalized design for a pointer interface, use
|
|
//
|
|
// HandleUnaryOperator(context, node_id, {"Pointer", "Dereference"});
|
|
//
|
|
// to convert to a pointer value.
|
|
base_id = ConvertToValueExpr(context, base_id);
|
|
auto type_id = context.types().GetUnqualifiedType(
|
|
context.insts().Get(base_id).type_id());
|
|
auto result_type_id = SemIR::ErrorInst::SingletonTypeId;
|
|
if (auto pointer_type =
|
|
context.types().TryGetAs<SemIR::PointerType>(type_id)) {
|
|
result_type_id =
|
|
context.types().GetTypeIdForTypeInstId(pointer_type->pointee_id);
|
|
} else if (type_id != SemIR::ErrorInst::SingletonTypeId) {
|
|
diagnose_not_pointer(type_id);
|
|
}
|
|
return AddInst<SemIR::Deref>(
|
|
context, node_id, {.type_id = result_type_id, .pointer_id = base_id});
|
|
}
|
|
|
|
} // namespace Carbon::Check
|