624ea68cbc
Change GetNumChildren()/CalculateNumChildren() methods return llvm::Expected This is an NFC change that does not yet add any error handling or change any code to return any errors. This is the second big change in the patch series started with https://github.com/llvm/llvm-project/pull/83501 A follow-up PR will wire up error handling.
61 lines
2.1 KiB
C++
61 lines
2.1 KiB
C++
//===-- Coroutines.h --------------------------------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLDB_SOURCE_PLUGINS_LANGUAGE_CPLUSPLUS_COROUTINES_H
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#define LLDB_SOURCE_PLUGINS_LANGUAGE_CPLUSPLUS_COROUTINES_H
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#include "lldb/Core/ValueObject.h"
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#include "lldb/DataFormatters/TypeSummary.h"
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#include "lldb/DataFormatters/TypeSynthetic.h"
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#include "lldb/Utility/Stream.h"
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namespace lldb_private {
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namespace formatters {
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/// Summary provider for `std::coroutine_handle<T>` from libc++, libstdc++ and
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/// MSVC STL.
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bool StdlibCoroutineHandleSummaryProvider(ValueObject &valobj, Stream &stream,
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const TypeSummaryOptions &options);
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/// Synthetic children frontend for `std::coroutine_handle<promise_type>` from
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/// libc++, libstdc++ and MSVC STL. Shows the compiler-generated `resume` and
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/// `destroy` function pointers as well as the `promise`, if the promise type
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/// is `promise_type != void`.
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class StdlibCoroutineHandleSyntheticFrontEnd
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: public SyntheticChildrenFrontEnd {
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public:
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StdlibCoroutineHandleSyntheticFrontEnd(lldb::ValueObjectSP valobj_sp);
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~StdlibCoroutineHandleSyntheticFrontEnd() override;
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llvm::Expected<uint32_t> CalculateNumChildren() override;
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lldb::ValueObjectSP GetChildAtIndex(uint32_t idx) override;
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lldb::ChildCacheState Update() override;
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bool MightHaveChildren() override;
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size_t GetIndexOfChildWithName(ConstString name) override;
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private:
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lldb::ValueObjectSP m_resume_ptr_sp;
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lldb::ValueObjectSP m_destroy_ptr_sp;
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lldb::ValueObjectSP m_promise_ptr_sp;
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};
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SyntheticChildrenFrontEnd *
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StdlibCoroutineHandleSyntheticFrontEndCreator(CXXSyntheticChildren *,
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lldb::ValueObjectSP);
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} // namespace formatters
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} // namespace lldb_private
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#endif // LLDB_SOURCE_PLUGINS_LANGUAGE_CPLUSPLUS_COROUTINES_H
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