================ @@ -0,0 +1,232 @@ +//===-- ScriptedFrameProvider.cpp ----------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#include "ScriptedFrameProvider.h" +#include "Plugins/Process/scripted/ScriptedFrame.h" +#include "lldb/Core/Debugger.h" +#include "lldb/Core/PluginManager.h" +#include "lldb/Interpreter/Interfaces/ScriptedFrameProviderInterface.h" +#include "lldb/Interpreter/ScriptInterpreter.h" +#include "lldb/Target/Process.h" +#include "lldb/Target/StackFrame.h" +#include "lldb/Target/Thread.h" +#include "lldb/Utility/ScriptedMetadata.h" +#include "lldb/Utility/Status.h" +#include "llvm/Support/Error.h" +#include <cstdint> + +using namespace lldb; +using namespace lldb_private; + +void ScriptedFrameProvider::Initialize() { + PluginManager::RegisterPlugin(GetPluginNameStatic(), + "Provides synthetic frames via scripting", + ScriptedFrameProvider::CreateInstance); +} + +void ScriptedFrameProvider::Terminate() { + PluginManager::UnregisterPlugin(ScriptedFrameProvider::CreateInstance); +} + +llvm::Expected<lldb::SyntheticFrameProviderSP> +ScriptedFrameProvider::CreateInstance(lldb::ThreadSP thread_sp) { + if (!thread_sp) + return llvm::createStringError( + "failed to create scripted frame: invalid thread"); + + ProcessSP process_sp = thread_sp->GetProcess(); + if (!process_sp) + return nullptr; + + Target &target = process_sp->GetTarget(); + + Status error; + if (auto descriptor = target.GetScriptedFrameProviderDescriptor()) { + if (!descriptor->IsValid()) + return llvm::createStringError( + "failed to create scripted frame: invalid scripted metadata"); + + if (!descriptor->AppliesToThread(thread_sp->GetID())) + return nullptr; + + auto provider_sp = std::make_shared<ScriptedFrameProvider>( + thread_sp, *descriptor->scripted_metadata_sp, error); + if (!provider_sp || error.Fail()) + return error.ToError(); + + return provider_sp; + } + + return llvm::createStringError( + "failed to create scripted frame: invalid scripted metadata"); +} + +ScriptedFrameProvider::ScriptedFrameProvider( + ThreadSP thread_sp, const ScriptedMetadata &scripted_metadata, + Status &error) + : SyntheticFrameProvider(thread_sp), m_interface_sp(nullptr) { + if (!m_thread_sp) { + error = Status::FromErrorString( + "cannot create scripted frame provider: Invalid thread"); + return; + } + + ProcessSP process_sp = m_thread_sp->GetProcess(); + if (!process_sp) { + error = Status::FromErrorString( + "cannot create scripted frame provider: Invalid process"); + return; + } + + ScriptInterpreter *script_interp = + process_sp->GetTarget().GetDebugger().GetScriptInterpreter(); + if (!script_interp) { + error = Status::FromErrorString("cannot create scripted frame provider: No " + "script interpreter installed"); + return; + } + + m_interface_sp = script_interp->CreateScriptedFrameProviderInterface(); ---------------- medismailben wrote:
Can't fail https://github.com/llvm/llvm-project/pull/161870 _______________________________________________ lldb-commits mailing list [email protected] https://lists.llvm.org/cgi-bin/mailman/listinfo/lldb-commits
