ScriptInterpreterNone.cpp

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//===-- ScriptInterpreterNone.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 "ScriptInterpreterNone.h"
#include "lldb/Core/Debugger.h"
#include "lldb/Core/PluginManager.h"
#include "lldb/Utility/Stream.h"
#include "lldb/Utility/StringList.h"
 
#include "llvm/Support/Threading.h"
 
#include <mutex>
 
using namespace lldb;
using namespace lldb_private;
 
LLDB_PLUGIN_DEFINE(ScriptInterpreterNone)
 
ScriptInterpreterNone::ScriptInterpreterNone(Debugger &debugger)
    : ScriptInterpreter(debugger, eScriptLanguageNone) {}
 
ScriptInterpreterNone::~ScriptInterpreterNone() = default;
 
static const char *no_interpreter_err_msg =
    "error: Embedded script interpreter unavailable. LLDB was built without "
    "scripting language support.\n";
 
bool ScriptInterpreterNone::ExecuteOneLine(llvm::StringRef command,
                                           CommandReturnObject *,
                                           const ExecuteScriptOptions &) {
  m_debugger.GetAsyncErrorStream()->PutCString(no_interpreter_err_msg);
  return false;
}
 
void ScriptInterpreterNone::ExecuteInterpreterLoop() {
  m_debugger.GetAsyncErrorStream()->PutCString(no_interpreter_err_msg);
}
 
void ScriptInterpreterNone::Initialize() {
  static llvm::once_flag g_once_flag;
 
  llvm::call_once(g_once_flag, []() {
    PluginManager::RegisterPlugin(GetPluginNameStatic(),
                                  GetPluginDescriptionStatic(),
                                  lldb::eScriptLanguageNone, CreateInstance);
  });
}
 
void ScriptInterpreterNone::Terminate() {}
 
lldb::ScriptInterpreterSP
ScriptInterpreterNone::CreateInstance(Debugger &debugger) {
  return std::make_shared<ScriptInterpreterNone>(debugger);
}
 
llvm::StringRef ScriptInterpreterNone::GetPluginDescriptionStatic() {
  return "Null script interpreter";
}