C++ CommandReturnObject::Succeeded方法代码示例

    virtual bool
    DoExecute (Args& command,
               CommandReturnObject &result)
    {
        Target *target = m_interpreter.GetDebugger().GetSelectedTarget().get();
        if (!CheckTargetForWatchpointOperations(target, result))
            return false;

        Mutex::Locker locker;
        target->GetWatchpointList().GetListMutex(locker);

        const WatchpointList &watchpoints = target->GetWatchpointList();

        size_t num_watchpoints = watchpoints.GetSize();

        if (num_watchpoints == 0)
        {
            result.AppendError("No watchpoints exist to be enabled.");
            result.SetStatus(eReturnStatusFailed);
            return false;
        }

        if (command.GetArgumentCount() == 0)
        {
            // No watchpoint selected; enable all currently set watchpoints.
            target->EnableAllWatchpoints();
            result.AppendMessageWithFormat("All watchpoints enabled. (%" PRIu64 " watchpoints)\n", (uint64_t)num_watchpoints);
            result.SetStatus(eReturnStatusSuccessFinishNoResult);
        }
        else
        {
            // Particular watchpoints selected; enable them.
            std::vector<uint32_t> wp_ids;
            if (!CommandObjectMultiwordWatchpoint::VerifyWatchpointIDs(target, command, wp_ids))
            {
                result.AppendError("Invalid watchpoints specification.");
                result.SetStatus(eReturnStatusFailed);
                return false;
            }

            int count = 0;
            const size_t size = wp_ids.size();
            for (size_t i = 0; i < size; ++i)
                if (target->EnableWatchpointByID(wp_ids[i]))
                    ++count;
            result.AppendMessageWithFormat("%d watchpoints enabled.\n", count);
            result.SetStatus(eReturnStatusSuccessFinishNoResult);
        }

        return result.Succeeded();
    }

    bool
    DoExecute (Args& command,
             CommandReturnObject &result) override
    {
        Target *target = m_interpreter.GetDebugger().GetSelectedTarget().get();
        if (!CheckTargetForWatchpointOperations(target, result))
            return false;

        std::unique_lock<std::recursive_mutex> lock;
        target->GetWatchpointList().GetListMutex(lock);

        const WatchpointList &watchpoints = target->GetWatchpointList();

        size_t num_watchpoints = watchpoints.GetSize();

        if (num_watchpoints == 0)
        {
            result.AppendError("No watchpoints exist to be ignored.");
            result.SetStatus(eReturnStatusFailed);
            return false;
        }

        if (command.GetArgumentCount() == 0)
        {
            target->IgnoreAllWatchpoints(m_options.m_ignore_count);
            result.AppendMessageWithFormat("All watchpoints ignored. (%" PRIu64 " watchpoints)\n", (uint64_t)num_watchpoints);
            result.SetStatus (eReturnStatusSuccessFinishNoResult);
        }
        else
        {
            // Particular watchpoints selected; ignore them.
            std::vector<uint32_t> wp_ids;
            if (!CommandObjectMultiwordWatchpoint::VerifyWatchpointIDs(target, command, wp_ids))
            {
                result.AppendError("Invalid watchpoints specification.");
                result.SetStatus(eReturnStatusFailed);
                return false;
            }

            int count = 0;
            const size_t size = wp_ids.size();
            for (size_t i = 0; i < size; ++i)
                if (target->IgnoreWatchpointByID(wp_ids[i], m_options.m_ignore_count))
                    ++count;
            result.AppendMessageWithFormat("%d watchpoints ignored.\n",count);
            result.SetStatus (eReturnStatusSuccessFinishNoResult);
        }

        return result.Succeeded();
    }

 virtual bool
 DoExecute (Args& args, CommandReturnObject &result)
 {
     Stream &ostrm = result.GetOutputStream();      
     
     PlatformSP platform_sp (m_interpreter.GetDebugger().GetPlatformList().GetSelectedPlatform());
     if (platform_sp)
     {
         platform_sp->GetStatus (ostrm);
         result.SetStatus (eReturnStatusSuccessFinishResult);            
     }
     else
     {
         result.AppendError ("no platform us currently selected\n");
         result.SetStatus (eReturnStatusFailed);            
     }
     return result.Succeeded();
 }

 bool
 DoExecute (Args& command,
          CommandReturnObject &result)
 {
     ExecutionContext exe_ctx(m_interpreter.GetExecutionContext());
     StackFrame *frame = exe_ctx.GetFramePtr();
     if (frame)
     {
         frame->DumpUsingSettingsFormat (&result.GetOutputStream());
         result.SetStatus (eReturnStatusSuccessFinishResult);
     }
     else
     {
         result.AppendError ("no current frame");
         result.SetStatus (eReturnStatusFailed);
     }
     return result.Succeeded();
 }

    virtual bool
    Execute (CommandInterpreter &interpreter, 
             Args& args,
             CommandReturnObject &result)
    {
        const size_t argc = args.GetArgumentCount();
        if (argc == 0)
        {
            Log::ListAllLogChannels (&result.GetOutputStream());
            result.SetStatus(eReturnStatusSuccessFinishResult);
        }
        else
        {
            for (size_t i=0; i<argc; ++i)
            {
                Log::Callbacks log_callbacks;

                std::string channel(args.GetArgumentAtIndex(i));
                if (Log::GetLogChannelCallbacks (channel.c_str(), log_callbacks))
                {
                    log_callbacks.list_categories (&result.GetOutputStream());
                    result.SetStatus(eReturnStatusSuccessFinishResult);
                }
                else if (channel == "all")
                {
                    Log::ListAllLogChannels (&result.GetOutputStream());
                    result.SetStatus(eReturnStatusSuccessFinishResult);
                }
                else
                {
                    LogChannelSP log_channel_sp (GetLogChannelPluginForChannel(channel.c_str()));
                    if (log_channel_sp)
                    {
                        log_channel_sp->ListCategories(&result.GetOutputStream());
                        result.SetStatus(eReturnStatusSuccessFinishNoResult);
                    }
                    else
                        result.AppendErrorWithFormat("Invalid log channel '%s'.\n", args.GetArgumentAtIndex(0));
                }
            }
        }
        return result.Succeeded();
    }

  bool DoExecute(Args &command, CommandReturnObject &result) override {
    if (!command.empty()) {
      result.AppendErrorWithFormat("'%s' takes no arguments",
                                   m_cmd_name.c_str());
      return false;
    }

    auto &r = repro::Reproducer::Instance();
    if (r.GetGenerator()) {
      result.GetOutputStream() << "Reproducer is in capture mode.\n";
    } else if (r.GetLoader()) {
      result.GetOutputStream() << "Reproducer is in replay mode.\n";
    } else {
      result.GetOutputStream() << "Reproducer is off.\n";
    }

    result.SetStatus(eReturnStatusSuccessFinishResult);
    return result.Succeeded();
  }

  bool DoExecute(Args &command, CommandReturnObject &result) override {
    size_t argc = command.GetArgumentCount();

    if (argc != 1) {
      result.AppendError("'plugin load' requires one argument");
      result.SetStatus(eReturnStatusFailed);
      return false;
    }

    Status error;

    FileSpec dylib_fspec(command[0].ref, true);

    if (m_interpreter.GetDebugger().LoadPlugin(dylib_fspec, error))
      result.SetStatus(eReturnStatusSuccessFinishResult);
    else {
      result.AppendError(error.AsCString());
      result.SetStatus(eReturnStatusFailed);
    }

    return result.Succeeded();
  }

    virtual bool
    DoExecute (Args& args,
             CommandReturnObject &result)
    {
        const size_t argc = args.GetArgumentCount();
        if (argc == 0)
        {
            result.AppendErrorWithFormat("%s takes a log channel and one or more log types.\n", m_cmd_name.c_str());
        }
        else
        {
            Log::Callbacks log_callbacks;

            std::string channel(args.GetArgumentAtIndex(0));
            args.Shift ();  // Shift off the channel
            if (Log::GetLogChannelCallbacks (ConstString(channel.c_str()), log_callbacks))
            {
                log_callbacks.disable (args.GetConstArgumentVector(), &result.GetErrorStream());
                result.SetStatus(eReturnStatusSuccessFinishNoResult);
            }
            else if (channel == "all")
            {
                Log::DisableAllLogChannels(&result.GetErrorStream());
            }
            else
            {
                LogChannelSP log_channel_sp (LogChannel::FindPlugin(channel.c_str()));
                if (log_channel_sp)
                {
                    log_channel_sp->Disable(args.GetConstArgumentVector(), &result.GetErrorStream());
                    result.SetStatus(eReturnStatusSuccessFinishNoResult);
                }
                else
                    result.AppendErrorWithFormat("Invalid log channel '%s'.\n", args.GetArgumentAtIndex(0));
            }
        }
        return result.Succeeded();
    }

 bool
 DoExecute(Args& command, CommandReturnObject &result) override
 {
     bool demangled_any = false;
     bool error_any = false;
     for (size_t i = 0; i < command.GetArgumentCount(); i++)
     {
         auto arg = command.GetArgumentAtIndex(i);
         if (arg && *arg)
         {
             ConstString mangled_cs(arg);
             
             // the actual Mangled class should be strict about this, but on the command line
             // if you're copying mangled names out of 'nm' on Darwin, they will come out with
             // an extra underscore - be willing to strip this on behalf of the user
             // This is the moral equivalent of the -_/-n options to c++filt
             if (mangled_cs.GetStringRef().startswith("__Z"))
                 mangled_cs.SetCString(arg+1);
             
             Mangled mangled(mangled_cs, true);
             if (mangled.GuessLanguage() == lldb::eLanguageTypeC_plus_plus)
             {
                 ConstString demangled(mangled.GetDisplayDemangledName(lldb::eLanguageTypeC_plus_plus));
                 demangled_any = true;
                 result.AppendMessageWithFormat("%s ---> %s\n", arg, demangled.GetCString());
             }
             else
             {
                 error_any = true;
                 result.AppendErrorWithFormat("%s is not a valid C++ mangled name\n", arg);
             }
         }
     }
     
     result.SetStatus(error_any ? lldb::eReturnStatusFailed :
                      (demangled_any ? lldb::eReturnStatusSuccessFinishResult : lldb::eReturnStatusSuccessFinishNoResult));
     return result.Succeeded();
 }

  bool DoExecute(Args &command, CommandReturnObject &result) override {
    bool demangled_any = false;
    bool error_any = false;
    for (auto &entry : command.entries()) {
      if (entry.ref.empty())
        continue;

      // the actual Mangled class should be strict about this, but on the
      // command line if you're copying mangled names out of 'nm' on Darwin,
      // they will come out with an extra underscore - be willing to strip
      // this on behalf of the user.   This is the moral equivalent of the -_/-n
      // options to c++filt
      auto name = entry.ref;
      if (name.startswith("__Z"))
        name = name.drop_front();

      Mangled mangled(name, true);
      if (mangled.GuessLanguage() == lldb::eLanguageTypeC_plus_plus) {
        ConstString demangled(
            mangled.GetDisplayDemangledName(lldb::eLanguageTypeC_plus_plus));
        demangled_any = true;
        result.AppendMessageWithFormat("%s ---> %s\n", entry.ref.str().c_str(),
                                       demangled.GetCString());
      } else {
        error_any = true;
        result.AppendErrorWithFormat("%s is not a valid C++ mangled name\n",
                                     entry.ref.str().c_str());
      }
    }

    result.SetStatus(
        error_any ? lldb::eReturnStatusFailed
                  : (demangled_any ? lldb::eReturnStatusSuccessFinishResult
                                   : lldb::eReturnStatusSuccessFinishNoResult));
    return result.Succeeded();
  }

bool
CommandObjectShow::Execute
(
    CommandInterpreter &interpreter,
    Args& command,
    CommandReturnObject &result
)
{
    CommandInterpreter::VariableMap::iterator pos;

    if (command.GetArgumentCount())
    {
        // The user requested to see the value of a particular variable.

        const char *var_name = command.GetArgumentAtIndex(0);
        StateVariable *var = interpreter.GetStateVariable(var_name);
        if (var)
        {
            var->AppendVariableInformation (result);
            result.SetStatus (eReturnStatusSuccessFinishNoResult);
        }
        else
        {
            result.AppendErrorWithFormat ("Unrecognized variable '%s'; cannot do 'show' command.\n", var_name);
            result.SetStatus (eReturnStatusFailed);
        }
    }
    else
    {
        // The user didn't specify a particular variable, so show the values of all of them.
        interpreter.ShowVariableValues(result);
        result.SetStatus (eReturnStatusSuccessFinishNoResult);
    }

    return result.Succeeded();
}

//.........这里部分代码省略.........
                        range.GetBaseAddress() = sc.symbol->GetAddress();
                    else
                        range.GetBaseAddress() = frame->GetFrameCodeAddress();
                }
                
                if (!range.GetBaseAddress().IsValid())
                {
                    result.AppendError ("invalid frame");
                    result.SetStatus (eReturnStatusFailed);
                    return false;
                }
            }
            
            bool print_sc_header = ranges.size() > 1;
            for (AddressRange cur_range : ranges)
            {
                if (Disassembler::Disassemble (m_interpreter.GetDebugger(),
                                               m_options.arch,
                                               plugin_name,
                                               flavor_string,
                                               m_exe_ctx,
                                               cur_range.GetBaseAddress(),
                                               m_options.num_instructions,
                                               m_options.show_mixed ? m_options.num_lines_context : 0,
                                               options,
                                               result.GetOutputStream()))
                {
                    result.SetStatus (eReturnStatusSuccessFinishResult);
                }
                else
                {
                    if (m_options.start_addr != LLDB_INVALID_ADDRESS)
                        result.AppendErrorWithFormat ("Failed to disassemble memory at 0x%8.8" PRIx64 ".\n", m_options.start_addr);
                    else if (m_options.symbol_containing_addr != LLDB_INVALID_ADDRESS)
                        result.AppendErrorWithFormat ("Failed to disassemble memory in function at 0x%8.8" PRIx64 ".\n", m_options.symbol_containing_addr);
                    result.SetStatus (eReturnStatusFailed);
                }
            }
            if (print_sc_header)
                result.AppendMessage("\n");
        }
        else
        {
            if (ranges.size() == 0)
            {
                // The default action is to disassemble the current frame function.
                if (frame)
                {
                    SymbolContext sc(frame->GetSymbolContext(eSymbolContextFunction | eSymbolContextSymbol));
                    if (sc.function)
                        range = sc.function->GetAddressRange();
                    else if (sc.symbol && sc.symbol->ValueIsAddress())
                    {
                        range.GetBaseAddress() = sc.symbol->GetAddress();
                        range.SetByteSize (sc.symbol->GetByteSize());
                    }
                    else
                        range.GetBaseAddress() = frame->GetFrameCodeAddress();
                }
                else
                {
                    result.AppendError ("invalid frame");
                    result.SetStatus (eReturnStatusFailed);
                    return false;
                }
                ranges.push_back(range);
            }
            
            bool print_sc_header = ranges.size() > 1;
            for (AddressRange cur_range : ranges)
            {
                if (cur_range.GetByteSize() == 0)
                    cur_range.SetByteSize(DEFAULT_DISASM_BYTE_SIZE);

                if (Disassembler::Disassemble (m_interpreter.GetDebugger(),
                                               m_options.arch,
                                               plugin_name,
                                               flavor_string,
                                               m_exe_ctx,
                                               cur_range,
                                               m_options.num_instructions,
                                               m_options.show_mixed ? m_options.num_lines_context : 0,
                                               options,
                                               result.GetOutputStream()))
                {
                    result.SetStatus (eReturnStatusSuccessFinishResult);
                }
                else
                {
                    result.AppendErrorWithFormat ("Failed to disassemble memory at 0x%8.8" PRIx64 ".\n", m_options.start_addr);
                    result.SetStatus (eReturnStatusFailed);            
                }
                if (print_sc_header)
                    result.AppendMessage("\n");
            }
        }
    }

    return result.Succeeded();
}

//.........这里部分代码省略.........
        value.SetValueType(Value::eValueTypeScalar);
        void *type;
        
        char *int_pos;
        if ((int_pos = strstr (const_cast<char*>(arg_type_cstr), "int")))
        {
            Encoding encoding = eEncodingSint;
            
            int width = 0;
            
            if (int_pos > arg_type_cstr + 1)
            {
                result.AppendErrorWithFormat ("Invalid format: %s.\n", arg_type_cstr);
                result.SetStatus (eReturnStatusFailed);
                return false;
            }
            if (int_pos == arg_type_cstr + 1 && arg_type_cstr[0] != 'u')
            {
                result.AppendErrorWithFormat ("Invalid format: %s.\n", arg_type_cstr);
                result.SetStatus (eReturnStatusFailed);
                return false;
            }
            if (arg_type_cstr[0] == 'u')
            {
                encoding = eEncodingUint;
            }
            
            char *width_pos = int_pos + 3;
            
            if (!strcmp (width_pos, "8_t"))
                width = 8;
            else if (!strcmp (width_pos, "16_t"))
                width = 16;
            else if (!strcmp (width_pos, "32_t"))
                width = 32;
            else if (!strcmp (width_pos, "64_t"))
                width = 64;
            else
            {
                result.AppendErrorWithFormat ("Invalid format: %s.\n", arg_type_cstr);
                result.SetStatus (eReturnStatusFailed);
                return false;
            }
            
            type = ast_context.GetBuiltinTypeForEncodingAndBitSize(encoding, width);
            
            if (!type)
            {
                result.AppendErrorWithFormat ("Couldn't get Clang type for format %s (%s integer, width %d).\n",
                                             arg_type_cstr,
                                             (encoding == eEncodingSint ? "signed" : "unsigned"),
                                             width);
                
                result.SetStatus (eReturnStatusFailed);
                return false;
            }
        }
        else if (strchr (arg_type_cstr, '*'))
        {
            if (!strcmp (arg_type_cstr, "void*"))
                type = ast_context.CreatePointerType (ast_context.GetBuiltInType_void ());
            else if (!strcmp (arg_type_cstr, "char*"))
                type = ast_context.GetCStringType (false);
            else
            {
                result.AppendErrorWithFormat ("Invalid format: %s.\n", arg_type_cstr);
                result.SetStatus (eReturnStatusFailed);
                return false;
            }
        }
        else 
        {
            result.AppendErrorWithFormat ("Invalid format: %s.\n", arg_type_cstr);
            result.SetStatus (eReturnStatusFailed);
            return false;
        }
                     
        value.SetContext (Value::eContextTypeClangType, type);
        
        value_list.PushValue(value);
    }
    
    if (!abi->GetArgumentValues (*thread, value_list))
    {
        result.AppendError ("Couldn't get argument values");
        result.SetStatus (eReturnStatusFailed);
        return false;
    }
    
    result.GetOutputStream ().Printf("Arguments : \n");

    for (arg_index = 0; arg_index < num_args; ++arg_index)
    {
        result.GetOutputStream ().Printf ("%zu (%s): ", arg_index, args.GetArgumentAtIndex (arg_index));
        value_list.GetValueAtIndex (arg_index)->Dump (&result.GetOutputStream ());
        result.GetOutputStream ().Printf("\n");
    }
    
    return result.Succeeded();
}

bool
CommandObjectFile::Execute
(
    CommandInterpreter &interpreter,
    Args& command,
    CommandReturnObject &result
)
{
    const char *file_path = command.GetArgumentAtIndex(0);
    Timer scoped_timer(__PRETTY_FUNCTION__, "(dbg) file '%s'", file_path);
    const int argc = command.GetArgumentCount();
    if (argc == 1)
    {
        FileSpec file_spec (file_path);

        if (! file_spec.Exists())
        {
            result.AppendErrorWithFormat ("File '%s' does not exist.\n", file_path);
            result.SetStatus (eReturnStatusFailed);
            return result.Succeeded();
        }

        TargetSP target_sp;

        ArchSpec arch;
        if (m_options.m_arch.IsValid())
            arch = m_options.m_arch;
        else
        {
            arch = lldb_private::GetDefaultArchitecture ();
            if (!arch.IsValid())
                arch = LLDB_ARCH_DEFAULT;
        }
        Debugger &debugger = interpreter.GetDebugger();
        Error error = debugger.GetTargetList().CreateTarget (debugger, file_spec, arch, NULL, true, target_sp);

        if (error.Fail() && !m_options.m_arch.IsValid())
        {
            if (arch == LLDB_ARCH_DEFAULT_32BIT)
                arch = LLDB_ARCH_DEFAULT_64BIT;
            else
                arch = LLDB_ARCH_DEFAULT_32BIT;
            error = debugger.GetTargetList().CreateTarget (debugger, file_spec, arch, NULL, true, target_sp);
        }

        if (target_sp)
        {
            debugger.GetTargetList().SetCurrentTarget(target_sp.get());
            result.AppendMessageWithFormat ("Current executable set to '%s' (%s).\n", file_path, arch.AsCString());
            result.SetStatus (eReturnStatusSuccessFinishNoResult);
        }
        else
        {
            result.AppendError(error.AsCString());
            result.SetStatus (eReturnStatusFailed);
        }
    }
    else
    {
        result.AppendErrorWithFormat("'%s' takes exactly one executable path argument.\n", m_cmd_name.c_str());
        result.SetStatus (eReturnStatusFailed);
    }
    return result.Succeeded();

}

 bool DoExecute(Args &command, CommandReturnObject &result) override {
   m_exe_ctx.GetFrameRef().DumpUsingSettingsFormat(&result.GetOutputStream());
   result.SetStatus(eReturnStatusSuccessFinishResult);
   return result.Succeeded();
 }