5a98841673
Execute which was never going to get run and another ExecuteRawCommandString. Took the knowledge of how to prepare raw & parsed commands out of CommandInterpreter and put it in CommandObject where it belongs. Also took all the cases where there were the subcommands of Multiword commands declared in the .h file for the overall command and moved them into the .cpp file. Made the CommandObject flags work for raw as well as parsed commands. Made "expr" use the flags so that it requires you to be paused to run "expr". llvm-svn: 158235
310 lines
10 KiB
C++
310 lines
10 KiB
C++
//===-- CommandObjectMultiword.cpp ------------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "lldb/Interpreter/CommandObjectMultiword.h"
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// C Includes
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// C++ Includes
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// Other libraries and framework includes
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// Project includes
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#include "lldb/Core/Debugger.h"
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#include "lldb/Interpreter/CommandInterpreter.h"
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#include "lldb/Interpreter/Options.h"
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#include "lldb/Interpreter/CommandReturnObject.h"
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using namespace lldb;
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using namespace lldb_private;
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//-------------------------------------------------------------------------
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// CommandObjectMultiword
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//-------------------------------------------------------------------------
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CommandObjectMultiword::CommandObjectMultiword
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(
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CommandInterpreter &interpreter,
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const char *name,
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const char *help,
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const char *syntax,
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uint32_t flags
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) :
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CommandObject (interpreter, name, help, syntax, flags)
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{
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}
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CommandObjectMultiword::~CommandObjectMultiword ()
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{
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}
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CommandObjectSP
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CommandObjectMultiword::GetSubcommandSP (const char *sub_cmd, StringList *matches)
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{
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CommandObjectSP return_cmd_sp;
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CommandObject::CommandMap::iterator pos;
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if (!m_subcommand_dict.empty())
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{
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pos = m_subcommand_dict.find (sub_cmd);
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if (pos != m_subcommand_dict.end()) {
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// An exact match; append the sub_cmd to the 'matches' string list.
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if (matches)
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matches->AppendString(sub_cmd);
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return_cmd_sp = pos->second;
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}
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else
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{
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StringList local_matches;
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if (matches == NULL)
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matches = &local_matches;
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int num_matches = CommandObject::AddNamesMatchingPartialString (m_subcommand_dict, sub_cmd, *matches);
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if (num_matches == 1)
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{
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// Cleaner, but slightly less efficient would be to call back into this function, since I now
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// know I have an exact match...
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sub_cmd = matches->GetStringAtIndex(0);
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pos = m_subcommand_dict.find(sub_cmd);
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if (pos != m_subcommand_dict.end())
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return_cmd_sp = pos->second;
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}
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}
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}
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return return_cmd_sp;
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}
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CommandObject *
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CommandObjectMultiword::GetSubcommandObject (const char *sub_cmd, StringList *matches)
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{
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return GetSubcommandSP(sub_cmd, matches).get();
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}
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bool
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CommandObjectMultiword::LoadSubCommand
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(
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const char *name,
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const CommandObjectSP& cmd_obj
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)
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{
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CommandMap::iterator pos;
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bool success = true;
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pos = m_subcommand_dict.find(name);
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if (pos == m_subcommand_dict.end())
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{
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m_subcommand_dict[name] = cmd_obj;
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m_interpreter.CrossRegisterCommand (name, GetCommandName());
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}
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else
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success = false;
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return success;
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}
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bool
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CommandObjectMultiword::Execute(const char *args_string, CommandReturnObject &result)
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{
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Args args (args_string);
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const size_t argc = args.GetArgumentCount();
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if (argc == 0)
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{
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GenerateHelpText (result);
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}
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else
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{
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const char *sub_command = args.GetArgumentAtIndex (0);
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if (sub_command)
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{
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if (::strcasecmp (sub_command, "help") == 0)
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{
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GenerateHelpText (result);
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}
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else if (!m_subcommand_dict.empty())
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{
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StringList matches;
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CommandObject *sub_cmd_obj = GetSubcommandObject(sub_command, &matches);
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if (sub_cmd_obj != NULL)
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{
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// Now call CommandObject::Execute to process and options in 'rest_of_line'. From there
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// the command-specific version of Execute will be called, with the processed arguments.
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args.Shift();
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sub_cmd_obj->Execute (args_string, result);
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}
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else
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{
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std::string error_msg;
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int num_subcmd_matches = matches.GetSize();
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if (num_subcmd_matches > 0)
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error_msg.assign ("ambiguous command ");
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else
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error_msg.assign ("invalid command ");
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error_msg.append ("'");
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error_msg.append (GetCommandName());
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error_msg.append (" ");
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error_msg.append (sub_command);
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error_msg.append ("'");
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if (num_subcmd_matches > 0)
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{
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error_msg.append (" Possible completions:");
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for (int i = 0; i < num_subcmd_matches; i++)
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{
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error_msg.append ("\n\t");
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error_msg.append (matches.GetStringAtIndex (i));
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}
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}
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error_msg.append ("\n");
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result.AppendRawError (error_msg.c_str(), error_msg.size());
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result.SetStatus (eReturnStatusFailed);
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}
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}
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else
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{
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result.AppendErrorWithFormat ("'%s' does not have any subcommands.\n", GetCommandName());
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result.SetStatus (eReturnStatusFailed);
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}
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}
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}
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return result.Succeeded();
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}
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void
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CommandObjectMultiword::GenerateHelpText (CommandReturnObject &result)
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{
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// First time through here, generate the help text for the object and
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// push it to the return result object as well
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Stream &output_stream = result.GetOutputStream();
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output_stream.PutCString ("The following subcommands are supported:\n\n");
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CommandMap::iterator pos;
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uint32_t max_len = m_interpreter.FindLongestCommandWord (m_subcommand_dict);
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if (max_len)
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max_len += 4; // Indent the output by 4 spaces.
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for (pos = m_subcommand_dict.begin(); pos != m_subcommand_dict.end(); ++pos)
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{
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std::string indented_command (" ");
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indented_command.append (pos->first);
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if (pos->second->WantsRawCommandString ())
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{
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std::string help_text (pos->second->GetHelp());
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help_text.append (" This command takes 'raw' input (no need to quote stuff).");
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m_interpreter.OutputFormattedHelpText (result.GetOutputStream(),
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indented_command.c_str(),
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"--",
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help_text.c_str(),
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max_len);
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}
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else
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m_interpreter.OutputFormattedHelpText (result.GetOutputStream(),
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indented_command.c_str(),
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"--",
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pos->second->GetHelp(),
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max_len);
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}
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output_stream.PutCString ("\nFor more help on any particular subcommand, type 'help <command> <subcommand>'.\n");
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result.SetStatus (eReturnStatusSuccessFinishNoResult);
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}
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int
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CommandObjectMultiword::HandleCompletion
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(
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Args &input,
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int &cursor_index,
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int &cursor_char_position,
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int match_start_point,
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int max_return_elements,
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bool &word_complete,
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StringList &matches
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)
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{
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// Any of the command matches will provide a complete word, otherwise the individual
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// completers will override this.
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word_complete = true;
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if (cursor_index == 0)
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{
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CommandObject::AddNamesMatchingPartialString (m_subcommand_dict,
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input.GetArgumentAtIndex(0),
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matches);
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if (matches.GetSize() == 1
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&& matches.GetStringAtIndex(0) != NULL
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&& strcmp (input.GetArgumentAtIndex(0), matches.GetStringAtIndex(0)) == 0)
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{
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StringList temp_matches;
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CommandObject *cmd_obj = GetSubcommandObject (input.GetArgumentAtIndex(0),
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&temp_matches);
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if (cmd_obj != NULL)
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{
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matches.DeleteStringAtIndex (0);
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input.Shift();
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cursor_char_position = 0;
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input.AppendArgument ("");
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return cmd_obj->HandleCompletion (input,
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cursor_index,
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cursor_char_position,
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match_start_point,
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max_return_elements,
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word_complete,
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matches);
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}
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else
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return matches.GetSize();
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}
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else
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return matches.GetSize();
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}
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else
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{
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CommandObject *sub_command_object = GetSubcommandObject (input.GetArgumentAtIndex(0),
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&matches);
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if (sub_command_object == NULL)
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{
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return matches.GetSize();
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}
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else
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{
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// Remove the one match that we got from calling GetSubcommandObject.
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matches.DeleteStringAtIndex(0);
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input.Shift();
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cursor_index--;
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return sub_command_object->HandleCompletion (input,
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cursor_index,
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cursor_char_position,
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match_start_point,
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max_return_elements,
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word_complete,
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matches);
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}
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}
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}
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const char *
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CommandObjectMultiword::GetRepeatCommand (Args ¤t_command_args, uint32_t index)
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{
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index++;
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if (current_command_args.GetArgumentCount() <= index)
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return NULL;
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CommandObject *sub_command_object = GetSubcommandObject (current_command_args.GetArgumentAtIndex(index));
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if (sub_command_object == NULL)
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return NULL;
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return sub_command_object->GetRepeatCommand(current_command_args, index);
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}
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