mirror of
https://github.com/intel/llvm.git
synced 2026-01-13 11:02:04 +08:00
46d4aa211f
This is useful in cases such as, e.g. (lldb) help NSString (the user meant type lookup) or (lldb) help kill (the user is looking for process kill) Fixes rdar://24868537 llvm-svn: 262271
123 lines
4.3 KiB
C++
123 lines
4.3 KiB
C++
//===-- CommandObjectSyntax.cpp ---------------------------------*- C++ -*-===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
// C Includes
|
|
// C++ Includes
|
|
// Other libraries and framework includes
|
|
// Project includes
|
|
#include "CommandObjectSyntax.h"
|
|
#include "CommandObjectHelp.h"
|
|
#include "lldb/Interpreter/Args.h"
|
|
#include "lldb/Interpreter/Options.h"
|
|
#include "lldb/Interpreter/CommandInterpreter.h"
|
|
#include "lldb/Interpreter/CommandReturnObject.h"
|
|
#include "lldb/Interpreter/CommandObjectMultiword.h"
|
|
|
|
using namespace lldb;
|
|
using namespace lldb_private;
|
|
|
|
//-------------------------------------------------------------------------
|
|
// CommandObjectSyntax
|
|
//-------------------------------------------------------------------------
|
|
|
|
CommandObjectSyntax::CommandObjectSyntax (CommandInterpreter &interpreter) :
|
|
CommandObjectParsed (interpreter,
|
|
"syntax",
|
|
"Shows the correct syntax for a given debugger command.",
|
|
"syntax <command>")
|
|
{
|
|
CommandArgumentEntry arg;
|
|
CommandArgumentData command_arg;
|
|
|
|
// Define the first (and only) variant of this arg.
|
|
command_arg.arg_type = eArgTypeCommandName;
|
|
command_arg.arg_repetition = eArgRepeatPlain;
|
|
|
|
// There is only one variant this argument could be; put it into the argument entry.
|
|
arg.push_back (command_arg);
|
|
|
|
// Push the data for the first argument into the m_arguments vector.
|
|
m_arguments.push_back (arg);
|
|
}
|
|
|
|
CommandObjectSyntax::~CommandObjectSyntax() = default;
|
|
|
|
bool
|
|
CommandObjectSyntax::DoExecute (Args& command, CommandReturnObject &result)
|
|
{
|
|
CommandObject::CommandMap::iterator pos;
|
|
CommandObject *cmd_obj;
|
|
const size_t argc = command.GetArgumentCount();
|
|
|
|
if (argc > 0)
|
|
{
|
|
cmd_obj = m_interpreter.GetCommandObject (command.GetArgumentAtIndex(0));
|
|
bool all_okay = true;
|
|
for (size_t i = 1; i < argc; ++i)
|
|
{
|
|
std::string sub_command = command.GetArgumentAtIndex (i);
|
|
if (!cmd_obj->IsMultiwordObject())
|
|
{
|
|
all_okay = false;
|
|
break;
|
|
}
|
|
else
|
|
{
|
|
cmd_obj = cmd_obj->GetSubcommandObject(sub_command.c_str());
|
|
if (!cmd_obj)
|
|
{
|
|
all_okay = false;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (all_okay && (cmd_obj != nullptr))
|
|
{
|
|
Stream &output_strm = result.GetOutputStream();
|
|
if (cmd_obj->GetOptions() != nullptr)
|
|
{
|
|
output_strm.Printf ("\nSyntax: %s\n", cmd_obj->GetSyntax());
|
|
output_strm.Printf ("(Try 'help %s' for more information on command options syntax.)\n",
|
|
cmd_obj->GetCommandName());
|
|
result.SetStatus (eReturnStatusSuccessFinishNoResult);
|
|
}
|
|
else
|
|
{
|
|
output_strm.Printf ("\nSyntax: %s\n", cmd_obj->GetSyntax());
|
|
result.SetStatus (eReturnStatusSuccessFinishNoResult);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
std::string cmd_string;
|
|
command.GetCommandString (cmd_string);
|
|
|
|
StreamString error_msg_stream;
|
|
const bool generate_apropos = true;
|
|
const bool generate_type_lookup = false;
|
|
CommandObjectHelp::GenerateAdditionalHelpAvenuesMessage(&error_msg_stream,
|
|
cmd_string.c_str(),
|
|
nullptr,
|
|
nullptr,
|
|
generate_apropos,
|
|
generate_type_lookup);
|
|
result.AppendErrorWithFormat ("%s", error_msg_stream.GetData());
|
|
result.SetStatus (eReturnStatusFailed);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
result.AppendError ("Must call 'syntax' with a valid command.");
|
|
result.SetStatus (eReturnStatusFailed);
|
|
}
|
|
|
|
return result.Succeeded();
|
|
}
|