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//===-- CommandObjectSyntax.cpp ---------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "CommandObjectSyntax.h"
// C Includes
// C++ Includes
// Other libraries and framework includes
// Project includes
#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()
{
}
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 != NULL))
{
Stream &output_strm = result.GetOutputStream();
if (cmd_obj->GetOptions() != NULL)
{
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);
result.AppendErrorWithFormat ("'%s' is not a known command.\n", cmd_string.c_str());
result.AppendError ("Try 'help' to see a current list of commands.");
result.SetStatus (eReturnStatusFailed);
}
}
else
{
result.AppendError ("Must call 'syntax' with a valid command.");
result.SetStatus (eReturnStatusFailed);
}
return result.Succeeded();
}
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