llvm-project/lldb/source/Commands/CommandObjectSyntax.cpp
Greg Clayton c982c768d2 Merged Eli Friedman's linux build changes where he added Makefile files that
enabled LLVM make style building and made this compile LLDB on Mac OS X. We
can now iterate on this to make the build work on both linux and macosx.

llvm-svn: 108009
2010-07-09 20:39:50 +00:00

107 lines
3.4 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.
//
//===----------------------------------------------------------------------===//
#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 () :
CommandObject ("syntax",
"Shows the correct syntax for a given debugger command.",
"syntax <command>")
{
}
CommandObjectSyntax::~CommandObjectSyntax()
{
}
bool
CommandObjectSyntax::Execute
(
CommandInterpreter &interpreter,
Args& command,
CommandReturnObject &result
)
{
CommandObject::CommandMap::iterator pos;
CommandObject *cmd_obj;
const int argc = command.GetArgumentCount();
if (argc > 0)
{
cmd_obj = interpreter.GetCommandObject (command.GetArgumentAtIndex(0));
bool all_okay = true;
for (int i = 1; i < argc; ++i)
{
std::string sub_command = command.GetArgumentAtIndex (i);
if (! cmd_obj->IsMultiwordObject())
all_okay = false;
else
{
pos = ((CommandObjectMultiword *) cmd_obj)->m_subcommand_dict.find (sub_command);
if (pos != ((CommandObjectMultiword *) cmd_obj)->m_subcommand_dict.end())
cmd_obj = pos->second.get();
else
all_okay = false;
}
}
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());
//cmd_obj->GetOptions()->GenerateOptionUsage (output_strm, cmd_obj);
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();
}