forked from OSchip/llvm-project
118 lines
3.7 KiB
C++
118 lines
3.7 KiB
C++
//===-- CommandObjectSyntax.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 "CommandObjectSyntax.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/Interpreter/Args.h"
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#include "lldb/Interpreter/Options.h"
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#include "lldb/Interpreter/CommandInterpreter.h"
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#include "lldb/Interpreter/CommandReturnObject.h"
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#include "lldb/Interpreter/CommandObjectMultiword.h"
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using namespace lldb;
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using namespace lldb_private;
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//-------------------------------------------------------------------------
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// CommandObjectSyntax
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//-------------------------------------------------------------------------
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CommandObjectSyntax::CommandObjectSyntax (CommandInterpreter &interpreter) :
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CommandObject (interpreter,
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"syntax",
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"Shows the correct syntax for a given debugger command.",
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"syntax <command>")
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{
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CommandArgumentEntry arg;
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CommandArgumentData command_arg;
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// Define the first (and only) variant of this arg.
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command_arg.arg_type = eArgTypeCommandName;
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command_arg.arg_repetition = eArgRepeatPlain;
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// There is only one variant this argument could be; put it into the argument entry.
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arg.push_back (command_arg);
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// Push the data for the first argument into the m_arguments vector.
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m_arguments.push_back (arg);
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}
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CommandObjectSyntax::~CommandObjectSyntax()
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{
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}
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bool
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CommandObjectSyntax::Execute
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(
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Args& command,
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CommandReturnObject &result
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)
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{
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CommandObject::CommandMap::iterator pos;
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CommandObject *cmd_obj;
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const int argc = command.GetArgumentCount();
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if (argc > 0)
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{
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cmd_obj = m_interpreter.GetCommandObject (command.GetArgumentAtIndex(0));
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bool all_okay = true;
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for (int i = 1; i < argc; ++i)
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{
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std::string sub_command = command.GetArgumentAtIndex (i);
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if (! cmd_obj->IsMultiwordObject())
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all_okay = false;
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else
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{
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pos = ((CommandObjectMultiword *) cmd_obj)->m_subcommand_dict.find (sub_command);
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if (pos != ((CommandObjectMultiword *) cmd_obj)->m_subcommand_dict.end())
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cmd_obj = pos->second.get();
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else
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all_okay = false;
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}
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}
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if (all_okay && (cmd_obj != NULL))
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{
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Stream &output_strm = result.GetOutputStream();
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if (cmd_obj->GetOptions() != NULL)
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{
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output_strm.Printf ("\nSyntax: %s\n", cmd_obj->GetSyntax());
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output_strm.Printf ("(Try 'help %s' for more information on command options syntax.)\n",
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cmd_obj->GetCommandName());
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result.SetStatus (eReturnStatusSuccessFinishNoResult);
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}
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else
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{
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output_strm.Printf ("\nSyntax: %s\n", cmd_obj->GetSyntax());
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result.SetStatus (eReturnStatusSuccessFinishNoResult);
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}
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}
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else
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{
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std::string cmd_string;
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command.GetCommandString (cmd_string);
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result.AppendErrorWithFormat ("'%s' is not a known command.\n", cmd_string.c_str());
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result.AppendError ("Try 'help' to see a current list of commands.");
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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.AppendError ("Must call 'syntax' with a valid command.");
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result.SetStatus (eReturnStatusFailed);
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}
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return result.Succeeded();
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}
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