forked from OSchip/llvm-project
155 lines
6.8 KiB
C++
155 lines
6.8 KiB
C++
//===-- MICmdBase.h ---------------------------------------------*- 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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//++
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// File: MICmdBase.h
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//
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// Overview: CMICmdBase interface.
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//
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// Environment: Compilers: Visual C++ 12.
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// gcc (Ubuntu/Linaro 4.8.1-10ubuntu9) 4.8.1
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// Libraries: See MIReadmetxt.
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//
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// Copyright: None.
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//--
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#pragma once
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// In-house headers:
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#include "MIUtilString.h"
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#include "MICmnBase.h"
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#include "MICmnResources.h"
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#include "MICmdInvoker.h"
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#include "MICmdFactory.h"
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#include "MICmdData.h"
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#include "MICmnMIResultRecord.h"
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#include "MICmdArgSet.h"
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// Declarations:
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class CMICmnLLDBDebugSessionInfo;
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//++ ============================================================================
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// Details: MI command base class. MI commands derive from this base class.
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// The Command Factory creates command objects and passes them to the
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// Command Invoker. The Invoker takes ownersip of any commands created
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// which means it is the only object to delete them when a command is
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// finished working. Commands do not delete themselves.
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// There are two types of command implicitly defined by the state of
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// the m_bWaitForEventFromSBDebugger flag. There is the event type
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// command which registers (command fn) callbacks with the SBListener
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// does some work then wakes up again when called back, does more work
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// perhaps, ends, then the Invoker calls the command's Acknowledge
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// function. The other type of command is one that just does some work,
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// ends, then the Invoker calls the command's Acknowledge function. No
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// events set up.
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// A command's Execute(), Acknowledge() and event callback functions are
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// carried out in the main thread.
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// A command may use the argument derived object classes (CMICmdArgValBase)
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// to factor handling and parsing of different types of arguments
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// presented to a command. A command will produce an error should it
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// be presented with arguments or options it does not understand.
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// Gotchas: None.
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// Authors: Illya Rudkin 18/02/2014.
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// Changes: None.
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//--
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class CMICmdBase
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: public CMICmnBase
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, public CMICmdInvoker::ICmd
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, public CMICmdFactory::ICmd
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{
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// Methods:
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public:
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/* ctor */ CMICmdBase( void );
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// Overridden:
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public:
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// From CMICmdInvoker::ICmd
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virtual const SMICmdData & GetCmdData( void ) const;
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virtual const CMIUtilString & GetErrorDescription( void ) const;
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virtual bool SetCmdData( const SMICmdData & vCmdData );
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virtual void CmdFinishedTellInvoker( void ) const;
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virtual const CMIUtilString & GetMIResultRecord( void ) const;
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virtual const CMIUtilString & GetMIResultRecordExtra( void ) const;
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virtual bool HasMIResultRecordExtra( void ) const;
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virtual bool ParseArgs( void );
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// From CMICmdFactory::ICmd
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virtual const CMIUtilString & GetMiCmd( void ) const;
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virtual CMICmdFactory::CmdCreatorFnPtr GetCmdCreatorFn( void ) const;
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virtual MIuint GetGUID( void );
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// Overrideable:
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public:
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/* dtor */ virtual ~CMICmdBase( void );
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// Methods:
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protected:
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void SetError( const CMIUtilString & rErrMsg );
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template< class T >
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T * GetOption( const CMIUtilString & vStrOptionName );
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// Attributes:
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protected:
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CMICmdFactory::CmdCreatorFnPtr m_pSelfCreatorFn;
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CMIUtilString m_strCurrentErrDescription; // Reason for Execute or Acknowledge function failure
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SMICmdData m_cmdData; // Holds information/status of *this command. Used by other MI code to report or determine state of a command.
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bool m_bWaitForEventFromSBDebugger; // True = yes event type command wait, false = command calls Acknowledge() straight after Execute() no waiting
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CMIUtilString m_strMiCmd; // The MI text identifying *this command i.e. 'break-insert'
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CMICmnMIResultRecord m_miResultRecord; // This is completed in the Acknowledge() function and returned to the Command Invoker to proceed stdout output. Each command forms 1 response to its input.
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CMIUtilString m_miResultRecordExtra; // This is completed in the Acknowledge() function and returned to the Command Invoker to proceed stdout output. Hack command produce more response text to help the client because of using LLDB
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CMICmnLLDBDebugSessionInfo & m_rLLDBDebugSessionInfo; // Access to command sharing information or data across any and all command based derived classes.
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bool m_bHasResultRecordExtra; // True = Yes command produced additional MI output to its 1 line response, false = no extra MI output formed.
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CMICmdArgSet m_setCmdArgs; // The list of arguments *this command needs to parse from the options string to carry out work.
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};
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//++ ------------------------------------------------------------------------------------
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// Details: Retrieve the command argument or option object pointer so that it can be
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// examined. If the option found and valid get the value (number, string or list
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// - see CMICmdArgValBase class) from it to use with the command's decision
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// making. If the argument is not found the command's error description is set
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// describing the error condition.
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// Type: Template method.
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// Args: vStrOptionName - (R) The text name of the argument or option to search for in
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// the list of the command's possible arguments or options.
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// Return: T * - CMICmdArgValBase derived object.
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// - NULL = function has failed, unable to retrieve the option/arg object.
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// Throws: None.
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//--
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template< class T >
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T * CMICmdBase::GetOption( const CMIUtilString & vStrOptionName )
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{
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CMICmdArgValBase * pPtrBase = nullptr;
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if( !m_setCmdArgs.GetArg( vStrOptionName, pPtrBase ) )
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{
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SetError( CMIUtilString::Format( MIRSRC( IDS_CMD_ERR_OPTION_NOT_FOUND ), m_cmdData.strMiCmd.c_str(), vStrOptionName.c_str() ) );
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return nullptr;
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}
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return static_cast< T * >( pPtrBase );
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}
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//++ ------------------------------------------------------------------------------------
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// Details: Retrieve the command argument or option object pointer using template function
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// CMICmdBase::GetOption(). Should the argument (by name) not be found the
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// command will exit with a failure (set in GetOption()).
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// Type: Preprocessor macro.
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// Args: a - (R) The actual variable's name.
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// b - (R) The type of variable (appended to CMICmdArgVal i.e. CMICmdArgValString).
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// c - (R) The text name of the argument or option to search for in the list of
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// the command's possible arguments or options.
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// Return: T * - CMICmdArgValBase derived object.
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// - NULL = function has failed, unable to retrieve the option/arg object.
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// Throws: None.
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//--
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#define CMICMDBASE_GETOPTION( a, b, c ) \
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CMICmdArgVal##b * a = CMICmdBase::GetOption< CMICmdArgVal##b >( c );\
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if( a == nullptr ) \
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return MIstatus::failure;
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// This comment is to stop compile warning for #define
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