unix/SystemInterpreter.hpp

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/* Copyright (c) 2005-2009 Rexx Language Association. All rights reserved.    */
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/*****************************************************************************/
/* REXX Windows Support                                                      */
/*                                                                           */
/* Main Unix interpreter control.  This is the preferred location for        */
/* all platform dependent global variables.                                  */
/* The interpreter does not instantiate an instance of this                  */
/* class, so most variables and methods should be static.                    */
/*                                                                           */
/*                                                                           */
/*****************************************************************************/
 
#ifndef SystemInterpreter_Included
#define SystemInterpreter_Included
 
#include "RexxCore.h"
 
#if defined( HAVE_SIGNAL_H )
# include <signal.h>
#endif
 
#if defined( HAVE_SYS_SIGNAL_H )
# include <sys/signal.h>
#endif
 
 
class InterpreterInstance;
class RexxActivation;
class RexxDateTime;
class RexxBuffer;
 
class SystemInterpreter
{
public:
    static void live(size_t);
    static void liveGeneral(int reason);
 
    static void processStartup();
    static void processShutdown();
 
    static void startInterpreter();
    static void terminateInterpreter();
 
    static void initializeInstance(InterpreterInstance *instance);
    static void terminateInstance(InterpreterInstance *instance);
    static void getCurrentWorkingDirectory(char *);
 
    static RexxObject *popEnvironment(RexxActivation *context);
    static RexxObject *pushEnvironment(RexxActivation *context);
    static void restoreEnvironment(void *CurrentEnv);
    static RexxObject *buildEnvlist();
    static RexxString *qualifyFileSystemName(RexxString *name);
    static void getCurrentTime(RexxDateTime *Date );
    static RexxString *getSystemName();
    static RexxString *getSystemVersion();
    static RexxString *getInternalSystemName();
    static RexxString *getSourceString(RexxString *callType, RexxString * programName);
    static RexxString *getUserid();
    static void releaseResultMemory(void *);
    static void *allocateResultMemory(sizeB_t);
    static RexxString *getMessageHeader(wholenumber_t code);
    static RexxString *getMessageText(wholenumber_t code);
    static bool valueFunction(RexxString *name, RexxObject *newValue, RexxString *selector, RexxObject *&result);
    static RexxString *getDefaultAddressName();
    static bool invokeExternalFunction(RexxActivation *, RexxActivity *, RexxString *, RexxObject **, size_t, size_t, RexxString *, ProtectedObject &);
    static void validateAddressName(RexxString *name );
    static void loadImage(char **imageBuffer, size_t *imageSize);
    static RexxBuffer *readProgram(const char *file_name);
 
    static sigset_t oldmask;       // masks used for setting signal handlers
    static sigset_t newmask;
 
};
 
#endif