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LibrePilot/flight/libraries/PyMite/vm/global.h

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/*
# This file is Copyright 2003, 2006, 2007, 2009, 2010 Dean Hall.
#
# This file is part of the PyMite VM.
# The PyMite VM is free software: you can redistribute it and/or modify
# it under the terms of the GNU GENERAL PUBLIC LICENSE Version 2.
#
# The PyMite VM is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
# A copy of the GNU GENERAL PUBLIC LICENSE Version 2
# is seen in the file COPYING in this directory.
*/
#ifndef __GLOBAL_H__
#define __GLOBAL_H__
/**
* \file
* \brief VM Globals
*
* VM globals header.
*/
/** The global root PmGlobals Dict object */
#define PM_PBUILTINS (pPmObj_t)(gVmGlobal.builtins)
/** The global None object */
#define PM_NONE (pPmObj_t)(gVmGlobal.pnone)
/** The global False object */
#define PM_FALSE (pPmObj_t)(gVmGlobal.pfalse)
/** The global True object */
#define PM_TRUE (pPmObj_t)(gVmGlobal.ptrue)
/** The global integer 0 object */
#define PM_ZERO (pPmObj_t)(gVmGlobal.pzero)
/** The global integer 1 object */
#define PM_ONE (pPmObj_t)(gVmGlobal.pone)
/** The global integer -1 object */
#define PM_NEGONE (pPmObj_t)(gVmGlobal.pnegone)
/** The global string "code" */
#define PM_CODE_STR (pPmObj_t)(gVmGlobal.pcodeStr)
#ifdef HAVE_CLASSES
/** The global string "__init__" */
#define PM_INIT_STR (pPmObj_t)(gVmGlobal.pinitStr)
#endif /* HAVE_CLASSES */
#ifdef HAVE_GENERATORS
/** The global string "Generator" */
#define PM_GENERATOR_STR (pPmObj_t)(gVmGlobal.pgenStr)
/** The global string "next" */
#define PM_NEXT_STR (pPmObj_t)(gVmGlobal.pnextStr)
#endif /* HAVE_GENERATORS */
#ifdef HAVE_ASSERT
/** The global string "Exception" */
#define PM_EXCEPTION_STR (pPmObj_t)(gVmGlobal.pexnStr)
#endif /* HAVE_ASSERT */
#ifdef HAVE_BYTEARRAY
/** The global string "bytearray" */
#define PM_BYTEARRAY_STR (pPmObj_t)(gVmGlobal.pbaStr)
#endif /* HAVE_BYTEARRAY */
/**
* This struct contains ALL of PyMite's globals
*/
typedef struct PmVmGlobal_s
{
/** Global none obj (none) */
pPmObj_t pnone;
/** Global integer 0 obj */
pPmInt_t pzero;
/** Global integer 1 obj */
pPmInt_t pone;
/** Global integer -1 obj */
pPmInt_t pnegone;
/** Global boolean False obj */
pPmInt_t pfalse;
/** Global boolean True obj */
pPmInt_t ptrue;
/** The string "code", used in interp.c RAISE_VARARGS */
pPmString_t pcodeStr;
/** Dict for builtins */
pPmDict_t builtins;
/** Paths to available images */
PmImgPaths_t imgPaths;
/** The single native frame. Static alloc so it won't be GC'd */
PmNativeFrame_t nativeframe;
/** PyMite release value for when an error occurs */
uint8_t errVmRelease;
/** PyMite source file ID number for when an error occurs */
uint8_t errFileId;
/** Line number for when an error occurs */
uint16_t errLineNum;
/** Thread list */
pPmList_t threadList;
/** Ptr to current thread */
pPmThread_t pthread;
#ifdef HAVE_CLASSES
/* NOTE: placing this field before the nativeframe field causes errors */
/** The string "__init__", used in interp.c CALL_FUNCTION */
pPmString_t pinitStr;
#endif /* HAVE_CLASSES */
#ifdef HAVE_GENERATORS
/** The string "Generator", used in interp.c CALL_FUNCTION */
pPmString_t pgenStr;
/** The string "next", used in interp.c FOR_ITER */
pPmString_t pnextStr;
#endif /* HAVE_GENERATORS */
#ifdef HAVE_ASSERT
/** The string "Exception", used in RAISE_VARARGS */
pPmString_t pexnStr;
#endif /* HAVE_ASSERT */
#ifdef HAVE_BYTEARRAY
/** The global string "bytearray" */
pPmString_t pbaStr;
#endif /* HAVE_BYTEARRAY */
#ifdef HAVE_PRINT
/** Remembers when a space is needed before printing the next object */
uint8_t needSoftSpace;
/** Remembers when something has printed since the last newline */
uint8_t somethingPrinted;
#endif /* HAVE_PRINT */
/** Flag to trigger rescheduling */
uint8_t reschedule;
} PmVmGlobal_t,
*pPmVmGlobal_t;
extern volatile PmVmGlobal_t gVmGlobal;
/**
* Initializes the global struct
*
* @return Return status
*/
PmReturn_t global_init(void);
/**
* Sets the builtins dict into the given module's attrs.
*
* If not yet done, loads the "__bt" module via global_loadBuiltins().
* Restrictions described in that functions documentation apply.
*
* @param pmod Module whose attrs receive builtins
* @return Return status
*/
PmReturn_t global_setBuiltins(pPmFunc_t pmod);
/**
* Loads the "__bt" module and sets the builtins dict (PM_PBUILTINS)
* to point to __bt's attributes dict.
* Creates "None" = None entry in builtins.
*
* When run, there should not be any other threads in the interpreter
* thread list yet.
*
* @return Return status
*/
PmReturn_t global_loadBuiltins(void);
#endif /* __GLOBAL_H__ */