text: 
  /* Python interpreter top-level routines, including init/exit */
  
  #include "Python.h"
  
  #include "Python-ast.h"
  #undef Yield /* undefine macro conflicting with winbase.h */
  #include "grammar.h"
  #include "node.h"
  #include "token.h"
  #include "parsetok.h"
  #include "errcode.h"
  #include "code.h"
  #include "compile.h"
  #include "symtable.h"
  #include "pyarena.h"
  #include "ast.h"
  #include "eval.h"
  #include "marshal.h"
  #include "abstract.h"
  
  #ifdef HAVE_SIGNAL_H
  #include <signal.h>
  #endif
  
  #ifdef MS_WINDOWS
  #include "malloc.h" /* for alloca */
  #endif
  
  #ifdef HAVE_LANGINFO_H
  #include <locale.h>
  #include <langinfo.h>
  #endif
  
  #ifdef MS_WINDOWS
  #undef BYTE
  #include "windows.h"
  #endif
  
  #ifdef __cplusplus
  extern "C" {
  #endif
  
  extern char *Py_GetPath(void);
  
  extern grammar _PyParser_Grammar; /* From graminit.c */
  
  /* Forward */
  static void initmain(void);
  static void initsite(void);
  static PyObject *run_mod(mod_ty, const char *, PyObject *, PyObject *,
                            PyCompilerFlags *, PyArena *);
  static PyObject *run_pyc_file(FILE *, const char *, PyObject *, PyObject *,
                                PyCompilerFlags *);
  static void err_input(perrdetail *);
  static void initsigs(void);
  static void wait_for_thread_shutdown(void);
  static void call_sys_exitfunc(void);
  static void call_ll_exitfuncs(void);
  extern void _PyUnicode_Init(void);
  extern void _PyUnicode_Fini(void);
  
  #ifdef WITH_THREAD
  extern void _PyGILState_Init(PyInterpreterState *, PyThreadState *);
  extern void _PyGILState_Fini(void);
  #endif /* WITH_THREAD */
  
  int Py_DebugFlag; /* Needed by parser.c */
  int Py_VerboseFlag; /* Needed by import.c */
  int Py_InteractiveFlag; /* Needed by Py_FdIsInteractive() below */
  int Py_InspectFlag; /* Needed to determine whether to exit at SystemExit */
  int Py_NoSiteFlag; /* Suppress 'import site' */
  int Py_BytesWarningFlag; /* Warn on str(bytes) and str(buffer) */
  int Py_DontWriteBytecodeFlag; /* Suppress writing bytecode files (*.py[co]) */
  int Py_UseClassExceptionsFlag = 1; /* Needed by bltinmodule.c: deprecated */
  int Py_FrozenFlag; /* Needed by getpath.c */
  int Py_UnicodeFlag = 0; /* Needed by compile.c */
  int Py_IgnoreEnvironmentFlag; /* e.g. PYTHONPATH, PYTHONHOME */
  /* _XXX Py_QnewFlag should go away in 2.3.  It's true iff -Qnew is passed,
    on the command line, and is used in 2.2 by ceval.c to make all "/" divisions
    true divisions (which they will be in 2.3). */
  int _Py_QnewFlag = 0;
  int Py_NoUserSiteDirectory = 0; /* for -s and site.py */
  int Py_HashRandomizationFlag = 0; /* for -R and PYTHONHASHSEED */
  
  
  /* Hack to force loading of object files */
  int (*_PyOS_mystrnicmp_hack)(const char *, const char *, Py_ssize_t) = \
      PyOS_mystrnicmp; /* Python/pystrcmp.o */
  
  /* PyModule_GetWarningsModule is no longer necessary as of 2.6
  since _warnings is builtin.  This API should not be used. */
  PyObject *
  PyModule_GetWarningsModule(void)
  {
      return PyImport_ImportModule("warnings");
  }
  
  static void
  _PyDebug_PrintTotalRefs(void)
  {
  #ifdef Py_REF_DEBUG
      Py_ssize_t total;
  
      if (!Py_GETENV("PYTHONSHOWREFCOUNT")) {
          return;
      }
  
      total = _Py_GetRefTotal();
      fprintf(stderr, "[%" PY_FORMAT_SIZE_T "d refs]\n", total);
  #endif
  }
  
  static int initialized = 0;
  
  /* API to access the initialized flag -- useful for esoteric use */
  
  int
  Py_IsInitialized(void)
  {
      return initialized;
  }
  
  /* Global initializations.  Can be undone by Py_Finalize().  Don't
     call this twice without an intervening Py_Finalize() call.  When
     initializations fail, a fatal error is issued and the function does
     not return.  On return, the first thread and interpreter state have
     been created.
  
     Locking: you must hold the interpreter lock while calling this.
     (If the lock has not yet been initialized, that's equivalent to
     having the lock, but you cannot use multiple threads.)
  
  */
  
  static int
  add_flag(int flag, const char *envs)
  {
      int env = atoi(envs);
      if (flag < env)
          flag = env;
      if (flag < 1)
          flag = 1;
      return flag;
  }
  
  static int
  isatty_no_error(PyObject *sys_stream)
  {
      PyObject *sys_isatty = PyObject_CallMethod(sys_stream, "isatty", "");
      if (sys_isatty) {
          int isatty = PyObject_IsTrue(sys_isatty);
          Py_DECREF(sys_isatty);
          if (isatty >= 0)
              return isatty;
      }
      PyErr_Clear();
      return 0;
  }
  
  void
  Py_InitializeEx(int install_sigs)
  {
      PyInterpreterState *interp;
      PyThreadState *tstate;
      PyObject *bimod, *sysmod;
      char *p;
      char *icodeset = NULL; /* On Windows, input codeset may theoretically
                                differ from output codeset. */
      char *codeset = NULL;
      char *errors = NULL;
      int free_codeset = 0;
      int overridden = 0;
      PyObject *sys_stream;
  #if defined(Py_USING_UNICODE) && defined(HAVE_LANGINFO_H) && defined(CODESET)
      char *saved_locale, *loc_codeset;
  #endif
  #ifdef MS_WINDOWS
      char ibuf[128];
      char buf[128];
  #endif
      extern void _Py_ReadyTypes(void);
  
      if (initialized)
          return;
      initialized = 1;
  
      if ((p = Py_GETENV("PYTHONDEBUG")) && *p != '\0')
          Py_DebugFlag = add_flag(Py_DebugFlag, p);
      if ((p = Py_GETENV("PYTHONVERBOSE")) && *p != '\0')
          Py_VerboseFlag = add_flag(Py_VerboseFlag, p);
      if ((p = Py_GETENV("PYTHONOPTIMIZE")) && *p != '\0')
          Py_OptimizeFlag = add_flag(Py_OptimizeFlag, p);
      if ((p = Py_GETENV("PYTHONDONTWRITEBYTECODE")) && *p != '\0')
          Py_DontWriteBytecodeFlag = add_flag(Py_DontWriteBytecodeFlag, p);
      /* The variable is only tested for existence here; _PyRandom_Init will
         check its value further. */
      if ((p = Py_GETENV("PYTHONHASHSEED")) && *p != '\0')
          Py_HashRandomizationFlag = add_flag(Py_HashRandomizationFlag, p);
  
      _PyRandom_Init();
  
      interp = PyInterpreterState_New();
      if (interp == NULL)
          Py_FatalError("Py_Initialize: can't make first interpreter");
  
      tstate = PyThreadState_New(interp);
      if (tstate == NULL)
          Py_FatalError("Py_Initialize: can't make first thread");
      (void) PyThreadState_Swap(tstate);
  
      _Py_ReadyTypes();
  
      if (!_PyFrame_Init())
          Py_FatalError("Py_Initialize: can't init frames");
  
      if (!_PyInt_Init())
          Py_FatalError("Py_Initialize: can't init ints");
  
      if (!_PyLong_Init())
          Py_FatalError("Py_Initialize: can't init longs");
  
      if (!PyByteArray_Init())
          Py_FatalError("Py_Initialize: can't init bytearray");
  
      _PyFloat_Init();
  
      interp->modules = PyDict_New();
      if (interp->modules == NULL)
          Py_FatalError("Py_Initialize: can't make modules dictionary");
      interp->modules_reloading = PyDict_New();
      if (interp->modules_reloading == NULL)
          Py_FatalError("Py_Initialize: can't make modules_reloading dictionary");
  
  #ifdef Py_USING_UNICODE
      /* Init Unicode implementation; relies on the codec registry */
      _PyUnicode_Init();
  #endif
  
      bimod = _PyBuiltin_Init();
      if (bimod == NULL)
          Py_FatalError("Py_Initialize: can't initialize __builtin__");
      interp->builtins = PyModule_GetDict(bimod);
      if (interp->builtins == NULL)
          Py_FatalError("Py_Initialize: can't initialize builtins dict");
      Py_INCREF(interp->builtins);
  
      sysmod = _PySys_Init();
      if (sysmod == NULL)
          Py_FatalError("Py_Initialize: can't initialize sys");
      interp->sysdict = PyModule_GetDict(sysmod);
      if (interp->sysdict == NULL)
          Py_FatalError("Py_Initialize: can't initialize sys dict");
      Py_INCREF(interp->sysdict);
      _PyImport_FixupExtension("sys", "sys");
      PySys_SetPath(Py_GetPath());
      PyDict_SetItemString(interp->sysdict, "modules",
                           interp->modules);
  
      _PyImport_Init();
  
      /* initialize builtin exceptions */
      _PyExc_Init();
      _PyImport_FixupExtension("exceptions", "exceptions");
  
      /* phase 2 of builtins */
      _PyImport_FixupExtension("__builtin__", "__builtin__");
  
      _PyImportHooks_Init();
  
      if (install_sigs)
          initsigs(); /* Signal handling stuff, including initintr() */
  
      /* Initialize warnings. */
      _PyWarnings_Init();
      if (PySys_HasWarnOptions()) {
          PyObject *warnings_module = PyImport_ImportModule("warnings");
          if (!warnings_module)
              PyErr_Clear();
          Py_XDECREF(warnings_module);
      }
  
      initmain(); /* Module __main__ */
  
      /* auto-thread-state API, if available */
  #ifdef WITH_THREAD
      _PyGILState_Init(interp, tstate);
  #endif /* WITH_THREAD */
  
      if (!Py_NoSiteFlag)
          initsite(); /* Module site */
  
      if ((p = Py_GETENV("PYTHONIOENCODING")) && *p != '\0') {
          p = icodeset = codeset = strdup(p);
          free_codeset = 1;
          errors = strchr(p, ':');
          if (errors) {
              *errors = '\0';
              errors++;
          }
          overridden = 1;
      }
  
  #if defined(Py_USING_UNICODE) && defined(HAVE_LANGINFO_H) && defined(CODESET)
      /* On Unix, set the file system encoding according to the
         user's preference, if the CODESET names a well-known
         Python codec, and Py_FileSystemDefaultEncoding isn't
         initialized by other means. Also set the encoding of
         stdin and stdout if these are terminals, unless overridden.  */
  
      if (!overridden || !Py_FileSystemDefaultEncoding) {
          saved_locale = strdup(setlocale(LC_CTYPE, NULL));
          setlocale(LC_CTYPE, "");
          loc_codeset = nl_langinfo(CODESET);
          if (loc_codeset && *loc_codeset) {
              PyObject *enc = PyCodec_Encoder(loc_codeset);
              if (enc) {
                  loc_codeset = strdup(loc_codeset);
                  Py_DECREF(enc);
              } else {
                  if (PyErr_ExceptionMatches(PyExc_LookupError)) {
                      PyErr_Clear();
                      loc_codeset = NULL;
                  } else {
                      PyErr_Print();
                      exit(1);
                  }
              }
          } else
              loc_codeset = NULL;
          setlocale(LC_CTYPE, saved_locale);
          free(saved_locale);
  
          if (!overridden) {
              codeset = icodeset = loc_codeset;
              free_codeset = 1;
          }
  
          /* Initialize Py_FileSystemDefaultEncoding from
             locale even if PYTHONIOENCODING is set. */
          if (!Py_FileSystemDefaultEncoding) {
              Py_FileSystemDefaultEncoding = loc_codeset;
              if (!overridden)
                  free_codeset = 0;
          }
      }
  #endif
  
  #ifdef MS_WINDOWS
      if (!overridden) {
          icodeset = ibuf;
          codeset = buf;
          sprintf(ibuf, "cp%d", GetConsoleCP());
          sprintf(buf, "cp%d", GetConsoleOutputCP());
      }
  #endif
  
      if (codeset) {
          sys_stream = PySys_GetObject("stdin");
          if ((overridden || isatty_no_error(sys_stream)) &&
              PyFile_Check(sys_stream)) {
              if (!PyFile_SetEncodingAndErrors(sys_stream, icodeset, errors))
                  Py_FatalError("Cannot set codeset of stdin");
          }
  
          sys_stream = PySys_GetObject("stdout");
          if ((overridden || isatty_no_error(sys_stream)) &&
              PyFile_Check(sys_stream)) {
              if (!PyFile_SetEncodingAndErrors(sys_stream, codeset, errors))
                  Py_FatalError("Cannot set codeset of stdout");
          }
  
          sys_stream = PySys_GetObject("stderr");
          if ((overridden || isatty_no_error(sys_stream)) &&
              PyFile_Check(sys_stream)) {
              if (!PyFile_SetEncodingAndErrors(sys_stream, codeset, errors))
                  Py_FatalError("Cannot set codeset of stderr");
          }
  
          if (free_codeset)
              free(codeset);
      }
  }
  
  void
  Py_Initialize(void)
  {
      Py_InitializeEx(1);
  }
  
  
  #ifdef COUNT_ALLOCS
  extern void dump_counts(FILE*);
  #endif
  
  /* Undo the effect of Py_Initialize().
  
     Beware: if multiple interpreter and/or thread states exist, these
     are not wiped out; only the current thread and interpreter state
     are deleted.  But since everything else is deleted, those other
     interpreter and thread states should no longer be used.
  
     (XXX We should do better, e.g. wipe out all interpreters and
     threads.)
  
     Locking: as above.
  
  */
  
  void
  Py_Finalize(void)
  {
      PyInterpreterState *interp;
      PyThreadState *tstate;
  
      if (!initialized)
          return;
  
      wait_for_thread_shutdown();
  
      /* The interpreter is still entirely intact at this point, and the
       * exit funcs may be relying on that.  In particular, if some thread
       * or exit func is still waiting to do an import, the import machinery
       * expects Py_IsInitialized() to return true.  So don't say the
       * interpreter is uninitialized until after the exit funcs have run.
       * Note that Threading.py uses an exit func to do a join on all the
       * threads created thru it, so this also protects pending imports in
       * the threads created via Threading.
       */
      call_sys_exitfunc();
      initialized = 0;
  
      /* Get current thread state and interpreter pointer */
      tstate = PyThreadState_GET();
      interp = tstate->interp;
  
      /* Disable signal handling */
      PyOS_FiniInterrupts();
  
      /* Clear type lookup cache */
      PyType_ClearCache();
  
      /* Collect garbage.  This may call finalizers; it's nice to call these
       * before all modules are destroyed.
       * XXX If a __del__ or weakref callback is triggered here, and tries to
       * XXX import a module, bad things can happen, because Python no
       * XXX longer believes it's initialized.
       * XXX     Fatal Python error: Interpreter not initialized (version mismatch?)
       * XXX is easy to provoke that way.  I've also seen, e.g.,
       * XXX     Exception exceptions.ImportError: 'No module named sha'
       * XXX         in <function callback at 0x008F5718> ignored
       * XXX but I'm unclear on exactly how that one happens.  In any case,
       * XXX I haven't seen a real-life report of either of these.
       */
      PyGC_Collect();
  #ifdef COUNT_ALLOCS
      /* With COUNT_ALLOCS, it helps to run GC multiple times:
         each collection might release some types from the type
         list, so they become garbage. */
      while (PyGC_Collect() > 0)
          /* nothing */;
  #endif
  
      /* Destroy all modules */
      PyImport_Cleanup();
  
      /* Collect final garbage.  This disposes of cycles created by
       * new-style class definitions, for example.
       * XXX This is disabled because it caused too many problems.  If
       * XXX a __del__ or weakref callback triggers here, Python code has
       * XXX a hard time running, because even the sys module has been
       * XXX cleared out (sys.stdout is gone, sys.excepthook is gone, etc).
       * XXX One symptom is a sequence of information-free messages
       * XXX coming from threads (if a __del__ or callback is invoked,
       * XXX other threads can execute too, and any exception they encounter
       * XXX triggers a comedy of errors as subsystem after subsystem
       * XXX fails to find what it *expects* to find in sys to help report
       * XXX the exception and consequent unexpected failures).  I've also
       * XXX seen segfaults then, after adding print statements to the
       * XXX Python code getting called.
       */
  #if 0
      PyGC_Collect();
  #endif
  
      /* Destroy the database used by _PyImport_{Fixup,Find}Extension */
      _PyImport_Fini();
  
      /* Debugging stuff */
  #ifdef COUNT_ALLOCS
      if (Py_GETENV("PYTHONSHOWALLOCCOUNT")) {
          dump_counts(stderr);
      }
  #endif
  
      _PyDebug_PrintTotalRefs();
  
  #ifdef Py_TRACE_REFS
      /* Display all objects still alive -- this can invoke arbitrary
       * __repr__ overrides, so requires a mostly-intact interpreter.
       * Alas, a lot of stuff may still be alive now that will be cleaned
       * up later.
       */
      if (Py_GETENV("PYTHONDUMPREFS"))
          _Py_PrintReferences(stderr);
  #endif /* Py_TRACE_REFS */
  
      /* Clear interpreter state */
      PyInterpreterState_Clear(interp);
  
      /* Now we decref the exception classes.  After this point nothing
         can raise an exception.  That's okay, because each Fini() method
         below has been checked to make sure no exceptions are ever
         raised.
      */
  
      _PyExc_Fini();
  
      /* Cleanup auto-thread-state */
  #ifdef WITH_THREAD
      _PyGILState_Fini();
  #endif /* WITH_THREAD */
  
      /* Delete current thread */
      PyThreadState_Swap(NULL);
      PyInterpreterState_Delete(interp);
  
      /* Sundry finalizers */
      PyMethod_Fini();
      PyFrame_Fini();
      PyCFunction_Fini();
      PyTuple_Fini();
      PyList_Fini();
      PySet_Fini();
      PyString_Fini();
      PyByteArray_Fini();
      PyInt_Fini();
      PyFloat_Fini();
      PyDict_Fini();
      _PyRandom_Fini();
  
  #ifdef Py_USING_UNICODE
      /* Cleanup Unicode implementation */
      _PyUnicode_Fini();
  #endif
  
      /* XXX Still allocated:
         - various static ad-hoc pointers to interned strings
         - int and float free list blocks
         - whatever various modules and libraries allocate
      */
  
      PyGrammar_RemoveAccelerators(&_PyParser_Grammar);
  
  #ifdef Py_TRACE_REFS
      /* Display addresses (& refcnts) of all objects still alive.
       * An address can be used to find the repr of the object, printed
       * above by _Py_PrintReferences.
       */
      if (Py_GETENV("PYTHONDUMPREFS"))
          _Py_PrintReferenceAddresses(stderr);
  #endif /* Py_TRACE_REFS */
  #ifdef PYMALLOC_DEBUG
      if (Py_GETENV("PYTHONMALLOCSTATS"))
          _PyObject_DebugMallocStats();
  #endif
  
      call_ll_exitfuncs();
  }
  
  /* Create and initialize a new interpreter and thread, and return the
     new thread.  This requires that Py_Initialize() has been called
     first.
  
     Unsuccessful initialization yields a NULL pointer.  Note that *no*
     exception information is available even in this case -- the
     exception information is held in the thread, and there is no
     thread.
  
     Locking: as above.
  
  */
  
  PyThreadState *
  Py_NewInterpreter(void)
  {
      PyInterpreterState *interp;
      PyThreadState *tstate, *save_tstate;
      PyObject *bimod, *sysmod;
  
      if (!initialized)
          Py_FatalError("Py_NewInterpreter: call Py_Initialize first");
  
      interp = PyInterpreterState_New();
      if (interp == NULL)
          return NULL;
  
      tstate = PyThreadState_New(interp);
      if (tstate == NULL) {
          PyInterpreterState_Delete(interp);
          return NULL;
      }
  
      save_tstate = PyThreadState_Swap(tstate);
  
      /* XXX The following is lax in error checking */
  
      interp->modules = PyDict_New();
      interp->modules_reloading = PyDict_New();
  
      bimod = _PyImport_FindExtension("__builtin__", "__builtin__");
      if (bimod != NULL) {
          interp->builtins = PyModule_GetDict(bimod);
          if (interp->builtins == NULL)
              goto handle_error;
          Py_INCREF(interp->builtins);
      }
      sysmod = _PyImport_FindExtension("sys", "sys");
      if (bimod != NULL && sysmod != NULL) {
          interp->sysdict = PyModule_GetDict(sysmod);
          if (interp->sysdict == NULL)
              goto handle_error;
          Py_INCREF(interp->sysdict);
          PySys_SetPath(Py_GetPath());
          PyDict_SetItemString(interp->sysdict, "modules",
                               interp->modules);
          _PyImportHooks_Init();
          initmain();
          if (!Py_NoSiteFlag)
              initsite();
      }
  
      if (!PyErr_Occurred())
          return tstate;
  
  handle_error:
      /* Oops, it didn't work.  Undo it all. */
  
      PyErr_Print();
      PyThreadState_Clear(tstate);
      PyThreadState_Swap(save_tstate);
      PyThreadState_Delete(tstate);
      PyInterpreterState_Delete(interp);
  
      return NULL;
  }
  
  /* Delete an interpreter and its last thread.  This requires that the
     given thread state is current, that the thread has no remaining
     frames, and that it is its interpreter's only remaining thread.
     It is a fatal error to violate these constraints.
  
     (Py_Finalize() doesn't have these constraints -- it zaps
     everything, regardless.)
  
     Locking: as above.
  
  */
  
  void
  Py_EndInterpreter(PyThreadState *tstate)
  {
      PyInterpreterState *interp = tstate->interp;
  
      if (tstate != PyThreadState_GET())
          Py_FatalError("Py_EndInterpreter: thread is not current");
      if (tstate->frame != NULL)
          Py_FatalError("Py_EndInterpreter: thread still has a frame");
      if (tstate != interp->tstate_head || tstate->next != NULL)
          Py_FatalError("Py_EndInterpreter: not the last thread");
  
      PyImport_Cleanup();
      PyInterpreterState_Clear(interp);
      PyThreadState_Swap(NULL);
      PyInterpreterState_Delete(interp);
  }
  
  static char *progname = "python";
  
  void
  Py_SetProgramName(char *pn)
  {
      if (pn && *pn)
          progname = pn;
  }
  
  char *
  Py_GetProgramName(void)
  {
      return progname;
  }
  
  static char *default_home = NULL;
  
  void
  Py_SetPythonHome(char *home)
  {
      default_home = home;
  }
  
  char *
  Py_GetPythonHome(void)
  {
      char *home = default_home;
      if (home == NULL && !Py_IgnoreEnvironmentFlag)
          home = Py_GETENV("PYTHONHOME");
      return home;
  }
  
  /* Create __main__ module */
  
  static void
  initmain(void)
  {
      PyObject *m, *d;
      m = PyImport_AddModule("__main__");
      if (m == NULL)
          Py_FatalError("can't create __main__ module");
      d = PyModule_GetDict(m);
      if (PyDict_GetItemString(d, "__builtins__") == NULL) {
          PyObject *bimod = PyImport_ImportModule("__builtin__");
          if (bimod == NULL ||
              PyDict_SetItemString(d, "__builtins__", bimod) != 0)
              Py_FatalError("can't add __builtins__ to __main__");
          Py_XDECREF(bimod);
      }
  }
  
  /* Import the site module (not into __main__ though) */
  
  static void
  initsite(void)
  {
      PyObject *m;
      m = PyImport_ImportModule("site");
      if (m == NULL) {
          PyErr_Print();
          Py_Finalize();
          exit(1);
      }
      else {
          Py_DECREF(m);
      }
  }
  
  /* Parse input from a file and execute it */
  
  int
  PyRun_AnyFileExFlags(FILE *fp, const char *filename, int closeit,
                       PyCompilerFlags *flags)
  {
      if (filename == NULL)
          filename = "???";
      if (Py_FdIsInteractive(fp, filename)) {
          int err = PyRun_InteractiveLoopFlags(fp, filename, flags);
          if (closeit)
              fclose(fp);
          return err;
      }
      else
          return PyRun_SimpleFileExFlags(fp, filename, closeit, flags);
  }
  
  int
  PyRun_InteractiveLoopFlags(FILE *fp, const char *filename, PyCompilerFlags *flags)
  {
      PyObject *v;
      int ret;
      PyCompilerFlags local_flags;
  
      if (flags == NULL) {
          flags = &local_flags;
          local_flags.cf_flags = 0;
      }
      v = PySys_GetObject("ps1");
      if (v == NULL) {
          PySys_SetObject("ps1", v = PyString_FromString(">>> "));
          Py_XDECREF(v);
      }
      v = PySys_GetObject("ps2");
      if (v == NULL) {
          PySys_SetObject("ps2", v = PyString_FromString("... "));
          Py_XDECREF(v);
      }
      for (;;) {
          ret = PyRun_InteractiveOneFlags(fp, filename, flags);
          _PyDebug_PrintTotalRefs();
          if (ret == E_EOF)
              return 0;
          /*
          if (ret == E_NOMEM)
              return -1;
          */
      }
  }
  
  #if 0
  /* compute parser flags based on compiler flags */
  #define PARSER_FLAGS(flags) \
      ((flags) ? ((((flags)->cf_flags & PyCF_DONT_IMPLY_DEDENT) ? \
                    PyPARSE_DONT_IMPLY_DEDENT : 0)) : 0)
  #endif
  #if 1
  /* Keep an example of flags with future keyword support. */
  #define PARSER_FLAGS(flags) \
      ((flags) ? ((((flags)->cf_flags & PyCF_DONT_IMPLY_DEDENT) ? \
                    PyPARSE_DONT_IMPLY_DEDENT : 0) \
                  | (((flags)->cf_flags & CO_FUTURE_PRINT_FUNCTION) ? \
                     PyPARSE_PRINT_IS_FUNCTION : 0) \
                  | (((flags)->cf_flags & CO_FUTURE_UNICODE_LITERALS) ? \
                     PyPARSE_UNICODE_LITERALS : 0) \
                  ) : 0)
  #endif
  
  int
  PyRun_InteractiveOneFlags(FILE *fp, const char *filename, PyCompilerFlags *flags)
  {
      PyObject *m, *d, *v, *w;
      mod_ty mod;
      PyArena *arena;
      char *ps1 = "", *ps2 = "";
      int errcode = 0;
  
      v = PySys_GetObject("ps1");
      if (v != NULL) {
          v = PyObject_Str(v);
          if (v == NULL)
              PyErr_Clear();
          else if (PyString_Check(v))
              ps1 = PyString_AsString(v);
      }
      w = PySys_GetObject("ps2");
      if (w != NULL) {
          w = PyObject_Str(w);
          if (w == NULL)
              PyErr_Clear();
          else if (PyString_Check(w))
              ps2 = PyString_AsString(w);
      }
      arena = PyArena_New();
      if (arena == NULL) {
          Py_XDECREF(v);
          Py_XDECREF(w);
          return -1;
      }
      mod = PyParser_ASTFromFile(fp, filename,
                                 Py_single_input, ps1, ps2,
                                 flags, &errcode, arena);
      Py_XDECREF(v);
      Py_XDECREF(w);
      if (mod == NULL) {
          PyArena_Free(arena);
          if (errcode == E_EOF) {
              PyErr_Clear();
              return E_EOF;
          }
          PyErr_Print();
          return -1;
      }
      m = PyImport_AddModule("__main__");
      if (m == NULL) {
          PyArena_Free(arena);
          return -1;
      }
      d = PyModule_GetDict(m);
      v = run_mod(mod, filename, d, d, flags, arena);
      PyArena_Free(arena);
      if (v == NULL) {
          PyErr_Print();
          return -1;
      }
      Py_DECREF(v);
      if (Py_FlushLine())
          PyErr_Clear();
      return 0;
  }
  
  /* Check whether a file maybe a pyc file: Look at the extension,
     the file type, and, if we may close it, at the first few bytes. */
  
  static int
  maybe_pyc_file(FILE *fp, const char* filename, const char* ext, int closeit)
  {
      if (strcmp(ext, ".pyc") == 0 || strcmp(ext, ".pyo") == 0)
          return 1;
  
      /* Only look into the file if we are allowed to close it, since
         it then should also be seekable. */
      if (closeit) {
          /* Read only two bytes of the magic. If the file was opened in
             text mode, the bytes 3 and 4 of the magic (\r\n) might not
             be read as they are on disk. */
          unsigned int halfmagic = PyImport_GetMagicNumber() & 0xFFFF;
          unsigned char buf[2];
          /* Mess:  In case of -x, the stream is NOT at its start now,
             and ungetc() was used to push back the first newline,
             which makes the current stream position formally undefined,
             and a x-platform nightmare.
             Unfortunately, we have no direct way to know whether -x
             was specified.  So we use a terrible hack:  if the current
             stream position is not 0, we assume -x was specified, and
             give up.  Bug 132850 on SourceForge spells out the
             hopelessness of trying anything else (fseek and ftell
             don't work predictably x-platform for text-mode files).
          */
          int ispyc = 0;
          if (ftell(fp) == 0) {
              if (fread(buf, 1, 2, fp) == 2 &&
                  ((unsigned int)buf[1]<<8 | buf[0]) == halfmagic)
                  ispyc = 1;
              rewind(fp);
          }
          return ispyc;
      }
      return 0;
  }
  
  int
  PyRun_SimpleFileExFlags(FILE *fp, const char *filename, int closeit,
                          PyCompilerFlags *flags)
  {
      PyObject *m, *d, *v;
      const char *ext;
      int set_file_name = 0, len, ret = -1;
  
      m = PyImport_AddModule("__main__");
      if (m == NULL)
          return -1;
      Py_INCREF(m);
      d = PyModule_GetDict(m);
      if (PyDict_GetItemString(d, "__file__") == NULL) {
          PyObject *f = PyString_FromString(filename);
          if (f == NULL)
              goto done;
          if (PyDict_SetItemString(d, "__file__", f) < 0) {
              Py_DECREF(f);
              goto done;
          }
          set_file_name = 1;
          Py_DECREF(f);
      }
      len = strlen(filename);
      ext = filename + len - (len > 4 ? 4 : 0);
      if (maybe_pyc_file(fp, filename, ext, closeit)) {
          /* Try to run a pyc file. First, re-open in binary */
          if (closeit)
              fclose(fp);
          if ((fp = fopen(filename, "rb")) == NULL) {
              fprintf(stderr, "python: Can't reopen .pyc file\n");
              goto done;
          }
          /* Turn on optimization if a .pyo file is given */
          if (strcmp(ext, ".pyo") == 0)
              Py_OptimizeFlag = 1;
          v = run_pyc_file(fp, filename, d, d, flags);
      } else {
          v = PyRun_FileExFlags(fp, filename, Py_file_input, d, d,
                                closeit, flags);
      }
      if (v == NULL) {
          PyErr_Print();
          goto done;
      }
      Py_DECREF(v);
      if (Py_FlushLine())
          PyErr_Clear();
      ret = 0;
    done:
      if (set_file_name && PyDict_DelItemString(d, "__file__"))
          PyErr_Clear();
      Py_DECREF(m);
      return ret;
  }
  
  int
  PyRun_SimpleStringFlags(const char *command, PyCompilerFlags *flags)
  {
      PyObject *m, *d, *v;
      m = PyImport_AddModule("__main__");
      if (m == NULL)
          return -1;
      d = PyModule_GetDict(m);
      v = PyRun_StringFlags(command, Py_file_input, d, d, flags);
      if (v == NULL) {
          PyErr_Print();
          return -1;
      }
      Py_DECREF(v);
      if (Py_FlushLine())
          PyErr_Clear();
      return 0;
  }
  
  static int
  parse_syntax_error(PyObject *err, PyObject **message, const char **filename,
                     int *lineno, int *offset, const char **text)
  {
      long hold;
      PyObject *v;
  
      /* old style errors */
      if (PyTuple_Check(err))
          return PyArg_ParseTuple(err, "O(ziiz)", message, filename,
                                  lineno, offset, text);
  
      *message = NULL;
  
      /* new style errors.  `err' is an instance */
      *message = PyObject_GetAttrString(err, "msg");
      if (!*message)
          goto finally;
  
      v = PyObject_GetAttrString(err, "filename");
      if (!v)
          goto finally;
      if (v == Py_None) {
          Py_DECREF(v);
          *filename = NULL;
      }
      else {
          *filename = PyString_AsString(v);
          Py_DECREF(v);
          if (!*filename)
              goto finally;
      }
  
      v = PyObject_GetAttrString(err, "lineno");
      if (!v)
          goto finally;
      hold = PyInt_AsLong(v);
      Py_DECREF(v);
      if (hold < 0 && PyErr_Occurred())
          goto finally;
      *lineno = (int)hold;
  
      v = PyObject_GetAttrString(err, "offset");
      if (!v)
          goto finally;
      if (v == Py_None) {
          *offset = -1;
          Py_DECREF(v);
      } else {
          hold = PyInt_AsLong(v);
          Py_DECREF(v);
          if (hold < 0 && PyErr_Occurred())
              goto finally;
          *offset = (int)hold;
      }
  
      v = PyObject_GetAttrString(err, "text");
      if (!v)
          goto finally;
      if (v == Py_None) {
          Py_DECREF(v);
          *text = NULL;
      }
      else {
          *text = PyString_AsString(v);
          Py_DECREF(v);
          if (!*text)
              goto finally;
      }
      return 1;
  
  finally:
      Py_XDECREF(*message);
      return 0;
  }
  
  void
  PyErr_Print(void)
  {
      PyErr_PrintEx(1);
  }
  
  static void
  print_error_text(PyObject *f, int offset, const char *text)
  {
      char *nl;
      if (offset >= 0) {
          if (offset > 0 && offset == strlen(text) && text[offset - 1] == '\n')
              offset--;
          for (;;) {
              nl = strchr(text, '\n');
              if (nl == NULL || nl-text >= offset)
                  break;
              offset -= (int)(nl+1-text);
              text = nl+1;
          }
          while (*text == ' ' || *text == '\t') {
              text++;
              offset--;
          }
      }
      PyFile_WriteString("    ", f);
      PyFile_WriteString(text, f);
      if (*text == '\0' || text[strlen(text)-1] != '\n')
          PyFile_WriteString("\n", f);
      if (offset == -1)
          return;
      PyFile_WriteString("    ", f);
      offset--;
      while (offset > 0) {
          PyFile_WriteString(" ", f);
          offset--;
      }
      PyFile_WriteString("^\n", f);
  }
  
  static void
  handle_system_exit(void)
  {
      PyObject *exception, *value, *tb;
      int exitcode = 0;
  
      if (Py_InspectFlag)
          /* Don't exit if -i flag was given. This flag is set to 0
           * when entering interactive mode for inspecting. */
          return;
  
      PyErr_Fetch(&exception, &value, &tb);
      if (Py_FlushLine())
          PyErr_Clear();
      fflush(stdout);
      if (value == NULL || value == Py_None)
          goto done;
      if (PyExceptionInstance_Check(value)) {
          /* The error code should be in the `code' attribute. */
          PyObject *code = PyObject_GetAttrString(value, "code");
          if (code) {
              Py_DECREF(value);
              value = code;
              if (value == Py_None)
                  goto done;
          }
          /* If we failed to dig out the 'code' attribute,
             just let the else clause below print the error. */
      }
      if (PyInt_Check(value) || PyLong_Check(value))
          exitcode = (int)PyInt_AsLong(value);
      else {
          PyObject *sys_stderr = PySys_GetObject("stderr");
          if (sys_stderr != NULL && sys_stderr != Py_None) {
              PyFile_WriteObject(value, sys_stderr, Py_PRINT_RAW);
          } else {
              PyObject_Print(value, stderr, Py_PRINT_RAW);
              fflush(stderr);
          }
          PySys_WriteStderr("\n");
          exitcode = 1;
      }
   done:
      /* Restore and clear the exception info, in order to properly decref
       * the exception, value, and traceback.      If we just exit instead,
       * these leak, which confuses PYTHONDUMPREFS output, and may prevent
       * some finalizers from running.
       */
      PyErr_Restore(exception, value, tb);
      PyErr_Clear();
      Py_Exit(exitcode);
      /* NOTREACHED */
  }
  
  void
  PyErr_PrintEx(int set_sys_last_vars)
  {
      PyObject *exception, *v, *tb, *hook;
  
      if (PyErr_ExceptionMatches(PyExc_SystemExit)) {
          handle_system_exit();
      }
      PyErr_Fetch(&exception, &v, &tb);
      if (exception == NULL)
          return;
      PyErr_NormalizeException(&exception, &v, &tb);
      if (exception == NULL)
          return;
      /* Now we know v != NULL too */
      if (set_sys_last_vars) {
          PySys_SetObject("last_type", exception);
          PySys_SetObject("last_value", v);
          PySys_SetObject("last_traceback", tb);
      }
      hook = PySys_GetObject("excepthook");
      if (hook && hook != Py_None) {
          PyObject *args = PyTuple_Pack(3,
              exception, v, tb ? tb : Py_None);
          PyObject *result = PyEval_CallObject(hook, args);
          if (result == NULL) {
              PyObject *exception2, *v2, *tb2;
              if (PyErr_ExceptionMatches(PyExc_SystemExit)) {
                  handle_system_exit();
              }
              PyErr_Fetch(&exception2, &v2, &tb2);
              PyErr_NormalizeException(&exception2, &v2, &tb2);
              /* It should not be possible for exception2 or v2
                 to be NULL. However PyErr_Display() can't
                 tolerate NULLs, so just be safe. */
              if (exception2 == NULL) {
                  exception2 = Py_None;
                  Py_INCREF(exception2);
              }
              if (v2 == NULL) {
                  v2 = Py_None;
                  Py_INCREF(v2);
              }
              if (Py_FlushLine())
                  PyErr_Clear();
              fflush(stdout);
              PySys_WriteStderr("Error in sys.excepthook:\n");
              PyErr_Display(exception2, v2, tb2);
              PySys_WriteStderr("\nOriginal exception was:\n");
              PyErr_Display(exception, v, tb);
              Py_DECREF(exception2);
              Py_DECREF(v2);
              Py_XDECREF(tb2);
          }
          Py_XDECREF(result);
          Py_XDECREF(args);
      } else {
          PySys_WriteStderr("sys.excepthook is missing\n");
          PyErr_Display(exception, v, tb);
      }
      Py_XDECREF(exception);
      Py_XDECREF(v);
      Py_XDECREF(tb);
  }
  
  void
  PyErr_Display(PyObject *exception, PyObject *value, PyObject *tb)
  {
      int err = 0;
      PyObject *f = PySys_GetObject("stderr");
      Py_INCREF(value);
      if (f == NULL || f == Py_None)
          fprintf(stderr, "lost sys.stderr\n");
      else {
          if (Py_FlushLine())
              PyErr_Clear();
          fflush(stdout);
          if (tb && tb != Py_None)
              err = PyTraceBack_Print(tb, f);
          if (err == 0 &&
              PyObject_HasAttrString(value, "print_file_and_line"))
          {
              PyObject *message;
              const char *filename, *text;
              int lineno, offset;
              if (!parse_syntax_error(value, &message, &filename,
                                      &lineno, &offset, &text))
                  PyErr_Clear();
              else {
                  char buf[10];
                  PyFile_WriteString("  File \"", f);
                  if (filename == NULL)
                      PyFile_WriteString("<string>", f);
                  else
                      PyFile_WriteString(filename, f);
                  PyFile_WriteString("\", line ", f);
                  PyOS_snprintf(buf, sizeof(buf), "%d", lineno);
                  PyFile_WriteString(buf, f);
                  PyFile_WriteString("\n", f);
                  if (text != NULL)
                      print_error_text(f, offset, text);
                  Py_DECREF(value);
                  value = message;
                  /* Can't be bothered to check all those
                     PyFile_WriteString() calls */
                  if (PyErr_Occurred())
                      err = -1;
              }
          }
          if (err) {
              /* Don't do anything else */
          }
          else if (PyExceptionClass_Check(exception)) {
              PyObject* moduleName;
              char* className = PyExceptionClass_Name(exception);
              if (className != NULL) {
                  char *dot = strrchr(className, '.');
                  if (dot != NULL)
                      className = dot+1;
              }
  
              moduleName = PyObject_GetAttrString(exception, "__module__");
              if (moduleName == NULL)
                  err = PyFile_WriteString("<unknown>", f);
              else {
                  char* modstr = PyString_AsString(moduleName);
                  if (modstr && strcmp(modstr, "exceptions"))
                  {
                      err = PyFile_WriteString(modstr, f);
                      err += PyFile_WriteString(".", f);
                  }
                  Py_DECREF(moduleName);
              }
              if (err == 0) {
                  if (className == NULL)
                        err = PyFile_WriteString("<unknown>", f);
                  else
                        err = PyFile_WriteString(className, f);
              }
          }
          else
              err = PyFile_WriteObject(exception, f, Py_PRINT_RAW);
          if (err == 0 && (value != Py_None)) {
              PyObject *s = PyObject_Str(value);
              /* only print colon if the str() of the
                 object is not the empty string
              */
              if (s == NULL) {
                  PyErr_Clear();
                  err = -1;
                  PyFile_WriteString(": <exception str() failed>", f);
              }
              else if (!PyString_Check(s) ||
                       PyString_GET_SIZE(s) != 0)
                  err = PyFile_WriteString(": ", f);
              if (err == 0)
                err = PyFile_WriteObject(s, f, Py_PRINT_RAW);
              Py_XDECREF(s);
          }
          /* try to write a newline in any case */
          if (err < 0) {
              PyErr_Clear();
          }
          err += PyFile_WriteString("\n", f);
      }
      Py_DECREF(value);
      /* If an error happened here, don't show it.
         XXX This is wrong, but too many callers rely on this behavior. */
      if (err != 0)
          PyErr_Clear();
  }
  
  PyObject *
  PyRun_StringFlags(const char *str, int start, PyObject *globals,
                    PyObject *locals, PyCompilerFlags *flags)
  {
      PyObject *ret = NULL;
      mod_ty mod;
      PyArena *arena = PyArena_New();
      if (arena == NULL)
          return NULL;
  
      mod = PyParser_ASTFromString(str, "<string>", start, flags, arena);
      if (mod != NULL)
          ret = run_mod(mod, "<string>", globals, locals, flags, arena);
      PyArena_Free(arena);
      return ret;
  }
  
  PyObject *
  PyRun_FileExFlags(FILE *fp, const char *filename, int start, PyObject *globals,
                    PyObject *locals, int closeit, PyCompilerFlags *flags)
  {
      PyObject *ret;
      mod_ty mod;
      PyArena *arena = PyArena_New();
      if (arena == NULL)
          return NULL;
  
      mod = PyParser_ASTFromFile(fp, filename, start, 0, 0,
                                 flags, NULL, arena);
      if (closeit)
          fclose(fp);
      if (mod == NULL) {
          PyArena_Free(arena);
          return NULL;
      }
      ret = run_mod(mod, filename, globals, locals, flags, arena);
      PyArena_Free(arena);
      return ret;
  }
  
  static PyObject *
  run_mod(mod_ty mod, const char *filename, PyObject *globals, PyObject *locals,
           PyCompilerFlags *flags, PyArena *arena)
  {
      PyCodeObject *co;
      PyObject *v;
      co = PyAST_Compile(mod, filename, flags, arena);
      if (co == NULL)
          return NULL;
      v = PyEval_EvalCode(co, globals, locals);
      Py_DECREF(co);
      return v;
  }
  
  static PyObject *
  run_pyc_file(FILE *fp, const char *filename, PyObject *globals,
               PyObject *locals, PyCompilerFlags *flags)
  {
      PyCodeObject *co;
      PyObject *v;
      long magic;
      long PyImport_GetMagicNumber(void);
  
      magic = PyMarshal_ReadLongFromFile(fp);
      if (magic != PyImport_GetMagicNumber()) {
          PyErr_SetString(PyExc_RuntimeError,
                     "Bad magic number in .pyc file");
          return NULL;
      }
      (void) PyMarshal_ReadLongFromFile(fp);
      v = PyMarshal_ReadLastObjectFromFile(fp);
      fclose(fp);
      if (v == NULL || !PyCode_Check(v)) {
          Py_XDECREF(v);
          PyErr_SetString(PyExc_RuntimeError,
                     "Bad code object in .pyc file");
          return NULL;
      }
      co = (PyCodeObject *)v;
      v = PyEval_EvalCode(co, globals, locals);
      if (v && flags)
          flags->cf_flags |= (co->co_flags & PyCF_MASK);
      Py_DECREF(co);
      return v;
  }
  
  PyObject *
  Py_CompileStringFlags(const char *str, const char *filename, int start,
                        PyCompilerFlags *flags)
  {
      PyCodeObject *co;
      mod_ty mod;
      PyArena *arena = PyArena_New();
      if (arena == NULL)
          return NULL;
  
      mod = PyParser_ASTFromString(str, filename, start, flags, arena);
      if (mod == NULL) {
          PyArena_Free(arena);
          return NULL;
      }
      if (flags && (flags->cf_flags & PyCF_ONLY_AST)) {
          PyObject *result = PyAST_mod2obj(mod);
          PyArena_Free(arena);
          return result;
      }
      co = PyAST_Compile(mod, filename, flags, arena);
      PyArena_Free(arena);
      return (PyObject *)co;
  }
  
  struct symtable *
  Py_SymtableString(const char *str, const char *filename, int start)
  {
      struct symtable *st;
      mod_ty mod;
      PyCompilerFlags flags;
      PyArena *arena = PyArena_New();
      if (arena == NULL)
          return NULL;
  
      flags.cf_flags = 0;
  
      mod = PyParser_ASTFromString(str, filename, start, &flags, arena);
      if (mod == NULL) {
          PyArena_Free(arena);
          return NULL;
      }
      st = PySymtable_Build(mod, filename, 0);
      PyArena_Free(arena);
      return st;
  }
  
  /* Preferred access to parser is through AST. */
  mod_ty
  PyParser_ASTFromString(const char *s, const char *filename, int start,
                         PyCompilerFlags *flags, PyArena *arena)
  {
      mod_ty mod;
      PyCompilerFlags localflags;
      perrdetail err;
      int iflags = PARSER_FLAGS(flags);
  
      node *n = PyParser_ParseStringFlagsFilenameEx(s, filename,
                                      &_PyParser_Grammar, start, &err,
                                      &iflags);
      if (flags == NULL) {
          localflags.cf_flags = 0;
          flags = &localflags;
      }
      if (n) {
          flags->cf_flags |= iflags & PyCF_MASK;
          mod = PyAST_FromNode(n, flags, filename, arena);
          PyNode_Free(n);
          return mod;
      }
      else {
          err_input(&err);
          return NULL;
      }
  }
  
  mod_ty
  PyParser_ASTFromFile(FILE *fp, const char *filename, int start, char *ps1,
                       char *ps2, PyCompilerFlags *flags, int *errcode,
                       PyArena *arena)
  {
      mod_ty mod;
      PyCompilerFlags localflags;
      perrdetail err;
      int iflags = PARSER_FLAGS(flags);
  
      node *n = PyParser_ParseFileFlagsEx(fp, filename, &_PyParser_Grammar,
                              start, ps1, ps2, &err, &iflags);
      if (flags == NULL) {
          localflags.cf_flags = 0;
          flags = &localflags;
      }
      if (n) {
          flags->cf_flags |= iflags & PyCF_MASK;
          mod = PyAST_FromNode(n, flags, filename, arena);
          PyNode_Free(n);
          return mod;
      }
      else {
          err_input(&err);
          if (errcode)
              *errcode = err.error;
          return NULL;
      }
  }
  
  /* Simplified interface to parsefile -- return node or set exception */
  
  node *
  PyParser_SimpleParseFileFlags(FILE *fp, const char *filename, int start, int flags)
  {
      perrdetail err;
      node *n = PyParser_ParseFileFlags(fp, filename, &_PyParser_Grammar,
                                        start, NULL, NULL, &err, flags);
      if (n == NULL)
          err_input(&err);
  
      return n;
  }
  
  /* Simplified interface to parsestring -- return node or set exception */
  
  node *
  PyParser_SimpleParseStringFlags(const char *str, int start, int flags)
  {
      perrdetail err;
      node *n = PyParser_ParseStringFlags(str, &_PyParser_Grammar,
                                          start, &err, flags);
      if (n == NULL)
          err_input(&err);
      return n;
  }
  
  node *
  PyParser_SimpleParseStringFlagsFilename(const char *str, const char *filename,
                                          int start, int flags)
  {
      perrdetail err;
      node *n = PyParser_ParseStringFlagsFilename(str, filename,
                              &_PyParser_Grammar, start, &err, flags);
      if (n == NULL)
          err_input(&err);
      return n;
  }
  
  node *
  PyParser_SimpleParseStringFilename(const char *str, const char *filename, int start)
  {
      return PyParser_SimpleParseStringFlagsFilename(str, filename, start, 0);
  }
  
  /* May want to move a more generalized form of this to parsetok.c or
     even parser modules. */
  
  void
  PyParser_SetError(perrdetail *err)
  {
      err_input(err);
  }
  
  /* Set the error appropriate to the given input error code (see errcode.h) */
  
  static void
  err_input(perrdetail *err)
  {
      PyObject *v, *w, *errtype;
      PyObject* u = NULL;
      char *msg = NULL;
      errtype = PyExc_SyntaxError;
      switch (err->error) {
      case E_ERROR:
          return;
      case E_SYNTAX:
          errtype = PyExc_IndentationError;
          if (err->expected == INDENT)
              msg = "expected an indented block";
          else if (err->token == INDENT)
              msg = "unexpected indent";
          else if (err->token == DEDENT)
              msg = "unexpected unindent";
          else {
              errtype = PyExc_SyntaxError;
              msg = "invalid syntax";
          }
          break;
      case E_TOKEN:
          msg = "invalid token";
          break;
      case E_EOFS:
          msg = "EOF while scanning triple-quoted string literal";
          break;
      case E_EOLS:
          msg = "EOL while scanning string literal";
          break;
      case E_INTR:
          if (!PyErr_Occurred())
              PyErr_SetNone(PyExc_KeyboardInterrupt);
          goto cleanup;
      case E_NOMEM:
          PyErr_NoMemory();
          goto cleanup;
      case E_EOF:
          msg = "unexpected EOF while parsing";
          break;
      case E_TABSPACE:
          errtype = PyExc_TabError;
          msg = "inconsistent use of tabs and spaces in indentation";
          break;
      case E_OVERFLOW:
          msg = "expression too long";
          break;
      case E_DEDENT:
          errtype = PyExc_IndentationError;
          msg = "unindent does not match any outer indentation level";
          break;
      case E_TOODEEP:
          errtype = PyExc_IndentationError;
          msg = "too many levels of indentation";
          break;
      case E_DECODE: {
          PyObject *type, *value, *tb;
          PyErr_Fetch(&type, &value, &tb);
          if (value != NULL) {
              u = PyObject_Str(value);
              if (u != NULL) {
                  msg = PyString_AsString(u);
              }
          }
          if (msg == NULL)
              msg = "unknown decode error";
          Py_XDECREF(type);
          Py_XDECREF(value);
          Py_XDECREF(tb);
          break;
      }
      case E_LINECONT:
          msg = "unexpected character after line continuation character";
          break;
      default:
          fprintf(stderr, "error=%d\n", err->error);
          msg = "unknown parsing error";
          break;
      }
      v = Py_BuildValue("(ziiz)", err->filename,
                        err->lineno, err->offset, err->text);
      w = NULL;
      if (v != NULL)
          w = Py_BuildValue("(sO)", msg, v);
      Py_XDECREF(u);
      Py_XDECREF(v);
      PyErr_SetObject(errtype, w);
      Py_XDECREF(w);
  cleanup:
      if (err->text != NULL) {
          PyObject_FREE(err->text);
          err->text = NULL;
      }
  }
  
  /* Print fatal error message and abort */
  
  void
  Py_FatalError(const char *msg)
  {
      fprintf(stderr, "Fatal Python error: %s\n", msg);
      fflush(stderr); /* it helps in Windows debug build */
  
  #ifdef MS_WINDOWS
      {
          size_t len = strlen(msg);
          WCHAR* buffer;
          size_t i;
  
          /* Convert the message to wchar_t. This uses a simple one-to-one
          conversion, assuming that the this error message actually uses ASCII
          only. If this ceases to be true, we will have to convert. */
          buffer = alloca( (len+1) * (sizeof *buffer));
          for( i=0; i<=len; ++i)
              buffer[i] = msg[i];
          OutputDebugStringW(L"Fatal Python error: ");
          OutputDebugStringW(buffer);
          OutputDebugStringW(L"\n");
      }
  #ifdef _DEBUG
      DebugBreak();
  #endif
  #endif /* MS_WINDOWS */
      abort();
  }
  
  /* Clean up and exit */
  
  #ifdef WITH_THREAD
  #include "pythread.h"
  #endif
  
  /* Wait until threading._shutdown completes, provided
     the threading module was imported in the first place.
     The shutdown routine will wait until all non-daemon
     "threading" threads have completed. */
  static void
  wait_for_thread_shutdown(void)
  {
  #ifdef WITH_THREAD
      PyObject *result;
      PyThreadState *tstate = PyThreadState_GET();
      PyObject *threading = PyMapping_GetItemString(tstate->interp->modules,
                                                    "threading");
      if (threading == NULL) {
          /* threading not imported */
          PyErr_Clear();
          return;
      }
      result = PyObject_CallMethod(threading, "_shutdown", "");
      if (result == NULL)
          PyErr_WriteUnraisable(threading);
      else
          Py_DECREF(result);
      Py_DECREF(threading);
  #endif
  }
  
  #define NEXITFUNCS 32
  static void (*exitfuncs[NEXITFUNCS])(void);
  static int nexitfuncs = 0;
  
  int Py_AtExit(void (*func)(void))
  {
      if (nexitfuncs >= NEXITFUNCS)
          return -1;
      exitfuncs[nexitfuncs++] = func;
      return 0;
  }
  
  static void
  call_sys_exitfunc(void)
  {
      PyObject *exitfunc = PySys_GetObject("exitfunc");
  
      if (exitfunc) {
          PyObject *res;
          Py_INCREF(exitfunc);
          PySys_SetObject("exitfunc", (PyObject *)NULL);
          res = PyEval_CallObject(exitfunc, (PyObject *)NULL);
          if (res == NULL) {
              if (!PyErr_ExceptionMatches(PyExc_SystemExit)) {
                  PySys_WriteStderr("Error in sys.exitfunc:\n");
              }
              PyErr_Print();
          }
          Py_DECREF(exitfunc);
      }
  
      if (Py_FlushLine())
          PyErr_Clear();
  }
  
  static void
  call_ll_exitfuncs(void)
  {
      while (nexitfuncs > 0)
          (*exitfuncs[--nexitfuncs])();
  
      fflush(stdout);
      fflush(stderr);
  }
  
  void
  Py_Exit(int sts)
  {
      Py_Finalize();
  
      exit(sts);
  }
  
  static void
  initsigs(void)
  {
  #ifdef SIGPIPE
      PyOS_setsig(SIGPIPE, SIG_IGN);
  #endif
  #ifdef SIGXFZ
      PyOS_setsig(SIGXFZ, SIG_IGN);
  #endif
  #ifdef SIGXFSZ
      PyOS_setsig(SIGXFSZ, SIG_IGN);
  #endif
      PyOS_InitInterrupts(); /* May imply initsignal() */
  }
  
  
  /*
   * The file descriptor fd is considered ``interactive'' if either
   *   a) isatty(fd) is TRUE, or
   *   b) the -i flag was given, and the filename associated with
   *      the descriptor is NULL or "<stdin>" or "???".
   */
  int
  Py_FdIsInteractive(FILE *fp, const char *filename)
  {
      if (isatty((int)fileno(fp)))
          return 1;
      if (!Py_InteractiveFlag)
          return 0;
      return (filename == NULL) ||
             (strcmp(filename, "<stdin>") == 0) ||
             (strcmp(filename, "???") == 0);
  }
  
  
  #if defined(USE_STACKCHECK)
  #if defined(WIN32) && defined(_MSC_VER)
  
  /* Stack checking for Microsoft C */
  
  #include <malloc.h>
  #include <excpt.h>
  
  /*
   * Return non-zero when we run out of memory on the stack; zero otherwise.
   */
  int
  PyOS_CheckStack(void)
  {
      __try {
          /* alloca throws a stack overflow exception if there's
             not enough space left on the stack */
          alloca(PYOS_STACK_MARGIN * sizeof(void*));
          return 0;
      } __except (GetExceptionCode() == STATUS_STACK_OVERFLOW ?
                      EXCEPTION_EXECUTE_HANDLER :
              EXCEPTION_CONTINUE_SEARCH) {
          int errcode = _resetstkoflw();
          if (errcode == 0)
          {
              Py_FatalError("Could not reset the stack!");
          }
      }
      return 1;
  }
  
  #endif /* WIN32 && _MSC_VER */
  
  /* Alternate implementations can be added here... */
  
  #endif /* USE_STACKCHECK */
  
  
  /* Wrappers around sigaction() or signal(). */
  
  PyOS_sighandler_t
  PyOS_getsig(int sig)
  {
  #ifdef HAVE_SIGACTION
      struct sigaction context;
      if (sigaction(sig, NULL, &context) == -1)
          return SIG_ERR;
      return context.sa_handler;
  #else
      PyOS_sighandler_t handler;
  /* Special signal handling for the secure CRT in Visual Studio 2005 */
  #if defined(_MSC_VER) && _MSC_VER >= 1400
      switch (sig) {
      /* Only these signals are valid */
      case SIGINT:
      case SIGILL:
      case SIGFPE:
      case SIGSEGV:
      case SIGTERM:
      case SIGBREAK:
      case SIGABRT:
          break;
      /* Don't call signal() with other values or it will assert */
      default:
          return SIG_ERR;
      }
  #endif /* _MSC_VER && _MSC_VER >= 1400 */
      handler = signal(sig, SIG_IGN);
      if (handler != SIG_ERR)
          signal(sig, handler);
      return handler;
  #endif
  }
  
  PyOS_sighandler_t
  PyOS_setsig(int sig, PyOS_sighandler_t handler)
  {
  #ifdef HAVE_SIGACTION
      /* Some code in Modules/signalmodule.c depends on sigaction() being
       * used here if HAVE_SIGACTION is defined.  Fix that if this code
       * changes to invalidate that assumption.
       */
      struct sigaction context, ocontext;
      context.sa_handler = handler;
      sigemptyset(&context.sa_mask);
      context.sa_flags = 0;
      if (sigaction(sig, &context, &ocontext) == -1)
          return SIG_ERR;
      return ocontext.sa_handler;
  #else
      PyOS_sighandler_t oldhandler;
      oldhandler = signal(sig, handler);
  #ifdef HAVE_SIGINTERRUPT
      siginterrupt(sig, 1);
  #endif
      return oldhandler;
  #endif
  }
  
  /* Deprecated C API functions still provided for binary compatibility */
  
  #undef PyParser_SimpleParseFile
  PyAPI_FUNC(node *)
  PyParser_SimpleParseFile(FILE *fp, const char *filename, int start)
  {
      return PyParser_SimpleParseFileFlags(fp, filename, start, 0);
  }
  
  #undef PyParser_SimpleParseString
  PyAPI_FUNC(node *)
  PyParser_SimpleParseString(const char *str, int start)
  {
      return PyParser_SimpleParseStringFlags(str, start, 0);
  }
  
  #undef PyRun_AnyFile
  PyAPI_FUNC(int)
  PyRun_AnyFile(FILE *fp, const char *name)
  {
      return PyRun_AnyFileExFlags(fp, name, 0, NULL);
  }
  
  #undef PyRun_AnyFileEx
  PyAPI_FUNC(int)
  PyRun_AnyFileEx(FILE *fp, const char *name, int closeit)
  {
      return PyRun_AnyFileExFlags(fp, name, closeit, NULL);
  }
  
  #undef PyRun_AnyFileFlags
  PyAPI_FUNC(int)
  PyRun_AnyFileFlags(FILE *fp, const char *name, PyCompilerFlags *flags)
  {
      return PyRun_AnyFileExFlags(fp, name, 0, flags);
  }
  
  #undef PyRun_File
  PyAPI_FUNC(PyObject *)
  PyRun_File(FILE *fp, const char *p, int s, PyObject *g, PyObject *l)
  {
      return PyRun_FileExFlags(fp, p, s, g, l, 0, NULL);
  }
  
  #undef PyRun_FileEx
  PyAPI_FUNC(PyObject *)
  PyRun_FileEx(FILE *fp, const char *p, int s, PyObject *g, PyObject *l, int c)
  {
      return PyRun_FileExFlags(fp, p, s, g, l, c, NULL);
  }
  
  #undef PyRun_FileFlags
  PyAPI_FUNC(PyObject *)
  PyRun_FileFlags(FILE *fp, const char *p, int s, PyObject *g, PyObject *l,
                  PyCompilerFlags *flags)
  {
      return PyRun_FileExFlags(fp, p, s, g, l, 0, flags);
  }
  
  #undef PyRun_SimpleFile
  PyAPI_FUNC(int)
  PyRun_SimpleFile(FILE *f, const char *p)
  {
      return PyRun_SimpleFileExFlags(f, p, 0, NULL);
  }
  
  #undef PyRun_SimpleFileEx
  PyAPI_FUNC(int)
  PyRun_SimpleFileEx(FILE *f, const char *p, int c)
  {
      return PyRun_SimpleFileExFlags(f, p, c, NULL);
  }
  
  
  #undef PyRun_String
  PyAPI_FUNC(PyObject *)
  PyRun_String(const char *str, int s, PyObject *g, PyObject *l)
  {
      return PyRun_StringFlags(str, s, g, l, NULL);
  }
  
  #undef PyRun_SimpleString
  PyAPI_FUNC(int)
  PyRun_SimpleString(const char *s)
  {
      return PyRun_SimpleStringFlags(s, NULL);
  }
  
  #undef Py_CompileString
  PyAPI_FUNC(PyObject *)
  Py_CompileString(const char *str, const char *p, int s)
  {
      return Py_CompileStringFlags(str, p, s, NULL);
  }
  
  #undef PyRun_InteractiveOne
  PyAPI_FUNC(int)
  PyRun_InteractiveOne(FILE *f, const char *p)
  {
      return PyRun_InteractiveOneFlags(f, p, NULL);
  }
  
  #undef PyRun_InteractiveLoop
  PyAPI_FUNC(int)
  PyRun_InteractiveLoop(FILE *f, const char *p)
  {
      return PyRun_InteractiveLoopFlags(f, p, NULL);
  }
  
  #ifdef __cplusplus
  }
  #endif
  
  