yap-6.3/packages/python/python.h

//@{

/** @brief  Prolog to Python library
*
*
* Please look at python.pl for more information, and to real.pl and real.c
* for related work.
*/

#ifdef _XOPEN_SOURCE
#undef _XOPEN_SOURCE // python does its own thing
#endif

#include <Python.h>
#include <SWI-Prolog.h>
#ifdef HAVE_STAT
#undef HAVE_STATa
#endif
#include <assert.h>
#include <string.h>
#define EXTRA_MESSSAGES 1

#ifndef PYTHON_H
#define PYTHON_H 1

PyObject *find_obj(PyObject *ob, term_t lhs, bool eval);

#if DEBUG_MEMORY
#define DebugPrintf(s, op) fprintf(stderr, "%s:%d: " s, __FILE__, __LINE__, op)
#else
#define DebugPrintf(s, op)
#endif

/**
 *  @brief A module is store as an objet plus a list of paths.
 */
#define PY_MAX_MODLEN 16
typedef struct s_mod_t {
  PyObject *mod;
  int length;
  YAP_Term names[PY_MAX_MODLEN];
} Py_mod;

extern X_API YAP_Term pythonToYAP(PyObject *pVal);
extern X_API PyObject *yap_to_python(YAP_Term t, bool eval, PyObject *o);

typedef YAP_Arity arity_t;

extern atom_t ATOM_true, ATOM_false, ATOM_colon, ATOM_dot, ATOM_none, ATOM_t,
    ATOM_comma, ATOM_builtin, ATOM_V, ATOM_A, ATOM_self;

extern functor_t FUNCTOR_dollar1, FUNCTOR_abs1, FUNCTOR_all1, FUNCTOR_any1,
    FUNCTOR_bin1, FUNCTOR_brackets1, FUNCTOR_comma2, FUNCTOR_dir1,
    FUNCTOR_float1, FUNCTOR_int1, FUNCTOR_iter1, FUNCTOR_iter2, FUNCTOR_long1,
    FUNCTOR_len1, FUNCTOR_curly1, FUNCTOR_ord1, FUNCTOR_range1, FUNCTOR_range2,
    FUNCTOR_range3, FUNCTOR_sum1, FUNCTOR_pointer1, FUNCTOR_complex2,
    FUNCTOR_plus2, FUNCTOR_sub2, FUNCTOR_mul2, FUNCTOR_div2, FUNCTOR_hat2,
    FUNCTOR_colon2, FUNCTOR_comma2, FUNCTOR_equal2, FUNCTOR_sqbrackets2,
    FUNCTOR_dot2;

extern X_API PyObject *py_Main;
extern X_API PyObject *py_Builtin;
extern X_API PyObject *py_Yapex;
extern X_API PyObject *py_Local;
extern X_API PyObject *py_Global;
extern X_API PyObject *py_Context;
extern PyObject *py_F2P;
extern PyObject *py_Sys;
extern PyObject *py_ModDict;

extern bool python_in_python;

extern bool python_release_GIL(term_t state);
extern term_t python_acquire_GIL(void);

static inline Py_ssize_t get_p_int(PyObject *o, Py_ssize_t def) {
  if (o == NULL)
    return def;
  if (PyLong_Check(o)) {
    return PyLong_AsLong(o);
#if PY_MAJOR_VERSION < 3
  } else if (PyInt_Check(o)) {
    return PyInt_AsLong(o);
#endif
  }
  return def;
}

static inline foreign_t address_to_term(PyObject *pVal, term_t t) {
  term_t to = PL_new_term_ref(), t1 = PL_new_term_ref();
  PL_put_pointer(t1, (void *)pVal);
  PL_cons_functor(to, FUNCTOR_pointer1, t1);
  Py_INCREF(pVal);
  foreign_t rc = PL_unify(t, to);
  PL_reset_term_refs(to);
  return rc;
}

static inline int proper_ascii_string(const char *s) {
  unsigned char c;

  while ((c = *s++)) {
    if (c > 127)
      return FALSE;
  }
  return TRUE;
}

static inline PyObject *atom_to_python_string(term_t t) {
  // Yap_DebugPlWrite(YAP_GetFromSlot(t));        fprintf(stderr, " here I
  // am\n");
  char *s = NULL;
  if (!PL_get_atom_chars(t, &s))
    return NULL;
/* return __main__,s */
#if PY_MAJOR_VERSION < 3
  if (proper_ascii_string(s)) {
    return PyString_FromStringAndSize(s, strlen(s));
  } else
#endif
  {
    PyObject *pobj = PyUnicode_DecodeUTF8(s, strlen(s), NULL);
    // fprintf(stderr, "%s\n", s);
    return pobj;
  }
}

#define CHECK_CALL(rc, t, call)			\
      PyErr_Clear();\
      rc = call; \
      if (rc == NULL || PyErr_Occurred()) {\
      YE(t,__LINE__,__FILE__,__FUNCTION__);\
        PyErr_Print(); PyErr_Clear();\
        }
      
#define CHECKNULL(t,rc) (rc  != NULL ? rc : YE(t,__LINE__,__FILE__,__FUNCTION__) )
#define AOK(rc, err)  { if (!rc)  YEM( #rc ,__LINE__,__FILE__,__FUNCTION__); }


extern PyObject *YE(term_t t, int line, const char *file, const char *code);
extern void YEM( const char *ex, int line, const char *file, const char *code);
extern void pyErrorHandler__(int line, const char *file, const char *code);

#define pyErrorHandler()                                                       \
  {                                                                            \
    if (PyErr_Occurred()) {                                                    \
      pyErrorHandler__(__LINE__, __FILE__, __FUNCTION__);                      \
    }                                                                          \
  }

#define pyErrorAndReturn(x, y)                                                 \
  {                                                                            \
    if (PyErr_Occurred()) {                                                    \
      pyErrorHandler__(__LINE__, __FILE__, __FUNCTION__);                      \
      return (x);                                                              \
    } else {                                                                   \
      return (x);                                                              \
    }                                                                          \
  }
// #define pyErrorAndReturn( x, y ) return x

extern PyObject *compound_to_pyeval(term_t t, PyObject *context);
extern PyObject *compound_to_pytree(term_t t, PyObject *context);

extern PyObject *term_to_python(term_t t, bool eval, PyObject *contextxs);

extern PyObject *term_to_nametuple(const char *s, int arity, term_t t);

extern foreign_t python_to_term(PyObject *pVal, term_t t);
extern bool python_assign(term_t t, PyObject *exp, PyObject *context);
extern foreign_t assign_to_symbol(term_t t, PyObject *e);

extern bool python_asign(term_t t, PyObject *exp, PyObject *context);

extern foreign_t python_builtin(term_t out);

extern int lookupPyModule(Py_mod *q);
extern PyObject *lookupPySymbol(const char *s, PyObject *q, PyObject **d);

extern install_t install_pypreds(void);
extern install_t install_pl2pl(void);

X_API extern bool init_python(void);
extern bool do_init_python(void);

extern PyObject PyInit_yap(void);

extern PyObject *PythonLookup(const char *s, PyObject *o);

extern PyObject *PythonLookupSpecial(const char *s);

#endif