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yap-6.3/packages/python/python.c
2017-08-21 12:36:48 +01:00

224 lines
7.2 KiB
C

#include "py4yap.h"
#include <VFS.h>
#include "YapStreams.h"
atom_t ATOM_true, ATOM_false, ATOM_colon, ATOM_dot, ATOM_none, ATOM_t,
ATOM_comma, ATOM_builtin, ATOM_A, ATOM_V, ATOM_self, ATOM_nil,
ATOM_brackets, ATOM_curly_brackets;
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, FUNCTOR_brackets1;
X_API PyObject *py_Builtin;
X_API PyObject *py_Yapex;
X_API PyObject *py_Sys;
PyObject *py_Context;
PyObject *py_ModDict;
VFS_t pystream;
static void *py_open(const char *name, const char *io_mode) {
#if HAVE_STRCASESTR
if (strcasestr(name, "//python/") == name)
name += strlen("//python/");
#else
if (strstr(name, "//python/") == name)
name += strlen("//python/");
#endif
// we assume object is already open, so there is no need to open it.
PyObject *stream = string_to_python(name, true, NULL);
if (stream == Py_None)
return NULL;
Py_INCREF(stream);
return stream;
}
static bool py_close(int sno) {
StreamDesc *s = YAP_GetStreamFromId(sno);
PyObject *fclose = PyObject_GetAttrString(s->u.private_data, "close");
PyObject *rc = PyObject_CallObject(fclose, NULL);
bool v = (rc == Py_True);
return v;
}
static int py_put(int sno, int ch) {
PyObject *pyw; // buffer
//int pyw_kind;
//PyObject *pyw_data;
char s[2];
StreamDesc *st = YAP_GetStreamFromId(sno);
// PyUnicode_WRITE(pyw_kind, pyw_data, 0, ch);
PyObject *fput = PyObject_GetAttrString(st->u.private_data, "write");
s[0] = ch;
s[1] = '\0';
PyObject_CallFunctionObjArgs(fput, PyBytes_FromString(s), NULL);
return ch;
}
static int py_get(int sno) {
StreamDesc *s = YAP_GetStreamFromId(sno);
PyObject *fget = PyObject_GetAttrString(s->u.private_data, "read");
PyObject *pyr = PyObject_CallFunctionObjArgs(fget, PyLong_FromLong(1), NULL);
return PyUnicode_READ_CHAR(pyr, 0);
}
static int64_t py_seek(int sno, int64_t where, int how) {
StreamDesc *s = YAP_GetStreamFromId(sno);
PyObject *fseek = PyObject_GetAttrString(s->u.private_data, "seek");
PyObject *pyr = PyObject_CallFunctionObjArgs(fseek, PyLong_FromLong(where),
PyLong_FromLong(how), NULL);
return PyLong_AsLong(pyr);
}
static void py_flush(int sno) {
StreamDesc *s = YAP_GetStreamFromId(sno);
PyObject *flush = PyObject_GetAttrString(s->u.private_data, "flush");
PyObject_CallFunction(flush, NULL);
}
#if 0
static void python_output(void) {
PyObject *stream = string_to_python("sys.stdout", true, NULL);
StreamDesc *st = YAP_GetStreamFromId(1);
st->u.private_data = stream;
st->vfs = &pystream;
stream = string_to_python("sys.stderr", true, NULL);
st = YAP_GetStreamFromIds(2);
st->u.private_data = stream;
st->vfs = &pystream;
}
#endif
static bool init_python_stream(void) {
//pyw = PyUnicode_FromString("x");
//pyw_kind = PyUnicode_KIND(pyw);
//pyw_data = PyUnicode_DATA(pyw);
pystream.name = "python stream";
pystream.vflags =
VFS_CAN_WRITE | VFS_CAN_EXEC | VFS_CAN_SEEK | VFS_HAS_PREFIX;
pystream.prefix = "//python/";
pystream.suffix = NULL;
pystream.open = py_open;
pystream.close = py_close;
pystream.get_char = py_get;
pystream.put_char = py_put;
pystream.flush = py_flush;
pystream.seek = py_seek;
pystream.next = GLOBAL_VFS;
GLOBAL_VFS = &pystream;
// NULL;
return true;
}
X_API PyObject *Py_f2p;
extern X_API bool python_in_python;
static void add_modules(void) {
py_Main = PyImport_AddModule("__main__");
Py_INCREF(py_Main);
py_Sys = PyImport_AddModule("sys");
Py_INCREF(py_Sys);
py_Builtin = PyImport_AddModule("__builtin__");
Py_INCREF(py_Builtin);
py_ModDict = PyObject_GetAttrString(py_Sys, "modules");
// py_Yapex = PyImport_ImportModule("yap4py.yapi");
// PyObject *py_Yap =
py_Yapex = PyImport_AddModule("yap4py.yapi");
if (py_Yapex)
Py_INCREF(py_Yapex);
Py_f2p = PythonLookup("f2p", NULL);
if (Py_f2p)
Py_INCREF(Py_f2p);
init_python_stream();
}
static void install_py_constants(void) {
FUNCTOR_dot2 = PL_new_functor(PL_new_atom("."), 2);
// FUNCTOR_equal2 = PL_new_functor(PL_new_atom("="), 2);
// FUNCTOR_boolop1 = PL_new_functor(PL_new_atom("@"), 1);
ATOM_A = PL_new_atom("A");
ATOM_V = PL_new_atom("V");
ATOM_builtin = PL_new_atom("__builtin__");
ATOM_comma = PL_new_atom(",");
ATOM_colon = PL_new_atom(":");
ATOM_true = PL_new_atom("true");
ATOM_false = PL_new_atom("false");
ATOM_dot = PL_new_atom(".");
ATOM_self = PL_new_atom("self");
ATOM_nil = PL_new_atom("[]");
ATOM_brackets = PL_new_atom("()");
ATOM_curly_brackets = PL_new_atom("{}");
FUNCTOR_abs1 = PL_new_functor(PL_new_atom("abs"), 1);
FUNCTOR_all1 = PL_new_functor(PL_new_atom("all"), 1);
FUNCTOR_any1 = PL_new_functor(PL_new_atom("any"), 1);
FUNCTOR_bin1 = PL_new_functor(PL_new_atom("bin"), 1);
FUNCTOR_ord1 = PL_new_functor(PL_new_atom("ord"), 1);
FUNCTOR_int1 = PL_new_functor(PL_new_atom("int"), 1);
FUNCTOR_long1 = PL_new_functor(PL_new_atom("long"), 1);
FUNCTOR_float1 = PL_new_functor(PL_new_atom("float"), 1);
FUNCTOR_curly1 = PL_new_functor(PL_new_atom("{}"), 1);
FUNCTOR_brackets1 = PL_new_functor(PL_new_atom("()"), 1);
FUNCTOR_dollar1 = PL_new_functor(PL_new_atom("$"), 1);
FUNCTOR_pointer1 = PL_new_functor(PL_new_atom("__obj__"), 1);
FUNCTOR_dir1 = PL_new_functor(PL_new_atom("dir"), 1);
FUNCTOR_iter1 = PL_new_functor(PL_new_atom("iter"), 1);
FUNCTOR_iter2 = PL_new_functor(PL_new_atom("iter"), 2);
FUNCTOR_len1 = PL_new_functor(PL_new_atom("len"), 1);
FUNCTOR_range1 = PL_new_functor(PL_new_atom("range"), 1);
FUNCTOR_range2 = PL_new_functor(PL_new_atom("range"), 2);
FUNCTOR_range3 = PL_new_functor(PL_new_atom("range"), 3);
FUNCTOR_sum1 = PL_new_functor(PL_new_atom("sum"), 1);
FUNCTOR_complex2 = PL_new_functor(PL_new_atom("i"), 2);
FUNCTOR_plus2 = PL_new_functor(PL_new_atom("+"), 2);
FUNCTOR_sub2 = PL_new_functor(PL_new_atom("-"), 2);
FUNCTOR_mul2 = PL_new_functor(PL_new_atom("*"), 2);
FUNCTOR_div2 = PL_new_functor(PL_new_atom("/"), 2);
FUNCTOR_hat2 = PL_new_functor(PL_new_atom("^"), 2);
FUNCTOR_colon2 = PL_new_functor(PL_new_atom(":"), 2);
FUNCTOR_comma2 = PL_new_functor(PL_new_atom(","), 2);
FUNCTOR_equal2 = PL_new_functor(PL_new_atom("="), 2);
FUNCTOR_sqbrackets2 = PL_new_functor(PL_new_atom("[]"), 2);
}
foreign_t end_python(void) {
if (!python_in_python)
Py_Finalize();
return true;
}
static bool libpython_initialized = 0;
X_API bool do_init_python(void) {
// char **argv;
if (libpython_initialized)
return true;
libpython_initialized = true;
// PyGILState_STATE gstate = PyGILState_Ensure();
term_t t = PL_new_term_ref();
if (!python_in_python)
Py_Initialize();
install_py_constants();
PL_reset_term_refs(t);
install_pl2pl();
// PyGILState_Release(gstate);
add_modules();
// python_output();
return true;
}