mirror of
https://github.com/jart/cosmopolitan.git
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9b29358511
Status lines for Emacs and Vim have been added to Python sources so they'll be easier to edit using Python's preferred coding style. Some DNS helper functions have been broken up into multiple files. It's nice to have one function per file whenever possible, since that way we don't need -ffunction-sections. Another reason it's good to have small source files, is because the build will be enforcing resource limits on compilation and testing soon.
413 lines
13 KiB
C
413 lines
13 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:4;tab-width:8;coding:utf-8 -*-│
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│vi: set net ft=c ts=4 sts=4 sw=4 fenc=utf-8 :vi│
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Python 3 │
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│ https://docs.python.org/3/license.html │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "third_party/python/Include/dictobject.h"
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#include "third_party/python/Include/listobject.h"
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#include "third_party/python/Include/longobject.h"
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#include "third_party/python/Include/methodobject.h"
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#include "third_party/python/Include/modsupport.h"
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#include "third_party/python/Include/object.h"
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#include "third_party/python/Include/objimpl.h"
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/* clang-format off */
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/* Use this file as a template to start implementing a module that
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also declares object types. All occurrences of 'Xxo' should be changed
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to something reasonable for your objects. After that, all other
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occurrences of 'xx' should be changed to something reasonable for your
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module. If your module is named foo your sourcefile should be named
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foomodule.c.
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You will probably want to delete all references to 'x_attr' and add
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your own types of attributes instead. Maybe you want to name your
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local variables other than 'self'. If your object type is needed in
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other files, you'll have to create a file "foobarobject.h"; see
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floatobject.h for an example. */
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/* Xxo objects */
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static PyObject *ErrorObject;
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typedef struct {
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PyObject_HEAD
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PyObject *x_attr; /* Attributes dictionary */
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} XxoObject;
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static PyTypeObject Xxo_Type;
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#define XxoObject_Check(v) (Py_TYPE(v) == &Xxo_Type)
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static XxoObject *
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newXxoObject(PyObject *arg)
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{
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XxoObject *self;
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self = PyObject_New(XxoObject, &Xxo_Type);
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if (self == NULL)
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return NULL;
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self->x_attr = NULL;
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return self;
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}
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/* Xxo methods */
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static void
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Xxo_dealloc(XxoObject *self)
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{
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Py_XDECREF(self->x_attr);
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PyObject_Del(self);
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}
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static PyObject *
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Xxo_demo(XxoObject *self, PyObject *args)
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{
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if (!PyArg_ParseTuple(args, ":demo"))
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return NULL;
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Py_INCREF(Py_None);
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return Py_None;
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}
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static PyMethodDef Xxo_methods[] = {
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{"demo", (PyCFunction)Xxo_demo, METH_VARARGS,
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PyDoc_STR("demo() -> None")},
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{NULL, NULL} /* sentinel */
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};
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static PyObject *
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Xxo_getattro(XxoObject *self, PyObject *name)
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{
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if (self->x_attr != NULL) {
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PyObject *v = PyDict_GetItem(self->x_attr, name);
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if (v != NULL) {
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Py_INCREF(v);
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return v;
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}
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}
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return PyObject_GenericGetAttr((PyObject *)self, name);
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}
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static int
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Xxo_setattr(XxoObject *self, const char *name, PyObject *v)
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{
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if (self->x_attr == NULL) {
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self->x_attr = PyDict_New();
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if (self->x_attr == NULL)
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return -1;
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}
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if (v == NULL) {
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int rv = PyDict_DelItemString(self->x_attr, name);
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if (rv < 0)
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PyErr_SetString(PyExc_AttributeError,
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"delete non-existing Xxo attribute");
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return rv;
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}
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else
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return PyDict_SetItemString(self->x_attr, name, v);
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}
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static PyTypeObject Xxo_Type = {
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/* The ob_type field must be initialized in the module init function
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* to be portable to Windows without using C++. */
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PyVarObject_HEAD_INIT(NULL, 0)
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"xxmodule.Xxo", /*tp_name*/
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sizeof(XxoObject), /*tp_basicsize*/
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0, /*tp_itemsize*/
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/* methods */
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(destructor)Xxo_dealloc, /*tp_dealloc*/
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0, /*tp_print*/
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(getattrfunc)0, /*tp_getattr*/
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(setattrfunc)Xxo_setattr, /*tp_setattr*/
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0, /*tp_reserved*/
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0, /*tp_repr*/
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0, /*tp_as_number*/
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0, /*tp_as_sequence*/
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0, /*tp_as_mapping*/
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0, /*tp_hash*/
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0, /*tp_call*/
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0, /*tp_str*/
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(getattrofunc)Xxo_getattro, /*tp_getattro*/
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0, /*tp_setattro*/
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0, /*tp_as_buffer*/
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Py_TPFLAGS_DEFAULT, /*tp_flags*/
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0, /*tp_doc*/
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0, /*tp_traverse*/
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0, /*tp_clear*/
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0, /*tp_richcompare*/
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0, /*tp_weaklistoffset*/
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0, /*tp_iter*/
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0, /*tp_iternext*/
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Xxo_methods, /*tp_methods*/
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0, /*tp_members*/
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0, /*tp_getset*/
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0, /*tp_base*/
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0, /*tp_dict*/
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0, /*tp_descr_get*/
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0, /*tp_descr_set*/
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0, /*tp_dictoffset*/
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0, /*tp_init*/
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0, /*tp_alloc*/
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0, /*tp_new*/
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0, /*tp_free*/
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0, /*tp_is_gc*/
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};
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/* --------------------------------------------------------------------- */
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/* Function of two integers returning integer */
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PyDoc_STRVAR(xx_foo_doc,
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"foo(i,j)\n\
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\n\
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Return the sum of i and j.");
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static PyObject *
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xx_foo(PyObject *self, PyObject *args)
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{
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long i, j;
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long res;
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if (!PyArg_ParseTuple(args, "ll:foo", &i, &j))
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return NULL;
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res = i+j; /* XXX Do something here */
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return PyLong_FromLong(res);
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}
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/* Function of no arguments returning new Xxo object */
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static PyObject *
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xx_new(PyObject *self, PyObject *args)
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{
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XxoObject *rv;
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if (!PyArg_ParseTuple(args, ":new"))
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return NULL;
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rv = newXxoObject(args);
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if (rv == NULL)
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return NULL;
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return (PyObject *)rv;
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}
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/* Example with subtle bug from extensions manual ("Thin Ice"). */
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static PyObject *
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xx_bug(PyObject *self, PyObject *args)
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{
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PyObject *list, *item;
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if (!PyArg_ParseTuple(args, "O:bug", &list))
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return NULL;
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item = PyList_GetItem(list, 0);
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/* Py_INCREF(item); */
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PyList_SetItem(list, 1, PyLong_FromLong(0L));
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PyObject_Print(item, stdout, 0);
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printf("\n");
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/* Py_DECREF(item); */
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Py_INCREF(Py_None);
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return Py_None;
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}
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/* Test bad format character */
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static PyObject *
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xx_roj(PyObject *self, PyObject *args)
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{
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PyObject *a;
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long b;
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if (!PyArg_ParseTuple(args, "O#:roj", &a, &b))
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return NULL;
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Py_INCREF(Py_None);
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return Py_None;
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}
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/* ---------- */
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static PyTypeObject Str_Type = {
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/* The ob_type field must be initialized in the module init function
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* to be portable to Windows without using C++. */
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PyVarObject_HEAD_INIT(NULL, 0)
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"xxmodule.Str", /*tp_name*/
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0, /*tp_basicsize*/
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0, /*tp_itemsize*/
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/* methods */
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0, /*tp_dealloc*/
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0, /*tp_print*/
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0, /*tp_getattr*/
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0, /*tp_setattr*/
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0, /*tp_reserved*/
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0, /*tp_repr*/
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0, /*tp_as_number*/
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0, /*tp_as_sequence*/
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0, /*tp_as_mapping*/
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0, /*tp_hash*/
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0, /*tp_call*/
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0, /*tp_str*/
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0, /*tp_getattro*/
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0, /*tp_setattro*/
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0, /*tp_as_buffer*/
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Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE, /*tp_flags*/
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0, /*tp_doc*/
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0, /*tp_traverse*/
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0, /*tp_clear*/
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0, /*tp_richcompare*/
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0, /*tp_weaklistoffset*/
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0, /*tp_iter*/
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0, /*tp_iternext*/
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0, /*tp_methods*/
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0, /*tp_members*/
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0, /*tp_getset*/
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0, /* see PyInit_xx */ /*tp_base*/
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0, /*tp_dict*/
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0, /*tp_descr_get*/
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0, /*tp_descr_set*/
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0, /*tp_dictoffset*/
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0, /*tp_init*/
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0, /*tp_alloc*/
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0, /*tp_new*/
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0, /*tp_free*/
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0, /*tp_is_gc*/
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};
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/* ---------- */
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static PyObject *
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null_richcompare(PyObject *self, PyObject *other, int op)
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{
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Py_INCREF(Py_NotImplemented);
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return Py_NotImplemented;
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}
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static PyTypeObject Null_Type = {
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/* The ob_type field must be initialized in the module init function
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* to be portable to Windows without using C++. */
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PyVarObject_HEAD_INIT(NULL, 0)
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"xxmodule.Null", /*tp_name*/
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0, /*tp_basicsize*/
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0, /*tp_itemsize*/
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/* methods */
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0, /*tp_dealloc*/
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0, /*tp_print*/
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0, /*tp_getattr*/
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0, /*tp_setattr*/
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0, /*tp_reserved*/
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0, /*tp_repr*/
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0, /*tp_as_number*/
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0, /*tp_as_sequence*/
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0, /*tp_as_mapping*/
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0, /*tp_hash*/
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0, /*tp_call*/
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0, /*tp_str*/
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0, /*tp_getattro*/
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0, /*tp_setattro*/
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0, /*tp_as_buffer*/
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Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE, /*tp_flags*/
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0, /*tp_doc*/
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0, /*tp_traverse*/
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0, /*tp_clear*/
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null_richcompare, /*tp_richcompare*/
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0, /*tp_weaklistoffset*/
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0, /*tp_iter*/
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0, /*tp_iternext*/
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0, /*tp_methods*/
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0, /*tp_members*/
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0, /*tp_getset*/
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0, /* see PyInit_xx */ /*tp_base*/
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0, /*tp_dict*/
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0, /*tp_descr_get*/
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0, /*tp_descr_set*/
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0, /*tp_dictoffset*/
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0, /*tp_init*/
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0, /*tp_alloc*/
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0, /* see PyInit_xx */ /*tp_new*/
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0, /*tp_free*/
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0, /*tp_is_gc*/
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};
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/* ---------- */
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/* List of functions defined in the module */
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static PyMethodDef xx_methods[] = {
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{"roj", xx_roj, METH_VARARGS,
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PyDoc_STR("roj(a,b) -> None")},
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{"foo", xx_foo, METH_VARARGS,
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xx_foo_doc},
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{"new", xx_new, METH_VARARGS,
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PyDoc_STR("new() -> new Xx object")},
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{"bug", xx_bug, METH_VARARGS,
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PyDoc_STR("bug(o) -> None")},
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{NULL, NULL} /* sentinel */
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};
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PyDoc_STRVAR(module_doc,
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"This is a template module just for instruction.");
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static int
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xx_exec(PyObject *m)
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{
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/* Due to cross platform compiler issues the slots must be filled
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* here. It's required for portability to Windows without requiring
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* C++. */
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Null_Type.tp_base = &PyBaseObject_Type;
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Null_Type.tp_new = PyType_GenericNew;
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Str_Type.tp_base = &PyUnicode_Type;
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/* Finalize the type object including setting type of the new type
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* object; doing it here is required for portability, too. */
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if (PyType_Ready(&Xxo_Type) < 0)
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goto fail;
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/* Add some symbolic constants to the module */
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if (ErrorObject == NULL) {
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ErrorObject = PyErr_NewException("xx.error", NULL, NULL);
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if (ErrorObject == NULL)
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goto fail;
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}
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Py_INCREF(ErrorObject);
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PyModule_AddObject(m, "error", ErrorObject);
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/* Add Str */
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if (PyType_Ready(&Str_Type) < 0)
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goto fail;
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PyModule_AddObject(m, "Str", (PyObject *)&Str_Type);
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/* Add Null */
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if (PyType_Ready(&Null_Type) < 0)
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goto fail;
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PyModule_AddObject(m, "Null", (PyObject *)&Null_Type);
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return 0;
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fail:
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Py_XDECREF(m);
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return -1;
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}
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static struct PyModuleDef_Slot xx_slots[] = {
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{Py_mod_exec, xx_exec},
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{0, NULL},
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};
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static struct PyModuleDef xxmodule = {
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PyModuleDef_HEAD_INIT,
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"xx",
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module_doc,
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0,
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xx_methods,
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xx_slots,
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NULL,
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NULL,
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NULL
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};
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/* Export function for the module (*must* be called PyInit_xx) */
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PyMODINIT_FUNC
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PyInit_xx(void)
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{
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return PyModuleDef_Init(&xxmodule);
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}
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