ben
/
mwparserfromhell
zrcadlo https://github.com/earwig/mwparserfromhell
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Committing this C work for now.

tags/v0.2
Ben Kurtovic před 12 roky
rodič
03120bc97e
revize
e0660f8bc3
4 změnil soubory, kde provedl 357 přidání a 3 odebrání
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  1. +3
    -2
      docs/conf.py
  2. +24
    -0
      mwparserfromhell/parser/builder.c
  3. +322
    -0
      mwparserfromhell/parser/tokenizer.c
  4. +8
    -1
      setup.py

+ 3
- 2
docs/conf.py Zobrazit soubor

@@ -17,6 +17,7 @@ import sys, os
# add these directories to sys.path here. If the directory is relative to the
# documentation root, use os.path.abspath to make it absolute, like shown here.
sys.path.insert(0, os.path.abspath('..'))
import mwparserfromhell

# -- General configuration -----------------------------------------------------

@@ -48,9 +49,9 @@ copyright = u'2012 Ben Kurtovic'
# built documents.
#
# The short X.Y version.
version = '0.2'
version = ".".join(mwparserfromhell.__version__.split(".", 2)[:2])
# The full version, including alpha/beta/rc tags.
release = '0.2.dev'
release = mwparserfromhell.__version__

# The language for content autogenerated by Sphinx. Refer to documentation
# for a list of supported languages.


+ 24
- 0
mwparserfromhell/parser/builder.c Zobrazit soubor

@@ -0,0 +1,24 @@
/*
Builder for MWParserFromHell
Copyright (C) 2012 Ben Kurtovic <ben.kurtovic@verizon.net>

Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal in
the Software without restriction, including without limitation the rights to
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
of the Software, and to permit persons to whom the Software is furnished to do
so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
*/

#include <Python.h>

+ 322
- 0
mwparserfromhell/parser/tokenizer.c Zobrazit soubor

@@ -0,0 +1,322 @@
/*
Tokenizer for MWParserFromHell
Copyright (C) 2012 Ben Kurtovic <ben.kurtovic@verizon.net>

Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal in
the Software without restriction, including without limitation the rights to
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
of the Software, and to permit persons to whom the Software is furnished to do
so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
*/

#ifndef PY_SSIZE_T_CLEAN
#define PY_SSIZE_T_CLEAN
#endif

#include <Python.h>
#include "structmember.h"

static const Py_UNICODE* OUT_OF_BOUNDS = "";
static const Py_UNICODE* MARKERS[] = {"{", "}", "[", "]", "<", ">", "|", "=",
"&", "#", "*", ";", ":", "/", "-", "!",
"\n", OUT_OF_BOUNDS};

static PyMethodDef
module_methods[] = {
{NULL}
};

typedef struct {
PyObject_HEAD
PyObject* text; /* text to tokenize */
PyObject* stacks; /* token stacks */
PyObject* topstack; /* topmost stack */
Py_ssize_t head; /* current position in text */
Py_ssize_t length; /* length of text */
Py_ssize_t global; /* global context */
} Tokenizer;

static PyObject*
Tokenizer_new(PyTypeObject* type, PyObject* args, PyObject* kwds)
{
Tokenizer *self;

self = (Tokenizer*) type->tp_alloc(type, 0);
if (self != NULL) {

self->text = Py_None;
Py_INCREF(Py_None);

self->stacks = PyList_New(0);
if (self->stacks == NULL) {
Py_DECREF(self);
return NULL;
}

self->head = 0;
self->length = 0;
self->global = 0;
}

return (PyObject*) self;
}

static void
Tokenizer_dealloc(Tokenizer* self)
{
Py_XDECREF(self->text);
Py_XDECREF(self->stacks);
Py_XDECREF(self->topstack);
self->ob_type->tp_free((PyObject*) self);
}

static int
Tokenizer_init(Tokenizer* self, PyObject* args, PyObject* kwds)
{
static char* kwlist[] = {NULL};
if (!PyArg_ParseTupleAndKeywords(args, kwds, "", kwlist))
return -1;
return 0;
}

#define Tokenizer_STACK(self) PyList_GET_ITEM(self->topstack, 0)
#define Tokenizer_CONTEXT(self) PyList_GET_ITEM(self->topstack, 1)
#define Tokenizer_TEXTBUFFER(self) PyList_GET_ITEM(self->topstack, 2)

static int
Tokenizer_set_context(Tokenizer* self, Py_ssize_t value)
{
if (PyList_SetItem(self->topstack, 1, PyInt_FromSsize_t(value)))
return -1;
return 0;
}

static int
Tokenizer_set_textbuffer(Tokenizer* self, PyObject* value)
{
if (PyList_SetItem(self->topstack, 2, value))
return -1;
return 0;
}

/*
Add a new token stack, context, and textbuffer to the list.
*/
static int
Tokenizer_push(Tokenizer* self, int context)
{
PyObject* top = PyList_New(3);
PyList_SET_ITEM(top, 0, PyList_New(0));
PyList_SET_ITEM(top, 1, PyInt_FromSsize_t(0));
PyList_SET_ITEM(top, 2, PyList_New(0));

Py_XDECREF(self->topstack);
self->topstack = top;

if (PyList_Append(self->stacks, top))
return -1;
return 0;
}

/*
Push the textbuffer onto the stack as a Text node and clear it.
*/
static int
Tokenizer_push_textbuffer(Tokenizer* self)
{
if (PyList_GET_SIZE(Tokenizer_TEXTBUFFER(self)) > 0) {

PyObject* text;
// tokens.Text(text="".join(self._textbuffer))

if (PyList_Append(Tokenizer_STACK(self), text)
return -1;

if (Tokenizer_set_textbuffer(self, PyList_New(0)))
return -1;

return 0;
}
}

/*
Pop the current stack/context/textbuffer, returing the stack.
*/
static PyObject*
Tokenizer_pop(Tokenizer* self)
{
if (Tokenizer_push_textbuffer(self))
return NULL;

self->stacks // POP!?
}

/*
Pop the current stack/context/textbuffer, returing the stack. We will also
replace the underlying stack's context with the current stack's.
*/
static PyObject*
Tokenizer_pop_keeping_context(Tokenizer* self)
{
if (Tokenizer_push_textbuffer(self))
return NULL;
}

/*
Read the value at a relative point in the wikicode.
*/
static Py_UNICODE*
Tokenizer_read(Tokenizer* self, Py_ssize_t delta)
{
Py_ssize_t index = self->head + delta;

if (index >= self->length) {
return OUT_OF_BOUNDS;
}

PyObject* item = PySequence_Fast_GET_ITEM(self->text, index);
return PyUnicode_AS_UNICODE(item);
}

/*
Parse the wikicode string, using *context* for when to stop.
*/
static PyObject*
Tokenizer_parse(Tokenizer* self, int context)
{
Py_UNICODE* this;

Tokenizer_push(self, context);

while (1) {
this = Tokenizer_read(self, 0);
if (this not in MARKERS) {
WRITE TEXT
}
if (this == OUT_OF_BOUNDS) {
return Tokenizer_push(self);
}
printf("%p %i %c\n", this, *this, *this);
self->head++;
}
}

/*
Build a list of tokens from a string of wikicode and return it.
*/
static PyObject*
Tokenizer_tokenize(Tokenizer* self, PyObject *args)
{
PyObject* text;

if (!PyArg_ParseTuple(args, "U", &text)) {
/* Failed to parse a Unicode object; try a string instead. */
PyErr_Clear();
const char* encoded;
Py_ssize_t size;

if (!PyArg_ParseTuple(args, "s#", &encoded, &size)) {
return NULL;
}

PyObject* temp;
temp = PyUnicode_FromStringAndSize(encoded, size);
if (text == NULL)
return NULL;

Py_XDECREF(self->text);
text = PySequence_Fast(temp, "expected a sequence");
Py_XDECREF(temp);
self->text = text;
}
else {
Py_XDECREF(self->text);
self->text = PySequence_Fast(text, "expected a sequence");
}

self->length = PySequence_Length(self->text);

return Tokenizer_parse(self, 0);
}

static PyMethodDef
Tokenizer_methods[] = {
{"tokenize", (PyCFunction) Tokenizer_tokenize, METH_VARARGS,
"Build a list of tokens from a string of wikicode and return it."},
{NULL}
};

static PyMemberDef
Tokenizer_members[] = {
{NULL}
};

static PyTypeObject
TokenizerType = {
PyObject_HEAD_INIT(NULL)
0, /* ob_size */
"_tokenizer.CTokenizer", /* tp_name */
sizeof(Tokenizer), /* tp_basicsize */
0, /* tp_itemsize */
(destructor) Tokenizer_dealloc, /* tp_dealloc */
0, /* tp_print */
0, /* tp_getattr */
0, /* tp_setattr */
0, /* tp_compare */
0, /* tp_repr */
0, /* tp_as_number */
0, /* tp_as_sequence */
0, /* tp_as_mapping */
0, /* tp_hash */
0, /* tp_call */
0, /* tp_str */
0, /* tp_getattro */
0, /* tp_setattro */
0, /* tp_as_buffer */
Py_TPFLAGS_DEFAULT, /* tp_flags */
"Creates a list of tokens from a string of wikicode.", /* tp_doc */
0, /* tp_traverse */
0, /* tp_clear */
0, /* tp_richcompare */
0, /* tp_weaklistoffset */
0, /* tp_iter */
0, /* tp_iternext */
Tokenizer_methods, /* tp_methods */
Tokenizer_members, /* tp_members */
0, /* tp_getset */
0, /* tp_base */
0, /* tp_dict */
0, /* tp_descr_get */
0, /* tp_descr_set */
0, /* tp_dictoffset */
(initproc) Tokenizer_init, /* tp_init */
0, /* tp_alloc */
Tokenizer_new, /* tp_new */
};

PyMODINIT_FUNC
init_tokenizer(void)
{
PyObject* module;

TokenizerType.tp_new = PyType_GenericNew;
if (PyType_Ready(&TokenizerType) < 0)
return;

module = Py_InitModule("_tokenizer", module_methods);

Py_INCREF(&TokenizerType);
PyModule_AddObject(module, "CTokenizer", (PyObject*) &TokenizerType);
}

+ 8
- 1
setup.py Zobrazit soubor

@@ -21,16 +21,23 @@
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.

from setuptools import setup, find_packages
from setuptools import setup, find_packages, Extension

from mwparserfromhell import __version__

with open("README.rst") as fp:
long_docs = fp.read()

builder = Extension("mwparserfromhell.parser._builder",
sources = ["mwparserfromhell/parser/builder.c"])

tokenizer = Extension("mwparserfromhell.parser._tokenizer",
sources = ["mwparserfromhell/parser/tokenizer.c"])

setup(
name = "mwparserfromhell",
packages = find_packages(exclude=("tests",)),
ext_modules = [builder, tokenizer],
test_suite = "tests",
version = __version__,
author = "Ben Kurtovic",


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