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CWE-ou-minkata/MOULOpenSourceClientPlugin/Plasma20/Sources/Plasma/FeatureLib/pfPython/pyGlueHelpers.h

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/*==LICENSE==*
CyanWorlds.com Engine - MMOG client, server and tools
Copyright (C) 2011 Cyan Worlds, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
You can contact Cyan Worlds, Inc. by email legal@cyan.com
or by snail mail at:
Cyan Worlds, Inc.
14617 N Newport Hwy
Mead, WA 99021
*==LICENSE==*/
#ifndef _pyGlueHelpers_h_
#define _pyGlueHelpers_h_
// A set of macros to take at least some of the tediousness out of creating straight python glue code
/////////////////////////////////////////////////////////////////////
// Python class definition macros
/////////////////////////////////////////////////////////////////////
// This defines the basic PyObject we need for python classes
#define PYTHON_CLASS_DEFINITION(pythonClassName, glueClassName) \
struct pythonClassName \
{ \
PyObject_HEAD \
glueClassName *fThis; \
}
// This makes sure that our python new function can access our constructors
#define PYTHON_CLASS_NEW_FRIEND(pythonClassName) friend PyObject *pythonClassName##_new(PyTypeObject *type, PyObject *args, PyObject *keywords)
// This defines the basic new function for a class
#define PYTHON_CLASS_NEW_DEFINITION static PyObject *New()
#define PYTHON_CLASS_NEW_IMPL(pythonClassName, glueClassName) \
PyObject *glueClassName::New() \
{ \
pythonClassName *newObj = (pythonClassName*)pythonClassName##_type.tp_new(&pythonClassName##_type, NULL, NULL); \
return (PyObject*)newObj; \
}
// This defines the basic check function for a class
#define PYTHON_CLASS_CHECK_DEFINITION static bool Check(PyObject *obj)
#define PYTHON_CLASS_CHECK_IMPL(pythonClassName, glueClassName) \
bool glueClassName::Check(PyObject *obj) \
{ \
return PyObject_TypeCheck(obj, &pythonClassName##_type); \
}
// This defines the basic convert from function for a class
#define PYTHON_CLASS_CONVERT_FROM_DEFINITION(glueClassName) static glueClassName *ConvertFrom(PyObject *obj)
#define PYTHON_CLASS_CONVERT_FROM_IMPL(pythonClassName, glueClassName) \
glueClassName *glueClassName::ConvertFrom(PyObject *obj) \
{ \
if (!Check(obj)) \
{ \
PyErr_SetString(PyExc_TypeError, "object is not a " #pythonClassName); \
return NULL; \
} \
return ((pythonClassName*)obj)->fThis; \
}
/////////////////////////////////////////////////////////////////////
// Python type definition macros
/////////////////////////////////////////////////////////////////////
// This starts off the type definition (however most of the data still needs to be filled in by hand
#define PYTHON_TYPE_START(pythonClassName) \
static PyTypeObject pythonClassName##_type = { \
PyObject_HEAD_INIT(NULL)
// and easy terminator to make things look pretty
#define PYTHON_TYPE_END }
// the default new function definition
#define PYTHON_DEFAULT_NEW_DEFINITION(pythonClassName, glueClassName) \
PyObject *pythonClassName##_new(PyTypeObject *type, PyObject *, PyObject *) \
{ \
pythonClassName *self; \
self = (pythonClassName*)type->tp_alloc(type, 0); \
if (self != NULL) \
{ \
self->fThis = TRACKED_NEW glueClassName(); \
if (self->fThis == NULL) \
{ \
Py_DECREF(self); \
return NULL; \
} \
} \
\
return (PyObject*)self; \
}
#define PYTHON_DEFAULT_NEW(pythonClassName) pythonClassName##_new
// the default dealloc function definition
#define PYTHON_DEFAULT_DEALLOC_DEFINITION(pythonClassName) \
void pythonClassName##_dealloc(pythonClassName *self) \
{ \
delete self->fThis; \
self->ob_type->tp_free((PyObject*)self); \
}
#define PYTHON_DEFAULT_DEALLOC(pythonClassName) (destructor)pythonClassName##_dealloc
// init function defines
#define PYTHON_RETURN_INIT_ERROR return -1;
#define PYTHON_RETURN_INIT_OK return 0;
// basic no init function stuff, for when you don't want the class to be created by python
#define PYTHON_NO_INIT_DEFINITION(pythonClassName) \
int pythonClassName##___init__(pythonClassName *, PyObject *, PyObject *) \
{ \
PyErr_SetString(PyExc_RuntimeError, "Cannot create " #pythonClassName " objects from Python"); \
PYTHON_RETURN_INIT_ERROR; \
}
#define PYTHON_INIT_DEFINITION(pythonClassName, argsVar, keywordsVar) \
int pythonClassName##___init__(pythonClassName *self, PyObject *args, PyObject *keywords)
#define PYTHON_DEFAULT_INIT(pythonClassName) (initproc)pythonClassName##___init__
// message table default name
#define PYTHON_DEFAULT_METHODS_TABLE(pythonClassName) pythonClassName##_methods
// most glue classes can get away with this default structure
#define PLASMA_DEFAULT_TYPE(pythonClassName, docString) \
PYTHON_TYPE_START(pythonClassName) \
0, /* ob_size */ \
"Plasma." #pythonClassName, /* tp_name */ \
sizeof(pythonClassName), /* tp_basicsize */ \
0, /* tp_itemsize */ \
PYTHON_DEFAULT_DEALLOC(pythonClassName), /* 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 | Py_TPFLAGS_BASETYPE, /* tp_flags */ \
docString, /* tp_doc */ \
0, /* tp_traverse */ \
0, /* tp_clear */ \
0, /* tp_richcompare */ \
0, /* tp_weaklistoffset */ \
0, /* tp_iter */ \
0, /* tp_iternext */ \
PYTHON_DEFAULT_METHODS_TABLE(pythonClassName), /* tp_methods */ \
0, /* tp_members */ \
0, /* tp_getset */ \
0, /* tp_base */ \
0, /* tp_dict */ \
0, /* tp_descr_get */ \
0, /* tp_descr_set */ \
0, /* tp_dictoffset */ \
PYTHON_DEFAULT_INIT(pythonClassName), /* tp_init */ \
0, /* tp_alloc */ \
PYTHON_DEFAULT_NEW(pythonClassName),/* tp_new */ \
PYTHON_TYPE_END
// default compare/rich compare function name
#define PYTHON_DEFAULT_COMPARE(pythonClassName) pythonClassName##_compare
#define PYTHON_NO_COMPARE 0
#define PYTHON_DEFAULT_RICH_COMPARE(pythonClassName) pythonClassName##_richCompare
#define PYTHON_NO_RICH_COMPARE 0
// default as_ table names
#define PYTHON_DEFAULT_AS_NUMBER(pythonClassName) &pythonClassName##_as_number
#define PYTHON_NO_AS_NUMBER 0
#define PYTHON_DEFAULT_AS_SEQUENCE(pythonClassName) &pythonClassName##_as_sequence
#define PYTHON_NO_AS_SEQUENCE 0
#define PYTHON_DEFAULT_AS_MAPPING(pythonClassName) &pythonClassName##_as_mapping
#define PYTHON_NO_AS_MAPPING 0
// str function
#define PYTHON_DEFAULT_STR(pythonClassName) (reprfunc)pythonClassName##_str
#define PYTHON_NO_STR 0
// get/set table default name
#define PYTHON_DEFAULT_GETSET(pythonClassName) pythonClassName##_getseters
#define PYTHON_NO_GETSET 0
// default base pointer
#define PYTHON_DEFAULT_BASE_TYPE(glueBaseClass) glueBaseClass::type_ptr
#define PYTHON_NO_BASE 0
// for glue functions that need custom stuff, you need to define the macros yourself
#define PLASMA_CUSTOM_TYPE(pythonClassName, docString) \
PYTHON_TYPE_START(pythonClassName) \
0, /* ob_size */ \
"Plasma." #pythonClassName, /* tp_name */ \
sizeof(pythonClassName), /* tp_basicsize */ \
0, /* tp_itemsize */ \
PYTHON_DEFAULT_DEALLOC(pythonClassName), /* tp_dealloc */ \
0, /* tp_print */ \
0, /* tp_getattr */ \
0, /* tp_setattr */ \
pythonClassName##_COMPARE, /* tp_compare */ \
0, /* tp_repr */ \
pythonClassName##_AS_NUMBER, /* tp_as_number */ \
pythonClassName##_AS_SEQUENCE, /* tp_as_sequence */ \
pythonClassName##_AS_MAPPING, /* tp_as_mapping */ \
0, /* tp_hash */ \
0, /* tp_call */ \
pythonClassName##_STR, /* tp_str */ \
0, /* tp_getattro */ \
0, /* tp_setattro */ \
0, /* tp_as_buffer */ \
Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE, /* tp_flags */ \
docString, /* tp_doc */ \
0, /* tp_traverse */ \
0, /* tp_clear */ \
pythonClassName##_RICH_COMPARE, /* tp_richcompare */ \
0, /* tp_weaklistoffset */ \
0, /* tp_iter */ \
0, /* tp_iternext */ \
PYTHON_DEFAULT_METHODS_TABLE(pythonClassName), /* tp_methods */ \
0, /* tp_members */ \
pythonClassName##_GETSET, /* tp_getset */ \
pythonClassName##_BASE, /* tp_base */ \
0, /* tp_dict */ \
0, /* tp_descr_get */ \
0, /* tp_descr_set */ \
0, /* tp_dictoffset */ \
PYTHON_DEFAULT_INIT(pythonClassName), /* tp_init */ \
0, /* tp_alloc */ \
PYTHON_DEFAULT_NEW(pythonClassName),/* tp_new */ \
PYTHON_TYPE_END
// for conviencence when we just need a base class
#define PLASMA_DEFAULT_TYPE_WBASE(pythonClassName, glueBaseClass, docString) \
PYTHON_TYPE_START(pythonClassName) \
0, /* ob_size */ \
"Plasma." #pythonClassName, /* tp_name */ \
sizeof(pythonClassName), /* tp_basicsize */ \
0, /* tp_itemsize */ \
PYTHON_DEFAULT_DEALLOC(pythonClassName), /* 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 | Py_TPFLAGS_BASETYPE, /* tp_flags */ \
docString, /* tp_doc */ \
0, /* tp_traverse */ \
0, /* tp_clear */ \
0, /* tp_richcompare */ \
0, /* tp_weaklistoffset */ \
0, /* tp_iter */ \
0, /* tp_iternext */ \
PYTHON_DEFAULT_METHODS_TABLE(pythonClassName), /* tp_methods */ \
0, /* tp_members */ \
0, /* tp_getset */ \
glueBaseClass::type_ptr, /* tp_base */ \
0, /* tp_dict */ \
0, /* tp_descr_get */ \
0, /* tp_descr_set */ \
0, /* tp_dictoffset */ \
PYTHON_DEFAULT_INIT(pythonClassName), /* tp_init */ \
0, /* tp_alloc */ \
PYTHON_DEFAULT_NEW(pythonClassName),/* tp_new */ \
PYTHON_TYPE_END
// small macros so that the type object can be accessed outside the glue file (for subclassing)
#define PYTHON_EXPOSE_TYPE static PyTypeObject* type_ptr
#define PYTHON_EXPOSE_TYPE_DEFINITION(pythonClass, glueClass) PyTypeObject* glueClass::type_ptr = &pythonClass##_type
/////////////////////////////////////////////////////////////////////
// Python class import macros
/////////////////////////////////////////////////////////////////////
// called at the beginning of the class definition function to grab the module
#define PYTHON_CLASS_IMPORT_START(m) \
if (m == NULL) \
return; \
\
Py_INCREF(m)
// called at the end of the class definition function to release the module
#define PYTHON_CLASS_IMPORT_END(m) Py_DECREF(m)
// called for each class you want to add to the module
#define PYTHON_CLASS_IMPORT(m, pythonClassName) \
if (PyType_Ready(&pythonClassName##_type) < 0) \
return; \
\
Py_INCREF(&pythonClassName##_type); \
PyModule_AddObject(m, #pythonClassName, (PyObject*)&pythonClassName##_type)
/////////////////////////////////////////////////////////////////////
// Python method macros
/////////////////////////////////////////////////////////////////////
// Handles the three types of methods python uses
#define PYTHON_METHOD_DEFINITION(pythonClassName, methodName, argsVar) \
static PyObject *pythonClassName##_##methodName(pythonClassName *self, PyObject *argsVar)
#define PYTHON_METHOD_DEFINITION_NOARGS(pythonClassName, methodName) \
static PyObject *pythonClassName##_##methodName(pythonClassName *self)
#define PYTHON_METHOD_DEFINITION_WKEY(pythonClassName, methodName, argsVar, keywordsVar) \
static PyObject *pythonClassName##_##methodName(pythonClassName *self, PyObject *argsVar, PyObject *keywordsVar)
// A very basic function, just calls the class method and returns None
#define PYTHON_BASIC_METHOD_DEFINITION(pythonClassName, methodName, classMethodName) \
static PyObject *pythonClassName##_##methodName(pythonClassName *self) \
{ \
self->fThis->classMethodName(); \
PYTHON_RETURN_NONE; \
}
// Different basic return types
#define PYTHON_RETURN_ERROR {return NULL;}
#define PYTHON_RETURN_NONE {Py_INCREF(Py_None); return Py_None;}
#define PYTHON_RETURN_BOOL(testValue) \
{ \
if (testValue) \
return PyInt_FromLong((long)1); \
else \
return PyInt_FromLong((long)0); \
}
#define PYTHON_RETURN_NOT_IMPLEMENTED {Py_INCREF(Py_NotImplemented); return Py_NotImplemented;}
// method table start
#define PYTHON_START_METHODS_TABLE(pythonClassName) static PyMethodDef pythonClassName##_methods[] = {
// method table end (automatically adds sentinal value)
#define PYTHON_END_METHODS_TABLE {NULL} }
// basic method
#define PYTHON_METHOD(pythonClassName, methodName, docString) \
{#methodName, (PyCFunction)pythonClassName##_##methodName, METH_VARARGS, docString}
// method with no arguments
#define PYTHON_METHOD_NOARGS(pythonClassName, methodName, docString) \
{#methodName, (PyCFunction)pythonClassName##_##methodName, METH_NOARGS, docString}
// method with keywords
#define PYTHON_METHOD_WKEY(pythonClassName, methodName, docString) \
{#methodName, (PyCFunction)pythonClassName##_##methodName, METH_VARARGS | METH_KEYWORDS, docString}
// really basic method
#define PYTHON_BASIC_METHOD(pythonClassName, methodName, docString) \
{#methodName, (PyCFunction)pythonClassName##_##methodName, METH_NOARGS, docString}
/////////////////////////////////////////////////////////////////////
// Get/set macros
/////////////////////////////////////////////////////////////////////
// setter defines
#define PYTHON_RETURN_SET_ERROR return -1;
#define PYTHON_RETURN_SET_OK return 0;
// getter function definition
#define PYTHON_GET_DEFINITION(pythonClassName, attribName) \
static PyObject *pythonClassName##_get##attribName(pythonClassName *self, void *closure)
// setter function definition
#define PYTHON_SET_DEFINITION(pythonClassName, attribName, valueVarName) \
static int pythonClassName##_set##attribName(pythonClassName *self, PyObject *valueVarName, void *closure)
// read-only setter function
#define PYTHON_SET_DEFINITION_READONLY(pythonClassName, attribName) \
int pythonClassName##_set##attribName(PyObject *self, PyObject *value, void *closure) \
{ \
PyErr_SetString(PyExc_RuntimeError, #attribName " is read-only"); \
PYTHON_RETURN_SET_ERROR; \
}
// starts off the get/set table
#define PYTHON_START_GETSET_TABLE(pythonClassName) static PyGetSetDef pythonClassName##_getseters[] = {
// and easy terminator to make things look pretty (automatically adds sentinal value)
#define PYTHON_END_GETSET_TABLE {NULL} }
// the get/set definition
#define PYTHON_GETSET(pythonClassName, attribName, docString) {#attribName, \
(getter)pythonClassName##_get##attribName, (setter)pythonClassName##_set##attribName, \
docString, NULL}
/////////////////////////////////////////////////////////////////////
// as_ table macros
/////////////////////////////////////////////////////////////////////
// as_number table
#define PYTHON_START_AS_NUMBER_TABLE(pythonClassName) static PyNumberMethods pythonClassName##_as_number = {
#define PYTHON_END_AS_NUMBER_TABLE }
// as_sequence table
#define PYTHON_START_AS_SEQUENCE_TABLE(pythonClassName) static PySequenceMethods pythonClassName##_as_sequence = {
#define PYTHON_END_AS_SEQUENCE_TABLE }
// as_mapping table
#define PYTHON_START_AS_MAPPING_TABLE(pythonClassName) static PyMappingMethods pythonClassName##_as_mapping = {
#define PYTHON_END_AS_MAPPING_TABLE }
/////////////////////////////////////////////////////////////////////
// Compare/Rich compare functions
/////////////////////////////////////////////////////////////////////
// compare
#define PYTHON_COMPARE_DEFINITION(pythonClassName, obj1, obj2) int pythonClassName##_compare(PyObject *obj1, PyObject *obj2)
#define PYTHON_COMPARE_LESS_THAN return -1
#define PYTHON_COMPARE_GREATER_THAN return 1
#define PYTHON_COMPARE_EQUAL return 0
// rich compare
#define PYTHON_RICH_COMPARE_DEFINITION(pythonClassName, obj1, obj2, compareType) PyObject *pythonClassName##_richCompare(PyObject *obj1, PyObject *obj2, int compareType)
#define PYTHON_RCOMPARE_TRUE return PyInt_FromLong((long)1)
#define PYTHON_RCOMPARE_FALSE return PyInt_FromLong((long)0)
#define PYTHON_RCOMPARE_ERROR return PyInt_FromLong((long)-1)
/////////////////////////////////////////////////////////////////////
// str functions
/////////////////////////////////////////////////////////////////////
// str function
#define PYTHON_STR_DEFINITION(pythonClassName) PyObject *pythonClassName##_str(pythonClassName *self)
/////////////////////////////////////////////////////////////////////
// Global function macros (for those functions that aren't in a class)
/////////////////////////////////////////////////////////////////////
// Global method
#define PYTHON_GLOBAL_METHOD_DEFINITION(methodName, argsVar, docString) \
static PyObject *methodName(PyObject*, PyObject*); /* forward declaration so struct can go here */ \
static PyMethodDef methodName##_method = {#methodName, methodName, METH_VARARGS, docString}; \
static PyObject *methodName(PyObject *self, PyObject *argsVar) /* and now for the actual function */
// Global method with no arguments
#define PYTHON_GLOBAL_METHOD_DEFINITION_NOARGS(methodName, docString) \
static PyObject *methodName(PyObject*); /* forward declaration so struct can go here */ \
static PyMethodDef methodName##_method = {#methodName, (PyCFunction)methodName, METH_NOARGS, docString}; \
static PyObject *methodName(PyObject *self) /* and now for the actual function */
// Global method with keywords
#define PYTHON_GLOBAL_METHOD_DEFINITION_WKEY(methodName, argsVar, keywordsVar, docString) \
static PyObject *methodName(PyObject*, PyObject*, PyObject*); /* forward declaration so struct can go here */ \
static PyMethodDef methodName##_method = {#methodName, (PyCFunction)methodName, METH_VARARGS | METH_KEYWORDS, docString}; \
static PyObject *methodName(PyObject *self, PyObject *argsVar, PyObject *keywordsVar) /* and now for the actual function */
// Basic global method
#define PYTHON_BASIC_GLOBAL_METHOD_DEFINITION(methodName, classMethodName, docString) \
static PyObject *methodName(PyObject*); /* forward declaration so struct can go here */ \
static PyMethodDef methodName##_method = {#methodName, (PyCFunction)methodName, METH_NOARGS, docString}; \
static PyObject *methodName(PyObject *self) /* and now for the actual function */ \
{ \
classMethodName(); \
PYTHON_RETURN_NONE; \
}
// this goes in the definition function
#define PYTHON_GLOBAL_METHOD(vectorVarName, methodName) vectorVarName.push_back(methodName##_method)
// not necessary, but for continuity with the NOARGS function definition above
#define PYTHON_GLOBAL_METHOD_NOARGS(vectorVarName, methodName) vectorVarName.push_back(methodName##_method);
// not necessary, but for continuity with the WKEY function definition above
#define PYTHON_GLOBAL_METHOD_WKEY(vectorVarName, methodName) vectorVarName.push_back(methodName##_method)
// not necessary, but for continuity with the BASIC function definition above
#define PYTHON_BASIC_GLOBAL_METHOD(vectorVarName, methodName) vectorVarName.push_back(methodName##_method)
/////////////////////////////////////////////////////////////////////
// Enum glue (these should all be inside a function)
/////////////////////////////////////////////////////////////////////
// the start of an enum block
#define PYTHON_ENUM_START(enumName) std::map<std::string, int> enumName##_enumValues
// for each element of the enum
#define PYTHON_ENUM_ELEMENT(enumName, elementName, elementValue) enumName##_enumValues[#elementName] = elementValue
// to finish off and define the enum
#define PYTHON_ENUM_END(m, enumName) pyEnum::MakeEnum(m, #enumName, enumName##_enumValues)
#endif // _pyGlueHelpers_h_