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

#include "turmit.h"

/**
 * @todo search for decref and memory leaks :/
 */

typedef struct
{
	PyObject VAR_HEAD;
	
	Py_ssize_t len;
	turmit_t *turmit;
} CTurmit;

static PyModuleDef cturmitmodule = {
	PyModuleDef_HEAD_INIT,
	"cturmit",
	"Module that implements turmits in C",
	-1,
	NULL, NULL, NULL, NULL, NULL
};


static PyMemberDef CTurmit_members[] = {
	{"len", T_PYSSIZET, offsetof(CTurmit, len), 0,
		"Expression len"},
	/*
	   {"heap_sz", T_PYSSIZET, offsetof(CTurmit, heap_sz), 0,
	   "Item heap counter"},
	 */
	{NULL}  /* Sentinel */
};

/*
	Magic methods
*/
Py_ssize_t CTurmit_len(CTurmit*);

static PyMappingMethods CTurmit_asmapping[] = {{
	(void*)CTurmit_len,
}};

/*
	Other methods
*/
#define TURMIT_PYOP(NAME) PyObject* CTurmit_op_##NAME(CTurmit* self) {\
	turmit_op_##NAME(self->turmit);\
	Py_RETURN_NONE;\
}
#define TURMIT_PYOPDEF(NAME) {#NAME, (PyCFunction)CTurmit_op_##NAME, \
	METH_NOARGS, NULL}

PyObject* CTurmit__push(CTurmit* self, PyObject *args);
PyObject* CTurmit__pop(CTurmit* self);
TURMIT_PYOP(mem_sz)
TURMIT_PYOP(add)
TURMIT_PYOP(sub)
TURMIT_PYOP(bin_and)
TURMIT_PYOP(dup)
TURMIT_PYOP(lshift)
TURMIT_PYOP(mod)
TURMIT_PYOP(mul)
TURMIT_PYOP(div)
TURMIT_PYOP(bin_or)
TURMIT_PYOP(bin_xor)
TURMIT_PYOP(pop)
TURMIT_PYOP(swp)
TURMIT_PYOP(jmp)
TURMIT_PYOP(jz)
TURMIT_PYOP(jcmp)

static PyMethodDef CTurmit_methods[] = {
	{"_push", (PyCFunction)CTurmit__push, METH_KEYWORDS | METH_VARARGS,
		"Push a value on the stack"},
	{"_pop", (PyCFunction)CTurmit__pop, METH_NOARGS,
		"Pop a value from the stack"},
	TURMIT_PYOPDEF(mem_sz),
	TURMIT_PYOPDEF(add),
	TURMIT_PYOPDEF(sub),
	TURMIT_PYOPDEF(bin_and),
	TURMIT_PYOPDEF(dup),
	TURMIT_PYOPDEF(lshift),
	TURMIT_PYOPDEF(mod),
	TURMIT_PYOPDEF(mul),
	TURMIT_PYOPDEF(div),
	TURMIT_PYOPDEF(bin_or),
	TURMIT_PYOPDEF(bin_xor),
	TURMIT_PYOPDEF(pop),
	TURMIT_PYOPDEF(swp),
	TURMIT_PYOPDEF(jmp),
	TURMIT_PYOPDEF(jz),
	TURMIT_PYOPDEF(jcmp),
	{NULL}  /* Sentinel */
};

PyObject* CTurmit_get_shead(CTurmit *self, void *ref);
PyObject* CTurmit_get__cur(CTurmit *self, void *ref);
PyObject* CTurmit_get__stack(CTurmit *self, void *ref);

static struct PyGetSetDef CTurmit_getset[] = {
	{"shead", (getter)CTurmit_get_shead, NULL, NULL, NULL},
	{"_cur", (getter)CTurmit_get__cur, NULL, NULL, NULL},
	{"_stack", (getter)CTurmit_get__stack, NULL, NULL, NULL},
	{NULL}  /* Sentinel */
};

static int _CTurmit_copy_init(CTurmit *self, CTurmit *t);

static PyObject *
CTurmit_new(PyTypeObject *type, PyObject *args, PyObject *kwds);

/**@brief CTurmit __init__ function
 * @param CTurmit* self
 * @param PyObject* can contain an interger representing stack size
 * @param Pyobject* contains kwargs. Can be : stack_size, max_int, prog
 */
static int
CTurmit_init(CTurmit *self, PyObject *args, PyObject *kwds);

void
CTurmit_dealloc(CTurmit *self);

PyObject* CTurmit_call(PyObject *func, PyObject *args, PyObject *kwds);

static PyTypeObject CTurmitType = {
	PyVarObject_HEAD_INIT(NULL, 0)
		"cturmit.CTurmit",			/* tp_name */
	sizeof(CTurmit),				/* tp_basicsize */
	0,						/* tp_itemsize */
	(destructor)CTurmit_dealloc,			/* tp_dealloc */
	0,						/* tp_print */
	0,						/* tp_getattr */
	0,						/* tp_setattr */
	0,						/* tp_reserved */
	0,						/* tp_repr */
	0,						/* tp_as_number */
	0,						/* tp_as_sequence */
	CTurmit_asmapping,				/* tp_as_mapping */
	0,						/* tp_hash  */
	CTurmit_call,					/* tp_call */
	0,						/* tp_str */
	0,						/* tp_getattro */
	0,						/* tp_setattro */
	0,						/* tp_as_buffer */
	Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE,  	/* tp_flags */
	"CTurmit objects",				/* tp_doc */
	0,						/* tp_traverse */
	0,						/* tp_clear */
	0,						/* tp_richcompare */
	0,						/* tp_weaklistoffset */
	0,						/* tp_iter */
	0,						/* tp_iternext */
	CTurmit_methods,				/* tp_methods */
	CTurmit_members,				/* tp_members */
	CTurmit_getset,					/* tp_getset */
	0,						/* tp_base */
	0,						/* tp_dict */
	0,						/* tp_descr_get */
	0,						/* tp_descr_set */
	0,						/* tp_dictoffset */
	(initproc)CTurmit_init,				/* tp_init */
	0,						/* tp_alloc */
	CTurmit_new,					/* tp_new */
};