import ctypes, ctypes.util

from . import _islhelper
from ._islhelper import *


__all__ = [
    'libisl',
    'isl_version',
    'mainctx',
    'isl_val_to_int',
    'isl_basic_set_to_str', 'isl_basic_set_constraints',
    'isl_set_to_str', 'isl_set_basic_sets',
    'isl_set_points',
    'isl_vertices_vertices',
    'isl_multi_aff_to_str',
]


libisl = ctypes.CDLL(ctypes.util.find_library('isl'))
libisl.isl_dim_set = _islhelper.dim_set

libisl.isl_version.restype = ctypes.c_char_p
isl_version = libisl.isl_version().decode().strip()[len('isl-'):]


mainctx = libisl.isl_ctx_alloc()


libisl.isl_printer_get_str.restype = ctypes.c_char_p

def isl_val_to_int(islval):
    islpr = libisl.isl_printer_to_str(mainctx)
    islpr = libisl.isl_printer_print_val(islpr, islval)
    string = libisl.isl_printer_get_str(islpr).decode()
    return int(string)

def isl_basic_set_to_str(islbset):
    islpr = libisl.isl_printer_to_str(mainctx)
    islpr = libisl.isl_printer_print_basic_set(islpr, islbset)
    string = libisl.isl_printer_get_str(islpr).decode()
    return string

def isl_set_to_str(islset):
    islpr = libisl.isl_printer_to_str(mainctx)
    islpr = libisl.isl_printer_print_set(islpr, islset)
    string = libisl.isl_printer_get_str(islpr).decode()
    return string

def isl_multi_aff_to_str(islmaff):
    islpr = libisl.isl_printer_to_str(mainctx)
    islpr = libisl.isl_printer_print_multi_aff(islpr, islmaff)
    string = libisl.isl_printer_get_str(islpr).decode()
    return string