#!/usr/bin/env python
# -*- coding: utf-8 -*-

# This file is part of Beremiz, a Integrated Development Environment for
# programming IEC 61131-3 automates supporting plcopen standard and CanFestival.
#
# Copyright (C) 2007: Edouard TISSERANT and Laurent BESSARD
# Copyright (C) 2017: Andrey Skvortsov
#
# See COPYING file for copyrights details.
#
# 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 2
# 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, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.


from os.path import join, split, realpath
import util.paths as paths
sd = paths.AbsDir(__file__)

# Override gettext _ in this module
# since we just want string to be added to dictionnary
# but translation should happen here
_ = lambda x:x

LANGUAGES = ["IL","ST","FBD","LD","SFC"]

LOCATIONDATATYPES = {"X" : ["BOOL"],
                     "B" : ["SINT", "USINT", "BYTE", "STRING"],
                     "W" : ["INT", "UINT", "WORD", "WSTRING"],
                     "D" : ["DINT", "UDINT", "REAL", "DWORD"],
                     "L" : ["LINT", "ULINT", "LREAL", "LWORD"]}

#-------------------------------------------------------------------------------
#                        Function Block Types definitions
#-------------------------------------------------------------------------------

StdTC6Libs = [(_("Standard function blocks"),  join(sd, "Standard_Function_Blocks.xml")),
              (_("Additional function blocks"),join(sd, "Additional_Function_Blocks.xml"))]

StdFuncsCSV = join(sd,"iec_std.csv")


def GetBlockInfos(pou):
    infos = pou.getblockInfos()
    infos["inputs"] = [
        (var_name, var_type, "rising")
        if var_name in ["CU", "CD"]
        else (var_name, var_type, var_modifier)
        for var_name, var_type, var_modifier in infos["inputs"]]
    return infos

#-------------------------------------------------------------------------------
#                           Data Types definitions
#-------------------------------------------------------------------------------

"""
Ordored list of common data types defined in the IEC 61131-3
Each type is associated to his direct parent type. It defines then a hierarchy
between type that permits to make a comparison of two types
"""
TypeHierarchy_list = [
    ("ANY", None),
    ("ANY_DERIVED", "ANY"),
    ("ANY_ELEMENTARY", "ANY"),
    ("ANY_MAGNITUDE", "ANY_ELEMENTARY"),
    ("ANY_BIT", "ANY_ELEMENTARY"),
    ("ANY_NBIT", "ANY_BIT"),
    ("ANY_STRING", "ANY_ELEMENTARY"),
    ("ANY_DATE", "ANY_ELEMENTARY"),
    ("ANY_NUM", "ANY_MAGNITUDE"),
    ("ANY_REAL", "ANY_NUM"),
    ("ANY_INT", "ANY_NUM"),
    ("ANY_SINT", "ANY_INT"),
    ("ANY_UINT", "ANY_INT"),
    ("BOOL", "ANY_BIT"),
    ("SINT", "ANY_SINT"),
    ("INT", "ANY_SINT"),
    ("DINT", "ANY_SINT"),
    ("LINT", "ANY_SINT"),
    ("USINT", "ANY_UINT"),
    ("UINT", "ANY_UINT"),
    ("UDINT", "ANY_UINT"),
    ("ULINT", "ANY_UINT"),
    ("REAL", "ANY_REAL"),
    ("LREAL", "ANY_REAL"),
    ("TIME", "ANY_MAGNITUDE"),
    ("DATE", "ANY_DATE"),
    ("TOD", "ANY_DATE"),
    ("DT", "ANY_DATE"),
    ("STRING", "ANY_STRING"),
    ("BYTE", "ANY_NBIT"),
    ("WORD", "ANY_NBIT"),
    ("DWORD", "ANY_NBIT"),
    ("LWORD", "ANY_NBIT")
    #("WSTRING", "ANY_STRING") # TODO
]

DefaultType = "DINT"

DataTypeRange_list = [
    ("SINT", (-2**7, 2**7 - 1)),
    ("INT", (-2**15, 2**15 - 1)),
    ("DINT", (-2**31, 2**31 - 1)),
    ("LINT", (-2**31, 2**31 - 1)),
    ("USINT", (0, 2**8 - 1)),
    ("UINT", (0, 2**16 - 1)),
    ("UDINT", (0, 2**31 - 1)),
    ("ULINT", (0, 2**31 - 1))
]

ANY_TO_ANY_FILTERS = {
    "ANY_TO_ANY":[
        # simple type conv are let as C cast
        (("ANY_INT","ANY_BIT"),("ANY_NUM","ANY_BIT")),
        (("ANY_REAL",),("ANY_REAL",)),
        # REAL_TO_INT
        (("ANY_REAL",),("ANY_SINT",)),
        (("ANY_REAL",),("ANY_UINT",)),
        (("ANY_REAL",),("ANY_BIT",)),
        # TO_TIME
        (("ANY_INT","ANY_BIT"),("ANY_DATE","TIME")),
        (("ANY_REAL",),("ANY_DATE","TIME")),
        (("ANY_STRING",), ("ANY_DATE","TIME")),
        # FROM_TIME
        (("ANY_DATE","TIME"), ("ANY_REAL",)),
        (("ANY_DATE","TIME"), ("ANY_INT","ANY_NBIT")),
        (("TIME",), ("ANY_STRING",)),
        (("DATE",), ("ANY_STRING",)),
        (("TOD",), ("ANY_STRING",)),
        (("DT",), ("ANY_STRING",)),
        # TO_STRING
        (("BOOL",), ("ANY_STRING",)),
        (("ANY_BIT",), ("ANY_STRING",)),
        (("ANY_REAL",), ("ANY_STRING",)),
        (("ANY_SINT",), ("ANY_STRING",)),
        (("ANY_UINT",), ("ANY_STRING",)),
        # FROM_STRING
        (("ANY_STRING",), ("BOOL",)),
        (("ANY_STRING",), ("ANY_BIT",)),
        (("ANY_STRING",), ("ANY_SINT",)),
        (("ANY_STRING",), ("ANY_UINT",)),
        (("ANY_STRING",), ("ANY_REAL",))],
    "BCD_TO_ANY":[
        (("BYTE",),("USINT",)),
        (("WORD",),("UINT",)),
        (("DWORD",),("UDINT",)),
        (("LWORD",),("ULINT",))],
    "ANY_TO_BCD":[
        (("USINT",),("BYTE",)),
        (("UINT",),("WORD",)),
        (("UDINT",),("DWORD",)),
        (("ULINT",),("LWORD",))]
}

# remove gettext override
del _