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#!/usr/bin/env python

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# -*- coding: utf-8 -*-

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# This file is part of Beremiz, a Integrated Development Environment for

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# programming IEC 61131-3 automates supporting plcopen standard and CanFestival.

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#

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# Copyright (C) 2007: Edouard TISSERANT and Laurent BESSARD

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#

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# See COPYING file for copyrights details.

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#

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# This program is free software; you can redistribute it and/or

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# modify it under the terms of the GNU General Public License

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# as published by the Free Software Foundation; either version 2

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# of the License, or (at your option) any later version.

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#

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# This program is distributed in the hope that it will be useful,

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# but WITHOUT ANY WARRANTY; without even the implied warranty of

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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

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# GNU General Public License for more details.

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#

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# You should have received a copy of the GNU General Public License

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# along with this program; if not, write to the Free Software

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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.

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from __future__ import absolute_import

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from __future__ import division

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import re

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from functools import reduce

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import wx

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import wx.stc

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from six.moves import xrange

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from graphics.GraphicCommons import ERROR_HIGHLIGHT, SEARCH_RESULT_HIGHLIGHT, REFRESH_HIGHLIGHT_PERIOD

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from plcopen.structures import ST_BLOCK_START_KEYWORDS, IEC_BLOCK_START_KEYWORDS, LOCATIONDATATYPES

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from editors.EditorPanel import EditorPanel

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from controls.CustomStyledTextCtrl import CustomStyledTextCtrl, faces, GetCursorPos

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# -------------------------------------------------------------------------------

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#                         Textual programs Viewer class

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# -------------------------------------------------------------------------------

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NEWLINE = "\n"

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NUMBERS = [str(i) for i in xrange(10)]

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LETTERS = ['_']

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for i in xrange(26):

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    LETTERS.append(chr(ord('a') + i))

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    LETTERS.append(chr(ord('A') + i))

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[STC_PLC_WORD, STC_PLC_COMMENT, STC_PLC_NUMBER, STC_PLC_STRING,

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 STC_PLC_VARIABLE, STC_PLC_PARAMETER, STC_PLC_FUNCTION, STC_PLC_JUMP,

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 STC_PLC_ERROR, STC_PLC_SEARCH_RESULT,

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 STC_PLC_EMPTY] = range(11)

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[SPACE, WORD, NUMBER, STRING, WSTRING, COMMENT, PRAGMA, DPRAGMA] = range(8)

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re_texts = {}

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re_texts["letter"] = "[A-Za-z]"

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re_texts["digit"] = "[0-9]"

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re_texts["identifier"] = "((?:%(letter)s|(?:_(?:%(letter)s|%(digit)s)))(?:_?(?:%(letter)s|%(digit)s))*)" % re_texts

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IDENTIFIER_MODEL = re.compile(re_texts["identifier"])

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LABEL_MODEL = re.compile("[ \t\n]%(identifier)s:[ \t\n]" % re_texts)

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EXTENSIBLE_PARAMETER = re.compile("IN[1-9][0-9]*$")

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HIGHLIGHT_TYPES = {

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    ERROR_HIGHLIGHT: STC_PLC_ERROR,

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    SEARCH_RESULT_HIGHLIGHT: STC_PLC_SEARCH_RESULT,

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}

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    71

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def LineStartswith(line, symbols):

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    return reduce(lambda x, y: x or y, map(line.startswith, symbols), False)

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    75

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class TextViewer(EditorPanel):

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    def _init_Editor(self, prnt):

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        self.Editor = CustomStyledTextCtrl(parent=prnt, name="TextViewer", size=wx.Size(0, 0), style=0)

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        self.Editor.ParentWindow = self

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        self.Editor.CmdKeyAssign(ord('+'), wx.stc.STC_SCMOD_CTRL, wx.stc.STC_CMD_ZOOMIN)

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        self.Editor.CmdKeyAssign(ord('-'), wx.stc.STC_SCMOD_CTRL, wx.stc.STC_CMD_ZOOMOUT)

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        self.Editor.SetViewWhiteSpace(False)

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        self.Editor.SetLexer(wx.stc.STC_LEX_CONTAINER)

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    89

        # Global default styles for all languages

    90

        self.Editor.StyleSetSpec(wx.stc.STC_STYLE_DEFAULT, "face:%(mono)s,size:%(size)d" % faces)

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        self.Editor.StyleClearAll()  # Reset all to be like the default

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        self.Editor.StyleSetSpec(wx.stc.STC_STYLE_LINENUMBER,  "back:#C0C0C0,size:%(size)d" % faces)

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        self.Editor.SetSelBackground(1, "#E0E0E0")

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        # Highlighting styles

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        self.Editor.StyleSetSpec(STC_PLC_WORD, "fore:#00007F,bold,size:%(size)d" % faces)

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        self.Editor.StyleSetSpec(STC_PLC_VARIABLE, "fore:#7F0000,size:%(size)d" % faces)

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        self.Editor.StyleSetSpec(STC_PLC_PARAMETER, "fore:#7F007F,size:%(size)d" % faces)

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        self.Editor.StyleSetSpec(STC_PLC_FUNCTION, "fore:#7F7F00,size:%(size)d" % faces)

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        self.Editor.StyleSetSpec(STC_PLC_COMMENT, "fore:#7F7F7F,size:%(size)d" % faces)

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        self.Editor.StyleSetSpec(STC_PLC_NUMBER, "fore:#007F7F,size:%(size)d" % faces)

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        self.Editor.StyleSetSpec(STC_PLC_STRING, "fore:#007F00,size:%(size)d" % faces)

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        self.Editor.StyleSetSpec(STC_PLC_JUMP, "fore:#FF7FFF,size:%(size)d" % faces)

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        self.Editor.StyleSetSpec(STC_PLC_ERROR, "fore:#FF0000,back:#FFFF00,size:%(size)d" % faces)

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        self.Editor.StyleSetSpec(STC_PLC_SEARCH_RESULT, "fore:#FFFFFF,back:#FFA500,size:%(size)d" % faces)

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        # Indicators styles

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        self.Editor.IndicatorSetStyle(0, wx.stc.STC_INDIC_SQUIGGLE)

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        if self.ParentWindow is not None and self.Controler is not None:

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            self.Editor.IndicatorSetForeground(0, wx.RED)

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        else:

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            self.Editor.IndicatorSetForeground(0, wx.WHITE)

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   115

        # Line numbers in the margin

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        self.Editor.SetMarginType(1, wx.stc.STC_MARGIN_NUMBER)

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        self.Editor.SetMarginWidth(1, 50)

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   119

        # Folding

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        self.Editor.MarkerDefine(wx.stc.STC_MARKNUM_FOLDEROPEN,    wx.stc.STC_MARK_BOXMINUS,          "white", "#808080")

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        self.Editor.MarkerDefine(wx.stc.STC_MARKNUM_FOLDER,        wx.stc.STC_MARK_BOXPLUS,           "white", "#808080")

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        self.Editor.MarkerDefine(wx.stc.STC_MARKNUM_FOLDERSUB,     wx.stc.STC_MARK_VLINE,             "white", "#808080")

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        self.Editor.MarkerDefine(wx.stc.STC_MARKNUM_FOLDERTAIL,    wx.stc.STC_MARK_LCORNER,           "white", "#808080")

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        self.Editor.MarkerDefine(wx.stc.STC_MARKNUM_FOLDEREND,     wx.stc.STC_MARK_BOXPLUSCONNECTED,  "white", "#808080")

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        self.Editor.MarkerDefine(wx.stc.STC_MARKNUM_FOLDEROPENMID, wx.stc.STC_MARK_BOXMINUSCONNECTED, "white", "#808080")

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        self.Editor.MarkerDefine(wx.stc.STC_MARKNUM_FOLDERMIDTAIL, wx.stc.STC_MARK_TCORNER,           "white", "#808080")

   127

   128

        # Indentation size

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        self.Editor.SetTabWidth(2)

   130

        self.Editor.SetUseTabs(0)

   131

   132

        self.Editor.SetModEventMask(wx.stc.STC_MOD_BEFOREINSERT |

   133

                                    wx.stc.STC_MOD_BEFOREDELETE)

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        self.Bind(wx.stc.EVT_STC_STYLENEEDED, self.OnStyleNeeded, self.Editor)

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        self.Editor.Bind(wx.stc.EVT_STC_MARGINCLICK, self.OnMarginClick)

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        self.Editor.Bind(wx.stc.EVT_STC_UPDATEUI, self.OnUpdateUI)

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        self.Editor.Bind(wx.EVT_KEY_DOWN, self.OnKeyDown)

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        if self.Controler is not None:

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            self.Editor.Bind(wx.EVT_KILL_FOCUS, self.OnKillFocus)

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            self.Bind(wx.stc.EVT_STC_DO_DROP, self.OnDoDrop, self.Editor)

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            self.Bind(wx.stc.EVT_STC_MODIFIED, self.OnModification, self.Editor)

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   144

    def __init__(self, parent, tagname, window, controler, debug=False, instancepath=""):

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        if tagname != "" and controler is not None:

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            self.VARIABLE_PANEL_TYPE = controler.GetPouType(tagname.split("::")[1])

   147

   148

        EditorPanel.__init__(self, parent, tagname, window, controler, debug)

   149

   150

        self.Keywords = []

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        self.Variables = {}

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        self.Functions = {}

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        self.TypeNames = []

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        self.Jumps = []

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        self.EnumeratedValues = []

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        self.DisableEvents = True

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        self.TextSyntax = None

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        self.CurrentAction = None

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   160

        self.InstancePath = instancepath

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        self.ContextStack = []

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        self.CallStack = []

   163

   164

        self.ResetSearchResults()

   165

   166

        self.RefreshHighlightsTimer = wx.Timer(self, -1)

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        self.Bind(wx.EVT_TIMER, self.OnRefreshHighlightsTimer, self.RefreshHighlightsTimer)

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   169

    def __del__(self):

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        self.RefreshHighlightsTimer.Stop()

   171

   172

    def GetTitle(self):

   173

        if self.Debug or self.TagName == "":

   174

            if len(self.InstancePath) > 15:

   175

                return "..." + self.InstancePath[-12:]

   176

            return self.InstancePath

   177

        return EditorPanel.GetTitle(self)

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   179

    def GetInstancePath(self):

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        return self.InstancePath

   181

   182

    def IsViewing(self, tagname):

   183

        if self.Debug or self.TagName == "":

   184

            return self.InstancePath == tagname

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        else:

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            return self.TagName == tagname

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   188

    def GetText(self):

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        return self.Editor.GetText()

   190

   191

    def SetText(self, text):

   192

        self.Editor.SetText(text)

   193

   194

    def SelectAll(self):

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        self.Editor.SelectAll()

   196

   197

    def Colourise(self, start, end):

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        self.Editor.Colourise(start, end)

   199

   200

    def StartStyling(self, pos, mask):

   201

        self.Editor.StartStyling(pos, mask)

   202

   203

    def SetStyling(self, length, style):

   204

        self.Editor.SetStyling(length, style)

   205

   206

    def GetCurrentPos(self):

   207

        return self.Editor.GetCurrentPos()

   208

   209

    def ResetSearchResults(self):

   210

        self.Highlights = []

   211

        self.SearchParams = None

   212

        self.SearchResults = None

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        self.CurrentFindHighlight = None

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   215

    Buffering = "Off"

   216

    def OnModification(self, event):

   217

        if not self.DisableEvents:

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            mod_type = event.GetModificationType()

   219

            if mod_type & wx.stc.STC_MOD_BEFOREINSERT:

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                if self.CurrentAction is None:

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                    self.Buffering = "ShouldStart"

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                elif self.CurrentAction[0] != "Add" or self.CurrentAction[1] != event.GetPosition() - 1:

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                    self.Buffering = "ShouldRestart"

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                self.CurrentAction = ("Add", event.GetPosition())

   225

                self.RefreshModelAfter()

   226

            elif mod_type & wx.stc.STC_MOD_BEFOREDELETE:

   227

                if self.CurrentAction is None:

   228

                    self.Buffering = "ShouldStart"

   229

                elif self.CurrentAction[0] != "Delete" or self.CurrentAction[1] != event.GetPosition() + 1:

   230

                    self.Buffering = "ShouldRestart"

   231

                self.CurrentAction = ("Delete", event.GetPosition())

   232

                self.RefreshModelAfter()

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        event.Skip()

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   235

    def OnDoDrop(self, event):

   236

        try:

   237

            values = eval(event.GetDragText())

   238

        except Exception:

   239

            values = event.GetDragText()

   240

        if isinstance(values, tuple):

   241

            message = None

   242

            if values[1] in ["program", "debug"]:

   243

                event.SetDragText("")

   244

            elif values[1] in ["functionBlock", "function"]:

   245

                blocktype = values[0]

   246

                blockname = values[2]

   247

                if len(values) > 3:

   248

                    blockinputs = values[3]

   249

                else:

   250

                    blockinputs = None

   251

                if values[1] != "function":

   252

                    if blockname == "":

   253

                        dialog = wx.TextEntryDialog(self.ParentWindow, _("Block name"), _("Please enter a block name"), "", wx.OK | wx.CANCEL | wx.CENTRE)

   254

                        if dialog.ShowModal() == wx.ID_OK:

   255

                            blockname = dialog.GetValue()

   256

                        else:

   257

                            event.SetDragText("")

   258

                            return

   259

                        dialog.Destroy()

   260

                    if blockname.upper() in [name.upper() for name in self.Controler.GetProjectPouNames(self.Debug)]:

   261

                        message = _("\"%s\" pou already exists!") % blockname

   262

                    elif blockname.upper() in [name.upper() for name in self.Controler.GetEditedElementVariables(self.TagName, self.Debug)]:

   263

                        message = _("\"%s\" element for this pou already exists!") % blockname

   264

                    else:

   265

                        self.Controler.AddEditedElementPouVar(self.TagName, values[0], blockname)

   266

                        self.RefreshVariablePanel()

   267

                        self.RefreshVariableTree()

   268

                blockinfo = self.Controler.GetBlockType(blocktype, blockinputs, self.Debug)

   269

                hint = ',\n    '.join(

   270

                    [" " + fctdecl[0]+" := (*"+fctdecl[1]+"*)" for fctdecl in blockinfo["inputs"]] +

   271

                    [" " + fctdecl[0]+" => (*"+fctdecl[1]+"*)" for fctdecl in blockinfo["outputs"]])

   272

                if values[1] == "function":

   273

                    event.SetDragText(blocktype+"(\n    "+hint+")")

   274

                else:

   275

                    event.SetDragText(blockname+"(\n    "+hint+")")

   276

            elif values[1] == "location":

   277

                _pou_name, pou_type = self.Controler.GetEditedElementType(self.TagName, self.Debug)

   278

                if len(values) > 2 and pou_type == "program":

   279

                    var_name = values[3]

   280

                    dlg = wx.TextEntryDialog(

   281

                        self.ParentWindow,

   282

                        _("Confirm or change variable name"),

   283

                        _('Variable Drop'), var_name)

   284

                    dlg.SetValue(var_name)

   285

                    var_name = dlg.GetValue() if dlg.ShowModal() == wx.ID_OK else None

   286

                    dlg.Destroy()

   287

                    if var_name is None:

   288

                        return

   289

                    elif var_name.upper() in [name.upper() for name in self.Controler.GetProjectPouNames(self.Debug)]:

   290

                        message = _("\"%s\" pou already exists!") % var_name

   291

                    elif var_name.upper() in [name.upper() for name in self.Controler.GetEditedElementVariables(self.TagName, self.Debug)]:

   292

                        message = _("\"%s\" element for this pou already exists!") % var_name

   293

                    else:

   294

                        location = values[0]

   295

                        if not location.startswith("%"):

   296

                            dialog = wx.SingleChoiceDialog(

   297

                                self.ParentWindow,

   298

                                _("Select a variable class:"),

   299

                                _("Variable class"),

   300

                                [_("Input"), _("Output"), _("Memory")],

   301

                                wx.DEFAULT_DIALOG_STYLE | wx.OK | wx.CANCEL)

   302

                            if dialog.ShowModal() == wx.ID_OK:

   303

                                selected = dialog.GetSelection()

   304

                            else:

   305

                                selected = None

   306

                            dialog.Destroy()

   307

                            if selected is None:

   308

                                event.SetDragText("")

   309

                                return

   310

                            if selected == 0:

   311

                                location = "%I" + location

   312

                            elif selected == 1:

   313

                                location = "%Q" + location

   314

                            else:

   315

                                location = "%M" + location

   316

                        if values[2] is not None:

   317

                            var_type = values[2]

   318

                        else:

   319

                            var_type = LOCATIONDATATYPES.get(location[2], ["BOOL"])[0]

   320

                        self.Controler.AddEditedElementPouVar(

   321

                            self.TagName,

   322

                            var_type, var_name,

   323

                            location=location, description=values[4])

   324

                        self.RefreshVariablePanel()

   325

                        self.RefreshVariableTree()

   326

                        event.SetDragText(var_name)

   327

                else:

   328

                    event.SetDragText("")

   329

            elif values[1] == "NamedConstant":

   330

                _pou_name, pou_type = self.Controler.GetEditedElementType(self.TagName, self.Debug)

   331

                if pou_type == "program":

   332

                    initval = values[0]

   333

                    var_name = values[3]

   334

                    dlg = wx.TextEntryDialog(

   335

                        self.ParentWindow,

   336

                        _("Confirm or change variable name"),

   337

                        _('Variable Drop'), var_name)

   338

                    dlg.SetValue(var_name)

   339

                    var_name = dlg.GetValue() if dlg.ShowModal() == wx.ID_OK else None

   340

                    dlg.Destroy()

   341

                    if var_name is None:

   342

                        return

   343

                    elif var_name.upper() in [name.upper() for name in self.Controler.GetProjectPouNames(self.Debug)]:

   344

                        message = _("\"%s\" pou already exists!") % var_name

   345

                    else:

   346

                        var_type = values[2]

   347

                        if not var_name.upper() in [name.upper() for name in self.Controler.GetEditedElementVariables(self.TagName, self.Debug)]:

   348

                            self.Controler.AddEditedElementPouVar(self.TagName,

   349

                                                                  var_type,

   350

                                                                  var_name,

   351

                                                                  description=values[4], initval=initval)

   352

                            self.RefreshVariablePanel()

   353

                            self.RefreshVariableTree()

   354

                        event.SetDragText(var_name)

   355

            elif values[1] == "Global":

   356

                var_name = values[0]

   357

                dlg = wx.TextEntryDialog(

   358

                    self.ParentWindow,

   359

                    _("Confirm or change variable name"),

   360

                    _('Variable Drop'), var_name)

   361

                dlg.SetValue(var_name)

   362

                var_name = dlg.GetValue() if dlg.ShowModal() == wx.ID_OK else None

   363

                dlg.Destroy()

   364

                if var_name is None:

   365

                    return

   366

                elif var_name.upper() in [name.upper() for name in self.Controler.GetProjectPouNames(self.Debug)]:

   367

                    message = _("\"%s\" pou already exists!") % var_name

   368

                else:

   369

                    if not var_name.upper() in [name.upper() for name in self.Controler.GetEditedElementVariables(self.TagName, self.Debug)]:

   370

                        kwargs = dict(description=values[4]) if len(values)>4 else {}

   371

                        self.Controler.AddEditedElementPouExternalVar(self.TagName, values[2], var_name, **kwargs)

   372

                        self.RefreshVariablePanel()

   373

                        self.RefreshVariableTree()

   374

                    event.SetDragText(var_name)

   375

            elif values[1] == "Constant":

   376

                event.SetDragText(values[0])

   377

            elif values[3] == self.TagName:

   378

                self.ResetBuffer()

   379

                event.SetDragText(values[0])

   380

                self.RefreshModelAfter()

   381

            else:

   382

                message = _("Variable don't belong to this POU!")

   383

            if message is not None:

   384

                dialog = wx.MessageDialog(self, message, _("Error"), wx.OK | wx.ICON_ERROR)

   385

                dialog.ShowModal()

   386

                dialog.Destroy()

   387

                event.SetDragText("")

   388

        event.Skip()

   389

   390

    def SetTextSyntax(self, syntax):

   391

        self.TextSyntax = syntax

   392

        if syntax in ["ST", "ALL"]:

   393

            self.Editor.SetMarginType(2, wx.stc.STC_MARGIN_SYMBOL)

   394

            self.Editor.SetMarginMask(2, wx.stc.STC_MASK_FOLDERS)

   395

            self.Editor.SetMarginSensitive(2, 1)

   396

            self.Editor.SetMarginWidth(2, 12)

   397

            if syntax == "ST":

   398

                self.BlockStartKeywords = ST_BLOCK_START_KEYWORDS

   399

                self.BlockEndKeywords = ST_BLOCK_START_KEYWORDS

   400

            else:

   401

                self.BlockStartKeywords = IEC_BLOCK_START_KEYWORDS

   402

                self.BlockEndKeywords = IEC_BLOCK_START_KEYWORDS

   403

        else:

   404

            self.BlockStartKeywords = []

   405

            self.BlockEndKeywords = []

   406

   407

    def SetKeywords(self, keywords):

   408

        self.Keywords = [keyword.upper() for keyword in keywords]

   409

        self.Colourise(0, -1)

   410

   411

    def RefreshJumpList(self):

   412

        if self.TextSyntax == "IL":

   413

            self.Jumps = [jump.upper() for jump in LABEL_MODEL.findall(self.GetText())]

   414

   415

    # Buffer the last model state

   416

    def RefreshBuffer(self):

   417

        self.Controler.BufferProject()

   418

        if self.ParentWindow:

   419

            self.ParentWindow.RefreshTitle()

   420

            self.ParentWindow.RefreshFileMenu()

   421

            self.ParentWindow.RefreshEditMenu()

   422

   423

    def StartBuffering(self):

   424

        self.Controler.StartBuffering()

   425

        if self.ParentWindow:

   426

            self.ParentWindow.RefreshTitle()

   427

            self.ParentWindow.RefreshFileMenu()

   428

            self.ParentWindow.RefreshEditMenu()

   429

   430

    def EndBuffering(self):

   431

        self.Controler.EndBuffering()

   432

   433

    def ResetBuffer(self):

   434

        if self.CurrentAction is not None:

   435

            self.EndBuffering()

   436

            self.CurrentAction = None

   437

            self.Buffering == "Off"

   438

   439

    def GetBufferState(self):

   440

        if not self.Debug and self.TextSyntax != "ALL":

   441

            return self.Controler.GetBufferState()

   442

        return False, False

   443

   444

    def Undo(self):

   445

        if not self.Debug and self.TextSyntax != "ALL":

   446

            self.Controler.LoadPrevious()

   447

            self.ParentWindow.CloseTabsWithoutModel()

   448

   449

    def Redo(self):

   450

        if not self.Debug and self.TextSyntax != "ALL":

   451

            self.Controler.LoadNext()

   452

            self.ParentWindow.CloseTabsWithoutModel()

   453

   454

    def HasNoModel(self):

   455

        if not self.Debug and self.TextSyntax != "ALL":

   456

            return self.Controler.GetEditedElement(self.TagName) is None

   457

        return False

   458

   459

    def RefreshView(self, variablepanel=True):

   460

        EditorPanel.RefreshView(self, variablepanel)

   461

   462

        if self.Controler is not None:

   463

            self.ResetBuffer()

   464

            self.DisableEvents = True

   465

            old_cursor_pos = self.GetCurrentPos()

   466

            line = self.Editor.GetFirstVisibleLine()

   467

            column = self.Editor.GetXOffset()

   468

            old_text = self.GetText()

   469

            new_text = self.Controler.GetEditedElementText(self.TagName, self.Debug)

   470

            if old_text != new_text:

   471

                self.SetText(new_text)

   472

                new_cursor_pos = GetCursorPos(old_text, new_text)

   473

                self.Editor.LineScroll(column, line)

   474

                if new_cursor_pos is not None:

   475

                    self.Editor.GotoPos(new_cursor_pos)

   476

                else:

   477

                    self.Editor.GotoPos(old_cursor_pos)

   478

                self.RefreshJumpList()

   479

                self.Editor.EmptyUndoBuffer()

   480

            self.DisableEvents = False

   481

   482

            self.RefreshVariableTree()

   483

   484

            self.TypeNames = [typename.upper() for typename in self.Controler.GetDataTypes(self.TagName, True, self.Debug)]

   485

            self.EnumeratedValues = [value.upper() for value in self.Controler.GetEnumeratedDataValues()]

   486

   487

            self.Functions = {}

   488

            for category in self.Controler.GetBlockTypes(self.TagName, self.Debug):

   489

                for blocktype in category["list"]:

   490

                    blockname = blocktype["name"].upper()

   491

                    if blocktype["type"] == "function" and blockname not in self.Keywords and blockname not in self.Variables.keys():

   492

                        interface = dict([(name, {}) for name, _type, _modifier in blocktype["inputs"] + blocktype["outputs"] if name != ''])

   493

                        for param in ["EN", "ENO"]:

   494

                            if param not in interface:

   495

                                interface[param] = {}

   496

                        if blockname in self.Functions:

   497

                            self.Functions[blockname]["interface"].update(interface)

   498

                            self.Functions[blockname]["extensible"] |= blocktype["extensible"]

   499

                        else:

   500

                            self.Functions[blockname] = {"interface": interface,

   501