1 files changed, 172 insertions, 0 deletions
diff --git a/pyGHDL/dom/NonStandard.py b/pyGHDL/dom/NonStandard.py
new file mode 100644
index 000000000..9010e392b
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+++ b/pyGHDL/dom/NonStandard.py
@@ -0,0 +1,172 @@
+# =============================================================================
+#               ____ _   _ ____  _          _
+#  _ __  _   _ / ___| | | |  _ \| |      __| | ___  _ __ ___
+# | '_ \| | | | |  _| |_| | | | | |     / _` |/ _ \| '_ ` _ \
+# | |_) | |_| | |_| |  _  | |_| | |___ | (_| | (_) | | | | | |
+# | .__/ \__, |\____|_| |_|____/|_____(_)__,_|\___/|_| |_| |_|
+# |_|    |___/
+# =============================================================================
+# Authors:
+#   Patrick Lehmann
+#
+# Package module:   DOM: Elements not covered by the VHDL standard.
+#
+# License:
+# ============================================================================
+#  Copyright (C) 2019-2021 Tristan Gingold
+#
+#  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, see <gnu.org/licenses>.
+#
+# SPDX-License-Identifier: GPL-2.0-or-later
+# ============================================================================
+
+"""
+.. todo::
+   Add a module documentation.
+"""
+from pathlib import Path
+from typing import Any
+
+from pydecor import export
+
+from pyVHDLModel.VHDLModel import (
+    Design as VHDLModel_Design,
+    Library as VHDLModel_Library,
+    Document as VHDLModel_Document,
+)
+
+from pyGHDL.libghdl import (
+    initialize as libghdl_initialize,
+    finalize as libghdl_finalize,
+    set_option as libghdl_set_option,
+    analyze_init_status as libghdl_analyze_init_status,
+    name_table,
+    files_map,
+    errorout_memory,
+    LibGHDLException,
+    utils,
+)
+from pyGHDL.libghdl.vhdl import nodes, sem_lib, parse
+from pyGHDL.dom._Utils import GetIirKindOfNode
+from pyGHDL.dom.Common import DOMException, GHDLMixin
+from pyGHDL.dom.DesignUnit import (
+    Entity,
+    Architecture,
+    Package,
+    PackageBody,
+    Context,
+    Configuration,
+)
+
+__all__ = []
+
+
+@export
+class Design(VHDLModel_Design):
+    def __init__(self):
+        super().__init__()
+
+        self.__ghdl_init()
+
+    def __ghdl_init(self):
+        """Initialization: set options and then load libraries."""
+
+        # Initialize libghdl
+        libghdl_finalize()
+        libghdl_initialize()
+
+        # Collect error messages in memory
+        errorout_memory.Install_Handler()
+
+        libghdl_set_option("--std=08")
+
+        parse.Flag_Parse_Parenthesis.value = True
+
+        # Finish initialization. This will load the standard package.
+        if libghdl_analyze_init_status() != 0:
+            raise LibGHDLException("Error initializing 'libghdl'.")
+
+
+@export
+class Library(VHDLModel_Library):
+    pass
+
+
+@export
+class Document(VHDLModel_Document, GHDLMixin):
+    __ghdlFileID: Any
+    __ghdlSourceFileEntry: Any
+    __ghdlFile: Any
+
+    def __init__(self, path: Path = None, dontParse: bool = False):
+        super().__init__(path)
+        GHDLMixin.__init__(self)
+
+        self.__ghdl_init()
+        if dontParse == False:
+            self.parse()
+
+    def __ghdl_init(self):
+        # Read input file
+        self.__ghdlFileID = name_table.Get_Identifier(str(self.Path))
+        self.__ghdlSourceFileEntry = files_map.Read_Source_File(
+            name_table.Null_Identifier, self.__ghdlFileID
+        )
+        if self.__ghdlSourceFileEntry == files_map.No_Source_File_Entry:
+            raise LibGHDLException("Cannot load file '{!s}'".format(self.Path))
+
+        self.CheckForErrors()
+
+        # Parse input file
+        self.__ghdlFile = sem_lib.Load_File(self.__ghdlSourceFileEntry)
+
+        self.CheckForErrors()
+
+    def parse(self):
+        firstUnit = nodes.Get_First_Design_Unit(self.__ghdlFile)
+
+        for unit in utils.chain_iter(firstUnit):
+            libraryUnit = nodes.Get_Library_Unit(unit)
+            nodeKind = GetIirKindOfNode(libraryUnit)
+
+            if nodeKind == nodes.Iir_Kind.Entity_Declaration:
+                entity = Entity.parse(libraryUnit)
+                self.Entities.append(entity)
+
+            elif nodeKind == nodes.Iir_Kind.Architecture_Body:
+                architecture = Architecture.parse(libraryUnit)
+                self.Architectures.append(architecture)
+
+            elif nodeKind == nodes.Iir_Kind.Package_Declaration:
+                package = Package.parse(libraryUnit)
+                self.Packages.append(package)
+
+            elif nodeKind == nodes.Iir_Kind.Package_Body:
+                packageBody = PackageBody.parse(libraryUnit)
+                self.PackageBodies.append(packageBody)
+
+            elif nodeKind == nodes.Iir_Kind.Context_Declaration:
+                context = Context.parse(libraryUnit)
+                self.Contexts.append(context)
+
+            elif nodeKind == nodes.Iir_Kind.Configuration_Declaration:
+                configuration = Configuration.parse(libraryUnit)
+                self.Configurations.append(configuration)
+
+            else:
+                raise DOMException(
+                    "Unknown design unit kind '{kindName}'({kind}).".format(
+                        kindName=nodeKind.name, kind=nodeKind
+                    )
+                )