#274-Intermediate Code - Abstract Syntaxic Tree

- creation of new package `src.IntermedaiteCode`;
- creation of  module `src.IntermediateCode.ic_ast.py` with minimalist content;
- removing no more useful module Ùtils.ut_tree.py`.

src/FrontEnd/Elaborator/fe_elaborator.py

@@ -28,7 +28,7 @@
 #=============================================================================
 class FEElaborator:
     """
-    Bse class for the Elabioration step of Typee front-End.
+    Base class for the Elaboration step of Typee front-End.
     """    
     #-------------------------------------------------------------------------
     def __init__(self, params) -> None:

src/FrontEnd/Parser/fe_parser.py

@@ -30,7 +30,6 @@
 from FrontEnd.IntermediateCode.fe_icleaf             import FEICLeaf
 from FrontEnd.IntermediateCode.fe_ictree             import FEICTree
 from FrontEnd.Errors.fe_syntax_errors                import FESyntaxErrors
-from builtins import True, False
 
 
 #=============================================================================

src/IntermediateCode/ic_ast.py

@@ -0,0 +1,48 @@
+"""
+Copyright (c) 2019 Philippe Schmouker, Typee project, http://www.typee.ovh
+
+Permission is hereby granted,  free of charge,  to any person obtaining a copy
+of this software and associated documentation files (the "Software"),  to deal
+in the Software without restriction, including  without  limitation the rights
+to use,  copy,  modify,  merge,  publish,  distribute, sublicense, and/or sell
+copies of the Software,  and  to  permit  persons  to  whom  the  Software  is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS",  WITHOUT WARRANTY OF ANY  KIND,  EXPRESS  OR
+IMPLIED,  INCLUDING  BUT  NOT  LIMITED  TO  THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT  SHALL  THE
+AUTHORS  OR  COPYRIGHT  HOLDERS  BE  LIABLE  FOR  ANY CLAIM,  DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  TORT OR OTHERWISE, ARISING FROM,
+OUT  OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+"""
+
+#=============================================================================
+from Utils.Trees.ut_tree_leaf import UTTreeLeaf
+from Utils.Trees.ut_tree_node import UTTreeNode
+from Utils.Trees.ut_tree      import UTTree
+
+
+#=============================================================================
+class ICAst( UTTree ):
+    """
+    The class of Abstract Syntaxic Trees.
+    Those trees are created by the Front-End Parser.
+    They are used by the Front-End Elaborator, when elaborating symbols
+    and types for instance.
+    They are used also by the types checker.
+    FInally, they are used by the Back-End Programming-Language Translators.
+    """   
+    #-------------------------------------------------------------------------
+    def __init__(self) -> None:
+        '''
+        Constructor.
+        '''
+        super().__init__()
+
+    #-------------------------------------------------------------------------
+
+#=====   end of   IntermediateCode.ic_ast   =====#