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-.. _REF:Style:
-
-Coding Style
-############
-
-Ada subset: use only a simple (VHDL like) subset of Ada: no tasking, no
-controlled types... VHDL users should easily understand that subset.
-Allowed Ada95 features: the standard library, child packages.
-Use assertions.
-
-We try to follow the 'GNU Coding Standards' when possible: comments before
-declarations, one space at the end of sentences, finish sentences with a dot.
-But: 2 spaces for indentation in code blocks.
-
-No trailing spaces, no TAB (HT).
-
-Subprograms must have a comment before to describe them, like:
-
-.. code-block:: Ada
-	 
-   --  Analyze the concurrent statements of PARENT.
-   procedure Sem_Concurrent_Statement_Chain (Parent : Iir);
-
-The line before the comment must be a blank line (unless this is the first
-declaration). Don't repeat the comment before the subprogram body.
-
-* For subprograms:
-
-  1. Declare on one line when possible:
-	
-     .. code-block:: Ada
-  
-        function Translate_Static_Aggregate (Aggr : Iir) return O_Cnode
-  
-  2. If not possible, put the return on the next line:
-	
-     .. code-block:: Ada
-  
-        function Translate_Static_String (Str_Type : Iir; Str_Ident : Name_Id)
-                                         return O_Cnode
-  
-  3. If not possible, put parameters and return on the next line:
-	
-     .. code-block:: Ada
-  
-        function Create_String_Literal_Var_Inner
-          (Str : Iir; Element_Type : Iir; Str_Type : O_Tnode) return Var_Type
-  
-  4. If not possible, return on the next line:
-	
-     .. code-block:: Ada
-  
-        function Translate_Shortcut_Operator
-          (Imp : Iir_Implicit_Function_Declaration; Left, Right : Iir)
-          return O_Enode
-  
-  5. If not possible, one parameter per line, just after subprogram name:
-	
-     .. code-block:: Ada
-  
-        procedure Translate_Static_Aggregate_1 (List : in out O_Array_Aggr_List;
-                                                Aggr : Iir;
-                                                Info : Iir;
-                                                El_Type : Iir)
-
-  6. If not possible, add a return after subprogram name:
-	
-     .. code-block:: Ada
-  
-        function Translate_Predefined_TF_Array_Element
-          (Op : Predefined_Boolean_Logical;
-           Left, Right : Iir;
-           Res_Type : Iir;
-           Loc : Iir)
-          return O_Enode
-  
-  7. If not possible, ask yourself what is wrong!  Shorten a name.
-
-* Rule for the 'is': on a new line only if the declarative part is not empty:
-	
-     .. code-block:: Ada
-  
-        procedure Translate_Assign (Target : Mnode; Expr : Iir; Target_Type : Iir)
-        is
-          Val : O_Enode;
-        begin
-				
-  vs.
-	
-     .. code-block:: Ada
-  
-        function Translate_Static_Range_Dir (Expr : Iir) return O_Cnode is
-        begin
-
-  If the parameter line is too long with the 'is', put in on a separate line:
-	
-     .. code-block:: Ada
-  
-        procedure Predeclare_Scope_Type
-          (Scope : in out Var_Scope_Type; Name : O_Ident) is
-
-* Generic instantiation: put the generic actual part on a new line:
-	
-     .. code-block:: Ada
-  
-        procedure Free is new Ada.Unchecked_Deallocation
-          (Action_List, Action_List_Acc);
-
-* For if/then statement:
-
-  1. 'then' on the same line:
-	
-     .. code-block:: Ada
-  
-        if Get_Expr_Staticness (Decl) = Locally then
-  
-  2. If not possible, 'then' is alone on its line aligned with the 'if':
-	
-     .. code-block:: Ada
-  
-        if Expr = Null_Iir
-          or else Get_Kind (Expr) = Iir_Kind_Overflow_Literal
-        then
-  
-  3. For a multiline condition, 'or else' and 'and then' should start lines.
-
-* 'Local' variable declaration:
-  Do not initialize variables, constants must be declared before variables:
-	
-     .. code-block:: Ada
-  
-        is
-          N_Info : constant Iir := Get_Sub_Aggregate_Info (Info);
-          Assoc  : Iir;
-          Sub    : Iir;
-        begin
-				
-  If the initialization expression has a side effect (such as allocation), do
-  not use a constant.