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[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [gcc/] [ada/] [sinfo-cn.adb] - Blame information for rev 706

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1 706 jeremybenn
------------------------------------------------------------------------------
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--                                                                          --
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--                         GNAT COMPILER COMPONENTS                         --
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--                                                                          --
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--                             S I N F O . C N                              --
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--                                                                          --
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--                                 B o d y                                  --
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--                                                                          --
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--          Copyright (C) 1992-2011, Free Software Foundation, Inc.         --
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--                                                                          --
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-- GNAT is free software;  you can  redistribute it  and/or modify it under --
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-- terms of the  GNU General Public License as published  by the Free Soft- --
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-- ware  Foundation;  either version 3,  or (at your option) any later ver- --
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-- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
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-- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
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-- or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License --
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-- for  more details.  You should have  received  a copy of the GNU General --
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-- Public License  distributed with GNAT; see file COPYING3.  If not, go to --
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-- http://www.gnu.org/licenses for a complete copy of the license.          --
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--                                                                          --
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-- GNAT was originally developed  by the GNAT team at  New York University. --
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-- Extensive contributions were provided by Ada Core Technologies Inc.      --
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--                                                                          --
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------------------------------------------------------------------------------
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--  This child package of Sinfo contains some routines that permit in place
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--  alteration of existing tree nodes by changing the value in the Nkind
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--  field. Since Nkind functions logically in a manner similar to a variant
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--  record discriminant part, such alterations cannot be permitted in a
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--  general manner, but in some specific cases, the fields of related nodes
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--  have been deliberately layed out in a manner that permits such alteration.
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with Atree;  use Atree;
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with Snames; use Snames;
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package body Sinfo.CN is
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   use Atree.Unchecked_Access;
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   --  This package is one of the few packages which is allowed to make direct
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   --  references to tree nodes (since it is in the business of providing a
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   --  higher level of tree access which other clients are expected to use and
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   --  which implements checks).
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   ------------------------------------------------------------
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   -- Change_Character_Literal_To_Defining_Character_Literal --
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   ------------------------------------------------------------
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   procedure Change_Character_Literal_To_Defining_Character_Literal
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     (N : in out Node_Id)
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   is
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   begin
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      Set_Nkind (N, N_Defining_Character_Literal);
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      N := Extend_Node (N);
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   end Change_Character_Literal_To_Defining_Character_Literal;
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   ------------------------------------
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   -- Change_Conversion_To_Unchecked --
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   ------------------------------------
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   procedure Change_Conversion_To_Unchecked (N : Node_Id) is
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   begin
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      Set_Do_Overflow_Check (N, False);
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      Set_Do_Tag_Check (N, False);
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      Set_Do_Length_Check (N, False);
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      Set_Nkind (N, N_Unchecked_Type_Conversion);
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   end Change_Conversion_To_Unchecked;
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   ----------------------------------------------
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   -- Change_Identifier_To_Defining_Identifier --
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   ----------------------------------------------
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   procedure Change_Identifier_To_Defining_Identifier (N : in out Node_Id) is
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   begin
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      Set_Nkind (N, N_Defining_Identifier);
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      N := Extend_Node (N);
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   end Change_Identifier_To_Defining_Identifier;
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   ---------------------------------------------
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   -- Change_Name_To_Procedure_Call_Statement --
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   ---------------------------------------------
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   procedure Change_Name_To_Procedure_Call_Statement (N : Node_Id) is
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   begin
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      --  Case of Indexed component, which is a procedure call with arguments
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      if Nkind (N) = N_Indexed_Component then
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         declare
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            Prefix_Node : constant Node_Id := Prefix (N);
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            Exprs_Node  : constant List_Id := Expressions (N);
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         begin
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            Change_Node (N, N_Procedure_Call_Statement);
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            Set_Name (N, Prefix_Node);
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            Set_Parameter_Associations (N, Exprs_Node);
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         end;
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      --  Case of function call node, which is a really a procedure call
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      elsif Nkind (N) = N_Function_Call then
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         declare
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            Fname_Node  : constant Node_Id := Name (N);
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            Params_List : constant List_Id := Parameter_Associations (N);
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         begin
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            Change_Node (N, N_Procedure_Call_Statement);
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            Set_Name (N, Fname_Node);
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            Set_Parameter_Associations (N, Params_List);
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         end;
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      --  Case of call to attribute that denotes a procedure. Here we just
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      --  leave the attribute reference unchanged.
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      elsif Nkind (N) = N_Attribute_Reference
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        and then Is_Procedure_Attribute_Name (Attribute_Name (N))
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      then
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         null;
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      --  All other cases of names are parameterless procedure calls
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      else
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         declare
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            Name_Node : constant Node_Id := Relocate_Node (N);
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         begin
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            Change_Node (N, N_Procedure_Call_Statement);
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            Set_Name (N, Name_Node);
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         end;
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      end if;
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   end Change_Name_To_Procedure_Call_Statement;
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   --------------------------------------------------------
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   -- Change_Operator_Symbol_To_Defining_Operator_Symbol --
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   --------------------------------------------------------
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   procedure Change_Operator_Symbol_To_Defining_Operator_Symbol
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     (N : in out Node_Id)
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   is
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   begin
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      Set_Nkind (N, N_Defining_Operator_Symbol);
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      Set_Node2 (N, Empty); -- Clear unused Str2 field
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      N := Extend_Node (N);
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   end Change_Operator_Symbol_To_Defining_Operator_Symbol;
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   ----------------------------------------------
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   -- Change_Operator_Symbol_To_String_Literal --
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   ----------------------------------------------
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   procedure Change_Operator_Symbol_To_String_Literal (N : Node_Id) is
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   begin
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      Set_Nkind (N, N_String_Literal);
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      Set_Node1 (N, Empty); -- clear Name1 field
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   end Change_Operator_Symbol_To_String_Literal;
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   ------------------------------------------------
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   -- Change_Selected_Component_To_Expanded_Name --
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   ------------------------------------------------
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   procedure Change_Selected_Component_To_Expanded_Name (N : Node_Id) is
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   begin
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      Set_Nkind (N, N_Expanded_Name);
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      Set_Chars (N, Chars (Selector_Name (N)));
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   end Change_Selected_Component_To_Expanded_Name;
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end Sinfo.CN;

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