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[/] [openrisc/] [trunk/] [gnu-src/] [gcc-4.5.1/] [gcc/] [ada/] [elists.h] - Blame information for rev 281

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1 281 jeremybenn
/****************************************************************************
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 *                                                                          *
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 *                         GNAT COMPILER COMPONENTS                         *
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 *                                                                          *
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 *                               E L I S T S                                *
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 *                                                                          *
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 *                              C Header File                               *
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 *                                                                          *
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 *            Copyright (C) 1992-2007, 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 is the C header corresponding to the Ada package specification for
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   Elists. It also contains the implementations of inlined functions from the
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   package body for Elists.  It was generated manually from elists.ads and
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   elists.adb and must be kept synchronized with changes in these files.
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   Note that only routines for reading the tree are included, since the
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   tree transformer is not supposed to modify the tree in any way. */
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/*  The following are the structures used to hold element lists */
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struct Elist_Header
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{
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  Elmt_Id first;
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  Elmt_Id last;
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};
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struct Elmt_Item
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{
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  Node_Id node;
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  Int next;
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};
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/* The element list headers and element descriptors themselves are stored in
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   two arrays. The pointers to these arrays are passed as a parameter to the
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   tree transformer procedure and stored in the global variables Elists_Ptr
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   and Elmts_Ptr.  */
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extern struct Elist_Header *Elists_Ptr;
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extern struct Elmt_Item *Elmts_Ptr;
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/* Element List Access Functions:  */
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static Node_Id Node             (Elmt_Id);
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static Elmt_Id First_Elmt       (Elist_Id);
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static Elmt_Id Last_Elmt        (Elist_Id);
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static Elmt_Id Next_Elmt        (Elmt_Id);
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static Boolean Is_Empty_Elmt_List (Elist_Id);
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INLINE Node_Id
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Node (Elmt_Id Elmt)
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{
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  return Elmts_Ptr[Elmt - First_Elmt_Id].node;
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}
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INLINE Elmt_Id
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First_Elmt (Elist_Id List)
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{
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  return Elists_Ptr[List - First_Elist_Id].first;
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}
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INLINE Elmt_Id
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Last_Elmt (Elist_Id List)
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{
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  return Elists_Ptr[List - First_Elist_Id].last;
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}
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INLINE Elmt_Id
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Next_Elmt (Elmt_Id Node)
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{
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  Int N = Elmts_Ptr[Node - First_Elmt_Id].next;
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  if (IN (N, Elist_Range))
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    return No_Elmt;
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  else
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    return N;
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}
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INLINE Boolean
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Is_Empty_Elmt_List (Elist_Id Id)
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{
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  return Elists_Ptr[Id - First_Elist_Id].first == No_Elmt;
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}

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