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jlechner |
/****************************************************************************
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* *
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* GNAT COMPILER COMPONENTS *
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* *
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* N 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) 1992-2003, 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 2, 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 COPYING. If not, write *
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* to the Free Software Foundation, 51 Franklin Street, Fifth Floor, *
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* Boston, MA 02110-1301, USA. *
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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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Nlists. It also contains the implementations of inlined functions from the
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the package body for Nlists. It was generated manually from nlists.ads and
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nlists.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 is the structure used for the list headers table */
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struct List_Header
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{
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Node_Id first;
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Node_Id last;
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Node_Id parent;
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};
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/* The list headers are stored in an array. The pointer to this array is
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passed as a parameter to gigi and stored in the global variable
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List_Headers_Ptr. */
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extern struct List_Header *List_Headers_Ptr;
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/* The previous and next links for lists are held in two arrays, Next_Node and
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Prev_Node. The pointers to these arrays are passed as parameters to gigi
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and stored in the global variables Prev_Node_Ptr and Next_Node_Ptr. */
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extern Node_Id *Next_Node_Ptr;
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extern Node_Id *Prev_Node_Ptr;
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/* Node List Access Functions */
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static Node_Id First (List_Id);
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INLINE Node_Id
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First (List_Id List)
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{
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return List_Headers_Ptr[List - First_List_Id].first;
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}
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#define First_Non_Pragma nlists__first_non_pragma
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extern Node_Id First_Non_Pragma (Node_Id);
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static Node_Id Last (List_Id);
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INLINE Node_Id
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Last (List_Id List)
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{
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return List_Headers_Ptr[List - First_List_Id].last;
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}
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#define First_Non_Pragma nlists__first_non_pragma
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extern Node_Id First_Non_Pragma (List_Id);
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static Node_Id Next (Node_Id);
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INLINE Node_Id
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Next (Node_Id Node)
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{
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return Next_Node_Ptr[Node - First_Node_Id];
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}
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#define Next_Non_Pragma nlists__next_non_pragma
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extern Node_Id Next_Non_Pragma (List_Id);
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static Node_Id Prev (Node_Id);
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INLINE Node_Id
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Prev (Node_Id Node)
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{
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return Prev_Node_Ptr[Node - First_Node_Id];
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}
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#define Prev_Non_Pragma nlists__prev_non_pragma
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extern Node_Id Prev_Non_Pragma (Node_Id);
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static Boolean Is_Empty_List (List_Id);
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static Boolean Is_Non_Empty_List (List_Id);
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static Boolean Is_List_Member (Node_Id);
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static List_Id List_Containing (Node_Id);
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INLINE Boolean
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Is_Empty_List (List_Id Id)
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{
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return (First (Id) == Empty);
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}
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INLINE Boolean
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Is_Non_Empty_List (List_Id Id)
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{
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return (Present (Id) && First (Id) != Empty);
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}
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INLINE Boolean
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Is_List_Member (Node_Id Node)
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{
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return Nodes_Ptr[Node - First_Node_Id].U.K.in_list;
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}
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INLINE List_Id
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List_Containing (Node_Id Node)
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{
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return Nodes_Ptr[Node - First_Node_Id].V.NX.link;
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}
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