modules/up/src/gnug++/SymbolConjunctPtr.Bag.cc

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FUNCTIONS

This source file includes following functions.
  1. error
  2. seek
  3. owns
  4. remove
  5. nof
  6. clear

   1 // This may look like C code, but it is really -*- C++ -*-
   2 /* 
   3 Copyright (C) 1988 Free Software Foundation
   4     written by Doug Lea (dl@rocky.oswego.edu)
   5 
   6 This file is part of the GNU C++ Library.  This library is free
   7 software; you can redistribute it and/or modify it under the terms of
   8 the GNU Library General Public License as published by the Free
   9 Software Foundation; either version 2 of the License, or (at your
  10 option) any later version.  This library is distributed in the hope
  11 that it will be useful, but WITHOUT ANY WARRANTY; without even the
  12 implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
  13 PURPOSE.  See the GNU Library General Public License for more details.
  14 You should have received a copy of the GNU Library General Public
  15 License along with this library; if not, write to the Free Software
  16 Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
  17 */
  18 
  19 #ifdef __GNUG__
  20 #pragma implementation
  21 #endif
  22 #include "config.h"
  23 #include "SymbolConjunctPtr.Bag.h"
  24 #include <builtin.h>
  25 
  26 // error handling
  27 
  28 void SymbolConjunctPtrBag::error(const char* msg)
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  29 {
  30   (*lib_error_handler)("Bag", msg);
  31 }
  32 
  33 
  34 Pix SymbolConjunctPtrBag::seek(SymbolConjunctPtr  item, Pix i)
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  35 {
  36   if (i == 0) 
  37     i = first();
  38   else
  39     next(i);
  40   for (;i != 0 && (!(SymbolConjunctPtrEQ((*this)(i), item))); next(i));
  41   return i;
  42 }
  43 
  44 int SymbolConjunctPtrBag::owns(Pix p)
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  45 {
  46   if (p == 0) return 0;
  47   for (Pix i = first(); i != 0; next(i)) if (i == p) return 1;
  48   return 0;
  49 }
  50 
  51 void SymbolConjunctPtrBag::remove(SymbolConjunctPtr  item)
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  52 {
  53   int i = nof(item);
  54   while (i-- > 0) del(item);
  55 }
  56 
  57 
  58 int SymbolConjunctPtrBag::nof(SymbolConjunctPtr  item)
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  59 {
  60   int n = 0;
  61   for (Pix p = first(); p; next(p)) if (SymbolConjunctPtrEQ((*this)(p), item)) ++n;
  62   return n;
  63 }
  64 
  65 void SymbolConjunctPtrBag::clear()
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  66 {
  67   Pix i = first(); 
  68   while (i != 0)
  69   {
  70     del((*this)(i));
  71     i = first();
  72   }
  73 }
  74 
  75 

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