tagmanager/nestlevel.c

   1 /*
   2 *   Copyright (c) 1999-2002, Darren Hiebert
   3 *   Copyright 2009-2011 Nick Treleaven <nick(dot)treleaven(at)btinternet(dot)com>
   4 *
   5 *   This source code is released for free distribution under the terms of the
   6 *   GNU General Public License.
   7 *
   8 *   Defines external interface to scope nesting levels for tags.
   9 */
  10
  11 /*
  12 *   INCLUDE FILES
  13 */
  14 #include "general.h"  /* must always come first */
  15
  16 #include "main.h"
  17 #include "nestlevel.h"
  18
  19 /*
  20 *   FUNCTION DEFINITIONS
  21 */
  22
  23 extern NestingLevels *nestingLevelsNew(void)
  24 {
  25         NestingLevels *nls = xCalloc (1, NestingLevels);
  26         return nls;
  27 }
  28
  29 extern void nestingLevelsFree(NestingLevels *nls)
  30 {
  31         int i;
  32         for (i = 0; i < nls->allocated; i++)
  33                 vStringDelete(nls->levels[i].name);
  34         if (nls->levels) eFree(nls->levels);
  35         eFree(nls);
  36 }
  37
  38 extern void nestingLevelsPush(NestingLevels *nls,
  39         const vString *name, int type)
  40 {
  41         NestingLevel *nl = NULL;
  42
  43         if (nls->n >= nls->allocated)
  44         {
  45                 nls->allocated++;
  46                 nls->levels = xRealloc(nls->levels,
  47                         nls->allocated, NestingLevel);
  48                 nls->levels[nls->n].name = vStringNew();
  49         }
  50         nl = &nls->levels[nls->n];
  51         nls->n++;
  52
  53         vStringCopy(nl->name, name);
  54         nl->type = type;
  55 }
  56
  57 extern void nestingLevelsPop(NestingLevels *nls)
  58 {
  59         const NestingLevel *nl = nestingLevelsGetCurrent(nls);
  60
  61         Assert (nl != NULL);
  62         vStringClear(nl->name);
  63         nls->n--;
  64 }
  65
  66 extern NestingLevel *nestingLevelsGetCurrent(NestingLevels *nls)
  67 {
  68         Assert (nls != NULL);
  69
  70         if (nls->n < 1)
  71                 return NULL;
  72
  73         return &nls->levels[nls->n - 1];
  74 }
  75
  76 /* vi:set tabstop=4 shiftwidth=4: */