git.sur5r.net Git - cc65/blob - src/cc65/codelab.c

   1 /*****************************************************************************/
   2 /*                                                                           */
   3 /*                                  label.c                                  */
   4 /*                                                                           */
   5 /*                           Code label structure                            */
   6 /*                                                                           */
   7 /*                                                                           */
   8 /*                                                                           */
   9 /* (C) 2001     Ullrich von Bassewitz                                        */
  10 /*              Wacholderweg 14                                              */
  11 /*              D-70597 Stuttgart                                            */
  12 /* EMail:       uz@musoftware.de                                             */
  13 /*                                                                           */
  14 /*                                                                           */
  15 /* This software is provided 'as-is', without any expressed or implied       */
  16 /* warranty.  In no event will the authors be held liable for any damages    */
  17 /* arising from the use of this software.                                    */
  18 /*                                                                           */
  19 /* Permission is granted to anyone to use this software for any purpose,     */
  20 /* including commercial applications, and to alter it and redistribute it    */
  21 /* freely, subject to the following restrictions:                            */
  22 /*                                                                           */
  23 /* 1. The origin of this software must not be misrepresented; you must not   */
  24 /*    claim that you wrote the original software. If you use this software   */
  25 /*    in a product, an acknowledgment in the product documentation would be  */
  26 /*    appreciated but is not required.                                       */
  27 /* 2. Altered source versions must be plainly marked as such, and must not   */
  28 /*    be misrepresented as being the original software.                      */
  29 /* 3. This notice may not be removed or altered from any source              */
  30 /*    distribution.                                                          */
  31 /*                                                                           */
  32 /*****************************************************************************/
  33
  34
  35
  36 /* common */
  37 #include "xmalloc.h"
  38
  39 /* cc65 */
  40 #include "label.h"
  41
  42
  43
  44 /*****************************************************************************/
  45 /*                                   Code                                    */
  46 /*****************************************************************************/
  47
  48
  49
  50 CodeLabel* NewCodeLabel (const char* Name, unsigned Hash)
  51 /* Create a new code label, initialize and return it */
  52 {
  53     /* Allocate memory */
  54     CodeLabel* L = xmalloc (sizeof (CodeLabel));
  55
  56     /* Initialize the fields */
  57     L->Next  = 0;
  58     L->Name  = xstrdup (Name);
  59     L->Hash  = Hash;
  60     L->Flags = 0;
  61     L->Owner = 0;
  62     InitCollection (&L->JumpFrom);
  63
  64     /* Return the new label */
  65     return L;
  66 }
  67
  68
  69
  70 void FreeCodeLabel (CodeLabel* L)
  71 /* Free the given code label */
  72 {
  73     /* Free the name */
  74     xfree (L->Name);
  75
  76     /* Free the collection */
  77     DoneCollection (&L->JumpFrom);
  78
  79     /* Delete the struct */
  80     xfree (L);
  81 }
  82
  83
  84
  85 unsigned RemoveLabelRef (CodeLabel* L, const struct CodeEntry* E)
  86 /* Remove a reference to this label, return the number of remaining references */
  87 {
  88     /* Delete the item */
  89     CollDeleteItem (&L->JumpFrom, E);
  90
  91     /* Return the number of remaining references */
  92     return CollCount (&L->JumpFrom);
  93 }
  94
  95
  96
  97 void OutputCodeLabel (FILE* F, const CodeLabel* L)
  98 /* Output the code label to a file */
  99 {
 100     fprintf (F, "%s:\n", L->Name);
 101 }
 102
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 104