git.sur5r.net Git - cc65/blob - src/ca65/feature.c

   1 /*****************************************************************************/
   2 /*                                                                           */
   3 /*                                 feature.c                                 */
   4 /*                                                                           */
   5 /*                  Subroutines for the emulation features                   */
   6 /*                                                                           */
   7 /*                                                                           */
   8 /*                                                                           */
   9 /* (C) 2000     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 #include <string.h>
  37
  38 /* ca65 */
  39 #include "global.h"
  40 #include "feature.h"
  41
  42
  43
  44 /*****************************************************************************/
  45 /*                                   Data                                    */
  46 /*****************************************************************************/
  47
  48
  49
  50 /* Names of the features */
  51 static const char* FeatureKeys[FEAT_COUNT] = {
  52     "dollar_is_pc",
  53     "labels_without_colons",
  54     "loose_string_term",
  55     "at_in_identifiers",
  56     "dollar_in_identifiers",
  57     "pc_assignment",
  58 };
  59
  60
  61
  62 /*****************************************************************************/
  63 /*                                   Code                                    */
  64 /*****************************************************************************/
  65
  66
  67
  68 feature_t FindFeature (const char* Key)
  69 /* Find the feature in a table and return the corresponding enum value. If the
  70  * feature is invalid, return FEAT_UNKNOWN.
  71  */
  72 {
  73     feature_t F;
  74
  75     /* This is not time critical, so do a linear search */
  76     for (F = (feature_t) 0; F < FEAT_COUNT; ++F) {
  77         if (strcmp (Key, FeatureKeys[F]) == 0) {
  78             /* Found, index is enum value */
  79             return F;
  80         }
  81     }
  82
  83     /* Not found */
  84     return FEAT_UNKNOWN;
  85 }
  86
  87
  88
  89 feature_t SetFeature (const char* Key)
  90 /* Find the feature and set the corresponding flag if the feature is known.
  91  * In any case, return the feature found. An invalid Key will return
  92  * FEAT_UNKNOWN.
  93  */
  94 {
  95     /* Map the string to an enum value */
  96     feature_t Feature = FindFeature (Key);
  97
  98     /* Set the flags */
  99     switch (Feature) {
 100         case FEAT_DOLLAR_IS_PC:          DollarIsPC     = 1;    break;
 101         case FEAT_LABELS_WITHOUT_COLONS: NoColonLabels  = 1;    break;
 102         case FEAT_LOOSE_STRING_TERM:     LooseStringTerm= 1;    break;
 103         case FEAT_AT_IN_IDENTIFIERS:     AtInIdents     = 1;    break;
 104         case FEAT_DOLLAR_IN_IDENTIFIERS: DollarInIdents = 1;    break;
 105         case FEAT_PC_ASSIGNMENT:         PCAssignment   = 1;    break;
 106         default:                         /* Keep gcc silent */  break;
 107     }
 108
 109     /* Return the value found */
 110     return Feature;
 111 }
 112
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 114