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) 2000-2004 Ullrich von Bassewitz                                       */
  10 /*               Römerstraße 52                                              */
  11 /*               D-70794 Filderstadt                                         */
  12 /* EMail:        uz@cc65.org                                                 */
  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     "loose_char_term",
  56     "at_in_identifiers",
  57     "dollar_in_identifiers",
  58     "leading_dot_in_identifiers",
  59     "pc_assignment",
  60     "missing_char_term",
  61     "ubiquitous_idents",
  62 };
  63
  64
  65
  66 /*****************************************************************************/
  67 /*                                   Code                                    */
  68 /*****************************************************************************/
  69
  70
  71
  72 feature_t FindFeature (const char* Key)
  73 /* Find the feature in a table and return the corresponding enum value. If the
  74  * feature is invalid, return FEAT_UNKNOWN.
  75  */
  76 {
  77     feature_t F;
  78
  79     /* This is not time critical, so do a linear search */
  80     for (F = (feature_t) 0; F < FEAT_COUNT; ++F) {
  81         if (strcmp (Key, FeatureKeys[F]) == 0) {
  82             /* Found, index is enum value */
  83             return F;
  84         }
  85     }
  86
  87     /* Not found */
  88     return FEAT_UNKNOWN;
  89 }
  90
  91
  92
  93 feature_t SetFeature (const char* Key)
  94 /* Find the feature and set the corresponding flag if the feature is known.
  95  * In any case, return the feature found. An invalid Key will return
  96  * FEAT_UNKNOWN.
  97  */
  98 {
  99     /* Map the string to an enum value */
 100     feature_t Feature = FindFeature (Key);
 101
 102     /* Set the flags */
 103     switch (Feature) {
 104         case FEAT_DOLLAR_IS_PC:               DollarIsPC        = 1;    break;
 105         case FEAT_LABELS_WITHOUT_COLONS:      NoColonLabels     = 1;    break;
 106         case FEAT_LOOSE_STRING_TERM:          LooseStringTerm   = 1;    break;
 107         case FEAT_LOOSE_CHAR_TERM:            LooseCharTerm     = 1;    break;
 108         case FEAT_AT_IN_IDENTIFIERS:          AtInIdents        = 1;    break;
 109         case FEAT_DOLLAR_IN_IDENTIFIERS:      DollarInIdents    = 1;    break;
 110         case FEAT_LEADING_DOT_IN_IDENTIFIERS: LeadingDotInIdents= 1;    break;
 111         case FEAT_PC_ASSIGNMENT:              PCAssignment      = 1;    break;
 112         case FEAT_MISSING_CHAR_TERM:          MissingCharTerm   = 1;    break;
 113         case FEAT_UBIQUITOUS_IDENTS:          UbiquitousIdents  = 1;    break;
 114         default:                         /* Keep gcc silent */          break;
 115     }
 116
 117     /* Return the value found */
 118     return Feature;
 119 }
 120
 121
 122