feature.h

   1 /* -*- buffer-read-only: t -*-
   2    !!!!!!!   DO NOT EDIT THIS FILE   !!!!!!!
   3    This file is built by regen/feature.pl.
   4    Any changes made here will be lost!
   5  */
   6
   7
   8 #if defined(PERL_CORE) || defined (PERL_EXT)
   9
  10 #define HINT_FEATURE_SHIFT      26
  11
  12 #define FEATURE_BUNDLE_DEFAULT  0
  13 #define FEATURE_BUNDLE_510      1
  14 #define FEATURE_BUNDLE_511      2
  15 #define FEATURE_BUNDLE_515      3
  16 #define FEATURE_BUNDLE_CUSTOM   (HINT_FEATURE_MASK >> HINT_FEATURE_SHIFT)
  17
  18 #define CURRENT_HINTS \
  19     (PL_curcop == &PL_compiling ? PL_hints : PL_curcop->cop_hints)
  20 #define CURRENT_FEATURE_BUNDLE  (CURRENT_HINTS >> HINT_FEATURE_SHIFT)
  21
  22 #define FEATURE_IS_ENABLED(name)                                        \
  23         ((CURRENT_HINTS                                                  \
  24            & HINT_LOCALIZE_HH)                                            \
  25             && Perl_feature_is_enabled(aTHX_ STR_WITH_LEN(name)))
  26 /* The longest string we pass in.  */
  27 #define MAX_FEATURE_LEN (sizeof("evalbytes")-1)
  28
  29 #define FEATURE_SAY_IS_ENABLED \
  30     ( \
  31         (CURRENT_FEATURE_BUNDLE >= FEATURE_BUNDLE_510 && \
  32          CURRENT_FEATURE_BUNDLE <= FEATURE_BUNDLE_515) \
  33      || (CURRENT_FEATURE_BUNDLE == FEATURE_BUNDLE_CUSTOM && \
  34          FEATURE_IS_ENABLED("say")) \
  35     )
  36
  37 #define FEATURE_STATE_IS_ENABLED \
  38     ( \
  39         (CURRENT_FEATURE_BUNDLE >= FEATURE_BUNDLE_510 && \
  40          CURRENT_FEATURE_BUNDLE <= FEATURE_BUNDLE_515) \
  41      || (CURRENT_FEATURE_BUNDLE == FEATURE_BUNDLE_CUSTOM && \
  42          FEATURE_IS_ENABLED("state")) \
  43     )
  44
  45 #define FEATURE_SWITCH_IS_ENABLED \
  46     ( \
  47         (CURRENT_FEATURE_BUNDLE >= FEATURE_BUNDLE_510 && \
  48          CURRENT_FEATURE_BUNDLE <= FEATURE_BUNDLE_515) \
  49      || (CURRENT_FEATURE_BUNDLE == FEATURE_BUNDLE_CUSTOM && \
  50          FEATURE_IS_ENABLED("switch")) \
  51     )
  52
  53 #define FEATURE_EVALBYTES_IS_ENABLED \
  54     ( \
  55         CURRENT_FEATURE_BUNDLE == FEATURE_BUNDLE_515 \
  56      || (CURRENT_FEATURE_BUNDLE == FEATURE_BUNDLE_CUSTOM && \
  57          FEATURE_IS_ENABLED("evalbytes")) \
  58     )
  59
  60 #define FEATURE_ARYBASE_IS_ENABLED \
  61     ( \
  62         CURRENT_FEATURE_BUNDLE <= FEATURE_BUNDLE_511 \
  63      || (CURRENT_FEATURE_BUNDLE == FEATURE_BUNDLE_CUSTOM && \
  64          FEATURE_IS_ENABLED("arybase")) \
  65     )
  66
  67 #define FEATURE___SUB___IS_ENABLED \
  68     ( \
  69         CURRENT_FEATURE_BUNDLE == FEATURE_BUNDLE_515 \
  70      || (CURRENT_FEATURE_BUNDLE == FEATURE_BUNDLE_CUSTOM && \
  71          FEATURE_IS_ENABLED("__SUB__")) \
  72     )
  73
  74 #define FEATURE_UNIEVAL_IS_ENABLED \
  75     ( \
  76         CURRENT_FEATURE_BUNDLE == FEATURE_BUNDLE_515 \
  77      || (CURRENT_FEATURE_BUNDLE == FEATURE_BUNDLE_CUSTOM && \
  78          FEATURE_IS_ENABLED("unieval")) \
  79     )
  80
  81 #define FEATURE_UNICODE_IS_ENABLED \
  82     ( \
  83         (CURRENT_FEATURE_BUNDLE >= FEATURE_BUNDLE_511 && \
  84          CURRENT_FEATURE_BUNDLE <= FEATURE_BUNDLE_515) \
  85      || (CURRENT_FEATURE_BUNDLE == FEATURE_BUNDLE_CUSTOM && \
  86          FEATURE_IS_ENABLED("unicode")) \
  87     )
  88
  89
  90 #endif /* PERL_CORE or PERL_EXT */
  91
  92 #ifdef PERL_IN_OP_C
  93 PERL_STATIC_INLINE void
  94 S_enable_feature_bundle(pTHX_ SV *ver)
  95 {
  96     SV *comp_ver = sv_newmortal();
  97     PL_hints = (PL_hints &~ HINT_FEATURE_MASK)
  98              | (
  99                   (sv_setnv(comp_ver, 5.015),
 100                    vcmp(ver, upg_version(comp_ver, FALSE)) >= 0)
 101                         ? FEATURE_BUNDLE_515 :
 102                   (sv_setnv(comp_ver, 5.011),
 103                    vcmp(ver, upg_version(comp_ver, FALSE)) >= 0)
 104                         ? FEATURE_BUNDLE_511 :
 105                   (sv_setnv(comp_ver, 5.009005),
 106                    vcmp(ver, upg_version(comp_ver, FALSE)) >= 0)
 107                         ? FEATURE_BUNDLE_510 :
 108                           FEATURE_BUNDLE_DEFAULT
 109                ) << HINT_FEATURE_SHIFT;
 110     /* special case */
 111     assert(PL_curcop == &PL_compiling);
 112     if (FEATURE_UNICODE_IS_ENABLED) PL_hints |=  HINT_UNI_8_BIT;
 113     else                            PL_hints &= ~HINT_UNI_8_BIT;
 114 }
 115 #endif /* PERL_IN_OP_C */
 116
 117 /* ex: set ro: */