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 \
  21     ((CURRENT_HINTS & HINT_FEATURE_MASK) >> HINT_FEATURE_SHIFT)
  22
  23 #define FEATURE_IS_ENABLED(name)                                        \
  24         ((CURRENT_HINTS                                                  \
  25            & HINT_LOCALIZE_HH)                                            \
  26             && Perl_feature_is_enabled(aTHX_ STR_WITH_LEN(name)))
  27 /* The longest string we pass in.  */
  28 #define MAX_FEATURE_LEN (sizeof("evalbytes")-1)
  29
  30 #define FEATURE_SAY_IS_ENABLED \
  31     ( \
  32         (CURRENT_FEATURE_BUNDLE >= FEATURE_BUNDLE_510 && \
  33          CURRENT_FEATURE_BUNDLE <= FEATURE_BUNDLE_515) \
  34      || (CURRENT_FEATURE_BUNDLE == FEATURE_BUNDLE_CUSTOM && \
  35          FEATURE_IS_ENABLED("say")) \
  36     )
  37
  38 #define FEATURE_STATE_IS_ENABLED \
  39     ( \
  40         (CURRENT_FEATURE_BUNDLE >= FEATURE_BUNDLE_510 && \
  41          CURRENT_FEATURE_BUNDLE <= FEATURE_BUNDLE_515) \
  42      || (CURRENT_FEATURE_BUNDLE == FEATURE_BUNDLE_CUSTOM && \
  43          FEATURE_IS_ENABLED("state")) \
  44     )
  45
  46 #define FEATURE_SWITCH_IS_ENABLED \
  47     ( \
  48         (CURRENT_FEATURE_BUNDLE >= FEATURE_BUNDLE_510 && \
  49          CURRENT_FEATURE_BUNDLE <= FEATURE_BUNDLE_515) \
  50      || (CURRENT_FEATURE_BUNDLE == FEATURE_BUNDLE_CUSTOM && \
  51          FEATURE_IS_ENABLED("switch")) \
  52     )
  53
  54 #define FEATURE_EVALBYTES_IS_ENABLED \
  55     ( \
  56         CURRENT_FEATURE_BUNDLE == FEATURE_BUNDLE_515 \
  57      || (CURRENT_FEATURE_BUNDLE == FEATURE_BUNDLE_CUSTOM && \
  58          FEATURE_IS_ENABLED("evalbytes")) \
  59     )
  60
  61 #define FEATURE_ARYBASE_IS_ENABLED \
  62     ( \
  63         CURRENT_FEATURE_BUNDLE <= FEATURE_BUNDLE_511 \
  64      || (CURRENT_FEATURE_BUNDLE == FEATURE_BUNDLE_CUSTOM && \
  65          FEATURE_IS_ENABLED("arybase")) \
  66     )
  67
  68 #define FEATURE___SUB___IS_ENABLED \
  69     ( \
  70         CURRENT_FEATURE_BUNDLE == FEATURE_BUNDLE_515 \
  71      || (CURRENT_FEATURE_BUNDLE == FEATURE_BUNDLE_CUSTOM && \
  72          FEATURE_IS_ENABLED("__SUB__")) \
  73     )
  74
  75 #define FEATURE_UNIEVAL_IS_ENABLED \
  76     ( \
  77         CURRENT_FEATURE_BUNDLE == FEATURE_BUNDLE_515 \
  78      || (CURRENT_FEATURE_BUNDLE == FEATURE_BUNDLE_CUSTOM && \
  79          FEATURE_IS_ENABLED("unieval")) \
  80     )
  81
  82 #define FEATURE_UNICODE_IS_ENABLED \
  83     ( \
  84         (CURRENT_FEATURE_BUNDLE >= FEATURE_BUNDLE_511 && \
  85          CURRENT_FEATURE_BUNDLE <= FEATURE_BUNDLE_515) \
  86      || (CURRENT_FEATURE_BUNDLE == FEATURE_BUNDLE_CUSTOM && \
  87          FEATURE_IS_ENABLED("unicode")) \
  88     )
  89
  90
  91 #endif /* PERL_CORE or PERL_EXT */
  92
  93 #ifdef PERL_IN_OP_C
  94 PERL_STATIC_INLINE void
  95 S_enable_feature_bundle(pTHX_ SV *ver)
  96 {
  97     SV *comp_ver = sv_newmortal();
  98     PL_hints = (PL_hints &~ HINT_FEATURE_MASK)
  99              | (
 100                   (sv_setnv(comp_ver, 5.015),
 101                    vcmp(ver, upg_version(comp_ver, FALSE)) >= 0)
 102                         ? FEATURE_BUNDLE_515 :
 103                   (sv_setnv(comp_ver, 5.011),
 104                    vcmp(ver, upg_version(comp_ver, FALSE)) >= 0)
 105                         ? FEATURE_BUNDLE_511 :
 106                   (sv_setnv(comp_ver, 5.009005),
 107                    vcmp(ver, upg_version(comp_ver, FALSE)) >= 0)
 108                         ? FEATURE_BUNDLE_510 :
 109                           FEATURE_BUNDLE_DEFAULT
 110                ) << HINT_FEATURE_SHIFT;
 111     /* special case */
 112     assert(PL_curcop == &PL_compiling);
 113     if (FEATURE_UNICODE_IS_ENABLED) PL_hints |=  HINT_UNI_8_BIT;
 114     else                            PL_hints &= ~HINT_UNI_8_BIT;
 115 }
 116 #endif /* PERL_IN_OP_C */
 117
 118 /* ex: set ro: */