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Hide postderef behind the feature feature
[perl5.git] / feature.h
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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
2b9e0ab7 16#define FEATURE_BUNDLE_CUSTOM (HINT_FEATURE_MASK >> HINT_FEATURE_SHIFT)
f2c01b15 17
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18#define CURRENT_HINTS \
19 (PL_curcop == &PL_compiling ? PL_hints : PL_curcop->cop_hints)
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20#define CURRENT_FEATURE_BUNDLE \
21 ((CURRENT_HINTS & HINT_FEATURE_MASK) >> HINT_FEATURE_SHIFT)
d1fd0100 22
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23/* Avoid using ... && Perl_feature_is_enabled(...) as that triggers a bug in
24 the HP-UX cc on PA-RISC */
7d058bc9 25#define FEATURE_IS_ENABLED(name) \
ef744b29 26 ((CURRENT_HINTS \
7d058bc9 27 & HINT_LOCALIZE_HH) \
fc4b5f72 28 ? Perl_feature_is_enabled(aTHX_ STR_WITH_LEN(name)) : FALSE)
7d058bc9 29/* The longest string we pass in. */
1b6e8741 30#define MAX_FEATURE_LEN (sizeof("evalbytes")-1)
7d058bc9 31
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32#define FEATURE_FC_IS_ENABLED \
33 ( \
34 CURRENT_FEATURE_BUNDLE == FEATURE_BUNDLE_515 \
35 || (CURRENT_FEATURE_BUNDLE == FEATURE_BUNDLE_CUSTOM && \
36 FEATURE_IS_ENABLED("fc")) \
37 )
38
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39#define FEATURE_SAY_IS_ENABLED \
40 ( \
41 (CURRENT_FEATURE_BUNDLE >= FEATURE_BUNDLE_510 && \
42 CURRENT_FEATURE_BUNDLE <= FEATURE_BUNDLE_515) \
43 || (CURRENT_FEATURE_BUNDLE == FEATURE_BUNDLE_CUSTOM && \
44 FEATURE_IS_ENABLED("say")) \
45 )
46
47#define FEATURE_STATE_IS_ENABLED \
48 ( \
49 (CURRENT_FEATURE_BUNDLE >= FEATURE_BUNDLE_510 && \
50 CURRENT_FEATURE_BUNDLE <= FEATURE_BUNDLE_515) \
51 || (CURRENT_FEATURE_BUNDLE == FEATURE_BUNDLE_CUSTOM && \
52 FEATURE_IS_ENABLED("state")) \
53 )
54
55#define FEATURE_SWITCH_IS_ENABLED \
56 ( \
57 (CURRENT_FEATURE_BUNDLE >= FEATURE_BUNDLE_510 && \
58 CURRENT_FEATURE_BUNDLE <= FEATURE_BUNDLE_515) \
59 || (CURRENT_FEATURE_BUNDLE == FEATURE_BUNDLE_CUSTOM && \
60 FEATURE_IS_ENABLED("switch")) \
61 )
62
63#define FEATURE_EVALBYTES_IS_ENABLED \
64 ( \
65 CURRENT_FEATURE_BUNDLE == FEATURE_BUNDLE_515 \
66 || (CURRENT_FEATURE_BUNDLE == FEATURE_BUNDLE_CUSTOM && \
67 FEATURE_IS_ENABLED("evalbytes")) \
68 )
69
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70#define FEATURE_POSTDEREF_IS_ENABLED \
71 ( \
72 CURRENT_FEATURE_BUNDLE == FEATURE_BUNDLE_CUSTOM && \
73 FEATURE_IS_ENABLED("postderef") \
74 )
75
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76#define FEATURE_ARYBASE_IS_ENABLED \
77 ( \
beda0318 78 CURRENT_FEATURE_BUNDLE <= FEATURE_BUNDLE_511 \
03222170 79 || (CURRENT_FEATURE_BUNDLE == FEATURE_BUNDLE_CUSTOM && \
3fff3427 80 FEATURE_IS_ENABLED("arybase")) \
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81 )
82
83#define FEATURE___SUB___IS_ENABLED \
84 ( \
85 CURRENT_FEATURE_BUNDLE == FEATURE_BUNDLE_515 \
86 || (CURRENT_FEATURE_BUNDLE == FEATURE_BUNDLE_CUSTOM && \
87 FEATURE_IS_ENABLED("__SUB__")) \
88 )
89
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90#define FEATURE_LEXSUBS_IS_ENABLED \
91 ( \
92 CURRENT_FEATURE_BUNDLE == FEATURE_BUNDLE_CUSTOM && \
93 FEATURE_IS_ENABLED("lexsubs") \
94 )
95
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96#define FEATURE_UNIEVAL_IS_ENABLED \
97 ( \
98 CURRENT_FEATURE_BUNDLE == FEATURE_BUNDLE_515 \
99 || (CURRENT_FEATURE_BUNDLE == FEATURE_BUNDLE_CUSTOM && \
100 FEATURE_IS_ENABLED("unieval")) \
101 )
102
103#define FEATURE_UNICODE_IS_ENABLED \
104 ( \
105 (CURRENT_FEATURE_BUNDLE >= FEATURE_BUNDLE_511 && \
106 CURRENT_FEATURE_BUNDLE <= FEATURE_BUNDLE_515) \
107 || (CURRENT_FEATURE_BUNDLE == FEATURE_BUNDLE_CUSTOM && \
108 FEATURE_IS_ENABLED("unicode")) \
109 )
110
111
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112#endif /* PERL_CORE or PERL_EXT */
113
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114#ifdef PERL_IN_OP_C
115PERL_STATIC_INLINE void
116S_enable_feature_bundle(pTHX_ SV *ver)
117{
118 SV *comp_ver = sv_newmortal();
119 PL_hints = (PL_hints &~ HINT_FEATURE_MASK)
120 | (
121 (sv_setnv(comp_ver, 5.015),
122 vcmp(ver, upg_version(comp_ver, FALSE)) >= 0)
123 ? FEATURE_BUNDLE_515 :
124 (sv_setnv(comp_ver, 5.011),
125 vcmp(ver, upg_version(comp_ver, FALSE)) >= 0)
126 ? FEATURE_BUNDLE_511 :
127 (sv_setnv(comp_ver, 5.009005),
128 vcmp(ver, upg_version(comp_ver, FALSE)) >= 0)
129 ? FEATURE_BUNDLE_510 :
130 FEATURE_BUNDLE_DEFAULT
131 ) << HINT_FEATURE_SHIFT;
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132 /* special case */
133 assert(PL_curcop == &PL_compiling);
134 if (FEATURE_UNICODE_IS_ENABLED) PL_hints |= HINT_UNI_8_BIT;
135 else PL_hints &= ~HINT_UNI_8_BIT;
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136}
137#endif /* PERL_IN_OP_C */
138
f2c01b15 139/* ex: set ro: */