perldelta: close setting $! is a bugfix
[perl.git] / 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 /* Avoid using ... && Perl_feature_is_enabled(...) as that triggers a bug in
24    the HP-UX cc on PA-RISC */
25 #define FEATURE_IS_ENABLED(name)                                        \
26         ((CURRENT_HINTS                                                  \
27            & HINT_LOCALIZE_HH)                                            \
28             ? Perl_feature_is_enabled(aTHX_ STR_WITH_LEN(name)) : FALSE)
29 /* The longest string we pass in.  */
30 #define MAX_FEATURE_LEN (sizeof("postderef_qq")-1)
31
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
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_BITWISE_IS_ENABLED \
64     ( \
65         CURRENT_FEATURE_BUNDLE == FEATURE_BUNDLE_CUSTOM && \
66          FEATURE_IS_ENABLED("bitwise") \
67     )
68
69 #define FEATURE_EVALBYTES_IS_ENABLED \
70     ( \
71         CURRENT_FEATURE_BUNDLE == FEATURE_BUNDLE_515 \
72      || (CURRENT_FEATURE_BUNDLE == FEATURE_BUNDLE_CUSTOM && \
73          FEATURE_IS_ENABLED("evalbytes")) \
74     )
75
76 #define FEATURE_POSTDEREF_IS_ENABLED \
77     ( \
78         CURRENT_FEATURE_BUNDLE == FEATURE_BUNDLE_CUSTOM && \
79          FEATURE_IS_ENABLED("postderef") \
80     )
81
82 #define FEATURE_ARYBASE_IS_ENABLED \
83     ( \
84         CURRENT_FEATURE_BUNDLE <= FEATURE_BUNDLE_511 \
85      || (CURRENT_FEATURE_BUNDLE == FEATURE_BUNDLE_CUSTOM && \
86          FEATURE_IS_ENABLED("arybase")) \
87     )
88
89 #define FEATURE_SIGNATURES_IS_ENABLED \
90     ( \
91         CURRENT_FEATURE_BUNDLE == FEATURE_BUNDLE_CUSTOM && \
92          FEATURE_IS_ENABLED("signatures") \
93     )
94
95 #define FEATURE___SUB___IS_ENABLED \
96     ( \
97         CURRENT_FEATURE_BUNDLE == FEATURE_BUNDLE_515 \
98      || (CURRENT_FEATURE_BUNDLE == FEATURE_BUNDLE_CUSTOM && \
99          FEATURE_IS_ENABLED("__SUB__")) \
100     )
101
102 #define FEATURE_REFALIASING_IS_ENABLED \
103     ( \
104         CURRENT_FEATURE_BUNDLE == FEATURE_BUNDLE_CUSTOM && \
105          FEATURE_IS_ENABLED("refaliasing") \
106     )
107
108 #define FEATURE_LEXSUBS_IS_ENABLED \
109     ( \
110         CURRENT_FEATURE_BUNDLE == FEATURE_BUNDLE_CUSTOM && \
111          FEATURE_IS_ENABLED("lexsubs") \
112     )
113
114 #define FEATURE_POSTDEREF_QQ_IS_ENABLED \
115     ( \
116         CURRENT_FEATURE_BUNDLE == FEATURE_BUNDLE_CUSTOM && \
117          FEATURE_IS_ENABLED("postderef_qq") \
118     )
119
120 #define FEATURE_UNIEVAL_IS_ENABLED \
121     ( \
122         CURRENT_FEATURE_BUNDLE == FEATURE_BUNDLE_515 \
123      || (CURRENT_FEATURE_BUNDLE == FEATURE_BUNDLE_CUSTOM && \
124          FEATURE_IS_ENABLED("unieval")) \
125     )
126
127 #define FEATURE_UNICODE_IS_ENABLED \
128     ( \
129         (CURRENT_FEATURE_BUNDLE >= FEATURE_BUNDLE_511 && \
130          CURRENT_FEATURE_BUNDLE <= FEATURE_BUNDLE_515) \
131      || (CURRENT_FEATURE_BUNDLE == FEATURE_BUNDLE_CUSTOM && \
132          FEATURE_IS_ENABLED("unicode")) \
133     )
134
135
136 #endif /* PERL_CORE or PERL_EXT */
137
138 #ifdef PERL_IN_OP_C
139 PERL_STATIC_INLINE void
140 S_enable_feature_bundle(pTHX_ SV *ver)
141 {
142     SV *comp_ver = sv_newmortal();
143     PL_hints = (PL_hints &~ HINT_FEATURE_MASK)
144              | (
145                   (sv_setnv(comp_ver, 5.015),
146                    vcmp(ver, upg_version(comp_ver, FALSE)) >= 0)
147                         ? FEATURE_BUNDLE_515 :
148                   (sv_setnv(comp_ver, 5.011),
149                    vcmp(ver, upg_version(comp_ver, FALSE)) >= 0)
150                         ? FEATURE_BUNDLE_511 :
151                   (sv_setnv(comp_ver, 5.009005),
152                    vcmp(ver, upg_version(comp_ver, FALSE)) >= 0)
153                         ? FEATURE_BUNDLE_510 :
154                           FEATURE_BUNDLE_DEFAULT
155                ) << HINT_FEATURE_SHIFT;
156     /* special case */
157     assert(PL_curcop == &PL_compiling);
158     if (FEATURE_UNICODE_IS_ENABLED) PL_hints |=  HINT_UNI_8_BIT;
159     else                            PL_hints &= ~HINT_UNI_8_BIT;
160 }
161 #endif /* PERL_IN_OP_C */
162
163 /* ex: set ro: */