1 | /* sv.h |
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2 | * |
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3 | * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
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4 | * 2000, 2001, 2002, 2003, by Larry Wall and others |
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5 | * |
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6 | * You may distribute under the terms of either the GNU General Public |
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7 | * License or the Artistic License, as specified in the README file. |
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8 | * |
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9 | */ |
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10 | |
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11 | #ifdef sv_flags |
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12 | #undef sv_flags /* Convex has this in <signal.h> for sigvec() */ |
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13 | #endif |
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14 | |
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15 | /* |
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16 | =head1 SV Flags |
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17 | |
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18 | =for apidoc AmU||svtype |
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19 | An enum of flags for Perl types. These are found in the file B<sv.h> |
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20 | in the C<svtype> enum. Test these flags with the C<SvTYPE> macro. |
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21 | |
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22 | =for apidoc AmU||SVt_PV |
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23 | Pointer type flag for scalars. See C<svtype>. |
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24 | |
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25 | =for apidoc AmU||SVt_IV |
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26 | Integer type flag for scalars. See C<svtype>. |
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27 | |
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28 | =for apidoc AmU||SVt_NV |
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29 | Double type flag for scalars. See C<svtype>. |
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30 | |
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31 | =for apidoc AmU||SVt_PVMG |
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32 | Type flag for blessed scalars. See C<svtype>. |
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33 | |
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34 | =for apidoc AmU||SVt_PVAV |
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35 | Type flag for arrays. See C<svtype>. |
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36 | |
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37 | =for apidoc AmU||SVt_PVHV |
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38 | Type flag for hashes. See C<svtype>. |
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39 | |
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40 | =for apidoc AmU||SVt_PVCV |
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41 | Type flag for code refs. See C<svtype>. |
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42 | |
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43 | =cut |
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44 | */ |
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45 | |
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46 | typedef enum { |
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47 | SVt_NULL, /* 0 */ |
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48 | SVt_IV, /* 1 */ |
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49 | SVt_NV, /* 2 */ |
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50 | SVt_RV, /* 3 */ |
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51 | SVt_PV, /* 4 */ |
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52 | SVt_PVIV, /* 5 */ |
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53 | SVt_PVNV, /* 6 */ |
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54 | SVt_PVMG, /* 7 */ |
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55 | SVt_PVBM, /* 8 */ |
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56 | SVt_PVLV, /* 9 */ |
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57 | SVt_PVAV, /* 10 */ |
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58 | SVt_PVHV, /* 11 */ |
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59 | SVt_PVCV, /* 12 */ |
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60 | SVt_PVGV, /* 13 */ |
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61 | SVt_PVFM, /* 14 */ |
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62 | SVt_PVIO /* 15 */ |
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63 | } svtype; |
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64 | |
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65 | /* Using C's structural equivalence to help emulate C++ inheritance here... */ |
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66 | |
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67 | struct STRUCT_SV { /* struct sv { */ |
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68 | void* sv_any; /* pointer to something */ |
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69 | U32 sv_refcnt; /* how many references to us */ |
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70 | U32 sv_flags; /* what we are */ |
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71 | }; |
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72 | |
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73 | struct gv { |
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74 | XPVGV* sv_any; /* pointer to something */ |
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75 | U32 sv_refcnt; /* how many references to us */ |
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76 | U32 sv_flags; /* what we are */ |
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77 | }; |
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78 | |
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79 | struct cv { |
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80 | XPVCV* sv_any; /* pointer to something */ |
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81 | U32 sv_refcnt; /* how many references to us */ |
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82 | U32 sv_flags; /* what we are */ |
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83 | }; |
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84 | |
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85 | struct av { |
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86 | XPVAV* sv_any; /* pointer to something */ |
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87 | U32 sv_refcnt; /* how many references to us */ |
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88 | U32 sv_flags; /* what we are */ |
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89 | }; |
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90 | |
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91 | struct hv { |
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92 | XPVHV* sv_any; /* pointer to something */ |
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93 | U32 sv_refcnt; /* how many references to us */ |
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94 | U32 sv_flags; /* what we are */ |
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95 | }; |
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96 | |
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97 | struct io { |
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98 | XPVIO* sv_any; /* pointer to something */ |
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99 | U32 sv_refcnt; /* how many references to us */ |
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100 | U32 sv_flags; /* what we are */ |
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101 | }; |
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102 | |
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103 | /* |
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104 | =head1 SV Manipulation Functions |
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105 | |
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106 | =for apidoc Am|U32|SvREFCNT|SV* sv |
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107 | Returns the value of the object's reference count. |
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108 | |
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109 | =for apidoc Am|SV*|SvREFCNT_inc|SV* sv |
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110 | Increments the reference count of the given SV. |
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111 | |
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112 | =for apidoc Am|void|SvREFCNT_dec|SV* sv |
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113 | Decrements the reference count of the given SV. |
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114 | |
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115 | =for apidoc Am|svtype|SvTYPE|SV* sv |
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116 | Returns the type of the SV. See C<svtype>. |
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117 | |
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118 | =for apidoc Am|void|SvUPGRADE|SV* sv|svtype type |
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119 | Used to upgrade an SV to a more complex form. Uses C<sv_upgrade> to |
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120 | perform the upgrade if necessary. See C<svtype>. |
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121 | |
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122 | =cut |
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123 | */ |
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124 | |
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125 | #define SvANY(sv) (sv)->sv_any |
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126 | #define SvFLAGS(sv) (sv)->sv_flags |
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127 | #define SvREFCNT(sv) (sv)->sv_refcnt |
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128 | |
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129 | #ifdef USE_5005THREADS |
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130 | |
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131 | # if defined(VMS) |
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132 | # define ATOMIC_INC(count) __ATOMIC_INCREMENT_LONG(&count) |
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133 | # define ATOMIC_DEC_AND_TEST(res,count) res=(1==__ATOMIC_DECREMENT_LONG(&count)) |
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134 | # else |
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135 | # ifdef EMULATE_ATOMIC_REFCOUNTS |
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136 | # define ATOMIC_INC(count) STMT_START { \ |
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137 | MUTEX_LOCK(&PL_svref_mutex); \ |
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138 | ++count; \ |
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139 | MUTEX_UNLOCK(&PL_svref_mutex); \ |
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140 | } STMT_END |
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141 | # define ATOMIC_DEC_AND_TEST(res,count) STMT_START { \ |
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142 | MUTEX_LOCK(&PL_svref_mutex); \ |
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143 | res = (--count == 0); \ |
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144 | MUTEX_UNLOCK(&PL_svref_mutex); \ |
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145 | } STMT_END |
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146 | # else |
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147 | # define ATOMIC_INC(count) atomic_inc(&count) |
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148 | # define ATOMIC_DEC_AND_TEST(res,count) (res = atomic_dec_and_test(&count)) |
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149 | # endif /* EMULATE_ATOMIC_REFCOUNTS */ |
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150 | # endif /* VMS */ |
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151 | #else |
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152 | # define ATOMIC_INC(count) (++count) |
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153 | # define ATOMIC_DEC_AND_TEST(res, count) (res = (--count == 0)) |
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154 | #endif /* USE_5005THREADS */ |
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155 | |
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156 | #if defined(__GNUC__) && !defined(__STRICT_ANSI__) && !defined(PERL_GCC_PEDANTIC) |
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157 | # define SvREFCNT_inc(sv) \ |
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158 | ({ \ |
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159 | SV *_sv = (SV*)(sv); \ |
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160 | if (_sv) \ |
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161 | ATOMIC_INC(SvREFCNT(_sv)); \ |
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162 | _sv; \ |
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163 | }) |
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164 | #else |
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165 | # ifdef USE_5005THREADS |
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166 | # if defined(VMS) && defined(__ALPHA) |
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167 | # define SvREFCNT_inc(sv) \ |
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168 | (PL_Sv=(SV*)(sv), (PL_Sv && __ATOMIC_INCREMENT_LONG(&(SvREFCNT(PL_Sv)))), (SV *)PL_Sv) |
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169 | # else |
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170 | # define SvREFCNT_inc(sv) sv_newref((SV*)sv) |
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171 | # endif |
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172 | # else |
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173 | # define SvREFCNT_inc(sv) \ |
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174 | ((PL_Sv=(SV*)(sv)), (PL_Sv && ATOMIC_INC(SvREFCNT(PL_Sv))), (SV*)PL_Sv) |
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175 | # endif |
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176 | #endif |
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177 | |
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178 | #define SvREFCNT_dec(sv) sv_free((SV*)(sv)) |
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179 | |
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180 | #define SVTYPEMASK 0xff |
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181 | #define SvTYPE(sv) ((sv)->sv_flags & SVTYPEMASK) |
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182 | |
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183 | #define SvUPGRADE(sv, mt) (SvTYPE(sv) >= mt || sv_upgrade(sv, mt)) |
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184 | |
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185 | #define SVs_PADBUSY 0x00000100 /* reserved for tmp or my already */ |
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186 | #define SVs_PADTMP 0x00000200 /* in use as tmp */ |
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187 | #define SVs_PADMY 0x00000400 /* in use a "my" variable */ |
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188 | #define SVs_TEMP 0x00000800 /* string is stealable? */ |
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189 | #define SVs_OBJECT 0x00001000 /* is "blessed" */ |
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190 | #define SVs_GMG 0x00002000 /* has magical get method */ |
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191 | #define SVs_SMG 0x00004000 /* has magical set method */ |
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192 | #define SVs_RMG 0x00008000 /* has random magical methods */ |
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193 | |
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194 | #define SVf_IOK 0x00010000 /* has valid public integer value */ |
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195 | #define SVf_NOK 0x00020000 /* has valid public numeric value */ |
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196 | #define SVf_POK 0x00040000 /* has valid public pointer value */ |
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197 | #define SVf_ROK 0x00080000 /* has a valid reference pointer */ |
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198 | |
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199 | #define SVf_FAKE 0x00100000 /* glob or lexical is just a copy */ |
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200 | #define SVf_OOK 0x00200000 /* has valid offset value */ |
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201 | #define SVf_BREAK 0x00400000 /* refcnt is artificially low - used |
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202 | * by SV's in final arena cleanup */ |
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203 | #define SVf_READONLY 0x00800000 /* may not be modified */ |
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204 | |
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205 | |
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206 | #define SVp_IOK 0x01000000 /* has valid non-public integer value */ |
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207 | #define SVp_NOK 0x02000000 /* has valid non-public numeric value */ |
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208 | #define SVp_POK 0x04000000 /* has valid non-public pointer value */ |
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209 | #define SVp_SCREAM 0x08000000 /* has been studied? */ |
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210 | |
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211 | #define SVf_UTF8 0x20000000 /* SvPV is UTF-8 encoded */ |
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212 | |
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213 | #define SVf_THINKFIRST (SVf_READONLY|SVf_ROK|SVf_FAKE) |
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214 | |
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215 | #define SVf_OK (SVf_IOK|SVf_NOK|SVf_POK|SVf_ROK| \ |
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216 | SVp_IOK|SVp_NOK|SVp_POK) |
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217 | |
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218 | #define SVf_AMAGIC 0x10000000 /* has magical overloaded methods */ |
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219 | |
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220 | #define PRIVSHIFT 8 /* (SVp_?OK >> PRIVSHIFT) == SVf_?OK */ |
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221 | |
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222 | /* Some private flags. */ |
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223 | |
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224 | /* SVpad_OUR may be set on SVt_PV{NV,MG,GV} types */ |
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225 | #define SVpad_OUR 0x80000000 /* pad name is "our" instead of "my" */ |
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226 | #define SVpad_TYPED 0x40000000 /* Typed Lexical */ |
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227 | |
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228 | #define SVf_IVisUV 0x80000000 /* use XPVUV instead of XPVIV */ |
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229 | |
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230 | #define SVpfm_COMPILED 0x80000000 /* FORMLINE is compiled */ |
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231 | |
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232 | #define SVpbm_VALID 0x80000000 |
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233 | #define SVpbm_TAIL 0x40000000 |
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234 | |
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235 | #define SVrepl_EVAL 0x40000000 /* Replacement part of s///e */ |
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236 | |
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237 | #define SVphv_REHASH 0x10000000 /* HV is recalculating hash values */ |
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238 | #define SVphv_SHAREKEYS 0x20000000 /* keys live on shared string table */ |
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239 | #define SVphv_LAZYDEL 0x40000000 /* entry in xhv_eiter must be deleted */ |
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240 | #define SVphv_HASKFLAGS 0x80000000 /* keys have flag byte after hash */ |
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241 | |
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242 | #define SVprv_WEAKREF 0x80000000 /* Weak reference */ |
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243 | |
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244 | struct xrv { |
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245 | SV * xrv_rv; /* pointer to another SV */ |
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246 | }; |
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247 | |
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248 | struct xpv { |
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249 | char * xpv_pv; /* pointer to malloced string */ |
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250 | STRLEN xpv_cur; /* length of xpv_pv as a C string */ |
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251 | STRLEN xpv_len; /* allocated size */ |
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252 | }; |
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253 | |
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254 | struct xpviv { |
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255 | char * xpv_pv; /* pointer to malloced string */ |
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256 | STRLEN xpv_cur; /* length of xpv_pv as a C string */ |
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257 | STRLEN xpv_len; /* allocated size */ |
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258 | IV xiv_iv; /* integer value or pv offset */ |
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259 | }; |
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260 | |
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261 | struct xpvuv { |
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262 | char * xpv_pv; /* pointer to malloced string */ |
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263 | STRLEN xpv_cur; /* length of xpv_pv as a C string */ |
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264 | STRLEN xpv_len; /* allocated size */ |
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265 | UV xuv_uv; /* unsigned value or pv offset */ |
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266 | }; |
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267 | |
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268 | struct xpvnv { |
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269 | char * xpv_pv; /* pointer to malloced string */ |
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270 | STRLEN xpv_cur; /* length of xpv_pv as a C string */ |
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271 | STRLEN xpv_len; /* allocated size */ |
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272 | IV xiv_iv; /* integer value or pv offset */ |
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273 | NV xnv_nv; /* numeric value, if any */ |
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274 | }; |
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275 | |
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276 | /* These structure must match the beginning of struct xpvhv in hv.h. */ |
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277 | struct xpvmg { |
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278 | char * xpv_pv; /* pointer to malloced string */ |
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279 | STRLEN xpv_cur; /* length of xpv_pv as a C string */ |
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280 | STRLEN xpv_len; /* allocated size */ |
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281 | IV xiv_iv; /* integer value or pv offset */ |
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282 | NV xnv_nv; /* numeric value, if any */ |
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283 | MAGIC* xmg_magic; /* linked list of magicalness */ |
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284 | HV* xmg_stash; /* class package */ |
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285 | }; |
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286 | |
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287 | struct xpvlv { |
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288 | char * xpv_pv; /* pointer to malloced string */ |
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289 | STRLEN xpv_cur; /* length of xpv_pv as a C string */ |
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290 | STRLEN xpv_len; /* allocated size */ |
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291 | IV xiv_iv; /* integer value or pv offset */ |
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292 | NV xnv_nv; /* numeric value, if any */ |
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293 | MAGIC* xmg_magic; /* linked list of magicalness */ |
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294 | HV* xmg_stash; /* class package */ |
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295 | |
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296 | STRLEN xlv_targoff; |
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297 | STRLEN xlv_targlen; |
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298 | SV* xlv_targ; |
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299 | char xlv_type; /* k=keys .=pos x=substr v=vec /=join/re |
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300 | * y=alem/helem/iter t=tie T=tied HE */ |
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301 | }; |
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302 | |
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303 | struct xpvgv { |
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304 | char * xpv_pv; /* pointer to malloced string */ |
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305 | STRLEN xpv_cur; /* length of xpv_pv as a C string */ |
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306 | STRLEN xpv_len; /* allocated size */ |
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307 | IV xiv_iv; /* integer value or pv offset */ |
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308 | NV xnv_nv; /* numeric value, if any */ |
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309 | MAGIC* xmg_magic; /* linked list of magicalness */ |
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310 | HV* xmg_stash; /* class package */ |
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311 | |
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312 | GP* xgv_gp; |
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313 | char* xgv_name; |
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314 | STRLEN xgv_namelen; |
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315 | HV* xgv_stash; |
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316 | U8 xgv_flags; |
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317 | }; |
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318 | |
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319 | struct xpvbm { |
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320 | char * xpv_pv; /* pointer to malloced string */ |
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321 | STRLEN xpv_cur; /* length of xpv_pv as a C string */ |
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322 | STRLEN xpv_len; /* allocated size */ |
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323 | IV xiv_iv; /* integer value or pv offset */ |
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324 | NV xnv_nv; /* numeric value, if any */ |
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325 | MAGIC* xmg_magic; /* linked list of magicalness */ |
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326 | HV* xmg_stash; /* class package */ |
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327 | |
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328 | I32 xbm_useful; /* is this constant pattern being useful? */ |
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329 | U16 xbm_previous; /* how many characters in string before rare? */ |
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330 | U8 xbm_rare; /* rarest character in string */ |
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331 | }; |
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332 | |
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333 | /* This structure must match XPVCV in cv.h */ |
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334 | |
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335 | typedef U16 cv_flags_t; |
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336 | |
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337 | struct xpvfm { |
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338 | char * xpv_pv; /* pointer to malloced string */ |
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339 | STRLEN xpv_cur; /* length of xpv_pv as a C string */ |
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340 | STRLEN xpv_len; /* allocated size */ |
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341 | IV xiv_iv; /* integer value or pv offset */ |
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342 | NV xnv_nv; /* numeric value, if any */ |
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343 | MAGIC* xmg_magic; /* linked list of magicalness */ |
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344 | HV* xmg_stash; /* class package */ |
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345 | |
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346 | HV * xcv_stash; |
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347 | OP * xcv_start; |
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348 | OP * xcv_root; |
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349 | void (*xcv_xsub)(pTHX_ CV*); |
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350 | ANY xcv_xsubany; |
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351 | GV * xcv_gv; |
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352 | char * xcv_file; |
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353 | long xcv_depth; /* >= 2 indicates recursive call */ |
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354 | AV * xcv_padlist; |
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355 | CV * xcv_outside; |
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356 | #ifdef USE_5005THREADS |
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357 | perl_mutex *xcv_mutexp; /* protects xcv_owner */ |
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358 | struct perl_thread *xcv_owner; /* current owner thread */ |
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359 | #endif /* USE_5005THREADS */ |
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360 | cv_flags_t xcv_flags; |
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361 | U32 xcv_outside_seq; /* the COP sequence (at the point of our |
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362 | * compilation) in the lexically enclosing |
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363 | * sub */ |
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364 | IV xfm_lines; |
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365 | }; |
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366 | |
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367 | struct xpvio { |
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368 | char * xpv_pv; /* pointer to malloced string */ |
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369 | STRLEN xpv_cur; /* length of xpv_pv as a C string */ |
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370 | STRLEN xpv_len; /* allocated size */ |
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371 | IV xiv_iv; /* integer value or pv offset */ |
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372 | NV xnv_nv; /* numeric value, if any */ |
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373 | MAGIC* xmg_magic; /* linked list of magicalness */ |
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374 | HV* xmg_stash; /* class package */ |
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375 | |
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376 | PerlIO * xio_ifp; /* ifp and ofp are normally the same */ |
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377 | PerlIO * xio_ofp; /* but sockets need separate streams */ |
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378 | /* Cray addresses everything by word boundaries (64 bits) and |
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379 | * code and data pointers cannot be mixed (which is exactly what |
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380 | * Perl_filter_add() tries to do with the dirp), hence the following |
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381 | * union trick (as suggested by Gurusamy Sarathy). |
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382 | * For further information see Geir Johansen's problem report titled |
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383 | [ID 20000612.002] Perl problem on Cray system |
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384 | * The any pointer (known as IoANY()) will also be a good place |
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385 | * to hang any IO disciplines to. |
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386 | */ |
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387 | union { |
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388 | DIR * xiou_dirp; /* for opendir, readdir, etc */ |
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389 | void * xiou_any; /* for alignment */ |
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390 | } xio_dirpu; |
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391 | IV xio_lines; /* $. */ |
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392 | IV xio_page; /* $% */ |
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393 | IV xio_page_len; /* $= */ |
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394 | IV xio_lines_left; /* $- */ |
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395 | char * xio_top_name; /* $^ */ |
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396 | GV * xio_top_gv; /* $^ */ |
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397 | char * xio_fmt_name; /* $~ */ |
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398 | GV * xio_fmt_gv; /* $~ */ |
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399 | char * xio_bottom_name;/* $^B */ |
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400 | GV * xio_bottom_gv; /* $^B */ |
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401 | short xio_subprocess; /* -| or |- */ |
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402 | char xio_type; |
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403 | char xio_flags; |
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404 | }; |
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405 | #define xio_dirp xio_dirpu.xiou_dirp |
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406 | #define xio_any xio_dirpu.xiou_any |
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407 | |
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408 | #define IOf_ARGV 1 /* this fp iterates over ARGV */ |
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409 | #define IOf_START 2 /* check for null ARGV and substitute '-' */ |
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410 | #define IOf_FLUSH 4 /* this fp wants a flush after write op */ |
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411 | #define IOf_DIDTOP 8 /* just did top of form */ |
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412 | #define IOf_UNTAINT 16 /* consider this fp (and its data) "safe" */ |
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413 | #define IOf_NOLINE 32 /* slurped a pseudo-line from empty file */ |
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414 | #define IOf_FAKE_DIRP 64 /* xio_dirp is fake (source filters kludge) */ |
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415 | |
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416 | /* The following macros define implementation-independent predicates on SVs. */ |
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417 | |
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418 | /* |
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419 | =for apidoc Am|bool|SvNIOK|SV* sv |
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420 | Returns a boolean indicating whether the SV contains a number, integer or |
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421 | double. |
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422 | |
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423 | =for apidoc Am|bool|SvNIOKp|SV* sv |
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424 | Returns a boolean indicating whether the SV contains a number, integer or |
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425 | double. Checks the B<private> setting. Use C<SvNIOK>. |
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426 | |
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427 | =for apidoc Am|void|SvNIOK_off|SV* sv |
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428 | Unsets the NV/IV status of an SV. |
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429 | |
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430 | =for apidoc Am|bool|SvOK|SV* sv |
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431 | Returns a boolean indicating whether the value is an SV. |
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432 | |
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433 | =for apidoc Am|bool|SvIOKp|SV* sv |
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434 | Returns a boolean indicating whether the SV contains an integer. Checks |
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435 | the B<private> setting. Use C<SvIOK>. |
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436 | |
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437 | =for apidoc Am|bool|SvNOKp|SV* sv |
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438 | Returns a boolean indicating whether the SV contains a double. Checks the |
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439 | B<private> setting. Use C<SvNOK>. |
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440 | |
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441 | =for apidoc Am|bool|SvPOKp|SV* sv |
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442 | Returns a boolean indicating whether the SV contains a character string. |
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443 | Checks the B<private> setting. Use C<SvPOK>. |
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444 | |
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445 | =for apidoc Am|bool|SvIOK|SV* sv |
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446 | Returns a boolean indicating whether the SV contains an integer. |
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447 | |
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448 | =for apidoc Am|void|SvIOK_on|SV* sv |
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449 | Tells an SV that it is an integer. |
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450 | |
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451 | =for apidoc Am|void|SvIOK_off|SV* sv |
---|
452 | Unsets the IV status of an SV. |
---|
453 | |
---|
454 | =for apidoc Am|void|SvIOK_only|SV* sv |
---|
455 | Tells an SV that it is an integer and disables all other OK bits. |
---|
456 | |
---|
457 | =for apidoc Am|void|SvIOK_only_UV|SV* sv |
---|
458 | Tells and SV that it is an unsigned integer and disables all other OK bits. |
---|
459 | |
---|
460 | =for apidoc Am|void|SvIOK_UV|SV* sv |
---|
461 | Returns a boolean indicating whether the SV contains an unsigned integer. |
---|
462 | |
---|
463 | =for apidoc Am|void|SvUOK|SV* sv |
---|
464 | Returns a boolean indicating whether the SV contains an unsigned integer. |
---|
465 | |
---|
466 | =for apidoc Am|void|SvIOK_notUV|SV* sv |
---|
467 | Returns a boolean indicating whether the SV contains a signed integer. |
---|
468 | |
---|
469 | =for apidoc Am|bool|SvNOK|SV* sv |
---|
470 | Returns a boolean indicating whether the SV contains a double. |
---|
471 | |
---|
472 | =for apidoc Am|void|SvNOK_on|SV* sv |
---|
473 | Tells an SV that it is a double. |
---|
474 | |
---|
475 | =for apidoc Am|void|SvNOK_off|SV* sv |
---|
476 | Unsets the NV status of an SV. |
---|
477 | |
---|
478 | =for apidoc Am|void|SvNOK_only|SV* sv |
---|
479 | Tells an SV that it is a double and disables all other OK bits. |
---|
480 | |
---|
481 | =for apidoc Am|bool|SvPOK|SV* sv |
---|
482 | Returns a boolean indicating whether the SV contains a character |
---|
483 | string. |
---|
484 | |
---|
485 | =for apidoc Am|void|SvPOK_on|SV* sv |
---|
486 | Tells an SV that it is a string. |
---|
487 | |
---|
488 | =for apidoc Am|void|SvPOK_off|SV* sv |
---|
489 | Unsets the PV status of an SV. |
---|
490 | |
---|
491 | =for apidoc Am|void|SvPOK_only|SV* sv |
---|
492 | Tells an SV that it is a string and disables all other OK bits. |
---|
493 | Will also turn off the UTF-8 status. |
---|
494 | |
---|
495 | =for apidoc Am|bool|SvOOK|SV* sv |
---|
496 | Returns a boolean indicating whether the SvIVX is a valid offset value for |
---|
497 | the SvPVX. This hack is used internally to speed up removal of characters |
---|
498 | from the beginning of a SvPV. When SvOOK is true, then the start of the |
---|
499 | allocated string buffer is really (SvPVX - SvIVX). |
---|
500 | |
---|
501 | =for apidoc Am|bool|SvROK|SV* sv |
---|
502 | Tests if the SV is an RV. |
---|
503 | |
---|
504 | =for apidoc Am|void|SvROK_on|SV* sv |
---|
505 | Tells an SV that it is an RV. |
---|
506 | |
---|
507 | =for apidoc Am|void|SvROK_off|SV* sv |
---|
508 | Unsets the RV status of an SV. |
---|
509 | |
---|
510 | =for apidoc Am|SV*|SvRV|SV* sv |
---|
511 | Dereferences an RV to return the SV. |
---|
512 | |
---|
513 | =for apidoc Am|IV|SvIVX|SV* sv |
---|
514 | Returns the raw value in the SV's IV slot, without checks or conversions. |
---|
515 | Only use when you are sure SvIOK is true. See also C<SvIV()>. |
---|
516 | |
---|
517 | =for apidoc Am|UV|SvUVX|SV* sv |
---|
518 | Returns the raw value in the SV's UV slot, without checks or conversions. |
---|
519 | Only use when you are sure SvIOK is true. See also C<SvUV()>. |
---|
520 | |
---|
521 | =for apidoc Am|NV|SvNVX|SV* sv |
---|
522 | Returns the raw value in the SV's NV slot, without checks or conversions. |
---|
523 | Only use when you are sure SvNOK is true. See also C<SvNV()>. |
---|
524 | |
---|
525 | =for apidoc Am|char*|SvPVX|SV* sv |
---|
526 | Returns a pointer to the physical string in the SV. The SV must contain a |
---|
527 | string. |
---|
528 | |
---|
529 | =for apidoc Am|STRLEN|SvCUR|SV* sv |
---|
530 | Returns the length of the string which is in the SV. See C<SvLEN>. |
---|
531 | |
---|
532 | =for apidoc Am|STRLEN|SvLEN|SV* sv |
---|
533 | Returns the size of the string buffer in the SV, not including any part |
---|
534 | attributable to C<SvOOK>. See C<SvCUR>. |
---|
535 | |
---|
536 | =for apidoc Am|char*|SvEND|SV* sv |
---|
537 | Returns a pointer to the last character in the string which is in the SV. |
---|
538 | See C<SvCUR>. Access the character as *(SvEND(sv)). |
---|
539 | |
---|
540 | =for apidoc Am|HV*|SvSTASH|SV* sv |
---|
541 | Returns the stash of the SV. |
---|
542 | |
---|
543 | =for apidoc Am|void|SvCUR_set|SV* sv|STRLEN len |
---|
544 | Set the length of the string which is in the SV. See C<SvCUR>. |
---|
545 | |
---|
546 | =cut |
---|
547 | */ |
---|
548 | |
---|
549 | #define SvNIOK(sv) (SvFLAGS(sv) & (SVf_IOK|SVf_NOK)) |
---|
550 | #define SvNIOKp(sv) (SvFLAGS(sv) & (SVp_IOK|SVp_NOK)) |
---|
551 | #define SvNIOK_off(sv) (SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK| \ |
---|
552 | SVp_IOK|SVp_NOK|SVf_IVisUV)) |
---|
553 | |
---|
554 | #if defined(__GNUC__) && !defined(PERL_GCC_BRACE_GROUPS_FORBIDDEN) |
---|
555 | #define assert_not_ROK(sv) ({assert(!SvROK(sv) || !SvRV(sv));}), |
---|
556 | #else |
---|
557 | #define assert_not_ROK(sv) |
---|
558 | #endif |
---|
559 | |
---|
560 | #define SvOK(sv) (SvFLAGS(sv) & SVf_OK) |
---|
561 | #define SvOK_off(sv) (assert_not_ROK(sv) \ |
---|
562 | SvFLAGS(sv) &= ~(SVf_OK|SVf_AMAGIC| \ |
---|
563 | SVf_IVisUV|SVf_UTF8), \ |
---|
564 | SvOOK_off(sv)) |
---|
565 | #define SvOK_off_exc_UV(sv) (assert_not_ROK(sv) \ |
---|
566 | SvFLAGS(sv) &= ~(SVf_OK|SVf_AMAGIC| \ |
---|
567 | SVf_UTF8), \ |
---|
568 | SvOOK_off(sv)) |
---|
569 | |
---|
570 | #define SvOKp(sv) (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) |
---|
571 | #define SvIOKp(sv) (SvFLAGS(sv) & SVp_IOK) |
---|
572 | #define SvIOKp_on(sv) ((void)SvOOK_off(sv), SvFLAGS(sv) |= SVp_IOK) |
---|
573 | #define SvNOKp(sv) (SvFLAGS(sv) & SVp_NOK) |
---|
574 | #define SvNOKp_on(sv) (SvFLAGS(sv) |= SVp_NOK) |
---|
575 | #define SvPOKp(sv) (SvFLAGS(sv) & SVp_POK) |
---|
576 | #define SvPOKp_on(sv) (assert_not_ROK(sv) \ |
---|
577 | SvFLAGS(sv) |= SVp_POK) |
---|
578 | |
---|
579 | #define SvIOK(sv) (SvFLAGS(sv) & SVf_IOK) |
---|
580 | #define SvIOK_on(sv) ((void)SvOOK_off(sv), \ |
---|
581 | SvFLAGS(sv) |= (SVf_IOK|SVp_IOK)) |
---|
582 | #define SvIOK_off(sv) (SvFLAGS(sv) &= ~(SVf_IOK|SVp_IOK|SVf_IVisUV)) |
---|
583 | #define SvIOK_only(sv) ((void)SvOK_off(sv), \ |
---|
584 | SvFLAGS(sv) |= (SVf_IOK|SVp_IOK)) |
---|
585 | #define SvIOK_only_UV(sv) ((void)SvOK_off_exc_UV(sv), \ |
---|
586 | SvFLAGS(sv) |= (SVf_IOK|SVp_IOK)) |
---|
587 | |
---|
588 | #define SvIOK_UV(sv) ((SvFLAGS(sv) & (SVf_IOK|SVf_IVisUV)) \ |
---|
589 | == (SVf_IOK|SVf_IVisUV)) |
---|
590 | #define SvUOK(sv) SvIOK_UV(sv) |
---|
591 | #define SvIOK_notUV(sv) ((SvFLAGS(sv) & (SVf_IOK|SVf_IVisUV)) \ |
---|
592 | == SVf_IOK) |
---|
593 | |
---|
594 | #define SvVOK(sv) (SvMAGICAL(sv) && mg_find(sv,'V')) |
---|
595 | #define SvIsUV(sv) (SvFLAGS(sv) & SVf_IVisUV) |
---|
596 | #define SvIsUV_on(sv) (SvFLAGS(sv) |= SVf_IVisUV) |
---|
597 | #define SvIsUV_off(sv) (SvFLAGS(sv) &= ~SVf_IVisUV) |
---|
598 | |
---|
599 | #define SvNOK(sv) (SvFLAGS(sv) & SVf_NOK) |
---|
600 | #define SvNOK_on(sv) (SvFLAGS(sv) |= (SVf_NOK|SVp_NOK)) |
---|
601 | #define SvNOK_off(sv) (SvFLAGS(sv) &= ~(SVf_NOK|SVp_NOK)) |
---|
602 | #define SvNOK_only(sv) ((void)SvOK_off(sv), \ |
---|
603 | SvFLAGS(sv) |= (SVf_NOK|SVp_NOK)) |
---|
604 | |
---|
605 | /* |
---|
606 | =for apidoc Am|void|SvUTF8|SV* sv |
---|
607 | Returns a boolean indicating whether the SV contains UTF-8 encoded data. |
---|
608 | |
---|
609 | =for apidoc Am|void|SvUTF8_on|SV *sv |
---|
610 | Turn on the UTF-8 status of an SV (the data is not changed, just the flag). |
---|
611 | Do not use frivolously. |
---|
612 | |
---|
613 | =for apidoc Am|void|SvUTF8_off|SV *sv |
---|
614 | Unsets the UTF-8 status of an SV. |
---|
615 | |
---|
616 | =for apidoc Am|void|SvPOK_only_UTF8|SV* sv |
---|
617 | Tells an SV that it is a string and disables all other OK bits, |
---|
618 | and leaves the UTF-8 status as it was. |
---|
619 | |
---|
620 | =cut |
---|
621 | */ |
---|
622 | |
---|
623 | #define SvUTF8(sv) (SvFLAGS(sv) & SVf_UTF8) |
---|
624 | #define SvUTF8_on(sv) (SvFLAGS(sv) |= (SVf_UTF8)) |
---|
625 | #define SvUTF8_off(sv) (SvFLAGS(sv) &= ~(SVf_UTF8)) |
---|
626 | |
---|
627 | #define SvPOK(sv) (SvFLAGS(sv) & SVf_POK) |
---|
628 | #define SvPOK_on(sv) (assert_not_ROK(sv) \ |
---|
629 | SvFLAGS(sv) |= (SVf_POK|SVp_POK)) |
---|
630 | #define SvPOK_off(sv) (SvFLAGS(sv) &= ~(SVf_POK|SVp_POK)) |
---|
631 | #define SvPOK_only(sv) (assert_not_ROK(sv) \ |
---|
632 | SvFLAGS(sv) &= ~(SVf_OK|SVf_AMAGIC| \ |
---|
633 | SVf_IVisUV|SVf_UTF8), \ |
---|
634 | SvFLAGS(sv) |= (SVf_POK|SVp_POK)) |
---|
635 | #define SvPOK_only_UTF8(sv) (assert_not_ROK(sv) \ |
---|
636 | SvFLAGS(sv) &= ~(SVf_OK|SVf_AMAGIC| \ |
---|
637 | SVf_IVisUV), \ |
---|
638 | SvFLAGS(sv) |= (SVf_POK|SVp_POK)) |
---|
639 | |
---|
640 | #define SvOOK(sv) (SvFLAGS(sv) & SVf_OOK) |
---|
641 | #define SvOOK_on(sv) ((void)SvIOK_off(sv), SvFLAGS(sv) |= SVf_OOK) |
---|
642 | #define SvOOK_off(sv) (SvOOK(sv) && sv_backoff(sv)) |
---|
643 | |
---|
644 | #define SvFAKE(sv) (SvFLAGS(sv) & SVf_FAKE) |
---|
645 | #define SvFAKE_on(sv) (SvFLAGS(sv) |= SVf_FAKE) |
---|
646 | #define SvFAKE_off(sv) (SvFLAGS(sv) &= ~SVf_FAKE) |
---|
647 | |
---|
648 | #define SvROK(sv) (SvFLAGS(sv) & SVf_ROK) |
---|
649 | #define SvROK_on(sv) (SvFLAGS(sv) |= SVf_ROK) |
---|
650 | #define SvROK_off(sv) (SvFLAGS(sv) &= ~(SVf_ROK|SVf_AMAGIC)) |
---|
651 | |
---|
652 | #define SvMAGICAL(sv) (SvFLAGS(sv) & (SVs_GMG|SVs_SMG|SVs_RMG)) |
---|
653 | #define SvMAGICAL_on(sv) (SvFLAGS(sv) |= (SVs_GMG|SVs_SMG|SVs_RMG)) |
---|
654 | #define SvMAGICAL_off(sv) (SvFLAGS(sv) &= ~(SVs_GMG|SVs_SMG|SVs_RMG)) |
---|
655 | |
---|
656 | #define SvGMAGICAL(sv) (SvFLAGS(sv) & SVs_GMG) |
---|
657 | #define SvGMAGICAL_on(sv) (SvFLAGS(sv) |= SVs_GMG) |
---|
658 | #define SvGMAGICAL_off(sv) (SvFLAGS(sv) &= ~SVs_GMG) |
---|
659 | |
---|
660 | #define SvSMAGICAL(sv) (SvFLAGS(sv) & SVs_SMG) |
---|
661 | #define SvSMAGICAL_on(sv) (SvFLAGS(sv) |= SVs_SMG) |
---|
662 | #define SvSMAGICAL_off(sv) (SvFLAGS(sv) &= ~SVs_SMG) |
---|
663 | |
---|
664 | #define SvRMAGICAL(sv) (SvFLAGS(sv) & SVs_RMG) |
---|
665 | #define SvRMAGICAL_on(sv) (SvFLAGS(sv) |= SVs_RMG) |
---|
666 | #define SvRMAGICAL_off(sv) (SvFLAGS(sv) &= ~SVs_RMG) |
---|
667 | |
---|
668 | #define SvAMAGIC(sv) (SvFLAGS(sv) & SVf_AMAGIC) |
---|
669 | #define SvAMAGIC_on(sv) (SvFLAGS(sv) |= SVf_AMAGIC) |
---|
670 | #define SvAMAGIC_off(sv) (SvFLAGS(sv) &= ~SVf_AMAGIC) |
---|
671 | |
---|
672 | #define SvGAMAGIC(sv) (SvFLAGS(sv) & (SVs_GMG|SVf_AMAGIC)) |
---|
673 | |
---|
674 | /* |
---|
675 | #define Gv_AMG(stash) \ |
---|
676 | (HV_AMAGICmb(stash) && \ |
---|
677 | ((!HV_AMAGICbad(stash) && HV_AMAGIC(stash)) || Gv_AMupdate(stash))) |
---|
678 | */ |
---|
679 | #define Gv_AMG(stash) (PL_amagic_generation && Gv_AMupdate(stash)) |
---|
680 | |
---|
681 | #define SvWEAKREF(sv) ((SvFLAGS(sv) & (SVf_ROK|SVprv_WEAKREF)) \ |
---|
682 | == (SVf_ROK|SVprv_WEAKREF)) |
---|
683 | #define SvWEAKREF_on(sv) (SvFLAGS(sv) |= (SVf_ROK|SVprv_WEAKREF)) |
---|
684 | #define SvWEAKREF_off(sv) (SvFLAGS(sv) &= ~(SVf_ROK|SVprv_WEAKREF)) |
---|
685 | |
---|
686 | #define SvTHINKFIRST(sv) (SvFLAGS(sv) & SVf_THINKFIRST) |
---|
687 | |
---|
688 | #define SvPADBUSY(sv) (SvFLAGS(sv) & SVs_PADBUSY) |
---|
689 | |
---|
690 | #define SvPADTMP(sv) (SvFLAGS(sv) & SVs_PADTMP) |
---|
691 | #define SvPADTMP_on(sv) (SvFLAGS(sv) |= SVs_PADTMP|SVs_PADBUSY) |
---|
692 | #define SvPADTMP_off(sv) (SvFLAGS(sv) &= ~SVs_PADTMP) |
---|
693 | |
---|
694 | #define SvPADMY(sv) (SvFLAGS(sv) & SVs_PADMY) |
---|
695 | #define SvPADMY_on(sv) (SvFLAGS(sv) |= SVs_PADMY|SVs_PADBUSY) |
---|
696 | |
---|
697 | #define SvTEMP(sv) (SvFLAGS(sv) & SVs_TEMP) |
---|
698 | #define SvTEMP_on(sv) (SvFLAGS(sv) |= SVs_TEMP) |
---|
699 | #define SvTEMP_off(sv) (SvFLAGS(sv) &= ~SVs_TEMP) |
---|
700 | |
---|
701 | #define SvOBJECT(sv) (SvFLAGS(sv) & SVs_OBJECT) |
---|
702 | #define SvOBJECT_on(sv) (SvFLAGS(sv) |= SVs_OBJECT) |
---|
703 | #define SvOBJECT_off(sv) (SvFLAGS(sv) &= ~SVs_OBJECT) |
---|
704 | |
---|
705 | #define SvREADONLY(sv) (SvFLAGS(sv) & SVf_READONLY) |
---|
706 | #define SvREADONLY_on(sv) (SvFLAGS(sv) |= SVf_READONLY) |
---|
707 | #define SvREADONLY_off(sv) (SvFLAGS(sv) &= ~SVf_READONLY) |
---|
708 | |
---|
709 | #define SvSCREAM(sv) (SvFLAGS(sv) & SVp_SCREAM) |
---|
710 | #define SvSCREAM_on(sv) (SvFLAGS(sv) |= SVp_SCREAM) |
---|
711 | #define SvSCREAM_off(sv) (SvFLAGS(sv) &= ~SVp_SCREAM) |
---|
712 | |
---|
713 | #define SvCOMPILED(sv) (SvFLAGS(sv) & SVpfm_COMPILED) |
---|
714 | #define SvCOMPILED_on(sv) (SvFLAGS(sv) |= SVpfm_COMPILED) |
---|
715 | #define SvCOMPILED_off(sv) (SvFLAGS(sv) &= ~SVpfm_COMPILED) |
---|
716 | |
---|
717 | #define SvEVALED(sv) (SvFLAGS(sv) & SVrepl_EVAL) |
---|
718 | #define SvEVALED_on(sv) (SvFLAGS(sv) |= SVrepl_EVAL) |
---|
719 | #define SvEVALED_off(sv) (SvFLAGS(sv) &= ~SVrepl_EVAL) |
---|
720 | |
---|
721 | #define SvTAIL(sv) (SvFLAGS(sv) & SVpbm_TAIL) |
---|
722 | #define SvTAIL_on(sv) (SvFLAGS(sv) |= SVpbm_TAIL) |
---|
723 | #define SvTAIL_off(sv) (SvFLAGS(sv) &= ~SVpbm_TAIL) |
---|
724 | |
---|
725 | #define SvVALID(sv) (SvFLAGS(sv) & SVpbm_VALID) |
---|
726 | #define SvVALID_on(sv) (SvFLAGS(sv) |= SVpbm_VALID) |
---|
727 | #define SvVALID_off(sv) (SvFLAGS(sv) &= ~SVpbm_VALID) |
---|
728 | |
---|
729 | #ifdef USE_ITHREADS |
---|
730 | /* The following uses the FAKE flag to show that a regex pointer is infact |
---|
731 | its own offset in the regexpad for ithreads */ |
---|
732 | #define SvREPADTMP(sv) (SvFLAGS(sv) & SVf_FAKE) |
---|
733 | #define SvREPADTMP_on(sv) (SvFLAGS(sv) |= SVf_FAKE) |
---|
734 | #define SvREPADTMP_off(sv) (SvFLAGS(sv) &= ~SVf_FAKE) |
---|
735 | #endif |
---|
736 | |
---|
737 | #define SvRV(sv) ((XRV*) SvANY(sv))->xrv_rv |
---|
738 | #define SvRVx(sv) SvRV(sv) |
---|
739 | |
---|
740 | #define SvIVX(sv) ((XPVIV*) SvANY(sv))->xiv_iv |
---|
741 | #define SvIVXx(sv) SvIVX(sv) |
---|
742 | #define SvUVX(sv) ((XPVUV*) SvANY(sv))->xuv_uv |
---|
743 | #define SvUVXx(sv) SvUVX(sv) |
---|
744 | #define SvNVX(sv) ((XPVNV*)SvANY(sv))->xnv_nv |
---|
745 | #define SvNVXx(sv) SvNVX(sv) |
---|
746 | #define SvPVX(sv) ((XPV*) SvANY(sv))->xpv_pv |
---|
747 | #define SvPVXx(sv) SvPVX(sv) |
---|
748 | #define SvCUR(sv) ((XPV*) SvANY(sv))->xpv_cur |
---|
749 | #define SvLEN(sv) ((XPV*) SvANY(sv))->xpv_len |
---|
750 | #define SvLENx(sv) SvLEN(sv) |
---|
751 | #define SvEND(sv)(((XPV*) SvANY(sv))->xpv_pv + ((XPV*)SvANY(sv))->xpv_cur) |
---|
752 | #define SvENDx(sv) ((PL_Sv = (sv)), SvEND(PL_Sv)) |
---|
753 | #define SvMAGIC(sv) ((XPVMG*) SvANY(sv))->xmg_magic |
---|
754 | #define SvSTASH(sv) ((XPVMG*) SvANY(sv))->xmg_stash |
---|
755 | |
---|
756 | /* Ask a scalar nicely to try to become an IV, if possible. |
---|
757 | Not guaranteed to stay returning void */ |
---|
758 | /* Macro won't actually call sv_2iv if already IOK */ |
---|
759 | #define SvIV_please(sv) \ |
---|
760 | STMT_START {if (!SvIOKp(sv) && (SvNOK(sv) || SvPOK(sv))) \ |
---|
761 | (void) SvIV(sv); } STMT_END |
---|
762 | #define SvIV_set(sv, val) \ |
---|
763 | STMT_START { assert(SvTYPE(sv) == SVt_IV || SvTYPE(sv) >= SVt_PVIV); \ |
---|
764 | (((XPVIV*) SvANY(sv))->xiv_iv = val); } STMT_END |
---|
765 | #define SvNV_set(sv, val) \ |
---|
766 | STMT_START { assert(SvTYPE(sv) == SVt_NV || SvTYPE(sv) >= SVt_PVNV); \ |
---|
767 | (((XPVNV*) SvANY(sv))->xnv_nv = val); } STMT_END |
---|
768 | #define SvPV_set(sv, val) \ |
---|
769 | STMT_START { assert(SvTYPE(sv) >= SVt_PV); \ |
---|
770 | (((XPV*) SvANY(sv))->xpv_pv = val); } STMT_END |
---|
771 | #define SvCUR_set(sv, val) \ |
---|
772 | STMT_START { assert(SvTYPE(sv) >= SVt_PV); \ |
---|
773 | (((XPV*) SvANY(sv))->xpv_cur = val); } STMT_END |
---|
774 | #define SvLEN_set(sv, val) \ |
---|
775 | STMT_START { assert(SvTYPE(sv) >= SVt_PV); \ |
---|
776 | (((XPV*) SvANY(sv))->xpv_len = val); } STMT_END |
---|
777 | #define SvEND_set(sv, val) \ |
---|
778 | STMT_START { assert(SvTYPE(sv) >= SVt_PV); \ |
---|
779 | (((XPV*) SvANY(sv))->xpv_cur = val - SvPVX(sv)); } STMT_END |
---|
780 | |
---|
781 | #define BmRARE(sv) ((XPVBM*) SvANY(sv))->xbm_rare |
---|
782 | #define BmUSEFUL(sv) ((XPVBM*) SvANY(sv))->xbm_useful |
---|
783 | #define BmPREVIOUS(sv) ((XPVBM*) SvANY(sv))->xbm_previous |
---|
784 | |
---|
785 | #define FmLINES(sv) ((XPVFM*) SvANY(sv))->xfm_lines |
---|
786 | |
---|
787 | #define LvTYPE(sv) ((XPVLV*) SvANY(sv))->xlv_type |
---|
788 | #define LvTARG(sv) ((XPVLV*) SvANY(sv))->xlv_targ |
---|
789 | #define LvTARGOFF(sv) ((XPVLV*) SvANY(sv))->xlv_targoff |
---|
790 | #define LvTARGLEN(sv) ((XPVLV*) SvANY(sv))->xlv_targlen |
---|
791 | |
---|
792 | #define IoIFP(sv) ((XPVIO*) SvANY(sv))->xio_ifp |
---|
793 | #define IoOFP(sv) ((XPVIO*) SvANY(sv))->xio_ofp |
---|
794 | #define IoDIRP(sv) ((XPVIO*) SvANY(sv))->xio_dirp |
---|
795 | #define IoANY(sv) ((XPVIO*) SvANY(sv))->xio_any |
---|
796 | #define IoLINES(sv) ((XPVIO*) SvANY(sv))->xio_lines |
---|
797 | #define IoPAGE(sv) ((XPVIO*) SvANY(sv))->xio_page |
---|
798 | #define IoPAGE_LEN(sv) ((XPVIO*) SvANY(sv))->xio_page_len |
---|
799 | #define IoLINES_LEFT(sv)((XPVIO*) SvANY(sv))->xio_lines_left |
---|
800 | #define IoTOP_NAME(sv) ((XPVIO*) SvANY(sv))->xio_top_name |
---|
801 | #define IoTOP_GV(sv) ((XPVIO*) SvANY(sv))->xio_top_gv |
---|
802 | #define IoFMT_NAME(sv) ((XPVIO*) SvANY(sv))->xio_fmt_name |
---|
803 | #define IoFMT_GV(sv) ((XPVIO*) SvANY(sv))->xio_fmt_gv |
---|
804 | #define IoBOTTOM_NAME(sv)((XPVIO*) SvANY(sv))->xio_bottom_name |
---|
805 | #define IoBOTTOM_GV(sv) ((XPVIO*) SvANY(sv))->xio_bottom_gv |
---|
806 | #define IoSUBPROCESS(sv)((XPVIO*) SvANY(sv))->xio_subprocess |
---|
807 | #define IoTYPE(sv) ((XPVIO*) SvANY(sv))->xio_type |
---|
808 | #define IoFLAGS(sv) ((XPVIO*) SvANY(sv))->xio_flags |
---|
809 | |
---|
810 | /* IoTYPE(sv) is a single character telling the type of I/O connection. */ |
---|
811 | #define IoTYPE_RDONLY '<' |
---|
812 | #define IoTYPE_WRONLY '>' |
---|
813 | #define IoTYPE_RDWR '+' |
---|
814 | #define IoTYPE_APPEND 'a' |
---|
815 | #define IoTYPE_PIPE '|' |
---|
816 | #define IoTYPE_STD '-' /* stdin or stdout */ |
---|
817 | #define IoTYPE_SOCKET 's' |
---|
818 | #define IoTYPE_CLOSED ' ' |
---|
819 | #define IoTYPE_IMPLICIT 'I' /* stdin or stdout or stderr */ |
---|
820 | #define IoTYPE_NUMERIC '#' /* fdopen */ |
---|
821 | |
---|
822 | /* |
---|
823 | =for apidoc Am|bool|SvTAINTED|SV* sv |
---|
824 | Checks to see if an SV is tainted. Returns TRUE if it is, FALSE if |
---|
825 | not. |
---|
826 | |
---|
827 | =for apidoc Am|void|SvTAINTED_on|SV* sv |
---|
828 | Marks an SV as tainted if tainting is enabled. |
---|
829 | |
---|
830 | =for apidoc Am|void|SvTAINTED_off|SV* sv |
---|
831 | Untaints an SV. Be I<very> careful with this routine, as it short-circuits |
---|
832 | some of Perl's fundamental security features. XS module authors should not |
---|
833 | use this function unless they fully understand all the implications of |
---|
834 | unconditionally untainting the value. Untainting should be done in the |
---|
835 | standard perl fashion, via a carefully crafted regexp, rather than directly |
---|
836 | untainting variables. |
---|
837 | |
---|
838 | =for apidoc Am|void|SvTAINT|SV* sv |
---|
839 | Taints an SV if tainting is enabled. |
---|
840 | |
---|
841 | =cut |
---|
842 | */ |
---|
843 | |
---|
844 | #define SvTAINTED(sv) (SvMAGICAL(sv) && sv_tainted(sv)) |
---|
845 | #define SvTAINTED_on(sv) STMT_START{ if(PL_tainting){sv_taint(sv);} }STMT_END |
---|
846 | #define SvTAINTED_off(sv) STMT_START{ if(PL_tainting){sv_untaint(sv);} }STMT_END |
---|
847 | |
---|
848 | #define SvTAINT(sv) \ |
---|
849 | STMT_START { \ |
---|
850 | if (PL_tainting) { \ |
---|
851 | if (PL_tainted) \ |
---|
852 | SvTAINTED_on(sv); \ |
---|
853 | } \ |
---|
854 | } STMT_END |
---|
855 | |
---|
856 | /* |
---|
857 | =for apidoc Am|char*|SvPV_force|SV* sv|STRLEN len |
---|
858 | Like C<SvPV> but will force the SV into containing just a string |
---|
859 | (C<SvPOK_only>). You want force if you are going to update the C<SvPVX> |
---|
860 | directly. |
---|
861 | |
---|
862 | =for apidoc Am|char*|SvPV_force_nomg|SV* sv|STRLEN len |
---|
863 | Like C<SvPV> but will force the SV into containing just a string |
---|
864 | (C<SvPOK_only>). You want force if you are going to update the C<SvPVX> |
---|
865 | directly. Doesn't process magic. |
---|
866 | |
---|
867 | =for apidoc Am|char*|SvPV|SV* sv|STRLEN len |
---|
868 | Returns a pointer to the string in the SV, or a stringified form of |
---|
869 | the SV if the SV does not contain a string. The SV may cache the |
---|
870 | stringified version becoming C<SvPOK>. Handles 'get' magic. See also |
---|
871 | C<SvPVx> for a version which guarantees to evaluate sv only once. |
---|
872 | |
---|
873 | =for apidoc Am|char*|SvPVx|SV* sv|STRLEN len |
---|
874 | A version of C<SvPV> which guarantees to evaluate sv only once. |
---|
875 | |
---|
876 | =for apidoc Am|char*|SvPV_nolen|SV* sv |
---|
877 | Returns a pointer to the string in the SV, or a stringified form of |
---|
878 | the SV if the SV does not contain a string. The SV may cache the |
---|
879 | stringified form becoming C<SvPOK>. Handles 'get' magic. |
---|
880 | |
---|
881 | =for apidoc Am|IV|SvIV|SV* sv |
---|
882 | Coerces the given SV to an integer and returns it. See C<SvIVx> for a |
---|
883 | version which guarantees to evaluate sv only once. |
---|
884 | |
---|
885 | =for apidoc Am|IV|SvIVx|SV* sv |
---|
886 | Coerces the given SV to an integer and returns it. Guarantees to evaluate |
---|
887 | sv only once. Use the more efficient C<SvIV> otherwise. |
---|
888 | |
---|
889 | =for apidoc Am|NV|SvNV|SV* sv |
---|
890 | Coerce the given SV to a double and return it. See C<SvNVx> for a version |
---|
891 | which guarantees to evaluate sv only once. |
---|
892 | |
---|
893 | =for apidoc Am|NV|SvNVx|SV* sv |
---|
894 | Coerces the given SV to a double and returns it. Guarantees to evaluate |
---|
895 | sv only once. Use the more efficient C<SvNV> otherwise. |
---|
896 | |
---|
897 | =for apidoc Am|UV|SvUV|SV* sv |
---|
898 | Coerces the given SV to an unsigned integer and returns it. See C<SvUVx> |
---|
899 | for a version which guarantees to evaluate sv only once. |
---|
900 | |
---|
901 | =for apidoc Am|UV|SvUVx|SV* sv |
---|
902 | Coerces the given SV to an unsigned integer and returns it. Guarantees to |
---|
903 | evaluate sv only once. Use the more efficient C<SvUV> otherwise. |
---|
904 | |
---|
905 | =for apidoc Am|bool|SvTRUE|SV* sv |
---|
906 | Returns a boolean indicating whether Perl would evaluate the SV as true or |
---|
907 | false, defined or undefined. Does not handle 'get' magic. |
---|
908 | |
---|
909 | =for apidoc Am|char*|SvPVutf8_force|SV* sv|STRLEN len |
---|
910 | Like C<SvPV_force>, but converts sv to utf8 first if necessary. |
---|
911 | |
---|
912 | =for apidoc Am|char*|SvPVutf8|SV* sv|STRLEN len |
---|
913 | Like C<SvPV>, but converts sv to utf8 first if necessary. |
---|
914 | |
---|
915 | =for apidoc Am|char*|SvPVutf8_nolen|SV* sv |
---|
916 | Like C<SvPV_nolen>, but converts sv to utf8 first if necessary. |
---|
917 | |
---|
918 | =for apidoc Am|char*|SvPVbyte_force|SV* sv|STRLEN len |
---|
919 | Like C<SvPV_force>, but converts sv to byte representation first if necessary. |
---|
920 | |
---|
921 | =for apidoc Am|char*|SvPVbyte|SV* sv|STRLEN len |
---|
922 | Like C<SvPV>, but converts sv to byte representation first if necessary. |
---|
923 | |
---|
924 | =for apidoc Am|char*|SvPVbyte_nolen|SV* sv |
---|
925 | Like C<SvPV_nolen>, but converts sv to byte representation first if necessary. |
---|
926 | |
---|
927 | =for apidoc Am|char*|SvPVutf8x_force|SV* sv|STRLEN len |
---|
928 | Like C<SvPV_force>, but converts sv to utf8 first if necessary. |
---|
929 | Guarantees to evaluate sv only once; use the more efficient C<SvPVutf8_force> |
---|
930 | otherwise. |
---|
931 | |
---|
932 | =for apidoc Am|char*|SvPVutf8x|SV* sv|STRLEN len |
---|
933 | Like C<SvPV>, but converts sv to utf8 first if necessary. |
---|
934 | Guarantees to evaluate sv only once; use the more efficient C<SvPVutf8> |
---|
935 | otherwise. |
---|
936 | |
---|
937 | =for apidoc Am|char*|SvPVbytex_force|SV* sv|STRLEN len |
---|
938 | Like C<SvPV_force>, but converts sv to byte representation first if necessary. |
---|
939 | Guarantees to evaluate sv only once; use the more efficient C<SvPVbyte_force> |
---|
940 | otherwise. |
---|
941 | |
---|
942 | =for apidoc Am|char*|SvPVbytex|SV* sv|STRLEN len |
---|
943 | Like C<SvPV>, but converts sv to byte representation first if necessary. |
---|
944 | Guarantees to evaluate sv only once; use the more efficient C<SvPVbyte> |
---|
945 | otherwise. |
---|
946 | |
---|
947 | =for apidoc Am|bool|SvIsCOW|SV* sv |
---|
948 | Returns a boolean indicating whether the SV is Copy-On-Write. (either shared |
---|
949 | hash key scalars, or full Copy On Write scalars if 5.9.0 is configured for |
---|
950 | COW) |
---|
951 | |
---|
952 | =for apidoc Am|bool|SvIsCOW_shared_hash|SV* sv |
---|
953 | Returns a boolean indicating whether the SV is Copy-On-Write shared hash key |
---|
954 | scalar. |
---|
955 | |
---|
956 | =cut |
---|
957 | */ |
---|
958 | |
---|
959 | /* Let us hope that bitmaps for UV and IV are the same */ |
---|
960 | #define SvIV(sv) (SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) |
---|
961 | #define SvUV(sv) (SvIOK(sv) ? SvUVX(sv) : sv_2uv(sv)) |
---|
962 | #define SvNV(sv) (SvNOK(sv) ? SvNVX(sv) : sv_2nv(sv)) |
---|
963 | |
---|
964 | /* ----*/ |
---|
965 | |
---|
966 | #define SvPV(sv, lp) SvPV_flags(sv, lp, SV_GMAGIC) |
---|
967 | |
---|
968 | #define SvPV_flags(sv, lp, flags) \ |
---|
969 | ((SvFLAGS(sv) & (SVf_POK)) == SVf_POK \ |
---|
970 | ? ((lp = SvCUR(sv)), SvPVX(sv)) : sv_2pv_flags(sv, &lp, flags)) |
---|
971 | |
---|
972 | #define SvPV_force(sv, lp) SvPV_force_flags(sv, lp, SV_GMAGIC) |
---|
973 | |
---|
974 | #define SvPV_force_nomg(sv, lp) SvPV_force_flags(sv, lp, 0) |
---|
975 | |
---|
976 | #define SvPV_force_flags(sv, lp, flags) \ |
---|
977 | ((SvFLAGS(sv) & (SVf_POK|SVf_THINKFIRST)) == SVf_POK \ |
---|
978 | ? ((lp = SvCUR(sv)), SvPVX(sv)) : sv_pvn_force_flags(sv, &lp, flags)) |
---|
979 | |
---|
980 | #define SvPV_nolen(sv) \ |
---|
981 | ((SvFLAGS(sv) & (SVf_POK)) == SVf_POK \ |
---|
982 | ? SvPVX(sv) : sv_2pv_nolen(sv)) |
---|
983 | |
---|
984 | #define SvPV_nomg(sv, lp) SvPV_flags(sv, lp, 0) |
---|
985 | |
---|
986 | /* ----*/ |
---|
987 | |
---|
988 | #define SvPVutf8(sv, lp) \ |
---|
989 | ((SvFLAGS(sv) & (SVf_POK|SVf_UTF8)) == (SVf_POK|SVf_UTF8) \ |
---|
990 | ? ((lp = SvCUR(sv)), SvPVX(sv)) : sv_2pvutf8(sv, &lp)) |
---|
991 | |
---|
992 | #define SvPVutf8_force(sv, lp) \ |
---|
993 | ((SvFLAGS(sv) & (SVf_POK|SVf_THINKFIRST)) == (SVf_POK|SVf_UTF8) \ |
---|
994 | ? ((lp = SvCUR(sv)), SvPVX(sv)) : sv_pvutf8n_force(sv, &lp)) |
---|
995 | |
---|
996 | |
---|
997 | #define SvPVutf8_nolen(sv) \ |
---|
998 | ((SvFLAGS(sv) & (SVf_POK|SVf_UTF8)) == (SVf_POK|SVf_UTF8)\ |
---|
999 | ? SvPVX(sv) : sv_2pvutf8_nolen(sv)) |
---|
1000 | |
---|
1001 | /* ----*/ |
---|
1002 | |
---|
1003 | #define SvPVbyte(sv, lp) \ |
---|
1004 | ((SvFLAGS(sv) & (SVf_POK|SVf_UTF8)) == (SVf_POK) \ |
---|
1005 | ? ((lp = SvCUR(sv)), SvPVX(sv)) : sv_2pvbyte(sv, &lp)) |
---|
1006 | |
---|
1007 | #define SvPVbyte_force(sv, lp) \ |
---|
1008 | ((SvFLAGS(sv) & (SVf_POK|SVf_UTF8|SVf_THINKFIRST)) == (SVf_POK) \ |
---|
1009 | ? ((lp = SvCUR(sv)), SvPVX(sv)) : sv_pvbyte_force(sv, &lp)) |
---|
1010 | |
---|
1011 | #define SvPVbyte_nolen(sv) \ |
---|
1012 | ((SvFLAGS(sv) & (SVf_POK|SVf_UTF8)) == (SVf_POK)\ |
---|
1013 | ? SvPVX(sv) : sv_2pvbyte_nolen(sv)) |
---|
1014 | |
---|
1015 | |
---|
1016 | |
---|
1017 | /* define FOOx(): idempotent versions of FOO(). If possible, use a local |
---|
1018 | * var to evaluate the arg once; failing that, use a global if possible; |
---|
1019 | * failing that, call a function to do the work |
---|
1020 | */ |
---|
1021 | |
---|
1022 | #define SvPVx_force(sv, lp) sv_pvn_force(sv, &lp) |
---|
1023 | #define SvPVutf8x_force(sv, lp) sv_pvutf8n_force(sv, &lp) |
---|
1024 | #define SvPVbytex_force(sv, lp) sv_pvbyten_force(sv, &lp) |
---|
1025 | |
---|
1026 | #if defined(__GNUC__) && !defined(PERL_GCC_BRACE_GROUPS_FORBIDDEN) |
---|
1027 | |
---|
1028 | # define SvIVx(sv) ({SV *_sv = (SV*)(sv); SvIV(_sv); }) |
---|
1029 | # define SvUVx(sv) ({SV *_sv = (SV*)(sv); SvUV(_sv); }) |
---|
1030 | # define SvNVx(sv) ({SV *_sv = (SV*)(sv); SvNV(_sv); }) |
---|
1031 | # define SvPVx(sv, lp) ({SV *_sv = (sv); SvPV(_sv, lp); }) |
---|
1032 | # define SvPVutf8x(sv, lp) ({SV *_sv = (sv); SvPVutf8(_sv, lp); }) |
---|
1033 | # define SvPVbytex(sv, lp) ({SV *_sv = (sv); SvPVbyte(_sv, lp); }) |
---|
1034 | # define SvTRUE(sv) ( \ |
---|
1035 | !sv \ |
---|
1036 | ? 0 \ |
---|
1037 | : SvPOK(sv) \ |
---|
1038 | ? (({XPV *nxpv = (XPV*)SvANY(sv); \ |
---|
1039 | nxpv && \ |
---|
1040 | (nxpv->xpv_cur > 1 || \ |
---|
1041 | (nxpv->xpv_cur && *nxpv->xpv_pv != '0')); }) \ |
---|
1042 | ? 1 \ |
---|
1043 | : 0) \ |
---|
1044 | : \ |
---|
1045 | SvIOK(sv) \ |
---|
1046 | ? SvIVX(sv) != 0 \ |
---|
1047 | : SvNOK(sv) \ |
---|
1048 | ? SvNVX(sv) != 0.0 \ |
---|
1049 | : sv_2bool(sv) ) |
---|
1050 | # define SvTRUEx(sv) ({SV *_sv = (sv); SvTRUE(_sv); }) |
---|
1051 | |
---|
1052 | #else /* __GNUC__ */ |
---|
1053 | |
---|
1054 | # ifdef USE_5005THREADS |
---|
1055 | # define SvIVx(sv) sv_iv(sv) |
---|
1056 | # define SvUVx(sv) sv_uv(sv) |
---|
1057 | # define SvNVx(sv) sv_nv(sv) |
---|
1058 | # define SvPVx(sv, lp) sv_pvn(sv, &lp) |
---|
1059 | # define SvPVutf8x(sv, lp) sv_pvutf8n(sv, &lp) |
---|
1060 | # define SvPVbytex(sv, lp) sv_pvbyten(sv, &lp) |
---|
1061 | # define SvTRUE(sv) SvTRUEx(sv) |
---|
1062 | # define SvTRUEx(sv) sv_true(sv) |
---|
1063 | |
---|
1064 | # else /* USE_5005THREADS */ |
---|
1065 | |
---|
1066 | /* These inlined macros use globals, which will require a thread |
---|
1067 | * declaration in user code, so we avoid them under threads */ |
---|
1068 | |
---|
1069 | # define SvIVx(sv) ((PL_Sv = (sv)), SvIV(PL_Sv)) |
---|
1070 | # define SvUVx(sv) ((PL_Sv = (sv)), SvUV(PL_Sv)) |
---|
1071 | # define SvNVx(sv) ((PL_Sv = (sv)), SvNV(PL_Sv)) |
---|
1072 | # define SvPVx(sv, lp) ((PL_Sv = (sv)), SvPV(PL_Sv, lp)) |
---|
1073 | # define SvPVutf8x(sv, lp) ((PL_Sv = (sv)), SvPVutf8(PL_Sv, lp)) |
---|
1074 | # define SvPVbytex(sv, lp) ((PL_Sv = (sv)), SvPVbyte(PL_Sv, lp)) |
---|
1075 | # define SvTRUE(sv) ( \ |
---|
1076 | !sv \ |
---|
1077 | ? 0 \ |
---|
1078 | : SvPOK(sv) \ |
---|
1079 | ? ((PL_Xpv = (XPV*)SvANY(sv)) && \ |
---|
1080 | (PL_Xpv->xpv_cur > 1 || \ |
---|
1081 | (PL_Xpv->xpv_cur && *PL_Xpv->xpv_pv != '0')) \ |
---|
1082 | ? 1 \ |
---|
1083 | : 0) \ |
---|
1084 | : \ |
---|
1085 | SvIOK(sv) \ |
---|
1086 | ? SvIVX(sv) != 0 \ |
---|
1087 | : SvNOK(sv) \ |
---|
1088 | ? SvNVX(sv) != 0.0 \ |
---|
1089 | : sv_2bool(sv) ) |
---|
1090 | # define SvTRUEx(sv) ((PL_Sv = (sv)), SvTRUE(PL_Sv)) |
---|
1091 | # endif /* USE_5005THREADS */ |
---|
1092 | #endif /* __GNU__ */ |
---|
1093 | |
---|
1094 | #define SvIsCOW(sv) ((SvFLAGS(sv) & (SVf_FAKE | SVf_READONLY)) == \ |
---|
1095 | (SVf_FAKE | SVf_READONLY)) |
---|
1096 | #define SvIsCOW_shared_hash(sv) (SvIsCOW(sv) && SvLEN(sv) == 0) |
---|
1097 | |
---|
1098 | /* flag values for sv_*_flags functions */ |
---|
1099 | #define SV_IMMEDIATE_UNREF 1 |
---|
1100 | #define SV_GMAGIC 2 |
---|
1101 | #define SV_COW_DROP_PV 4 /* Unused in Perl 5.8.x */ |
---|
1102 | #define SV_UTF8_NO_ENCODING 8 |
---|
1103 | |
---|
1104 | /* all these 'functions' are now just macros */ |
---|
1105 | |
---|
1106 | #define sv_pv(sv) SvPV_nolen(sv) |
---|
1107 | #define sv_pvutf8(sv) SvPVutf8_nolen(sv) |
---|
1108 | #define sv_pvbyte(sv) SvPVbyte_nolen(sv) |
---|
1109 | |
---|
1110 | #define sv_pvn_force_nomg(sv, lp) sv_pvn_force_flags(sv, lp, 0) |
---|
1111 | #define sv_utf8_upgrade_nomg(sv) sv_utf8_upgrade_flags(sv, 0) |
---|
1112 | #define sv_catpvn_nomg(dsv, sstr, slen) sv_catpvn_flags(dsv, sstr, slen, 0) |
---|
1113 | #define sv_setsv(dsv, ssv) sv_setsv_flags(dsv, ssv, SV_GMAGIC) |
---|
1114 | #define sv_setsv_nomg(dsv, ssv) sv_setsv_flags(dsv, ssv, 0) |
---|
1115 | #define sv_catsv(dsv, ssv) sv_catsv_flags(dsv, ssv, SV_GMAGIC) |
---|
1116 | #define sv_catsv_nomg(dsv, ssv) sv_catsv_flags(dsv, ssv, 0) |
---|
1117 | #define sv_catpvn(dsv, sstr, slen) sv_catpvn_flags(dsv, sstr, slen, SV_GMAGIC) |
---|
1118 | #define sv_2pv(sv, lp) sv_2pv_flags(sv, lp, SV_GMAGIC) |
---|
1119 | #define sv_2pv_nomg(sv, lp) sv_2pv_flags(sv, lp, 0) |
---|
1120 | #define sv_pvn_force(sv, lp) sv_pvn_force_flags(sv, lp, SV_GMAGIC) |
---|
1121 | #define sv_utf8_upgrade(sv) sv_utf8_upgrade_flags(sv, SV_GMAGIC) |
---|
1122 | |
---|
1123 | /* Should be named SvCatPVN_utf8_upgrade? */ |
---|
1124 | #define sv_catpvn_utf8_upgrade(dsv, sstr, slen, nsv) \ |
---|
1125 | STMT_START { \ |
---|
1126 | if (!(nsv)) \ |
---|
1127 | nsv = sv_2mortal(newSVpvn(sstr, slen)); \ |
---|
1128 | else \ |
---|
1129 | sv_setpvn(nsv, sstr, slen); \ |
---|
1130 | SvUTF8_off(nsv); \ |
---|
1131 | sv_utf8_upgrade(nsv); \ |
---|
1132 | sv_catsv(dsv, nsv); \ |
---|
1133 | } STMT_END |
---|
1134 | |
---|
1135 | /* |
---|
1136 | =for apidoc Am|SV*|newRV_inc|SV* sv |
---|
1137 | |
---|
1138 | Creates an RV wrapper for an SV. The reference count for the original SV is |
---|
1139 | incremented. |
---|
1140 | |
---|
1141 | =cut |
---|
1142 | */ |
---|
1143 | |
---|
1144 | #define newRV_inc(sv) newRV(sv) |
---|
1145 | |
---|
1146 | /* the following macros update any magic values this sv is associated with */ |
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1147 | |
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1148 | /* |
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1149 | =head1 Magical Functions |
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1150 | |
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1151 | =for apidoc Am|void|SvGETMAGIC|SV* sv |
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1152 | Invokes C<mg_get> on an SV if it has 'get' magic. This macro evaluates its |
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1153 | argument more than once. |
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1154 | |
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1155 | =for apidoc Am|void|SvSETMAGIC|SV* sv |
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1156 | Invokes C<mg_set> on an SV if it has 'set' magic. This macro evaluates its |
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1157 | argument more than once. |
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1158 | |
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1159 | =for apidoc Am|void|SvSetSV|SV* dsb|SV* ssv |
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1160 | Calls C<sv_setsv> if dsv is not the same as ssv. May evaluate arguments |
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1161 | more than once. |
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1162 | |
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1163 | =for apidoc Am|void|SvSetSV_nosteal|SV* dsv|SV* ssv |
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1164 | Calls a non-destructive version of C<sv_setsv> if dsv is not the same as |
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1165 | ssv. May evaluate arguments more than once. |
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1166 | |
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1167 | =for apidoc Am|void|SvSetMagicSV|SV* dsb|SV* ssv |
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1168 | Like C<SvSetSV>, but does any set magic required afterwards. |
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1169 | |
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1170 | =for apidoc Am|void|SvSetMagicSV_nosteal|SV* dsv|SV* ssv |
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1171 | Like C<SvSetMagicSV>, but does any set magic required afterwards. |
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1172 | |
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1173 | =for apidoc Am|void|SvSHARE|SV* sv |
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1174 | Arranges for sv to be shared between threads if a suitable module |
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1175 | has been loaded. |
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1176 | |
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1177 | =for apidoc Am|void|SvLOCK|SV* sv |
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1178 | Arranges for a mutual exclusion lock to be obtained on sv if a suitable module |
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1179 | has been loaded. |
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1180 | |
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1181 | =for apidoc Am|void|SvUNLOCK|SV* sv |
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1182 | Releases a mutual exclusion lock on sv if a suitable module |
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1183 | has been loaded. |
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1184 | |
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1185 | =head1 SV Manipulation Functions |
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1186 | |
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1187 | =for apidoc Am|char *|SvGROW|SV* sv|STRLEN len |
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1188 | Expands the character buffer in the SV so that it has room for the |
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1189 | indicated number of bytes (remember to reserve space for an extra trailing |
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1190 | NUL character). Calls C<sv_grow> to perform the expansion if necessary. |
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1191 | Returns a pointer to the character buffer. |
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1192 | |
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1193 | =cut |
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1194 | */ |
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1195 | |
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1196 | #define SvSHARE(sv) CALL_FPTR(PL_sharehook)(aTHX_ sv) |
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1197 | #define SvLOCK(sv) CALL_FPTR(PL_lockhook)(aTHX_ sv) |
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1198 | #define SvUNLOCK(sv) CALL_FPTR(PL_unlockhook)(aTHX_ sv) |
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1199 | |
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1200 | #define SvGETMAGIC(x) STMT_START { if (SvGMAGICAL(x)) mg_get(x); } STMT_END |
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1201 | #define SvSETMAGIC(x) STMT_START { if (SvSMAGICAL(x)) mg_set(x); } STMT_END |
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1202 | |
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1203 | #define SvSetSV_and(dst,src,finally) \ |
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1204 | STMT_START { \ |
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1205 | if ((dst) != (src)) { \ |
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1206 | sv_setsv(dst, src); \ |
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1207 | finally; \ |
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1208 | } \ |
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1209 | } STMT_END |
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1210 | #define SvSetSV_nosteal_and(dst,src,finally) \ |
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1211 | STMT_START { \ |
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1212 | if ((dst) != (src)) { \ |
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1213 | U32 tMpF = SvFLAGS(src) & SVs_TEMP; \ |
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1214 | SvTEMP_off(src); \ |
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1215 | sv_setsv(dst, src); \ |
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1216 | SvFLAGS(src) |= tMpF; \ |
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1217 | finally; \ |
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1218 | } \ |
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1219 | } STMT_END |
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1220 | |
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1221 | #define SvSetSV(dst,src) \ |
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1222 | SvSetSV_and(dst,src,/*nothing*/;) |
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1223 | #define SvSetSV_nosteal(dst,src) \ |
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1224 | SvSetSV_nosteal_and(dst,src,/*nothing*/;) |
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1225 | |
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1226 | #define SvSetMagicSV(dst,src) \ |
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1227 | SvSetSV_and(dst,src,SvSETMAGIC(dst)) |
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1228 | #define SvSetMagicSV_nosteal(dst,src) \ |
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1229 | SvSetSV_nosteal_and(dst,src,SvSETMAGIC(dst)) |
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1230 | |
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1231 | |
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1232 | #if !defined(SKIP_DEBUGGING) |
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1233 | #define SvPEEK(sv) sv_peek(sv) |
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1234 | #else |
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1235 | #define SvPEEK(sv) "" |
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1236 | #endif |
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1237 | |
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1238 | #define SvIMMORTAL(sv) ((sv)==&PL_sv_undef || (sv)==&PL_sv_yes || (sv)==&PL_sv_no || (sv)==&PL_sv_placeholder) |
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1239 | |
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1240 | #define boolSV(b) ((b) ? &PL_sv_yes : &PL_sv_no) |
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1241 | |
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1242 | #define isGV(sv) (SvTYPE(sv) == SVt_PVGV) |
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1243 | |
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1244 | #define SvGROW(sv,len) (SvLEN(sv) < (len) ? sv_grow(sv,len) : SvPVX(sv)) |
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1245 | #define Sv_Grow sv_grow |
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1246 | |
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1247 | #define CLONEf_COPY_STACKS 1 |
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1248 | #define CLONEf_KEEP_PTR_TABLE 2 |
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1249 | #define CLONEf_CLONE_HOST 4 |
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1250 | #define CLONEf_JOIN_IN 8 |
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1251 | |
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1252 | struct clone_params { |
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1253 | AV* stashes; |
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1254 | UV flags; |
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1255 | PerlInterpreter *proto_perl; |
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1256 | }; |
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1257 | |
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1258 | #define SV_CHECK_THINKFIRST(sv) if (SvTHINKFIRST(sv)) sv_force_normal(sv) |
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