[14544] | 1 | #include "EXTERN.h" |
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| 2 | #define PERL_IN_XSUTILS_C |
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| 3 | #include "perl.h" |
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| 4 | |
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| 5 | /* |
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| 6 | * Contributed by Spider Boardman (spider.boardman@orb.nashua.nh.us). |
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| 7 | */ |
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| 8 | |
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| 9 | /* package attributes; */ |
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| 10 | void XS_attributes__warn_reserved(pTHXo_ CV *cv); |
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| 11 | void XS_attributes_reftype(pTHXo_ CV *cv); |
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| 12 | void XS_attributes__modify_attrs(pTHXo_ CV *cv); |
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| 13 | void XS_attributes__guess_stash(pTHXo_ CV *cv); |
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| 14 | void XS_attributes__fetch_attrs(pTHXo_ CV *cv); |
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| 15 | void XS_attributes_bootstrap(pTHXo_ CV *cv); |
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| 16 | |
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| 17 | |
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| 18 | /* |
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| 19 | * Note that only ${pkg}::bootstrap definitions should go here. |
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| 20 | * This helps keep down the start-up time, which is especially |
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| 21 | * relevant for users who don't invoke any features which are |
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| 22 | * (partially) implemented here. |
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| 23 | * |
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| 24 | * The various bootstrap definitions can take care of doing |
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| 25 | * package-specific newXS() calls. Since the layout of the |
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| 26 | * bundled *.pm files is in a version-specific directory, |
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| 27 | * version checks in these bootstrap calls are optional. |
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| 28 | */ |
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| 29 | |
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| 30 | void |
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| 31 | Perl_boot_core_xsutils(pTHX) |
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| 32 | { |
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| 33 | char *file = __FILE__; |
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| 34 | |
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| 35 | newXS("attributes::bootstrap", XS_attributes_bootstrap, file); |
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| 36 | } |
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| 37 | |
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| 38 | #include "XSUB.h" |
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| 39 | |
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| 40 | static int |
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| 41 | modify_SV_attributes(pTHXo_ SV *sv, SV **retlist, SV **attrlist, int numattrs) |
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| 42 | { |
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| 43 | SV *attr; |
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| 44 | char *name; |
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| 45 | STRLEN len; |
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| 46 | bool negated; |
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| 47 | int nret; |
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| 48 | |
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| 49 | for (nret = 0 ; numattrs && (attr = *attrlist++); numattrs--) { |
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| 50 | name = SvPV(attr, len); |
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| 51 | if ((negated = (*name == '-'))) { |
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| 52 | name++; |
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| 53 | len--; |
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| 54 | } |
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| 55 | switch (SvTYPE(sv)) { |
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| 56 | case SVt_PVCV: |
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| 57 | switch ((int)len) { |
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| 58 | case 6: |
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| 59 | switch (*name) { |
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| 60 | case 'l': |
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| 61 | #ifdef CVf_LVALUE |
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| 62 | if (strEQ(name, "lvalue")) { |
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| 63 | if (negated) |
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| 64 | CvFLAGS((CV*)sv) &= ~CVf_LVALUE; |
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| 65 | else |
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| 66 | CvFLAGS((CV*)sv) |= CVf_LVALUE; |
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| 67 | continue; |
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| 68 | } |
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| 69 | #endif /* defined CVf_LVALUE */ |
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| 70 | if (strEQ(name, "locked")) { |
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| 71 | if (negated) |
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| 72 | CvFLAGS((CV*)sv) &= ~CVf_LOCKED; |
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| 73 | else |
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| 74 | CvFLAGS((CV*)sv) |= CVf_LOCKED; |
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| 75 | continue; |
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| 76 | } |
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| 77 | break; |
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| 78 | case 'm': |
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| 79 | if (strEQ(name, "method")) { |
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| 80 | if (negated) |
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| 81 | CvFLAGS((CV*)sv) &= ~CVf_METHOD; |
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| 82 | else |
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| 83 | CvFLAGS((CV*)sv) |= CVf_METHOD; |
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| 84 | continue; |
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| 85 | } |
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| 86 | break; |
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| 87 | } |
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| 88 | break; |
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| 89 | } |
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| 90 | break; |
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| 91 | default: |
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| 92 | /* nothing, yet */ |
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| 93 | break; |
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| 94 | } |
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| 95 | /* anything recognized had a 'continue' above */ |
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| 96 | *retlist++ = attr; |
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| 97 | nret++; |
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| 98 | } |
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| 99 | |
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| 100 | return nret; |
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| 101 | } |
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| 102 | |
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| 103 | |
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| 104 | |
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| 105 | /* package attributes; */ |
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| 106 | |
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| 107 | XS(XS_attributes_bootstrap) |
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| 108 | { |
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| 109 | dXSARGS; |
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| 110 | char *file = __FILE__; |
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| 111 | |
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| 112 | newXSproto("attributes::_warn_reserved", XS_attributes__warn_reserved, file, ""); |
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| 113 | newXS("attributes::_modify_attrs", XS_attributes__modify_attrs, file); |
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| 114 | newXSproto("attributes::_guess_stash", XS_attributes__guess_stash, file, "$"); |
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| 115 | newXSproto("attributes::_fetch_attrs", XS_attributes__fetch_attrs, file, "$"); |
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| 116 | newXSproto("attributes::reftype", XS_attributes_reftype, file, "$"); |
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| 117 | |
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| 118 | XSRETURN(0); |
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| 119 | } |
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| 120 | |
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| 121 | XS(XS_attributes__modify_attrs) |
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| 122 | { |
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| 123 | dXSARGS; |
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| 124 | SV *rv, *sv; |
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| 125 | |
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| 126 | if (items < 1) { |
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| 127 | usage: |
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| 128 | Perl_croak(aTHX_ |
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| 129 | "Usage: attributes::_modify_attrs $reference, @attributes"); |
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| 130 | } |
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| 131 | |
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| 132 | rv = ST(0); |
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| 133 | if (!(SvOK(rv) && SvROK(rv))) |
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| 134 | goto usage; |
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| 135 | sv = SvRV(rv); |
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| 136 | if (items > 1) |
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| 137 | XSRETURN(modify_SV_attributes(aTHXo_ sv, &ST(0), &ST(1), items-1)); |
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| 138 | |
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| 139 | XSRETURN(0); |
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| 140 | } |
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| 141 | |
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| 142 | XS(XS_attributes__fetch_attrs) |
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| 143 | { |
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| 144 | dXSARGS; |
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| 145 | SV *rv, *sv; |
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| 146 | cv_flags_t cvflags; |
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| 147 | |
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| 148 | if (items != 1) { |
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| 149 | usage: |
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| 150 | Perl_croak(aTHX_ |
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| 151 | "Usage: attributes::_fetch_attrs $reference"); |
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| 152 | } |
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| 153 | |
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| 154 | rv = ST(0); |
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| 155 | SP -= items; |
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| 156 | if (!(SvOK(rv) && SvROK(rv))) |
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| 157 | goto usage; |
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| 158 | sv = SvRV(rv); |
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| 159 | |
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| 160 | switch (SvTYPE(sv)) { |
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| 161 | case SVt_PVCV: |
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| 162 | cvflags = CvFLAGS((CV*)sv); |
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| 163 | if (cvflags & CVf_LOCKED) |
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| 164 | XPUSHs(sv_2mortal(newSVpvn("locked", 6))); |
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| 165 | #ifdef CVf_LVALUE |
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| 166 | if (cvflags & CVf_LVALUE) |
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| 167 | XPUSHs(sv_2mortal(newSVpvn("lvalue", 6))); |
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| 168 | #endif |
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| 169 | if (cvflags & CVf_METHOD) |
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| 170 | XPUSHs(sv_2mortal(newSVpvn("method", 6))); |
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| 171 | break; |
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| 172 | default: |
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| 173 | break; |
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| 174 | } |
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| 175 | |
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| 176 | PUTBACK; |
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| 177 | } |
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| 178 | |
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| 179 | XS(XS_attributes__guess_stash) |
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| 180 | { |
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| 181 | dXSARGS; |
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| 182 | SV *rv, *sv; |
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| 183 | #ifdef dXSTARGET |
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| 184 | dXSTARGET; |
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| 185 | #else |
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| 186 | SV * TARG = sv_newmortal(); |
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| 187 | #endif |
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| 188 | |
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| 189 | if (items != 1) { |
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| 190 | usage: |
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| 191 | Perl_croak(aTHX_ |
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| 192 | "Usage: attributes::_guess_stash $reference"); |
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| 193 | } |
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| 194 | |
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| 195 | rv = ST(0); |
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| 196 | ST(0) = TARG; |
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| 197 | if (!(SvOK(rv) && SvROK(rv))) |
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| 198 | goto usage; |
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| 199 | sv = SvRV(rv); |
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| 200 | |
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| 201 | if (SvOBJECT(sv)) |
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| 202 | sv_setpv(TARG, HvNAME(SvSTASH(sv))); |
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| 203 | #if 0 /* this was probably a bad idea */ |
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| 204 | else if (SvPADMY(sv)) |
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| 205 | sv_setsv(TARG, &PL_sv_no); /* unblessed lexical */ |
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| 206 | #endif |
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| 207 | else { |
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| 208 | HV *stash = Nullhv; |
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| 209 | switch (SvTYPE(sv)) { |
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| 210 | case SVt_PVCV: |
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| 211 | if (CvGV(sv) && isGV(CvGV(sv)) && GvSTASH(CvGV(sv)) && |
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| 212 | HvNAME(GvSTASH(CvGV(sv)))) |
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| 213 | stash = GvSTASH(CvGV(sv)); |
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| 214 | else if (/* !CvANON(sv) && */ CvSTASH(sv) && HvNAME(CvSTASH(sv))) |
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| 215 | stash = CvSTASH(sv); |
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| 216 | break; |
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| 217 | case SVt_PVMG: |
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| 218 | if (!(SvFAKE(sv) && SvTIED_mg(sv, '*'))) |
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| 219 | break; |
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| 220 | /*FALLTHROUGH*/ |
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| 221 | case SVt_PVGV: |
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| 222 | if (GvGP(sv) && GvESTASH((GV*)sv) && HvNAME(GvESTASH((GV*)sv))) |
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| 223 | stash = GvESTASH((GV*)sv); |
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| 224 | break; |
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| 225 | default: |
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| 226 | break; |
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| 227 | } |
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| 228 | if (stash) |
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| 229 | sv_setpv(TARG, HvNAME(stash)); |
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| 230 | } |
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| 231 | |
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| 232 | #ifdef dXSTARGET |
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| 233 | SvSETMAGIC(TARG); |
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| 234 | #endif |
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| 235 | XSRETURN(1); |
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| 236 | } |
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| 237 | |
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| 238 | XS(XS_attributes_reftype) |
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| 239 | { |
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| 240 | dXSARGS; |
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| 241 | SV *rv, *sv; |
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| 242 | #ifdef dXSTARGET |
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| 243 | dXSTARGET; |
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| 244 | #else |
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| 245 | SV * TARG = sv_newmortal(); |
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| 246 | #endif |
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| 247 | |
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| 248 | if (items != 1) { |
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| 249 | usage: |
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| 250 | Perl_croak(aTHX_ |
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| 251 | "Usage: attributes::reftype $reference"); |
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| 252 | } |
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| 253 | |
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| 254 | rv = ST(0); |
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| 255 | ST(0) = TARG; |
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| 256 | if (!(SvOK(rv) && SvROK(rv))) |
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| 257 | goto usage; |
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| 258 | sv = SvRV(rv); |
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| 259 | sv_setpv(TARG, sv_reftype(sv, 0)); |
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| 260 | #ifdef dXSTARGET |
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| 261 | SvSETMAGIC(TARG); |
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| 262 | #endif |
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| 263 | |
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| 264 | XSRETURN(1); |
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| 265 | } |
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| 266 | |
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| 267 | XS(XS_attributes__warn_reserved) |
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| 268 | { |
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| 269 | dXSARGS; |
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| 270 | #ifdef dXSTARGET |
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| 271 | dXSTARGET; |
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| 272 | #else |
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| 273 | SV * TARG = sv_newmortal(); |
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| 274 | #endif |
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| 275 | |
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| 276 | if (items != 0) { |
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| 277 | Perl_croak(aTHX_ |
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| 278 | "Usage: attributes::_warn_reserved ()"); |
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| 279 | } |
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| 280 | |
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| 281 | EXTEND(SP,1); |
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| 282 | ST(0) = TARG; |
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| 283 | sv_setiv(TARG, ckWARN(WARN_RESERVED) != 0); |
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| 284 | #ifdef dXSTARGET |
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| 285 | SvSETMAGIC(TARG); |
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| 286 | #endif |
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| 287 | |
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| 288 | XSRETURN(1); |
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| 289 | } |
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| 290 | |
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