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stmt |
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cond |
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pod |
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#define PERL_NO_GET_CONTEXT |
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#include "EXTERN.h" |
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#include "perl.h" |
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#include "XSUB.h" |
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#include "ppport.h" |
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#include "const-c.inc" |
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#define PERL_VERSION_DECIMAL(r,v,s) (r*1000000 + v*1000 + s) |
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#define PERL_DECIMAL_VERSION PERL_VERSION_DECIMAL(PERL_REVISION,PERL_VERSION,PERL_SUBVERSION) |
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#define PERL_VERSION_GE(r,v,s) (PERL_DECIMAL_VERSION >= PERL_VERSION_DECIMAL(r,v,s)) |
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#ifndef G_WANT |
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#define G_WANT (G_VOID|G_SCALAR|G_ARRAY) |
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#endif |
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struct block_symbol_t { |
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CV * cv; |
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SV * symbol_SV; |
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}; |
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23
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static Perl_ppaddr_t return_ppaddr; |
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static struct block_symbol_t * block_symbols; |
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static int block_symbols_capacity, block_symbols_n; |
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static SV * regex_match_sv; |
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5
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static OP * my_pp_deep_ret(pTHX){ |
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5
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dSP; POPs; |
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32
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5
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50
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IV depth = SvIV(PL_stack_base[TOPMARK+1]); |
33
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20
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100
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for(SV ** p = PL_stack_base+TOPMARK+1; p
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15
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*p = *(p+1); |
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5
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POPs; |
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5
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100
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if( depth <= 0 ) |
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1
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RETURN; |
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OP * next_op; |
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100
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while( depth-- ) |
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next_op = return_ppaddr(aTHX); |
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RETURNOP(next_op); |
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} |
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8
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static OP * my_pp_sym_ret(pTHX){ |
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8
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dSP; POPs; |
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50
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SV * symbol_SV = PL_stack_base[TOPMARK+1]; |
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32
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100
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for(SV ** p = PL_stack_base+TOPMARK+1; p
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*p = *(p+1); |
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8
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POPs; |
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56
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while(TRUE){ |
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56
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for(PERL_CONTEXT * cx = &cxstack[cxstack_ix]; cx>=cxstack; --cx){ |
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switch( CxTYPE(cx) ){ |
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default: |
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0
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continue; |
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case CXt_SUB: |
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#if PERL_VERSION_GE(5,18,0) |
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56
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50
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if( cx->cx_type & CXp_SUB_RE_FAKE ) |
64
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0
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continue; |
65
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#endif |
66
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193
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100
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for(struct block_symbol_t *p = block_symbols+block_symbols_n-1; p>=block_symbols; --p) |
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145
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100
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if( p->cv == cx->blk_sub.cv ){ |
68
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24
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100
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if( !SvOK(p->symbol_SV) ) |
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50
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50
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69
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4
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RETURNOP(return_ppaddr(aTHX)); |
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#if PERL_VERSION_GE(5,10,0) |
71
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20
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100
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if( SvRXOK(p->symbol_SV) ){ |
72
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7
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50
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PUSHMARK(SP); |
73
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7
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50
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EXTEND(SP, 2); |
74
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7
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PUSHs(p->symbol_SV); |
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7
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PUSHs(symbol_SV); |
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7
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PUTBACK; |
77
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7
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call_sv(regex_match_sv, G_SCALAR); |
78
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7
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SPAGAIN; |
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7
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50
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IV match_res = POPi; |
80
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7
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PUTBACK; |
81
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82
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7
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100
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if( match_res ) |
83
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7
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RETURNOP(return_ppaddr(aTHX)); |
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} |
85
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else |
86
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#endif |
87
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13
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100
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if( sv_cmp(p->symbol_SV, symbol_SV)==0 ) |
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2
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RETURNOP(return_ppaddr(aTHX)); |
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} |
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case CXt_EVAL: |
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case CXt_FORMAT: |
92
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48
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goto DO_RETURN; |
93
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} |
94
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} |
95
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DO_RETURN: |
96
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48
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return_ppaddr(aTHX); |
97
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48
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} |
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} |
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100
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1
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static OP * deep_ret_check(pTHX_ OP * o, GV * namegv, SV * ckobj){ |
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1
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o->op_ppaddr = my_pp_deep_ret; |
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1
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return o; |
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} |
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105
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1
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static OP * sym_ret_check(pTHX_ OP * o, GV * namegv, SV * ckobj){ |
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1
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o->op_ppaddr = my_pp_sym_ret; |
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1
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return o; |
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} |
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110
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static int guard_free(pTHX_ SV * guard_SV, MAGIC * mg){ |
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for(struct block_symbol_t * p=block_symbols+block_symbols_n-1; p>=block_symbols; --p) |
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50
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if( (IV)p->cv == (IV)mg->mg_ptr ){ |
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35
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--block_symbols_n; |
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35
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*p = block_symbols[block_symbols_n]; |
115
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35
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break; |
116
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} |
117
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35
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return 0; |
118
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} |
119
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120
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static MGVTBL guard_vtbl = { |
121
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0, 0, 0, 0, |
122
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guard_free |
123
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}; |
124
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125
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#if !PERL_VERSION_GE(5,14,0) |
126
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static CV* my_deep_ret_cv; |
127
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static CV* my_sym_ret_cv; |
128
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static OP* (*orig_entersub_check)(pTHX_ OP*); |
129
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static OP* my_entersub_check(pTHX_ OP* o){ |
130
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CV *cv = NULL; |
131
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OP *cvop = OpSIBLING(((OpSIBLING(cUNOPo->op_first)) ? cUNOPo : ((UNOP*)cUNOPo->op_first))->op_first); |
132
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while( OpSIBLING(cvop) ) |
133
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cvop = OpSIBLING(cvop); |
134
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if( cvop->op_type == OP_RV2CV && !(o->op_private & OPpENTERSUB_AMPER) ){ |
135
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SVOP *tmpop = (SVOP*)((UNOP*)cvop)->op_first; |
136
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switch (tmpop->op_type) { |
137
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case OP_GV: { |
138
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GV *gv = cGVOPx_gv(tmpop); |
139
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cv = GvCVu(gv); |
140
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if (!cv) |
141
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tmpop->op_private |= OPpEARLY_CV; |
142
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} break; |
143
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case OP_CONST: { |
144
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SV *sv = cSVOPx_sv(tmpop); |
145
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if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVCV) |
146
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cv = (CV*)SvRV(sv); |
147
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} break; |
148
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} |
149
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if( cv==my_deep_ret_cv ) |
150
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o->op_ppaddr = my_pp_deep_ret; |
151
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if( cv==my_sym_ret_cv ) |
152
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o->op_ppaddr = my_pp_sym_ret; |
153
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} |
154
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return orig_entersub_check(aTHX_ o); |
155
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} |
156
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#endif |
157
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158
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MODULE = Return::Deep PACKAGE = Return::Deep |
159
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160
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INCLUDE: const-xs.inc |
161
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162
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void add_bound(SV * act_SV, SV * symbol_SV) |
163
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PPCODE: |
164
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35
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50
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if( !(SvOK(act_SV) && SvROK(act_SV) && SvTYPE(SvRV(act_SV))==SVt_PVCV) ) |
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0
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0
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50
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50
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165
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0
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croak("there should be a code block"); |
166
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167
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35
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CV * act_CV = (CV*) SvRV(act_SV); |
168
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35
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SV * guard_SV = newSV(0); |
169
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170
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35
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sv_magicext(guard_SV, NULL, PERL_MAGIC_ext, &guard_vtbl, (char*) act_CV, 0); |
171
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172
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35
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50
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if( block_symbols_n >= block_symbols_capacity ){ |
173
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0
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block_symbols_capacity *= 2; |
174
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0
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0
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Renew(block_symbols, block_symbols_capacity, struct block_symbol_t); |
175
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} |
176
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35
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block_symbols[block_symbols_n].cv = act_CV; |
177
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35
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block_symbols[block_symbols_n].symbol_SV = symbol_SV; |
178
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35
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++block_symbols_n; |
179
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180
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35
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PUSHs(sv_2mortal(newRV_noinc(guard_SV))); |
181
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182
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void deep_wantarray(IV depth) |
183
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PPCODE: |
184
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12
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50
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if( depth<1 ) |
185
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0
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croak("deep_wantarray with non-positive depth"); |
186
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187
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12
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PERL_CONTEXT * cx = &cxstack[cxstack_ix]; |
188
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79
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100
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for(; cx>=cxstack; --cx) |
189
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77
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switch( CxTYPE(cx) ){ |
190
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default: |
191
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2
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continue; |
192
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case CXt_SUB: |
193
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#if PERL_VERSION_GE(5,18,0) |
194
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75
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50
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if( cx->cx_type & CXp_SUB_RE_FAKE ) |
195
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0
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continue; |
196
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#endif |
197
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case CXt_EVAL: |
198
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case CXt_FORMAT: |
199
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75
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100
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if( --depth <= 0 ) |
200
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10
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goto FOUND; |
201
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} |
202
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FOUND: |
203
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204
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12
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100
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if( cx
|
205
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2
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PUSHs(&PL_sv_undef); |
206
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else |
207
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10
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switch(cx->blk_gimme & G_WANT){ |
208
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case G_VOID: |
209
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3
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PUSHs(&PL_sv_undef); |
210
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3
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break; |
211
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case G_SCALAR: |
212
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4
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PUSHs(&PL_sv_no); |
213
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4
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break; |
214
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|
|
case G_ARRAY: |
215
|
3
|
|
|
|
|
|
PUSHs(&PL_sv_yes); |
216
|
3
|
|
|
|
|
|
break; |
217
|
|
|
|
|
|
|
default: |
218
|
0
|
|
|
|
|
|
croak("Unknown wantarray"); |
219
|
|
|
|
|
|
|
} |
220
|
|
|
|
|
|
|
|
221
|
|
|
|
|
|
|
void sym_wantarray(SV * symbol_SV) |
222
|
|
|
|
|
|
|
PPCODE: |
223
|
4
|
|
|
|
|
|
PERL_CONTEXT * cx = &cxstack[cxstack_ix]; |
224
|
27
|
100
|
|
|
|
|
for(; cx>=cxstack; --cx){ |
225
|
26
|
|
|
|
|
|
switch( CxTYPE(cx) ){ |
226
|
|
|
|
|
|
|
default: |
227
|
1
|
|
|
|
|
|
continue; |
228
|
|
|
|
|
|
|
case CXt_SUB: |
229
|
|
|
|
|
|
|
#if PERL_VERSION_GE(5,18,0) |
230
|
25
|
50
|
|
|
|
|
if( cx->cx_type & CXp_SUB_RE_FAKE ) |
231
|
0
|
|
|
|
|
|
continue; |
232
|
|
|
|
|
|
|
#endif |
233
|
94
|
100
|
|
|
|
|
for(struct block_symbol_t *p = block_symbols+block_symbols_n-1; p>=block_symbols; --p) |
234
|
72
|
100
|
|
|
|
|
if( p->cv == cx->blk_sub.cv ){ |
235
|
9
|
50
|
|
|
|
|
if( !SvOK(p->symbol_SV) ) |
|
|
0
|
|
|
|
|
|
|
|
0
|
|
|
|
|
|
236
|
0
|
|
|
|
|
|
break; |
237
|
|
|
|
|
|
|
#if PERL_VERSION_GE(5,10,0) |
238
|
9
|
50
|
|
|
|
|
if( SvRXOK(p->symbol_SV) ){ |
239
|
0
|
0
|
|
|
|
|
PUSHMARK(SP); |
240
|
0
|
0
|
|
|
|
|
EXTEND(SP, 2); |
241
|
0
|
|
|
|
|
|
PUSHs(p->symbol_SV); |
242
|
0
|
|
|
|
|
|
PUSHs(symbol_SV); |
243
|
0
|
|
|
|
|
|
PUTBACK; |
244
|
0
|
|
|
|
|
|
call_sv(regex_match_sv, G_SCALAR); |
245
|
0
|
|
|
|
|
|
SPAGAIN; |
246
|
0
|
0
|
|
|
|
|
IV match_res = POPi; |
247
|
0
|
|
|
|
|
|
PUTBACK; |
248
|
|
|
|
|
|
|
|
249
|
0
|
0
|
|
|
|
|
if( match_res ) |
250
|
0
|
|
|
|
|
|
goto FOUND; |
251
|
|
|
|
|
|
|
} |
252
|
|
|
|
|
|
|
else |
253
|
|
|
|
|
|
|
#endif |
254
|
9
|
100
|
|
|
|
|
if( sv_cmp(p->symbol_SV, symbol_SV)==0 ) |
255
|
3
|
|
|
|
|
|
goto FOUND; |
256
|
|
|
|
|
|
|
} |
257
|
|
|
|
|
|
|
case CXt_EVAL: |
258
|
|
|
|
|
|
|
case CXt_FORMAT: |
259
|
22
|
|
|
|
|
|
break; |
260
|
|
|
|
|
|
|
} |
261
|
|
|
|
|
|
|
} |
262
|
|
|
|
|
|
|
FOUND: |
263
|
4
|
100
|
|
|
|
|
if( cx
|
264
|
1
|
|
|
|
|
|
PUSHs(&PL_sv_undef); |
265
|
|
|
|
|
|
|
else |
266
|
3
|
|
|
|
|
|
switch(cx->blk_gimme & G_WANT){ |
267
|
|
|
|
|
|
|
case G_VOID: |
268
|
1
|
|
|
|
|
|
PUSHs(&PL_sv_undef); |
269
|
1
|
|
|
|
|
|
break; |
270
|
|
|
|
|
|
|
case G_SCALAR: |
271
|
1
|
|
|
|
|
|
PUSHs(&PL_sv_no); |
272
|
1
|
|
|
|
|
|
break; |
273
|
|
|
|
|
|
|
case G_ARRAY: |
274
|
1
|
|
|
|
|
|
PUSHs(&PL_sv_yes); |
275
|
1
|
|
|
|
|
|
break; |
276
|
|
|
|
|
|
|
default: |
277
|
0
|
|
|
|
|
|
croak("Unknown wantarray"); |
278
|
|
|
|
|
|
|
} |
279
|
|
|
|
|
|
|
|
280
|
|
|
|
|
|
|
BOOT: |
281
|
1
|
|
|
|
|
|
block_symbols_capacity = 8; |
282
|
1
|
|
|
|
|
|
block_symbols_n = 0; |
283
|
1
|
50
|
|
|
|
|
Newx(block_symbols, block_symbols_capacity, struct block_symbol_t); |
284
|
|
|
|
|
|
|
|
285
|
1
|
|
|
|
|
|
regex_match_sv = newRV_inc((SV*)get_cv("Return::Deep::regex_match", FALSE)); |
286
|
|
|
|
|
|
|
|
287
|
1
|
|
|
|
|
|
return_ppaddr = PL_ppaddr[OP_RETURN]; |
288
|
|
|
|
|
|
|
#if PERL_VERSION_GE(5,14,0) |
289
|
1
|
|
|
|
|
|
cv_set_call_checker(get_cv("Return::Deep::deep_ret", TRUE), deep_ret_check, &PL_sv_undef); |
290
|
1
|
|
|
|
|
|
cv_set_call_checker(get_cv("Return::Deep::sym_ret", TRUE), sym_ret_check, &PL_sv_undef); |
291
|
|
|
|
|
|
|
#else |
292
|
|
|
|
|
|
|
my_deep_ret_cv = get_cv("Return::Deep::deep_ret", TRUE); |
293
|
|
|
|
|
|
|
my_sym_ret_cv = get_cv("Return::Deep::sym_ret", TRUE); |
294
|
|
|
|
|
|
|
orig_entersub_check = PL_check[OP_ENTERSUB]; |
295
|
|
|
|
|
|
|
PL_check[OP_ENTERSUB] = my_entersub_check; |
296
|
|
|
|
|
|
|
#endif |