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1 | /* cop.h |
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2 | * |
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3 | * Copyright (c) 1991-1999, Larry Wall |
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4 | * |
5 | * You may distribute under the terms of either the GNU General Public |
6 | * License or the Artistic License, as specified in the README file. |
7 | * |
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8 | */ |
9 | |
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10 | struct cop { |
11 | BASEOP |
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12 | char * cop_label; /* label for this construct */ |
57843af0 |
13 | #ifdef USE_ITHREADS |
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14 | char * cop_stashpv; /* package line was compiled in */ |
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15 | char * cop_file; /* file name the following line # is from */ |
16 | #else |
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17 | HV * cop_stash; /* package line was compiled in */ |
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18 | GV * cop_filegv; /* file the following line # is from */ |
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19 | #endif |
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20 | U32 cop_seq; /* parse sequence number */ |
21 | I32 cop_arybase; /* array base this line was compiled with */ |
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22 | line_t cop_line; /* line # of this command */ |
599cee73 |
23 | SV * cop_warnings; /* lexical warnings bitmask */ |
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24 | }; |
25 | |
26 | #define Nullcop Null(COP*) |
27 | |
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28 | #ifdef USE_ITHREADS |
29 | # define CopFILE(c) ((c)->cop_file) |
30 | # define CopFILEGV(c) (CopFILE(c) \ |
31 | ? gv_fetchfile(CopFILE(c)) : Nullgv) |
32 | # define CopFILE_set(c,pv) ((c)->cop_file = savepv(pv)) /* XXX */ |
33 | # define CopFILESV(c) (CopFILE(c) \ |
34 | ? GvSV(gv_fetchfile(CopFILE(c))) : Nullsv) |
35 | # define CopFILEAV(c) (CopFILE(c) \ |
36 | ? GvAV(gv_fetchfile(CopFILE(c))) : Nullav) |
57843af0 |
37 | # define CopSTASHPV(c) ((c)->cop_stashpv) |
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38 | # define CopSTASHPV_set(c,pv) ((c)->cop_stashpv = savepv(pv)) /* XXX */ |
39 | # define CopSTASH(c) (CopSTASHPV(c) \ |
40 | ? gv_stashpv(CopSTASHPV(c),GV_ADD) : Nullhv) |
41 | # define CopSTASH_set(c,hv) CopSTASHPV_set(c, HvNAME(hv)) |
ed094faf |
42 | # define CopSTASH_eq(c,hv) (hv \ |
43 | && (CopSTASHPV(c) == HvNAME(hv) \ |
44 | || (CopSTASHPV(c) && HvNAME(hv) \ |
45 | && strEQ(CopSTASHPV(c), HvNAME(hv))))) |
57843af0 |
46 | #else |
47 | # define CopFILEGV(c) ((c)->cop_filegv) |
48 | # define CopFILEGV_set(c,gv) ((c)->cop_filegv = gv) |
49 | # define CopFILE_set(c,pv) ((c)->cop_filegv = gv_fetchfile(pv)) |
50 | # define CopFILESV(c) (CopFILEGV(c) ? GvSV(CopFILEGV(c)) : Nullsv) |
51 | # define CopFILEAV(c) (CopFILEGV(c) ? GvAV(CopFILEGV(c)) : Nullav) |
52 | # define CopFILE(c) (CopFILESV(c) ? SvPVX(CopFILESV(c)) : Nullch) |
53 | # define CopSTASH(c) ((c)->cop_stash) |
54 | # define CopSTASH_set(c,hv) ((c)->cop_stash = hv) |
55 | # define CopSTASHPV(c) (CopSTASH(c) ? HvNAME(CopSTASH(c)) : Nullch) |
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56 | # define CopSTASHPV_set(c,pv) CopSTASH_set(c, gv_stashpv(pv,GV_ADD)) |
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57 | # define CopSTASH_eq(c,hv) (CopSTASH(c) == hv) |
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58 | #endif /* USE_ITHREADS */ |
59 | |
ed094faf |
60 | #define CopSTASH_ne(c,hv) (!CopSTASH_eq(c,hv)) |
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61 | #define CopLINE(c) ((c)->cop_line) |
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62 | #define CopLINE_inc(c) (++CopLINE(c)) |
63 | #define CopLINE_dec(c) (--CopLINE(c)) |
64 | #define CopLINE_set(c,l) (CopLINE(c) = (l)) |
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65 | |
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66 | /* |
67 | * Here we have some enormously heavy (or at least ponderous) wizardry. |
68 | */ |
69 | |
70 | /* subroutine context */ |
71 | struct block_sub { |
72 | CV * cv; |
73 | GV * gv; |
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74 | GV * dfoutgv; |
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75 | #ifndef USE_THREADS |
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76 | AV * savearray; |
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77 | #endif /* USE_THREADS */ |
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78 | AV * argarray; |
79 | U16 olddepth; |
80 | U8 hasargs; |
cd06dffe |
81 | U8 lval; /* XXX merge lval and hasargs? */ |
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82 | }; |
83 | |
84 | #define PUSHSUB(cx) \ |
85 | cx->blk_sub.cv = cv; \ |
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86 | cx->blk_sub.olddepth = CvDEPTH(cv); \ |
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87 | cx->blk_sub.hasargs = hasargs; \ |
88 | cx->blk_sub.lval = PL_op->op_private & \ |
89 | (OPpLVAL_INTRO|OPpENTERSUB_INARGS); |
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90 | |
91 | #define PUSHFORMAT(cx) \ |
92 | cx->blk_sub.cv = cv; \ |
93 | cx->blk_sub.gv = gv; \ |
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94 | cx->blk_sub.hasargs = 0; \ |
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95 | cx->blk_sub.dfoutgv = PL_defoutgv; \ |
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96 | (void)SvREFCNT_inc(cx->blk_sub.dfoutgv) |
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97 | |
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98 | #ifdef USE_THREADS |
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99 | # define POP_SAVEARRAY() NOOP |
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100 | #else |
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101 | # define POP_SAVEARRAY() \ |
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102 | STMT_START { \ |
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103 | SvREFCNT_dec(GvAV(PL_defgv)); \ |
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104 | GvAV(PL_defgv) = cx->blk_sub.savearray; \ |
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105 | } STMT_END |
106 | #endif /* USE_THREADS */ |
107 | |
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108 | #ifdef USE_ITHREADS |
109 | /* junk in @_ spells trouble when cloning CVs, so don't leave any */ |
110 | # define CLEAR_ARGARRAY() av_clear(cx->blk_sub.argarray) |
111 | #else |
112 | # define CLEAR_ARGARRAY() NOOP |
113 | #endif /* USE_ITHREADS */ |
114 | |
115 | |
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116 | #define POPSUB(cx,sv) \ |
117 | STMT_START { \ |
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118 | if (cx->blk_sub.hasargs) { \ |
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119 | POP_SAVEARRAY(); \ |
d8b46c1b |
120 | /* abandon @_ if it got reified */ \ |
a8bba7fa |
121 | if (AvREAL(cx->blk_sub.argarray)) { \ |
122 | SSize_t fill = AvFILLp(cx->blk_sub.argarray); \ |
123 | SvREFCNT_dec(cx->blk_sub.argarray); \ |
124 | cx->blk_sub.argarray = newAV(); \ |
125 | av_extend(cx->blk_sub.argarray, fill); \ |
126 | AvFLAGS(cx->blk_sub.argarray) = AVf_REIFY; \ |
127 | PL_curpad[0] = (SV*)cx->blk_sub.argarray; \ |
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128 | } \ |
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129 | else { \ |
130 | CLEAR_ARGARRAY(); \ |
131 | } \ |
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132 | } \ |
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133 | sv = (SV*)cx->blk_sub.cv; \ |
134 | if (sv && (CvDEPTH((CV*)sv) = cx->blk_sub.olddepth)) \ |
135 | sv = Nullsv; \ |
136 | } STMT_END |
137 | |
138 | #define LEAVESUB(sv) \ |
139 | STMT_START { \ |
140 | if (sv) \ |
141 | SvREFCNT_dec(sv); \ |
142 | } STMT_END |
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143 | |
144 | #define POPFORMAT(cx) \ |
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145 | setdefout(cx->blk_sub.dfoutgv); \ |
146 | SvREFCNT_dec(cx->blk_sub.dfoutgv); |
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147 | |
148 | /* eval context */ |
149 | struct block_eval { |
150 | I32 old_in_eval; |
151 | I32 old_op_type; |
152 | char * old_name; |
153 | OP * old_eval_root; |
748a9306 |
154 | SV * cur_text; |
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155 | }; |
156 | |
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157 | #define PUSHEVAL(cx,n,fgv) \ |
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158 | cx->blk_eval.old_in_eval = PL_in_eval; \ |
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159 | cx->blk_eval.old_op_type = PL_op->op_type; \ |
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160 | cx->blk_eval.old_name = (n ? savepv(n) : Nullch); \ |
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161 | cx->blk_eval.old_eval_root = PL_eval_root; \ |
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162 | cx->blk_eval.cur_text = PL_linestr; |
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163 | |
164 | #define POPEVAL(cx) \ |
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165 | PL_in_eval = cx->blk_eval.old_in_eval; \ |
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166 | optype = cx->blk_eval.old_op_type; \ |
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167 | PL_eval_root = cx->blk_eval.old_eval_root; \ |
168 | Safefree(cx->blk_eval.old_name); |
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169 | |
170 | /* loop context */ |
171 | struct block_loop { |
172 | char * label; |
173 | I32 resetsp; |
174 | OP * redo_op; |
175 | OP * next_op; |
176 | OP * last_op; |
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177 | #ifdef USE_ITHREADS |
178 | void * iterdata; |
179 | #else |
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180 | SV ** itervar; |
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181 | #endif |
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182 | SV * itersave; |
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183 | SV * iterlval; |
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184 | AV * iterary; |
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185 | IV iterix; |
186 | IV itermax; |
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187 | }; |
188 | |
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189 | #ifdef USE_ITHREADS |
190 | # define CxITERVAR(c) \ |
191 | ((c)->blk_loop.iterdata \ |
192 | ? (CxPADLOOP(cx) \ |
193 | ? &PL_curpad[(PADOFFSET)(c)->blk_loop.iterdata] \ |
194 | : &GvSV((GV*)(c)->blk_loop.iterdata)) \ |
195 | : (SV**)NULL) |
196 | # define CX_ITERDATA_SET(cx,idata) \ |
197 | if (cx->blk_loop.iterdata = (idata)) \ |
198 | cx->blk_loop.itersave = SvREFCNT_inc(*CxITERVAR(cx)); |
199 | #else |
200 | # define CxITERVAR(c) ((c)->blk_loop.itervar) |
201 | # define CX_ITERDATA_SET(cx,ivar) \ |
202 | if (cx->blk_loop.itervar = (SV**)(ivar)) \ |
203 | cx->blk_loop.itersave = SvREFCNT_inc(*CxITERVAR(cx)); |
204 | #endif |
205 | |
206 | #define PUSHLOOP(cx, dat, s) \ |
38a230cb |
207 | cx->blk_loop.label = PL_curcop->cop_label; \ |
208 | cx->blk_loop.resetsp = s - PL_stack_base; \ |
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209 | cx->blk_loop.redo_op = cLOOP->op_redoop; \ |
210 | cx->blk_loop.next_op = cLOOP->op_nextop; \ |
211 | cx->blk_loop.last_op = cLOOP->op_lastop; \ |
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212 | cx->blk_loop.iterlval = Nullsv; \ |
213 | cx->blk_loop.iterary = Nullav; \ |
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214 | cx->blk_loop.iterix = -1; \ |
215 | CX_ITERDATA_SET(cx,dat); |
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216 | |
217 | #define POPLOOP(cx) \ |
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218 | SvREFCNT_dec(cx->blk_loop.iterlval); \ |
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219 | if (CxITERVAR(cx)) { \ |
220 | SV **s_v_p = CxITERVAR(cx); \ |
221 | sv_2mortal(*s_v_p); \ |
222 | *s_v_p = cx->blk_loop.itersave; \ |
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223 | } \ |
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224 | if (cx->blk_loop.iterary && cx->blk_loop.iterary != PL_curstack)\ |
225 | SvREFCNT_dec(cx->blk_loop.iterary); |
79072805 |
226 | |
227 | /* context common to subroutines, evals and loops */ |
228 | struct block { |
229 | I32 blku_oldsp; /* stack pointer to copy stuff down to */ |
230 | COP * blku_oldcop; /* old curcop pointer */ |
231 | I32 blku_oldretsp; /* return stack index */ |
232 | I32 blku_oldmarksp; /* mark stack index */ |
233 | I32 blku_oldscopesp; /* scope stack index */ |
234 | PMOP * blku_oldpm; /* values of pattern match vars */ |
235 | U8 blku_gimme; /* is this block running in list context? */ |
236 | |
237 | union { |
238 | struct block_sub blku_sub; |
239 | struct block_eval blku_eval; |
240 | struct block_loop blku_loop; |
241 | } blk_u; |
242 | }; |
243 | #define blk_oldsp cx_u.cx_blk.blku_oldsp |
244 | #define blk_oldcop cx_u.cx_blk.blku_oldcop |
245 | #define blk_oldretsp cx_u.cx_blk.blku_oldretsp |
246 | #define blk_oldmarksp cx_u.cx_blk.blku_oldmarksp |
247 | #define blk_oldscopesp cx_u.cx_blk.blku_oldscopesp |
248 | #define blk_oldpm cx_u.cx_blk.blku_oldpm |
249 | #define blk_gimme cx_u.cx_blk.blku_gimme |
250 | #define blk_sub cx_u.cx_blk.blk_u.blku_sub |
251 | #define blk_eval cx_u.cx_blk.blk_u.blku_eval |
252 | #define blk_loop cx_u.cx_blk.blk_u.blku_loop |
253 | |
254 | /* Enter a block. */ |
8990e307 |
255 | #define PUSHBLOCK(cx,t,sp) CXINC, cx = &cxstack[cxstack_ix], \ |
79072805 |
256 | cx->cx_type = t, \ |
3280af22 |
257 | cx->blk_oldsp = sp - PL_stack_base, \ |
258 | cx->blk_oldcop = PL_curcop, \ |
1aff0e91 |
259 | cx->blk_oldmarksp = PL_markstack_ptr - PL_markstack, \ |
3280af22 |
260 | cx->blk_oldscopesp = PL_scopestack_ix, \ |
1aff0e91 |
261 | cx->blk_oldretsp = PL_retstack_ix, \ |
3280af22 |
262 | cx->blk_oldpm = PL_curpm, \ |
79072805 |
263 | cx->blk_gimme = gimme; \ |
bf49b057 |
264 | DEBUG_l( PerlIO_printf(Perl_debug_log, "Entering block %ld, type %s\n", \ |
1aff0e91 |
265 | (long)cxstack_ix, PL_block_type[CxTYPE(cx)]); ) |
79072805 |
266 | |
267 | /* Exit a block (RETURN and LAST). */ |
a0d0e21e |
268 | #define POPBLOCK(cx,pm) cx = &cxstack[cxstack_ix--], \ |
1aff0e91 |
269 | newsp = PL_stack_base + cx->blk_oldsp, \ |
3280af22 |
270 | PL_curcop = cx->blk_oldcop, \ |
271 | PL_markstack_ptr = PL_markstack + cx->blk_oldmarksp, \ |
272 | PL_scopestack_ix = cx->blk_oldscopesp, \ |
273 | PL_retstack_ix = cx->blk_oldretsp, \ |
274 | pm = cx->blk_oldpm, \ |
275 | gimme = cx->blk_gimme; \ |
bf49b057 |
276 | DEBUG_l( PerlIO_printf(Perl_debug_log, "Leaving block %ld, type %s\n", \ |
22c35a8c |
277 | (long)cxstack_ix+1,PL_block_type[CxTYPE(cx)]); ) |
79072805 |
278 | |
279 | /* Continue a block elsewhere (NEXT and REDO). */ |
3280af22 |
280 | #define TOPBLOCK(cx) cx = &cxstack[cxstack_ix], \ |
1aff0e91 |
281 | PL_stack_sp = PL_stack_base + cx->blk_oldsp, \ |
3280af22 |
282 | PL_markstack_ptr = PL_markstack + cx->blk_oldmarksp, \ |
283 | PL_scopestack_ix = cx->blk_oldscopesp, \ |
2158dd9b |
284 | PL_retstack_ix = cx->blk_oldretsp, \ |
285 | PL_curpm = cx->blk_oldpm |
79072805 |
286 | |
287 | /* substitution context */ |
288 | struct subst { |
289 | I32 sbu_iters; |
290 | I32 sbu_maxiters; |
22e551b9 |
291 | I32 sbu_rflags; |
4633a7c4 |
292 | I32 sbu_oldsave; |
71be2cbc |
293 | bool sbu_once; |
294 | bool sbu_rxtainted; |
79072805 |
295 | char * sbu_orig; |
296 | SV * sbu_dstr; |
297 | SV * sbu_targ; |
298 | char * sbu_s; |
299 | char * sbu_m; |
300 | char * sbu_strend; |
c90c0ff4 |
301 | void * sbu_rxres; |
c07a80fd |
302 | REGEXP * sbu_rx; |
79072805 |
303 | }; |
304 | #define sb_iters cx_u.cx_subst.sbu_iters |
305 | #define sb_maxiters cx_u.cx_subst.sbu_maxiters |
22e551b9 |
306 | #define sb_rflags cx_u.cx_subst.sbu_rflags |
4633a7c4 |
307 | #define sb_oldsave cx_u.cx_subst.sbu_oldsave |
71be2cbc |
308 | #define sb_once cx_u.cx_subst.sbu_once |
309 | #define sb_rxtainted cx_u.cx_subst.sbu_rxtainted |
79072805 |
310 | #define sb_orig cx_u.cx_subst.sbu_orig |
311 | #define sb_dstr cx_u.cx_subst.sbu_dstr |
312 | #define sb_targ cx_u.cx_subst.sbu_targ |
313 | #define sb_s cx_u.cx_subst.sbu_s |
314 | #define sb_m cx_u.cx_subst.sbu_m |
315 | #define sb_strend cx_u.cx_subst.sbu_strend |
c90c0ff4 |
316 | #define sb_rxres cx_u.cx_subst.sbu_rxres |
c07a80fd |
317 | #define sb_rx cx_u.cx_subst.sbu_rx |
79072805 |
318 | |
319 | #define PUSHSUBST(cx) CXINC, cx = &cxstack[cxstack_ix], \ |
320 | cx->sb_iters = iters, \ |
321 | cx->sb_maxiters = maxiters, \ |
22e551b9 |
322 | cx->sb_rflags = r_flags, \ |
4633a7c4 |
323 | cx->sb_oldsave = oldsave, \ |
71be2cbc |
324 | cx->sb_once = once, \ |
325 | cx->sb_rxtainted = rxtainted, \ |
79072805 |
326 | cx->sb_orig = orig, \ |
327 | cx->sb_dstr = dstr, \ |
328 | cx->sb_targ = targ, \ |
329 | cx->sb_s = s, \ |
330 | cx->sb_m = m, \ |
331 | cx->sb_strend = strend, \ |
c90c0ff4 |
332 | cx->sb_rxres = Null(void*), \ |
c07a80fd |
333 | cx->sb_rx = rx, \ |
c90c0ff4 |
334 | cx->cx_type = CXt_SUBST; \ |
335 | rxres_save(&cx->sb_rxres, rx) |
79072805 |
336 | |
c90c0ff4 |
337 | #define POPSUBST(cx) cx = &cxstack[cxstack_ix--]; \ |
338 | rxres_free(&cx->sb_rxres) |
79072805 |
339 | |
340 | struct context { |
6b35e009 |
341 | U32 cx_type; /* what kind of context this is */ |
79072805 |
342 | union { |
343 | struct block cx_blk; |
344 | struct subst cx_subst; |
345 | } cx_u; |
346 | }; |
6b35e009 |
347 | |
348 | #define CXTYPEMASK 0xff |
79072805 |
349 | #define CXt_NULL 0 |
350 | #define CXt_SUB 1 |
351 | #define CXt_EVAL 2 |
352 | #define CXt_LOOP 3 |
353 | #define CXt_SUBST 4 |
354 | #define CXt_BLOCK 5 |
7766f137 |
355 | #define CXt_FORMAT 6 |
79072805 |
356 | |
6b35e009 |
357 | /* private flags for CXt_EVAL */ |
358 | #define CXp_REAL 0x00000100 /* truly eval'', not a lookalike */ |
359 | |
7766f137 |
360 | #ifdef USE_ITHREADS |
361 | /* private flags for CXt_LOOP */ |
362 | # define CXp_PADVAR 0x00000100 /* itervar lives on pad, iterdata |
363 | has pad offset; if not set, |
364 | iterdata holds GV* */ |
365 | # define CxPADLOOP(c) (((c)->cx_type & (CXt_LOOP|CXp_PADVAR)) \ |
366 | == (CXt_LOOP|CXp_PADVAR)) |
367 | #endif |
368 | |
6b35e009 |
369 | #define CxTYPE(c) ((c)->cx_type & CXTYPEMASK) |
7766f137 |
370 | #define CxREALEVAL(c) (((c)->cx_type & (CXt_EVAL|CXp_REAL)) \ |
371 | == (CXt_EVAL|CXp_REAL)) |
6b35e009 |
372 | |
79072805 |
373 | #define CXINC (cxstack_ix < cxstack_max ? ++cxstack_ix : (cxstack_ix = cxinc())) |
374 | |
375 | /* "gimme" values */ |
954c1994 |
376 | |
377 | /* |
378 | =for apidoc AmU||G_SCALAR |
379 | Used to indicate scalar context. See C<GIMME_V>, C<GIMME>, and |
380 | L<perlcall>. |
381 | |
382 | =for apidoc AmU||G_ARRAY |
383 | Used to indicate array context. See C<GIMME_V>, C<GIMME> and |
384 | L<perlcall>. |
385 | |
386 | =for apidoc AmU||G_VOID |
387 | Used to indicate void context. See C<GIMME_V> and L<perlcall>. |
388 | |
389 | =for apidoc AmU||G_DISCARD |
390 | Indicates that arguments returned from a callback should be discarded. See |
391 | L<perlcall>. |
392 | |
393 | =for apidoc AmU||G_EVAL |
394 | |
395 | Used to force a Perl C<eval> wrapper around a callback. See |
396 | L<perlcall>. |
397 | |
398 | =for apidoc AmU||G_NOARGS |
399 | |
400 | Indicates that no arguments are being sent to a callback. See |
401 | L<perlcall>. |
402 | |
403 | =cut |
404 | */ |
405 | |
a0d0e21e |
406 | #define G_SCALAR 0 |
407 | #define G_ARRAY 1 |
54310121 |
408 | #define G_VOID 128 /* skip this bit when adding flags below */ |
79072805 |
409 | |
864dbfa3 |
410 | /* extra flags for Perl_call_* routines */ |
a0d0e21e |
411 | #define G_DISCARD 2 /* Call FREETMPS. */ |
412 | #define G_EVAL 4 /* Assume eval {} around subroutine call. */ |
413 | #define G_NOARGS 8 /* Don't construct a @_ array. */ |
54310121 |
414 | #define G_KEEPERR 16 /* Append errors to $@, don't overwrite it */ |
491527d0 |
415 | #define G_NODEBUG 32 /* Disable debugging at toplevel. */ |
e336de0d |
416 | |
faef0170 |
417 | /* flag bits for PL_in_eval */ |
418 | #define EVAL_NULL 0 /* not in an eval */ |
419 | #define EVAL_INEVAL 1 /* some enclosing scope is an eval */ |
420 | #define EVAL_WARNONLY 2 /* used by yywarn() when calling yyerror() */ |
864dbfa3 |
421 | #define EVAL_KEEPERR 4 /* set by Perl_call_sv if G_KEEPERR */ |
faef0170 |
422 | |
e336de0d |
423 | /* Support for switching (stack and block) contexts. |
424 | * This ensures magic doesn't invalidate local stack and cx pointers. |
425 | */ |
426 | |
e788e7d3 |
427 | #define PERLSI_UNKNOWN -1 |
428 | #define PERLSI_UNDEF 0 |
429 | #define PERLSI_MAIN 1 |
430 | #define PERLSI_MAGIC 2 |
431 | #define PERLSI_SORT 3 |
432 | #define PERLSI_SIGNAL 4 |
433 | #define PERLSI_OVERLOAD 5 |
434 | #define PERLSI_DESTROY 6 |
435 | #define PERLSI_WARNHOOK 7 |
436 | #define PERLSI_DIEHOOK 8 |
437 | #define PERLSI_REQUIRE 9 |
e336de0d |
438 | |
439 | struct stackinfo { |
440 | AV * si_stack; /* stack for current runlevel */ |
441 | PERL_CONTEXT * si_cxstack; /* context stack for runlevel */ |
442 | I32 si_cxix; /* current context index */ |
443 | I32 si_cxmax; /* maximum allocated index */ |
444 | I32 si_type; /* type of runlevel */ |
445 | struct stackinfo * si_prev; |
446 | struct stackinfo * si_next; |
ce2f7c3b |
447 | I32 si_markoff; /* offset where markstack begins for us. |
e336de0d |
448 | * currently used only with DEBUGGING, |
449 | * but not #ifdef-ed for bincompat */ |
450 | }; |
451 | |
452 | typedef struct stackinfo PERL_SI; |
453 | |
3280af22 |
454 | #define cxstack (PL_curstackinfo->si_cxstack) |
455 | #define cxstack_ix (PL_curstackinfo->si_cxix) |
456 | #define cxstack_max (PL_curstackinfo->si_cxmax) |
e336de0d |
457 | |
458 | #ifdef DEBUGGING |
ce2f7c3b |
459 | # define SET_MARK_OFFSET \ |
460 | PL_curstackinfo->si_markoff = PL_markstack_ptr - PL_markstack |
e336de0d |
461 | #else |
ce2f7c3b |
462 | # define SET_MARK_OFFSET NOOP |
e336de0d |
463 | #endif |
464 | |
d3acc0f7 |
465 | #define PUSHSTACKi(type) \ |
e336de0d |
466 | STMT_START { \ |
3280af22 |
467 | PERL_SI *next = PL_curstackinfo->si_next; \ |
e336de0d |
468 | if (!next) { \ |
469 | next = new_stackinfo(32, 2048/sizeof(PERL_CONTEXT) - 1); \ |
3280af22 |
470 | next->si_prev = PL_curstackinfo; \ |
471 | PL_curstackinfo->si_next = next; \ |
e336de0d |
472 | } \ |
473 | next->si_type = type; \ |
474 | next->si_cxix = -1; \ |
475 | AvFILLp(next->si_stack) = 0; \ |
3280af22 |
476 | SWITCHSTACK(PL_curstack,next->si_stack); \ |
477 | PL_curstackinfo = next; \ |
ce2f7c3b |
478 | SET_MARK_OFFSET; \ |
e336de0d |
479 | } STMT_END |
480 | |
e788e7d3 |
481 | #define PUSHSTACK PUSHSTACKi(PERLSI_UNKNOWN) |
d3acc0f7 |
482 | |
3095d977 |
483 | /* POPSTACK works with PL_stack_sp, so it may need to be bracketed by |
484 | * PUTBACK/SPAGAIN to flush/refresh any local SP that may be active */ |
d3acc0f7 |
485 | #define POPSTACK \ |
e336de0d |
486 | STMT_START { \ |
de616352 |
487 | djSP; \ |
3280af22 |
488 | PERL_SI *prev = PL_curstackinfo->si_prev; \ |
e336de0d |
489 | if (!prev) { \ |
bf49b057 |
490 | PerlIO_printf(Perl_error_log, "panic: POPSTACK\n"); \ |
e336de0d |
491 | my_exit(1); \ |
492 | } \ |
3280af22 |
493 | SWITCHSTACK(PL_curstack,prev->si_stack); \ |
e336de0d |
494 | /* don't free prev here, free them all at the END{} */ \ |
3280af22 |
495 | PL_curstackinfo = prev; \ |
e336de0d |
496 | } STMT_END |
497 | |
498 | #define POPSTACK_TO(s) \ |
499 | STMT_START { \ |
3280af22 |
500 | while (PL_curstack != s) { \ |
bac4b2ad |
501 | dounwind(-1); \ |
d3acc0f7 |
502 | POPSTACK; \ |
bac4b2ad |
503 | } \ |
e336de0d |
504 | } STMT_END |