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1 | package B::Debug; |
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2 | |
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3 | our $VERSION = '1.02'; |
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4 | |
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5 | use strict; |
6 | use B qw(peekop class walkoptree walkoptree_exec |
7 | main_start main_root cstring sv_undef); |
8 | use B::Asmdata qw(@specialsv_name); |
9 | |
10 | my %done_gv; |
11 | |
12 | sub B::OP::debug { |
13 | my ($op) = @_; |
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14 | printf <<'EOT', class($op), $$op, ${$op->next}, ${$op->sibling}, $op->ppaddr, $op->targ, $op->type, $op->opt, $op->static, $op->flags, $op->private; |
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15 | %s (0x%lx) |
16 | op_next 0x%x |
17 | op_sibling 0x%x |
18 | op_ppaddr %s |
19 | op_targ %d |
20 | op_type %d |
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21 | op_opt %d |
22 | op_static %d |
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23 | op_flags %d |
24 | op_private %d |
25 | EOT |
26 | } |
27 | |
28 | sub B::UNOP::debug { |
29 | my ($op) = @_; |
30 | $op->B::OP::debug(); |
31 | printf "\top_first\t0x%x\n", ${$op->first}; |
32 | } |
33 | |
34 | sub B::BINOP::debug { |
35 | my ($op) = @_; |
36 | $op->B::UNOP::debug(); |
37 | printf "\top_last\t\t0x%x\n", ${$op->last}; |
38 | } |
39 | |
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40 | sub B::LOOP::debug { |
41 | my ($op) = @_; |
42 | $op->B::BINOP::debug(); |
43 | printf <<'EOT', ${$op->redoop}, ${$op->nextop}, ${$op->lastop}; |
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44 | op_redoop 0x%x |
45 | op_nextop 0x%x |
46 | op_lastop 0x%x |
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47 | EOT |
48 | } |
49 | |
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50 | sub B::LOGOP::debug { |
51 | my ($op) = @_; |
52 | $op->B::UNOP::debug(); |
53 | printf "\top_other\t0x%x\n", ${$op->other}; |
54 | } |
55 | |
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56 | sub B::LISTOP::debug { |
57 | my ($op) = @_; |
58 | $op->B::BINOP::debug(); |
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59 | printf "\top_children\t%d\n", $op->children; |
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60 | } |
61 | |
62 | sub B::PMOP::debug { |
63 | my ($op) = @_; |
64 | $op->B::LISTOP::debug(); |
65 | printf "\top_pmreplroot\t0x%x\n", ${$op->pmreplroot}; |
66 | printf "\top_pmreplstart\t0x%x\n", ${$op->pmreplstart}; |
67 | printf "\top_pmnext\t0x%x\n", ${$op->pmnext}; |
68 | printf "\top_pmregexp->precomp\t%s\n", cstring($op->precomp); |
69 | printf "\top_pmflags\t0x%x\n", $op->pmflags; |
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70 | $op->pmreplroot->debug; |
71 | } |
72 | |
73 | sub B::COP::debug { |
74 | my ($op) = @_; |
75 | $op->B::OP::debug(); |
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76 | my $cop_io = class($op->io) eq 'SPECIAL' ? '' : $op->io->as_string; |
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77 | printf <<'EOT', $op->label, $op->stashpv, $op->file, $op->cop_seq, $op->arybase, $op->line, ${$op->warnings}, cstring($cop_io); |
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78 | cop_label %s |
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79 | cop_stashpv %s |
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80 | cop_file %s |
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81 | cop_seq %d |
82 | cop_arybase %d |
83 | cop_line %d |
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84 | cop_warnings 0x%x |
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85 | cop_io %s |
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86 | EOT |
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87 | } |
88 | |
89 | sub B::SVOP::debug { |
90 | my ($op) = @_; |
91 | $op->B::OP::debug(); |
92 | printf "\top_sv\t\t0x%x\n", ${$op->sv}; |
93 | $op->sv->debug; |
94 | } |
95 | |
96 | sub B::PVOP::debug { |
97 | my ($op) = @_; |
98 | $op->B::OP::debug(); |
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99 | printf "\top_pv\t\t%s\n", cstring($op->pv); |
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100 | } |
101 | |
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102 | sub B::PADOP::debug { |
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103 | my ($op) = @_; |
104 | $op->B::OP::debug(); |
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105 | printf "\top_padix\t\t%ld\n", $op->padix; |
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106 | } |
107 | |
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108 | sub B::NULL::debug { |
109 | my ($sv) = @_; |
110 | if ($$sv == ${sv_undef()}) { |
111 | print "&sv_undef\n"; |
112 | } else { |
113 | printf "NULL (0x%x)\n", $$sv; |
114 | } |
115 | } |
116 | |
117 | sub B::SV::debug { |
118 | my ($sv) = @_; |
119 | if (!$$sv) { |
120 | print class($sv), " = NULL\n"; |
121 | return; |
122 | } |
123 | printf <<'EOT', class($sv), $$sv, $sv->REFCNT, $sv->FLAGS; |
124 | %s (0x%x) |
125 | REFCNT %d |
126 | FLAGS 0x%x |
127 | EOT |
128 | } |
129 | |
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130 | sub B::RV::debug { |
131 | my ($rv) = @_; |
132 | B::SV::debug($rv); |
133 | printf <<'EOT', ${$rv->RV}; |
134 | RV 0x%x |
135 | EOT |
136 | $rv->RV->debug; |
137 | } |
138 | |
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139 | sub B::PV::debug { |
140 | my ($sv) = @_; |
141 | $sv->B::SV::debug(); |
142 | my $pv = $sv->PV(); |
143 | printf <<'EOT', cstring($pv), length($pv); |
144 | xpv_pv %s |
145 | xpv_cur %d |
146 | EOT |
147 | } |
148 | |
149 | sub B::IV::debug { |
150 | my ($sv) = @_; |
151 | $sv->B::SV::debug(); |
152 | printf "\txiv_iv\t\t%d\n", $sv->IV; |
153 | } |
154 | |
155 | sub B::NV::debug { |
156 | my ($sv) = @_; |
157 | $sv->B::IV::debug(); |
158 | printf "\txnv_nv\t\t%s\n", $sv->NV; |
159 | } |
160 | |
161 | sub B::PVIV::debug { |
162 | my ($sv) = @_; |
163 | $sv->B::PV::debug(); |
164 | printf "\txiv_iv\t\t%d\n", $sv->IV; |
165 | } |
166 | |
167 | sub B::PVNV::debug { |
168 | my ($sv) = @_; |
169 | $sv->B::PVIV::debug(); |
170 | printf "\txnv_nv\t\t%s\n", $sv->NV; |
171 | } |
172 | |
173 | sub B::PVLV::debug { |
174 | my ($sv) = @_; |
175 | $sv->B::PVNV::debug(); |
176 | printf "\txlv_targoff\t%d\n", $sv->TARGOFF; |
177 | printf "\txlv_targlen\t%u\n", $sv->TARGLEN; |
178 | printf "\txlv_type\t%s\n", cstring(chr($sv->TYPE)); |
179 | } |
180 | |
181 | sub B::BM::debug { |
182 | my ($sv) = @_; |
183 | $sv->B::PVNV::debug(); |
184 | printf "\txbm_useful\t%d\n", $sv->USEFUL; |
185 | printf "\txbm_previous\t%u\n", $sv->PREVIOUS; |
186 | printf "\txbm_rare\t%s\n", cstring(chr($sv->RARE)); |
187 | } |
188 | |
189 | sub B::CV::debug { |
190 | my ($sv) = @_; |
191 | $sv->B::PVNV::debug(); |
192 | my ($stash) = $sv->STASH; |
193 | my ($start) = $sv->START; |
194 | my ($root) = $sv->ROOT; |
195 | my ($padlist) = $sv->PADLIST; |
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196 | my ($file) = $sv->FILE; |
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197 | my ($gv) = $sv->GV; |
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198 | printf <<'EOT', $$stash, $$start, $$root, $$gv, $file, $sv->DEPTH, $padlist, ${$sv->OUTSIDE}, $sv->OUTSIDE_SEQ; |
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199 | STASH 0x%x |
200 | START 0x%x |
201 | ROOT 0x%x |
202 | GV 0x%x |
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203 | FILE %s |
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204 | DEPTH %d |
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205 | PADLIST 0x%x |
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206 | OUTSIDE 0x%x |
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207 | OUTSIDE_SEQ %d |
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208 | EOT |
209 | $start->debug if $start; |
210 | $root->debug if $root; |
211 | $gv->debug if $gv; |
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212 | $padlist->debug if $padlist; |
213 | } |
214 | |
215 | sub B::AV::debug { |
216 | my ($av) = @_; |
217 | $av->B::SV::debug; |
218 | my(@array) = $av->ARRAY; |
219 | print "\tARRAY\t\t(", join(", ", map("0x" . $$_, @array)), ")\n"; |
220 | printf <<'EOT', scalar(@array), $av->MAX, $av->OFF, $av->AvFLAGS; |
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221 | FILL %d |
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222 | MAX %d |
223 | OFF %d |
224 | AvFLAGS %d |
225 | EOT |
226 | } |
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227 | |
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228 | sub B::GV::debug { |
229 | my ($gv) = @_; |
230 | if ($done_gv{$$gv}++) { |
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231 | printf "GV %s::%s\n", $gv->STASH->NAME, $gv->SAFENAME; |
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232 | return; |
233 | } |
234 | my ($sv) = $gv->SV; |
235 | my ($av) = $gv->AV; |
236 | my ($cv) = $gv->CV; |
237 | $gv->B::SV::debug; |
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238 | printf <<'EOT', $gv->SAFENAME, $gv->STASH->NAME, $gv->STASH, $$sv, $gv->GvREFCNT, $gv->FORM, $$av, ${$gv->HV}, ${$gv->EGV}, $$cv, $gv->CVGEN, $gv->LINE, $gv->FILE, $gv->GvFLAGS; |
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239 | NAME %s |
240 | STASH %s (0x%x) |
241 | SV 0x%x |
242 | GvREFCNT %d |
243 | FORM 0x%x |
244 | AV 0x%x |
245 | HV 0x%x |
246 | EGV 0x%x |
247 | CV 0x%x |
248 | CVGEN %d |
249 | LINE %d |
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250 | FILE %s |
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251 | GvFLAGS 0x%x |
252 | EOT |
253 | $sv->debug if $sv; |
254 | $av->debug if $av; |
255 | $cv->debug if $cv; |
256 | } |
257 | |
258 | sub B::SPECIAL::debug { |
259 | my $sv = shift; |
260 | print $specialsv_name[$$sv], "\n"; |
261 | } |
262 | |
263 | sub compile { |
264 | my $order = shift; |
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265 | B::clearsym(); |
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266 | if ($order && $order eq "exec") { |
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267 | return sub { walkoptree_exec(main_start, "debug") } |
268 | } else { |
269 | return sub { walkoptree(main_root, "debug") } |
270 | } |
271 | } |
272 | |
273 | 1; |
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274 | |
275 | __END__ |
276 | |
277 | =head1 NAME |
278 | |
279 | B::Debug - Walk Perl syntax tree, printing debug info about ops |
280 | |
281 | =head1 SYNOPSIS |
282 | |
283 | perl -MO=Debug[,OPTIONS] foo.pl |
284 | |
285 | =head1 DESCRIPTION |
286 | |
287 | See F<ext/B/README>. |
288 | |
289 | =head1 AUTHOR |
290 | |
291 | Malcolm Beattie, C<mbeattie@sable.ox.ac.uk> |
292 | |
293 | =cut |