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1 | package B::Debug; |
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2 | |
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3 | our $VERSION = '1.01'; |
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4 | |
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5 | use strict; |
6 | use B qw(peekop class walkoptree walkoptree_exec |
7 | main_start main_root cstring sv_undef); |
8 | use B::Asmdata qw(@specialsv_name); |
9 | |
10 | my %done_gv; |
11 | |
12 | sub B::OP::debug { |
13 | my ($op) = @_; |
14 | printf <<'EOT', class($op), $$op, ${$op->next}, ${$op->sibling}, $op->ppaddr, $op->targ, $op->type, $op->seq, $op->flags, $op->private; |
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 |
21 | op_seq %d |
22 | op_flags %d |
23 | op_private %d |
24 | EOT |
25 | } |
26 | |
27 | sub B::UNOP::debug { |
28 | my ($op) = @_; |
29 | $op->B::OP::debug(); |
30 | printf "\top_first\t0x%x\n", ${$op->first}; |
31 | } |
32 | |
33 | sub B::BINOP::debug { |
34 | my ($op) = @_; |
35 | $op->B::UNOP::debug(); |
36 | printf "\top_last\t\t0x%x\n", ${$op->last}; |
37 | } |
38 | |
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39 | sub B::LOOP::debug { |
40 | my ($op) = @_; |
41 | $op->B::BINOP::debug(); |
42 | printf <<'EOT', ${$op->redoop}, ${$op->nextop}, ${$op->lastop}; |
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43 | op_redoop 0x%x |
44 | op_nextop 0x%x |
45 | op_lastop 0x%x |
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46 | EOT |
47 | } |
48 | |
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49 | sub B::LOGOP::debug { |
50 | my ($op) = @_; |
51 | $op->B::UNOP::debug(); |
52 | printf "\top_other\t0x%x\n", ${$op->other}; |
53 | } |
54 | |
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55 | sub B::LISTOP::debug { |
56 | my ($op) = @_; |
57 | $op->B::BINOP::debug(); |
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58 | printf "\top_children\t%d\n", $op->children; |
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59 | } |
60 | |
61 | sub B::PMOP::debug { |
62 | my ($op) = @_; |
63 | $op->B::LISTOP::debug(); |
64 | printf "\top_pmreplroot\t0x%x\n", ${$op->pmreplroot}; |
65 | printf "\top_pmreplstart\t0x%x\n", ${$op->pmreplstart}; |
66 | printf "\top_pmnext\t0x%x\n", ${$op->pmnext}; |
67 | printf "\top_pmregexp->precomp\t%s\n", cstring($op->precomp); |
68 | printf "\top_pmflags\t0x%x\n", $op->pmflags; |
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69 | $op->pmreplroot->debug; |
70 | } |
71 | |
72 | sub B::COP::debug { |
73 | my ($op) = @_; |
74 | $op->B::OP::debug(); |
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75 | my $cop_io = class($op->io) eq 'SPECIAL' ? '' : $op->io->as_string; |
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76 | printf <<'EOT', $op->label, $op->stashpv, $op->file, $op->cop_seq, $op->arybase, $op->line, ${$op->warnings}, cstring($cop_io); |
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77 | cop_label %s |
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78 | cop_stashpv %s |
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79 | cop_file %s |
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80 | cop_seq %d |
81 | cop_arybase %d |
82 | cop_line %d |
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83 | cop_warnings 0x%x |
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84 | cop_io %s |
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85 | EOT |
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86 | } |
87 | |
88 | sub B::SVOP::debug { |
89 | my ($op) = @_; |
90 | $op->B::OP::debug(); |
91 | printf "\top_sv\t\t0x%x\n", ${$op->sv}; |
92 | $op->sv->debug; |
93 | } |
94 | |
95 | sub B::PVOP::debug { |
96 | my ($op) = @_; |
97 | $op->B::OP::debug(); |
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98 | printf "\top_pv\t\t%s\n", cstring($op->pv); |
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99 | } |
100 | |
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101 | sub B::PADOP::debug { |
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102 | my ($op) = @_; |
103 | $op->B::OP::debug(); |
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104 | printf "\top_padix\t\t%ld\n", $op->padix; |
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105 | } |
106 | |
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107 | sub B::NULL::debug { |
108 | my ($sv) = @_; |
109 | if ($$sv == ${sv_undef()}) { |
110 | print "&sv_undef\n"; |
111 | } else { |
112 | printf "NULL (0x%x)\n", $$sv; |
113 | } |
114 | } |
115 | |
116 | sub B::SV::debug { |
117 | my ($sv) = @_; |
118 | if (!$$sv) { |
119 | print class($sv), " = NULL\n"; |
120 | return; |
121 | } |
122 | printf <<'EOT', class($sv), $$sv, $sv->REFCNT, $sv->FLAGS; |
123 | %s (0x%x) |
124 | REFCNT %d |
125 | FLAGS 0x%x |
126 | EOT |
127 | } |
128 | |
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129 | sub B::RV::debug { |
130 | my ($rv) = @_; |
131 | B::SV::debug($rv); |
132 | printf <<'EOT', ${$rv->RV}; |
133 | RV 0x%x |
134 | EOT |
135 | $rv->RV->debug; |
136 | } |
137 | |
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138 | sub B::PV::debug { |
139 | my ($sv) = @_; |
140 | $sv->B::SV::debug(); |
141 | my $pv = $sv->PV(); |
142 | printf <<'EOT', cstring($pv), length($pv); |
143 | xpv_pv %s |
144 | xpv_cur %d |
145 | EOT |
146 | } |
147 | |
148 | sub B::IV::debug { |
149 | my ($sv) = @_; |
150 | $sv->B::SV::debug(); |
151 | printf "\txiv_iv\t\t%d\n", $sv->IV; |
152 | } |
153 | |
154 | sub B::NV::debug { |
155 | my ($sv) = @_; |
156 | $sv->B::IV::debug(); |
157 | printf "\txnv_nv\t\t%s\n", $sv->NV; |
158 | } |
159 | |
160 | sub B::PVIV::debug { |
161 | my ($sv) = @_; |
162 | $sv->B::PV::debug(); |
163 | printf "\txiv_iv\t\t%d\n", $sv->IV; |
164 | } |
165 | |
166 | sub B::PVNV::debug { |
167 | my ($sv) = @_; |
168 | $sv->B::PVIV::debug(); |
169 | printf "\txnv_nv\t\t%s\n", $sv->NV; |
170 | } |
171 | |
172 | sub B::PVLV::debug { |
173 | my ($sv) = @_; |
174 | $sv->B::PVNV::debug(); |
175 | printf "\txlv_targoff\t%d\n", $sv->TARGOFF; |
176 | printf "\txlv_targlen\t%u\n", $sv->TARGLEN; |
177 | printf "\txlv_type\t%s\n", cstring(chr($sv->TYPE)); |
178 | } |
179 | |
180 | sub B::BM::debug { |
181 | my ($sv) = @_; |
182 | $sv->B::PVNV::debug(); |
183 | printf "\txbm_useful\t%d\n", $sv->USEFUL; |
184 | printf "\txbm_previous\t%u\n", $sv->PREVIOUS; |
185 | printf "\txbm_rare\t%s\n", cstring(chr($sv->RARE)); |
186 | } |
187 | |
188 | sub B::CV::debug { |
189 | my ($sv) = @_; |
190 | $sv->B::PVNV::debug(); |
191 | my ($stash) = $sv->STASH; |
192 | my ($start) = $sv->START; |
193 | my ($root) = $sv->ROOT; |
194 | my ($padlist) = $sv->PADLIST; |
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195 | my ($file) = $sv->FILE; |
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196 | my ($gv) = $sv->GV; |
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197 | printf <<'EOT', $$stash, $$start, $$root, $$gv, $file, $sv->DEPTH, $padlist, ${$sv->OUTSIDE}, $sv->OUTSIDE_SEQ; |
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198 | STASH 0x%x |
199 | START 0x%x |
200 | ROOT 0x%x |
201 | GV 0x%x |
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202 | FILE %s |
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203 | DEPTH %d |
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204 | PADLIST 0x%x |
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205 | OUTSIDE 0x%x |
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206 | OUTSIDE_SEQ %d |
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207 | EOT |
208 | $start->debug if $start; |
209 | $root->debug if $root; |
210 | $gv->debug if $gv; |
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211 | $padlist->debug if $padlist; |
212 | } |
213 | |
214 | sub B::AV::debug { |
215 | my ($av) = @_; |
216 | $av->B::SV::debug; |
217 | my(@array) = $av->ARRAY; |
218 | print "\tARRAY\t\t(", join(", ", map("0x" . $$_, @array)), ")\n"; |
219 | printf <<'EOT', scalar(@array), $av->MAX, $av->OFF, $av->AvFLAGS; |
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220 | FILL %d |
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221 | MAX %d |
222 | OFF %d |
223 | AvFLAGS %d |
224 | EOT |
225 | } |
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226 | |
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227 | sub B::GV::debug { |
228 | my ($gv) = @_; |
229 | if ($done_gv{$$gv}++) { |
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230 | printf "GV %s::%s\n", $gv->STASH->NAME, $gv->SAFENAME; |
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231 | return; |
232 | } |
233 | my ($sv) = $gv->SV; |
234 | my ($av) = $gv->AV; |
235 | my ($cv) = $gv->CV; |
236 | $gv->B::SV::debug; |
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237 | printf <<'EOT', $gv->SAFENAME, $gv->STASH->NAME, $gv->STASH, $$sv, $gv->GvREFCNT, $gv->FORM, $$av, ${$gv->HV}, ${$gv->EGV}, $$cv, $gv->CVGEN, $gv->LINE, $gv->FILE, $gv->GvFLAGS; |
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238 | NAME %s |
239 | STASH %s (0x%x) |
240 | SV 0x%x |
241 | GvREFCNT %d |
242 | FORM 0x%x |
243 | AV 0x%x |
244 | HV 0x%x |
245 | EGV 0x%x |
246 | CV 0x%x |
247 | CVGEN %d |
248 | LINE %d |
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249 | FILE %s |
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250 | GvFLAGS 0x%x |
251 | EOT |
252 | $sv->debug if $sv; |
253 | $av->debug if $av; |
254 | $cv->debug if $cv; |
255 | } |
256 | |
257 | sub B::SPECIAL::debug { |
258 | my $sv = shift; |
259 | print $specialsv_name[$$sv], "\n"; |
260 | } |
261 | |
262 | sub compile { |
263 | my $order = shift; |
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264 | B::clearsym(); |
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265 | if ($order && $order eq "exec") { |
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266 | return sub { walkoptree_exec(main_start, "debug") } |
267 | } else { |
268 | return sub { walkoptree(main_root, "debug") } |
269 | } |
270 | } |
271 | |
272 | 1; |
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273 | |
274 | __END__ |
275 | |
276 | =head1 NAME |
277 | |
278 | B::Debug - Walk Perl syntax tree, printing debug info about ops |
279 | |
280 | =head1 SYNOPSIS |
281 | |
282 | perl -MO=Debug[,OPTIONS] foo.pl |
283 | |
284 | =head1 DESCRIPTION |
285 | |
286 | See F<ext/B/README>. |
287 | |
288 | =head1 AUTHOR |
289 | |
290 | Malcolm Beattie, C<mbeattie@sable.ox.ac.uk> |
291 | |
292 | =cut |