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1 | package B::Debug; |
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2 | |
3 | our $VERSION = '1.00'; |
4 | |
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5 | use strict; |
6 | use B qw(peekop class walkoptree walkoptree_exec |
7 | main_start main_root cstring sv_undef); |
8 | use B::Asmdata qw(@specialsv_name); |
9 | |
10 | my %done_gv; |
11 | |
12 | sub B::OP::debug { |
13 | my ($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}; |
43 | op_redoop 0x%x |
44 | op_nextop 0x%x |
45 | op_lastop 0x%x |
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 | printf <<'EOT', $op->label, $op->stashpv, $op->file, $op->seq, $op->arybase, $op->line, ${$op->warnings}; |
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76 | cop_label %s |
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77 | cop_stashpv %s |
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78 | cop_file %s |
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79 | cop_seq %d |
80 | cop_arybase %d |
81 | cop_line %d |
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82 | cop_warnings 0x%x |
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83 | EOT |
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84 | } |
85 | |
86 | sub B::SVOP::debug { |
87 | my ($op) = @_; |
88 | $op->B::OP::debug(); |
89 | printf "\top_sv\t\t0x%x\n", ${$op->sv}; |
90 | $op->sv->debug; |
91 | } |
92 | |
93 | sub B::PVOP::debug { |
94 | my ($op) = @_; |
95 | $op->B::OP::debug(); |
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96 | printf "\top_pv\t\t%s\n", cstring($op->pv); |
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97 | } |
98 | |
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99 | sub B::PADOP::debug { |
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100 | my ($op) = @_; |
101 | $op->B::OP::debug(); |
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102 | printf "\top_padix\t\t%ld\n", $op->padix; |
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103 | } |
104 | |
105 | sub B::CVOP::debug { |
106 | my ($op) = @_; |
107 | $op->B::OP::debug(); |
108 | printf "\top_cv\t\t0x%x\n", ${$op->cv}; |
109 | } |
110 | |
111 | sub B::NULL::debug { |
112 | my ($sv) = @_; |
113 | if ($$sv == ${sv_undef()}) { |
114 | print "&sv_undef\n"; |
115 | } else { |
116 | printf "NULL (0x%x)\n", $$sv; |
117 | } |
118 | } |
119 | |
120 | sub B::SV::debug { |
121 | my ($sv) = @_; |
122 | if (!$$sv) { |
123 | print class($sv), " = NULL\n"; |
124 | return; |
125 | } |
126 | printf <<'EOT', class($sv), $$sv, $sv->REFCNT, $sv->FLAGS; |
127 | %s (0x%x) |
128 | REFCNT %d |
129 | FLAGS 0x%x |
130 | EOT |
131 | } |
132 | |
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133 | sub B::RV::debug { |
134 | my ($rv) = @_; |
135 | B::SV::debug($rv); |
136 | printf <<'EOT', ${$rv->RV}; |
137 | RV 0x%x |
138 | EOT |
139 | $rv->RV->debug; |
140 | } |
141 | |
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142 | sub B::PV::debug { |
143 | my ($sv) = @_; |
144 | $sv->B::SV::debug(); |
145 | my $pv = $sv->PV(); |
146 | printf <<'EOT', cstring($pv), length($pv); |
147 | xpv_pv %s |
148 | xpv_cur %d |
149 | EOT |
150 | } |
151 | |
152 | sub B::IV::debug { |
153 | my ($sv) = @_; |
154 | $sv->B::SV::debug(); |
155 | printf "\txiv_iv\t\t%d\n", $sv->IV; |
156 | } |
157 | |
158 | sub B::NV::debug { |
159 | my ($sv) = @_; |
160 | $sv->B::IV::debug(); |
161 | printf "\txnv_nv\t\t%s\n", $sv->NV; |
162 | } |
163 | |
164 | sub B::PVIV::debug { |
165 | my ($sv) = @_; |
166 | $sv->B::PV::debug(); |
167 | printf "\txiv_iv\t\t%d\n", $sv->IV; |
168 | } |
169 | |
170 | sub B::PVNV::debug { |
171 | my ($sv) = @_; |
172 | $sv->B::PVIV::debug(); |
173 | printf "\txnv_nv\t\t%s\n", $sv->NV; |
174 | } |
175 | |
176 | sub B::PVLV::debug { |
177 | my ($sv) = @_; |
178 | $sv->B::PVNV::debug(); |
179 | printf "\txlv_targoff\t%d\n", $sv->TARGOFF; |
180 | printf "\txlv_targlen\t%u\n", $sv->TARGLEN; |
181 | printf "\txlv_type\t%s\n", cstring(chr($sv->TYPE)); |
182 | } |
183 | |
184 | sub B::BM::debug { |
185 | my ($sv) = @_; |
186 | $sv->B::PVNV::debug(); |
187 | printf "\txbm_useful\t%d\n", $sv->USEFUL; |
188 | printf "\txbm_previous\t%u\n", $sv->PREVIOUS; |
189 | printf "\txbm_rare\t%s\n", cstring(chr($sv->RARE)); |
190 | } |
191 | |
192 | sub B::CV::debug { |
193 | my ($sv) = @_; |
194 | $sv->B::PVNV::debug(); |
195 | my ($stash) = $sv->STASH; |
196 | my ($start) = $sv->START; |
197 | my ($root) = $sv->ROOT; |
198 | my ($padlist) = $sv->PADLIST; |
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199 | my ($file) = $sv->FILE; |
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200 | my ($gv) = $sv->GV; |
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201 | printf <<'EOT', $$stash, $$start, $$root, $$gv, $file, $sv->DEPTH, $padlist, ${$sv->OUTSIDE}; |
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202 | STASH 0x%x |
203 | START 0x%x |
204 | ROOT 0x%x |
205 | GV 0x%x |
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206 | FILE %s |
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207 | DEPTH %d |
208 | PADLIST 0x%x |
209 | OUTSIDE 0x%x |
210 | EOT |
211 | $start->debug if $start; |
212 | $root->debug if $root; |
213 | $gv->debug if $gv; |
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214 | $padlist->debug if $padlist; |
215 | } |
216 | |
217 | sub B::AV::debug { |
218 | my ($av) = @_; |
219 | $av->B::SV::debug; |
220 | my(@array) = $av->ARRAY; |
221 | print "\tARRAY\t\t(", join(", ", map("0x" . $$_, @array)), ")\n"; |
222 | printf <<'EOT', scalar(@array), $av->MAX, $av->OFF, $av->AvFLAGS; |
223 | FILL %d |
224 | MAX %d |
225 | OFF %d |
226 | AvFLAGS %d |
227 | EOT |
228 | } |
229 | |
230 | sub B::GV::debug { |
231 | my ($gv) = @_; |
232 | if ($done_gv{$$gv}++) { |
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233 | printf "GV %s::%s\n", $gv->STASH->NAME, $gv->SAFENAME; |
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234 | return; |
235 | } |
236 | my ($sv) = $gv->SV; |
237 | my ($av) = $gv->AV; |
238 | my ($cv) = $gv->CV; |
239 | $gv->B::SV::debug; |
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240 | printf <<'EOT', $gv->SAFENAME, $gv->STASH->NAME, $gv->STASH, $$sv, $gv->GvREFCNT, $gv->FORM, $$av, ${$gv->HV}, ${$gv->EGV}, $$cv, $gv->CVGEN, $gv->LINE, $gv->FILE, $gv->GvFLAGS; |
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241 | NAME %s |
242 | STASH %s (0x%x) |
243 | SV 0x%x |
244 | GvREFCNT %d |
245 | FORM 0x%x |
246 | AV 0x%x |
247 | HV 0x%x |
248 | EGV 0x%x |
249 | CV 0x%x |
250 | CVGEN %d |
251 | LINE %d |
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252 | FILE %s |
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253 | GvFLAGS 0x%x |
254 | EOT |
255 | $sv->debug if $sv; |
256 | $av->debug if $av; |
257 | $cv->debug if $cv; |
258 | } |
259 | |
260 | sub B::SPECIAL::debug { |
261 | my $sv = shift; |
262 | print $specialsv_name[$$sv], "\n"; |
263 | } |
264 | |
265 | sub compile { |
266 | my $order = shift; |
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267 | B::clearsym(); |
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268 | if ($order && $order eq "exec") { |
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269 | return sub { walkoptree_exec(main_start, "debug") } |
270 | } else { |
271 | return sub { walkoptree(main_root, "debug") } |
272 | } |
273 | } |
274 | |
275 | 1; |
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276 | |
277 | __END__ |
278 | |
279 | =head1 NAME |
280 | |
281 | B::Debug - Walk Perl syntax tree, printing debug info about ops |
282 | |
283 | =head1 SYNOPSIS |
284 | |
285 | perl -MO=Debug[,OPTIONS] foo.pl |
286 | |
287 | =head1 DESCRIPTION |
288 | |
289 | See F<ext/B/README>. |
290 | |
291 | =head1 AUTHOR |
292 | |
293 | Malcolm Beattie, C<mbeattie@sable.ox.ac.uk> |
294 | |
295 | =cut |