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1 | package B::Debug; |
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2 | |
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3 | our $VERSION = '1.04'; |
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4 | |
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5 | use strict; |
6 | use B qw(peekop class walkoptree walkoptree_exec |
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7 | main_start main_root cstring sv_undef @specialsv_name); |
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8 | |
9 | my %done_gv; |
10 | |
11 | sub B::OP::debug { |
12 | my ($op) = @_; |
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13 | printf <<'EOT', class($op), $$op, ${$op->next}, ${$op->sibling}, $op->ppaddr, $op->targ, $op->type; |
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14 | %s (0x%lx) |
15 | op_next 0x%x |
16 | op_sibling 0x%x |
17 | op_ppaddr %s |
18 | op_targ %d |
19 | op_type %d |
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20 | EOT |
21 | if ($] > 5.009) { |
22 | printf <<'EOT', $op->opt, $op->static; |
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23 | op_opt %d |
24 | op_static %d |
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25 | EOT |
26 | } else { |
27 | printf <<'EOT', $op->seq; |
28 | op_seq %d |
29 | EOT |
30 | } |
31 | printf <<'EOT', $op->flags, $op->private; |
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32 | op_flags %d |
33 | op_private %d |
34 | EOT |
35 | } |
36 | |
37 | sub B::UNOP::debug { |
38 | my ($op) = @_; |
39 | $op->B::OP::debug(); |
40 | printf "\top_first\t0x%x\n", ${$op->first}; |
41 | } |
42 | |
43 | sub B::BINOP::debug { |
44 | my ($op) = @_; |
45 | $op->B::UNOP::debug(); |
46 | printf "\top_last\t\t0x%x\n", ${$op->last}; |
47 | } |
48 | |
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49 | sub B::LOOP::debug { |
50 | my ($op) = @_; |
51 | $op->B::BINOP::debug(); |
52 | printf <<'EOT', ${$op->redoop}, ${$op->nextop}, ${$op->lastop}; |
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53 | op_redoop 0x%x |
54 | op_nextop 0x%x |
55 | op_lastop 0x%x |
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56 | EOT |
57 | } |
58 | |
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59 | sub B::LOGOP::debug { |
60 | my ($op) = @_; |
61 | $op->B::UNOP::debug(); |
62 | printf "\top_other\t0x%x\n", ${$op->other}; |
63 | } |
64 | |
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65 | sub B::LISTOP::debug { |
66 | my ($op) = @_; |
67 | $op->B::BINOP::debug(); |
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68 | printf "\top_children\t%d\n", $op->children; |
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69 | } |
70 | |
71 | sub B::PMOP::debug { |
72 | my ($op) = @_; |
73 | $op->B::LISTOP::debug(); |
74 | printf "\top_pmreplroot\t0x%x\n", ${$op->pmreplroot}; |
75 | printf "\top_pmreplstart\t0x%x\n", ${$op->pmreplstart}; |
76 | printf "\top_pmnext\t0x%x\n", ${$op->pmnext}; |
77 | printf "\top_pmregexp->precomp\t%s\n", cstring($op->precomp); |
78 | printf "\top_pmflags\t0x%x\n", $op->pmflags; |
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79 | $op->pmreplroot->debug; |
80 | } |
81 | |
82 | sub B::COP::debug { |
83 | my ($op) = @_; |
84 | $op->B::OP::debug(); |
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85 | my $cop_io = class($op->io) eq 'SPECIAL' ? '' : $op->io->as_string; |
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86 | printf <<'EOT', $op->label, $op->stashpv, $op->file, $op->cop_seq, $op->arybase, $op->line, ${$op->warnings}, cstring($cop_io); |
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87 | cop_label %s |
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88 | cop_stashpv %s |
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89 | cop_file %s |
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90 | cop_seq %d |
91 | cop_arybase %d |
92 | cop_line %d |
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93 | cop_warnings 0x%x |
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94 | cop_io %s |
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95 | EOT |
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96 | } |
97 | |
98 | sub B::SVOP::debug { |
99 | my ($op) = @_; |
100 | $op->B::OP::debug(); |
101 | printf "\top_sv\t\t0x%x\n", ${$op->sv}; |
102 | $op->sv->debug; |
103 | } |
104 | |
105 | sub B::PVOP::debug { |
106 | my ($op) = @_; |
107 | $op->B::OP::debug(); |
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108 | printf "\top_pv\t\t%s\n", cstring($op->pv); |
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109 | } |
110 | |
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111 | sub B::PADOP::debug { |
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112 | my ($op) = @_; |
113 | $op->B::OP::debug(); |
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114 | printf "\top_padix\t\t%ld\n", $op->padix; |
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115 | } |
116 | |
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117 | sub B::NULL::debug { |
118 | my ($sv) = @_; |
119 | if ($$sv == ${sv_undef()}) { |
120 | print "&sv_undef\n"; |
121 | } else { |
122 | printf "NULL (0x%x)\n", $$sv; |
123 | } |
124 | } |
125 | |
126 | sub B::SV::debug { |
127 | my ($sv) = @_; |
128 | if (!$$sv) { |
129 | print class($sv), " = NULL\n"; |
130 | return; |
131 | } |
132 | printf <<'EOT', class($sv), $$sv, $sv->REFCNT, $sv->FLAGS; |
133 | %s (0x%x) |
134 | REFCNT %d |
135 | FLAGS 0x%x |
136 | EOT |
137 | } |
138 | |
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139 | sub B::RV::debug { |
140 | my ($rv) = @_; |
141 | B::SV::debug($rv); |
142 | printf <<'EOT', ${$rv->RV}; |
143 | RV 0x%x |
144 | EOT |
145 | $rv->RV->debug; |
146 | } |
147 | |
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148 | sub B::PV::debug { |
149 | my ($sv) = @_; |
150 | $sv->B::SV::debug(); |
151 | my $pv = $sv->PV(); |
152 | printf <<'EOT', cstring($pv), length($pv); |
153 | xpv_pv %s |
154 | xpv_cur %d |
155 | EOT |
156 | } |
157 | |
158 | sub B::IV::debug { |
159 | my ($sv) = @_; |
160 | $sv->B::SV::debug(); |
161 | printf "\txiv_iv\t\t%d\n", $sv->IV; |
162 | } |
163 | |
164 | sub B::NV::debug { |
165 | my ($sv) = @_; |
166 | $sv->B::IV::debug(); |
167 | printf "\txnv_nv\t\t%s\n", $sv->NV; |
168 | } |
169 | |
170 | sub B::PVIV::debug { |
171 | my ($sv) = @_; |
172 | $sv->B::PV::debug(); |
173 | printf "\txiv_iv\t\t%d\n", $sv->IV; |
174 | } |
175 | |
176 | sub B::PVNV::debug { |
177 | my ($sv) = @_; |
178 | $sv->B::PVIV::debug(); |
179 | printf "\txnv_nv\t\t%s\n", $sv->NV; |
180 | } |
181 | |
182 | sub B::PVLV::debug { |
183 | my ($sv) = @_; |
184 | $sv->B::PVNV::debug(); |
185 | printf "\txlv_targoff\t%d\n", $sv->TARGOFF; |
186 | printf "\txlv_targlen\t%u\n", $sv->TARGLEN; |
187 | printf "\txlv_type\t%s\n", cstring(chr($sv->TYPE)); |
188 | } |
189 | |
190 | sub B::BM::debug { |
191 | my ($sv) = @_; |
192 | $sv->B::PVNV::debug(); |
193 | printf "\txbm_useful\t%d\n", $sv->USEFUL; |
194 | printf "\txbm_previous\t%u\n", $sv->PREVIOUS; |
195 | printf "\txbm_rare\t%s\n", cstring(chr($sv->RARE)); |
196 | } |
197 | |
198 | sub B::CV::debug { |
199 | my ($sv) = @_; |
200 | $sv->B::PVNV::debug(); |
201 | my ($stash) = $sv->STASH; |
202 | my ($start) = $sv->START; |
203 | my ($root) = $sv->ROOT; |
204 | my ($padlist) = $sv->PADLIST; |
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205 | my ($file) = $sv->FILE; |
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206 | my ($gv) = $sv->GV; |
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207 | printf <<'EOT', $$stash, $$start, $$root, $$gv, $file, $sv->DEPTH, $padlist, ${$sv->OUTSIDE}, $sv->OUTSIDE_SEQ; |
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208 | STASH 0x%x |
209 | START 0x%x |
210 | ROOT 0x%x |
211 | GV 0x%x |
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212 | FILE %s |
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213 | DEPTH %d |
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214 | PADLIST 0x%x |
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215 | OUTSIDE 0x%x |
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216 | OUTSIDE_SEQ %d |
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217 | EOT |
218 | $start->debug if $start; |
219 | $root->debug if $root; |
220 | $gv->debug if $gv; |
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221 | $padlist->debug if $padlist; |
222 | } |
223 | |
224 | sub B::AV::debug { |
225 | my ($av) = @_; |
226 | $av->B::SV::debug; |
227 | my(@array) = $av->ARRAY; |
228 | print "\tARRAY\t\t(", join(", ", map("0x" . $$_, @array)), ")\n"; |
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229 | printf <<'EOT', scalar(@array), $av->MAX, $av->OFF; |
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230 | FILL %d |
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231 | MAX %d |
232 | OFF %d |
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233 | EOT |
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234 | printf <<'EOT', $av->AvFLAGS if $] < 5.009; |
235 | AvFLAGS %d |
236 | EOT |
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237 | } |
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238 | |
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239 | sub B::GV::debug { |
240 | my ($gv) = @_; |
241 | if ($done_gv{$$gv}++) { |
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242 | printf "GV %s::%s\n", $gv->STASH->NAME, $gv->SAFENAME; |
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243 | return; |
244 | } |
245 | my ($sv) = $gv->SV; |
246 | my ($av) = $gv->AV; |
247 | my ($cv) = $gv->CV; |
248 | $gv->B::SV::debug; |
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249 | printf <<'EOT', $gv->SAFENAME, $gv->STASH->NAME, $gv->STASH, $$sv, $gv->GvREFCNT, $gv->FORM, $$av, ${$gv->HV}, ${$gv->EGV}, $$cv, $gv->CVGEN, $gv->LINE, $gv->FILE, $gv->GvFLAGS; |
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250 | NAME %s |
251 | STASH %s (0x%x) |
252 | SV 0x%x |
253 | GvREFCNT %d |
254 | FORM 0x%x |
255 | AV 0x%x |
256 | HV 0x%x |
257 | EGV 0x%x |
258 | CV 0x%x |
259 | CVGEN %d |
260 | LINE %d |
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261 | FILE %s |
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262 | GvFLAGS 0x%x |
263 | EOT |
264 | $sv->debug if $sv; |
265 | $av->debug if $av; |
266 | $cv->debug if $cv; |
267 | } |
268 | |
269 | sub B::SPECIAL::debug { |
270 | my $sv = shift; |
271 | print $specialsv_name[$$sv], "\n"; |
272 | } |
273 | |
274 | sub compile { |
275 | my $order = shift; |
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276 | B::clearsym(); |
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277 | if ($order && $order eq "exec") { |
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278 | return sub { walkoptree_exec(main_start, "debug") } |
279 | } else { |
280 | return sub { walkoptree(main_root, "debug") } |
281 | } |
282 | } |
283 | |
284 | 1; |
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285 | |
286 | __END__ |
287 | |
288 | =head1 NAME |
289 | |
290 | B::Debug - Walk Perl syntax tree, printing debug info about ops |
291 | |
292 | =head1 SYNOPSIS |
293 | |
294 | perl -MO=Debug[,OPTIONS] foo.pl |
295 | |
296 | =head1 DESCRIPTION |
297 | |
298 | See F<ext/B/README>. |
299 | |
300 | =head1 AUTHOR |
301 | |
302 | Malcolm Beattie, C<mbeattie@sable.ox.ac.uk> |
303 | |
304 | =cut |