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86530b38 AT |
1 | package B::Debug; |
2 | ||
3 | our $VERSION = '1.00'; | |
4 | ||
5 | use strict; | |
6 | use B qw(peekop class walkoptree walkoptree_exec | |
7 | main_start main_root cstring sv_undef); | |
8 | use B::Asmdata qw(@specialsv_name); | |
9 | ||
10 | my %done_gv; | |
11 | ||
12 | sub B::OP::debug { | |
13 | my ($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 | ||
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 | ||
49 | sub B::LOGOP::debug { | |
50 | my ($op) = @_; | |
51 | $op->B::UNOP::debug(); | |
52 | printf "\top_other\t0x%x\n", ${$op->other}; | |
53 | } | |
54 | ||
55 | sub B::LISTOP::debug { | |
56 | my ($op) = @_; | |
57 | $op->B::BINOP::debug(); | |
58 | printf "\top_children\t%d\n", $op->children; | |
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; | |
69 | $op->pmreplroot->debug; | |
70 | } | |
71 | ||
72 | sub B::COP::debug { | |
73 | my ($op) = @_; | |
74 | $op->B::OP::debug(); | |
75 | printf <<'EOT', $op->label, $op->stashpv, $op->file, $op->seq, $op->arybase, $op->line, ${$op->warnings}; | |
76 | cop_label %s | |
77 | cop_stashpv %s | |
78 | cop_file %s | |
79 | cop_seq %d | |
80 | cop_arybase %d | |
81 | cop_line %d | |
82 | cop_warnings 0x%x | |
83 | EOT | |
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(); | |
96 | printf "\top_pv\t\t%s\n", cstring($op->pv); | |
97 | } | |
98 | ||
99 | sub B::PADOP::debug { | |
100 | my ($op) = @_; | |
101 | $op->B::OP::debug(); | |
102 | printf "\top_padix\t\t%ld\n", $op->padix; | |
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 | ||
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 | ||
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; | |
199 | my ($file) = $sv->FILE; | |
200 | my ($gv) = $sv->GV; | |
201 | printf <<'EOT', $$stash, $$start, $$root, $$gv, $file, $sv->DEPTH, $padlist, ${$sv->OUTSIDE}; | |
202 | STASH 0x%x | |
203 | START 0x%x | |
204 | ROOT 0x%x | |
205 | GV 0x%x | |
206 | FILE %s | |
207 | DEPTH %d | |
208 | PADLIST 0x%x | |
209 | OUTSIDE 0x%x | |
210 | EOT | |
211 | $start->debug if $start; | |
212 | $root->debug if $root; | |
213 | $gv->debug if $gv; | |
214 | $padlist->debug if $padlist; | |
215 | } | |
216 | ||
217 | sub B::AV::debug { | |
218 | my ($av) = @_; | |
219 | $av->B::SV::debug; | |
220 | my(@array) = $av->ARRAY; | |
221 | print "\tARRAY\t\t(", join(", ", map("0x" . $$_, @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{$$gv}++) { | |
233 | printf "GV %s::%s\n", $gv->STASH->NAME, $gv->SAFENAME; | |
234 | return; | |
235 | } | |
236 | my ($sv) = $gv->SV; | |
237 | my ($av) = $gv->AV; | |
238 | my ($cv) = $gv->CV; | |
239 | $gv->B::SV::debug; | |
240 | printf <<'EOT', $gv->SAFENAME, $gv->STASH->NAME, $gv->STASH, $$sv, $gv->GvREFCNT, $gv->FORM, $$av, ${$gv->HV}, ${$gv->EGV}, $$cv, $gv->CVGEN, $gv->LINE, $gv->FILE, $gv->GvFLAGS; | |
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 | |
252 | FILE %s | |
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 $order = shift; | |
267 | B::clearsym(); | |
268 | if ($order && $order eq "exec") { | |
269 | return sub { walkoptree_exec(main_start, "debug") } | |
270 | } else { | |
271 | return sub { walkoptree(main_root, "debug") } | |
272 | } | |
273 | } | |
274 | ||
275 | 1; | |
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 |