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1 | package B::Debug; |
2 | use strict; |
3 | use B qw(peekop class walkoptree walkoptree_exec |
4 | main_start main_root cstring sv_undef); |
5 | use B::Asmdata qw(@specialsv_name); |
6 | |
7 | my %done_gv; |
8 | |
9 | sub B::OP::debug { |
10 | my ($op) = @_; |
11 | printf <<'EOT', class($op), $$op, ${$op->next}, ${$op->sibling}, $op->ppaddr, $op->targ, $op->type, $op->seq, $op->flags, $op->private; |
12 | %s (0x%lx) |
13 | op_next 0x%x |
14 | op_sibling 0x%x |
15 | op_ppaddr %s |
16 | op_targ %d |
17 | op_type %d |
18 | op_seq %d |
19 | op_flags %d |
20 | op_private %d |
21 | EOT |
22 | } |
23 | |
24 | sub B::UNOP::debug { |
25 | my ($op) = @_; |
26 | $op->B::OP::debug(); |
27 | printf "\top_first\t0x%x\n", ${$op->first}; |
28 | } |
29 | |
30 | sub B::BINOP::debug { |
31 | my ($op) = @_; |
32 | $op->B::UNOP::debug(); |
33 | printf "\top_last\t\t0x%x\n", ${$op->last}; |
34 | } |
35 | |
36 | sub B::LOGOP::debug { |
37 | my ($op) = @_; |
38 | $op->B::UNOP::debug(); |
39 | printf "\top_other\t0x%x\n", ${$op->other}; |
40 | } |
41 | |
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42 | sub B::LISTOP::debug { |
43 | my ($op) = @_; |
44 | $op->B::BINOP::debug(); |
45 | printf "\top_children\t%d\n", $op->children; |
46 | } |
47 | |
48 | sub B::PMOP::debug { |
49 | my ($op) = @_; |
50 | $op->B::LISTOP::debug(); |
51 | printf "\top_pmreplroot\t0x%x\n", ${$op->pmreplroot}; |
52 | printf "\top_pmreplstart\t0x%x\n", ${$op->pmreplstart}; |
53 | printf "\top_pmnext\t0x%x\n", ${$op->pmnext}; |
54 | printf "\top_pmregexp->precomp\t%s\n", cstring($op->precomp); |
55 | printf "\top_pmflags\t0x%x\n", $op->pmflags; |
56 | $op->pmshort->debug; |
57 | $op->pmreplroot->debug; |
58 | } |
59 | |
60 | sub B::COP::debug { |
61 | my ($op) = @_; |
62 | $op->B::OP::debug(); |
63 | my ($filegv) = $op->filegv; |
b295d113 |
64 | printf <<'EOT', $op->label, ${$op->stash}, $$filegv, $op->seq, $op->arybase, $op->line, ${$op->warnings}; |
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65 | cop_label %s |
66 | cop_stash 0x%x |
67 | cop_filegv 0x%x |
68 | cop_seq %d |
69 | cop_arybase %d |
70 | cop_line %d |
b295d113 |
71 | cop_warnings 0x%x |
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72 | EOT |
73 | $filegv->debug; |
74 | } |
75 | |
76 | sub B::SVOP::debug { |
77 | my ($op) = @_; |
78 | $op->B::OP::debug(); |
79 | printf "\top_sv\t\t0x%x\n", ${$op->sv}; |
80 | $op->sv->debug; |
81 | } |
82 | |
83 | sub B::PVOP::debug { |
84 | my ($op) = @_; |
85 | $op->B::OP::debug(); |
86 | printf "\top_pv\t\t0x%x\n", $op->pv; |
87 | } |
88 | |
89 | sub B::GVOP::debug { |
90 | my ($op) = @_; |
91 | $op->B::OP::debug(); |
92 | printf "\top_gv\t\t0x%x\n", ${$op->gv}; |
93 | $op->gv->debug; |
94 | } |
95 | |
96 | sub B::CVOP::debug { |
97 | my ($op) = @_; |
98 | $op->B::OP::debug(); |
99 | printf "\top_cv\t\t0x%x\n", ${$op->cv}; |
100 | } |
101 | |
102 | sub B::NULL::debug { |
103 | my ($sv) = @_; |
104 | if ($$sv == ${sv_undef()}) { |
105 | print "&sv_undef\n"; |
106 | } else { |
107 | printf "NULL (0x%x)\n", $$sv; |
108 | } |
109 | } |
110 | |
111 | sub B::SV::debug { |
112 | my ($sv) = @_; |
113 | if (!$$sv) { |
114 | print class($sv), " = NULL\n"; |
115 | return; |
116 | } |
117 | printf <<'EOT', class($sv), $$sv, $sv->REFCNT, $sv->FLAGS; |
118 | %s (0x%x) |
119 | REFCNT %d |
120 | FLAGS 0x%x |
121 | EOT |
122 | } |
123 | |
124 | sub B::PV::debug { |
125 | my ($sv) = @_; |
126 | $sv->B::SV::debug(); |
127 | my $pv = $sv->PV(); |
128 | printf <<'EOT', cstring($pv), length($pv); |
129 | xpv_pv %s |
130 | xpv_cur %d |
131 | EOT |
132 | } |
133 | |
134 | sub B::IV::debug { |
135 | my ($sv) = @_; |
136 | $sv->B::SV::debug(); |
137 | printf "\txiv_iv\t\t%d\n", $sv->IV; |
138 | } |
139 | |
140 | sub B::NV::debug { |
141 | my ($sv) = @_; |
142 | $sv->B::IV::debug(); |
143 | printf "\txnv_nv\t\t%s\n", $sv->NV; |
144 | } |
145 | |
146 | sub B::PVIV::debug { |
147 | my ($sv) = @_; |
148 | $sv->B::PV::debug(); |
149 | printf "\txiv_iv\t\t%d\n", $sv->IV; |
150 | } |
151 | |
152 | sub B::PVNV::debug { |
153 | my ($sv) = @_; |
154 | $sv->B::PVIV::debug(); |
155 | printf "\txnv_nv\t\t%s\n", $sv->NV; |
156 | } |
157 | |
158 | sub B::PVLV::debug { |
159 | my ($sv) = @_; |
160 | $sv->B::PVNV::debug(); |
161 | printf "\txlv_targoff\t%d\n", $sv->TARGOFF; |
162 | printf "\txlv_targlen\t%u\n", $sv->TARGLEN; |
163 | printf "\txlv_type\t%s\n", cstring(chr($sv->TYPE)); |
164 | } |
165 | |
166 | sub B::BM::debug { |
167 | my ($sv) = @_; |
168 | $sv->B::PVNV::debug(); |
169 | printf "\txbm_useful\t%d\n", $sv->USEFUL; |
170 | printf "\txbm_previous\t%u\n", $sv->PREVIOUS; |
171 | printf "\txbm_rare\t%s\n", cstring(chr($sv->RARE)); |
172 | } |
173 | |
174 | sub B::CV::debug { |
175 | my ($sv) = @_; |
176 | $sv->B::PVNV::debug(); |
177 | my ($stash) = $sv->STASH; |
178 | my ($start) = $sv->START; |
179 | my ($root) = $sv->ROOT; |
180 | my ($padlist) = $sv->PADLIST; |
181 | my ($gv) = $sv->GV; |
182 | my ($filegv) = $sv->FILEGV; |
183 | printf <<'EOT', $$stash, $$start, $$root, $$gv, $$filegv, $sv->DEPTH, $padlist, ${$sv->OUTSIDE}; |
184 | STASH 0x%x |
185 | START 0x%x |
186 | ROOT 0x%x |
187 | GV 0x%x |
188 | FILEGV 0x%x |
189 | DEPTH %d |
190 | PADLIST 0x%x |
191 | OUTSIDE 0x%x |
192 | EOT |
193 | $start->debug if $start; |
194 | $root->debug if $root; |
195 | $gv->debug if $gv; |
196 | $filegv->debug if $filegv; |
197 | $padlist->debug if $padlist; |
198 | } |
199 | |
200 | sub B::AV::debug { |
201 | my ($av) = @_; |
202 | $av->B::SV::debug; |
203 | my(@array) = $av->ARRAY; |
204 | print "\tARRAY\t\t(", join(", ", map("0x" . $$_, @array)), ")\n"; |
205 | printf <<'EOT', scalar(@array), $av->MAX, $av->OFF, $av->AvFLAGS; |
206 | FILL %d |
207 | MAX %d |
208 | OFF %d |
209 | AvFLAGS %d |
210 | EOT |
211 | } |
212 | |
213 | sub B::GV::debug { |
214 | my ($gv) = @_; |
215 | if ($done_gv{$$gv}++) { |
216 | printf "GV %s::%s\n", $gv->STASH->NAME, $gv->NAME; |
217 | return; |
218 | } |
219 | my ($sv) = $gv->SV; |
220 | my ($av) = $gv->AV; |
221 | my ($cv) = $gv->CV; |
222 | $gv->B::SV::debug; |
223 | printf <<'EOT', $gv->NAME, $gv->STASH->NAME, $gv->STASH, $$sv, $gv->GvREFCNT, $gv->FORM, $$av, ${$gv->HV}, ${$gv->EGV}, $$cv, $gv->CVGEN, $gv->LINE, $gv->FILEGV, $gv->GvFLAGS; |
224 | NAME %s |
225 | STASH %s (0x%x) |
226 | SV 0x%x |
227 | GvREFCNT %d |
228 | FORM 0x%x |
229 | AV 0x%x |
230 | HV 0x%x |
231 | EGV 0x%x |
232 | CV 0x%x |
233 | CVGEN %d |
234 | LINE %d |
235 | FILEGV 0x%x |
236 | GvFLAGS 0x%x |
237 | EOT |
238 | $sv->debug if $sv; |
239 | $av->debug if $av; |
240 | $cv->debug if $cv; |
241 | } |
242 | |
243 | sub B::SPECIAL::debug { |
244 | my $sv = shift; |
245 | print $specialsv_name[$$sv], "\n"; |
246 | } |
247 | |
248 | sub compile { |
249 | my $order = shift; |
250 | if ($order eq "exec") { |
251 | return sub { walkoptree_exec(main_start, "debug") } |
252 | } else { |
253 | return sub { walkoptree(main_root, "debug") } |
254 | } |
255 | } |
256 | |
257 | 1; |
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258 | |
259 | __END__ |
260 | |
261 | =head1 NAME |
262 | |
263 | B::Debug - Walk Perl syntax tree, printing debug info about ops |
264 | |
265 | =head1 SYNOPSIS |
266 | |
267 | perl -MO=Debug[,OPTIONS] foo.pl |
268 | |
269 | =head1 DESCRIPTION |
270 | |
271 | See F<ext/B/README>. |
272 | |
273 | =head1 AUTHOR |
274 | |
275 | Malcolm Beattie, C<mbeattie@sable.ox.ac.uk> |
276 | |
277 | =cut |