Commit | Line | Data |
94caac6e |
1 | #define PERL_CORE |
2 | #define PERL_NO_GET_CONTEXT |
94caac6e |
3 | #include "EXTERN.h" |
4 | #include "perl.h" |
5 | #include "XSUB.h" |
6 | #undef printf |
e807ee50 |
7 | #include "stolen_chunk_of_toke.c" |
94caac6e |
8 | #include <stdio.h> |
9 | #include <string.h> |
10 | |
9673d7ca |
11 | #ifndef Newx |
12 | # define Newx(v,n,t) New(0,v,n,t) |
13 | #endif /* !Newx */ |
14 | |
53e3ab32 |
15 | #if 0 |
16 | #define DD_DEBUG |
17 | #endif |
c630715a |
18 | |
19 | #ifdef DD_DEBUG |
20 | #define DD_DEBUG_S printf("Buffer: %s\n", s); |
21 | #else |
22 | #define DD_DEBUG_S |
23 | #endif |
24 | |
94caac6e |
25 | #define LEX_NORMAL 10 |
26 | #define LEX_INTERPNORMAL 9 |
27 | |
94caac6e |
28 | /* flag to trigger removal of temporary declaree sub */ |
29 | |
30 | static int in_declare = 0; |
31 | |
96f12726 |
32 | /* in 5.10, PL_parser will be NULL if we aren't parsing, and PL_lex_stuff |
33 | is a lookup into it - so if anything else we can use to tell, so we |
34 | need to be a bit more careful if PL_parser exists */ |
35 | |
36 | #define DD_AM_LEXING_CHECK (PL_lex_state == LEX_NORMAL || PL_lex_state == LEX_INTERPNORMAL) |
37 | |
38 | #ifdef PL_parser |
39 | #define DD_HAVE_PARSER PL_parser |
40 | #define DD_HAVE_LEX_STUFF (PL_parser && PL_lex_stuff) |
41 | #define DD_AM_LEXING (PL_parser && DD_AM_LEXING_CHECK) |
42 | #else |
43 | #define DD_HAVE_PARSER 1 |
44 | #define DD_HAVE_LEX_STUFF PL_lex_stuff |
45 | #define DD_AM_LEXING DD_AM_LEXING_CHECK |
46 | #endif |
47 | |
72f20f69 |
48 | /* thing that decides whether we're dealing with a declarator */ |
49 | |
50 | int dd_is_declarator(pTHX_ char* name) { |
51 | HV* is_declarator; |
52 | SV** is_declarator_pack_ref; |
53 | HV* is_declarator_pack_hash; |
54 | SV** is_declarator_flag_ref; |
55 | int dd_flags; |
56 | |
57 | is_declarator = get_hv("Devel::Declare::declarators", FALSE); |
58 | |
59 | if (!is_declarator) |
60 | return -1; |
61 | |
569ac469 |
62 | /* $declarators{$current_package_name} */ |
63 | |
72f20f69 |
64 | is_declarator_pack_ref = hv_fetch(is_declarator, HvNAME(PL_curstash), |
65 | strlen(HvNAME(PL_curstash)), FALSE); |
66 | |
67 | if (!is_declarator_pack_ref || !SvROK(*is_declarator_pack_ref)) |
68 | return -1; /* not a hashref */ |
69 | |
70 | is_declarator_pack_hash = (HV*) SvRV(*is_declarator_pack_ref); |
71 | |
569ac469 |
72 | /* $declarators{$current_package_name}{$name} */ |
73 | |
72f20f69 |
74 | is_declarator_flag_ref = hv_fetch( |
75 | is_declarator_pack_hash, name, |
76 | strlen(name), FALSE |
77 | ); |
78 | |
79 | /* requires SvIOK as well as TRUE since flags not being an int is useless */ |
80 | |
81 | if (!is_declarator_flag_ref |
82 | || !SvIOK(*is_declarator_flag_ref) |
83 | || !SvTRUE(*is_declarator_flag_ref)) |
84 | return -1; |
85 | |
86 | dd_flags = SvIVX(*is_declarator_flag_ref); |
87 | |
88 | return dd_flags; |
89 | } |
90 | |
569ac469 |
91 | /* callback thingy */ |
92 | |
a9bd9b5e |
93 | void dd_linestr_callback (pTHX_ char* type, char* name) { |
569ac469 |
94 | |
95 | char* linestr = SvPVX(PL_linestr); |
a9bd9b5e |
96 | int offset = PL_bufptr - linestr; |
569ac469 |
97 | |
569ac469 |
98 | dSP; |
99 | |
100 | ENTER; |
101 | SAVETMPS; |
102 | |
103 | PUSHMARK(SP); |
104 | XPUSHs(sv_2mortal(newSVpv(type, 0))); |
105 | XPUSHs(sv_2mortal(newSVpv(name, 0))); |
106 | XPUSHs(sv_2mortal(newSViv(offset))); |
107 | PUTBACK; |
108 | |
04a8a223 |
109 | call_pv("Devel::Declare::linestr_callback", G_VOID|G_DISCARD); |
569ac469 |
110 | |
569ac469 |
111 | FREETMPS; |
112 | LEAVE; |
113 | } |
114 | |
115 | char* dd_get_linestr(pTHX) { |
116 | return SvPVX(PL_linestr); |
117 | } |
118 | |
119 | void dd_set_linestr(pTHX_ char* new_value) { |
120 | int new_len = strlen(new_value); |
121 | char* old_linestr = SvPVX(PL_linestr); |
122 | |
123 | SvGROW(PL_linestr, strlen(new_value)); |
124 | |
125 | if (SvPVX(PL_linestr) != old_linestr) |
126 | Perl_croak(aTHX_ "forced to realloc PL_linestr for line %s, bailing out before we crash harder", SvPVX(PL_linestr)); |
127 | |
128 | memcpy(SvPVX(PL_linestr), new_value, new_len+1); |
129 | |
130 | SvCUR_set(PL_linestr, new_len); |
131 | |
132 | PL_bufend = SvPVX(PL_linestr) + new_len; |
133 | } |
134 | |
04a8a223 |
135 | char* dd_get_lex_stuff(pTHX) { |
96f12726 |
136 | return (DD_HAVE_LEX_STUFF ? SvPVX(PL_lex_stuff) : ""); |
04a8a223 |
137 | } |
138 | |
139 | char* dd_clear_lex_stuff(pTHX) { |
96f12726 |
140 | if (DD_HAVE_PARSER) |
f05cbc90 |
141 | PL_lex_stuff = (SV*)NULL; |
04a8a223 |
142 | } |
143 | |
144 | char* dd_get_curstash_name(pTHX) { |
145 | return HvNAME(PL_curstash); |
146 | } |
147 | |
022eb0cc |
148 | int dd_get_linestr_offset(pTHX) { |
149 | char* linestr = SvPVX(PL_linestr); |
150 | return PL_bufptr - linestr; |
151 | } |
152 | |
840ebcbb |
153 | char* dd_move_past_token (pTHX_ char* s) { |
923c07a8 |
154 | |
155 | /* |
156 | * buffer will be at the beginning of the declarator, -unless- the |
157 | * declarator is at EOL in which case it'll be the next useful line |
158 | * so we don't short-circuit out if we don't find the declarator |
159 | */ |
160 | |
161 | while (s < PL_bufend && isSPACE(*s)) s++; |
162 | if (memEQ(s, PL_tokenbuf, strlen(PL_tokenbuf))) |
163 | s += strlen(PL_tokenbuf); |
164 | return s; |
165 | } |
166 | |
840ebcbb |
167 | int dd_toke_move_past_token (pTHX_ int offset) { |
04a8a223 |
168 | char* base_s = SvPVX(PL_linestr) + offset; |
169 | char* s = dd_move_past_token(aTHX_ base_s); |
170 | return s - base_s; |
171 | } |
172 | |
923c07a8 |
173 | int dd_toke_scan_word(pTHX_ int offset, int handle_package) { |
174 | char tmpbuf[sizeof PL_tokenbuf]; |
175 | char* base_s = SvPVX(PL_linestr) + offset; |
176 | STRLEN len; |
177 | char* s = scan_word(base_s, tmpbuf, sizeof tmpbuf, handle_package, &len); |
178 | return s - base_s; |
179 | } |
180 | |
181 | int dd_toke_scan_str(pTHX_ int offset) { |
182 | char* base_s = SvPVX(PL_linestr) + offset; |
183 | char* s = scan_str(base_s, FALSE, FALSE); |
184 | return s - base_s; |
185 | } |
186 | |
187 | int dd_toke_skipspace(pTHX_ int offset) { |
188 | char* base_s = SvPVX(PL_linestr) + offset; |
189 | char* s = skipspace(base_s); |
190 | return s - base_s; |
191 | } |
192 | |
94caac6e |
193 | /* replacement PL_check rv2cv entry */ |
194 | |
bedac9ff |
195 | STATIC OP *(*dd_old_ck_rv2cv)(pTHX_ OP *op); |
196 | |
94caac6e |
197 | STATIC OP *dd_ck_rv2cv(pTHX_ OP *o) { |
198 | OP* kid; |
0ba8c7aa |
199 | int dd_flags; |
9026391e |
200 | char* cb_args[6]; |
94caac6e |
201 | |
202 | o = dd_old_ck_rv2cv(aTHX_ o); /* let the original do its job */ |
203 | |
204 | if (in_declare) { |
840ebcbb |
205 | cb_args[0] = NULL; |
206 | #ifdef DD_DEBUG |
207 | printf("Deconstructing declare\n"); |
208 | printf("PL_bufptr: %s\n", PL_bufptr); |
209 | printf("bufend at: %i\n", PL_bufend - PL_bufptr); |
210 | printf("linestr: %s\n", SvPVX(PL_linestr)); |
211 | printf("linestr len: %i\n", PL_bufend - SvPVX(PL_linestr)); |
212 | #endif |
213 | call_argv("Devel::Declare::done_declare", G_VOID|G_DISCARD, cb_args); |
214 | #ifdef DD_DEBUG |
215 | printf("PL_bufptr: %s\n", PL_bufptr); |
216 | printf("bufend at: %i\n", PL_bufend - PL_bufptr); |
217 | printf("linestr: %s\n", SvPVX(PL_linestr)); |
218 | printf("linestr len: %i\n", PL_bufend - SvPVX(PL_linestr)); |
219 | printf("actual len: %i\n", strlen(PL_bufptr)); |
220 | #endif |
94caac6e |
221 | return o; |
222 | } |
223 | |
224 | kid = cUNOPo->op_first; |
225 | |
226 | if (kid->op_type != OP_GV) /* not a GV so ignore */ |
227 | return o; |
228 | |
96f12726 |
229 | if (!DD_AM_LEXING) |
94caac6e |
230 | return o; /* not lexing? */ |
231 | |
840ebcbb |
232 | #ifdef DD_DEBUG |
233 | printf("Checking GV %s -> %s\n", HvNAME(GvSTASH(kGVOP_gv)), GvNAME(kGVOP_gv)); |
234 | #endif |
235 | |
72f20f69 |
236 | dd_flags = dd_is_declarator(aTHX_ GvNAME(kGVOP_gv)); |
94caac6e |
237 | |
72f20f69 |
238 | if (dd_flags == -1) |
94caac6e |
239 | return o; |
240 | |
840ebcbb |
241 | #ifdef DD_DEBUG |
242 | printf("dd_flags are: %i\n", dd_flags); |
243 | #endif |
244 | |
245 | #ifdef DD_DEBUG |
246 | printf("PL_tokenbuf: %s\n", PL_tokenbuf); |
247 | #endif |
248 | |
a9bd9b5e |
249 | dd_linestr_callback(aTHX_ "rv2cv", GvNAME(kGVOP_gv)); |
94caac6e |
250 | |
53e3ab32 |
251 | return o; |
252 | } |
253 | |
bedac9ff |
254 | STATIC OP *(*dd_old_ck_entereval)(pTHX_ OP *op); |
255 | |
b7505981 |
256 | OP* dd_pp_entereval(pTHX) { |
257 | dSP; |
258 | dPOPss; |
259 | STRLEN len; |
260 | const char* s; |
261 | if (SvPOK(sv)) { |
53e3ab32 |
262 | #ifdef DD_DEBUG |
b7505981 |
263 | printf("mangling eval sv\n"); |
53e3ab32 |
264 | #endif |
b7505981 |
265 | if (SvREADONLY(sv)) |
266 | sv = sv_2mortal(newSVsv(sv)); |
267 | s = SvPVX(sv); |
268 | len = SvCUR(sv); |
269 | if (!len || s[len-1] != ';') { |
270 | if (!(SvFLAGS(sv) & SVs_TEMP)) |
271 | sv = sv_2mortal(newSVsv(sv)); |
272 | sv_catpvn(sv, "\n;", 2); |
53e3ab32 |
273 | } |
b7505981 |
274 | SvGROW(sv, 8192); |
53e3ab32 |
275 | } |
b7505981 |
276 | PUSHs(sv); |
277 | return PL_ppaddr[OP_ENTEREVAL](aTHX); |
278 | } |
53e3ab32 |
279 | |
b7505981 |
280 | STATIC OP *dd_ck_entereval(pTHX_ OP *o) { |
281 | o = dd_old_ck_entereval(aTHX_ o); /* let the original do its job */ |
d8e65fc8 |
282 | if (o->op_ppaddr == PL_ppaddr[OP_ENTEREVAL]) |
283 | o->op_ppaddr = dd_pp_entereval; |
94caac6e |
284 | return o; |
285 | } |
286 | |
6a0bcf35 |
287 | static I32 dd_filter_realloc(pTHX_ int idx, SV *sv, int maxlen) |
288 | { |
289 | const I32 count = FILTER_READ(idx+1, sv, maxlen); |
290 | SvGROW(sv, 8192); /* please try not to have a line longer than this :) */ |
291 | /* filter_del(dd_filter_realloc); */ |
292 | return count; |
293 | } |
294 | |
bedac9ff |
295 | STATIC OP *(*dd_old_ck_const)(pTHX_ OP*op); |
296 | |
297 | STATIC OP *dd_ck_const(pTHX_ OP *o) { |
bedac9ff |
298 | int dd_flags; |
299 | char* s; |
04a8a223 |
300 | char* name; |
bedac9ff |
301 | |
302 | o = dd_old_ck_const(aTHX_ o); /* let the original do its job */ |
303 | |
34335b63 |
304 | /* if this is set, we just grabbed a delimited string or something, |
305 | not a bareword, so NO TOUCHY */ |
306 | |
79abf18a |
307 | if (DD_HAVE_LEX_STUFF) |
34335b63 |
308 | return o; |
309 | |
bedac9ff |
310 | /* don't try and look this up if it's not a string const */ |
311 | if (!SvPOK(cSVOPo->op_sv)) |
312 | return o; |
313 | |
04a8a223 |
314 | name = SvPVX(cSVOPo->op_sv); |
315 | |
316 | dd_flags = dd_is_declarator(aTHX_ name); |
bedac9ff |
317 | |
a9fb5fb1 |
318 | if (dd_flags == -1) |
bedac9ff |
319 | return o; |
320 | |
a9bd9b5e |
321 | dd_linestr_callback(aTHX_ "const", name); |
bedac9ff |
322 | |
bedac9ff |
323 | return o; |
324 | } |
325 | |
94caac6e |
326 | static int initialized = 0; |
327 | |
328 | MODULE = Devel::Declare PACKAGE = Devel::Declare |
329 | |
330 | PROTOTYPES: DISABLE |
331 | |
332 | void |
333 | setup() |
334 | CODE: |
335 | if (!initialized++) { |
336 | dd_old_ck_rv2cv = PL_check[OP_RV2CV]; |
337 | PL_check[OP_RV2CV] = dd_ck_rv2cv; |
b7505981 |
338 | dd_old_ck_entereval = PL_check[OP_ENTEREVAL]; |
339 | PL_check[OP_ENTEREVAL] = dd_ck_entereval; |
bedac9ff |
340 | dd_old_ck_const = PL_check[OP_CONST]; |
341 | PL_check[OP_CONST] = dd_ck_const; |
94caac6e |
342 | } |
6a0bcf35 |
343 | filter_add(dd_filter_realloc, NULL); |
569ac469 |
344 | |
345 | char* |
346 | get_linestr() |
347 | CODE: |
348 | RETVAL = dd_get_linestr(aTHX); |
349 | OUTPUT: |
350 | RETVAL |
923c07a8 |
351 | |
352 | void |
353 | set_linestr(char* new_value) |
354 | CODE: |
355 | dd_set_linestr(aTHX_ new_value); |
356 | |
04a8a223 |
357 | char* |
358 | get_lex_stuff() |
359 | CODE: |
360 | RETVAL = dd_get_lex_stuff(aTHX); |
361 | OUTPUT: |
362 | RETVAL |
363 | |
364 | void |
365 | clear_lex_stuff() |
366 | CODE: |
367 | dd_clear_lex_stuff(aTHX); |
368 | |
369 | char* |
370 | get_curstash_name() |
371 | CODE: |
372 | RETVAL = dd_get_curstash_name(aTHX); |
373 | OUTPUT: |
374 | RETVAL |
375 | |
923c07a8 |
376 | int |
022eb0cc |
377 | get_linestr_offset() |
378 | CODE: |
379 | RETVAL = dd_get_linestr_offset(aTHX); |
380 | OUTPUT: |
381 | RETVAL |
382 | |
383 | int |
923c07a8 |
384 | toke_scan_word(int offset, int handle_package) |
385 | CODE: |
386 | RETVAL = dd_toke_scan_word(aTHX_ offset, handle_package); |
387 | OUTPUT: |
388 | RETVAL |
389 | |
390 | int |
04a8a223 |
391 | toke_move_past_token(int offset); |
392 | CODE: |
393 | RETVAL = dd_toke_move_past_token(aTHX_ offset); |
394 | OUTPUT: |
395 | RETVAL |
396 | |
397 | int |
923c07a8 |
398 | toke_scan_str(int offset); |
399 | CODE: |
400 | RETVAL = dd_toke_scan_str(aTHX_ offset); |
401 | OUTPUT: |
402 | RETVAL |
403 | |
404 | int |
405 | toke_skipspace(int offset) |
406 | CODE: |
407 | RETVAL = dd_toke_skipspace(aTHX_ offset); |
408 | OUTPUT: |
409 | RETVAL |
04a8a223 |
410 | |
411 | int |
412 | get_in_declare() |
413 | CODE: |
414 | RETVAL = in_declare; |
415 | OUTPUT: |
416 | RETVAL |
417 | |
418 | void |
419 | set_in_declare(int value) |
420 | CODE: |
421 | in_declare = value; |