4 #include "hook_op_check.h"
6 #include "stolen_chunk_of_toke.c"
10 #define PERL_VERSION_DECIMAL(r,v,s) (r*1000000 + v*1000 + s)
11 #define PERL_DECIMAL_VERSION \
12 PERL_VERSION_DECIMAL(PERL_REVISION,PERL_VERSION,PERL_SUBVERSION)
13 #define PERL_VERSION_GE(r,v,s) \
14 (PERL_DECIMAL_VERSION >= PERL_VERSION_DECIMAL(r,v,s))
17 # define Newx(v,n,t) New(0,v,n,t)
20 #define DD_DEBUGf_UPDATED_LINESTR 1
21 #define DD_DEBUGf_TRACE 2
23 #define DD_DEBUG_UPDATED_LINESTR (dd_debug & DD_DEBUGf_UPDATED_LINESTR)
24 #define DD_DEBUG_TRACE (dd_debug & DD_DEBUGf_TRACE)
25 static int dd_debug = 0;
27 #define DD_CONST_VIA_RV2CV PERL_VERSION_GE(5,11,2)
30 #define LEX_INTERPNORMAL 9
32 /* flag to trigger removal of temporary declaree sub */
34 static int in_declare = 0;
36 /* in 5.10, PL_parser will be NULL if we aren't parsing, and PL_lex_stuff
37 is a lookup into it - so if anything else we can use to tell, so we
38 need to be a bit more careful if PL_parser exists */
40 #define DD_AM_LEXING_CHECK (PL_lex_state == LEX_NORMAL || PL_lex_state == LEX_INTERPNORMAL)
42 #if defined(PL_parser) || defined(PERL_5_9_PLUS)
43 #define DD_HAVE_PARSER PL_parser
44 #define DD_HAVE_LEX_STUFF (PL_parser && PL_lex_stuff)
45 #define DD_AM_LEXING (PL_parser && DD_AM_LEXING_CHECK)
47 #define DD_HAVE_PARSER 1
48 #define DD_HAVE_LEX_STUFF PL_lex_stuff
49 #define DD_AM_LEXING DD_AM_LEXING_CHECK
52 /* thing that decides whether we're dealing with a declarator */
54 int dd_is_declarator(pTHX_ char* name) {
56 SV** is_declarator_pack_ref;
57 HV* is_declarator_pack_hash;
58 SV** is_declarator_flag_ref;
61 is_declarator = get_hv("Devel::Declare::declarators", FALSE);
66 /* $declarators{$current_package_name} */
68 if (!HvNAME(PL_curstash))
71 is_declarator_pack_ref = hv_fetch(is_declarator, HvNAME(PL_curstash),
72 strlen(HvNAME(PL_curstash)), FALSE);
74 if (!is_declarator_pack_ref || !SvROK(*is_declarator_pack_ref))
75 return -1; /* not a hashref */
77 is_declarator_pack_hash = (HV*) SvRV(*is_declarator_pack_ref);
79 /* $declarators{$current_package_name}{$name} */
81 is_declarator_flag_ref = hv_fetch(
82 is_declarator_pack_hash, name,
86 /* requires SvIOK as well as TRUE since flags not being an int is useless */
88 if (!is_declarator_flag_ref
89 || !SvIOK(*is_declarator_flag_ref)
90 || !SvTRUE(*is_declarator_flag_ref))
93 dd_flags = SvIVX(*is_declarator_flag_ref);
100 void dd_linestr_callback (pTHX_ char* type, char* name) {
102 char* linestr = SvPVX(PL_linestr);
103 int offset = PL_bufptr - linestr;
111 XPUSHs(sv_2mortal(newSVpv(type, 0)));
112 XPUSHs(sv_2mortal(newSVpv(name, 0)));
113 XPUSHs(sv_2mortal(newSViv(offset)));
116 call_pv("Devel::Declare::linestr_callback", G_VOID|G_DISCARD);
122 char* dd_get_linestr(pTHX) {
123 if (!DD_HAVE_PARSER) {
126 return SvPVX(PL_linestr);
129 void dd_set_linestr(pTHX_ char* new_value) {
130 unsigned int new_len = strlen(new_value);
132 if (SvLEN(PL_linestr) < new_len) {
133 croak("PL_linestr not long enough, was Devel::Declare loaded soon enough in %s",
134 CopFILE(&PL_compiling)
139 memcpy(SvPVX(PL_linestr), new_value, new_len+1);
141 SvCUR_set(PL_linestr, new_len);
143 PL_bufend = SvPVX(PL_linestr) + new_len;
145 if ( DD_DEBUG_UPDATED_LINESTR && PERLDB_LINE && PL_curstash != PL_debstash) {
146 // Cribbed from toke.c
147 SV * const sv = NEWSV(85,0);
149 sv_upgrade(sv, SVt_PVMG);
150 sv_setpvn(sv,PL_bufptr,PL_bufend-PL_bufptr);
153 av_store(CopFILEAV(&PL_compiling),(I32)CopLINE(&PL_compiling),sv);
157 char* dd_get_lex_stuff(pTHX) {
158 return (DD_HAVE_LEX_STUFF ? SvPVX(PL_lex_stuff) : "");
161 void dd_clear_lex_stuff(pTHX) {
163 PL_lex_stuff = (SV*)NULL;
166 char* dd_get_curstash_name(pTHX) {
167 return HvNAME(PL_curstash);
170 int dd_get_linestr_offset(pTHX) {
172 if (!DD_HAVE_PARSER) {
175 linestr = SvPVX(PL_linestr);
176 return PL_bufptr - linestr;
179 char* dd_move_past_token (pTHX_ char* s) {
182 * buffer will be at the beginning of the declarator, -unless- the
183 * declarator is at EOL in which case it'll be the next useful line
184 * so we don't short-circuit out if we don't find the declarator
187 while (s < PL_bufend && isSPACE(*s)) s++;
188 if (memEQ(s, PL_tokenbuf, strlen(PL_tokenbuf)))
189 s += strlen(PL_tokenbuf);
193 int dd_toke_move_past_token (pTHX_ int offset) {
194 char* base_s = SvPVX(PL_linestr) + offset;
195 char* s = dd_move_past_token(aTHX_ base_s);
199 int dd_toke_scan_word(pTHX_ int offset, int handle_package) {
200 char tmpbuf[sizeof PL_tokenbuf];
201 char* base_s = SvPVX(PL_linestr) + offset;
203 char* s = scan_word(base_s, tmpbuf, sizeof tmpbuf, handle_package, &len);
207 int dd_toke_scan_ident(pTHX_ int offset) {
208 char tmpbuf[sizeof PL_tokenbuf];
209 char* base_s = SvPVX(PL_linestr) + offset;
210 char* s = scan_ident(base_s, PL_bufend, tmpbuf, sizeof tmpbuf, 0);
214 int dd_toke_scan_str(pTHX_ int offset) {
215 STRLEN remaining = sv_len(PL_linestr) - offset;
216 SV* line_copy = newSVsv(PL_linestr);
217 char* base_s = SvPVX(PL_linestr) + offset;
218 char* s = scan_str(base_s, FALSE, FALSE);
219 if (s != base_s && sv_len(PL_lex_stuff) > remaining) {
220 int ret = (s - SvPVX(PL_linestr)) + remaining;
221 sv_catsv(line_copy, PL_linestr);
222 dd_set_linestr(aTHX_ SvPV_nolen(line_copy));
223 SvREFCNT_dec(line_copy);
229 int dd_toke_skipspace(pTHX_ int offset) {
230 char* base_s = SvPVX(PL_linestr) + offset;
231 char* s = skipspace_force(base_s);
235 static void call_done_declare(pTHX) {
238 if (DD_DEBUG_TRACE) {
239 printf("Deconstructing declare\n");
240 printf("PL_bufptr: %s\n", PL_bufptr);
241 printf("bufend at: %i\n", PL_bufend - PL_bufptr);
242 printf("linestr: %s\n", SvPVX(PL_linestr));
243 printf("linestr len: %i\n", PL_bufend - SvPVX(PL_linestr));
251 call_pv("Devel::Declare::done_declare", G_VOID|G_DISCARD);
256 if (DD_DEBUG_TRACE) {
257 printf("PL_bufptr: %s\n", PL_bufptr);
258 printf("bufend at: %i\n", PL_bufend - PL_bufptr);
259 printf("linestr: %s\n", SvPVX(PL_linestr));
260 printf("linestr len: %i\n", PL_bufend - SvPVX(PL_linestr));
261 printf("actual len: %i\n", strlen(PL_bufptr));
265 static int dd_handle_const(pTHX_ char *name);
267 /* replacement PL_check rv2cv entry */
269 STATIC OP *dd_ck_rv2cv(pTHX_ OP *o, void *user_data) {
273 PERL_UNUSED_VAR(user_data);
276 call_done_declare(aTHX);
280 kid = cUNOPo->op_first;
282 if (kid->op_type != OP_GV) /* not a GV so ignore */
286 return o; /* not lexing? */
288 if (DD_DEBUG_TRACE) {
289 printf("Checking GV %s -> %s\n", HvNAME(GvSTASH(kGVOP_gv)), GvNAME(kGVOP_gv));
292 dd_flags = dd_is_declarator(aTHX_ GvNAME(kGVOP_gv));
297 if (DD_DEBUG_TRACE) {
298 printf("dd_flags are: %i\n", dd_flags);
299 printf("PL_tokenbuf: %s\n", PL_tokenbuf);
302 #if DD_CONST_VIA_RV2CV
303 if (PL_expect != XOPERATOR) {
304 if (!dd_handle_const(aTHX_ GvNAME(kGVOP_gv)))
306 CopLINE(PL_curcop) = PL_copline;
307 /* The parser behaviour that we're simulating depends on what comes
308 after the declarator. */
309 if (*skipspace(PL_bufptr + strlen(GvNAME(kGVOP_gv))) != '(') {
311 call_done_declare(aTHX);
313 dd_linestr_callback(aTHX_ "rv2cv", GvNAME(kGVOP_gv));
318 #endif /* DD_CONST_VIA_RV2CV */
320 dd_linestr_callback(aTHX_ "rv2cv", GvNAME(kGVOP_gv));
325 OP* dd_pp_entereval(pTHX) {
332 if (PL_op->op_private & OPpEVAL_HAS_HH) {
338 if (DD_DEBUG_TRACE) {
339 printf("mangling eval sv\n");
342 sv = sv_2mortal(newSVsv(sv));
345 if (!len || s[len-1] != ';') {
346 if (!(SvFLAGS(sv) & SVs_TEMP))
347 sv = sv_2mortal(newSVsv(sv));
348 sv_catpvn(sv, "\n;", 2);
354 if (PL_op->op_private & OPpEVAL_HAS_HH) {
358 return PL_ppaddr[OP_ENTEREVAL](aTHX);
361 STATIC OP *dd_ck_entereval(pTHX_ OP *o, void *user_data) {
362 PERL_UNUSED_VAR(user_data);
364 if (o->op_ppaddr == PL_ppaddr[OP_ENTEREVAL])
365 o->op_ppaddr = dd_pp_entereval;
369 static I32 dd_filter_realloc(pTHX_ int idx, SV *sv, int maxlen)
371 const I32 count = FILTER_READ(idx+1, sv, maxlen);
372 SvGROW(sv, 8192); /* please try not to have a line longer than this :) */
373 /* filter_del(dd_filter_realloc); */
377 static int dd_handle_const(pTHX_ char *name) {
378 switch (PL_lex_inwhat) {
391 if (strnEQ(PL_bufptr, "->", 2)) {
399 STRLEN old_offset = PL_bufptr - SvPVX(PL_linestr);
401 s = scan_word(s, buf, sizeof buf, FALSE, &len);
402 if (strnEQ(buf, name, len)) {
404 SV *inject = newSVpvn(SvPVX(PL_linestr), PL_bufptr - SvPVX(PL_linestr));
405 sv_catpvn(inject, buf, len);
408 sv_catpvn(inject, s, d - s);
410 if ((PL_bufend - d) >= 2 && strnEQ(d, "=>", 2)) {
415 dd_set_linestr(aTHX_ SvPV_nolen(inject));
416 PL_bufptr = SvPVX(PL_linestr) + old_offset;
417 SvREFCNT_dec (inject);
421 dd_linestr_callback(aTHX_ "const", name);
426 #if !DD_CONST_VIA_RV2CV
428 STATIC OP *dd_ck_const(pTHX_ OP *o, void *user_data) {
432 PERL_UNUSED_VAR(user_data);
434 if (DD_HAVE_PARSER && PL_expect == XOPERATOR) {
438 /* if this is set, we just grabbed a delimited string or something,
439 not a bareword, so NO TOUCHY */
441 if (DD_HAVE_LEX_STUFF)
444 /* don't try and look this up if it's not a string const */
445 if (!SvPOK(cSVOPo->op_sv))
448 name = SvPVX(cSVOPo->op_sv);
450 dd_flags = dd_is_declarator(aTHX_ name);
455 dd_handle_const(aTHX_ name);
460 #endif /* !DD_CONST_VIA_RV2CV */
462 static int initialized = 0;
464 MODULE = Devel::Declare PACKAGE = Devel::Declare
471 if (!initialized++) {
472 hook_op_check(OP_RV2CV, dd_ck_rv2cv, NULL);
473 hook_op_check(OP_ENTEREVAL, dd_ck_entereval, NULL);
474 #if !DD_CONST_VIA_RV2CV
475 hook_op_check(OP_CONST, dd_ck_const, NULL);
476 #endif /* !DD_CONST_VIA_RV2CV */
478 filter_add(dd_filter_realloc, NULL);
483 RETVAL = dd_get_linestr(aTHX);
488 set_linestr(char* new_value)
490 dd_set_linestr(aTHX_ new_value);
495 RETVAL = dd_get_lex_stuff(aTHX);
502 dd_clear_lex_stuff(aTHX);
507 RETVAL = dd_get_curstash_name(aTHX);
514 RETVAL = dd_get_linestr_offset(aTHX);
519 toke_scan_word(int offset, int handle_package)
521 RETVAL = dd_toke_scan_word(aTHX_ offset, handle_package);
526 toke_move_past_token(int offset);
528 RETVAL = dd_toke_move_past_token(aTHX_ offset);
533 toke_scan_str(int offset);
535 RETVAL = dd_toke_scan_str(aTHX_ offset);
540 toke_scan_ident(int offset)
542 RETVAL = dd_toke_scan_ident(aTHX_ offset);
547 toke_skipspace(int offset)
549 RETVAL = dd_toke_skipspace(aTHX_ offset);
561 set_in_declare(int value)
568 char *debug_str = getenv ("DD_DEBUG");
570 dd_debug = strtol (debug_str, &endptr, 10);
571 if (*endptr != '\0') {