4 #include "hook_op_check.h"
6 #include "stolen_chunk_of_toke.c"
11 # define Newx(v,n,t) New(0,v,n,t)
14 #define DD_DEBUGf_UPDATED_LINESTR 1
15 #define DD_DEBUGf_TRACE 2
17 #define DD_DEBUG_UPDATED_LINESTR (dd_debug & DD_DEBUGf_UPDATED_LINESTR)
18 #define DD_DEBUG_TRACE (dd_debug & DD_DEBUGf_TRACE)
19 static int dd_debug = 0;
22 #define LEX_INTERPNORMAL 9
24 /* flag to trigger removal of temporary declaree sub */
26 static int in_declare = 0;
28 /* in 5.10, PL_parser will be NULL if we aren't parsing, and PL_lex_stuff
29 is a lookup into it - so if anything else we can use to tell, so we
30 need to be a bit more careful if PL_parser exists */
32 #define DD_AM_LEXING_CHECK (PL_lex_state == LEX_NORMAL || PL_lex_state == LEX_INTERPNORMAL)
34 #if defined(PL_parser) || defined(PERL_5_9_PLUS)
35 #define DD_HAVE_PARSER PL_parser
36 #define DD_HAVE_LEX_STUFF (PL_parser && PL_lex_stuff)
37 #define DD_AM_LEXING (PL_parser && DD_AM_LEXING_CHECK)
39 #define DD_HAVE_PARSER 1
40 #define DD_HAVE_LEX_STUFF PL_lex_stuff
41 #define DD_AM_LEXING DD_AM_LEXING_CHECK
44 /* thing that decides whether we're dealing with a declarator */
46 int dd_is_declarator(pTHX_ char* name) {
48 SV** is_declarator_pack_ref;
49 HV* is_declarator_pack_hash;
50 SV** is_declarator_flag_ref;
53 is_declarator = get_hv("Devel::Declare::declarators", FALSE);
58 /* $declarators{$current_package_name} */
60 if (!HvNAME(PL_curstash))
63 is_declarator_pack_ref = hv_fetch(is_declarator, HvNAME(PL_curstash),
64 strlen(HvNAME(PL_curstash)), FALSE);
66 if (!is_declarator_pack_ref || !SvROK(*is_declarator_pack_ref))
67 return -1; /* not a hashref */
69 is_declarator_pack_hash = (HV*) SvRV(*is_declarator_pack_ref);
71 /* $declarators{$current_package_name}{$name} */
73 is_declarator_flag_ref = hv_fetch(
74 is_declarator_pack_hash, name,
78 /* requires SvIOK as well as TRUE since flags not being an int is useless */
80 if (!is_declarator_flag_ref
81 || !SvIOK(*is_declarator_flag_ref)
82 || !SvTRUE(*is_declarator_flag_ref))
85 dd_flags = SvIVX(*is_declarator_flag_ref);
92 void dd_linestr_callback (pTHX_ char* type, char* name) {
94 char* linestr = SvPVX(PL_linestr);
95 int offset = PL_bufptr - linestr;
103 XPUSHs(sv_2mortal(newSVpv(type, 0)));
104 XPUSHs(sv_2mortal(newSVpv(name, 0)));
105 XPUSHs(sv_2mortal(newSViv(offset)));
108 call_pv("Devel::Declare::linestr_callback", G_VOID|G_DISCARD);
114 char* dd_get_linestr(pTHX) {
115 if (!DD_HAVE_PARSER) {
118 return SvPVX(PL_linestr);
121 void dd_set_linestr(pTHX_ char* new_value) {
122 unsigned int new_len = strlen(new_value);
124 if (SvLEN(PL_linestr) < new_len) {
125 croak("PL_linestr not long enough, was Devel::Declare loaded soon enough in %s",
126 CopFILE(&PL_compiling)
131 memcpy(SvPVX(PL_linestr), new_value, new_len+1);
133 SvCUR_set(PL_linestr, new_len);
135 PL_bufend = SvPVX(PL_linestr) + new_len;
137 if ( DD_DEBUG_UPDATED_LINESTR && PERLDB_LINE && PL_curstash != PL_debstash) {
138 // Cribbed from toke.c
139 SV * const sv = NEWSV(85,0);
141 sv_upgrade(sv, SVt_PVMG);
142 sv_setpvn(sv,PL_bufptr,PL_bufend-PL_bufptr);
145 av_store(CopFILEAV(&PL_compiling),(I32)CopLINE(&PL_compiling),sv);
149 char* dd_get_lex_stuff(pTHX) {
150 return (DD_HAVE_LEX_STUFF ? SvPVX(PL_lex_stuff) : "");
153 void dd_clear_lex_stuff(pTHX) {
155 PL_lex_stuff = (SV*)NULL;
158 char* dd_get_curstash_name(pTHX) {
159 return HvNAME(PL_curstash);
162 int dd_get_linestr_offset(pTHX) {
164 if (!DD_HAVE_PARSER) {
167 linestr = SvPVX(PL_linestr);
168 return PL_bufptr - linestr;
171 char* dd_move_past_token (pTHX_ char* s) {
174 * buffer will be at the beginning of the declarator, -unless- the
175 * declarator is at EOL in which case it'll be the next useful line
176 * so we don't short-circuit out if we don't find the declarator
179 while (s < PL_bufend && isSPACE(*s)) s++;
180 if (memEQ(s, PL_tokenbuf, strlen(PL_tokenbuf)))
181 s += strlen(PL_tokenbuf);
185 int dd_toke_move_past_token (pTHX_ int offset) {
186 char* base_s = SvPVX(PL_linestr) + offset;
187 char* s = dd_move_past_token(aTHX_ base_s);
191 int dd_toke_scan_word(pTHX_ int offset, int handle_package) {
192 char tmpbuf[sizeof PL_tokenbuf];
193 char* base_s = SvPVX(PL_linestr) + offset;
195 char* s = scan_word(base_s, tmpbuf, sizeof tmpbuf, handle_package, &len);
199 int dd_toke_scan_ident(pTHX_ int offset) {
200 char tmpbuf[sizeof PL_tokenbuf];
201 char* base_s = SvPVX(PL_linestr) + offset;
202 char* s = scan_ident(base_s, PL_bufend, tmpbuf, sizeof tmpbuf, 0);
206 int dd_toke_scan_str(pTHX_ int offset) {
207 STRLEN remaining = sv_len(PL_linestr) - offset;
208 SV* line_copy = newSVsv(PL_linestr);
209 char* base_s = SvPVX(PL_linestr) + offset;
210 char* s = scan_str(base_s, FALSE, FALSE);
211 if (s != base_s && sv_len(PL_lex_stuff) > remaining) {
212 int ret = (s - SvPVX(PL_linestr)) + remaining;
213 sv_catsv(line_copy, PL_linestr);
214 dd_set_linestr(aTHX_ SvPV_nolen(line_copy));
215 SvREFCNT_dec(line_copy);
221 int dd_toke_skipspace(pTHX_ int offset) {
222 char* base_s = SvPVX(PL_linestr) + offset;
223 char* s = skipspace_force(base_s);
227 /* replacement PL_check rv2cv entry */
229 STATIC OP *dd_ck_rv2cv(pTHX_ OP *o, void *user_data) {
234 PERL_UNUSED_VAR(user_data);
237 if (DD_DEBUG_TRACE) {
238 printf("Deconstructing declare\n");
239 printf("PL_bufptr: %s\n", PL_bufptr);
240 printf("bufend at: %i\n", PL_bufend - PL_bufptr);
241 printf("linestr: %s\n", SvPVX(PL_linestr));
242 printf("linestr len: %i\n", PL_bufend - SvPVX(PL_linestr));
250 call_pv("Devel::Declare::done_declare", G_VOID|G_DISCARD);
255 if (DD_DEBUG_TRACE) {
256 printf("PL_bufptr: %s\n", PL_bufptr);
257 printf("bufend at: %i\n", PL_bufend - PL_bufptr);
258 printf("linestr: %s\n", SvPVX(PL_linestr));
259 printf("linestr len: %i\n", PL_bufend - SvPVX(PL_linestr));
260 printf("actual len: %i\n", strlen(PL_bufptr));
265 kid = cUNOPo->op_first;
267 if (kid->op_type != OP_GV) /* not a GV so ignore */
271 return o; /* not lexing? */
273 if (DD_DEBUG_TRACE) {
274 printf("Checking GV %s -> %s\n", HvNAME(GvSTASH(kGVOP_gv)), GvNAME(kGVOP_gv));
277 dd_flags = dd_is_declarator(aTHX_ GvNAME(kGVOP_gv));
282 if (DD_DEBUG_TRACE) {
283 printf("dd_flags are: %i\n", dd_flags);
284 printf("PL_tokenbuf: %s\n", PL_tokenbuf);
287 dd_linestr_callback(aTHX_ "rv2cv", GvNAME(kGVOP_gv));
292 OP* dd_pp_entereval(pTHX) {
299 if (PL_op->op_private & OPpEVAL_HAS_HH) {
305 if (DD_DEBUG_TRACE) {
306 printf("mangling eval sv\n");
309 sv = sv_2mortal(newSVsv(sv));
312 if (!len || s[len-1] != ';') {
313 if (!(SvFLAGS(sv) & SVs_TEMP))
314 sv = sv_2mortal(newSVsv(sv));
315 sv_catpvn(sv, "\n;", 2);
321 if (PL_op->op_private & OPpEVAL_HAS_HH) {
325 return PL_ppaddr[OP_ENTEREVAL](aTHX);
328 STATIC OP *dd_ck_entereval(pTHX_ OP *o, void *user_data) {
329 PERL_UNUSED_VAR(user_data);
331 if (o->op_ppaddr == PL_ppaddr[OP_ENTEREVAL])
332 o->op_ppaddr = dd_pp_entereval;
336 static I32 dd_filter_realloc(pTHX_ int idx, SV *sv, int maxlen)
338 const I32 count = FILTER_READ(idx+1, sv, maxlen);
339 SvGROW(sv, 8192); /* please try not to have a line longer than this :) */
340 /* filter_del(dd_filter_realloc); */
344 STATIC OP *dd_ck_const(pTHX_ OP *o, void *user_data) {
348 PERL_UNUSED_VAR(user_data);
350 if (DD_HAVE_PARSER && PL_expect == XOPERATOR) {
354 /* if this is set, we just grabbed a delimited string or something,
355 not a bareword, so NO TOUCHY */
357 if (DD_HAVE_LEX_STUFF)
360 /* don't try and look this up if it's not a string const */
361 if (!SvPOK(cSVOPo->op_sv))
364 name = SvPVX(cSVOPo->op_sv);
366 dd_flags = dd_is_declarator(aTHX_ name);
371 switch (PL_lex_inwhat) {
384 if (strnEQ(PL_bufptr, "->", 2)) {
392 STRLEN old_offset = PL_bufptr - SvPVX(PL_linestr);
394 s = scan_word(s, buf, sizeof buf, FALSE, &len);
395 if (strnEQ(buf, name, len)) {
397 SV *inject = newSVpvn(SvPVX(PL_linestr), PL_bufptr - SvPVX(PL_linestr));
398 sv_catpvn(inject, buf, len);
401 sv_catpvn(inject, s, d - s);
403 if ((PL_bufend - d) >= 2 && strnEQ(d, "=>", 2)) {
408 dd_set_linestr(aTHX_ SvPV_nolen(inject));
409 PL_bufptr = SvPVX(PL_linestr) + old_offset;
410 SvREFCNT_dec (inject);
414 dd_linestr_callback(aTHX_ "const", name);
419 static int initialized = 0;
421 MODULE = Devel::Declare PACKAGE = Devel::Declare
428 if (!initialized++) {
429 hook_op_check(OP_RV2CV, dd_ck_rv2cv, NULL);
430 hook_op_check(OP_ENTEREVAL, dd_ck_entereval, NULL);
431 hook_op_check(OP_CONST, dd_ck_const, NULL);
433 filter_add(dd_filter_realloc, NULL);
438 RETVAL = dd_get_linestr(aTHX);
443 set_linestr(char* new_value)
445 dd_set_linestr(aTHX_ new_value);
450 RETVAL = dd_get_lex_stuff(aTHX);
457 dd_clear_lex_stuff(aTHX);
462 RETVAL = dd_get_curstash_name(aTHX);
469 RETVAL = dd_get_linestr_offset(aTHX);
474 toke_scan_word(int offset, int handle_package)
476 RETVAL = dd_toke_scan_word(aTHX_ offset, handle_package);
481 toke_move_past_token(int offset);
483 RETVAL = dd_toke_move_past_token(aTHX_ offset);
488 toke_scan_str(int offset);
490 RETVAL = dd_toke_scan_str(aTHX_ offset);
495 toke_scan_ident(int offset)
497 RETVAL = dd_toke_scan_ident(aTHX_ offset);
502 toke_skipspace(int offset)
504 RETVAL = dd_toke_skipspace(aTHX_ offset);
516 set_in_declare(int value)
523 char *debug_str = getenv ("DD_DEBUG");
525 dd_debug = strtol (debug_str, &endptr, 10);
526 if (*endptr != '\0') {