Commit | Line | Data |
7d96ae4d |
1 | /* |
2 | * full definition of built-in type constraints (ware in Moose::Util::TypeConstraints::OptimizedConstraints) |
3 | */ |
4 | |
5 | #include "mouse.h" |
6 | |
7 | #if PERL_BCDVERSION >= 0x5008005 |
8 | #define LooksLikeNumber(sv) looks_like_number(sv) |
9 | #else |
10 | #define LooksLikeNumber(sv) ( SvPOKp(sv) ? looks_like_number(sv) : SvNIOKp(sv) ) |
11 | #endif |
12 | |
13 | #ifndef SvRXOK |
14 | #define SvRXOK(sv) (SvROK(sv) && SvMAGICAL(SvRV(sv)) && mg_find(SvRV(sv), PERL_MAGIC_qr)) |
15 | #endif |
16 | |
1d5ecd5f |
17 | int |
18 | mouse_tc_check(pTHX_ SV* const tc_code, SV* const sv) { |
19 | if(SvIOK(tc_code)){ /* built-in type constraints */ |
20 | return mouse_builtin_tc_check(aTHX_ SvIVX(tc_code), sv); |
21 | } |
22 | else { |
23 | int ok; |
24 | dSP; |
25 | |
26 | ENTER; |
27 | SAVETMPS; |
28 | |
29 | PUSHMARK(SP); |
30 | XPUSHs(sv); |
31 | PUTBACK; |
32 | |
33 | call_sv(tc_code, G_SCALAR); |
34 | |
35 | SPAGAIN; |
36 | ok = SvTRUEx(POPs); |
37 | PUTBACK; |
38 | |
39 | FREETMPS; |
40 | LEAVE; |
41 | |
42 | return ok; |
43 | } |
44 | } |
7d96ae4d |
45 | |
46 | int |
1d5ecd5f |
47 | mouse_builtin_tc_check(pTHX_ mouse_tc const tc, SV* const sv) { |
7d96ae4d |
48 | switch(tc){ |
49 | case MOUSE_TC_ANY: return mouse_tc_Any(aTHX_ sv); |
50 | case MOUSE_TC_ITEM: return mouse_tc_Any(aTHX_ sv); |
51 | case MOUSE_TC_UNDEF: return mouse_tc_Undef(aTHX_ sv); |
52 | case MOUSE_TC_DEFINED: return mouse_tc_Defined(aTHX_ sv); |
53 | case MOUSE_TC_BOOL: return mouse_tc_Bool(aTHX_ sv); |
54 | case MOUSE_TC_VALUE: return mouse_tc_Value(aTHX_ sv); |
55 | case MOUSE_TC_REF: return mouse_tc_Ref(aTHX_ sv); |
56 | case MOUSE_TC_STR: return mouse_tc_Str(aTHX_ sv); |
57 | case MOUSE_TC_NUM: return mouse_tc_Num(aTHX_ sv); |
58 | case MOUSE_TC_INT: return mouse_tc_Int(aTHX_ sv); |
59 | case MOUSE_TC_SCALAR_REF: return mouse_tc_ScalarRef(aTHX_ sv); |
60 | case MOUSE_TC_ARRAY_REF: return mouse_tc_ArrayRef(aTHX_ sv); |
61 | case MOUSE_TC_HASH_REF: return mouse_tc_HashRef(aTHX_ sv); |
62 | case MOUSE_TC_CODE_REF: return mouse_tc_CodeRef(aTHX_ sv); |
63 | case MOUSE_TC_GLOB_REF: return mouse_tc_GlobRef(aTHX_ sv); |
64 | case MOUSE_TC_FILEHANDLE: return mouse_tc_FileHandle(aTHX_ sv); |
65 | case MOUSE_TC_REGEXP_REF: return mouse_tc_RegexpRef(aTHX_ sv); |
66 | case MOUSE_TC_OBJECT: return mouse_tc_Object(aTHX_ sv); |
67 | case MOUSE_TC_CLASS_NAME: return mouse_tc_ClassName(aTHX_ sv); |
68 | case MOUSE_TC_ROLE_NAME: return mouse_tc_RoleName(aTHX_ sv); |
69 | default: |
70 | /* custom type constraints */ |
71 | NOOP; |
72 | } |
73 | |
74 | croak("Custom type constraint is not yet implemented"); |
75 | return FALSE; /* not reached */ |
76 | } |
77 | |
78 | |
79 | /* |
80 | The following type check functions return an integer, not a bool, to keep them simple, |
81 | so if you assign these return value to bool variable, you must use "expr ? TRUE : FALSE". |
82 | */ |
83 | |
84 | int |
85 | mouse_tc_Any(pTHX_ SV* const sv PERL_UNUSED_DECL) { |
86 | assert(sv); |
87 | return TRUE; |
88 | } |
89 | |
90 | int |
91 | mouse_tc_Bool(pTHX_ SV* const sv) { |
92 | assert(sv); |
93 | if(SvOK(sv)){ |
94 | if(SvIOKp(sv)){ |
95 | return SvIVX(sv) == 1 || SvIVX(sv) == 0; |
96 | } |
97 | else if(SvNOKp(sv)){ |
98 | return SvNVX(sv) == 1.0 || SvNVX(sv) == 0.0; |
99 | } |
100 | else if(SvPOKp(sv)){ /* "" or "1" or "0" */ |
101 | return SvCUR(sv) == 0 |
102 | || ( SvCUR(sv) == 1 && ( SvPVX(sv)[0] == '1' || SvPVX(sv)[0] == '0' ) ); |
103 | } |
104 | else{ |
105 | return FALSE; |
106 | } |
107 | } |
108 | else{ |
109 | return TRUE; |
110 | } |
111 | } |
112 | |
113 | int |
114 | mouse_tc_Undef(pTHX_ SV* const sv) { |
115 | assert(sv); |
116 | return !SvOK(sv); |
117 | } |
118 | |
119 | int |
120 | mouse_tc_Defined(pTHX_ SV* const sv) { |
121 | assert(sv); |
122 | return SvOK(sv); |
123 | } |
124 | |
125 | int |
126 | mouse_tc_Value(pTHX_ SV* const sv) { |
127 | assert(sv); |
128 | return SvOK(sv) && !SvROK(sv); |
129 | } |
130 | |
131 | int |
132 | mouse_tc_Num(pTHX_ SV* const sv) { |
133 | assert(sv); |
134 | return LooksLikeNumber(sv); |
135 | } |
136 | |
137 | int |
138 | mouse_tc_Int(pTHX_ SV* const sv) { |
139 | assert(sv); |
140 | if(SvIOKp(sv)){ |
141 | return TRUE; |
142 | } |
143 | else if(SvNOKp(sv)){ |
144 | NV const nv = SvNVX(sv); |
145 | return nv > 0 ? (nv == (NV)(UV)nv) : (nv == (NV)(IV)nv); |
146 | } |
147 | else if(SvPOKp(sv)){ |
148 | int const num_type = grok_number(SvPVX(sv), SvCUR(sv), NULL); |
149 | if(num_type){ |
150 | return !(num_type & IS_NUMBER_NOT_INT); |
151 | } |
152 | } |
153 | return FALSE; |
154 | } |
155 | |
156 | int |
157 | mouse_tc_Str(pTHX_ SV* const sv) { |
158 | assert(sv); |
159 | return SvOK(sv) && !SvROK(sv) && !isGV(sv); |
160 | } |
161 | |
162 | int |
163 | mouse_tc_ClassName(pTHX_ SV* const sv){ |
164 | assert(sv); |
165 | return is_class_loaded(sv); |
166 | } |
167 | |
168 | int |
169 | mouse_tc_RoleName(pTHX_ SV* const sv) { |
170 | assert(sv); |
171 | if(is_class_loaded(sv)){ |
172 | int ok; |
173 | SV* meta; |
174 | dSP; |
175 | |
176 | ENTER; |
177 | SAVETMPS; |
178 | |
179 | PUSHMARK(SP); |
180 | XPUSHs(sv); |
181 | PUTBACK; |
182 | call_pv("Mouse::Util::get_metaclass_by_name", G_SCALAR); |
183 | SPAGAIN; |
184 | meta = POPs; |
185 | PUTBACK; |
186 | |
187 | ok = is_instance_of(meta, newSVpvs_flags("Mouse::Meta::Role", SVs_TEMP)); |
188 | |
189 | FREETMPS; |
190 | LEAVE; |
191 | |
192 | return ok; |
193 | } |
194 | return FALSE; |
195 | } |
196 | |
197 | int |
198 | mouse_tc_Ref(pTHX_ SV* const sv) { |
199 | assert(sv); |
200 | return SvROK(sv); |
201 | } |
202 | |
203 | int |
204 | mouse_tc_ScalarRef(pTHX_ SV* const sv) { |
205 | assert(sv); |
206 | return SvROK(sv) && !SvOBJECT(SvRV(sv)) && (SvTYPE(SvRV(sv)) <= SVt_PVLV && !isGV(SvRV(sv))); |
207 | } |
208 | |
209 | int |
210 | mouse_tc_ArrayRef(pTHX_ SV* const sv) { |
211 | assert(sv); |
212 | return SvROK(sv) && !SvOBJECT(SvRV(sv)) && SvTYPE(SvRV(sv)) == SVt_PVAV; |
213 | } |
214 | |
215 | int |
216 | mouse_tc_HashRef(pTHX_ SV* const sv) { |
217 | assert(sv); |
218 | return SvROK(sv) && !SvOBJECT(SvRV(sv)) && SvTYPE(SvRV(sv)) == SVt_PVHV; |
219 | } |
220 | |
221 | int |
222 | mouse_tc_CodeRef(pTHX_ SV* const sv) { |
223 | assert(sv); |
224 | return SvROK(sv) && !SvOBJECT(SvRV(sv))&& SvTYPE(SvRV(sv)) == SVt_PVCV; |
225 | } |
226 | |
227 | int |
228 | mouse_tc_RegexpRef(pTHX_ SV* const sv) { |
229 | assert(sv); |
230 | return SvRXOK(sv); |
231 | } |
232 | |
233 | int |
234 | mouse_tc_GlobRef(pTHX_ SV* const sv) { |
235 | assert(sv); |
236 | return SvROK(sv) && !SvOBJECT(SvRV(sv)) && isGV(SvRV(sv)); |
237 | } |
238 | |
239 | int |
240 | mouse_tc_FileHandle(pTHX_ SV* const sv) { |
241 | GV* gv; |
242 | assert(sv); |
243 | |
244 | /* see pp_fileno() in pp_sys.c and Scalar::Util::openhandle() */ |
245 | |
246 | gv = (GV*)(SvROK(sv) ? SvRV(sv) : sv); |
247 | if(isGV(gv) || SvTYPE(gv) == SVt_PVIO){ |
248 | IO* const io = isGV(gv) ? GvIO(gv) : (IO*)gv; |
249 | |
250 | if(io && ( IoIFP(io) || SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar) )){ |
251 | return TRUE; |
252 | } |
253 | } |
254 | |
255 | return is_instance_of(sv, newSVpvs_flags("IO::Handle", SVs_TEMP)); |
256 | } |
257 | |
258 | int |
259 | mouse_tc_Object(pTHX_ SV* const sv) { |
260 | assert(sv); |
261 | return SvROK(sv) && SvOBJECT(SvRV(sv)) && !SvRXOK(sv); |
262 | } |
263 | |
1d5ecd5f |
264 | /* |
265 | * This class_type generator is taken from Scalar::Util::Instance |
266 | */ |
267 | |
268 | #define MY_CXT_KEY "Mouse::Util::TypeConstraints::_guts" XS_VERSION |
269 | typedef struct sui_cxt{ |
270 | GV* universal_isa; |
271 | } my_cxt_t; |
272 | START_MY_CXT |
273 | |
274 | #define MG_klass_stash(mg) ((HV*)(mg)->mg_obj) |
275 | #define MG_klass_pv(mg) ((mg)->mg_ptr) |
276 | #define MG_klass_len(mg) ((mg)->mg_len) |
277 | |
f48920c1 |
278 | const char* |
279 | mouse_canonicalize_package_name(const char* name){ |
1d5ecd5f |
280 | |
281 | /* "::Foo" -> "Foo" */ |
282 | if(name[0] == ':' && name[1] == ':'){ |
283 | name += 2; |
284 | } |
285 | |
286 | /* "main::main::main::Foo" -> "Foo" */ |
287 | while(strnEQ(name, "main::", sizeof("main::")-1)){ |
288 | name += sizeof("main::")-1; |
289 | } |
290 | |
291 | return name; |
292 | } |
293 | |
294 | static int |
295 | lookup_isa(pTHX_ HV* const instance_stash, const char* const klass_pv){ |
296 | AV* const linearized_isa = mro_get_linear_isa(instance_stash); |
297 | SV** svp = AvARRAY(linearized_isa); |
298 | SV** const end = svp + AvFILLp(linearized_isa) + 1; |
299 | |
300 | while(svp != end){ |
301 | assert(SvPVX(*svp)); |
f48920c1 |
302 | if(strEQ(klass_pv, mouse_canonicalize_package_name(SvPVX(*svp)))){ |
1d5ecd5f |
303 | return TRUE; |
304 | } |
305 | svp++; |
306 | } |
307 | return FALSE; |
308 | } |
309 | |
310 | static int |
311 | instance_isa(pTHX_ SV* const instance, const MAGIC* const mg){ |
312 | dMY_CXT; |
313 | HV* const instance_stash = SvSTASH(SvRV(instance)); |
314 | GV* const instance_isa = gv_fetchmeth_autoload(instance_stash, "isa", sizeof("isa")-1, 0); |
315 | |
316 | /* the instance has no own isa method */ |
317 | if(instance_isa == NULL || GvCV(instance_isa) == GvCV(MY_CXT.universal_isa)){ |
318 | return MG_klass_stash(mg) == instance_stash |
319 | || lookup_isa(aTHX_ instance_stash, MG_klass_pv(mg)); |
320 | } |
321 | /* the instance has its own isa method */ |
322 | else { |
323 | int retval; |
324 | dSP; |
325 | |
326 | ENTER; |
327 | SAVETMPS; |
328 | |
329 | PUSHMARK(SP); |
330 | EXTEND(SP, 2); |
331 | PUSHs(instance); |
332 | mPUSHp(MG_klass_pv(mg), MG_klass_len(mg)); |
333 | PUTBACK; |
334 | |
335 | call_sv((SV*)instance_isa, G_SCALAR); |
336 | |
337 | SPAGAIN; |
338 | |
339 | retval = SvTRUEx(POPs); |
340 | |
341 | PUTBACK; |
342 | |
343 | FREETMPS; |
344 | LEAVE; |
345 | |
346 | return retval; |
347 | } |
348 | } |
349 | |
f48920c1 |
350 | |
1d5ecd5f |
351 | XS(XS_isa_check){ |
352 | dVAR; |
353 | dXSARGS; |
354 | SV* sv; |
355 | |
356 | assert(XSANY.any_ptr != NULL); |
357 | |
358 | if(items != 1){ |
359 | if(items < 1){ |
360 | croak("Not enough arguments for is-a predicate"); |
361 | } |
362 | else{ |
363 | croak("Too many arguments for is-a predicate"); |
364 | } |
365 | } |
366 | |
367 | sv = ST(0); |
368 | SvGETMAGIC(sv); |
369 | |
370 | ST(0) = boolSV( SvROK(sv) && SvOBJECT(SvRV(sv)) && instance_isa(aTHX_ sv, (MAGIC*)XSANY.any_ptr) ); |
371 | XSRETURN(1); |
372 | } |
373 | |
f48920c1 |
374 | |
1d5ecd5f |
375 | XS(XS_isa_check_for_universal){ |
376 | dVAR; |
377 | dXSARGS; |
378 | SV* sv; |
379 | PERL_UNUSED_VAR(cv); |
380 | |
381 | if(items != 1){ |
382 | if(items < 1){ |
383 | croak("Not enough arguments for is-a predicate"); |
384 | } |
385 | else{ |
386 | croak("Too many arguments for is-a predicate"); |
387 | } |
388 | } |
389 | |
390 | sv = ST(0); |
391 | SvGETMAGIC(sv); |
392 | |
393 | ST(0) = boolSV( SvROK(sv) && SvOBJECT(SvRV(sv)) ); |
394 | XSRETURN(1); |
395 | } |
396 | |
397 | static void |
398 | setup_my_cxt(pTHX_ pMY_CXT){ |
399 | MY_CXT.universal_isa = gv_fetchpvs("UNIVERSAL::isa", GV_ADD, SVt_PVCV); |
400 | SvREFCNT_inc_simple_void_NN(MY_CXT.universal_isa); |
401 | } |
402 | |
403 | MODULE = Mouse::Util::TypeConstraints PACKAGE = Mouse::Util::TypeConstraints |
404 | |
646c0371 |
405 | PROTOTYPES: DISABLE |
406 | VERSIONCHECK: DISABLE |
1d5ecd5f |
407 | |
408 | BOOT: |
409 | { |
410 | MY_CXT_INIT; |
411 | setup_my_cxt(aTHX_ aMY_CXT); |
412 | } |
413 | |
414 | #ifdef USE_ITHREADS |
415 | |
416 | void |
417 | CLONE(...) |
418 | CODE: |
419 | { |
420 | MY_CXT_CLONE; |
421 | setup_my_cxt(aTHX_ aMY_CXT); |
422 | PERL_UNUSED_VAR(items); |
423 | } |
424 | |
425 | #endif /* !USE_ITHREADS */ |
426 | |
427 | void |
1d5ecd5f |
428 | Item(SV* sv = &PL_sv_undef) |
429 | ALIAS: |
430 | Any = MOUSE_TC_ANY |
431 | Item = MOUSE_TC_ITEM |
432 | Undef = MOUSE_TC_UNDEF |
433 | Defined = MOUSE_TC_DEFINED |
434 | Bool = MOUSE_TC_BOOL |
435 | Value = MOUSE_TC_VALUE |
436 | Ref = MOUSE_TC_REF |
437 | Str = MOUSE_TC_STR |
438 | Num = MOUSE_TC_NUM |
439 | Int = MOUSE_TC_INT |
440 | ScalarRef = MOUSE_TC_SCALAR_REF |
441 | ArrayRef = MOUSE_TC_ARRAY_REF |
442 | HashRef = MOUSE_TC_HASH_REF |
443 | CodeRef = MOUSE_TC_CODE_REF |
444 | GlobRef = MOUSE_TC_GLOB_REF |
445 | FileHandle = MOUSE_TC_FILEHANDLE |
446 | RegexpRef = MOUSE_TC_REGEXP_REF |
447 | Object = MOUSE_TC_OBJECT |
448 | ClassName = MOUSE_TC_CLASS_NAME |
449 | RoleName = MOUSE_TC_ROLE_NAME |
450 | CODE: |
451 | SvGETMAGIC(sv); |
452 | ST(0) = boolSV( mouse_builtin_tc_check(aTHX_ ix, sv) ); |
453 | XSRETURN(1); |
454 | |
455 | |