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source: cpp/frams/util/extvalue.cpp @ 455

Last change on this file since 455 was 414, checked in by Maciej Komosinski, 9 years ago
Don't print warnings on int (operator) float; the result gets promoted to float
Property svn:eol-style set to `native`
File size: 27.3 KB

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1	// This file is a part of Framsticks SDK. http://www.framsticks.com/
2	// Copyright (C) 1999-2015 Maciej Komosinski and Szymon Ulatowski.
3	// See LICENSE.txt for details.
4
5	#include "extvalue.h"
6	#include <frams/param/param.h>
7	#include "sstringutils.h"
8	#include <ctype.h>
9	#include <frams/vm/classes/collectionobj.h>
10	#include <frams/vm/classes/3dobject.h>
11	#include <frams/vm/classes/genoobj.h>
12	#include <common/nonstd_math.h>
13	#include <common/Convert.h>
14	#include <climits>
15	#include <errno.h>
16
17	#ifndef NO_BARRIER
18	#include <frams/simul/barrier.h>
19	#include <common/threads.h>
20	#endif
21
22	#ifdef MULTITHREADED
23	#include <pthread.h>
24	//this lock only protects against ref.counter corruption caused by concurrent reads.
25	//read/write conficts and nonatomicity are handled by BarrierObject (at least in theory ;-))
26	static pthread_mutex_t extobject_ref_lock = PTHREAD_MUTEX_INITIALIZER;
27	#define REF_LOCK pthread_mutex_lock(&extobject_ref_lock)
28	#define REF_UNLOCK pthread_mutex_unlock(&extobject_ref_lock)
29	#else
30	#define REF_LOCK
31	#define REF_UNLOCK
32	#endif
33
34	void ExtObject::incref() const
35	{
36	if (subtype & 1)
37	{
38	REF_LOCK;
39	dbobject->refcount++;
40	REF_UNLOCK;
41	}
42	}
43
44	void ExtObject::decref() const
45	{
46	if (subtype & 1)
47	{
48	REF_LOCK;
49	bool destroy = !--dbobject->refcount;
50	REF_UNLOCK;
51	//another thread can now access the object while we are deleting it
52	//but this is not a bug since we only guarantee read/read safety
53	if (destroy) delete dbobject;
54	}
55	}
56
57	bool ExtObject::operator==(const ExtObject& src) const
58	{
59	if (object != src.object) return false;
60	const char* n1 = interfaceName();
61	const char* n2 = src.interfaceName();
62	return (n1 == n2) \|\| (strcmp(n1, n2) == 0);
63	}
64
65	bool ExtObject::makeUnique()
66	{
67	if (!(subtype & 1)) return false;
68	if (dbobject->refcount == 1) return false;
69	VectorObject* v = VectorObject::fromObject(*this, false);
70	if (v)
71	{
72	VectorObject* n = new VectorObject;
73	n->data.setSize(n->data.size());
74	for (int i = 0; i < v->data.size(); i++)
75	{
76	ExtValue x = (ExtValue)v->data(i);
77	n->data.set(i, x ? new ExtValue(*x) : NULL);
78	}
79	operator=(n->makeObject());
80	return true;
81	}
82	return false;
83	}
84
85	void* ExtObject::getTarget(const char* classname, bool through_barrier, bool warn) const
86	{
87	if (!strcmp(interfaceName(), classname))
88	return getTarget();
89	#ifndef NO_BARRIER
90	if (through_barrier)
91	{
92	BarrierObject bo = BarrierObject::fromObject(this);
93	if (bo)
94	return bo->getSourceObject().getTarget(classname, true, warn);
95	}
96	#endif
97
98	if (warn)
99	{
100	logPrintf("ExtValue", "getObjectTarget", LOG_WARN, "%s object expected, %s found", classname, interfaceName());
101	}
102
103	return NULL;
104	}
105
106
107	SString ExtObject::toString() const
108	{
109	if (isEmpty()) return SString("null");
110	Param tmp_param;
111	ParamInterface *p = getParamInterface(tmp_param);
112	int tostr = p->findId("toString");
113	if (tostr >= 0)
114	{
115	return SString(p->getString(tostr));
116	}
117	else
118	{
119	SString tmp("<");
120	tmp += p->getName();
121	tmp += SString::sprintf(" object at %p>", object ? object : paraminterface);
122	return tmp;
123	}
124	}
125
126	THREAD_LOCAL_DEF(ExtObject::Serialization, ExtObject_serialization);
127
128	void ExtObject::Serialization::begin()
129	{
130	if (level == 0)
131	refs.clear();
132	level++;
133	}
134
135	int ExtObject::Serialization::add(const ExtObject &o)
136	{
137	if (o.isEmpty()) return -1;
138	for (int i = 0; i < (int)refs.size(); i++)
139	{
140	ExtObject& r = refs[i];
141	if (r == o) return i;
142	}
143	refs.push_back(o);
144	return -1;
145	}
146
147	void ExtObject::Serialization::replace(const ExtObject& o, const ExtObject& other)
148	{
149	if (o.isEmpty()) return;
150	for (int i = 0; i < (int)refs.size(); i++)
151	{
152	ExtObject& r = refs[i];
153	if (r == o)
154	{
155	r = other;
156	return;
157	}
158	}
159	}
160
161	void ExtObject::Serialization::remove(const ExtObject& o)
162	{
163	if (o.isEmpty()) return;
164	for (int i = 0; i < (int)refs.size(); i++)
165	{
166	ExtObject& r = refs[i];
167	if (o == r) refs.erase(refs.begin() + i);
168	}
169	}
170
171	const ExtObject* ExtObject::Serialization::get(int ref)
172	{
173	if (ref < 0) return NULL;
174	if (ref >= (int)refs.size()) return NULL;
175	return &refs[ref];
176	}
177
178	void ExtObject::Serialization::end()
179	{
180	level--;
181	if (level == 0)
182	refs.clear();
183	}
184
185	SString ExtObject::serialize_inner() const
186	{
187	int ref = tlsGetRef(ExtObject_serialization).add(*this);
188	if (ref >= 0)
189	return SString::sprintf("^%d", ref);
190
191	if (isEmpty()) return SString("null");
192	VectorObject vec = VectorObject::fromObject(this, false);
193	if (vec)
194	return vec->serialize();
195	DictionaryObject dic = DictionaryObject::fromObject(this, false);
196	if (dic)
197	return dic->serialize();
198	Param tmp_param;
199	ParamInterface *p = getParamInterface(tmp_param);
200	int m = p->findId("toVector");
201	if (m < 0)
202	m = p->findId("toDictionary");
203	if (m >= 0)
204	{
205	ExtObject o(p->getObject(m));
206	SString ret = SString(interfaceName()) + o.serialize();
207	return ret;
208	}
209	m = p->findId("toString");
210	if (m >= 0)
211	{
212	SString str = p->getString(m);
213	sstringQuote(str);
214	SString ret = SString(interfaceName()) + "\"" + str + "\"";
215	return ret;
216	}
217
218	tlsGetRef(ExtObject_serialization).remove(*this);//undo nonserializable reference
219	SString ret = interfaceName();
220	ret += SString::sprintf("<%p>", object ? object : paraminterface);
221	return ret;
222	}
223
224	SString ExtObject::serialize() const
225	{
226	tlsGetRef(ExtObject_serialization).begin();
227	SString ret = serialize_inner();
228	tlsGetRef(ExtObject_serialization).end();
229	return ret;
230	}
231
232	///////////////////////////////////////
233
234	SString ExtValue::typeDescription() const
235	{
236	switch (type)
237	{
238	case TInt: return SString("int");
239	case TDouble: return SString("float");
240	case TString: return SString("string");
241	case TUnknown: return SString("null");
242	case TInvalid: return SString("invalid");
243	case TObj: return getObject().isEmpty() ? SString("null") : SString(getObject().interfaceName());
244	}
245	return SString::empty();
246	}
247
248	SString ExtValue::typeAndValue() const
249	{
250	SString msg = typeDescription();
251	switch (type)
252	{
253	case TInt: case TDouble: case TString: case TObj:
254	msg += " '";
255	msg += getString();
256	msg += "'";
257	default:;
258	}
259	return msg;
260	}
261
262	void ExtValue::getObjectTarget(const char classname, bool warn) const
263	{
264	if (type != TObj)
265	{
266	if (warn)
267	{
268	SString tmp = getString();
269	if (tmp.len() > 30) tmp = tmp.substr(0, 30) + "...";
270	if (type == TString) tmp = SString("\"") + tmp + SString("\"");
271	logPrintf("ExtValue", "getObjectTarget", LOG_WARN, "%s object expected, %s found", classname, tmp.c_str());
272	}
273	return NULL;
274	}
275
276	return getObject().getTarget(classname, true, warn);
277	}
278
279	void ExtValue::set(const ExtValue& src)
280	{
281	switch (src.type)
282	{
283	case TString: sets(src.sdata()); break;
284	case TInt: seti(src.idata()); break;
285	case TDouble: setd(src.ddata()); break;
286	case TObj: seto(src.odata()); break;
287	default:type = src.type; break;
288	}
289	}
290
291	void ExtValue::setEmpty()
292	{
293	switch (type)
294	{
295	#ifdef EXTVALUEUNION
296	case TString: sdata().~SString(); break;
297	case TObj: odata().~ExtObject(); break;
298	#else
299	case TString: delete s; break;
300	case TObj: delete o; break;
301	#endif
302	default:;
303	}
304	type = TUnknown;
305	}
306
307	static ExtValue::CompareResult longsign(paInt x)
308	{
309	if (x < 0) return ExtValue::ResultLower;
310	if (x > 0) return ExtValue::ResultHigher;
311	return ExtValue::ResultEqual;
312	}
313
314	static ExtValue::CompareResult compareNull(const ExtValue& v)
315	{
316	if (v.isNull()) return ExtValue::ResultEqualUnordered;
317	if ((v.getType() == TInt) && (v.getInt() == 0)) return ExtValue::ResultUnequal_RelaxedEqual;
318	return ExtValue::ResultUnequal_RelaxedUnequal; //comparing anything else with null is valid but null is neither higher nor lower than numbers or strings
319	}
320
321	static ExtValue::CompareResult compareFloat(double a, double b)
322	{
323	double t = a - b;
324	if (t < 0) return ExtValue::ResultLower;
325	else if (t > 0) return ExtValue::ResultHigher;
326	return ExtValue::ResultEqual;
327	}
328
329	static ExtValue::CompareResult compareString(const SString &a, const SString &b)
330	{
331	const char* s1 = a.c_str();
332	const char* s2 = b.c_str();
333	return longsign(strcmp(s1, s2));
334	}
335
336	ExtValue::CompareResult ExtValue::compare(const ExtValue& src) const
337	{
338	if (isNull())
339	return compareNull(src);
340	else if (src.isNull())
341	return compareNull(*this);
342	switch (type)
343	{
344
345	case TInt:
346
347	if (src.getType() == TInt)
348	{
349	paInt t = src.getInt();
350	if (idata() > 0)
351	{
352	if (t > 0) return longsign(idata() - t); else return ResultHigher;
353	}
354	else
355	{
356	if (t <= 0) return longsign(idata() - t); else return ResultLower;
357	}
358	}
359	else if (src.getType() == TDouble)
360	return compareFloat((double)idata(), src.getDouble());
361	else
362	return ResultMismatch;//comparing numbers with other things is invalid
363	break;
364
365	case TDouble:
366	if ((src.getType() == TDouble) \|\| (src.getType() == TInt))
367	return compareFloat(getDouble(), src.getDouble());
368	else
369	return ResultMismatch;
370	break;
371
372	case TString:
373	if (src.getType() == TString)
374	return compareString(sdata(), src.getString());
375	else
376	return ResultMismatch;
377	break;
378
379	case TObj:
380	{
381	if (src.type == TObj)
382	return odata() == src.odata() ? ResultEqualUnordered : ResultUnequal_RelaxedUnequal;
383	if ((src.type == TInt) && (src.getInt() == 0))
384	return ResultMismatch_RelaxedUnequal;
385	return ResultMismatch;
386	}
387	default:;
388	}
389	return ResultMismatch;
390	}
391
392	const char* ExtValue::cmp_op_names[] = { "==", "!=", ">=", "<=", ">", "<", "~=", "!~", NULL };
393
394	int ExtValue::interpretCompare(CmpOperator op, CompareResult result, CmpContext *context)
395	{
396	CompareResult error_threshold = ResultUnequal_RelaxedEqual;//error when ResultUnequal_RelaxedEqual or higher (not comparable)
397	int ret = 0;
398	switch (op)
399	{
400	case CmpEQ: ret = (result == ResultEqual) \|\| (result == ResultEqualUnordered); error_threshold = ResultMismatch_RelaxedUnequal; break;
401	case CmpNE: ret = !((result == ResultEqual) \|\| (result == ResultEqualUnordered)); error_threshold = ResultMismatch_RelaxedUnequal; break;
402	case CmpGT: ret = (result == ResultHigher); error_threshold = ResultEqualUnordered; break;
403	case CmpGE: ret = (result == ResultEqual) \|\| (result == ResultHigher); error_threshold = ResultEqualUnordered; break;
404	case CmpLT: ret = (result == ResultLower); error_threshold = ResultEqualUnordered; break;
405	case CmpLE: ret = (result == ResultEqual) \|\| (result == ResultLower); error_threshold = ResultEqualUnordered; break;
406	case CmpREQ: ret = (result == ResultEqual) \|\| (result == ResultEqualUnordered) \|\| (result == ResultUnequal_RelaxedEqual); error_threshold = ResultMismatch; break;
407	case CmpRNE: ret = !((result == ResultEqual) \|\| (result == ResultEqualUnordered) \|\| (result == ResultUnequal_RelaxedEqual)); error_threshold = ResultMismatch; break;
408	default:;
409	}
410	if (result >= error_threshold)
411	{
412	SString msg = "Type mismatch while comparing";
413	if (context)
414	{
415	if (context->v1 && context->v2)
416	msg += SString::sprintf(": %s %s %s",
417	context->v1->typeAndValue().c_str(),
418	cmp_op_names[op - CmpFIRST],
419	context->v2->typeAndValue().c_str());
420	}
421	logPrintf("ExtValue", "interpretCompare", LOG_ERROR, "%s", msg.c_str());
422	ret = -1;
423	}
424	return ret;
425	}
426
427	int ExtValue::operator==(const ExtValue& src) const
428	{
429	if (type != src.type) return 0;
430	switch (type)
431	{
432	case TInt: return idata() == src.idata();
433	case TDouble: return ddata() == src.ddata();
434	case TString: return sdata() == src.sdata();
435	case TObj: return odata() == src.odata();
436	default:;
437	}
438	return 1;
439	}
440
441	void ExtValue::operator+=(const ExtValue& src)
442	{
443	// return = ok, break = fail
444	switch (type)
445	{
446	case TInt:
447	switch (src.getType())
448	{
449	case TDouble:
450	setDouble(double(getInt()) + src.getDouble());
451	return;
452	case TString:
453	break;
454	default:
455	idata() += src.getInt();
456	return;
457	}
458	break;
459	case TDouble:
460	switch (src.getType())
461	{
462	case TString:
463	break;
464	default:
465	ddata() += src.getDouble();
466	return;
467	}
468	break;
469	case TString: sdata() += src.getString(); return;
470	case TObj:
471	{
472	VectorObject *vec = VectorObject::fromObject(getObject(), false);
473	VectorObject *vec2 = VectorObject::fromObject(src.getObject(), false);
474	if (vec && vec2)
475	{
476	for (int i = 0; i < vec2->data.size(); i++)
477	{
478	ExtValue s = (ExtValue)vec2->data(i);
479	ExtValue d = s ? new ExtValue(s) : NULL;
480	vec->data += d;
481	}
482	return;
483	}
484	}
485	//NO break;
486	default:;
487	}
488	logPrintf("ExtValue", "add", LOG_ERROR, "Can't add %s to %s", src.typeAndValue().c_str(), typeAndValue().c_str());
489	}
490
491	void ExtValue::operator-=(const ExtValue& src)
492	{
493	// return = ok, break = fail
494	switch (type)
495	{
496	case TInt:
497	switch (src.getType())
498	{
499	case TInt:
500	idata() -= src.getInt();
501	return;
502	case TDouble:
503	setDouble(double(getInt()) - src.getDouble());
504	return;
505	default:;
506	}
507	break;
508	case TDouble:
509	switch (src.getType())
510	{
511	case TDouble:
512	case TInt:
513	ddata() -= src.getDouble();
514	return;
515	default:;
516	}
517	break;
518	default:;
519	}
520	logPrintf("ExtValue", "subtract", LOG_ERROR, "Can't subtract %s from %s", src.typeAndValue().c_str(), typeAndValue().c_str());
521	}
522
523	void ExtValue::operator*=(const ExtValue& src)
524	{
525	// return = ok, break = fail
526	switch (type)
527	{
528	case TInt:
529	switch (src.getType())
530	{
531	case TInt:
532	idata() *= src.getInt();
533	return;
534	case TDouble:
535	setDouble(double(getInt())*src.getDouble());
536	return;
537	default:;
538	}
539	break;
540	case TDouble:
541	switch (src.getType())
542	{
543	case TInt:
544	case TDouble:
545	ddata() *= src.getDouble();
546	return;
547	default:;
548	}
549	break;
550	case TString:
551	switch (src.getType())
552	{
553	case TInt: case TDouble:
554	{
555	SString t;
556	for (int n = src.getInt(); n > 0; n--)
557	t += getString();
558	setString(t);
559	return;
560	}
561	default:;
562	}
563	break;
564	case TObj:
565	{
566	VectorObject *vec = VectorObject::fromObject(getObject(), false);
567	if (vec)
568	{
569	int n = src.getInt();
570	int orig_size = vec->data.size();
571	if (n <= 0)
572	{
573	vec->clear(); return;
574	}
575	for (; n > 1; n--)
576	{
577	for (int i = 0; i < orig_size; i++)
578	{
579	ExtValue s = (ExtValue)vec->data(i);
580	ExtValue d = s ? new ExtValue(s) : NULL;
581	vec->data += d;
582	}
583	}
584	return;
585	}
586	}
587	//NO break;
588	default:;
589	}
590	logPrintf("ExtValue", "multiply", LOG_WARN, "Can't multiply %s by %s", typeAndValue().c_str(), src.typeAndValue().c_str());
591	}
592
593	/*#include "fpu_control.h"
594	#include <signal.h>
595
596	static int fpuexception;
597	void mathhandler(int sig)
598	{
599	printf("fpu exception!\n");
600	fpuexception=1;
601	signal(SIGFPE,SIG_IGN);
602	} */
603
604	void ExtValue::divInt(paInt a)
605	{
606	if (a)
607	idata() /= a;
608	else
609	{
610	logPrintf("ExtValue", "divide", LOG_CRITICAL, "Division by zero: %d/0", idata());
611	setInvalid();
612	}
613	}
614
615	void ExtValue::divDouble(double a)
616	{
617	if (a == 0.0)
618	{
619	logPrintf("ExtValue", "divide", LOG_CRITICAL, "Division by zero: %s/0.0", getString().c_str());
620	setInvalid();
621	}
622	else
623	{
624	fpExceptDisable();
625	double tmp = getDouble() / a;
626	if (!finite(tmp))
627	{
628	logPrintf("ExtValue", "divide", LOG_CRITICAL, "Overflow %s/%g", getString().c_str(), a); setInvalid();
629	}
630	else
631	setDouble(tmp);
632	// niby dobrze ale lepiej byloby to robic bardziej systematycznie a nie tylko w dzieleniu?
633	//if (isnan(ddata())) //http://www.digitalmars.com/d/archives/c++/Traping_divide_by_zero_5728.html
634	// { logPrintf("ExtValue","divide",LOG_ERROR,"not-a-number",(const char*)getString()); setInvalid(); }
635	fpExceptEnable();
636	}
637	}
638
639	void ExtValue::operator/=(const ExtValue& src)
640	{
641	switch (type)
642	{
643	case TInt:
644	switch (src.getType())
645	{
646	case TInt:
647	divInt(src.idata());
648	return;
649	case TDouble:
650	divDouble(src.ddata());
651	return;
652	default:;
653	}
654	break;
655
656	case TDouble:
657	switch (src.getType())
658	{
659	case TInt:
660	divDouble(src.getDouble());
661	return;
662	case TDouble:
663	divDouble(src.ddata());
664	return;
665	default:;
666	}
667	break;
668
669	default:;
670	}
671	logPrintf("ExtValue", "divide", LOG_ERROR, "Can't divide %s by %s", typeAndValue().c_str(), src.typeAndValue().c_str());
672	}
673
674	SString ExtValue::format(SString& fmt, const ExtValue **values, int count)
675	{
676	SString ret;
677	// "..........%.........%..........%........"
678	// ^_cur ^_next
679	// ^^^^^^^^^^___sub
680	//
681	// "..........%.........%..........%........"
682	// ^-cur ^-next
683	// ^^^^^^^^^^___sub
684	const char* begin = fmt.c_str(), end = begin + fmt.len(), curr = begin;
685	int type = 0;
686
687	class Args
688	{
689	const ExtValue **values;
690	int count;
691	int arg;
692	public:
693	Args(const ExtValue **v, int c) :values(v), count(c), arg(0) {}
694	bool finished() { return arg >= count; }
695	const ExtValue getNext() { const ExtValue ret = NULL; if ((arg < count) && values[arg]) ret = values[arg]; arg++; return ret; }
696	};
697	Args args(values, count);
698
699	while (curr < end)
700	{
701	const char* next = strchr(curr, '%');
702	if (!next) next = end; else if ((next == curr) && (curr > begin))
703	{
704	next = strchr(next + 1, '%'); if (!next) next = end;
705	}
706	type = 0;
707	if (curr > begin)
708	{
709	type = 0;
710	for (const char* t = curr; t < next; t++)
711	switch (*t)
712	{
713	case 'd': case 'x': case 'X': case 'u': case 'p': case 'c': type = 'd'; t = next; break;
714	case 'f': case 'g': case 'e': type = 'f'; t = next; break;
715	case 's': type = 's'; t = next; break;
716	case 't': case 'T': type = *t; t = next; break;
717	case '%': if (t > begin) { type = *t; t = next; } break;
718	}
719	}
720	if (curr > begin) curr--;
721	const ExtValue *a;
722	if (args.finished() && (type != 0) && (type != '%'))
723	{
724	ret += fmt.substr((int)(curr - begin));
725	break;
726	}
727	SString sub = fmt.substr((int)(curr - begin), (int)(next - curr));
728	switch (type)
729	{
730	case 'd': a = args.getNext(); ret += SString::sprintf(sub.c_str(), a ? a->getInt() : 0); break;
731	case 'f': a = args.getNext(); ret += SString::sprintf(sub.c_str(), a ? a->getDouble() : 0); break;
732	case 's': {a = args.getNext(); SString tmp; if (a) tmp = a->getString(); ret += SString::sprintf(sub.c_str(), tmp.c_str()); } break;
733	case 't': case 'T':
734	{
735	a = args.getNext();
736	time_t ti = a ? a->getInt() : 0;
737	struct tm tm = Convert::localtime(ti);
738	SString timtxt;
739	if (type == 'T')
740	timtxt = SString::sprintf("%04d-%02d-%02d %02d:%02d:%02d", 1900 + tm.tm_year, 1 + tm.tm_mon, tm.tm_mday, tm.tm_hour, tm.tm_min, tm.tm_sec);
741	else
742	timtxt = Convert::asctime(tm).c_str();
743	ret += timtxt;
744	ret += sub.substr(2);
745	}
746	break;
747	case '%': ret += '%'; ret += sub.substr(2); break;
748	case 0: ret += sub; break;
749	}
750	curr = next + 1;
751	}
752	return ret;
753	}
754
755
756	void ExtValue::operator%=(const ExtValue& src)
757	{
758	switch (type)
759	{
760	case TInt: idata() = idata() % src.getInt(); break;
761	case TDouble: ddata() = fmod(ddata(), src.getDouble()); break;
762
763	case TString:
764	{
765	VectorObject *vec = VectorObject::fromObject(src.getObject(), false);
766	if (vec)
767	sdata() = format(sdata(), (const ExtValue**)&vec->data.getref(0), vec->data.size());
768	else
769	{
770	const ExtValue *ptr = &src; sdata() = ExtValue::format(sdata(), &ptr, 1);
771	}
772	}
773	break;
774
775	case TObj: case TUnknown: case TInvalid:
776	logPrintf("ExtValue", "modulo", LOG_WARN, "Can't apply modulo to %s", typeDescription().c_str());
777
778	default:;
779	}
780	}
781
782	bool ExtValue::parseInt(const char* s, paInt &result, bool strict, bool error)
783	{
784	ExtValue tmp;
785	const char* after = tmp.parseNumber(s, strict ? TInt : TUnknown);
786	if ((after == NULL) \|\| (after[0] != 0))
787	{
788	if (error)
789	logPrintf("ExtValue", "parseInt", LOG_ERROR, "Could not parse '%s'%s", s, strict ? " (strict)" : "");
790	return false;
791	}
792	result = tmp.getInt();
793	return true;
794	}
795
796	bool ExtValue::parseDouble(const char* s, double &result, bool error)
797	{
798	ExtValue tmp;
799	const char* after = tmp.parseNumber(s, TDouble);
800	if ((after == NULL) \|\| (after[0] != 0))
801	{
802	if (error)
803	logPrintf("ExtValue", "parseDouble", LOG_ERROR, "Could not parse '%s'", s);
804	return false;
805	}
806	result = tmp.getDouble();
807	return true;
808	}
809
810	paInt ExtValue::getInt(const char* s, bool strict)
811	{
812	paInt result;
813	if (parseInt(s, result, strict, true))
814	return result;
815	return 0;
816	}
817
818	double ExtValue::getDouble(const char* s)
819	{
820	double result;
821	if (parseDouble(s, result, true))
822	return result;
823	return 0;
824	}
825
826	paInt ExtValue::getInt() const
827	{
828	switch (type)
829	{
830	case TInt: return idata();
831	case TDouble: return (int)ddata();
832	case TString: return getInt(sdata().c_str());
833	case TObj:
834	logPrintf("ExtValue", "getInt", LOG_WARN, "Getting integer value from object reference (%s)", getString().c_str());
835	return (paInt)(intptr_t)odata().param;
836	default:;
837	}
838	return 0;
839	}
840
841	double ExtValue::getDouble() const
842	{
843	switch (type)
844	{
845	case TDouble: return ddata();
846	case TInt: return (double)idata();
847	case TString: return getDouble(sdata().c_str());
848	case TObj:
849	logPrintf("ExtValue", "getDouble", LOG_WARN, "Getting floating point value from object reference (%s)", getString().c_str());
850	return (double)(intptr_t)odata().param;
851	default:;
852	}
853	return 0.0;
854	}
855
856	SString ExtValue::getString() const
857	{
858	switch (type)
859	{
860	case TString: return sdata();
861	case TInt: return SString::valueOf(idata());
862	case TDouble: return SString::valueOf(ddata());
863	case TObj: return odata().toString();
864	case TInvalid: return SString("invalid");
865	default: return SString("null");
866	}
867	}
868
869	const SString* ExtValue::getStringPtr() const
870	{
871	if (type == TString)
872	return &sdata();
873	return NULL;
874	}
875
876	SString ExtValue::serialize() const
877	{
878	switch (type)
879	{
880	case TString:
881	{
882	SString q = sdata();
883	sstringQuote(q);
884	return SString("\"") + q + SString("\"");
885	}
886	case TInt:
887	return SString::valueOf(idata());
888	case TDouble:
889	return SString::valueOf(ddata());
890	case TObj:
891	return odata().serialize();
892	case TInvalid:
893	return SString("invalid");
894	default:
895	return SString("null");
896	}
897	}
898
899	/// returns the first character after the parsed number, or NULL if not a number
900	/// @param strict_type = restrict the allowed return value (TUnknown = unrestricted)
901	const char* ExtValue::parseNumber(const char* in, ExtPType strict_type)
902	{
903	char* after;
904	if (in == NULL) return NULL;
905	if (in[0] == 0) return NULL;
906	while (isspace(*in)) in++;
907	bool minus = (in[0] == '-');
908	bool plus = (in[0] == '+');
909	if (((in[0] == '0') && ((in[1] == 'x') \|\| (in[1] == 'X')))
910	\|\| (((minus \|\| plus) && (in[1] == '0') && ((in[2] == 'x') \|\| (in[2] == 'X')))))
911	{
912	in += (minus \|\| plus) ? 3 : 2;
913	if (isspace(*in)) return NULL;
914	errno = 0;
915	unsigned long intvalue = strtoul(in, &after, 16);
916	if ((after > in) && (errno == 0) && (intvalue <= 0xffffffff))
917	{
918	if (strict_type == TDouble)
919	setDouble(minus ? -(double)intvalue : (double)intvalue);
920	else
921	setInt(minus ? -intvalue : intvalue);
922	return after;
923	}
924	else
925	return NULL;
926	}
927
928	errno = 0;
929	double fpvalue = strtod(in, &after);
930	if ((after > in) && (errno == 0))
931	{
932	if (strict_type != TDouble)
933	{
934	if ((memchr(in, '.', after - in) == NULL) && (memchr(in, 'e', after - in) == NULL) && (memchr(in, 'E', after - in) == NULL) // no "special" characters
935	&& (fpvalue == floor(fpvalue)) // value is integer
936	&& (fpvalue >= INT_MIN) && (fpvalue <= INT_MAX)) // within limits
937	{
938	setInt(fpvalue);
939	return after;
940	}
941	else if (strict_type == TInt)
942	return NULL;
943	}
944	setDouble(fpvalue);
945	return after;
946	}
947	return NULL;
948	}
949
950	PtrListTempl<ParamInterface*> &ExtValue::getDeserializableClasses()
951	{
952	static PtrListTempl<ParamInterface*> classes;
953	return classes;
954	}
955
956	ParamInterface ExtValue::findDeserializableClass(const char name)
957	{
958	FOREACH(ParamInterface*, cls, getDeserializableClasses())
959	if (!strcmp(cls->getName(), name))
960	return cls;
961	return NULL;
962	}
963
964	static const char* skipWord(const char* in)
965	{
966	while (isalpha(in) \|\| (in == '_'))
967	in++;
968	return in;
969	}
970
971	//returns the first character after the parsed portion or NULL if invalid format
972	const char* ExtValue::deserialize_inner(const char* in)
973	{
974	const char* ret = parseNumber(in);
975	if (ret)
976	return ret;
977	else if (*in == '\"')
978	{
979	ret = skipQuoteString(in + 1, NULL);
980	SString s(in + 1, (int)(ret - (in + 1)));
981	sstringUnquote(s);
982	setString(s);
983	if (*ret == '\"')
984	return ret + 1;
985	else
986	{
987	logPrintf("ExtValue", "deserialize", LOG_ERROR, "Missing '\"' in string: '%s'", ret);
988	return NULL;
989	}
990	}
991	else if (*in == '[')
992	{
993	VectorObject *vec = new VectorObject;
994	ExtObject o(&VectorObject::par, vec);
995	tlsGetRef(ExtObject_serialization).add(o);
996	const char* p = in + 1;
997	ExtValue tmp;
998	while (*p)
999	{
1000	if (*p == ']') { p++; break; }
1001	ret = tmp.deserialize(p);
1002	if (ret)
1003	{
1004	vec->data += new ExtValue(tmp);
1005	p = ret;
1006	if (*p == ',') p++;
1007	else if (*p != ']')
1008	{
1009	logPrintf("ExtValue", "deserialize", LOG_ERROR, "Missing ',' in Vector: '%s'", p);
1010	return NULL;
1011	}
1012	}
1013	else
1014	{
1015	p = NULL;
1016	break;
1017	}
1018	}
1019	setObject(o);
1020	return p;
1021	}
1022	else if (*in == '{')
1023	{
1024	DictionaryObject *dic = new DictionaryObject;
1025	ExtObject o(&DictionaryObject::par, dic);
1026	tlsGetRef(ExtObject_serialization).add(o);
1027	const char* p = in + 1;
1028	ExtValue args[2]/={value,key}/, dummy_ret;
1029	while (*p)
1030	{
1031	if (*p == '}') { p++; break; }
1032	ret = args[1].deserialize(p);
1033	if ((!ret) \|\| (args[1].getType() != TString)) { p = NULL; break; }
1034	p = ret;
1035	if (*p != ':') { logPrintf("ExtValue", "deserialize", LOG_ERROR, "Missing ':' in Dictionary: '%s'", p); p = NULL; break; }
1036	p++;
1037	ret = args[0].deserialize(p);
1038	if (!ret) { p = NULL; break; }
1039	p = ret;
1040	dic->p_set(args, &dummy_ret);
1041	if (*p == ',') p++;
1042	else if (*p != '}')
1043	{
1044	logPrintf("ExtValue", "deserialize", LOG_ERROR, "Missing ',' in Dictionary: '%s'", p);
1045	return NULL;
1046	}
1047	}
1048	setObject(o);
1049	return p;
1050	}
1051	else if (!strncmp(in, "null", 4))
1052	{
1053	setEmpty();
1054	return in + 4;
1055	}
1056	else if (!strncmp(in, "invalid", 9))
1057	{
1058	setInvalid();
1059	return in + 9;
1060	}
1061	else if (*in == '<')
1062	{ //unserializable object
1063	setInvalid();
1064	while (*in)
1065	if (*in == '>')
1066	return in + 1;
1067	else in++;
1068	return in;
1069	}
1070	else if (*in == '^')
1071	{
1072	in++;
1073	ExtValue ref;
1074	ret = ref.parseNumber(in, TInt);
1075	if (ret && (ref.getType() == TInt))
1076	{
1077	const ExtObject* o = tlsGetRef(ExtObject_serialization).get(ref.getInt());
1078	if (o)
1079	{
1080	setObject(*o);
1081	return ret;
1082	}
1083	}
1084	logPrintf("ExtValue", "deserialize", LOG_ERROR, "Invalid reference: '%s'", in - 1);
1085	return NULL;
1086	}
1087	else if ((ret = skipWord(in)) && (ret != in))
1088	{
1089	SString clsname(in, (int)(ret - in));
1090	ExtValue tmp;
1091	ret = tmp.deserialize(ret);
1092	ParamInterface *cls = findDeserializableClass(clsname.c_str());
1093	if (cls && (tmp.getType() != TUnknown) && (tmp.getType() != TInvalid))
1094	{
1095	VectorObject *vec = VectorObject::fromObject(tmp.getObject(), false);
1096	if (vec)
1097	{
1098	int m = cls->findId("newFromVector");
1099	if (m >= 0)
1100	{
1101	cls->call(m, &tmp, this);
1102	tlsGetRef(ExtObject_serialization).replace(tmp.getObject(), getObject());
1103	return ret;
1104	}
1105	}
1106	DictionaryObject *dic = DictionaryObject::fromObject(tmp.getObject(), false);
1107	if (dic)
1108	{
1109	int m = cls->findId("newFromDictionary");
1110	if (m >= 0)
1111	{
1112	cls->call(m, &tmp, this);
1113	tlsGetRef(ExtObject_serialization).replace(tmp.getObject(), getObject());
1114	return ret;
1115	}
1116	}
1117	if (tmp.getType() == TString)
1118	{
1119	int m = cls->findId("newFromString");
1120	if (m >= 0)
1121	{
1122	cls->call(m, &tmp, this);
1123	tlsGetRef(ExtObject_serialization).replace(tmp.getObject(), getObject());
1124	return ret;
1125	}
1126	}
1127	tlsGetRef(ExtObject_serialization).remove(tmp.getObject());
1128	setEmpty();
1129	}
1130	setEmpty();
1131	logPrintf("ExtValue", "deserialize", LOG_WARN, "object of class \"%s\" could not be deserialized", clsname.c_str());
1132	return ret;
1133	}
1134	logPrintf("ExtValue", "deserialize", LOG_ERROR, "Bad syntax: '%s'", in);
1135	setEmpty();
1136	return NULL;
1137	}
1138
1139	const char* ExtValue::deserialize(const char* in)
1140	{
1141	tlsGetRef(ExtObject_serialization).begin();
1142	const char* ret = deserialize_inner(in);
1143	tlsGetRef(ExtObject_serialization).end();
1144	return ret;
1145	}
1146
1147	ExtObject ExtValue::getObject() const
1148	{
1149	if (type == TObj) return odata();
1150	return ExtObject();
1151	}
1152
1153	ExtValue ExtValue::getExtType()
1154	{
1155	static const char* typenames[] = { "null", "int", "float", "string", "", "invalid" };
1156	if (getType() != TObj)
1157	return ExtValue(typenames[(int)getType()]);
1158	ExtObject& o = odata();
1159	return ExtValue(SString(o.isEmpty() ? "" : o.interfaceName()));
1160	}
1161
1162	SString SString::valueOf(const ExtValue& v)
1163	{
1164	return v.getString();
1165	}
1166	SString SString::valueOf(const ExtObject& v)
1167	{
1168	return v.toString();
1169	}

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