Annotation of parser3/src/classes/op.C, revision 1.81
1.1 paf 1: /** @file
1.9 paf 2: Parser: parser @b operators.
1.1 paf 3:
1.70 paf 4: Copyright (c) 2001, 2002 ArtLebedev Group (http://www.artlebedev.com)
1.71 paf 5: Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)
1.1 paf 6:
1.81 ! paf 7: $Id: op.C,v 1.80 2002/03/29 11:28:40 paf Exp $
1.1 paf 8: */
9:
1.13 paf 10: #include "classes.h"
1.1 paf 11: #include "pa_common.h"
12: #include "pa_request.h"
13: #include "pa_vint.h"
14: #include "pa_sql_connection.h"
1.79 paf 15: #include "pa_vdate.h"
1.1 paf 16:
1.18 parser 17: // limits
18:
19: #define MAX_LOOPS 10000
20:
1.10 paf 21: // defines
22:
23: #define OP_CLASS_NAME "OP"
1.11 paf 24:
1.10 paf 25: // class
26:
27: class MOP : public Methoded {
28: public:
29: MOP(Pool& pool);
1.11 paf 30: public: // Methoded
1.10 paf 31: bool used_directly() { return true; }
1.11 paf 32: void configure_user(Request& r);
1.36 parser 33:
1.11 paf 34: private:
35: String main_sql_name;
36: String main_sql_drivers_name;
1.10 paf 37: };
38:
39: // methods
40:
1.5 paf 41: static void _if(Request& r, const String&, MethodParams *params) {
1.48 parser 42: Value& condition_code=params->as_junction(0, "condition must be expression");
1.1 paf 43:
1.81 ! paf 44: bool condition=r.process_to_value(condition_code,
1.1 paf 45: 0/*no name*/,
46: false/*don't intercept string*/).as_bool();
1.6 paf 47: if(condition)
1.81 ! paf 48: r.write_pass_lang(r.process_to_value(params->as_junction(1, "'then' parameter must be code")));
1.50 parser 49: else if(params->size()>2)
1.81 ! paf 50: r.write_pass_lang(r.process_to_value(params->as_junction(2, "'else' parameter must be code")));
1.1 paf 51: }
52:
1.5 paf 53: static void _untaint(Request& r, const String& method_name, MethodParams *params) {
1.1 paf 54: Pool& pool=r.pool();
55:
1.60 paf 56: uchar lang;
1.59 paf 57: if(params->size()==1)
58: lang=String::UL_AS_IS; // mark as simply 'tainted'. useful in html from sql
59: else {
60: const String& lang_name=params->as_string(0, "lang must be string");
1.60 paf 61: lang=untaint_lang_name2enum->get_int(lang_name);
1.59 paf 62: if(!lang)
1.78 paf 63: throw Exception(0,
1.59 paf 64: &lang_name,
65: "invalid taint language");
66: }
1.1 paf 67:
68: {
1.59 paf 69: Value& vbody=params->as_junction(params->size()-1, "body must be code");
1.1 paf 70:
71: Temp_lang temp_lang(r, lang); // set temporarily specified ^untaint[language;
1.81 ! paf 72: r.write_pass_lang(r.process_to_value(vbody)); // process marking tainted with that lang
1.1 paf 73: }
74: }
75:
1.5 paf 76: static void _taint(Request& r, const String&, MethodParams *params) {
1.1 paf 77: Pool& pool=r.pool();
78:
1.60 paf 79: uchar lang;
1.1 paf 80: if(params->size()==1)
81: lang=String::UL_TAINTED; // mark as simply 'tainted'. useful in table:set
82: else {
1.48 parser 83: const String& lang_name=params->as_string(0, "lang must be string");
1.60 paf 84: lang=untaint_lang_name2enum->get_int(lang_name);
1.1 paf 85: if(!lang)
1.78 paf 86: throw Exception(0,
1.3 paf 87: &lang_name,
88: "invalid taint language");
1.1 paf 89: }
90:
91: {
1.34 parser 92: Value& vbody=params->as_no_junction(params->size()-1, "body must not be code");
1.1 paf 93:
94: String result(r.pool());
95: result.append(
96: vbody.as_string(), // process marking tainted with that lang
97: lang, true); // force result language to specified
98: r.write_pass_lang(result);
99: }
100: }
101:
1.5 paf 102: static void _process(Request& r, const String& method_name, MethodParams *params) {
1.1 paf 103: // calculate pseudo file name of processed chars
104: // would be something like "/some/file(4) process"
105: char place[MAX_STRING];
106: #ifndef NO_STRING_ORIGIN
107: const Origin& origin=method_name.origin();
108: snprintf(place, MAX_STRING, "%s(%d) %s",
109: origin.file, 1+origin.line,
110: method_name.cstr());
111: #else
1.39 parser 112: strncpy(place, method_name.cstr(), MAX_STRING-1); place[MAX_STRING-1]=0;
1.1 paf 113: #endif
114:
115: VStateless_class& self_class=*r.self->get_class();
1.73 paf 116: const Method *main_method;
1.1 paf 117: {
1.73 paf 118: // temporary remove language change
119: Temp_lang temp_lang(r, String::UL_PASS_APPENDED);
1.1 paf 120: // temporary zero @main so to maybe-replace it in processed code
121: Temp_method temp_method_main(self_class, *main_method_name, 0);
122: // temporary zero @auto so it wouldn't be auto-called in Request::use_buf
123: Temp_method temp_method_auto(self_class, *auto_method_name, 0);
124:
125: // evaluate source to process
126: const String& source=
1.81 ! paf 127: r.process_to_string(params->as_junction(0, "body must be code"));
1.1 paf 128:
129: // process source code, append processed methods to 'self' class
130: // maybe-define new @main
1.67 paf 131: r.use_buf(
132: source.cstr(String::UL_UNSPECIFIED, r.connection(0)),
133: place,
134: &self_class);
1.1 paf 135:
1.73 paf 136: // main_method
137: main_method=self_class.get_method(*main_method_name);
138: }
139: // after restoring current-request-lang
140: // maybe-execute @main[]
141: if(main_method) {
142: // execute!
143: r.execute(*main_method->parser_code);
1.1 paf 144: }
145: }
146:
1.5 paf 147: static void _rem(Request& r, const String&, MethodParams *params) {
1.34 parser 148: params->as_junction(0, "body must be code");
1.1 paf 149: }
150:
1.5 paf 151: static void _while(Request& r, const String& method_name, MethodParams *params) {
1.1 paf 152: Pool& pool=r.pool();
153:
1.34 parser 154: Value& vcondition=params->as_junction(0, "condition must be expression");
155: Value& body=params->as_junction(1, "body must be code");
1.1 paf 156:
157: // while...
158: int endless_loop_count=0;
159: while(true) {
1.18 parser 160: if(++endless_loop_count>=MAX_LOOPS) // endless loop?
1.78 paf 161: throw Exception("parser.runtime",
1.1 paf 162: &method_name,
163: "endless loop detected");
164:
165: bool condition=
1.81 ! paf 166: r.process_to_value(
1.1 paf 167: vcondition,
168: 0/*no name*/,
169: false/*don't intercept string*/).as_bool();
170: if(!condition) // ...condition is true
171: break;
172:
173: // write processed body
1.81 ! paf 174: r.write_pass_lang(r.process_to_value(body));
1.1 paf 175: }
176: }
177:
1.5 paf 178: static void _use(Request& r, const String& method_name, MethodParams *params) {
1.34 parser 179: Value& vfile=params->as_no_junction(0, "file name must not be code");
1.37 parser 180: r.use_file(vfile.as_string());
1.1 paf 181: }
182:
1.5 paf 183: static void _for(Request& r, const String& method_name, MethodParams *params) {
1.1 paf 184: Pool& pool=r.pool();
1.48 parser 185: const String& var_name=params->as_string(0, "var name must be string");
186: int from=params->as_int(1, "from must be int", r);
187: int to=params->as_int(2, "to must be int", r);
1.34 parser 188: Value& body_code=params->as_junction(3, "body must be code");
1.50 parser 189: Value *delim_maybe_code=params->size()>4?¶ms->get(4):0;
1.1 paf 190:
1.57 paf 191: if(to-from>=MAX_LOOPS) // too long loop?
1.78 paf 192: throw Exception("parser.runtime",
1.57 paf 193: &method_name,
194: "endless loop detected");
195:
1.1 paf 196: bool need_delim=false;
197: VInt *vint=new(pool) VInt(pool, 0);
198: for(int i=from; i<=to; i++) {
199: vint->set_int(i);
1.56 paf 200: r.root->put_element(var_name, vint);
1.1 paf 201:
1.81 ! paf 202: Value& processed_body=r.process_to_value(body_code);
1.49 parser 203: if(delim_maybe_code) { // delimiter set?
1.1 paf 204: const String *string=processed_body.get_string();
205: if(need_delim && string && string->size()) // need delim & iteration produced string?
1.81 ! paf 206: r.write_pass_lang(r.process_to_string(*delim_maybe_code));
1.1 paf 207: need_delim=true;
208: }
209: r.write_pass_lang(processed_body);
210: }
211: }
212:
1.15 paf 213: static void _eval(Request& r, const String& method_name, MethodParams *params) {
1.34 parser 214: Value& expr=params->as_junction(0, "need expression");
1.1 paf 215: // evaluate expresion
1.81 ! paf 216: Value *result=r.process_to_value(expr,
1.16 paf 217: 0/*no name YET*/,
1.1 paf 218: true/*don't intercept string*/).as_expr_result();
1.50 parser 219: if(params->size()>1) {
1.34 parser 220: Value& fmt=params->as_no_junction(1, "fmt must not be code");
1.1 paf 221:
222: Pool& pool=r.pool();
223: String& string=*new(pool) String(pool);
224: string.APPEND_CONST(format(pool, result->as_double(), fmt.as_string().cstr()));
225: result=new(pool) VString(string);
226: }
1.16 paf 227: result->set_name(method_name);
1.1 paf 228: r.write_no_lang(*result);
229: }
230:
1.42 parser 231: static void _connect(Request& r, const String& method_name, MethodParams *params) {
1.1 paf 232: Pool& pool=r.pool();
1.63 paf 233: #ifdef RESOURCES_DEBUG
234: struct timeval mt[2];
235: #endif
1.34 parser 236: Value& url=params->as_no_junction(0, "url must not be code");
237: Value& body_code=params->as_junction(1, "body must be code");
1.1 paf 238:
1.19 parser 239: Table *protocol2driver_and_client=
1.35 parser 240: static_cast<Table *>(r.classes_conf.get(r.OP.name()));
1.11 paf 241:
1.63 paf 242: #ifdef RESOURCES_DEBUG
243: //measure:before
244: gettimeofday(&mt[0],NULL);
245: #endif
1.1 paf 246: // connect
1.67 paf 247: SQL_Connection_ptr connection=SQL_driver_manager->get_connection(
1.42 parser 248: url.as_string(), method_name, protocol2driver_and_client);
1.1 paf 249:
1.63 paf 250: #ifdef RESOURCES_DEBUG
251: //measure:after connect
252: gettimeofday(&mt[1],NULL);
253:
254: double t[2];
255: for(int i=0;i<2;i++)
256: t[i]=mt[i].tv_sec+mt[i].tv_usec/1000000.0;
257:
258: r.sql_connect_time+=t[1]-t[0];
259: #endif
1.67 paf 260: Temp_connection temp_connection(r, connection.get());
1.1 paf 261: // execute body
1.53 parser 262: try {
1.81 ! paf 263: r.write_assign_lang(r.process_to_value(body_code));
1.75 paf 264: } catch(...) { // process problem
1.67 paf 265: connection->mark_to_rollback();
266: /*re*/throw;
1.1 paf 267: }
268: }
269:
1.41 parser 270: #ifndef DOXYGEN
1.28 parser 271: struct Switch_data {
272: Value *searching;
273: Value *found;
274: Value *_default;
275: };
1.41 parser 276: #endif
1.28 parser 277: static void _switch(Request& r, const String&, MethodParams *params) {
1.81 ! paf 278: Switch_data data={&r.process_to_value(params->get(0))};
1.79 paf 279: Temp_hash_value switch_data_setter(r.classes_conf, *switch_data_name, &data);
1.28 parser 280:
1.81 ! paf 281: r.process_to_string(params->as_junction(1, "switch cases must be code")); // and ignore result
1.28 parser 282:
283: if(Value *code=data.found ? data.found : data._default)
1.81 ! paf 284: r.write_pass_lang(r.process_to_value(*code));
1.28 parser 285: }
286:
1.38 parser 287: static void _case(Request& r, const String& method_name, MethodParams *params) {
288: Pool& pool=r.pool();
289:
290: Switch_data *data=static_cast<Switch_data *>(r.classes_conf.get(*switch_data_name));
291: if(!data)
1.78 paf 292: throw Exception("parser.runtime",
1.38 parser 293: &method_name,
294: "without switch");
1.28 parser 295:
296: int count=params->size();
1.34 parser 297: Value *code=¶ms->as_junction(--count, "case result must be code");
1.28 parser 298: for(int i=0; i<count; i++) {
1.81 ! paf 299: Value& value=r.process_to_value(params->get(i));
1.28 parser 300:
1.36 parser 301: if(value.as_string() == *case_default_value) {
1.38 parser 302: data->_default=code;
1.28 parser 303: break;
304: }
305:
306: bool matches;
1.38 parser 307: if(data->searching->is_string())
308: matches=data->searching->as_string() == value.as_string();
1.28 parser 309: else
1.38 parser 310: matches=data->searching->as_double() == value.as_double();
1.28 parser 311:
312: if(matches) {
1.38 parser 313: data->found=code;
1.28 parser 314: break;
315: }
316: }
317: }
318:
1.63 paf 319: // cache--
320:
321: // consts
322:
1.79 paf 323: const int DATA_STRING_SERIALIZED_VERSION=0x0002;
1.63 paf 324:
325: // helper types
326:
327: #ifndef DOXYGEN
328: struct Data_string_serialized_prolog {
329: int version;
1.79 paf 330: time_t expires;
1.63 paf 331: };
332: #endif
333:
1.68 paf 334: void cache_delete(const String& file_spec) {
335: file_delete(file_spec, false/*fail_on_read_problem*/);
1.63 paf 336: }
1.69 paf 337:
338: #ifndef DOXYGEN
1.79 paf 339: struct Cache_data {
340: time_t expires;
341: };
1.69 paf 342: struct Locked_process_and_cache_put_action_info {
343: Request *r;
1.79 paf 344: Cache_data *data;
1.81 ! paf 345: Value *body_code; const String *evaluated_body;
1.69 paf 346: };
347: #endif
348: static void locked_process_and_cache_put_action(int f, void *context) {
349: Locked_process_and_cache_put_action_info& info=
350: *static_cast<Locked_process_and_cache_put_action_info *>(context);
351:
352: // body->process
1.81 ! paf 353: info.evaluated_body=&info.r->process_to_string(*info.body_code);
1.69 paf 354:
1.79 paf 355: // expiration time not spoiled by ^cache(0) or something?
356: if(info.data->expires > time(0)) {
357: // string -serialize> buffer
358: void *data; size_t data_size;
1.81 ! paf 359: info.evaluated_body->serialize(
1.79 paf 360: sizeof(Data_string_serialized_prolog),
361: data, data_size);
362: Data_string_serialized_prolog& prolog=
363: *static_cast<Data_string_serialized_prolog *>(data);
364: prolog.version=DATA_STRING_SERIALIZED_VERSION;
365: prolog.expires=info.data->expires;
366:
367: // buffer -write> file
368: write(f, data, data_size);
369: } else // expired!
370: info.data->expires=0; // flag it so that could be easily checked by caller
1.69 paf 371: }
1.81 ! paf 372: const String *locked_process_and_cache_put(Request& r,
1.69 paf 373: Value& body_code,
1.79 paf 374: Cache_data& data,
1.69 paf 375: const String& file_spec) {
376: Locked_process_and_cache_put_action_info info={
377: &r,
1.81 ! paf 378: &data,
! 379: &body_code
1.69 paf 380: };
381:
1.81 ! paf 382: const String *result=file_write_action_under_lock(
1.69 paf 383: file_spec,
384: "cache_put", locked_process_and_cache_put_action, &info,
385: false/*as_text*/,
386: false/*do_append*/,
1.81 ! paf 387: false/*block*/) ? info.evaluated_body: 0;
1.79 paf 388: if(data.expires==0)
389: cache_delete(file_spec);
390: return result;
1.63 paf 391: }
1.79 paf 392: String *cache_get(Pool& pool, const String& file_spec, time_t now) {
1.63 paf 393: void* data; size_t data_size;
1.72 paf 394: if(file_read(pool, file_spec,
1.63 paf 395: data, data_size,
396: false/*as_text*/,
1.69 paf 397: false/*fail_on_read_problem*/)
1.72 paf 398: && data_size/* ignore reads which are empty due to
399: non-unary open+lockEX conflict with lockSH */) {
1.63 paf 400:
1.72 paf 401: Data_string_serialized_prolog& prolog=
402: *static_cast<Data_string_serialized_prolog *>(data);
1.63 paf 403:
1.72 paf 404: String *result=new(pool) String(pool);
405: if(
406: data_size>=sizeof(Data_string_serialized_prolog)
407: && prolog.version==DATA_STRING_SERIALIZED_VERSION
1.79 paf 408: && prolog.expires > now
1.72 paf 409: && result->deserialize(
410: sizeof(Data_string_serialized_prolog), data, data_size, file_spec.cstr()))
411: return result;
412: }
1.63 paf 413:
1.72 paf 414: return 0;
1.63 paf 415: }
1.79 paf 416: static time_t as_expires(Request& r, const String& method_name, MethodParams *params,
417: int index, time_t now) {
418: time_t result;
419: Value& vlifespan_or_expires=params->get(index);
420: if(strcmp(vlifespan_or_expires.type(), VDATE_TYPE)==0)
421: result=static_cast<VDate&>(vlifespan_or_expires).get_time();
422: else
423: result=now+(time_t)params->as_double(index, "lifespan must be date or number", r);
424:
425: return result;
426: }
427: static const String as_file_spec(Request&r, MethodParams *params, int index) {
428: return r.absolute(params->as_string(index, "filespec must be string"));
429: }
1.63 paf 430: static void _cache(Request& r, const String& method_name, MethodParams *params) {
431: Pool& pool=r.pool();
1.79 paf 432: time_t now=time(0);
433:
434: // ^cache[filename] ^cache(seconds) ^cache[expires date]
435: if(params->size()==1) {
436: if(params->get(0).is_string()) { // filename?
437: cache_delete(as_file_spec(r, params, 0));
438: return;
439: }
440:
441: // secods|expires date
442: Cache_data *data=static_cast<Cache_data *>(r.classes_conf.get(*cache_data_name));
443: if(!data)
444: throw Exception("parser.runtime",
445: &method_name,
446: "expire-time reducing instruction without cache");
447:
448: time_t expires=as_expires(r, method_name, params, 0, now);
449: if(expires < data->expires)
450: data->expires=expires;
451:
452: return;
453: }
1.63 paf 454:
455: // file_spec, expires, body code
1.65 paf 456: const String &file_spec=r.absolute(params->as_string(0, "filespec must be string"));
457:
1.79 paf 458: Cache_data data;
459: Temp_hash_value cache_data_setter(r.classes_conf, *cache_data_name, &data);
460: data.expires=as_expires(r, method_name, params, 1, now);
1.63 paf 461: Value& body_code=params->as_junction(2, "body must be code");
462:
1.79 paf 463: if(data.expires>now) { // valid 'expires' specified? try cached copy...
1.69 paf 464: // hence we don't hope to have unary create/lockEX
465: // we need some plan to live in a life like that, so...
466: // worst races plan:
467: // A B
468: // open
469: // |open
470: // lockSH
471: // |nonblocking-lockEX fails
472: // unlockSH
473: // close, cache_get returns 0
474: // open
475: // nonblocking-lockEX succeeds; process, write, close
476: // |retry1: open
477: // ...
478: // |lockSH succeeds; ...
479:
480: for(int retry=0; retry<2; retry++) {
1.79 paf 481: if(String *cached_body=cache_get(pool, file_spec, now)) { // have cached copy?
482: // write it out
483: r.write_assign_lang(*cached_body);
484: // happy with it
485: return;
486: }
1.69 paf 487:
488: // non-blocked lock; process; cache it
1.81 ! paf 489: if(const String*processed_body=
! 490: locked_process_and_cache_put(r, body_code, data, file_spec)) {
1.63 paf 491: // write it out
1.69 paf 492: r.write_assign_lang(*processed_body);
1.63 paf 493: // happy with it
494: return;
1.69 paf 495: } else { // somebody writing result right now
496: pa_sleep(0, 500000); // waiting half a second
497: retry=0; // prolonging our wait, than could cache_get it, without processing body_code
1.63 paf 498: }
1.69 paf 499: }
1.78 paf 500: throw Exception(0,
1.69 paf 501: &file_spec,
502: "locking problem");
503: } else {
1.79 paf 504: // instructed not to cache; forget cached copy
1.68 paf 505: cache_delete(file_spec);
1.69 paf 506: // process
1.81 ! paf 507: const String& processed_body=r.process_to_string(body_code);
1.69 paf 508: // write it out
509: r.write_assign_lang(processed_body);
510: // happy with it
511: return;
512: }
513: // never reached
1.63 paf 514: }
515:
1.74 paf 516: // also used in pa_request.C to pass param to @unhandled_exception
517: VHash& exception2vhash(Pool& pool, const Exception& e) {
518: VHash& result=*new(pool) VHash(pool);
519: Hash& hash=result.hash(0);
1.78 paf 520: if(const char *type=e.type())
521: hash.put(*exception_type_part_name, new(pool) VString(*new(pool) String(pool, type)));
1.76 paf 522: if(const String *asource=e.problem_source()) {
523: String& source=*new(pool) String(pool);
524: source.append(*asource, String::UL_TAINTED, true/*forced*/);
525: result.set_name(source);
1.74 paf 526:
1.76 paf 527: hash.put(*exception_source_part_name, new(pool) VString(source));
1.74 paf 528: #ifndef NO_STRING_ORIGIN
1.76 paf 529: const Origin& origin=source.origin();
1.74 paf 530: hash.put(*new(pool) String(pool, "file"),
531: new(pool) VString(*new(pool) String(pool, origin.file)));
532: hash.put(*new(pool) String(pool, "lineno"),
533: new(pool) VInt(pool, 1+origin.line));
534: #endif
535: }
536: if(const char *ecomment=e.comment()) {
537: int comment_size=strlen(ecomment);
538: char *pcomment=(char *)pool.malloc(comment_size);
539: memcpy(pcomment, ecomment, comment_size);
540: hash.put(*exception_comment_part_name,
1.76 paf 541: new(pool) VString(*new(pool) String(pool, pcomment, comment_size, true/*tainted*/)));
1.74 paf 542: }
543: hash.put(*exception_handled_part_name,
544: new(pool) VBool(pool, false));
545:
546: return result;
547: }
548:
549: static void _try_operator(Request& r, const String& method_name, MethodParams *params) {
550: Pool& pool=r.pool();
551:
552: Value& body_code=params->as_junction(0, "body_code must be code");
553: Value& catch_code=params->as_junction(1, "catch_code must be code");
554:
555: Value *result;
556:
557: // taking snapshot of request processing status
1.77 paf 558: //int ssexception_trace=r.exception_trace.top_index();
559: int sstack=r.stack.top_index();
1.74 paf 560: Value *sself=r.self, *sroot=r.root, *srcontext=r.rcontext;
561: WContext *swcontext=r.wcontext;
562: try {
1.81 ! paf 563: result=&r.process_to_value(body_code);
1.74 paf 564: } catch(const Exception& e) {
565: // restoring request processing status
1.77 paf 566: //r.exception_trace.top_index(ssexception_trace);
567: r.stack.top_index(sstack);
1.74 paf 568: r.self=sself; r.root=sroot, r.rcontext=srcontext; r.wcontext=swcontext;
1.77 paf 569:
1.74 paf 570:
571: VHash& vhash=exception2vhash(pool, e);
572:
573: Junction *junction=catch_code.get_junction();
574: Value *saved_exception_var_value=junction->root->get_element(*exception_var_name);
575: junction->root->put_element(*exception_var_name, &vhash);
1.81 ! paf 576: result=&r.process_to_value(catch_code);
1.74 paf 577: bool handled=false;
578: if(Value *value=static_cast<Value *>(vhash.hash(0).get(*exception_handled_part_name)))
579: handled=value->as_bool();
580: junction->root->put_element(*exception_var_name, saved_exception_var_value);
581:
582: if(!handled)
583: throw(e); // rethrow
584: }
585: // write it out
586: r.write_pass_lang(*result);
587: }
588:
589: static void _throw_operator(Request& r, const String& method_name, MethodParams *params) {
590: Pool& pool=r.pool();
591:
592: if(params->size()==1) {
593: Value& param0=params->get(0);
594: if(Hash *hash=param0.get_hash(&method_name)) {
1.78 paf 595: const char *type=0;
1.74 paf 596: if(Value *value=static_cast<Value *>(hash->get(*exception_type_part_name)))
1.78 paf 597: type=value->as_string().cstr();
1.74 paf 598: const String *source=0;
599: if(Value *value=static_cast<Value *>(hash->get(*exception_source_part_name)))
600: source=&value->as_string();
601: const char *comment=0;
602: if(Value *value=
603: static_cast<Value *>(hash->get(*exception_comment_part_name)))
604: comment=value->as_string().cstr();
605:
1.78 paf 606: throw Exception(type,
1.74 paf 607: source?source:&method_name,
608: comment);
609: } else
1.78 paf 610: throw Exception("parser.runtime",
1.74 paf 611: &method_name,
612: "one-param version has hash param");
613: } else {
1.78 paf 614: const char *type=params->as_string(0, "type must be string").cstr();
1.74 paf 615: const String& source=params->as_string(1, "source must be string");
616: const char *comment=params->as_string(2, "comment must be string").cstr();
1.78 paf 617: throw Exception(type, &source, comment);
1.74 paf 618: }
619: }
620:
1.10 paf 621: // constructor
622:
1.11 paf 623: MOP::MOP(Pool& apool) : Methoded(apool),
624: main_sql_name(apool, MAIN_SQL_NAME),
625: main_sql_drivers_name(apool, MAIN_SQL_DRIVERS_NAME)
626: {
1.10 paf 627: set_name(*NEW String(pool(), OP_CLASS_NAME));
1.28 parser 628:
1.1 paf 629: // ^if(condition){code-when-true}
630: // ^if(condition){code-when-true}{code-when-false}
1.10 paf 631: add_native_method("if", Method::CT_ANY, _if, 2, 3);
1.1 paf 632:
633: // ^untaint[as-is|uri|sql|js|html|html-typo]{code}
1.59 paf 634: add_native_method("untaint", Method::CT_ANY, _untaint, 1, 2);
1.1 paf 635:
636: // ^taint[as-is|uri|sql|js|html|html-typo]{code}
1.10 paf 637: add_native_method("taint", Method::CT_ANY, _taint, 1, 2);
1.1 paf 638:
639: // ^process[code]
1.10 paf 640: add_native_method("process", Method::CT_ANY, _process, 1, 1);
1.1 paf 641:
642: // ^rem{code}
1.51 parser 643: add_native_method("rem", Method::CT_ANY, _rem, 1, 10000);
1.1 paf 644:
645: // ^while(condition){code}
1.10 paf 646: add_native_method("while", Method::CT_ANY, _while, 2, 2);
1.1 paf 647:
648: // ^use[file]
1.10 paf 649: add_native_method("use", Method::CT_ANY, _use, 1, 1);
1.1 paf 650:
1.54 paf 651: // ^for[i](from-number;to-number-inclusive){code}[delim]
1.10 paf 652: add_native_method("for", Method::CT_ANY, _for, 3+1, 3+1+1);
1.1 paf 653:
654: // ^eval(expr)
655: // ^eval(expr)[format]
1.10 paf 656: add_native_method("eval", Method::CT_ANY, _eval, 1, 2);
1.52 parser 657:
1.1 paf 658: // ^connect[protocol://user:pass@host[:port]/database]{code with ^sql-s}
1.10 paf 659: add_native_method("connect", Method::CT_ANY, _connect, 2, 2);
660:
1.63 paf 661:
1.65 paf 662: // ^cache[file_spec] delete cache
1.63 paf 663: // ^cache[file_spec](time){code} time=0 no cache
1.65 paf 664: add_native_method("cache", Method::CT_ANY, _cache, 1, 3);
1.63 paf 665:
1.28 parser 666: // switch
667:
668: // ^switch[value]{cases}
669: add_native_method("switch", Method::CT_ANY, _switch, 2, 2);
670:
671: // ^case[value]{code}
1.51 parser 672: add_native_method("case", Method::CT_ANY, _case, 2, 10000);
1.74 paf 673:
674: // try-catch
675:
676: // ^try{code}{catch code}
677: add_native_method("try", Method::CT_ANY, _try_operator, 2, 2);
678: // ^throw[$exception hash]
679: // ^throw[type;source;comment]
680: add_native_method("throw", Method::CT_ANY, _throw_operator, 1, 3);
681:
1.10 paf 682: }
1.11 paf 683:
684: // constructor & configurator
1.1 paf 685:
1.10 paf 686: Methoded *MOP_create(Pool& pool) {
1.35 parser 687: return new(pool) MOP(pool);
1.11 paf 688: }
689:
690: void MOP::configure_user(Request& r) {
691: Pool& pool=r.pool();
692:
693: // $MAIN:SQL.drivers
694: if(Value *sql=r.main_class->get_element(main_sql_name))
695: if(Value *element=sql->get_element(main_sql_drivers_name))
696: if(Table *protocol2library=element->get_table())
697: r.classes_conf.put(name(), protocol2library);
1.1 paf 698: }
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