Annotation of parser3/src/classes/op.C, revision 1.79
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:
1.79 ! paf 7: $Id: op.C,v 1.78 2002/03/27 15:30:34 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:
44: bool condition=r.process(condition_code,
45: 0/*no name*/,
46: false/*don't intercept string*/).as_bool();
1.6 paf 47: if(condition)
1.34 parser 48: r.write_pass_lang(r.process(params->as_junction(1, "'then' parameter must be code")));
1.50 parser 49: else if(params->size()>2)
1.34 parser 50: r.write_pass_lang(r.process(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;
1.5 paf 72: r.write_pass_lang(r.process(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=
1.61 paf 127: r.process(params->as_junction(0, "body must be code")).as_string();
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=
166: r.process(
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
174: r.write_pass_lang(r.process(body));
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:
202: Value& processed_body=r.process(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?
1.49 parser 206: r.write_pass_lang(r.process(*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
216: Value *result=r.process(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 {
1.67 paf 263: r.write_assign_lang(r.process(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) {
278: Switch_data data={&r.process(params->get(0))};
1.79 ! paf 279: Temp_hash_value switch_data_setter(r.classes_conf, *switch_data_name, &data);
1.28 parser 280:
1.34 parser 281: r.process(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)
284: r.write_pass_lang(r.process(*code));
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++) {
299: Value& value=r.process(params->get(i));
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;
344: Value *body;
1.79 ! paf 345: Cache_data *data;
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
353: info.body=&info.r->process(*info.body);
354:
1.79 ! paf 355: // expiration time not spoiled by ^cache(0) or something?
! 356: if(info.data->expires > time(0)) {
! 357: // result->string
! 358: const String& data_string=info.body->as_string();
! 359:
! 360: // string -serialize> buffer
! 361: void *data; size_t data_size;
! 362: data_string.serialize(
! 363: sizeof(Data_string_serialized_prolog),
! 364: data, data_size);
! 365: Data_string_serialized_prolog& prolog=
! 366: *static_cast<Data_string_serialized_prolog *>(data);
! 367: prolog.version=DATA_STRING_SERIALIZED_VERSION;
! 368: prolog.expires=info.data->expires;
! 369:
! 370: // buffer -write> file
! 371: write(f, data, data_size);
! 372: } else // expired!
! 373: info.data->expires=0; // flag it so that could be easily checked by caller
1.69 paf 374: }
375: Value *locked_process_and_cache_put(Request& r,
376: Value& body_code,
1.79 ! paf 377: Cache_data& data,
1.69 paf 378: const String& file_spec) {
379: Locked_process_and_cache_put_action_info info={
380: &r,
381: &body_code,
1.79 ! paf 382: &data
1.69 paf 383: };
384:
1.79 ! paf 385: Value *result=file_write_action_under_lock(
1.69 paf 386: file_spec,
387: "cache_put", locked_process_and_cache_put_action, &info,
388: false/*as_text*/,
389: false/*do_append*/,
390: false/*block*/) ? info.body : 0;
1.79 ! paf 391: if(data.expires==0)
! 392: cache_delete(file_spec);
! 393: return result;
1.63 paf 394: }
1.79 ! paf 395: String *cache_get(Pool& pool, const String& file_spec, time_t now) {
1.63 paf 396: void* data; size_t data_size;
1.72 paf 397: if(file_read(pool, file_spec,
1.63 paf 398: data, data_size,
399: false/*as_text*/,
1.69 paf 400: false/*fail_on_read_problem*/)
1.72 paf 401: && data_size/* ignore reads which are empty due to
402: non-unary open+lockEX conflict with lockSH */) {
1.63 paf 403:
1.72 paf 404: Data_string_serialized_prolog& prolog=
405: *static_cast<Data_string_serialized_prolog *>(data);
1.63 paf 406:
1.72 paf 407: String *result=new(pool) String(pool);
408: if(
409: data_size>=sizeof(Data_string_serialized_prolog)
410: && prolog.version==DATA_STRING_SERIALIZED_VERSION
1.79 ! paf 411: && prolog.expires > now
1.72 paf 412: && result->deserialize(
413: sizeof(Data_string_serialized_prolog), data, data_size, file_spec.cstr()))
414: return result;
415: }
1.63 paf 416:
1.72 paf 417: return 0;
1.63 paf 418: }
1.79 ! paf 419: static time_t as_expires(Request& r, const String& method_name, MethodParams *params,
! 420: int index, time_t now) {
! 421: time_t result;
! 422: Value& vlifespan_or_expires=params->get(index);
! 423: if(strcmp(vlifespan_or_expires.type(), VDATE_TYPE)==0)
! 424: result=static_cast<VDate&>(vlifespan_or_expires).get_time();
! 425: else
! 426: result=now+(time_t)params->as_double(index, "lifespan must be date or number", r);
! 427:
! 428: return result;
! 429: }
! 430: static const String as_file_spec(Request&r, MethodParams *params, int index) {
! 431: return r.absolute(params->as_string(index, "filespec must be string"));
! 432: }
1.63 paf 433: static void _cache(Request& r, const String& method_name, MethodParams *params) {
434: Pool& pool=r.pool();
1.79 ! paf 435: time_t now=time(0);
! 436:
! 437: // ^cache[filename] ^cache(seconds) ^cache[expires date]
! 438: if(params->size()==1) {
! 439: if(params->get(0).is_string()) { // filename?
! 440: cache_delete(as_file_spec(r, params, 0));
! 441: return;
! 442: }
! 443:
! 444: // secods|expires date
! 445: Cache_data *data=static_cast<Cache_data *>(r.classes_conf.get(*cache_data_name));
! 446: if(!data)
! 447: throw Exception("parser.runtime",
! 448: &method_name,
! 449: "expire-time reducing instruction without cache");
! 450:
! 451: time_t expires=as_expires(r, method_name, params, 0, now);
! 452: if(expires < data->expires)
! 453: data->expires=expires;
! 454:
! 455: return;
! 456: }
1.63 paf 457:
458: // file_spec, expires, body code
1.65 paf 459: const String &file_spec=r.absolute(params->as_string(0, "filespec must be string"));
460:
1.79 ! paf 461: Cache_data data;
! 462: Temp_hash_value cache_data_setter(r.classes_conf, *cache_data_name, &data);
! 463: data.expires=as_expires(r, method_name, params, 1, now);
1.63 paf 464: Value& body_code=params->as_junction(2, "body must be code");
465:
1.79 ! paf 466: if(data.expires>now) { // valid 'expires' specified? try cached copy...
1.63 paf 467: size_t size;
468: time_t atime, mtime, ctime;
1.69 paf 469:
470: // hence we don't hope to have unary create/lockEX
471: // we need some plan to live in a life like that, so...
472: // worst races plan:
473: // A B
474: // open
475: // |open
476: // lockSH
477: // |nonblocking-lockEX fails
478: // unlockSH
479: // close, cache_get returns 0
480: // open
481: // nonblocking-lockEX succeeds; process, write, close
482: // |retry1: open
483: // ...
484: // |lockSH succeeds; ...
485:
486: for(int retry=0; retry<2; retry++) {
1.79 ! paf 487: if(String *cached_body=cache_get(pool, file_spec, now)) { // have cached copy?
! 488: // write it out
! 489: r.write_assign_lang(*cached_body);
! 490: // happy with it
! 491: return;
! 492: }
1.69 paf 493:
494: // non-blocked lock; process; cache it
1.79 ! paf 495: if(Value *processed_body=locked_process_and_cache_put(r, body_code, data, file_spec)) {
1.63 paf 496: // write it out
1.69 paf 497: r.write_assign_lang(*processed_body);
1.63 paf 498: // happy with it
499: return;
1.69 paf 500: } else { // somebody writing result right now
501: pa_sleep(0, 500000); // waiting half a second
502: retry=0; // prolonging our wait, than could cache_get it, without processing body_code
1.63 paf 503: }
1.69 paf 504: }
1.78 paf 505: throw Exception(0,
1.69 paf 506: &file_spec,
507: "locking problem");
508: } else {
1.79 ! paf 509: // instructed not to cache; forget cached copy
1.68 paf 510: cache_delete(file_spec);
1.69 paf 511: // process
512: Value& processed_body=r.process(body_code);
513: // write it out
514: r.write_assign_lang(processed_body);
515: // happy with it
516: return;
517: }
518: // never reached
1.63 paf 519: }
520:
1.74 paf 521: // also used in pa_request.C to pass param to @unhandled_exception
522: VHash& exception2vhash(Pool& pool, const Exception& e) {
523: VHash& result=*new(pool) VHash(pool);
524: Hash& hash=result.hash(0);
1.78 paf 525: if(const char *type=e.type())
526: hash.put(*exception_type_part_name, new(pool) VString(*new(pool) String(pool, type)));
1.76 paf 527: if(const String *asource=e.problem_source()) {
528: String& source=*new(pool) String(pool);
529: source.append(*asource, String::UL_TAINTED, true/*forced*/);
530: result.set_name(source);
1.74 paf 531:
1.76 paf 532: hash.put(*exception_source_part_name, new(pool) VString(source));
1.74 paf 533: #ifndef NO_STRING_ORIGIN
1.76 paf 534: const Origin& origin=source.origin();
1.74 paf 535: hash.put(*new(pool) String(pool, "file"),
536: new(pool) VString(*new(pool) String(pool, origin.file)));
537: hash.put(*new(pool) String(pool, "lineno"),
538: new(pool) VInt(pool, 1+origin.line));
539: #endif
540: }
541: if(const char *ecomment=e.comment()) {
542: int comment_size=strlen(ecomment);
543: char *pcomment=(char *)pool.malloc(comment_size);
544: memcpy(pcomment, ecomment, comment_size);
545: hash.put(*exception_comment_part_name,
1.76 paf 546: new(pool) VString(*new(pool) String(pool, pcomment, comment_size, true/*tainted*/)));
1.74 paf 547: }
548: hash.put(*exception_handled_part_name,
549: new(pool) VBool(pool, false));
550:
551: return result;
552: }
553:
554: static void _try_operator(Request& r, const String& method_name, MethodParams *params) {
555: Pool& pool=r.pool();
556:
557: Value& body_code=params->as_junction(0, "body_code must be code");
558: Value& catch_code=params->as_junction(1, "catch_code must be code");
559:
560: Value *result;
561:
562: // taking snapshot of request processing status
1.77 paf 563: //int ssexception_trace=r.exception_trace.top_index();
564: int sstack=r.stack.top_index();
1.74 paf 565: Value *sself=r.self, *sroot=r.root, *srcontext=r.rcontext;
566: WContext *swcontext=r.wcontext;
567: try {
568: result=&r.process(body_code);
569: } catch(const Exception& e) {
570: // restoring request processing status
1.77 paf 571: //r.exception_trace.top_index(ssexception_trace);
572: r.stack.top_index(sstack);
1.74 paf 573: r.self=sself; r.root=sroot, r.rcontext=srcontext; r.wcontext=swcontext;
1.77 paf 574:
1.74 paf 575:
576: VHash& vhash=exception2vhash(pool, e);
577:
578: Junction *junction=catch_code.get_junction();
579: Value *saved_exception_var_value=junction->root->get_element(*exception_var_name);
580: junction->root->put_element(*exception_var_name, &vhash);
581: result=&r.process(catch_code);
582: bool handled=false;
583: if(Value *value=static_cast<Value *>(vhash.hash(0).get(*exception_handled_part_name)))
584: handled=value->as_bool();
585: junction->root->put_element(*exception_var_name, saved_exception_var_value);
586:
587: if(!handled)
588: throw(e); // rethrow
589: }
590: // write it out
591: r.write_pass_lang(*result);
592: }
593:
594: static void _throw_operator(Request& r, const String& method_name, MethodParams *params) {
595: Pool& pool=r.pool();
596:
597: if(params->size()==1) {
598: Value& param0=params->get(0);
599: if(Hash *hash=param0.get_hash(&method_name)) {
1.78 paf 600: const char *type=0;
1.74 paf 601: if(Value *value=static_cast<Value *>(hash->get(*exception_type_part_name)))
1.78 paf 602: type=value->as_string().cstr();
1.74 paf 603: const String *source=0;
604: if(Value *value=static_cast<Value *>(hash->get(*exception_source_part_name)))
605: source=&value->as_string();
606: const char *comment=0;
607: if(Value *value=
608: static_cast<Value *>(hash->get(*exception_comment_part_name)))
609: comment=value->as_string().cstr();
610:
1.78 paf 611: throw Exception(type,
1.74 paf 612: source?source:&method_name,
613: comment);
614: } else
1.78 paf 615: throw Exception("parser.runtime",
1.74 paf 616: &method_name,
617: "one-param version has hash param");
618: } else {
1.78 paf 619: const char *type=params->as_string(0, "type must be string").cstr();
1.74 paf 620: const String& source=params->as_string(1, "source must be string");
621: const char *comment=params->as_string(2, "comment must be string").cstr();
1.78 paf 622: throw Exception(type, &source, comment);
1.74 paf 623: }
624: }
625:
1.10 paf 626: // constructor
627:
1.11 paf 628: MOP::MOP(Pool& apool) : Methoded(apool),
629: main_sql_name(apool, MAIN_SQL_NAME),
630: main_sql_drivers_name(apool, MAIN_SQL_DRIVERS_NAME)
631: {
1.10 paf 632: set_name(*NEW String(pool(), OP_CLASS_NAME));
1.28 parser 633:
1.1 paf 634: // ^if(condition){code-when-true}
635: // ^if(condition){code-when-true}{code-when-false}
1.10 paf 636: add_native_method("if", Method::CT_ANY, _if, 2, 3);
1.1 paf 637:
638: // ^untaint[as-is|uri|sql|js|html|html-typo]{code}
1.59 paf 639: add_native_method("untaint", Method::CT_ANY, _untaint, 1, 2);
1.1 paf 640:
641: // ^taint[as-is|uri|sql|js|html|html-typo]{code}
1.10 paf 642: add_native_method("taint", Method::CT_ANY, _taint, 1, 2);
1.1 paf 643:
644: // ^process[code]
1.10 paf 645: add_native_method("process", Method::CT_ANY, _process, 1, 1);
1.1 paf 646:
647: // ^rem{code}
1.51 parser 648: add_native_method("rem", Method::CT_ANY, _rem, 1, 10000);
1.1 paf 649:
650: // ^while(condition){code}
1.10 paf 651: add_native_method("while", Method::CT_ANY, _while, 2, 2);
1.1 paf 652:
653: // ^use[file]
1.10 paf 654: add_native_method("use", Method::CT_ANY, _use, 1, 1);
1.1 paf 655:
1.54 paf 656: // ^for[i](from-number;to-number-inclusive){code}[delim]
1.10 paf 657: add_native_method("for", Method::CT_ANY, _for, 3+1, 3+1+1);
1.1 paf 658:
659: // ^eval(expr)
660: // ^eval(expr)[format]
1.10 paf 661: add_native_method("eval", Method::CT_ANY, _eval, 1, 2);
1.52 parser 662:
1.1 paf 663: // ^connect[protocol://user:pass@host[:port]/database]{code with ^sql-s}
1.10 paf 664: add_native_method("connect", Method::CT_ANY, _connect, 2, 2);
665:
1.63 paf 666:
1.65 paf 667: // ^cache[file_spec] delete cache
1.63 paf 668: // ^cache[file_spec](time){code} time=0 no cache
1.65 paf 669: add_native_method("cache", Method::CT_ANY, _cache, 1, 3);
1.63 paf 670:
1.28 parser 671: // switch
672:
673: // ^switch[value]{cases}
674: add_native_method("switch", Method::CT_ANY, _switch, 2, 2);
675:
676: // ^case[value]{code}
1.51 parser 677: add_native_method("case", Method::CT_ANY, _case, 2, 10000);
1.74 paf 678:
679: // try-catch
680:
681: // ^try{code}{catch code}
682: add_native_method("try", Method::CT_ANY, _try_operator, 2, 2);
683: // ^throw[$exception hash]
684: // ^throw[type;source;comment]
685: add_native_method("throw", Method::CT_ANY, _throw_operator, 1, 3);
686:
1.10 paf 687: }
1.11 paf 688:
689: // constructor & configurator
1.1 paf 690:
1.10 paf 691: Methoded *MOP_create(Pool& pool) {
1.35 parser 692: return new(pool) MOP(pool);
1.11 paf 693: }
694:
695: void MOP::configure_user(Request& r) {
696: Pool& pool=r.pool();
697:
698: // $MAIN:SQL.drivers
699: if(Value *sql=r.main_class->get_element(main_sql_name))
700: if(Value *element=sql->get_element(main_sql_drivers_name))
701: if(Table *protocol2library=element->get_table())
702: r.classes_conf.put(name(), protocol2library);
1.1 paf 703: }
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