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1.117 paf 1: /** @file
1.118 paf 2: Parser: executor part of request class.
3:
1.324 misha 4: Copyright (c) 2001-2009 ArtLebedev Group (http://www.artlebedev.com)
1.218 paf 5: Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)
1.243 paf 6: */
1.118 paf 7:
1.331 ! misha 8: static const char * const IDENT_EXECUTE_C="$Date: 2009-04-30 04:39:29 $";
1.1 paf 9:
1.152 paf 10: #include "pa_opcode.h"
1.8 paf 11: #include "pa_array.h"
1.11 paf 12: #include "pa_request.h"
1.15 paf 13: #include "pa_vstring.h"
1.22 paf 14: #include "pa_vhash.h"
1.167 parser 15: #include "pa_vvoid.h"
1.145 paf 16: #include "pa_vcode_frame.h"
1.321 misha 17: #include "pa_vmethod_frame.h"
1.38 paf 18: #include "pa_vobject.h"
1.49 paf 19: #include "pa_vdouble.h"
1.54 paf 20: #include "pa_vbool.h"
1.94 paf 21: #include "pa_vtable.h"
1.132 paf 22: #include "pa_vfile.h"
1.144 paf 23: #include "pa_vimage.h"
1.194 parser 24: #include "pa_wwrapper.h"
1.1 paf 25:
1.233 paf 26: //#define DEBUG_EXECUTE
1.157 parser 27:
28: #ifdef DEBUG_EXECUTE
1.1 paf 29: char *opcode_name[]={
1.49 paf 30: // literals
1.109 paf 31: "VALUE", "CURLY_CODE__STORE_PARAM", "EXPR_CODE__STORE_PARAM",
1.209 paf 32: "NESTED_CODE",
1.49 paf 33:
34: // actions
1.187 parser 35: "WITH_ROOT", "WITH_SELF", "WITH_READ", "WITH_WRITE",
1.328 misha 36: #ifdef OPTIMIZE_BYTECODE_GET_CLASS
37: "VALUE__GET_CLASS",
38: #else
1.66 paf 39: "GET_CLASS",
1.328 misha 40: #endif
1.182 parser 41: "CONSTRUCT_VALUE", "CONSTRUCT_EXPR", "CURLY_CODE__CONSTRUCT",
1.108 paf 42: "WRITE_VALUE", "WRITE_EXPR_RESULT", "STRING__WRITE",
1.328 misha 43: #ifdef OPTIMIZE_BYTECODE_GET_ELEMENT
44: "VALUE__GET_ELEMENT_OR_OPERATOR",
45: #else
46: "GET_ELEMENT_OR_OPERATOR",
47: #endif
48: "GET_ELEMENT",
49: #ifdef OPTIMIZE_BYTECODE_GET_ELEMENT
50: "VALUE__GET_ELEMENT",
51: #endif
52: "GET_ELEMENT__WRITE",
53: #ifdef OPTIMIZE_BYTECODE_GET_ELEMENT
54: "VALUE__GET_ELEMENT__WRITE",
55: #endif
1.232 paf 56: "OBJECT_POOL", "STRING_POOL",
57: "PREPARE_TO_CONSTRUCT_OBJECT", "PREPARE_TO_EXPRESSION",
58: "CALL", "CALL__WRITE",
1.49 paf 59:
60: // expression ops: unary
1.148 paf 61: "NEG", "INV", "NOT", "DEF", "IN", "FEXISTS", "DEXISTS",
1.49 paf 62: // expression ops: binary
1.201 paf 63: "SUB", "ADD", "MUL", "DIV", "MOD", "INTDIV",
1.275 paf 64: "BIN_SL", "BIN_SR",
1.56 paf 65: "BIN_AND", "BIN_OR", "BIN_XOR",
66: "LOG_AND", "LOG_OR", "LOG_XOR",
1.49 paf 67: "NUM_LT", "NUM_GT", "NUM_LE", "NUM_GE", "NUM_EQ", "NUM_NE",
1.103 paf 68: "STR_LT", "STR_GT", "STR_LE", "STR_GE", "STR_EQ", "STR_NE",
69: "IS"
1.1 paf 70: };
71:
1.297 paf 72: void va_debug_printf(SAPI_Info& sapi_info, const char* fmt,va_list args) {
1.127 paf 73: char buf[MAX_STRING];
74: vsnprintf(buf, MAX_STRING, fmt, args);
1.297 paf 75: SAPI::log(sapi_info, "%s", buf);
1.107 paf 76: }
77:
1.297 paf 78: void debug_printf(SAPI_Info& sapi_info, const char* fmt, ...) {
1.107 paf 79: va_list args;
1.297 paf 80: va_start(args, fmt);
81: va_debug_printf(sapi_info, fmt, args);
1.107 paf 82: va_end(args);
1.105 paf 83: }
84:
1.297 paf 85: void debug_dump(SAPI_Info& sapi_info, int level, ArrayOperation& ops) {
86: Array_iterator<Operation> i(ops);
1.190 parser 87: while(i.has_next()) {
1.323 misha 88: OP::OPCODE opcode=i.next().code;
1.1 paf 89:
1.328 misha 90: if(
91: opcode==OP::OP_VALUE
92: || opcode==OP::OP_STRING__WRITE
93: #ifdef OPTIMIZE_BYTECODE_GET_CLASS
94: || opcode==OP::OP_VALUE__GET_CLASS
95: #endif
96: #ifdef OPTIMIZE_BYTECODE_GET_ELEMENT
97: || opcode==OP::OP_VALUE__GET_ELEMENT
98: || opcode==OP::OP_VALUE__GET_ELEMENT__WRITE
99: || opcode==OP::OP_VALUE__GET_ELEMENT_OR_OPERATOR
100: #endif
101: ) {
1.297 paf 102: Operation::Origin origin=i.next().origin;
103: Value& value=*i.next().value;
104: debug_printf(sapi_info,
1.133 paf 105: "%*s%s"
106: " \"%s\" %s",
1.297 paf 107: level*4, "", opcode_name[opcode],
108: value.get_string()->cstr(), value.type());
1.133 paf 109: continue;
1.15 paf 110: }
1.297 paf 111: debug_printf(sapi_info, "%*s%s", level*4, "", opcode_name[opcode]);
1.1 paf 112:
1.297 paf 113: switch(opcode) {
1.323 misha 114: case OP::OP_CURLY_CODE__STORE_PARAM:
115: case OP::OP_EXPR_CODE__STORE_PARAM:
116: case OP::OP_CURLY_CODE__CONSTRUCT:
117: case OP::OP_NESTED_CODE:
118: case OP::OP_OBJECT_POOL:
119: case OP::OP_STRING_POOL:
120: case OP::OP_CALL:
121: case OP::OP_CALL__WRITE:
1.297 paf 122: if(ArrayOperation* local_ops=i.next().ops)
123: debug_dump(sapi_info, level+1, *local_ops);
1.1 paf 124: }
125: }
126: }
1.157 parser 127: #endif
1.1 paf 128:
1.297 paf 129: // Request
130:
131: void Request::execute(ArrayOperation& ops) {
132: register Stack<StackItem>& stack=this->stack; // helps a lot on MSVC: 'esi'
1.159 parser 133:
1.304 paf 134: const String* debug_name=0; Operation::Origin debug_origin={0, 0, 0};
1.297 paf 135: try{
1.157 parser 136: #ifdef DEBUG_EXECUTE
1.297 paf 137: debug_printf(sapi_info, "source----------------------------\n");
138: debug_dump(sapi_info, 0, ops);
139: debug_printf(sapi_info, "execution-------------------------\n");
1.157 parser 140: #endif
1.297 paf 141: for(Array_iterator<Operation> i(ops); i.has_next(); ) {
1.322 misha 142: OP::OPCODE opcode=i.next().code;
1.293 paf 143:
1.157 parser 144: #ifdef DEBUG_EXECUTE
1.297 paf 145: debug_printf(sapi_info, "%d:%s", stack.top_index()+1, opcode_name[opcode]);
1.157 parser 146: #endif
1.11 paf 147:
1.297 paf 148: switch(opcode) {
1.51 paf 149: // param in next instruction
1.322 misha 150: case OP::OP_VALUE:
1.32 paf 151: {
1.297 paf 152: debug_origin=i.next().origin;
153: Value& value=*i.next().value;
1.157 parser 154: #ifdef DEBUG_EXECUTE
1.297 paf 155: debug_printf(sapi_info, " \"%s\" %s", value.get_string()->cstr(), value.type());
1.157 parser 156: #endif
1.297 paf 157: stack.push(value);
1.32 paf 158: break;
159: }
1.328 misha 160:
161: #ifdef OPTIMIZE_BYTECODE_GET_CLASS
162: case OP::OP_VALUE__GET_CLASS:
163: {
164: // maybe they do ^class:method[] call, remember the fact
165: wcontext->set_somebody_entered_some_class();
166:
167: debug_origin=i.next().origin;
168: Value& value=*i.next().value;
169: const String& name=*value.get_string();
170:
171: #ifdef DEBUG_EXECUTE
172: debug_printf(sapi_info, " \"%s\" ", name.cstr());
173: #endif
174:
175: Value* class_value=classes().get(name);
176: if(!class_value)
177: throw Exception(PARSER_RUNTIME,
178: &name,
179: "class is undefined");
180:
181: stack.push(*class_value);
182: break;
183: }
184: #else
1.322 misha 185: case OP::OP_GET_CLASS:
1.38 paf 186: {
1.130 paf 187: // maybe they do ^class:method[] call, remember the fact
1.215 paf 188: wcontext->set_somebody_entered_some_class();
1.98 paf 189:
1.297 paf 190: const String& name=stack.pop().string();
191: Value* value=classes().get(name);
1.120 paf 192: if(!value)
1.316 misha 193: throw Exception(PARSER_RUNTIME,
1.66 paf 194: &name,
1.143 paf 195: "class is undefined");
1.66 paf 196:
1.297 paf 197: stack.push(*value);
1.38 paf 198: break;
199: }
1.328 misha 200: #endif
1.51 paf 201: // OP_WITH
1.322 misha 202: case OP::OP_WITH_ROOT:
1.187 parser 203: {
1.297 paf 204: stack.push(*method_frame);
1.187 parser 205: break;
206: }
1.322 misha 207: case OP::OP_WITH_SELF:
1.37 paf 208: {
1.297 paf 209: stack.push(get_self());
1.37 paf 210: break;
211: }
1.322 misha 212: case OP::OP_WITH_READ:
1.15 paf 213: {
1.297 paf 214: stack.push(*rcontext);
1.20 paf 215: break;
216: }
1.322 misha 217: case OP::OP_WITH_WRITE:
1.20 paf 218: {
1.287 paf 219: if(wcontext==method_frame)
1.316 misha 220: throw Exception(PARSER_RUNTIME,
1.287 paf 221: 0,
222: "$.name outside of $name[...]");
223:
1.297 paf 224: stack.push(*wcontext);
1.20 paf 225: break;
226: }
1.37 paf 227:
1.51 paf 228: // OTHER ACTIONS BUT WITHs
1.322 misha 229: case OP::OP_CONSTRUCT_VALUE:
1.20 paf 230: {
1.297 paf 231: Value& value=stack.pop().value();
232: const String& name=stack.pop().string(); debug_name=&name;
233: Value& ncontext=stack.pop().value();
1.329 misha 234: put_element(ncontext, name, &value);
1.308 paf 235:
1.213 paf 236: break;
237: }
1.322 misha 238: case OP::OP_CONSTRUCT_EXPR:
1.80 paf 239: {
1.219 paf 240: // see OP_PREPARE_TO_EXPRESSION
241: wcontext->set_in_expression(false);
242:
1.308 paf 243: Value& expr=stack.pop().value();
1.297 paf 244: const String& name=stack.pop().string(); debug_name=&name;
245: Value& ncontext=stack.pop().value();
1.308 paf 246: Value& value=expr.as_expr_result();
1.329 misha 247: put_element(ncontext, name, &value);
1.80 paf 248: break;
249: }
1.322 misha 250: case OP::OP_CURLY_CODE__CONSTRUCT:
1.182 parser 251: {
1.297 paf 252: ArrayOperation& local_ops=*i.next().ops;
1.182 parser 253: #ifdef DEBUG_EXECUTE
1.297 paf 254: debug_printf(sapi_info, " (%d)\n", local_ops.count());
255: debug_dump(sapi_info, 1, local_ops);
1.326 misha 256: #endif
257: VJunction& value=*new VJunction(
1.297 paf 258: get_self(), 0,
1.257 paf 259: method_frame,
1.240 paf 260: rcontext,
261: wcontext,
1.312 paf 262: &local_ops);
1.238 paf 263:
1.326 misha 264: wcontext->attach_junction(&value);
265:
1.297 paf 266: const String& name=stack.pop().string(); debug_name=&name;
267: Value& ncontext=stack.pop().value();
1.312 paf 268: if(const VJunction* vjunction=ncontext.put_element(ncontext, name, &value, false))
269: if(vjunction!=PUT_ELEMENT_REPLACED_ELEMENT)
1.316 misha 270: throw Exception(PARSER_RUNTIME,
1.308 paf 271: 0,
272: "property value can not be code, use [] or () brackets");
273:
1.182 parser 274: break;
275: }
1.322 misha 276: case OP::OP_NESTED_CODE:
1.209 paf 277: {
1.297 paf 278: ArrayOperation& local_ops=*i.next().ops;
1.209 paf 279: #ifdef DEBUG_EXECUTE
1.297 paf 280: debug_printf(sapi_info, " (%d)\n", local_ops.count());
281: debug_dump(sapi_info, 1, local_ops);
1.209 paf 282: #endif
1.297 paf 283: stack.push(local_ops);
1.209 paf 284: break;
285: }
1.322 misha 286: case OP::OP_WRITE_VALUE:
1.13 paf 287: {
1.297 paf 288: Value& value=stack.pop().value();
289: write_assign_lang(value);
1.86 paf 290: break;
291: }
1.322 misha 292: case OP::OP_WRITE_EXPR_RESULT:
1.108 paf 293: {
1.297 paf 294: Value& value=stack.pop().value();
295: write_no_lang(value.as_expr_result());
1.230 paf 296:
297: // must be after write(result) and
1.219 paf 298: // see OP_PREPARE_TO_EXPRESSION
299: wcontext->set_in_expression(false);
1.108 paf 300: break;
301: }
1.322 misha 302: case OP::OP_STRING__WRITE:
1.86 paf 303: {
1.297 paf 304: i.next(); // ignore origin
305: Value* value=i.next().value;
1.157 parser 306: #ifdef DEBUG_EXECUTE
1.297 paf 307: debug_printf(sapi_info, " \"%s\"", value->get_string()->cstr());
1.157 parser 308: #endif
1.297 paf 309: write_no_lang(*value->get_string());
1.13 paf 310: break;
1.14 paf 311: }
1.328 misha 312:
313: #ifdef OPTIMIZE_BYTECODE_GET_ELEMENT
314: case OP::OP_VALUE__GET_ELEMENT_OR_OPERATOR:
315: {
316: debug_origin=i.next().origin;
317: const String& name=*i.next().value->get_string(); debug_name=&name;
318:
319: #ifdef DEBUG_EXECUTE
320: debug_printf(sapi_info, " \"%s\" ", name.cstr());
321: #endif
1.330 misha 322: if(Method* method=main_class.get_method(name)){ // looking operator of that name FIRST
323: if(!method->junction_template) method->junction_template=new VJunction(main_class, method);
324: stack.push(*method->junction_template);
325: break;
326: }
327: Value& value=get_element(*rcontext, name);
1.328 misha 328: stack.push(value);
329: break;
330: }
331: #else
1.322 misha 332: case OP::OP_GET_ELEMENT_OR_OPERATOR:
1.215 paf 333: {
1.297 paf 334: const String& name=stack.pop().string(); debug_name=&name;
335: Value& ncontext=stack.pop().value();
1.330 misha 336: if(Method* method=main_class.get_method(name)){ // looking operator of that name FIRST
337: if(!method->junction_template) method->junction_template=new VJunction(main_class, method);
338: stack.push(*method->junction_template);
339: break;
340: }
341: Value& value=get_element(ncontext, name);
1.297 paf 342: stack.push(value);
1.215 paf 343: break;
344: }
1.328 misha 345: #endif
346:
1.322 misha 347: case OP::OP_GET_ELEMENT:
1.11 paf 348: {
1.297 paf 349: const String& name=stack.pop().string(); debug_name=&name;
350: Value& ncontext=stack.pop().value();
1.330 misha 351: Value& value=get_element(ncontext, name);
1.297 paf 352: stack.push(value);
1.17 paf 353: break;
354: }
355:
1.328 misha 356: #ifdef OPTIMIZE_BYTECODE_GET_ELEMENT
357: case OP::OP_VALUE__GET_ELEMENT:
358: {
359: debug_origin=i.next().origin;
360: const String& name=*i.next().value->get_string(); debug_name=&name;
361:
362: #ifdef DEBUG_EXECUTE
363: debug_printf(sapi_info, " \"%s\" ", name.cstr());
364: #endif
365:
1.330 misha 366: Value& value=get_element(*rcontext, name);
1.328 misha 367: stack.push(value);
368: break;
369: }
370: #endif
371:
372:
1.322 misha 373: case OP::OP_GET_ELEMENT__WRITE:
1.17 paf 374: {
1.297 paf 375: const String& name=stack.pop().string(); debug_name=&name;
376: Value& ncontext=stack.pop().value();
1.330 misha 377: Value& value=get_element(ncontext, name);
1.297 paf 378: write_assign_lang(value);
1.17 paf 379: break;
380: }
381:
1.328 misha 382: #ifdef OPTIMIZE_BYTECODE_GET_ELEMENT
383: case OP::OP_VALUE__GET_ELEMENT__WRITE:
384: {
385: debug_origin=i.next().origin;
386: const String& name=*i.next().value->get_string(); debug_name=&name;
387:
388: #ifdef DEBUG_EXECUTE
389: debug_printf(sapi_info, " \"%s\" ", name.cstr());
390: #endif
391:
1.330 misha 392: Value& value=get_element(*rcontext, name);
1.328 misha 393: write_assign_lang(value);
394: break;
395: }
396: #endif
1.32 paf 397:
1.322 misha 398: case OP::OP_OBJECT_POOL:
1.17 paf 399: {
1.297 paf 400: ArrayOperation& local_ops=*i.next().ops;
1.226 paf 401:
1.257 paf 402: WContext *saved_wcontext=wcontext;
1.297 paf 403: String::Language saved_lang=flang;
404: flang=String::L_PASS_APPENDED;
405: WWrapper local(0/*empty*/, wcontext);
1.226 paf 406: wcontext=&local;
407:
1.297 paf 408: execute(local_ops);
1.226 paf 409:
1.297 paf 410: stack.push(wcontext->result().as_value());
1.257 paf 411: flang=saved_lang;
412: wcontext=saved_wcontext;
1.13 paf 413: break;
1.15 paf 414: }
1.13 paf 415:
1.322 misha 416: case OP::OP_STRING_POOL:
1.49 paf 417: {
1.297 paf 418: ArrayOperation& local_ops=*i.next().ops;
1.226 paf 419:
1.257 paf 420: WContext *saved_wcontext=wcontext;
1.297 paf 421: WWrapper local(0 /*empty*/, wcontext);
1.226 paf 422: wcontext=&local;
423:
1.297 paf 424: execute(local_ops);
1.226 paf 425:
1.297 paf 426: Value* value;
1.49 paf 427: // from "$a $b" part of expression taking only string value,
428: // ignoring any other content of wcontext
1.297 paf 429: if(const String* string=wcontext->get_string())
430: value=new VString(*string);
1.80 paf 431: else
1.324 misha 432: value=VVoid::get();
1.297 paf 433: stack.push(*value);
434:
1.257 paf 435: wcontext=saved_wcontext;
1.49 paf 436: break;
437: }
438:
1.51 paf 439: // CALL
1.322 misha 440: case OP::OP_CURLY_CODE__STORE_PARAM:
441: case OP::OP_EXPR_CODE__STORE_PARAM:
1.28 paf 442: {
1.237 paf 443: // code
1.297 paf 444: ArrayOperation& local_ops=*i.next().ops;
1.237 paf 445: #ifdef DEBUG_EXECUTE
1.297 paf 446: debug_printf(sapi_info, " (%d)\n", local_ops.count());
447: debug_dump(sapi_info, 1, local_ops);
1.237 paf 448: #endif
449: // when they evaluate expression parameter,
450: // the object expression result
451: // does not need to be written into calling frame
452: // it must go into any expressions using that parameter
453: // hence, we zero junction.wcontext here, and later
454: // in .process we would test that field
455: // in decision "which wwrapper to use"
1.326 misha 456: VJunction& value=*new VJunction(
1.297 paf 457: get_self(), 0,
1.257 paf 458: method_frame,
1.237 paf 459: rcontext,
1.322 misha 460: opcode==OP::OP_EXPR_CODE__STORE_PARAM?0:wcontext,
1.312 paf 461: &local_ops);
1.326 misha 462: #ifdef USE_DESTRUCTORS
463: value.set_temporal(true);
464: #else
465: if (opcode!=OP::OP_EXPR_CODE__STORE_PARAM)
466: #endif
467: wcontext->attach_junction(&value);
1.237 paf 468: // store param
469: // this op is executed from CALL local_ops only, so can not check method_frame_to_fill==0
1.329 misha 470: stack.push(value);
1.29 paf 471: break;
472: }
473:
1.322 misha 474: case OP::OP_PREPARE_TO_CONSTRUCT_OBJECT:
1.186 parser 475: {
1.200 paf 476: wcontext->set_constructing(true);
1.186 parser 477: break;
478: }
1.219 paf 479:
1.322 misha 480: case OP::OP_PREPARE_TO_EXPRESSION:
1.219 paf 481: {
482: wcontext->set_in_expression(true);
483: break;
484: }
485:
1.322 misha 486: case OP::OP_CALL:
487: case OP::OP_CALL__WRITE:
1.29 paf 488: {
1.297 paf 489: //is_debug_junction=true;
490: ArrayOperation* local_ops=i.next().ops;
1.157 parser 491: #ifdef DEBUG_EXECUTE
1.297 paf 492: debug_printf(sapi_info, " (%d)\n", local_ops?local_ops->count():0);
493: if(local_ops)
494: debug_dump(sapi_info, 1, *local_ops);
1.237 paf 495:
1.297 paf 496: debug_printf(sapi_info, "->\n");
1.157 parser 497: #endif
1.297 paf 498: Value& value=stack.pop().value();
1.237 paf 499:
1.297 paf 500: Junction* junction=value.get_junction();
501: if(!junction) {
502: if(value.is("void"))
1.316 misha 503: throw Exception(PARSER_RUNTIME,
1.297 paf 504: 0,
505: "undefined method");
506: else
1.316 misha 507: throw Exception(PARSER_RUNTIME,
1.297 paf 508: 0,
509: "is '%s', not a method or junction, can not call it",
510: value.type());
511: }
1.282 paf 512: /* no check needed, code compiled the way that that's impossible
1.276 paf 513: // check:
514: // that this is method-junction, not a code-junction
1.278 paf 515: // [disabling these contstructions:]
516: // $junction{code}
517: // ^junction[]
1.276 paf 518: if(!junction->method)
1.316 misha 519: throw Exception(PARSER_RUNTIME,
1.297 paf 520: "is '%s', it is code junction, can not call it",
521: value.type());
1.282 paf 522: */
1.237 paf 523:
1.321 misha 524: VMethodFrame frame(*junction, method_frame);
1.330 misha 525: WContext* result_wcontext;
526:
1.321 misha 527: if(local_ops){ // store param code goes here
1.329 misha 528: size_t first = stack.top_index();
1.321 misha 529: execute(*local_ops);
1.329 misha 530: frame.store_params((Value**)stack.ptr(first), stack.top_index()-first);
1.330 misha 531: result_wcontext=op_call(frame);
1.329 misha 532: stack.set_top_index(first);
1.330 misha 533: } else {
534: frame.empty_params();
535: result_wcontext=op_call(frame);
1.321 misha 536: }
1.330 misha 537:
1.322 misha 538: if(opcode==OP::OP_CALL__WRITE) {
1.321 misha 539: write_assign_lang(result_wcontext->result());
540: } else { // OP_CALL
541: stack.push(result_wcontext->result().as_value());
1.237 paf 542: }
1.220 paf 543:
1.157 parser 544: #ifdef DEBUG_EXECUTE
1.297 paf 545: debug_printf(sapi_info, "<-returned");
1.157 parser 546: #endif
1.297 paf 547: //is_debug_junction=false;
1.327 misha 548:
549: if(get_skip())
550: return;
551: if(get_interrupted()) {
552: set_interrupted(false);
553: throw Exception("parser.interrupted",
554: 0,
555: "execution stopped");
556: }
1.49 paf 557: break;
558: }
559:
1.55 paf 560: // expression ops: unary
1.322 misha 561: case OP::OP_NEG:
1.55 paf 562: {
1.297 paf 563: Value& a=stack.pop().value();
564: Value& value=*new VDouble(-a.as_double());
565: stack.push(value);
1.55 paf 566: break;
567: }
1.322 misha 568: case OP::OP_INV:
1.55 paf 569: {
1.297 paf 570: Value& a=stack.pop().value();
571: Value& value=*new VDouble(~a.as_int());
572: stack.push(value);
1.55 paf 573: break;
574: }
1.322 misha 575: case OP::OP_NOT:
1.55 paf 576: {
1.297 paf 577: Value& a=stack.pop().value();
1.327 misha 578: Value& value=VBool::get(!a.as_bool());
1.297 paf 579: stack.push(value);
1.55 paf 580: break;
581: }
1.322 misha 582: case OP::OP_DEF:
1.62 paf 583: {
1.297 paf 584: Value& a=stack.pop().value();
1.327 misha 585: Value& value=VBool::get(a.is_defined());
1.297 paf 586: stack.push(value);
1.62 paf 587: break;
588: }
1.322 misha 589: case OP::OP_IN:
1.62 paf 590: {
1.297 paf 591: Value& a=stack.pop().value();
592: const String& path=a.as_string();
1.327 misha 593: Value& value=VBool::get(request_info.uri && *request_info.uri && path.this_starts(request_info.uri));
1.297 paf 594: stack.push(value);
1.62 paf 595: break;
596: }
1.322 misha 597: case OP::OP_FEXISTS:
1.62 paf 598: {
1.297 paf 599: Value& a=stack.pop().value();
1.327 misha 600: Value& value=VBool::get(file_exist(absolute(a.as_string())));
1.297 paf 601: stack.push(value);
1.148 paf 602: break;
603: }
1.322 misha 604: case OP::OP_DEXISTS:
1.148 paf 605: {
1.297 paf 606: Value& a=stack.pop().value();
1.327 misha 607: Value& value=VBool::get(dir_exists(absolute(a.as_string())));
1.297 paf 608: stack.push(value);
1.62 paf 609: break;
610: }
1.55 paf 611:
612: // expression ops: binary
1.322 misha 613: case OP::OP_SUB:
1.53 paf 614: {
1.297 paf 615: Value& b=stack.pop().value(); Value& a=stack.pop().value();
616: Value& value=*new VDouble(a.as_double() - b.as_double());
617: stack.push(value);
1.53 paf 618: break;
619: }
1.322 misha 620: case OP::OP_ADD:
1.53 paf 621: {
1.297 paf 622: Value& b=stack.pop().value(); Value& a=stack.pop().value();
623: Value& value=*new VDouble(a.as_double() + b.as_double());
624: stack.push(value);
1.53 paf 625: break;
626: }
1.322 misha 627: case OP::OP_MUL:
1.49 paf 628: {
1.297 paf 629: Value& b=stack.pop().value(); Value& a=stack.pop().value();
630: Value& value=*new VDouble(a.as_double() * b.as_double());
631: stack.push(value);
1.53 paf 632: break;
633: }
1.322 misha 634: case OP::OP_DIV:
1.53 paf 635: {
1.297 paf 636: Value& b=stack.pop().value(); Value& a=stack.pop().value();
1.170 parser 637:
1.297 paf 638: double a_double=a.as_double();
639: double b_double=b.as_double();
1.170 parser 640:
1.171 parser 641: if(b_double == 0) {
1.297 paf 642: //const String* problem_source=b.as_string();
1.223 paf 643: throw Exception("number.zerodivision",
1.297 paf 644: 0, //problem_source,
1.170 parser 645: "Division by zero");
1.171 parser 646: }
1.170 parser 647:
1.297 paf 648: Value& value=*new VDouble(a_double / b_double);
649: stack.push(value);
1.54 paf 650: break;
651: }
1.322 misha 652: case OP::OP_MOD:
1.55 paf 653: {
1.297 paf 654: Value& b=stack.pop().value(); Value& a=stack.pop().value();
1.170 parser 655:
1.297 paf 656: double a_double=a.as_double();
657: double b_double=b.as_double();
1.170 parser 658:
1.173 parser 659: if(b_double == 0) {
1.297 paf 660: //const String* problem_source=b.as_string();
1.223 paf 661: throw Exception("number.zerodivision",
1.297 paf 662: 0, //problem_source,
1.170 parser 663: "Modulus by zero");
1.171 parser 664: }
1.170 parser 665:
1.297 paf 666: Value& value=*new VDouble(fmod(a_double, b_double));
667: stack.push(value);
1.201 paf 668: break;
669: }
1.322 misha 670: case OP::OP_INTDIV:
1.201 paf 671: {
1.297 paf 672: Value& b=stack.pop().value(); Value& a=stack.pop().value();
1.201 paf 673:
1.297 paf 674: int a_int=a.as_int();
675: int b_int=b.as_int();
1.201 paf 676:
677: if(b_int == 0) {
1.297 paf 678: //const String* problem_source=b.as_string();
1.223 paf 679: throw Exception("number.zerodivision",
1.297 paf 680: 0, //problem_source,
1.201 paf 681: "Division by zero");
682: }
683:
1.297 paf 684: Value& value=*new VInt(a_int / b_int);
685: stack.push(value);
1.55 paf 686: break;
687: }
1.322 misha 688: case OP::OP_BIN_SL:
1.274 paf 689: {
1.297 paf 690: Value& b=stack.pop().value(); Value& a=stack.pop().value();
691: Value& value=*new VInt(
692: a.as_int() <<
693: b.as_int());
694: stack.push(value);
1.274 paf 695: break;
696: }
1.322 misha 697: case OP::OP_BIN_SR:
1.274 paf 698: {
1.297 paf 699: Value& b=stack.pop().value(); Value& a=stack.pop().value();
700: Value& value=*new VInt(
701: a.as_int() >>
702: b.as_int());
703: stack.push(value);
1.274 paf 704: break;
705: }
1.322 misha 706: case OP::OP_BIN_AND:
1.54 paf 707: {
1.297 paf 708: Value& b=stack.pop().value(); Value& a=stack.pop().value();
709: Value& value=*new VInt(
710: a.as_int() &
711: b.as_int());
712: stack.push(value);
1.54 paf 713: break;
714: }
1.322 misha 715: case OP::OP_BIN_OR:
1.54 paf 716: {
1.297 paf 717: Value& b=stack.pop().value(); Value& a=stack.pop().value();
718: Value& value=*new VInt(
719: a.as_int() |
720: b.as_int());
721: stack.push(value);
1.55 paf 722: break;
723: }
1.322 misha 724: case OP::OP_BIN_XOR:
1.56 paf 725: {
1.297 paf 726: Value& b=stack.pop().value(); Value& a=stack.pop().value();
727: Value& value=*new VInt(
728: a.as_int() ^
729: b.as_int());
730: stack.push(value);
1.56 paf 731: break;
732: }
1.322 misha 733: case OP::OP_LOG_AND:
1.55 paf 734: {
1.297 paf 735: ArrayOperation& local_ops=stack.pop().ops(); Value& a=stack.pop().value();
1.263 paf 736: bool result;
1.297 paf 737: if(a.as_bool()) {
738: execute(local_ops);
739: Value& b=stack.pop().value();
740: result=b.as_bool();
1.209 paf 741: } else
1.263 paf 742: result=false;
1.327 misha 743: Value& value=VBool::get(result);
1.297 paf 744: stack.push(value);
1.55 paf 745: break;
746: }
1.322 misha 747: case OP::OP_LOG_OR:
1.55 paf 748: {
1.297 paf 749: ArrayOperation& local_ops=stack.pop().ops(); Value& a=stack.pop().value();
1.263 paf 750: bool result;
1.297 paf 751: if(a.as_bool())
1.263 paf 752: result=true;
1.209 paf 753: else {
1.297 paf 754: execute(local_ops);
755: Value& b=stack.pop().value();
756: result=b.as_bool();
1.209 paf 757: }
1.327 misha 758: Value& value=VBool::get(result);
1.297 paf 759: stack.push(value);
1.56 paf 760: break;
761: }
1.322 misha 762: case OP::OP_LOG_XOR:
1.56 paf 763: {
1.297 paf 764: Value& b=stack.pop().value(); Value& a=stack.pop().value();
1.327 misha 765: Value& value=VBool::get(a.as_bool() ^ b.as_bool());
1.297 paf 766: stack.push(value);
1.55 paf 767: break;
768: }
1.322 misha 769: case OP::OP_NUM_LT:
1.55 paf 770: {
1.297 paf 771: volatile double b_double=stack.pop().value().as_double();
772: volatile double a_double=stack.pop().value().as_double();
1.327 misha 773: Value& value=VBool::get(a_double<b_double);
1.297 paf 774: stack.push(value);
1.55 paf 775: break;
776: }
1.322 misha 777: case OP::OP_NUM_GT:
1.55 paf 778: {
1.297 paf 779: volatile double b_double=stack.pop().value().as_double();
780: volatile double a_double=stack.pop().value().as_double();
1.327 misha 781: Value& value=VBool::get(a_double>b_double);
1.297 paf 782: stack.push(value);
1.55 paf 783: break;
784: }
1.322 misha 785: case OP::OP_NUM_LE:
1.55 paf 786: {
1.297 paf 787: volatile double b_double=stack.pop().value().as_double();
788: volatile double a_double=stack.pop().value().as_double();
1.327 misha 789: Value& value=VBool::get(a_double<=b_double);
1.297 paf 790: stack.push(value);
1.55 paf 791: break;
792: }
1.322 misha 793: case OP::OP_NUM_GE:
1.55 paf 794: {
1.297 paf 795: volatile double b_double=stack.pop().value().as_double();
796: volatile double a_double=stack.pop().value().as_double();
1.327 misha 797: Value& value=VBool::get(a_double>=b_double);
1.297 paf 798: stack.push(value);
1.55 paf 799: break;
800: }
1.322 misha 801: case OP::OP_NUM_EQ:
1.55 paf 802: {
1.297 paf 803: volatile double b_double=stack.pop().value().as_double();
804: volatile double a_double=stack.pop().value().as_double();
1.327 misha 805: Value& value=VBool::get(a_double==b_double);
1.297 paf 806: stack.push(value);
1.55 paf 807: break;
808: }
1.322 misha 809: case OP::OP_NUM_NE:
1.55 paf 810: {
1.297 paf 811: volatile double b_double=stack.pop().value().as_double();
812: volatile double a_double=stack.pop().value().as_double();
1.327 misha 813: Value& value=VBool::get(a_double!=b_double);
1.297 paf 814: stack.push(value);
1.54 paf 815: break;
816: }
1.322 misha 817: case OP::OP_STR_LT:
1.58 paf 818: {
1.297 paf 819: Value& b=stack.pop().value(); Value& a=stack.pop().value();
1.327 misha 820: Value& value=VBool::get(a.as_string() < b.as_string());
1.297 paf 821: stack.push(value);
1.58 paf 822: break;
823: }
1.322 misha 824: case OP::OP_STR_GT:
1.58 paf 825: {
1.297 paf 826: Value& b=stack.pop().value(); Value& a=stack.pop().value();
1.327 misha 827: Value& value=VBool::get(a.as_string() > b.as_string());
1.297 paf 828: stack.push(value);
1.58 paf 829: break;
830: }
1.322 misha 831: case OP::OP_STR_LE:
1.58 paf 832: {
1.297 paf 833: Value& b=stack.pop().value(); Value& a=stack.pop().value();
1.327 misha 834: Value& value=VBool::get(a.as_string() <= b.as_string());
1.297 paf 835: stack.push(value);
1.58 paf 836: break;
837: }
1.322 misha 838: case OP::OP_STR_GE:
1.54 paf 839: {
1.297 paf 840: Value& b=stack.pop().value(); Value& a=stack.pop().value();
1.327 misha 841: Value& value=VBool::get(a.as_string() >= b.as_string());
1.297 paf 842: stack.push(value);
1.58 paf 843: break;
844: }
1.322 misha 845: case OP::OP_STR_EQ:
1.58 paf 846: {
1.297 paf 847: Value& b=stack.pop().value(); Value& a=stack.pop().value();
1.327 misha 848: Value& value=VBool::get(a.as_string() == b.as_string());
1.297 paf 849: stack.push(value);
1.58 paf 850: break;
851: }
1.322 misha 852: case OP::OP_STR_NE:
1.58 paf 853: {
1.297 paf 854: Value& b=stack.pop().value(); Value& a=stack.pop().value();
1.327 misha 855: Value& value=VBool::get(a.as_string() != b.as_string());
1.297 paf 856: stack.push(value);
1.103 paf 857: break;
858: }
1.322 misha 859: case OP::OP_IS:
1.103 paf 860: {
1.297 paf 861: Value& b=stack.pop().value(); Value& a=stack.pop().value();
1.327 misha 862: Value& value=VBool::get(a.is(b.as_string().cstr()));
1.297 paf 863: stack.push(value);
1.28 paf 864: break;
865: }
866:
1.11 paf 867: default:
1.223 paf 868: throw Exception(0,
1.67 paf 869: 0,
1.297 paf 870: "invalid opcode %d", opcode);
1.11 paf 871: }
872: }
1.306 paf 873: } catch(const Exception&) {
1.297 paf 874: // record it to stack trace
1.301 paf 875: if(debug_name)
876: exception_trace.push(Trace(debug_name, debug_origin));
1.297 paf 877: rethrow;
878: }
1.1 paf 879: }
1.17 paf 880:
1.330 misha 881: #define SAVE_CONTEXT \
882: VMethodFrame *saved_method_frame=method_frame; \
883: Value* saved_rcontext=rcontext; \
884: WContext *saved_wcontext=wcontext;
885:
886: #define RESTORE_CONTEXT \
887: wcontext=saved_wcontext; \
888: rcontext=saved_rcontext; \
889: method_frame=saved_method_frame;
890:
1.319 misha 891: WContext* Request::op_call(VMethodFrame& frame){
1.330 misha 892: SAVE_CONTEXT
1.319 misha 893:
894: VStateless_class& called_class=*frame.junction.self.get_class();
895: Value* new_self;
896: if(wcontext->get_constructing()) {
897: wcontext->set_constructing(false);
898: new_self=&get_self();
899: if(frame.junction.method->call_type!=Method::CT_STATIC) {
900: // this is a constructor call
901: HashStringValue& new_object_fields=*new HashStringValue();
902: if(Value* value=called_class.create_new_value(fpool, new_object_fields)) {
903: // some stateless_class creatable derivates
904: new_self=value;
905: } else
906: throw Exception(PARSER_RUNTIME,
907: 0, //&frame.name(),
908: "is not a constructor, system class '%s' can be constructed only implicitly",
909: called_class.name().cstr());
910:
911: frame.write(*new_self,
912: String::L_CLEAN // not used, always an object, not string
913: );
914: } else
915: throw Exception(PARSER_RUNTIME,
916: 0, //&frame.name(),
917: "method is static and can not be used as constructor");
918: } else
919: new_self=&frame.junction.self;
920:
921: frame.set_self(*new_self);
922:
923: // see OP_PREPARE_TO_EXPRESSION
924: frame.set_in_expression(wcontext->get_in_expression());
925:
926: rcontext=wcontext=&frame;
927: {
928: const Method& method=*frame.junction.method;
929: Method::Call_type call_type=&called_class==new_self ? Method::CT_STATIC : Method::CT_DYNAMIC;
930: if(
931: method.call_type==Method::CT_ANY ||
932: method.call_type==call_type) { // allowed call type?
933: method_frame=&frame;
934: if(method.native_code) { // native code?
935: method.check_actual_numbered_params(
936: frame.junction.self,
937: /*frame.name(), */frame.numbered_params());
938: method.native_code(
939: *this,
940: *frame.numbered_params()); // execute it
941: } else // parser code, execute it
942: recoursion_checked_execute(*method.parser_code);
943: } else
944: throw Exception(PARSER_RUNTIME,
945: 0, //&frame.name(),
946: "is not allowed to be called %s",
947: call_type==Method::CT_STATIC?"statically":"dynamically");
948: }
949:
950: WContext *result_wcontext=wcontext;
951: // StringOrValue result=wcontext->result();
952:
1.330 misha 953: RESTORE_CONTEXT
1.319 misha 954:
955: return result_wcontext;
956: }
957:
958:
1.292 paf 959: /**
960: @todo cache|prepare junctions
961: @bug ^superbase:method would dynamically call ^base:method if there is any
962: */
1.330 misha 963: Value& Request::get_element(Value& ncontext, const String& name) {
964: if(!wcontext->get_constructing() // not constructing
965: && wcontext->get_somebody_entered_some_class() ) // ^class:method
1.297 paf 966: if(VStateless_class *called_class=ncontext.get_class())
1.249 paf 967: if(VStateless_class *read_class=rcontext->get_class())
968: if(read_class->derived_from(*called_class)) // current derived from called
1.297 paf 969: if(Value* base=get_self().base()) { // doing DYNAMIC call
1.330 misha 970: Temp_derived temp_derived(*base, 0); // temporarily prevent go-back-down virtual calls
971: Value *value=base->get_element(name, *base, true); // virtual-up lookup starting from parent
972: return *(value ? &process_to_value(*value) : VVoid::get());
1.249 paf 973: }
1.330 misha 974:
975: Value* value=ncontext.get_element(name, ncontext, true);
1.291 paf 976:
977: if(value && wcontext->get_constructing())
1.330 misha 978: if(Junction* junction=value->get_junction())
1.297 paf 979: if(junction->self.get_class()!=&ncontext)
1.316 misha 980: throw Exception(PARSER_RUNTIME,
1.291 paf 981: &name,
1.297 paf 982: "constructor must be declared in class '%s'",
983: ncontext.get_class()->name_cstr());
1.63 paf 984:
1.330 misha 985: return *(value ? &process_to_value(*value) : VVoid::get());
1.309 paf 986: }
987:
1.329 misha 988: void Request::put_element(Value& ncontext, const String& name, Value* value) {
1.309 paf 989: // put_element can return property-setting-junction
1.329 misha 990: if(const VJunction* vjunction=ncontext.put_element(ncontext, name, value, false))
1.312 paf 991: if(vjunction!=PUT_ELEMENT_REPLACED_ELEMENT) {
1.309 paf 992: // process it
1.329 misha 993: VMethodFrame frame(vjunction->junction(), method_frame/*caller*/);
994: int param_count=frame.method_params_count();
995:
1.309 paf 996: if(param_count!=1)
1.316 misha 997: throw Exception(PARSER_RUNTIME,
1.309 paf 998: 0,
999: "setter method must have ONE parameter (has %d parameters)", param_count);
1000:
1.329 misha 1001: frame.store_params(&value, 1);
1.309 paf 1002: frame.set_self(frame.junction.self);
1003:
1.330 misha 1004: SAVE_CONTEXT
1.309 paf 1005:
1006: rcontext=wcontext=&frame;
1007: method_frame=&frame;
1008:
1.311 paf 1009: // prevent non-string writes for better error reporting [setters are not expected to return anything]
1.309 paf 1010: wcontext->write(*method_frame);
1011:
1012: recoursion_checked_execute(*frame.junction.method->parser_code); // parser code, execute it
1013: // we don't need it StringOrValue result=wcontext->result();
1014:
1.330 misha 1015: RESTORE_CONTEXT
1.309 paf 1016: }
1.34 paf 1017: }
1.70 paf 1018:
1.162 parser 1019: /** @param intercept_string
1.116 paf 1020: - true:
1021: they want result=string value,
1022: possible object result goes to wcontext
1023: - false:
1024: they want any result[string|object]
1025: nothing goes to wcontext.
1.125 paf 1026: used in @c (expression) params evaluation
1.224 paf 1027:
1028: using the fact it's either string_ or value_ result requested to speed up checkes
1.116 paf 1029: */
1.229 paf 1030: StringOrValue Request::process(Value& input_value, bool intercept_string) {
1.297 paf 1031: Junction* junction=input_value.get_junction();
1.307 paf 1032: if(junction) {
1033: if(junction->is_getter) { // is it a getter-junction?
1.329 misha 1034: VMethodFrame frame(*junction, method_frame/*caller*/);
1035: int param_count=frame.method_params_count();
1036:
1.331 ! misha 1037: if(param_count){
! 1038: if(junction->auto_name){ // default getter
! 1039: if(param_count==1){
! 1040: Value *param=new VString(*junction->auto_name);
! 1041: frame.store_params(¶m, 1);
! 1042: } else
! 1043: throw Exception(PARSER_RUNTIME,
! 1044: 0,
! 1045: "default getter method can't have more then 1 parameter (has %d parameters)", param_count);
! 1046: } else
1.320 misha 1047: throw Exception(PARSER_RUNTIME,
1048: 0,
1.331 ! misha 1049: "getter method must have no parameters (has %d parameters)", param_count);
! 1050: } // no need for else frame.empty_params()
1.320 misha 1051:
1.307 paf 1052: frame.set_self(frame.junction.self);
1053:
1.330 misha 1054: SAVE_CONTEXT
1.307 paf 1055:
1056: rcontext=wcontext=&frame;
1057: method_frame=&frame;
1058:
1059: recoursion_checked_execute(*frame.junction.method->parser_code); // parser code, execute it
1060: StringOrValue result=wcontext->result();
1061:
1.330 misha 1062: RESTORE_CONTEXT
1.307 paf 1063:
1064: return result;
1065: }
1066:
1067: if(junction->code) { // is it a code-junction?
1068: // process it
1069: StringOrValue result;
1.157 parser 1070: #ifdef DEBUG_EXECUTE
1.307 paf 1071: debug_printf(sapi_info, "ja->\n");
1.157 parser 1072: #endif
1.238 paf 1073:
1.307 paf 1074: if(!junction->method_frame)
1.316 misha 1075: throw Exception(PARSER_RUNTIME,
1.240 paf 1076: 0,
1077: "junction used outside of context");
1078:
1.330 misha 1079: SAVE_CONTEXT
1.307 paf 1080:
1081: method_frame=junction->method_frame;
1082: rcontext=junction->rcontext;
1083:
1084: // for expression method params
1085: // wcontext is set 0
1086: // using the fact in decision "which wwrapper to use"
1087: bool using_code_frame=intercept_string && junction->wcontext;
1088: if(using_code_frame) {
1.318 misha 1089: // almost plain wwrapper about junction wcontext
1090:
1091: VCodeFrame local(*junction->wcontext);
1.307 paf 1092: wcontext=&local;
1093:
1094: // execute it
1095: recoursion_checked_execute(*junction->code);
1096:
1097: // CodeFrame soul:
1.318 misha 1098: result=wcontext->result();
1.307 paf 1099: } else {
1100: // plain wwrapper
1101: WWrapper local(0/*empty*/, wcontext);
1102: wcontext=&local;
1103:
1104: // execute it
1105: recoursion_checked_execute(*junction->code);
1106:
1107: result=wcontext->result();
1108: }
1109:
1.330 misha 1110: RESTORE_CONTEXT
1.207 paf 1111:
1.157 parser 1112: #ifdef DEBUG_EXECUTE
1.307 paf 1113: debug_printf(sapi_info, "<-ja returned");
1.157 parser 1114: #endif
1.307 paf 1115: return result;
1116: }
1117:
1118: // it is then method-junction, do not explode it
1119: // just return it as we do for usual objects
1120: }
1121:
1122: return input_value;
1.85 paf 1123: }
1124:
1.298 paf 1125: StringOrValue Request::execute_method(VMethodFrame& amethod_frame, const Method& method) {
1.330 misha 1126: SAVE_CONTEXT
1.99 paf 1127:
1128: // initialize contexts
1.286 paf 1129: rcontext=wcontext=method_frame=&amethod_frame;
1.99 paf 1130:
1131: // execute!
1132: execute(*method.parser_code);
1133:
1134: // result
1.298 paf 1135: StringOrValue result=wcontext->result();
1.208 paf 1136:
1.330 misha 1137: RESTORE_CONTEXT
1.242 paf 1138:
1139: // return
1140: return result;
1.208 paf 1141: }
1142:
1.297 paf 1143: const String* Request::execute_method(Value& aself,
1.329 misha 1144: const Method& method, Value* optional_param,
1145: bool do_return_string) {
1.317 misha 1146:
1.330 misha 1147: SAVE_CONTEXT
1.208 paf 1148:
1.307 paf 1149: Junction local_junction(aself, &method);
1.321 misha 1150: VMethodFrame local_frame(local_junction, method_frame/*caller*/);
1.329 misha 1151: if(optional_param && local_frame.method_params_count()>0) {
1152: local_frame.store_params(&optional_param, 1);
1.330 misha 1153: } else {
1154: local_frame.empty_params();
1.242 paf 1155: }
1.285 paf 1156: local_frame.set_self(aself);
1.257 paf 1157: rcontext=wcontext=method_frame=&local_frame;
1.246 paf 1158:
1159: // prevent non-string writes for better error reporting
1.297 paf 1160: if(do_return_string)
1.246 paf 1161: wcontext->write(local_frame);
1.208 paf 1162:
1163: // execute!
1164: execute(*method.parser_code);
1165:
1166: // result
1.297 paf 1167: const String* result=0;
1168: if(do_return_string)
1169: result=&wcontext->result().as_string();
1.99 paf 1170:
1.330 misha 1171: RESTORE_CONTEXT
1.297 paf 1172:
1173: return result;
1.242 paf 1174: }
1175:
1.297 paf 1176: Request::Execute_nonvirtual_method_result
1177: Request::execute_nonvirtual_method(VStateless_class& aclass,
1.330 misha 1178: const String& method_name,
1179: VString* optional_param,
1180: bool do_return_string) {
1.297 paf 1181: Execute_nonvirtual_method_result result;
1182: result.method=aclass.get_method(method_name);
1183: if(result.method)
1.317 misha 1184: result.string=execute_method(aclass, *result.method, optional_param, do_return_string);
1.297 paf 1185: return result;
1.99 paf 1186: }
1187:
1.297 paf 1188: const String* Request::execute_virtual_method(Value& aself,
1.330 misha 1189: const String& method_name) {
1.297 paf 1190: if(Value* value=aself.get_element(method_name, aself, false))
1191: if(Junction* junction=value->get_junction())
1192: if(const Method *method=junction->method)
1193: return execute_method(aself, *method, 0/*no params*/, true);
1.188 parser 1194:
1.176 parser 1195: return 0;
1196: }