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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:
1.333 ! misha 8: static const char * const IDENT_EXECUTE_C="$Date: 2009-05-04 09:26:00 $";
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
1.329 misha 469: stack.push(value);
1.29 paf 470: break;
471: }
472:
1.322 misha 473: case OP::OP_PREPARE_TO_CONSTRUCT_OBJECT:
1.186 parser 474: {
1.200 paf 475: wcontext->set_constructing(true);
1.186 parser 476: break;
477: }
1.219 paf 478:
1.322 misha 479: case OP::OP_PREPARE_TO_EXPRESSION:
1.219 paf 480: {
481: wcontext->set_in_expression(true);
482: break;
483: }
484:
1.322 misha 485: case OP::OP_CALL:
1.29 paf 486: {
1.297 paf 487: ArrayOperation* local_ops=i.next().ops;
1.157 parser 488: #ifdef DEBUG_EXECUTE
1.297 paf 489: debug_printf(sapi_info, " (%d)\n", local_ops?local_ops->count():0);
490: if(local_ops)
491: debug_dump(sapi_info, 1, *local_ops);
1.237 paf 492:
1.297 paf 493: debug_printf(sapi_info, "->\n");
1.157 parser 494: #endif
1.297 paf 495: Value& value=stack.pop().value();
1.237 paf 496:
1.297 paf 497: Junction* junction=value.get_junction();
498: if(!junction) {
499: if(value.is("void"))
1.316 misha 500: throw Exception(PARSER_RUNTIME,
1.297 paf 501: 0,
502: "undefined method");
503: else
1.316 misha 504: throw Exception(PARSER_RUNTIME,
1.297 paf 505: 0,
506: "is '%s', not a method or junction, can not call it",
507: value.type());
508: }
1.237 paf 509:
1.321 misha 510: VMethodFrame frame(*junction, method_frame);
1.330 misha 511:
1.321 misha 512: if(local_ops){ // store param code goes here
1.329 misha 513: size_t first = stack.top_index();
1.321 misha 514: execute(*local_ops);
1.329 misha 515: frame.store_params((Value**)stack.ptr(first), stack.top_index()-first);
1.332 misha 516: op_call(frame);
1.329 misha 517: stack.set_top_index(first);
1.330 misha 518: } else {
519: frame.empty_params();
1.332 misha 520: op_call(frame);
1.321 misha 521: }
1.330 misha 522:
1.332 misha 523: stack.push(frame.result().as_value());
524:
525: #ifdef DEBUG_EXECUTE
526: debug_printf(sapi_info, "<-returned");
527: #endif
528: if(get_skip())
529: return;
530: if(get_interrupted()) {
531: set_interrupted(false);
532: throw Exception("parser.interrupted",
533: 0,
534: "execution stopped");
1.237 paf 535: }
1.332 misha 536: break;
537: }
1.220 paf 538:
1.332 misha 539: case OP::OP_CALL__WRITE:
540: {
541: ArrayOperation* local_ops=i.next().ops;
542: #ifdef DEBUG_EXECUTE
543: debug_printf(sapi_info, " (%d)\n", local_ops?local_ops->count():0);
544: if(local_ops)
545: debug_dump(sapi_info, 1, *local_ops);
546:
547: debug_printf(sapi_info, "->\n");
548: #endif
549: Value& value=stack.pop().value();
550:
551: Junction* junction=value.get_junction();
552: if(!junction) {
553: if(value.is("void"))
554: throw Exception(PARSER_RUNTIME,
555: 0,
556: "undefined method");
557: else
558: throw Exception(PARSER_RUNTIME,
559: 0,
560: "is '%s', not a method or junction, can not call it",
561: value.type());
562: }
563:
564: #ifdef OPTIMIZE_CALL
565: const Method& method=*junction->method;
566: if (!wcontext->get_constructing() && method.call_optimization==Method::CO_WITHOUT_FRAME){
567: if(local_ops){ // store param code goes here
568: size_t first = stack.top_index();
569: execute(*local_ops);
570:
571: MethodParams method_params;
572: method_params.store_params((Value**)stack.ptr(first), stack.top_index()-first);
573: method.check_actual_numbered_params(junction->self, &method_params);
574: method.native_code(*this, method_params); // execute it
575:
576: stack.set_top_index(first);
577: } else {
578: MethodParams method_params;
579: method.check_actual_numbered_params(junction->self, &method_params);
580: method.native_code(*this, method_params); // execute it
581: }
582: } else if (!wcontext->get_constructing() && method.call_optimization==Method::CO_WITHOUT_WCONTEXT){
583: VMethodFrame frame(*junction, method_frame);
584: if(local_ops){ // store param code goes here
585: size_t first = stack.top_index();
586: execute(*local_ops);
587:
588: frame.store_params((Value**)stack.ptr(first), stack.top_index()-first);
589: op_call_write(frame);
590:
591: stack.set_top_index(first);
592: } else {
593: frame.empty_params();
594: op_call_write(frame);
595: }
596: } else
597: #endif // OPTIMIZE_CALL
598: {
599: VMethodFrame frame(*junction, method_frame);
600: if(local_ops){ // store param code goes here
601: size_t first = stack.top_index();
602: execute(*local_ops);
603:
604: frame.store_params((Value**)stack.ptr(first), stack.top_index()-first);
605: op_call(frame);
606:
607: stack.set_top_index(first);
608: } else {
609: frame.empty_params();
610: op_call(frame);
611: }
612: write_assign_lang(frame.result());
613: }
1.157 parser 614: #ifdef DEBUG_EXECUTE
1.297 paf 615: debug_printf(sapi_info, "<-returned");
1.157 parser 616: #endif
1.327 misha 617:
618: if(get_skip())
619: return;
620: if(get_interrupted()) {
621: set_interrupted(false);
622: throw Exception("parser.interrupted",
623: 0,
624: "execution stopped");
625: }
1.49 paf 626: break;
627: }
628:
1.55 paf 629: // expression ops: unary
1.322 misha 630: case OP::OP_NEG:
1.55 paf 631: {
1.297 paf 632: Value& a=stack.pop().value();
633: Value& value=*new VDouble(-a.as_double());
634: stack.push(value);
1.55 paf 635: break;
636: }
1.322 misha 637: case OP::OP_INV:
1.55 paf 638: {
1.297 paf 639: Value& a=stack.pop().value();
640: Value& value=*new VDouble(~a.as_int());
641: stack.push(value);
1.55 paf 642: break;
643: }
1.322 misha 644: case OP::OP_NOT:
1.55 paf 645: {
1.297 paf 646: Value& a=stack.pop().value();
1.327 misha 647: Value& value=VBool::get(!a.as_bool());
1.297 paf 648: stack.push(value);
1.55 paf 649: break;
650: }
1.322 misha 651: case OP::OP_DEF:
1.62 paf 652: {
1.297 paf 653: Value& a=stack.pop().value();
1.327 misha 654: Value& value=VBool::get(a.is_defined());
1.297 paf 655: stack.push(value);
1.62 paf 656: break;
657: }
1.322 misha 658: case OP::OP_IN:
1.62 paf 659: {
1.297 paf 660: Value& a=stack.pop().value();
661: const String& path=a.as_string();
1.327 misha 662: Value& value=VBool::get(request_info.uri && *request_info.uri && path.this_starts(request_info.uri));
1.297 paf 663: stack.push(value);
1.62 paf 664: break;
665: }
1.322 misha 666: case OP::OP_FEXISTS:
1.62 paf 667: {
1.297 paf 668: Value& a=stack.pop().value();
1.327 misha 669: Value& value=VBool::get(file_exist(absolute(a.as_string())));
1.297 paf 670: stack.push(value);
1.148 paf 671: break;
672: }
1.322 misha 673: case OP::OP_DEXISTS:
1.148 paf 674: {
1.297 paf 675: Value& a=stack.pop().value();
1.327 misha 676: Value& value=VBool::get(dir_exists(absolute(a.as_string())));
1.297 paf 677: stack.push(value);
1.62 paf 678: break;
679: }
1.55 paf 680:
681: // expression ops: binary
1.322 misha 682: case OP::OP_SUB:
1.53 paf 683: {
1.297 paf 684: Value& b=stack.pop().value(); Value& a=stack.pop().value();
685: Value& value=*new VDouble(a.as_double() - b.as_double());
686: stack.push(value);
1.53 paf 687: break;
688: }
1.322 misha 689: case OP::OP_ADD:
1.53 paf 690: {
1.297 paf 691: Value& b=stack.pop().value(); Value& a=stack.pop().value();
692: Value& value=*new VDouble(a.as_double() + b.as_double());
693: stack.push(value);
1.53 paf 694: break;
695: }
1.322 misha 696: case OP::OP_MUL:
1.49 paf 697: {
1.297 paf 698: Value& b=stack.pop().value(); Value& a=stack.pop().value();
699: Value& value=*new VDouble(a.as_double() * b.as_double());
700: stack.push(value);
1.53 paf 701: break;
702: }
1.322 misha 703: case OP::OP_DIV:
1.53 paf 704: {
1.297 paf 705: Value& b=stack.pop().value(); Value& a=stack.pop().value();
1.170 parser 706:
1.297 paf 707: double a_double=a.as_double();
708: double b_double=b.as_double();
1.170 parser 709:
1.171 parser 710: if(b_double == 0) {
1.297 paf 711: //const String* problem_source=b.as_string();
1.223 paf 712: throw Exception("number.zerodivision",
1.297 paf 713: 0, //problem_source,
1.170 parser 714: "Division by zero");
1.171 parser 715: }
1.170 parser 716:
1.297 paf 717: Value& value=*new VDouble(a_double / b_double);
718: stack.push(value);
1.54 paf 719: break;
720: }
1.322 misha 721: case OP::OP_MOD:
1.55 paf 722: {
1.297 paf 723: Value& b=stack.pop().value(); Value& a=stack.pop().value();
1.170 parser 724:
1.297 paf 725: double a_double=a.as_double();
726: double b_double=b.as_double();
1.170 parser 727:
1.173 parser 728: if(b_double == 0) {
1.297 paf 729: //const String* problem_source=b.as_string();
1.223 paf 730: throw Exception("number.zerodivision",
1.297 paf 731: 0, //problem_source,
1.170 parser 732: "Modulus by zero");
1.171 parser 733: }
1.170 parser 734:
1.297 paf 735: Value& value=*new VDouble(fmod(a_double, b_double));
736: stack.push(value);
1.201 paf 737: break;
738: }
1.322 misha 739: case OP::OP_INTDIV:
1.201 paf 740: {
1.297 paf 741: Value& b=stack.pop().value(); Value& a=stack.pop().value();
1.201 paf 742:
1.297 paf 743: int a_int=a.as_int();
744: int b_int=b.as_int();
1.201 paf 745:
746: if(b_int == 0) {
1.297 paf 747: //const String* problem_source=b.as_string();
1.223 paf 748: throw Exception("number.zerodivision",
1.297 paf 749: 0, //problem_source,
1.201 paf 750: "Division by zero");
751: }
752:
1.297 paf 753: Value& value=*new VInt(a_int / b_int);
754: stack.push(value);
1.55 paf 755: break;
756: }
1.322 misha 757: case OP::OP_BIN_SL:
1.274 paf 758: {
1.297 paf 759: Value& b=stack.pop().value(); Value& a=stack.pop().value();
760: Value& value=*new VInt(
761: a.as_int() <<
762: b.as_int());
763: stack.push(value);
1.274 paf 764: break;
765: }
1.322 misha 766: case OP::OP_BIN_SR:
1.274 paf 767: {
1.297 paf 768: Value& b=stack.pop().value(); Value& a=stack.pop().value();
769: Value& value=*new VInt(
770: a.as_int() >>
771: b.as_int());
772: stack.push(value);
1.274 paf 773: break;
774: }
1.322 misha 775: case OP::OP_BIN_AND:
1.54 paf 776: {
1.297 paf 777: Value& b=stack.pop().value(); Value& a=stack.pop().value();
778: Value& value=*new VInt(
779: a.as_int() &
780: b.as_int());
781: stack.push(value);
1.54 paf 782: break;
783: }
1.322 misha 784: case OP::OP_BIN_OR:
1.54 paf 785: {
1.297 paf 786: Value& b=stack.pop().value(); Value& a=stack.pop().value();
787: Value& value=*new VInt(
788: a.as_int() |
789: b.as_int());
790: stack.push(value);
1.55 paf 791: break;
792: }
1.322 misha 793: case OP::OP_BIN_XOR:
1.56 paf 794: {
1.297 paf 795: Value& b=stack.pop().value(); Value& a=stack.pop().value();
796: Value& value=*new VInt(
797: a.as_int() ^
798: b.as_int());
799: stack.push(value);
1.56 paf 800: break;
801: }
1.322 misha 802: case OP::OP_LOG_AND:
1.55 paf 803: {
1.297 paf 804: ArrayOperation& local_ops=stack.pop().ops(); Value& a=stack.pop().value();
1.263 paf 805: bool result;
1.297 paf 806: if(a.as_bool()) {
807: execute(local_ops);
808: Value& b=stack.pop().value();
809: result=b.as_bool();
1.209 paf 810: } else
1.263 paf 811: result=false;
1.327 misha 812: Value& value=VBool::get(result);
1.297 paf 813: stack.push(value);
1.55 paf 814: break;
815: }
1.322 misha 816: case OP::OP_LOG_OR:
1.55 paf 817: {
1.297 paf 818: ArrayOperation& local_ops=stack.pop().ops(); Value& a=stack.pop().value();
1.263 paf 819: bool result;
1.297 paf 820: if(a.as_bool())
1.263 paf 821: result=true;
1.209 paf 822: else {
1.297 paf 823: execute(local_ops);
824: Value& b=stack.pop().value();
825: result=b.as_bool();
1.209 paf 826: }
1.327 misha 827: Value& value=VBool::get(result);
1.297 paf 828: stack.push(value);
1.56 paf 829: break;
830: }
1.322 misha 831: case OP::OP_LOG_XOR:
1.56 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_bool() ^ b.as_bool());
1.297 paf 835: stack.push(value);
1.55 paf 836: break;
837: }
1.322 misha 838: case OP::OP_NUM_LT:
1.55 paf 839: {
1.297 paf 840: volatile double b_double=stack.pop().value().as_double();
841: volatile double a_double=stack.pop().value().as_double();
1.327 misha 842: Value& value=VBool::get(a_double<b_double);
1.297 paf 843: stack.push(value);
1.55 paf 844: break;
845: }
1.322 misha 846: case OP::OP_NUM_GT:
1.55 paf 847: {
1.297 paf 848: volatile double b_double=stack.pop().value().as_double();
849: volatile double a_double=stack.pop().value().as_double();
1.327 misha 850: Value& value=VBool::get(a_double>b_double);
1.297 paf 851: stack.push(value);
1.55 paf 852: break;
853: }
1.322 misha 854: case OP::OP_NUM_LE:
1.55 paf 855: {
1.297 paf 856: volatile double b_double=stack.pop().value().as_double();
857: volatile double a_double=stack.pop().value().as_double();
1.327 misha 858: Value& value=VBool::get(a_double<=b_double);
1.297 paf 859: stack.push(value);
1.55 paf 860: break;
861: }
1.322 misha 862: case OP::OP_NUM_GE:
1.55 paf 863: {
1.297 paf 864: volatile double b_double=stack.pop().value().as_double();
865: volatile double a_double=stack.pop().value().as_double();
1.327 misha 866: Value& value=VBool::get(a_double>=b_double);
1.297 paf 867: stack.push(value);
1.55 paf 868: break;
869: }
1.322 misha 870: case OP::OP_NUM_EQ:
1.55 paf 871: {
1.297 paf 872: volatile double b_double=stack.pop().value().as_double();
873: volatile double a_double=stack.pop().value().as_double();
1.327 misha 874: Value& value=VBool::get(a_double==b_double);
1.297 paf 875: stack.push(value);
1.55 paf 876: break;
877: }
1.322 misha 878: case OP::OP_NUM_NE:
1.55 paf 879: {
1.297 paf 880: volatile double b_double=stack.pop().value().as_double();
881: volatile double a_double=stack.pop().value().as_double();
1.327 misha 882: Value& value=VBool::get(a_double!=b_double);
1.297 paf 883: stack.push(value);
1.54 paf 884: break;
885: }
1.322 misha 886: case OP::OP_STR_LT:
1.58 paf 887: {
1.297 paf 888: Value& b=stack.pop().value(); Value& a=stack.pop().value();
1.327 misha 889: Value& value=VBool::get(a.as_string() < b.as_string());
1.297 paf 890: stack.push(value);
1.58 paf 891: break;
892: }
1.322 misha 893: case OP::OP_STR_GT:
1.58 paf 894: {
1.297 paf 895: Value& b=stack.pop().value(); Value& a=stack.pop().value();
1.327 misha 896: Value& value=VBool::get(a.as_string() > b.as_string());
1.297 paf 897: stack.push(value);
1.58 paf 898: break;
899: }
1.322 misha 900: case OP::OP_STR_LE:
1.58 paf 901: {
1.297 paf 902: Value& b=stack.pop().value(); Value& a=stack.pop().value();
1.327 misha 903: Value& value=VBool::get(a.as_string() <= b.as_string());
1.297 paf 904: stack.push(value);
1.58 paf 905: break;
906: }
1.322 misha 907: case OP::OP_STR_GE:
1.54 paf 908: {
1.297 paf 909: Value& b=stack.pop().value(); Value& a=stack.pop().value();
1.327 misha 910: Value& value=VBool::get(a.as_string() >= b.as_string());
1.297 paf 911: stack.push(value);
1.58 paf 912: break;
913: }
1.322 misha 914: case OP::OP_STR_EQ:
1.58 paf 915: {
1.297 paf 916: Value& b=stack.pop().value(); Value& a=stack.pop().value();
1.327 misha 917: Value& value=VBool::get(a.as_string() == b.as_string());
1.297 paf 918: stack.push(value);
1.58 paf 919: break;
920: }
1.322 misha 921: case OP::OP_STR_NE:
1.58 paf 922: {
1.297 paf 923: Value& b=stack.pop().value(); Value& a=stack.pop().value();
1.327 misha 924: Value& value=VBool::get(a.as_string() != b.as_string());
1.297 paf 925: stack.push(value);
1.103 paf 926: break;
927: }
1.322 misha 928: case OP::OP_IS:
1.103 paf 929: {
1.297 paf 930: Value& b=stack.pop().value(); Value& a=stack.pop().value();
1.327 misha 931: Value& value=VBool::get(a.is(b.as_string().cstr()));
1.297 paf 932: stack.push(value);
1.28 paf 933: break;
934: }
935:
1.11 paf 936: default:
1.223 paf 937: throw Exception(0,
1.67 paf 938: 0,
1.297 paf 939: "invalid opcode %d", opcode);
1.11 paf 940: }
941: }
1.306 paf 942: } catch(const Exception&) {
1.297 paf 943: // record it to stack trace
1.301 paf 944: if(debug_name)
945: exception_trace.push(Trace(debug_name, debug_origin));
1.297 paf 946: rethrow;
947: }
1.1 paf 948: }
1.17 paf 949:
1.330 misha 950: #define SAVE_CONTEXT \
951: VMethodFrame *saved_method_frame=method_frame; \
952: Value* saved_rcontext=rcontext; \
953: WContext *saved_wcontext=wcontext;
954:
955: #define RESTORE_CONTEXT \
956: wcontext=saved_wcontext; \
957: rcontext=saved_rcontext; \
958: method_frame=saved_method_frame;
959:
1.332 misha 960: void Request::op_call(VMethodFrame& frame){
961: const Junction &junction=frame.junction;
962: VStateless_class& called_class=*junction.self.get_class();
1.319 misha 963: Value* new_self;
1.332 misha 964:
1.319 misha 965: if(wcontext->get_constructing()) {
966: wcontext->set_constructing(false);
1.332 misha 967: if(junction.method->call_type!=Method::CT_STATIC) {
1.319 misha 968: // this is a constructor call
969: HashStringValue& new_object_fields=*new HashStringValue();
1.332 misha 970: if(new_self=called_class.create_new_value(fpool, new_object_fields)) {
1.319 misha 971: // some stateless_class creatable derivates
972: } else
973: throw Exception(PARSER_RUNTIME,
974: 0, //&frame.name(),
975: "is not a constructor, system class '%s' can be constructed only implicitly",
976: called_class.name().cstr());
977:
978: frame.write(*new_self,
979: String::L_CLEAN // not used, always an object, not string
980: );
981: } else
982: throw Exception(PARSER_RUNTIME,
983: 0, //&frame.name(),
984: "method is static and can not be used as constructor");
1.332 misha 985: } else
986: new_self=&junction.self;
1.319 misha 987:
988: frame.set_self(*new_self);
989:
990: // see OP_PREPARE_TO_EXPRESSION
991: frame.set_in_expression(wcontext->get_in_expression());
992:
1.332 misha 993: SAVE_CONTEXT
994:
1.319 misha 995: rcontext=wcontext=&frame;
1.332 misha 996: method_frame=&frame;
1.319 misha 997:
1.332 misha 998: const Method& method=*junction.method;
999: Method::Call_type call_type=&called_class==new_self ? Method::CT_STATIC : Method::CT_DYNAMIC;
1.319 misha 1000:
1.332 misha 1001: if(method.call_type==Method::CT_ANY || method.call_type==call_type) { // allowed call type?
1002: if(method.native_code) { // native code?
1003: method.check_actual_numbered_params(junction.self, frame.numbered_params());
1004: method.native_code(*this, *frame.numbered_params()); // execute it
1005: } else // parser code, execute it
1006: recoursion_checked_execute(*method.parser_code);
1007: } else
1008: throw Exception(PARSER_RUNTIME,
1009: 0,
1010: "is not allowed to be called %s",
1011: call_type==Method::CT_STATIC?"statically":"dynamically");
1012:
1.330 misha 1013: RESTORE_CONTEXT
1.332 misha 1014: //return &frame;
1015: }
1016:
1017: void Request::op_call_write(VMethodFrame& frame){
1018: const Junction &junction=frame.junction;
1019:
1020: frame.set_self(junction.self);
1021:
1022: VMethodFrame *saved_method_frame=method_frame;
1023: Value* saved_rcontext=rcontext;
1.319 misha 1024:
1.332 misha 1025: rcontext=&frame;
1026: method_frame=&frame;
1027:
1028: const Method& method=*junction.method;
1029: Method::Call_type call_type=junction.self.get_class()==&junction.self ? Method::CT_STATIC : Method::CT_DYNAMIC;
1030:
1.333 ! misha 1031: if(method.call_type==Method::CT_ANY || method.call_type==call_type) { // allowed call type?
! 1032: if(method.native_code) { // native code?
! 1033: method.check_actual_numbered_params(junction.self, frame.numbered_params());
! 1034: method.native_code(*this, *frame.numbered_params()); // execute it
! 1035: } else // parser code, execute it
! 1036: recoursion_checked_execute(*method.parser_code);
1.332 misha 1037: } else
1038: throw Exception(PARSER_RUNTIME,
1039: 0,
1040: "is not allowed to be called %s",
1041: call_type==Method::CT_STATIC?"statically":"dynamically");
1042:
1043: rcontext=saved_rcontext;
1044: method_frame=saved_method_frame;
1.319 misha 1045: }
1046:
1.292 paf 1047: /**
1048: @bug ^superbase:method would dynamically call ^base:method if there is any
1049: */
1.330 misha 1050: Value& Request::get_element(Value& ncontext, const String& name) {
1051: if(!wcontext->get_constructing() // not constructing
1052: && wcontext->get_somebody_entered_some_class() ) // ^class:method
1.297 paf 1053: if(VStateless_class *called_class=ncontext.get_class())
1.249 paf 1054: if(VStateless_class *read_class=rcontext->get_class())
1055: if(read_class->derived_from(*called_class)) // current derived from called
1.297 paf 1056: if(Value* base=get_self().base()) { // doing DYNAMIC call
1.330 misha 1057: Temp_derived temp_derived(*base, 0); // temporarily prevent go-back-down virtual calls
1058: Value *value=base->get_element(name, *base, true); // virtual-up lookup starting from parent
1059: return *(value ? &process_to_value(*value) : VVoid::get());
1.249 paf 1060: }
1.330 misha 1061:
1062: Value* value=ncontext.get_element(name, ncontext, true);
1.291 paf 1063:
1064: if(value && wcontext->get_constructing())
1.330 misha 1065: if(Junction* junction=value->get_junction())
1.297 paf 1066: if(junction->self.get_class()!=&ncontext)
1.316 misha 1067: throw Exception(PARSER_RUNTIME,
1.291 paf 1068: &name,
1.297 paf 1069: "constructor must be declared in class '%s'",
1070: ncontext.get_class()->name_cstr());
1.63 paf 1071:
1.330 misha 1072: return *(value ? &process_to_value(*value) : VVoid::get());
1.309 paf 1073: }
1074:
1.329 misha 1075: void Request::put_element(Value& ncontext, const String& name, Value* value) {
1.309 paf 1076: // put_element can return property-setting-junction
1.329 misha 1077: if(const VJunction* vjunction=ncontext.put_element(ncontext, name, value, false))
1.312 paf 1078: if(vjunction!=PUT_ELEMENT_REPLACED_ELEMENT) {
1.309 paf 1079: // process it
1.329 misha 1080: VMethodFrame frame(vjunction->junction(), method_frame/*caller*/);
1081: int param_count=frame.method_params_count();
1082:
1.309 paf 1083: if(param_count!=1)
1.316 misha 1084: throw Exception(PARSER_RUNTIME,
1.309 paf 1085: 0,
1086: "setter method must have ONE parameter (has %d parameters)", param_count);
1087:
1.329 misha 1088: frame.store_params(&value, 1);
1.309 paf 1089: frame.set_self(frame.junction.self);
1090:
1.330 misha 1091: SAVE_CONTEXT
1.309 paf 1092:
1093: rcontext=wcontext=&frame;
1094: method_frame=&frame;
1095:
1.311 paf 1096: // prevent non-string writes for better error reporting [setters are not expected to return anything]
1.309 paf 1097: wcontext->write(*method_frame);
1098:
1099: recoursion_checked_execute(*frame.junction.method->parser_code); // parser code, execute it
1100: // we don't need it StringOrValue result=wcontext->result();
1101:
1.330 misha 1102: RESTORE_CONTEXT
1.309 paf 1103: }
1.34 paf 1104: }
1.70 paf 1105:
1.162 parser 1106: /** @param intercept_string
1.116 paf 1107: - true:
1108: they want result=string value,
1109: possible object result goes to wcontext
1110: - false:
1111: they want any result[string|object]
1112: nothing goes to wcontext.
1.125 paf 1113: used in @c (expression) params evaluation
1.224 paf 1114:
1115: using the fact it's either string_ or value_ result requested to speed up checkes
1.116 paf 1116: */
1.229 paf 1117: StringOrValue Request::process(Value& input_value, bool intercept_string) {
1.297 paf 1118: Junction* junction=input_value.get_junction();
1.307 paf 1119: if(junction) {
1120: if(junction->is_getter) { // is it a getter-junction?
1.329 misha 1121: VMethodFrame frame(*junction, method_frame/*caller*/);
1122: int param_count=frame.method_params_count();
1123:
1.331 misha 1124: if(param_count){
1125: if(junction->auto_name){ // default getter
1126: if(param_count==1){
1127: Value *param=new VString(*junction->auto_name);
1128: frame.store_params(¶m, 1);
1129: } else
1130: throw Exception(PARSER_RUNTIME,
1131: 0,
1132: "default getter method can't have more then 1 parameter (has %d parameters)", param_count);
1133: } else
1.320 misha 1134: throw Exception(PARSER_RUNTIME,
1135: 0,
1.331 misha 1136: "getter method must have no parameters (has %d parameters)", param_count);
1137: } // no need for else frame.empty_params()
1.320 misha 1138:
1.307 paf 1139: frame.set_self(frame.junction.self);
1140:
1.330 misha 1141: SAVE_CONTEXT
1.307 paf 1142:
1143: rcontext=wcontext=&frame;
1144: method_frame=&frame;
1145:
1146: recoursion_checked_execute(*frame.junction.method->parser_code); // parser code, execute it
1147: StringOrValue result=wcontext->result();
1148:
1.330 misha 1149: RESTORE_CONTEXT
1.307 paf 1150:
1151: return result;
1152: }
1153:
1154: if(junction->code) { // is it a code-junction?
1155: // process it
1156: StringOrValue result;
1.157 parser 1157: #ifdef DEBUG_EXECUTE
1.307 paf 1158: debug_printf(sapi_info, "ja->\n");
1.157 parser 1159: #endif
1.238 paf 1160:
1.307 paf 1161: if(!junction->method_frame)
1.316 misha 1162: throw Exception(PARSER_RUNTIME,
1.240 paf 1163: 0,
1164: "junction used outside of context");
1165:
1.330 misha 1166: SAVE_CONTEXT
1.307 paf 1167:
1168: method_frame=junction->method_frame;
1169: rcontext=junction->rcontext;
1170:
1171: // for expression method params
1172: // wcontext is set 0
1173: // using the fact in decision "which wwrapper to use"
1174: bool using_code_frame=intercept_string && junction->wcontext;
1175: if(using_code_frame) {
1.318 misha 1176: // almost plain wwrapper about junction wcontext
1177:
1178: VCodeFrame local(*junction->wcontext);
1.307 paf 1179: wcontext=&local;
1180:
1181: // execute it
1182: recoursion_checked_execute(*junction->code);
1183:
1184: // CodeFrame soul:
1.318 misha 1185: result=wcontext->result();
1.307 paf 1186: } else {
1187: // plain wwrapper
1188: WWrapper local(0/*empty*/, wcontext);
1189: wcontext=&local;
1190:
1191: // execute it
1192: recoursion_checked_execute(*junction->code);
1193:
1194: result=wcontext->result();
1195: }
1196:
1.330 misha 1197: RESTORE_CONTEXT
1.207 paf 1198:
1.157 parser 1199: #ifdef DEBUG_EXECUTE
1.307 paf 1200: debug_printf(sapi_info, "<-ja returned");
1.157 parser 1201: #endif
1.307 paf 1202: return result;
1203: }
1204:
1205: // it is then method-junction, do not explode it
1206: // just return it as we do for usual objects
1207: }
1208:
1209: return input_value;
1.85 paf 1210: }
1211:
1.332 misha 1212: void Request::process_write(Value& input_value) {
1213: Junction* junction=input_value.get_junction();
1214: if(junction) {
1215: if(junction->is_getter) { // is it a getter-junction?
1216: VMethodFrame frame(*junction, method_frame/*caller*/);
1217: int param_count=frame.method_params_count();
1218:
1219: if(param_count){
1220: if(junction->auto_name){ // default getter
1221: if(param_count==1){
1222: Value *param=new VString(*junction->auto_name);
1223: frame.store_params(¶m, 1);
1224: } else
1225: throw Exception(PARSER_RUNTIME,
1226: 0,
1227: "default getter method can't have more then 1 parameter (has %d parameters)", param_count);
1228: } else
1229: throw Exception(PARSER_RUNTIME,
1230: 0,
1231: "getter method must have no parameters (has %d parameters)", param_count);
1232: } // no need for else frame.empty_params()
1233:
1234: frame.set_self(frame.junction.self);
1235:
1236: SAVE_CONTEXT
1237:
1238: rcontext=wcontext=&frame;
1239: method_frame=&frame;
1240:
1241: recoursion_checked_execute(*frame.junction.method->parser_code); // parser code, execute it
1242:
1243: RESTORE_CONTEXT
1244:
1245: write_pass_lang(frame.result());
1246: return;
1247: }
1248:
1249: if(junction->code) { // is it a code-junction?
1250: // process it
1251: #ifdef DEBUG_EXECUTE
1252: debug_printf(sapi_info, "ja->\n");
1253: #endif
1254: if(!junction->method_frame)
1255: throw Exception(PARSER_RUNTIME,
1256: 0,
1257: "junction used outside of context");
1258:
1259: SAVE_CONTEXT
1260:
1261: method_frame=junction->method_frame;
1262: rcontext=junction->rcontext;
1263:
1264: // for expression method params
1265: // wcontext is set 0
1266: // using the fact in decision "which wwrapper to use"
1267: #ifdef OPTIMIZE_CALL
1268: if(wcontext==junction->wcontext){
1269: // no wrappers for wcontext
1270: recoursion_checked_execute(*junction->code);
1271: RESTORE_CONTEXT
1272:
1273: } else
1274: #endif
1275: if(junction->wcontext) {
1276: // almost plain wwrapper about junction wcontext
1277: VCodeFrame local(*junction->wcontext);
1278: wcontext=&local;
1279:
1280: // execute it
1281: recoursion_checked_execute(*junction->code);
1282: RESTORE_CONTEXT
1283: write_pass_lang(local.result());
1284: } else {
1285: // plain wwrapper
1286: WWrapper local(0/*empty*/, wcontext);
1287: wcontext=&local;
1288:
1289: // execute it
1290: recoursion_checked_execute(*junction->code);
1291: RESTORE_CONTEXT
1292: write_pass_lang(local.result());
1293: }
1294: #ifdef DEBUG_EXECUTE
1295: debug_printf(sapi_info, "<-ja returned");
1296: #endif
1297: return;
1298: }
1299:
1300: // it is then method-junction, do not explode it
1301: // just return it as we do for usual objects
1302: }
1303:
1304: write_pass_lang(input_value);
1305: }
1306:
1.298 paf 1307: StringOrValue Request::execute_method(VMethodFrame& amethod_frame, const Method& method) {
1.330 misha 1308: SAVE_CONTEXT
1.99 paf 1309:
1310: // initialize contexts
1.286 paf 1311: rcontext=wcontext=method_frame=&amethod_frame;
1.99 paf 1312:
1313: // execute!
1314: execute(*method.parser_code);
1315:
1316: // result
1.298 paf 1317: StringOrValue result=wcontext->result();
1.208 paf 1318:
1.330 misha 1319: RESTORE_CONTEXT
1.242 paf 1320:
1321: // return
1322: return result;
1.208 paf 1323: }
1324:
1.297 paf 1325: const String* Request::execute_method(Value& aself,
1.329 misha 1326: const Method& method, Value* optional_param,
1327: bool do_return_string) {
1.317 misha 1328:
1.330 misha 1329: SAVE_CONTEXT
1.208 paf 1330:
1.307 paf 1331: Junction local_junction(aself, &method);
1.321 misha 1332: VMethodFrame local_frame(local_junction, method_frame/*caller*/);
1.329 misha 1333: if(optional_param && local_frame.method_params_count()>0) {
1334: local_frame.store_params(&optional_param, 1);
1.330 misha 1335: } else {
1336: local_frame.empty_params();
1.242 paf 1337: }
1.285 paf 1338: local_frame.set_self(aself);
1.257 paf 1339: rcontext=wcontext=method_frame=&local_frame;
1.246 paf 1340:
1341: // prevent non-string writes for better error reporting
1.297 paf 1342: if(do_return_string)
1.246 paf 1343: wcontext->write(local_frame);
1.208 paf 1344:
1345: // execute!
1346: execute(*method.parser_code);
1347:
1348: // result
1.297 paf 1349: const String* result=0;
1350: if(do_return_string)
1351: result=&wcontext->result().as_string();
1.99 paf 1352:
1.330 misha 1353: RESTORE_CONTEXT
1.297 paf 1354:
1355: return result;
1.242 paf 1356: }
1357:
1.297 paf 1358: Request::Execute_nonvirtual_method_result
1359: Request::execute_nonvirtual_method(VStateless_class& aclass,
1.330 misha 1360: const String& method_name,
1361: VString* optional_param,
1362: bool do_return_string) {
1.297 paf 1363: Execute_nonvirtual_method_result result;
1364: result.method=aclass.get_method(method_name);
1365: if(result.method)
1.317 misha 1366: result.string=execute_method(aclass, *result.method, optional_param, do_return_string);
1.297 paf 1367: return result;
1.99 paf 1368: }
1369:
1.297 paf 1370: const String* Request::execute_virtual_method(Value& aself,
1.330 misha 1371: const String& method_name) {
1.297 paf 1372: if(Value* value=aself.get_element(method_name, aself, false))
1373: if(Junction* junction=value->get_junction())
1374: if(const Method *method=junction->method)
1375: return execute_method(aself, *method, 0/*no params*/, true);
1.188 parser 1376:
1.176 parser 1377: return 0;
1378: }