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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:
1.328 ! misha 8: static const char * const IDENT_EXECUTE_C="$Date: 2009-04-24 06:30:58 $";
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",
1.1 paf 57: "STORE_PARAM",
1.232 paf 58: "PREPARE_TO_CONSTRUCT_OBJECT", "PREPARE_TO_EXPRESSION",
59: "CALL", "CALL__WRITE",
1.49 paf 60:
61: // expression ops: unary
1.148 paf 62: "NEG", "INV", "NOT", "DEF", "IN", "FEXISTS", "DEXISTS",
1.49 paf 63: // expression ops: binary
1.201 paf 64: "SUB", "ADD", "MUL", "DIV", "MOD", "INTDIV",
1.275 paf 65: "BIN_SL", "BIN_SR",
1.56 paf 66: "BIN_AND", "BIN_OR", "BIN_XOR",
67: "LOG_AND", "LOG_OR", "LOG_XOR",
1.49 paf 68: "NUM_LT", "NUM_GT", "NUM_LE", "NUM_GE", "NUM_EQ", "NUM_NE",
1.103 paf 69: "STR_LT", "STR_GT", "STR_LE", "STR_GE", "STR_EQ", "STR_NE",
70: "IS"
1.1 paf 71: };
72:
1.297 paf 73: void va_debug_printf(SAPI_Info& sapi_info, const char* fmt,va_list args) {
1.127 paf 74: char buf[MAX_STRING];
75: vsnprintf(buf, MAX_STRING, fmt, args);
1.297 paf 76: SAPI::log(sapi_info, "%s", buf);
1.107 paf 77: }
78:
1.297 paf 79: void debug_printf(SAPI_Info& sapi_info, const char* fmt, ...) {
1.107 paf 80: va_list args;
1.297 paf 81: va_start(args, fmt);
82: va_debug_printf(sapi_info, fmt, args);
1.107 paf 83: va_end(args);
1.105 paf 84: }
85:
1.297 paf 86: void debug_dump(SAPI_Info& sapi_info, int level, ArrayOperation& ops) {
87: Array_iterator<Operation> i(ops);
1.190 parser 88: while(i.has_next()) {
1.323 misha 89: OP::OPCODE opcode=i.next().code;
1.1 paf 90:
1.328 ! misha 91: if(
! 92: opcode==OP::OP_VALUE
! 93: || opcode==OP::OP_STRING__WRITE
! 94: #ifdef OPTIMIZE_BYTECODE_GET_CLASS
! 95: || opcode==OP::OP_VALUE__GET_CLASS
! 96: #endif
! 97: #ifdef OPTIMIZE_BYTECODE_GET_ELEMENT
! 98: || opcode==OP::OP_VALUE__GET_ELEMENT
! 99: || opcode==OP::OP_VALUE__GET_ELEMENT__WRITE
! 100: || opcode==OP::OP_VALUE__GET_ELEMENT_OR_OPERATOR
! 101: #endif
! 102: ) {
1.297 paf 103: Operation::Origin origin=i.next().origin;
104: Value& value=*i.next().value;
105: debug_printf(sapi_info,
1.133 paf 106: "%*s%s"
107: " \"%s\" %s",
1.297 paf 108: level*4, "", opcode_name[opcode],
109: value.get_string()->cstr(), value.type());
1.133 paf 110: continue;
1.15 paf 111: }
1.297 paf 112: debug_printf(sapi_info, "%*s%s", level*4, "", opcode_name[opcode]);
1.1 paf 113:
1.297 paf 114: switch(opcode) {
1.323 misha 115: case OP::OP_CURLY_CODE__STORE_PARAM:
116: case OP::OP_EXPR_CODE__STORE_PARAM:
117: case OP::OP_CURLY_CODE__CONSTRUCT:
118: case OP::OP_NESTED_CODE:
119: case OP::OP_OBJECT_POOL:
120: case OP::OP_STRING_POOL:
121: case OP::OP_CALL:
122: case OP::OP_CALL__WRITE:
1.297 paf 123: if(ArrayOperation* local_ops=i.next().ops)
124: debug_dump(sapi_info, level+1, *local_ops);
1.1 paf 125: }
126: }
127: }
1.157 parser 128: #endif
1.1 paf 129:
1.297 paf 130: // Request
131:
132: void Request::execute(ArrayOperation& ops) {
133: register Stack<StackItem>& stack=this->stack; // helps a lot on MSVC: 'esi'
1.159 parser 134:
1.304 paf 135: const String* debug_name=0; Operation::Origin debug_origin={0, 0, 0};
1.297 paf 136: try{
1.157 parser 137: #ifdef DEBUG_EXECUTE
1.297 paf 138: debug_printf(sapi_info, "source----------------------------\n");
139: debug_dump(sapi_info, 0, ops);
140: debug_printf(sapi_info, "execution-------------------------\n");
1.157 parser 141: #endif
1.297 paf 142: for(Array_iterator<Operation> i(ops); i.has_next(); ) {
1.322 misha 143: OP::OPCODE opcode=i.next().code;
1.293 paf 144:
1.157 parser 145: #ifdef DEBUG_EXECUTE
1.297 paf 146: debug_printf(sapi_info, "%d:%s", stack.top_index()+1, opcode_name[opcode]);
1.157 parser 147: #endif
1.11 paf 148:
1.297 paf 149: switch(opcode) {
1.51 paf 150: // param in next instruction
1.322 misha 151: case OP::OP_VALUE:
1.32 paf 152: {
1.297 paf 153: debug_origin=i.next().origin;
154: Value& value=*i.next().value;
1.157 parser 155: #ifdef DEBUG_EXECUTE
1.297 paf 156: debug_printf(sapi_info, " \"%s\" %s", value.get_string()->cstr(), value.type());
1.157 parser 157: #endif
1.297 paf 158: stack.push(value);
1.32 paf 159: break;
160: }
1.328 ! misha 161:
! 162: #ifdef OPTIMIZE_BYTECODE_GET_CLASS
! 163: case OP::OP_VALUE__GET_CLASS:
! 164: {
! 165: // maybe they do ^class:method[] call, remember the fact
! 166: wcontext->set_somebody_entered_some_class();
! 167:
! 168: debug_origin=i.next().origin;
! 169: Value& value=*i.next().value;
! 170: const String& name=*value.get_string();
! 171:
! 172: #ifdef DEBUG_EXECUTE
! 173: debug_printf(sapi_info, " \"%s\" ", name.cstr());
! 174: #endif
! 175:
! 176: Value* class_value=classes().get(name);
! 177: if(!class_value)
! 178: throw Exception(PARSER_RUNTIME,
! 179: &name,
! 180: "class is undefined");
! 181:
! 182: stack.push(*class_value);
! 183: break;
! 184: }
! 185: #else
1.322 misha 186: case OP::OP_GET_CLASS:
1.38 paf 187: {
1.130 paf 188: // maybe they do ^class:method[] call, remember the fact
1.215 paf 189: wcontext->set_somebody_entered_some_class();
1.98 paf 190:
1.297 paf 191: const String& name=stack.pop().string();
192: Value* value=classes().get(name);
1.120 paf 193: if(!value)
1.316 misha 194: throw Exception(PARSER_RUNTIME,
1.66 paf 195: &name,
1.143 paf 196: "class is undefined");
1.66 paf 197:
1.297 paf 198: stack.push(*value);
1.38 paf 199: break;
200: }
1.328 ! misha 201: #endif
1.51 paf 202: // OP_WITH
1.322 misha 203: case OP::OP_WITH_ROOT:
1.187 parser 204: {
1.297 paf 205: stack.push(*method_frame);
1.187 parser 206: break;
207: }
1.322 misha 208: case OP::OP_WITH_SELF:
1.37 paf 209: {
1.297 paf 210: stack.push(get_self());
1.37 paf 211: break;
212: }
1.322 misha 213: case OP::OP_WITH_READ:
1.15 paf 214: {
1.297 paf 215: stack.push(*rcontext);
1.20 paf 216: break;
217: }
1.322 misha 218: case OP::OP_WITH_WRITE:
1.20 paf 219: {
1.287 paf 220: if(wcontext==method_frame)
1.316 misha 221: throw Exception(PARSER_RUNTIME,
1.287 paf 222: 0,
223: "$.name outside of $name[...]");
224:
1.297 paf 225: stack.push(*wcontext);
1.20 paf 226: break;
227: }
1.37 paf 228:
1.51 paf 229: // OTHER ACTIONS BUT WITHs
1.322 misha 230: case OP::OP_CONSTRUCT_VALUE:
1.20 paf 231: {
1.297 paf 232: Value& value=stack.pop().value();
233: const String& name=stack.pop().string(); debug_name=&name;
234: Value& ncontext=stack.pop().value();
1.309 paf 235: put_element(ncontext, name, value);
1.308 paf 236:
1.213 paf 237: break;
238: }
1.322 misha 239: case OP::OP_CONSTRUCT_EXPR:
1.80 paf 240: {
1.219 paf 241: // see OP_PREPARE_TO_EXPRESSION
242: wcontext->set_in_expression(false);
243:
1.308 paf 244: Value& expr=stack.pop().value();
1.297 paf 245: const String& name=stack.pop().string(); debug_name=&name;
246: Value& ncontext=stack.pop().value();
1.308 paf 247: Value& value=expr.as_expr_result();
1.309 paf 248: put_element(ncontext, name, value);
1.80 paf 249: break;
250: }
1.322 misha 251: case OP::OP_CURLY_CODE__CONSTRUCT:
1.182 parser 252: {
1.297 paf 253: ArrayOperation& local_ops=*i.next().ops;
1.182 parser 254: #ifdef DEBUG_EXECUTE
1.297 paf 255: debug_printf(sapi_info, " (%d)\n", local_ops.count());
256: debug_dump(sapi_info, 1, local_ops);
1.326 misha 257: #endif
258: VJunction& value=*new VJunction(
1.297 paf 259: get_self(), 0,
1.257 paf 260: method_frame,
1.240 paf 261: rcontext,
262: wcontext,
1.312 paf 263: &local_ops);
1.238 paf 264:
1.326 misha 265: wcontext->attach_junction(&value);
266:
1.297 paf 267: const String& name=stack.pop().string(); debug_name=&name;
268: Value& ncontext=stack.pop().value();
1.312 paf 269: if(const VJunction* vjunction=ncontext.put_element(ncontext, name, &value, false))
270: if(vjunction!=PUT_ELEMENT_REPLACED_ELEMENT)
1.316 misha 271: throw Exception(PARSER_RUNTIME,
1.308 paf 272: 0,
273: "property value can not be code, use [] or () brackets");
274:
1.182 parser 275: break;
276: }
1.322 misha 277: case OP::OP_NESTED_CODE:
1.209 paf 278: {
1.297 paf 279: ArrayOperation& local_ops=*i.next().ops;
1.209 paf 280: #ifdef DEBUG_EXECUTE
1.297 paf 281: debug_printf(sapi_info, " (%d)\n", local_ops.count());
282: debug_dump(sapi_info, 1, local_ops);
1.209 paf 283: #endif
1.297 paf 284: stack.push(local_ops);
1.209 paf 285: break;
286: }
1.322 misha 287: case OP::OP_WRITE_VALUE:
1.13 paf 288: {
1.297 paf 289: Value& value=stack.pop().value();
290: write_assign_lang(value);
1.86 paf 291: break;
292: }
1.322 misha 293: case OP::OP_WRITE_EXPR_RESULT:
1.108 paf 294: {
1.297 paf 295: Value& value=stack.pop().value();
296: write_no_lang(value.as_expr_result());
1.230 paf 297:
298: // must be after write(result) and
1.219 paf 299: // see OP_PREPARE_TO_EXPRESSION
300: wcontext->set_in_expression(false);
1.108 paf 301: break;
302: }
1.322 misha 303: case OP::OP_STRING__WRITE:
1.86 paf 304: {
1.297 paf 305: i.next(); // ignore origin
306: Value* value=i.next().value;
1.157 parser 307: #ifdef DEBUG_EXECUTE
1.297 paf 308: debug_printf(sapi_info, " \"%s\"", value->get_string()->cstr());
1.157 parser 309: #endif
1.297 paf 310: write_no_lang(*value->get_string());
1.13 paf 311: break;
1.14 paf 312: }
1.328 ! misha 313:
! 314: #ifdef OPTIMIZE_BYTECODE_GET_ELEMENT
! 315: case OP::OP_VALUE__GET_ELEMENT_OR_OPERATOR:
! 316: {
! 317: debug_origin=i.next().origin;
! 318: const String& name=*i.next().value->get_string(); debug_name=&name;
! 319:
! 320: #ifdef DEBUG_EXECUTE
! 321: debug_printf(sapi_info, " \"%s\" ", name.cstr());
! 322: #endif
! 323:
! 324: Value& value=get_element(*rcontext, name, true);
! 325: stack.push(value);
! 326: break;
! 327: }
! 328: #else
1.322 misha 329: case OP::OP_GET_ELEMENT_OR_OPERATOR:
1.215 paf 330: {
1.297 paf 331: const String& name=stack.pop().string(); debug_name=&name;
332: Value& ncontext=stack.pop().value();
333: Value& value=get_element(ncontext, name, true);
334: stack.push(value);
1.215 paf 335: break;
336: }
1.328 ! misha 337: #endif
! 338:
1.322 misha 339: case OP::OP_GET_ELEMENT:
1.11 paf 340: {
1.297 paf 341: const String& name=stack.pop().string(); debug_name=&name;
342: Value& ncontext=stack.pop().value();
343: Value& value=get_element(ncontext, name, false);
344: stack.push(value);
1.17 paf 345: break;
346: }
347:
1.328 ! misha 348: #ifdef OPTIMIZE_BYTECODE_GET_ELEMENT
! 349: case OP::OP_VALUE__GET_ELEMENT:
! 350: {
! 351: debug_origin=i.next().origin;
! 352: const String& name=*i.next().value->get_string(); debug_name=&name;
! 353:
! 354: #ifdef DEBUG_EXECUTE
! 355: debug_printf(sapi_info, " \"%s\" ", name.cstr());
! 356: #endif
! 357:
! 358: Value& value=get_element(*rcontext, name, false);
! 359: stack.push(value);
! 360: break;
! 361: }
! 362: #endif
! 363:
! 364:
1.322 misha 365: case OP::OP_GET_ELEMENT__WRITE:
1.17 paf 366: {
1.297 paf 367: const String& name=stack.pop().string(); debug_name=&name;
368: Value& ncontext=stack.pop().value();
369: Value& value=get_element(ncontext, name, false);
370: write_assign_lang(value);
1.17 paf 371: break;
372: }
373:
1.328 ! misha 374: #ifdef OPTIMIZE_BYTECODE_GET_ELEMENT
! 375: case OP::OP_VALUE__GET_ELEMENT__WRITE:
! 376: {
! 377: debug_origin=i.next().origin;
! 378: const String& name=*i.next().value->get_string(); debug_name=&name;
! 379:
! 380: #ifdef DEBUG_EXECUTE
! 381: debug_printf(sapi_info, " \"%s\" ", name.cstr());
! 382: #endif
! 383:
! 384: Value& value=get_element(*rcontext, name, false);
! 385: write_assign_lang(value);
! 386: break;
! 387: }
! 388: #endif
1.32 paf 389:
1.322 misha 390: case OP::OP_OBJECT_POOL:
1.17 paf 391: {
1.297 paf 392: ArrayOperation& local_ops=*i.next().ops;
1.226 paf 393:
1.257 paf 394: WContext *saved_wcontext=wcontext;
1.297 paf 395: String::Language saved_lang=flang;
396: flang=String::L_PASS_APPENDED;
397: WWrapper local(0/*empty*/, wcontext);
1.226 paf 398: wcontext=&local;
399:
1.297 paf 400: execute(local_ops);
1.226 paf 401:
1.297 paf 402: stack.push(wcontext->result().as_value());
1.257 paf 403: flang=saved_lang;
404: wcontext=saved_wcontext;
1.13 paf 405: break;
1.15 paf 406: }
1.13 paf 407:
1.322 misha 408: case OP::OP_STRING_POOL:
1.49 paf 409: {
1.297 paf 410: ArrayOperation& local_ops=*i.next().ops;
1.226 paf 411:
1.257 paf 412: WContext *saved_wcontext=wcontext;
1.297 paf 413: WWrapper local(0 /*empty*/, wcontext);
1.226 paf 414: wcontext=&local;
415:
1.297 paf 416: execute(local_ops);
1.226 paf 417:
1.297 paf 418: Value* value;
1.49 paf 419: // from "$a $b" part of expression taking only string value,
420: // ignoring any other content of wcontext
1.297 paf 421: if(const String* string=wcontext->get_string())
422: value=new VString(*string);
1.80 paf 423: else
1.324 misha 424: value=VVoid::get();
1.297 paf 425: stack.push(*value);
426:
1.257 paf 427: wcontext=saved_wcontext;
1.49 paf 428: break;
429: }
430:
1.51 paf 431: // CALL
1.322 misha 432: case OP::OP_STORE_PARAM:
1.28 paf 433: {
1.297 paf 434: Value& value=stack.pop().value();
1.299 paf 435: VMethodFrame& frame=stack.top_value().method_frame();
1.297 paf 436: // this op is executed from CALL local_ops only, so may skip the check "method_frame_to_fill==0"
437: frame.store_param(value);
1.28 paf 438: break;
439: }
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;
1.299 paf 445: VMethodFrame& frame=stack.top_value().method_frame();
1.237 paf 446: #ifdef DEBUG_EXECUTE
1.297 paf 447: debug_printf(sapi_info, " (%d)\n", local_ops.count());
448: debug_dump(sapi_info, 1, local_ops);
1.237 paf 449: #endif
450: // when they evaluate expression parameter,
451: // the object expression result
452: // does not need to be written into calling frame
453: // it must go into any expressions using that parameter
454: // hence, we zero junction.wcontext here, and later
455: // in .process we would test that field
456: // in decision "which wwrapper to use"
1.326 misha 457: VJunction& value=*new VJunction(
1.297 paf 458: get_self(), 0,
1.257 paf 459: method_frame,
1.237 paf 460: rcontext,
1.322 misha 461: opcode==OP::OP_EXPR_CODE__STORE_PARAM?0:wcontext,
1.312 paf 462: &local_ops);
1.326 misha 463: #ifdef USE_DESTRUCTORS
464: value.set_temporal(true);
465: #else
466: if (opcode!=OP::OP_EXPR_CODE__STORE_PARAM)
467: #endif
468: wcontext->attach_junction(&value);
1.237 paf 469: // store param
470: // this op is executed from CALL local_ops only, so can not check method_frame_to_fill==0
1.297 paf 471: frame.store_param(value);
1.29 paf 472: break;
473: }
474:
1.322 misha 475: case OP::OP_PREPARE_TO_CONSTRUCT_OBJECT:
1.186 parser 476: {
1.200 paf 477: wcontext->set_constructing(true);
1.186 parser 478: break;
479: }
1.219 paf 480:
1.322 misha 481: case OP::OP_PREPARE_TO_EXPRESSION:
1.219 paf 482: {
483: wcontext->set_in_expression(true);
484: break;
485: }
486:
1.322 misha 487: case OP::OP_CALL:
488: case OP::OP_CALL__WRITE:
1.29 paf 489: {
1.297 paf 490: //is_debug_junction=true;
491: ArrayOperation* local_ops=i.next().ops;
1.157 parser 492: #ifdef DEBUG_EXECUTE
1.297 paf 493: debug_printf(sapi_info, " (%d)\n", local_ops?local_ops->count():0);
494: if(local_ops)
495: debug_dump(sapi_info, 1, *local_ops);
1.237 paf 496:
1.297 paf 497: debug_printf(sapi_info, "->\n");
1.157 parser 498: #endif
1.297 paf 499: Value& value=stack.pop().value();
1.237 paf 500:
1.297 paf 501: Junction* junction=value.get_junction();
502: if(!junction) {
503: if(value.is("void"))
1.316 misha 504: throw Exception(PARSER_RUNTIME,
1.297 paf 505: 0,
506: "undefined method");
507: else
1.316 misha 508: throw Exception(PARSER_RUNTIME,
1.297 paf 509: 0,
510: "is '%s', not a method or junction, can not call it",
511: value.type());
512: }
1.282 paf 513: /* no check needed, code compiled the way that that's impossible
1.276 paf 514: // check:
515: // that this is method-junction, not a code-junction
1.278 paf 516: // [disabling these contstructions:]
517: // $junction{code}
518: // ^junction[]
1.276 paf 519: if(!junction->method)
1.316 misha 520: throw Exception(PARSER_RUNTIME,
1.297 paf 521: "is '%s', it is code junction, can not call it",
522: value.type());
1.282 paf 523: */
1.237 paf 524:
1.321 misha 525: VMethodFrame frame(*junction, method_frame);
526: if(local_ops){ // store param code goes here
527: stack.push(frame); // argument for *STORE_PARAM ops
528: execute(*local_ops);
529: stack.pop().value();
530: }
531: WContext* result_wcontext=op_call(frame);
1.322 misha 532: if(opcode==OP::OP_CALL__WRITE) {
1.321 misha 533: write_assign_lang(result_wcontext->result());
534: } else { // OP_CALL
535: stack.push(result_wcontext->result().as_value());
1.237 paf 536: }
1.220 paf 537:
1.157 parser 538: #ifdef DEBUG_EXECUTE
1.297 paf 539: debug_printf(sapi_info, "<-returned");
1.157 parser 540: #endif
1.297 paf 541: //is_debug_junction=false;
1.327 misha 542:
543: if(get_skip())
544: return;
545: if(get_interrupted()) {
546: set_interrupted(false);
547: throw Exception("parser.interrupted",
548: 0,
549: "execution stopped");
550: }
1.49 paf 551: break;
552: }
553:
1.55 paf 554: // expression ops: unary
1.322 misha 555: case OP::OP_NEG:
1.55 paf 556: {
1.297 paf 557: Value& a=stack.pop().value();
558: Value& value=*new VDouble(-a.as_double());
559: stack.push(value);
1.55 paf 560: break;
561: }
1.322 misha 562: case OP::OP_INV:
1.55 paf 563: {
1.297 paf 564: Value& a=stack.pop().value();
565: Value& value=*new VDouble(~a.as_int());
566: stack.push(value);
1.55 paf 567: break;
568: }
1.322 misha 569: case OP::OP_NOT:
1.55 paf 570: {
1.297 paf 571: Value& a=stack.pop().value();
1.327 misha 572: Value& value=VBool::get(!a.as_bool());
1.297 paf 573: stack.push(value);
1.55 paf 574: break;
575: }
1.322 misha 576: case OP::OP_DEF:
1.62 paf 577: {
1.297 paf 578: Value& a=stack.pop().value();
1.327 misha 579: Value& value=VBool::get(a.is_defined());
1.297 paf 580: stack.push(value);
1.62 paf 581: break;
582: }
1.322 misha 583: case OP::OP_IN:
1.62 paf 584: {
1.297 paf 585: Value& a=stack.pop().value();
586: const String& path=a.as_string();
1.327 misha 587: Value& value=VBool::get(request_info.uri && *request_info.uri && path.this_starts(request_info.uri));
1.297 paf 588: stack.push(value);
1.62 paf 589: break;
590: }
1.322 misha 591: case OP::OP_FEXISTS:
1.62 paf 592: {
1.297 paf 593: Value& a=stack.pop().value();
1.327 misha 594: Value& value=VBool::get(file_exist(absolute(a.as_string())));
1.297 paf 595: stack.push(value);
1.148 paf 596: break;
597: }
1.322 misha 598: case OP::OP_DEXISTS:
1.148 paf 599: {
1.297 paf 600: Value& a=stack.pop().value();
1.327 misha 601: Value& value=VBool::get(dir_exists(absolute(a.as_string())));
1.297 paf 602: stack.push(value);
1.62 paf 603: break;
604: }
1.55 paf 605:
606: // expression ops: binary
1.322 misha 607: case OP::OP_SUB:
1.53 paf 608: {
1.297 paf 609: Value& b=stack.pop().value(); Value& a=stack.pop().value();
610: Value& value=*new VDouble(a.as_double() - b.as_double());
611: stack.push(value);
1.53 paf 612: break;
613: }
1.322 misha 614: case OP::OP_ADD:
1.53 paf 615: {
1.297 paf 616: Value& b=stack.pop().value(); Value& a=stack.pop().value();
617: Value& value=*new VDouble(a.as_double() + b.as_double());
618: stack.push(value);
1.53 paf 619: break;
620: }
1.322 misha 621: case OP::OP_MUL:
1.49 paf 622: {
1.297 paf 623: Value& b=stack.pop().value(); Value& a=stack.pop().value();
624: Value& value=*new VDouble(a.as_double() * b.as_double());
625: stack.push(value);
1.53 paf 626: break;
627: }
1.322 misha 628: case OP::OP_DIV:
1.53 paf 629: {
1.297 paf 630: Value& b=stack.pop().value(); Value& a=stack.pop().value();
1.170 parser 631:
1.297 paf 632: double a_double=a.as_double();
633: double b_double=b.as_double();
1.170 parser 634:
1.171 parser 635: if(b_double == 0) {
1.297 paf 636: //const String* problem_source=b.as_string();
1.223 paf 637: throw Exception("number.zerodivision",
1.297 paf 638: 0, //problem_source,
1.170 parser 639: "Division by zero");
1.171 parser 640: }
1.170 parser 641:
1.297 paf 642: Value& value=*new VDouble(a_double / b_double);
643: stack.push(value);
1.54 paf 644: break;
645: }
1.322 misha 646: case OP::OP_MOD:
1.55 paf 647: {
1.297 paf 648: Value& b=stack.pop().value(); Value& a=stack.pop().value();
1.170 parser 649:
1.297 paf 650: double a_double=a.as_double();
651: double b_double=b.as_double();
1.170 parser 652:
1.173 parser 653: if(b_double == 0) {
1.297 paf 654: //const String* problem_source=b.as_string();
1.223 paf 655: throw Exception("number.zerodivision",
1.297 paf 656: 0, //problem_source,
1.170 parser 657: "Modulus by zero");
1.171 parser 658: }
1.170 parser 659:
1.297 paf 660: Value& value=*new VDouble(fmod(a_double, b_double));
661: stack.push(value);
1.201 paf 662: break;
663: }
1.322 misha 664: case OP::OP_INTDIV:
1.201 paf 665: {
1.297 paf 666: Value& b=stack.pop().value(); Value& a=stack.pop().value();
1.201 paf 667:
1.297 paf 668: int a_int=a.as_int();
669: int b_int=b.as_int();
1.201 paf 670:
671: if(b_int == 0) {
1.297 paf 672: //const String* problem_source=b.as_string();
1.223 paf 673: throw Exception("number.zerodivision",
1.297 paf 674: 0, //problem_source,
1.201 paf 675: "Division by zero");
676: }
677:
1.297 paf 678: Value& value=*new VInt(a_int / b_int);
679: stack.push(value);
1.55 paf 680: break;
681: }
1.322 misha 682: case OP::OP_BIN_SL:
1.274 paf 683: {
1.297 paf 684: Value& b=stack.pop().value(); Value& a=stack.pop().value();
685: Value& value=*new VInt(
686: a.as_int() <<
687: b.as_int());
688: stack.push(value);
1.274 paf 689: break;
690: }
1.322 misha 691: case OP::OP_BIN_SR:
1.274 paf 692: {
1.297 paf 693: Value& b=stack.pop().value(); Value& a=stack.pop().value();
694: Value& value=*new VInt(
695: a.as_int() >>
696: b.as_int());
697: stack.push(value);
1.274 paf 698: break;
699: }
1.322 misha 700: case OP::OP_BIN_AND:
1.54 paf 701: {
1.297 paf 702: Value& b=stack.pop().value(); Value& a=stack.pop().value();
703: Value& value=*new VInt(
704: a.as_int() &
705: b.as_int());
706: stack.push(value);
1.54 paf 707: break;
708: }
1.322 misha 709: case OP::OP_BIN_OR:
1.54 paf 710: {
1.297 paf 711: Value& b=stack.pop().value(); Value& a=stack.pop().value();
712: Value& value=*new VInt(
713: a.as_int() |
714: b.as_int());
715: stack.push(value);
1.55 paf 716: break;
717: }
1.322 misha 718: case OP::OP_BIN_XOR:
1.56 paf 719: {
1.297 paf 720: Value& b=stack.pop().value(); Value& a=stack.pop().value();
721: Value& value=*new VInt(
722: a.as_int() ^
723: b.as_int());
724: stack.push(value);
1.56 paf 725: break;
726: }
1.322 misha 727: case OP::OP_LOG_AND:
1.55 paf 728: {
1.297 paf 729: ArrayOperation& local_ops=stack.pop().ops(); Value& a=stack.pop().value();
1.263 paf 730: bool result;
1.297 paf 731: if(a.as_bool()) {
732: execute(local_ops);
733: Value& b=stack.pop().value();
734: result=b.as_bool();
1.209 paf 735: } else
1.263 paf 736: result=false;
1.327 misha 737: Value& value=VBool::get(result);
1.297 paf 738: stack.push(value);
1.55 paf 739: break;
740: }
1.322 misha 741: case OP::OP_LOG_OR:
1.55 paf 742: {
1.297 paf 743: ArrayOperation& local_ops=stack.pop().ops(); Value& a=stack.pop().value();
1.263 paf 744: bool result;
1.297 paf 745: if(a.as_bool())
1.263 paf 746: result=true;
1.209 paf 747: else {
1.297 paf 748: execute(local_ops);
749: Value& b=stack.pop().value();
750: result=b.as_bool();
1.209 paf 751: }
1.327 misha 752: Value& value=VBool::get(result);
1.297 paf 753: stack.push(value);
1.56 paf 754: break;
755: }
1.322 misha 756: case OP::OP_LOG_XOR:
1.56 paf 757: {
1.297 paf 758: Value& b=stack.pop().value(); Value& a=stack.pop().value();
1.327 misha 759: Value& value=VBool::get(a.as_bool() ^ b.as_bool());
1.297 paf 760: stack.push(value);
1.55 paf 761: break;
762: }
1.322 misha 763: case OP::OP_NUM_LT:
1.55 paf 764: {
1.297 paf 765: volatile double b_double=stack.pop().value().as_double();
766: volatile double a_double=stack.pop().value().as_double();
1.327 misha 767: Value& value=VBool::get(a_double<b_double);
1.297 paf 768: stack.push(value);
1.55 paf 769: break;
770: }
1.322 misha 771: case OP::OP_NUM_GT:
1.55 paf 772: {
1.297 paf 773: volatile double b_double=stack.pop().value().as_double();
774: volatile double a_double=stack.pop().value().as_double();
1.327 misha 775: Value& value=VBool::get(a_double>b_double);
1.297 paf 776: stack.push(value);
1.55 paf 777: break;
778: }
1.322 misha 779: case OP::OP_NUM_LE:
1.55 paf 780: {
1.297 paf 781: volatile double b_double=stack.pop().value().as_double();
782: volatile double a_double=stack.pop().value().as_double();
1.327 misha 783: Value& value=VBool::get(a_double<=b_double);
1.297 paf 784: stack.push(value);
1.55 paf 785: break;
786: }
1.322 misha 787: case OP::OP_NUM_GE:
1.55 paf 788: {
1.297 paf 789: volatile double b_double=stack.pop().value().as_double();
790: volatile double a_double=stack.pop().value().as_double();
1.327 misha 791: Value& value=VBool::get(a_double>=b_double);
1.297 paf 792: stack.push(value);
1.55 paf 793: break;
794: }
1.322 misha 795: case OP::OP_NUM_EQ:
1.55 paf 796: {
1.297 paf 797: volatile double b_double=stack.pop().value().as_double();
798: volatile double a_double=stack.pop().value().as_double();
1.327 misha 799: Value& value=VBool::get(a_double==b_double);
1.297 paf 800: stack.push(value);
1.55 paf 801: break;
802: }
1.322 misha 803: case OP::OP_NUM_NE:
1.55 paf 804: {
1.297 paf 805: volatile double b_double=stack.pop().value().as_double();
806: volatile double a_double=stack.pop().value().as_double();
1.327 misha 807: Value& value=VBool::get(a_double!=b_double);
1.297 paf 808: stack.push(value);
1.54 paf 809: break;
810: }
1.322 misha 811: case OP::OP_STR_LT:
1.58 paf 812: {
1.297 paf 813: Value& b=stack.pop().value(); Value& a=stack.pop().value();
1.327 misha 814: Value& value=VBool::get(a.as_string() < b.as_string());
1.297 paf 815: stack.push(value);
1.58 paf 816: break;
817: }
1.322 misha 818: case OP::OP_STR_GT:
1.58 paf 819: {
1.297 paf 820: Value& b=stack.pop().value(); Value& a=stack.pop().value();
1.327 misha 821: Value& value=VBool::get(a.as_string() > b.as_string());
1.297 paf 822: stack.push(value);
1.58 paf 823: break;
824: }
1.322 misha 825: case OP::OP_STR_LE:
1.58 paf 826: {
1.297 paf 827: Value& b=stack.pop().value(); Value& a=stack.pop().value();
1.327 misha 828: Value& value=VBool::get(a.as_string() <= b.as_string());
1.297 paf 829: stack.push(value);
1.58 paf 830: break;
831: }
1.322 misha 832: case OP::OP_STR_GE:
1.54 paf 833: {
1.297 paf 834: Value& b=stack.pop().value(); Value& a=stack.pop().value();
1.327 misha 835: Value& value=VBool::get(a.as_string() >= b.as_string());
1.297 paf 836: stack.push(value);
1.58 paf 837: break;
838: }
1.322 misha 839: case OP::OP_STR_EQ:
1.58 paf 840: {
1.297 paf 841: Value& b=stack.pop().value(); Value& a=stack.pop().value();
1.327 misha 842: Value& value=VBool::get(a.as_string() == b.as_string());
1.297 paf 843: stack.push(value);
1.58 paf 844: break;
845: }
1.322 misha 846: case OP::OP_STR_NE:
1.58 paf 847: {
1.297 paf 848: Value& b=stack.pop().value(); Value& a=stack.pop().value();
1.327 misha 849: Value& value=VBool::get(a.as_string() != b.as_string());
1.297 paf 850: stack.push(value);
1.103 paf 851: break;
852: }
1.322 misha 853: case OP::OP_IS:
1.103 paf 854: {
1.297 paf 855: Value& b=stack.pop().value(); Value& a=stack.pop().value();
1.327 misha 856: Value& value=VBool::get(a.is(b.as_string().cstr()));
1.297 paf 857: stack.push(value);
1.28 paf 858: break;
859: }
860:
1.11 paf 861: default:
1.223 paf 862: throw Exception(0,
1.67 paf 863: 0,
1.297 paf 864: "invalid opcode %d", opcode);
1.11 paf 865: }
866: }
1.306 paf 867: } catch(const Exception&) {
1.297 paf 868: // record it to stack trace
1.301 paf 869: if(debug_name)
870: exception_trace.push(Trace(debug_name, debug_origin));
1.297 paf 871: rethrow;
872: }
1.1 paf 873: }
1.17 paf 874:
1.319 misha 875: WContext* Request::op_call(VMethodFrame& frame){
876: frame.fill_unspecified_params();
877: VMethodFrame *saved_method_frame=method_frame;
878: Value* saved_rcontext=rcontext;
879: WContext *saved_wcontext=wcontext;
880:
881: VStateless_class& called_class=*frame.junction.self.get_class();
882: Value* new_self;
883: if(wcontext->get_constructing()) {
884: wcontext->set_constructing(false);
885: new_self=&get_self();
886: if(frame.junction.method->call_type!=Method::CT_STATIC) {
887: // this is a constructor call
888: HashStringValue& new_object_fields=*new HashStringValue();
889: if(Value* value=called_class.create_new_value(fpool, new_object_fields)) {
890: // some stateless_class creatable derivates
891: new_self=value;
892: } else
893: throw Exception(PARSER_RUNTIME,
894: 0, //&frame.name(),
895: "is not a constructor, system class '%s' can be constructed only implicitly",
896: called_class.name().cstr());
897:
898: frame.write(*new_self,
899: String::L_CLEAN // not used, always an object, not string
900: );
901: } else
902: throw Exception(PARSER_RUNTIME,
903: 0, //&frame.name(),
904: "method is static and can not be used as constructor");
905: } else
906: new_self=&frame.junction.self;
907:
908: frame.set_self(*new_self);
909:
910: // see OP_PREPARE_TO_EXPRESSION
911: frame.set_in_expression(wcontext->get_in_expression());
912:
913: rcontext=wcontext=&frame;
914: {
915: const Method& method=*frame.junction.method;
916: Method::Call_type call_type=&called_class==new_self ? Method::CT_STATIC : Method::CT_DYNAMIC;
917: if(
918: method.call_type==Method::CT_ANY ||
919: method.call_type==call_type) { // allowed call type?
920: method_frame=&frame;
921: if(method.native_code) { // native code?
922: method.check_actual_numbered_params(
923: frame.junction.self,
924: /*frame.name(), */frame.numbered_params());
925: method.native_code(
926: *this,
927: *frame.numbered_params()); // execute it
928: } else // parser code, execute it
929: recoursion_checked_execute(*method.parser_code);
930: } else
931: throw Exception(PARSER_RUNTIME,
932: 0, //&frame.name(),
933: "is not allowed to be called %s",
934: call_type==Method::CT_STATIC?"statically":"dynamically");
935: }
936:
937: WContext *result_wcontext=wcontext;
938: // StringOrValue result=wcontext->result();
939:
940: wcontext=saved_wcontext;
941: rcontext=saved_rcontext;
942: method_frame=saved_method_frame;
943:
944: return result_wcontext;
945: }
946:
947:
1.292 paf 948: /**
949: @todo cache|prepare junctions
950: @bug ^superbase:method would dynamically call ^base:method if there is any
951: */
1.297 paf 952: Value& Request::get_element(Value& ncontext, const String& name, bool can_call_operator) {
953: Value* value=0;
1.249 paf 954: if(can_call_operator) {
1.325 misha 955: if(Method* method=main_class.get_method(name)){ // looking operator of that name FIRST
956: if(!method->junction_template)
957: method->junction_template=new VJunction(main_class, method);
958: return *method->junction_template;
959: }
1.249 paf 960: }
961: if(!value) {
962: if(!wcontext->get_constructing() // not constructing
963: && wcontext->get_somebody_entered_some_class() ) // ^class:method
1.297 paf 964: if(VStateless_class *called_class=ncontext.get_class())
1.249 paf 965: if(VStateless_class *read_class=rcontext->get_class())
966: if(read_class->derived_from(*called_class)) // current derived from called
1.297 paf 967: if(Value* base=get_self().base()) { // doing DYNAMIC call
1.290 paf 968: Temp_derived temp_derived(*base, 0); // temporarily prevent go-back-down virtual calls
1.320 misha 969: value=base->get_element(name, *base, true); // virtual-up lookup starting from parent
1.289 paf 970: goto value_ready;
1.249 paf 971: }
972: }
1.216 paf 973: if(!value)
1.320 misha 974: value=ncontext.get_element(name, ncontext, true);
1.291 paf 975:
976: if(value && wcontext->get_constructing())
1.297 paf 977: if(Junction* junction=value->get_junction()) {
978: if(junction->self.get_class()!=&ncontext)
1.316 misha 979: throw Exception(PARSER_RUNTIME,
1.291 paf 980: &name,
1.297 paf 981: "constructor must be declared in class '%s'",
982: ncontext.get_class()->name_cstr());
1.291 paf 983: }
1.249 paf 984:
1.289 paf 985: value_ready:
1.284 paf 986: if(value)
1.294 paf 987: value=&process_to_value(*value); // process possible code-junction
1.284 paf 988: else
1.324 misha 989: value=VVoid::get();
1.63 paf 990:
1.297 paf 991: return *value;
1.309 paf 992: }
993:
994: void Request::put_element(Value& ncontext, const String& name, Value& value) {
995: // put_element can return property-setting-junction
1.312 paf 996: if(const VJunction* vjunction=ncontext.put_element(ncontext, name, &value, false))
997: if(vjunction!=PUT_ELEMENT_REPLACED_ELEMENT) {
998: const Junction& junction=vjunction->junction();
1.309 paf 999: // process it
1.312 paf 1000: ArrayString* params_names=junction.method->params_names;
1.309 paf 1001: int param_count=params_names? params_names->count(): 0;
1002: if(param_count!=1)
1.316 misha 1003: throw Exception(PARSER_RUNTIME,
1.309 paf 1004: 0,
1005: "setter method must have ONE parameter (has %d parameters)", param_count);
1006:
1.321 misha 1007: VMethodFrame frame(junction, method_frame/*caller*/);
1.309 paf 1008: frame.store_param(value);
1009:
1010: frame.set_self(frame.junction.self);
1011:
1012: VMethodFrame *saved_method_frame=method_frame;
1013: Value* saved_rcontext=rcontext;
1014: WContext *saved_wcontext=wcontext;
1015:
1016: rcontext=wcontext=&frame;
1017: method_frame=&frame;
1018:
1.311 paf 1019: // prevent non-string writes for better error reporting [setters are not expected to return anything]
1.309 paf 1020: wcontext->write(*method_frame);
1021:
1022: recoursion_checked_execute(*frame.junction.method->parser_code); // parser code, execute it
1023: // we don't need it StringOrValue result=wcontext->result();
1024:
1025: method_frame=saved_method_frame;
1026: wcontext=saved_wcontext;
1027: rcontext=saved_rcontext;
1028: }
1.34 paf 1029: }
1.70 paf 1030:
1.162 parser 1031: /** @param intercept_string
1.116 paf 1032: - true:
1033: they want result=string value,
1034: possible object result goes to wcontext
1035: - false:
1036: they want any result[string|object]
1037: nothing goes to wcontext.
1.125 paf 1038: used in @c (expression) params evaluation
1.224 paf 1039:
1040: using the fact it's either string_ or value_ result requested to speed up checkes
1.116 paf 1041: */
1.229 paf 1042: StringOrValue Request::process(Value& input_value, bool intercept_string) {
1.297 paf 1043: Junction* junction=input_value.get_junction();
1.307 paf 1044: if(junction) {
1045: if(junction->is_getter) { // is it a getter-junction?
1.320 misha 1046: int param_count=junction->method->params_names?junction->method->params_names->count():0;
1047: if(junction->auto_name){ // default getter
1048: if(param_count>1)
1049: throw Exception(PARSER_RUNTIME,
1050: 0,
1051: "default getter method can't have more then 1 parameter (has %d parameters)", param_count);
1052: } else if(param_count)
1.316 misha 1053: throw Exception(PARSER_RUNTIME,
1.307 paf 1054: 0,
1.320 misha 1055: "getter method must have no parameters (has %d parameters)", param_count);
1.307 paf 1056:
1.321 misha 1057: VMethodFrame frame(*junction, method_frame/*caller*/);
1.317 misha 1058:
1.320 misha 1059: if(junction->auto_name && param_count)
1060: frame.store_param(*new VString(*junction->auto_name));
1061:
1.307 paf 1062: frame.set_self(frame.junction.self);
1063:
1064: VMethodFrame *saved_method_frame=method_frame;
1065: Value* saved_rcontext=rcontext;
1066: WContext *saved_wcontext=wcontext;
1067:
1068: rcontext=wcontext=&frame;
1069: method_frame=&frame;
1070:
1071: recoursion_checked_execute(*frame.junction.method->parser_code); // parser code, execute it
1072: StringOrValue result=wcontext->result();
1073:
1074: method_frame=saved_method_frame;
1075: wcontext=saved_wcontext;
1076: rcontext=saved_rcontext;
1077:
1078: return result;
1079: }
1080:
1081: if(junction->code) { // is it a code-junction?
1082: // process it
1083: StringOrValue result;
1.157 parser 1084: #ifdef DEBUG_EXECUTE
1.307 paf 1085: debug_printf(sapi_info, "ja->\n");
1.157 parser 1086: #endif
1.238 paf 1087:
1.307 paf 1088: if(!junction->method_frame)
1.316 misha 1089: throw Exception(PARSER_RUNTIME,
1.240 paf 1090: 0,
1091: "junction used outside of context");
1092:
1.307 paf 1093: VMethodFrame *saved_method_frame=method_frame;
1094: Value* saved_rcontext=rcontext;
1095: WContext *saved_wcontext=wcontext;
1096:
1097: method_frame=junction->method_frame;
1098: rcontext=junction->rcontext;
1099:
1100: // for expression method params
1101: // wcontext is set 0
1102: // using the fact in decision "which wwrapper to use"
1103: bool using_code_frame=intercept_string && junction->wcontext;
1104: if(using_code_frame) {
1.318 misha 1105: // almost plain wwrapper about junction wcontext
1106:
1107: VCodeFrame local(*junction->wcontext);
1.307 paf 1108: wcontext=&local;
1109:
1110: // execute it
1111: recoursion_checked_execute(*junction->code);
1112:
1113: // CodeFrame soul:
1.318 misha 1114: result=wcontext->result();
1.307 paf 1115: } else {
1116: // plain wwrapper
1117: WWrapper local(0/*empty*/, wcontext);
1118: wcontext=&local;
1119:
1120: // execute it
1121: recoursion_checked_execute(*junction->code);
1122:
1123: result=wcontext->result();
1124: }
1125:
1126: wcontext=saved_wcontext;
1127: rcontext=saved_rcontext;
1128: method_frame=saved_method_frame;
1.207 paf 1129:
1.157 parser 1130: #ifdef DEBUG_EXECUTE
1.307 paf 1131: debug_printf(sapi_info, "<-ja returned");
1.157 parser 1132: #endif
1.307 paf 1133: return result;
1134: }
1135:
1136: // it is then method-junction, do not explode it
1137: // just return it as we do for usual objects
1138: }
1139:
1140: return input_value;
1.85 paf 1141: }
1142:
1.298 paf 1143: StringOrValue Request::execute_method(VMethodFrame& amethod_frame, const Method& method) {
1.257 paf 1144: VMethodFrame *saved_method_frame=method_frame;
1.297 paf 1145: Value* saved_rcontext=rcontext;
1.257 paf 1146: WContext *saved_wcontext=wcontext;
1.99 paf 1147:
1148: // initialize contexts
1.286 paf 1149: rcontext=wcontext=method_frame=&amethod_frame;
1.99 paf 1150:
1151: // execute!
1152: execute(*method.parser_code);
1153:
1154: // result
1.298 paf 1155: StringOrValue result=wcontext->result();
1.208 paf 1156:
1.257 paf 1157: wcontext=saved_wcontext;
1158: rcontext=saved_rcontext;
1159: method_frame=saved_method_frame;
1.242 paf 1160:
1161: // return
1162: return result;
1.208 paf 1163: }
1164:
1.297 paf 1165: const String* Request::execute_method(Value& aself,
1166: const Method& method, VString* optional_param,
1167: bool do_return_string) {
1.317 misha 1168:
1.257 paf 1169: VMethodFrame *saved_method_frame=method_frame;
1.297 paf 1170: Value* saved_rcontext=rcontext;
1.257 paf 1171: WContext *saved_wcontext=wcontext;
1.208 paf 1172:
1.307 paf 1173: Junction local_junction(aself, &method);
1.321 misha 1174: VMethodFrame local_frame(local_junction, method_frame/*caller*/);
1.242 paf 1175: if(optional_param && local_frame.can_store_param()) {
1.297 paf 1176: local_frame.store_param(*optional_param);
1.242 paf 1177: local_frame.fill_unspecified_params();
1178: }
1.285 paf 1179: local_frame.set_self(aself);
1.257 paf 1180: rcontext=wcontext=method_frame=&local_frame;
1.246 paf 1181:
1182: // prevent non-string writes for better error reporting
1.297 paf 1183: if(do_return_string)
1.246 paf 1184: wcontext->write(local_frame);
1.208 paf 1185:
1186: // execute!
1187: execute(*method.parser_code);
1188:
1189: // result
1.297 paf 1190: const String* result=0;
1191: if(do_return_string)
1192: result=&wcontext->result().as_string();
1.99 paf 1193:
1.257 paf 1194: wcontext=saved_wcontext;
1195: rcontext=saved_rcontext;
1196: method_frame=saved_method_frame;
1.297 paf 1197:
1198: return result;
1.242 paf 1199: }
1200:
1.297 paf 1201: Request::Execute_nonvirtual_method_result
1202: Request::execute_nonvirtual_method(VStateless_class& aclass,
1.317 misha 1203: const String& method_name,
1204: VString* optional_param,
1.297 paf 1205: bool do_return_string) {
1206: Execute_nonvirtual_method_result result;
1207: result.method=aclass.get_method(method_name);
1208: if(result.method)
1.317 misha 1209: result.string=execute_method(aclass, *result.method, optional_param, do_return_string);
1.297 paf 1210: return result;
1.99 paf 1211: }
1212:
1.297 paf 1213: const String* Request::execute_virtual_method(Value& aself,
1214: const String& method_name) {
1215: if(Value* value=aself.get_element(method_name, aself, false))
1216: if(Junction* junction=value->get_junction())
1217: if(const Method *method=junction->method)
1218: return execute_method(aself, *method, 0/*no params*/, true);
1.188 parser 1219:
1.176 parser 1220: return 0;
1221: }