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1.117 paf 1: /** @file
1.118 paf 2: Parser: executor part of request class.
3:
1.88 paf 4: Copyright (c) 2001 ArtLebedev Group (http://www.artlebedev.com)
1.192 ! parser 5: Author: Alexander Petrosyan <paf@design.ru> (http://design.ru/paf)
1.118 paf 6:
1.192 ! parser 7: $Id: $
1.1 paf 8: */
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"
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"
1.1 paf 24:
1.157 parser 25: //#define DEBUG_EXECUTE
26:
1.188 parser 27: const uint ANTI_ENDLESS_EXECUTE_RECOURSION=400;
1.24 paf 28:
1.157 parser 29: #ifdef DEBUG_EXECUTE
1.1 paf 30: char *opcode_name[]={
1.49 paf 31: // literals
1.109 paf 32: "VALUE", "CURLY_CODE__STORE_PARAM", "EXPR_CODE__STORE_PARAM",
1.49 paf 33:
34: // actions
1.187 parser 35: "WITH_ROOT", "WITH_SELF", "WITH_READ", "WITH_WRITE",
1.66 paf 36: "GET_CLASS",
1.182 parser 37: "CONSTRUCT_VALUE", "CONSTRUCT_EXPR", "CURLY_CODE__CONSTRUCT",
1.108 paf 38: "WRITE_VALUE", "WRITE_EXPR_RESULT", "STRING__WRITE",
1.18 paf 39: "GET_ELEMENT", "GET_ELEMENT__WRITE",
1.1 paf 40: "CREATE_EWPOOL", "REDUCE_EWPOOL",
1.49 paf 41: "CREATE_SWPOOL", "REDUCE_SWPOOL",
1.1 paf 42: "GET_METHOD_FRAME",
43: "STORE_PARAM",
1.186 parser 44: "PREPARE_TO_CONSTRUCT_OBJECT", "CALL",
1.49 paf 45:
46: // expression ops: unary
1.148 paf 47: "NEG", "INV", "NOT", "DEF", "IN", "FEXISTS", "DEXISTS",
1.49 paf 48: // expression ops: binary
49: "SUB", "ADD", "MUL", "DIV", "MOD",
1.56 paf 50: "BIN_AND", "BIN_OR", "BIN_XOR",
51: "LOG_AND", "LOG_OR", "LOG_XOR",
1.49 paf 52: "NUM_LT", "NUM_GT", "NUM_LE", "NUM_GE", "NUM_EQ", "NUM_NE",
1.103 paf 53: "STR_LT", "STR_GT", "STR_LE", "STR_GE", "STR_EQ", "STR_NE",
54: "IS"
1.1 paf 55: };
56:
1.158 parser 57: void va_debug_printf(Pool& pool, const char *fmt,va_list args) {
1.127 paf 58: char buf[MAX_STRING];
59: vsnprintf(buf, MAX_STRING, fmt, args);
60: SAPI::log(pool, "%s", buf);
1.107 paf 61: }
62:
1.158 parser 63: void debug_printf(Pool& pool, const char *fmt, ...) {
1.107 paf 64: va_list args;
65: va_start(args,fmt);
1.158 parser 66: va_debug_printf(pool,fmt,args);
1.107 paf 67: va_end(args);
1.105 paf 68: }
69:
1.158 parser 70: void debug_dump(Pool& pool, int level, const Array& ops) {
1.190 parser 71: Array_iter i(ops);
72: while(i.has_next()) {
1.23 paf 73: Operation op;
1.190 parser 74: op.cast=i.next();
1.1 paf 75:
1.86 paf 76: if(op.code==OP_VALUE || op.code==OP_STRING__WRITE) {
1.190 parser 77: Value *value=static_cast<Value *>(i.next());
1.158 parser 78: debug_printf(pool,
1.133 paf 79: "%*s%s"
80: " \"%s\" %s",
81: level*4, "", opcode_name[op.code],
82: value->get_string()->cstr(), value->type());
83: continue;
1.15 paf 84: }
1.158 parser 85: debug_printf(pool, "%*s%s", level*4, "", opcode_name[op.code]);
1.1 paf 86:
1.184 parser 87: switch(op.code) {
88: case OP_CURLY_CODE__STORE_PARAM:
89: case OP_EXPR_CODE__STORE_PARAM:
90: case OP_CURLY_CODE__CONSTRUCT:
1.190 parser 91: const Array *local_ops=reinterpret_cast<const Array *>(i.next());
1.158 parser 92: debug_dump(pool, level+1, *local_ops);
1.1 paf 93: }
94: }
95: }
1.157 parser 96: #endif
1.1 paf 97:
1.159 parser 98: #define PUSH(value) stack.push(value)
99: #define POP() static_cast<Value *>(stack.pop())
100: #define POP_NAME() static_cast<Value *>(stack.pop())->as_string()
101:
1.32 paf 102: void Request::execute(const Array& ops) {
1.157 parser 103: #ifdef DEBUG_EXECUTE
1.158 parser 104: debug_printf(pool(), "source----------------------------\n");
105: debug_dump(pool(), 0, ops);
106: debug_printf(pool(), "execution-------------------------\n");
1.157 parser 107: #endif
1.12 paf 108:
1.190 parser 109: Array_iter i(ops);
110: while(i.has_next()) {
1.23 paf 111: Operation op;
1.190 parser 112: op.cast=i.next();
1.157 parser 113: #ifdef DEBUG_EXECUTE
1.158 parser 114: debug_printf(pool(), "%d:%s", stack.top_index()+1, opcode_name[op.code]);
1.157 parser 115: #endif
1.11 paf 116:
1.23 paf 117: switch(op.code) {
1.51 paf 118: // param in next instruction
1.52 paf 119: case OP_VALUE:
1.32 paf 120: {
1.190 parser 121: Value *value=static_cast<Value *>(i.next());
1.157 parser 122: #ifdef DEBUG_EXECUTE
1.158 parser 123: debug_printf(pool(), " \"%s\" %s", value->get_string()->cstr(), value->type());
1.157 parser 124: #endif
1.52 paf 125: PUSH(value);
1.32 paf 126: break;
127: }
1.109 paf 128: case OP_CURLY_CODE__STORE_PARAM:
129: case OP_EXPR_CODE__STORE_PARAM:
1.32 paf 130: {
1.73 paf 131: VMethodFrame *frame=static_cast<VMethodFrame *>(stack.top_value());
1.65 paf 132: // code
1.190 parser 133: const Array *local_ops=reinterpret_cast<const Array *>(i.next());
1.157 parser 134: #ifdef DEBUG_EXECUTE
1.158 parser 135: debug_printf(pool(), " (%d)\n", local_ops->size());
136: debug_dump(pool(), 1, *local_ops);
1.157 parser 137: #endif
1.109 paf 138: // when they evaluate expression parameter,
139: // the object expression result
140: // does not need to be written into calling frame
141: // it must go into any expressions using that parameter
1.146 paf 142: // hence, we zero junction.wcontext here, and later
143: // in .process we would test that field
1.109 paf 144: // in decision "which wwrapper to use"
1.32 paf 145: Junction& j=*NEW Junction(pool(),
1.45 paf 146: *self, 0, 0,
1.130 paf 147: root,
1.149 paf 148: rcontext,
149: op.code==OP_EXPR_CODE__STORE_PARAM?0:wcontext,
1.130 paf 150: local_ops);
1.32 paf 151:
152: Value *value=NEW VJunction(j);
1.65 paf 153:
154: // store param
1.92 paf 155: frame->store_param(frame->name(), value);
1.32 paf 156: break;
157: }
1.66 paf 158: case OP_GET_CLASS:
1.38 paf 159: {
1.130 paf 160: // maybe they do ^class:method[] call, remember the fact
1.98 paf 161: wcontext->set_somebody_entered_some_class();
162:
1.82 paf 163: const String& name=POP_NAME();
1.120 paf 164: Value *value=static_cast<Value *>(classes().get(name));
165: if(!value)
1.66 paf 166: THROW(0,0,
167: &name,
1.143 paf 168: "class is undefined");
1.66 paf 169:
1.120 paf 170: PUSH(value);
1.38 paf 171: break;
172: }
1.32 paf 173:
1.51 paf 174: // OP_WITH
1.187 parser 175: case OP_WITH_ROOT:
176: {
177: PUSH(root);
178: break;
179: }
1.37 paf 180: case OP_WITH_SELF:
181: {
182: PUSH(self);
183: break;
184: }
1.15 paf 185: case OP_WITH_READ:
186: {
1.24 paf 187: PUSH(rcontext);
1.20 paf 188: break;
189: }
1.37 paf 190: case OP_WITH_WRITE:
1.20 paf 191: {
1.37 paf 192: PUSH(wcontext);
1.20 paf 193: break;
194: }
1.37 paf 195:
1.51 paf 196: // OTHER ACTIONS BUT WITHs
1.80 paf 197: case OP_CONSTRUCT_VALUE:
1.20 paf 198: {
1.37 paf 199: Value *value=POP();
1.82 paf 200: const String& name=POP_NAME();
1.37 paf 201: Value *ncontext=POP();
1.81 paf 202: ncontext->put_element(name, value);
1.37 paf 203: value->set_name(name);
1.15 paf 204: break;
205: }
1.80 paf 206: case OP_CONSTRUCT_EXPR:
207: {
208: Value *value=POP();
1.82 paf 209: const String& name=POP_NAME();
1.80 paf 210: Value *ncontext=POP();
1.128 paf 211: ncontext->put_element(name, value->as_expr_result());
1.80 paf 212: value->set_name(name);
213: break;
214: }
1.182 parser 215: case OP_CURLY_CODE__CONSTRUCT:
216: {
1.190 parser 217: const Array *local_ops=reinterpret_cast<const Array *>(i.next());
1.182 parser 218: #ifdef DEBUG_EXECUTE
219: debug_printf(pool(), " (%d)\n", local_ops->size());
220: debug_dump(pool(), 1, *local_ops);
221: #endif
222: Junction& j=*NEW Junction(pool(),
223: *self, 0, 0,
224: root,
225: rcontext,
226: wcontext,
227: local_ops);
228:
229: Value *value=NEW VJunction(j);
230: const String& name=POP_NAME();
231: Value *ncontext=POP();
232: ncontext->put_element(name, value);
233: value->set_name(name);
234: break;
235: }
1.108 paf 236: case OP_WRITE_VALUE:
1.13 paf 237: {
1.24 paf 238: Value *value=POP();
1.92 paf 239: write_assign_lang(*value);
1.150 paf 240:
241: // forget the fact they've entered some ^object.method[].
242: // see OP_GET_ELEMENT
243: wcontext->clear_somebody_entered_some_object();
1.86 paf 244: break;
245: }
1.108 paf 246: case OP_WRITE_EXPR_RESULT:
247: {
248: Value *value=POP();
1.128 paf 249: write_expr_result(*value->as_expr_result());
1.108 paf 250: break;
251: }
1.86 paf 252: case OP_STRING__WRITE:
253: {
1.190 parser 254: VString *vstring=static_cast<VString *>(i.next());
1.157 parser 255: #ifdef DEBUG_EXECUTE
1.158 parser 256: debug_printf(pool(), " \"%s\"", vstring->string().cstr());
1.157 parser 257: #endif
1.122 paf 258: write_no_lang(vstring->string());
1.13 paf 259: break;
1.14 paf 260: }
1.13 paf 261:
1.15 paf 262: case OP_GET_ELEMENT:
1.11 paf 263: {
1.150 paf 264: // maybe they do ^object.method[] call, remember the fact
265: wcontext->inc_somebody_entered_some_object();
266:
1.174 parser 267: //_asm int 3;
1.17 paf 268: Value *value=get_element();
1.24 paf 269: PUSH(value);
1.17 paf 270: break;
271: }
272:
1.18 paf 273: case OP_GET_ELEMENT__WRITE:
1.17 paf 274: {
275: Value *value=get_element();
1.92 paf 276: write_assign_lang(*value);
1.17 paf 277: break;
278: }
279:
1.32 paf 280:
1.17 paf 281: case OP_CREATE_EWPOOL:
282: {
1.24 paf 283: PUSH(wcontext);
1.137 paf 284: PUSH((void *)flang);
285: flang=String::UL_PASS_APPENDED;
1.186 parser 286: wcontext=NEW WWrapper(pool(), 0 /*empty*/);
1.17 paf 287: break;
288: }
289: case OP_REDUCE_EWPOOL:
290: {
1.36 paf 291: Value *value=wcontext->result();
1.137 paf 292: flang=static_cast<String::Untaint_lang>(reinterpret_cast<int>(POP()));
1.25 paf 293: wcontext=static_cast<WContext *>(POP());
1.24 paf 294: PUSH(value);
1.13 paf 295: break;
1.15 paf 296: }
1.13 paf 297:
1.49 paf 298: case OP_CREATE_SWPOOL:
299: {
300: PUSH(wcontext);
1.186 parser 301: wcontext=NEW WWrapper(pool(), 0 /*empty*/);
1.49 paf 302: break;
303: }
304: case OP_REDUCE_SWPOOL:
305: {
306: // from "$a $b" part of expression taking only string value,
307: // ignoring any other content of wcontext
1.82 paf 308: const String *string=wcontext->get_string();
1.80 paf 309: Value *value;
310: if(string)
311: value=NEW VString(*string);
312: else
1.167 parser 313: NEW VVoid(pool());
1.50 paf 314: wcontext=static_cast<WContext *>(POP());
1.49 paf 315: PUSH(value);
316: break;
317: }
318:
1.51 paf 319: // CALL
1.28 paf 320: case OP_GET_METHOD_FRAME:
321: {
1.32 paf 322: Value *value=POP();
1.138 paf 323:
1.111 paf 324: // info:
325: // code compiled so that this one's always method-junction,
326: // not a code-junction
1.32 paf 327: Junction *junction=value->get_junction();
1.31 paf 328: if(!junction)
1.185 parser 329: THROW(0, 0,
1.42 paf 330: &value->name(),
1.111 paf 331: "(%s) not a method or junction, can not call it",
1.38 paf 332: value->type());
1.70 paf 333:
1.185 parser 334: VMethodFrame *frame=NEW VMethodFrame(pool(), value->name(), *junction);
1.28 paf 335: PUSH(frame);
336: break;
337: }
338: case OP_STORE_PARAM:
339: {
340: Value *value=POP();
1.73 paf 341: VMethodFrame *frame=static_cast<VMethodFrame *>(stack.top_value());
1.92 paf 342: frame->store_param(frame->name(), value);
1.29 paf 343: break;
344: }
345:
1.186 parser 346: case OP_PREPARE_TO_CONSTRUCT_OBJECT:
347: {
348: wcontext->constructing(true);
349: break;
350: }
351: case OP_CALL:
1.29 paf 352: {
1.157 parser 353: #ifdef DEBUG_EXECUTE
1.158 parser 354: debug_printf(pool(), "->\n");
1.157 parser 355: #endif
1.34 paf 356: VMethodFrame *frame=static_cast<VMethodFrame *>(POP());
357: frame->fill_unspecified_params();
1.45 paf 358: PUSH(self);
359: PUSH(root);
360: PUSH(rcontext);
361: PUSH(wcontext);
362:
1.100 paf 363: VStateless_class *called_class=frame->junction.self.get_class();
1.186 parser 364: if(wcontext->constructing()) {
365: wcontext->constructing(false);
1.185 parser 366: if(frame->junction.method->call_type!=Method::CT_STATIC) {
1.138 paf 367: // this is a constructor call
1.185 parser 368:
369: if(Value *value=called_class->create_new_value(pool())) {
370: // some stateless_object creatable derivates
1.149 paf 371: self=value;
1.185 parser 372: } else {
373: // stateful object
1.94 paf 374: self=NEW VObject(pool(), *called_class);
1.185 parser 375: }
1.83 paf 376: frame->write(*self,
1.136 paf 377: String::UL_CLEAN // not used, always an object, not string
1.83 paf 378: );
1.185 parser 379: } else
380: THROW(0, 0,
381: &frame->name(),
382: "method is static and can not be used as constructor");
383: } else {
384: // this is not constructor call
385:
386: // not ^name.method call, name:method call; and
387: // is context object or class & is it my class or my parent's class and?
388: VStateless_class *read_class=rcontext->get_class();
389: if(
390: !(wcontext->somebody_entered_some_object() &&
391: !wcontext->somebody_entered_some_class()) &&
392: read_class && read_class->is_or_derived_from(*called_class)) // yes
393: self=rcontext; // dynamic call
394: else // no, not me or relative of mine (=total stranger)
395: self=&frame->junction.self; // static call
396: }
1.75 paf 397:
1.45 paf 398: frame->set_self(*self);
1.29 paf 399: root=rcontext=wcontext=frame;
1.47 paf 400: {
1.48 paf 401: // take object or class from any wrappers
1.102 paf 402: // and substitute class alias to the class they are called AS
403: Temp_alias temp_alias(*self->get_aliased(), *frame->junction.vclass);
1.68 paf 404:
1.99 paf 405: const Method& method=*frame->junction.method;
1.134 paf 406: Method::Call_type call_type=
407: called_class==self ? Method::CT_STATIC : Method::CT_DYNAMIC;
408: if(
409: method.call_type==Method::CT_ANY ||
410: method.call_type==call_type) // allowed call type?
411: if(method.native_code) { // native code?
1.154 paf 412: method.check_actual_numbered_params(pool(),
1.134 paf 413: frame->junction.self,
414: frame->name(), frame->numbered_params());
1.160 parser 415: method.native_code(
1.134 paf 416: *this,
417: frame->name(), frame->numbered_params()); // execute it
1.159 parser 418: } else { // parser code
419: if(++anti_endless_execute_recoursion==ANTI_ENDLESS_EXECUTE_RECOURSION) {
420: anti_endless_execute_recoursion=0; // give @exception a chance
421: THROW(0, 0,
1.160 parser 422: &frame->name(),
1.159 parser 423: "endless recursion detected");
424: }
425:
1.134 paf 426: execute(*method.parser_code); // execute it
1.159 parser 427: anti_endless_execute_recoursion--;
428: }
1.134 paf 429: else
430: THROW(0, 0,
431: &frame->name(),
432: "is not allowed to be called %s",
433: call_type==Method::CT_STATIC?"statically":"dynamically");
434:
1.47 paf 435: }
1.36 paf 436: Value *value=wcontext->result();
1.45 paf 437:
438: wcontext=static_cast<WContext *>(POP());
439: rcontext=POP();
440: root=POP();
441: self=static_cast<VAliased *>(POP());
1.62 paf 442:
1.61 paf 443: PUSH(value);
1.157 parser 444: #ifdef DEBUG_EXECUTE
1.158 parser 445: debug_printf(pool(), "<-returned");
1.157 parser 446: #endif
1.49 paf 447: break;
448: }
449:
1.55 paf 450: // expression ops: unary
451: case OP_NEG:
452: {
453: Value *operand=POP();
1.128 paf 454: Value *value=NEW VDouble(pool(), -operand->as_double());
1.55 paf 455: PUSH(value);
456: break;
457: }
458: case OP_INV:
459: {
460: Value *operand=POP();
1.155 parser 461: Value *value=NEW VDouble(pool(), ~operand->as_int());
1.55 paf 462: PUSH(value);
463: break;
464: }
465: case OP_NOT:
466: {
467: Value *operand=POP();
1.128 paf 468: Value *value=NEW VBool(pool(), !operand->as_bool());
1.55 paf 469: PUSH(value);
470: break;
471: }
1.62 paf 472: case OP_DEF:
473: {
474: Value *operand=POP();
1.128 paf 475: Value *value=NEW VBool(pool(), operand->is_defined());
1.62 paf 476: PUSH(value);
477: break;
478: }
479: case OP_IN:
480: {
481: Value *operand=POP();
1.110 paf 482: const char *path=operand->as_string().cstr();
1.151 paf 483: Value *value=NEW VBool(pool(),
484: info.uri && strncmp(path, info.uri, strlen(path))==0);
1.62 paf 485: PUSH(value);
486: break;
487: }
488: case OP_FEXISTS:
489: {
490: Value *operand=POP();
1.127 paf 491: Value *value=NEW VBool(pool(),
492: file_readable(absolute(operand->as_string())));
1.148 paf 493: PUSH(value);
494: break;
495: }
496: case OP_DEXISTS:
497: {
498: Value *operand=POP();
499: Value *value=NEW VBool(pool(),
500: dir_readable(absolute(operand->as_string())));
1.62 paf 501: PUSH(value);
502: break;
503: }
1.55 paf 504:
505: // expression ops: binary
506: case OP_SUB:
1.53 paf 507: {
1.61 paf 508: Value *b=POP(); Value *a=POP();
1.128 paf 509: Value *value=NEW VDouble(pool(), a->as_double() - b->as_double());
1.53 paf 510: PUSH(value);
511: break;
512: }
1.55 paf 513: case OP_ADD:
1.53 paf 514: {
1.61 paf 515: Value *b=POP(); Value *a=POP();
1.128 paf 516: Value *value=NEW VDouble(pool(), a->as_double() + b->as_double());
1.53 paf 517: PUSH(value);
518: break;
519: }
1.49 paf 520: case OP_MUL:
521: {
1.61 paf 522: Value *b=POP(); Value *a=POP();
1.128 paf 523: Value *value=NEW VDouble(pool(), a->as_double() * b->as_double());
1.53 paf 524: PUSH(value);
525: break;
526: }
527: case OP_DIV:
528: {
1.61 paf 529: Value *b=POP(); Value *a=POP();
1.170 parser 530:
531: double a_double=a->as_double();
532: double b_double=b->as_double();
533:
1.171 parser 534: if(b_double == 0) {
535: const String *problem_source=&b->as_string();
536: #ifndef NO_STRING_ORIGIN
537: if(!problem_source->origin().file)
1.172 parser 538: problem_source=&b->name();
1.171 parser 539: #endif
1.170 parser 540: THROW(0, 0,
1.171 parser 541: problem_source,
1.170 parser 542: "Division by zero");
1.171 parser 543: }
1.170 parser 544:
1.171 parser 545: Value *value=NEW VDouble(pool(), a_double / b_double);
1.54 paf 546: PUSH(value);
547: break;
548: }
1.55 paf 549: case OP_MOD:
550: {
1.61 paf 551: Value *b=POP(); Value *a=POP();
1.170 parser 552:
1.173 parser 553: double a_double=a->as_double();
554: double b_double=b->as_double();
1.170 parser 555:
1.173 parser 556: if(b_double == 0) {
1.171 parser 557: const String *problem_source=&b->as_string();
558: #ifndef NO_STRING_ORIGIN
559: if(!problem_source->origin().file)
1.172 parser 560: problem_source=&b->name();
1.171 parser 561: #endif
1.170 parser 562: THROW(0, 0,
1.171 parser 563: problem_source,
1.170 parser 564: "Modulus by zero");
1.171 parser 565: }
1.170 parser 566:
1.173 parser 567: Value *value=NEW VDouble(pool(), fmod(a_double, b_double));
1.55 paf 568: PUSH(value);
569: break;
570: }
571: case OP_BIN_AND:
1.54 paf 572: {
1.61 paf 573: Value *b=POP(); Value *a=POP();
1.78 paf 574: Value *value=NEW VDouble(pool(),
1.155 parser 575: a->as_int() &
576: b->as_int());
1.54 paf 577: PUSH(value);
578: break;
579: }
1.55 paf 580: case OP_BIN_OR:
1.54 paf 581: {
1.61 paf 582: Value *b=POP(); Value *a=POP();
1.78 paf 583: Value *value=NEW VDouble(pool(),
1.155 parser 584: a->as_int() |
585: b->as_int());
1.55 paf 586: PUSH(value);
587: break;
588: }
1.56 paf 589: case OP_BIN_XOR:
590: {
1.61 paf 591: Value *b=POP(); Value *a=POP();
1.78 paf 592: Value *value=NEW VDouble(pool(),
1.155 parser 593: a->as_int() ^
594: b->as_int());
1.56 paf 595: PUSH(value);
596: break;
597: }
1.55 paf 598: case OP_LOG_AND:
599: {
1.61 paf 600: Value *b=POP(); Value *a=POP();
1.128 paf 601: Value *value=NEW VBool(pool(), a->as_bool() && b->as_bool());
1.55 paf 602: PUSH(value);
603: break;
604: }
605: case OP_LOG_OR:
606: {
1.61 paf 607: Value *b=POP(); Value *a=POP();
1.128 paf 608: Value *value=NEW VBool(pool(), a->as_bool() || b->as_bool());
1.56 paf 609: PUSH(value);
610: break;
611: }
612: case OP_LOG_XOR:
613: {
1.61 paf 614: Value *b=POP(); Value *a=POP();
1.128 paf 615: Value *value=NEW VBool(pool(), a->as_bool() ^ b->as_bool());
1.55 paf 616: PUSH(value);
617: break;
618: }
619: case OP_NUM_LT:
620: {
1.61 paf 621: Value *b=POP(); Value *a=POP();
1.128 paf 622: Value *value=NEW VBool(pool(), a->as_double() < b->as_double());
1.55 paf 623: PUSH(value);
624: break;
625: }
626: case OP_NUM_GT:
627: {
1.61 paf 628: Value *b=POP(); Value *a=POP();
1.128 paf 629: Value *value=NEW VBool(pool(), a->as_double() > b->as_double());
1.55 paf 630: PUSH(value);
631: break;
632: }
633: case OP_NUM_LE:
634: {
1.61 paf 635: Value *b=POP(); Value *a=POP();
1.128 paf 636: Value *value=NEW VBool(pool(), a->as_double() <= b->as_double());
1.55 paf 637: PUSH(value);
638: break;
639: }
640: case OP_NUM_GE:
641: {
1.61 paf 642: Value *b=POP(); Value *a=POP();
1.128 paf 643: Value *value=NEW VBool(pool(), a->as_double() >= b->as_double());
1.55 paf 644: PUSH(value);
645: break;
646: }
647: case OP_NUM_EQ:
648: {
1.61 paf 649: Value *b=POP(); Value *a=POP();
1.128 paf 650: Value *value=NEW VBool(pool(), a->as_double() == b->as_double());
1.55 paf 651: PUSH(value);
652: break;
653: }
654: case OP_NUM_NE:
655: {
1.61 paf 656: Value *b=POP(); Value *a=POP();
1.128 paf 657: Value *value=NEW VBool(pool(), a->as_double() != b->as_double());
1.54 paf 658: PUSH(value);
659: break;
660: }
1.58 paf 661: case OP_STR_LT:
662: {
1.61 paf 663: Value *b=POP(); Value *a=POP();
1.78 paf 664: Value *value=NEW VBool(pool(), a->as_string() < b->as_string());
1.58 paf 665: PUSH(value);
666: break;
667: }
668: case OP_STR_GT:
669: {
1.61 paf 670: Value *b=POP(); Value *a=POP();
1.78 paf 671: Value *value=NEW VBool(pool(), a->as_string() > b->as_string());
1.58 paf 672: PUSH(value);
673: break;
674: }
1.55 paf 675: case OP_STR_LE:
1.58 paf 676: {
1.61 paf 677: Value *b=POP(); Value *a=POP();
1.78 paf 678: Value *value=NEW VBool(pool(), a->as_string() <= b->as_string());
1.58 paf 679: PUSH(value);
680: break;
681: }
1.55 paf 682: case OP_STR_GE:
1.54 paf 683: {
1.61 paf 684: Value *b=POP(); Value *a=POP();
1.78 paf 685: Value *value=NEW VBool(pool(), a->as_string() >= b->as_string());
1.58 paf 686: PUSH(value);
687: break;
688: }
689: case OP_STR_EQ:
690: {
1.61 paf 691: Value *b=POP(); Value *a=POP();
1.78 paf 692: Value *value=NEW VBool(pool(), a->as_string() == b->as_string());
1.58 paf 693: PUSH(value);
694: break;
695: }
696: case OP_STR_NE:
697: {
1.61 paf 698: Value *b=POP(); Value *a=POP();
1.78 paf 699: Value *value=NEW VBool(pool(), a->as_string() != b->as_string());
1.103 paf 700: PUSH(value);
701: break;
702: }
703: case OP_IS:
704: {
1.191 parser 705: //_asm int 3;
1.103 paf 706: Value *b=POP(); Value *a=POP();
707: Value *value=NEW VBool(pool(), b->as_string() == a->type());
1.49 paf 708: PUSH(value);
1.28 paf 709: break;
710: }
711:
1.11 paf 712: default:
1.67 paf 713: THROW(0,0,
714: 0,
1.139 paf 715: "invalid opcode %d", op.code);
1.11 paf 716: }
717: }
1.1 paf 718: }
1.17 paf 719:
720: Value *Request::get_element() {
1.82 paf 721: const String& name=POP_NAME();
1.24 paf 722: Value *ncontext=POP();
1.181 parser 723: Value *value=ncontext->get_element(name);
724: if(!value)
725: if(Method* method=OP.get_method(name)) { // maybe operator?
726: // as if that method were in self and we have normal dynamic method here
727: Junction& junction=*NEW Junction(pool(),
1.191 parser 728: *root/*self*/, self->get_class(), method, 0,0,0,0);
1.181 parser 729: value=NEW VJunction(junction);
730: }
1.76 paf 731: if(value)
1.92 paf 732: value=&process(*value, &name); // process possible code-junction
1.76 paf 733: else {
1.167 parser 734: value=NEW VVoid(pool());
1.76 paf 735: value->set_name(name);
736: }
1.63 paf 737:
1.17 paf 738: return value;
1.34 paf 739: }
1.70 paf 740:
1.162 parser 741: /** @param intercept_string
1.116 paf 742: - true:
743: they want result=string value,
744: possible object result goes to wcontext
745: - false:
746: they want any result[string|object]
747: nothing goes to wcontext.
1.125 paf 748: used in @c (expression) params evaluation
1.116 paf 749: */
1.92 paf 750: Value& Request::process(Value& value, const String *name, bool intercept_string) {
1.91 paf 751: Value *result;
1.70 paf 752: Junction *junction=value.get_junction();
753: if(junction && junction->code) { // is it a code-junction?
1.92 paf 754: // process it
1.157 parser 755: #ifdef DEBUG_EXECUTE
1.158 parser 756: debug_printf(pool(), "ja->\n");
1.157 parser 757: #endif
1.70 paf 758: PUSH(self);
759: PUSH(root);
760: PUSH(rcontext);
1.129 paf 761: PUSH(wcontext);
1.70 paf 762:
1.71 paf 763: WContext *frame;
1.109 paf 764: // for expression method params
765: // wcontext is set 0
766: // using the fact in decision "which wwrapper to use"
767: bool using_code_frame=intercept_string && junction->wcontext;
768: if(using_code_frame) {
1.71 paf 769: // almost plain wwrapper about junction wcontext,
770: // BUT intercepts string writes
771: frame=NEW VCodeFrame(pool(), *junction->wcontext);
772: } else {
773: // plain wwrapper
1.186 parser 774: frame=NEW WWrapper(pool(), 0/*empty*/);
1.71 paf 775: }
776:
1.183 parser 777: //frame->set_name(value.name());
1.71 paf 778: wcontext=frame;
1.70 paf 779: self=&junction->self;
780: root=junction->root;
781: rcontext=junction->rcontext;
782: execute(*junction->code);
1.109 paf 783: if(using_code_frame) {
1.71 paf 784: // CodeFrame soul:
785: // string writes were intercepted
786: // returning them as the result of getting code-junction
787: result=NEW VString(*frame->get_string());
788: } else
789: result=frame->result();
1.70 paf 790:
791: wcontext=static_cast<WContext *>(POP());
792: rcontext=POP();
793: root=POP();
794: self=static_cast<VAliased *>(POP());
795:
1.157 parser 796: #ifdef DEBUG_EXECUTE
1.158 parser 797: debug_printf(pool(), "<-ja returned");
1.157 parser 798: #endif
1.70 paf 799: } else
1.91 paf 800: result=&value;
801:
802: if(name)
803: result->set_name(*name);
804: return *result;
1.85 paf 805: }
806:
1.176 parser 807: const String *Request::execute_method(Value& aself, const Method& method,
808: bool return_cstr) {
1.99 paf 809: PUSH(self);
810: PUSH(root);
811: PUSH(rcontext);
812: PUSH(wcontext);
813:
814: // initialize contexts
815: root=rcontext=self=&aself;
1.186 parser 816: wcontext=NEW WWrapper(pool(), &aself);
1.99 paf 817:
818: // execute!
819: execute(*method.parser_code);
820:
821: // result
1.114 paf 822: const String *result;
1.99 paf 823: if(return_cstr)
1.114 paf 824: result=&wcontext->as_string();
1.99 paf 825: else
826: result=0; // ignore result
827:
828: wcontext=static_cast<WContext *>(POP());
829: rcontext=POP();
830: root=POP();
831: self=static_cast<VAliased *>(POP());
832:
833: // return
834: return result;
835: }
836:
1.176 parser 837: const String *Request::execute_virtual_method(Value& aself,
838: const String& method_name,
839: bool return_cstr) {
1.99 paf 840: if(Value *value=aself.get_element(method_name))
841: if(Junction *junction=value->get_junction())
842: if(const Method *method=junction->method)
843: return execute_method(aself, *method, return_cstr);
1.188 parser 844:
1.176 parser 845: return 0;
846: }
847:
1.178 parser 848: const String *Request::execute_nonvirtual_method(VStateless_class& aclass,
1.176 parser 849: const String& method_name,
850: bool return_cstr) {
1.178 parser 851: if(const Method *method=aclass.get_method(method_name))
1.179 parser 852: return execute_method(aclass, *method, return_cstr);
1.99 paf 853:
1.85 paf 854: return 0;
1.70 paf 855: }