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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)
1.118 paf 5:
1.89 paf 6: Author: Alexander Petrosyan <paf@design.ru> (http://design.ru/paf)
1.1 paf 7: */
1.189 ! parser 8: static const char *RCSId="$Id: execute.C,v 1.188 2001/08/02 06:54:12 parser Exp $";
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"
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) {
1.181 parser 71: /* {
1.135 paf 72: int size=ops.quick_size();
1.158 parser 73: //debug_printf(pool, "size=%d\n", size);
1.23 paf 74: for(int i=0; i<size; i++) {
75: Operation op;
76: op.cast=ops.quick_get(i);
1.158 parser 77: debug_printf(pool, "%8X\n", op.cast);
1.23 paf 78: }
1.181 parser 79: }*/
1.23 paf 80:
1.135 paf 81: int size=ops.quick_size();
1.158 parser 82: //debug_printf(pool, "size=%d\n", size);
1.1 paf 83: for(int i=0; i<size; i++) {
1.23 paf 84: Operation op;
85: op.cast=ops.quick_get(i);
1.1 paf 86:
1.86 paf 87: if(op.code==OP_VALUE || op.code==OP_STRING__WRITE) {
1.52 paf 88: Value *value=static_cast<Value *>(ops.quick_get(++i));
1.158 parser 89: debug_printf(pool,
1.133 paf 90: "%*s%s"
91: " \"%s\" %s",
92: level*4, "", opcode_name[op.code],
93: value->get_string()->cstr(), value->type());
94: continue;
1.15 paf 95: }
1.158 parser 96: debug_printf(pool, "%*s%s", level*4, "", opcode_name[op.code]);
1.1 paf 97:
1.184 parser 98: switch(op.code) {
99: case OP_CURLY_CODE__STORE_PARAM:
100: case OP_EXPR_CODE__STORE_PARAM:
101: case OP_CURLY_CODE__CONSTRUCT:
1.10 paf 102: const Array *local_ops=reinterpret_cast<const Array *>(ops.quick_get(++i));
1.158 parser 103: debug_dump(pool, level+1, *local_ops);
1.1 paf 104: }
105: }
106: }
1.157 parser 107: #endif
1.1 paf 108:
1.159 parser 109: #define PUSH(value) stack.push(value)
110: #define POP() static_cast<Value *>(stack.pop())
111: #define POP_NAME() static_cast<Value *>(stack.pop())->as_string()
112:
1.32 paf 113: void Request::execute(const Array& ops) {
1.157 parser 114: #ifdef DEBUG_EXECUTE
1.158 parser 115: debug_printf(pool(), "source----------------------------\n");
116: debug_dump(pool(), 0, ops);
117: debug_printf(pool(), "execution-------------------------\n");
1.157 parser 118: #endif
1.12 paf 119:
1.189 ! parser 120: //int size=ops.quick_size();
1.158 parser 121: //debug_printf(pool(), "size=%d\n", size);
1.189 ! parser 122: for(int i=0; i<ops.size(); i++) {
1.23 paf 123: Operation op;
1.189 ! parser 124: //op.cast=ops.quick_get(i);
! 125: op.cast=ops.get(i);
1.157 parser 126: #ifdef DEBUG_EXECUTE
1.158 parser 127: debug_printf(pool(), "%d:%s", stack.top_index()+1, opcode_name[op.code]);
1.157 parser 128: #endif
1.11 paf 129:
1.23 paf 130: switch(op.code) {
1.51 paf 131: // param in next instruction
1.52 paf 132: case OP_VALUE:
1.32 paf 133: {
1.52 paf 134: Value *value=static_cast<Value *>(ops.quick_get(++i));
1.157 parser 135: #ifdef DEBUG_EXECUTE
1.158 parser 136: debug_printf(pool(), " \"%s\" %s", value->get_string()->cstr(), value->type());
1.157 parser 137: #endif
1.52 paf 138: PUSH(value);
1.32 paf 139: break;
140: }
1.109 paf 141: case OP_CURLY_CODE__STORE_PARAM:
142: case OP_EXPR_CODE__STORE_PARAM:
1.32 paf 143: {
1.73 paf 144: VMethodFrame *frame=static_cast<VMethodFrame *>(stack.top_value());
1.65 paf 145: // code
1.32 paf 146: const Array *local_ops=reinterpret_cast<const Array *>(ops.quick_get(++i));
1.157 parser 147: #ifdef DEBUG_EXECUTE
1.158 parser 148: debug_printf(pool(), " (%d)\n", local_ops->size());
149: debug_dump(pool(), 1, *local_ops);
1.157 parser 150: #endif
1.109 paf 151: // when they evaluate expression parameter,
152: // the object expression result
153: // does not need to be written into calling frame
154: // it must go into any expressions using that parameter
1.146 paf 155: // hence, we zero junction.wcontext here, and later
156: // in .process we would test that field
1.109 paf 157: // in decision "which wwrapper to use"
1.32 paf 158: Junction& j=*NEW Junction(pool(),
1.45 paf 159: *self, 0, 0,
1.130 paf 160: root,
1.149 paf 161: rcontext,
162: op.code==OP_EXPR_CODE__STORE_PARAM?0:wcontext,
1.130 paf 163: local_ops);
1.32 paf 164:
165: Value *value=NEW VJunction(j);
1.65 paf 166:
167: // store param
1.92 paf 168: frame->store_param(frame->name(), value);
1.32 paf 169: break;
170: }
1.66 paf 171: case OP_GET_CLASS:
1.38 paf 172: {
1.130 paf 173: // maybe they do ^class:method[] call, remember the fact
1.98 paf 174: wcontext->set_somebody_entered_some_class();
175:
1.82 paf 176: const String& name=POP_NAME();
1.120 paf 177: Value *value=static_cast<Value *>(classes().get(name));
178: if(!value)
1.66 paf 179: THROW(0,0,
180: &name,
1.143 paf 181: "class is undefined");
1.66 paf 182:
1.120 paf 183: PUSH(value);
1.38 paf 184: break;
185: }
1.32 paf 186:
1.51 paf 187: // OP_WITH
1.187 parser 188: case OP_WITH_ROOT:
189: {
190: PUSH(root);
191: break;
192: }
1.37 paf 193: case OP_WITH_SELF:
194: {
195: PUSH(self);
196: break;
197: }
1.15 paf 198: case OP_WITH_READ:
199: {
1.24 paf 200: PUSH(rcontext);
1.20 paf 201: break;
202: }
1.37 paf 203: case OP_WITH_WRITE:
1.20 paf 204: {
1.37 paf 205: PUSH(wcontext);
1.20 paf 206: break;
207: }
1.37 paf 208:
1.51 paf 209: // OTHER ACTIONS BUT WITHs
1.80 paf 210: case OP_CONSTRUCT_VALUE:
1.20 paf 211: {
1.37 paf 212: Value *value=POP();
1.82 paf 213: const String& name=POP_NAME();
1.37 paf 214: Value *ncontext=POP();
1.81 paf 215: ncontext->put_element(name, value);
1.37 paf 216: value->set_name(name);
1.15 paf 217: break;
218: }
1.80 paf 219: case OP_CONSTRUCT_EXPR:
220: {
221: Value *value=POP();
1.82 paf 222: const String& name=POP_NAME();
1.80 paf 223: Value *ncontext=POP();
1.128 paf 224: ncontext->put_element(name, value->as_expr_result());
1.80 paf 225: value->set_name(name);
226: break;
227: }
1.182 parser 228: case OP_CURLY_CODE__CONSTRUCT:
229: {
230: const Array *local_ops=reinterpret_cast<const Array *>(ops.quick_get(++i));
231: #ifdef DEBUG_EXECUTE
232: debug_printf(pool(), " (%d)\n", local_ops->size());
233: debug_dump(pool(), 1, *local_ops);
234: #endif
235: Junction& j=*NEW Junction(pool(),
236: *self, 0, 0,
237: root,
238: rcontext,
239: wcontext,
240: local_ops);
241:
242: Value *value=NEW VJunction(j);
243: const String& name=POP_NAME();
244: Value *ncontext=POP();
245: ncontext->put_element(name, value);
246: value->set_name(name);
247: break;
248: }
1.108 paf 249: case OP_WRITE_VALUE:
1.13 paf 250: {
1.24 paf 251: Value *value=POP();
1.92 paf 252: write_assign_lang(*value);
1.150 paf 253:
254: // forget the fact they've entered some ^object.method[].
255: // see OP_GET_ELEMENT
256: wcontext->clear_somebody_entered_some_object();
1.86 paf 257: break;
258: }
1.108 paf 259: case OP_WRITE_EXPR_RESULT:
260: {
261: Value *value=POP();
1.128 paf 262: write_expr_result(*value->as_expr_result());
1.108 paf 263: break;
264: }
1.86 paf 265: case OP_STRING__WRITE:
266: {
267: VString *vstring=static_cast<VString *>(ops.quick_get(++i));
1.157 parser 268: #ifdef DEBUG_EXECUTE
1.158 parser 269: debug_printf(pool(), " \"%s\"", vstring->string().cstr());
1.157 parser 270: #endif
1.122 paf 271: write_no_lang(vstring->string());
1.13 paf 272: break;
1.14 paf 273: }
1.13 paf 274:
1.15 paf 275: case OP_GET_ELEMENT:
1.11 paf 276: {
1.150 paf 277: // maybe they do ^object.method[] call, remember the fact
278: wcontext->inc_somebody_entered_some_object();
279:
1.174 parser 280: //_asm int 3;
1.17 paf 281: Value *value=get_element();
1.24 paf 282: PUSH(value);
1.17 paf 283: break;
284: }
285:
1.18 paf 286: case OP_GET_ELEMENT__WRITE:
1.17 paf 287: {
288: Value *value=get_element();
1.92 paf 289: write_assign_lang(*value);
1.17 paf 290: break;
291: }
292:
1.32 paf 293:
1.17 paf 294: case OP_CREATE_EWPOOL:
295: {
1.24 paf 296: PUSH(wcontext);
1.137 paf 297: PUSH((void *)flang);
298: flang=String::UL_PASS_APPENDED;
1.186 parser 299: wcontext=NEW WWrapper(pool(), 0 /*empty*/);
1.17 paf 300: break;
301: }
302: case OP_REDUCE_EWPOOL:
303: {
1.36 paf 304: Value *value=wcontext->result();
1.137 paf 305: flang=static_cast<String::Untaint_lang>(reinterpret_cast<int>(POP()));
1.25 paf 306: wcontext=static_cast<WContext *>(POP());
1.24 paf 307: PUSH(value);
1.13 paf 308: break;
1.15 paf 309: }
1.13 paf 310:
1.49 paf 311: case OP_CREATE_SWPOOL:
312: {
313: PUSH(wcontext);
1.186 parser 314: wcontext=NEW WWrapper(pool(), 0 /*empty*/);
1.49 paf 315: break;
316: }
317: case OP_REDUCE_SWPOOL:
318: {
319: // from "$a $b" part of expression taking only string value,
320: // ignoring any other content of wcontext
1.82 paf 321: const String *string=wcontext->get_string();
1.80 paf 322: Value *value;
323: if(string)
324: value=NEW VString(*string);
325: else
1.167 parser 326: NEW VVoid(pool());
1.50 paf 327: wcontext=static_cast<WContext *>(POP());
1.49 paf 328: PUSH(value);
329: break;
330: }
331:
1.51 paf 332: // CALL
1.28 paf 333: case OP_GET_METHOD_FRAME:
334: {
1.32 paf 335: Value *value=POP();
1.138 paf 336:
1.111 paf 337: // info:
338: // code compiled so that this one's always method-junction,
339: // not a code-junction
1.32 paf 340: Junction *junction=value->get_junction();
1.31 paf 341: if(!junction)
1.185 parser 342: THROW(0, 0,
1.42 paf 343: &value->name(),
1.111 paf 344: "(%s) not a method or junction, can not call it",
1.38 paf 345: value->type());
1.70 paf 346:
1.185 parser 347: VMethodFrame *frame=NEW VMethodFrame(pool(), value->name(), *junction);
1.28 paf 348: PUSH(frame);
349: break;
350: }
351: case OP_STORE_PARAM:
352: {
353: Value *value=POP();
1.73 paf 354: VMethodFrame *frame=static_cast<VMethodFrame *>(stack.top_value());
1.92 paf 355: frame->store_param(frame->name(), value);
1.29 paf 356: break;
357: }
358:
1.186 parser 359: case OP_PREPARE_TO_CONSTRUCT_OBJECT:
360: {
361: wcontext->constructing(true);
362: break;
363: }
364: case OP_CALL:
1.29 paf 365: {
1.157 parser 366: #ifdef DEBUG_EXECUTE
1.158 parser 367: debug_printf(pool(), "->\n");
1.157 parser 368: #endif
1.34 paf 369: VMethodFrame *frame=static_cast<VMethodFrame *>(POP());
370: frame->fill_unspecified_params();
1.45 paf 371: PUSH(self);
372: PUSH(root);
373: PUSH(rcontext);
374: PUSH(wcontext);
375:
1.100 paf 376: VStateless_class *called_class=frame->junction.self.get_class();
1.186 parser 377: if(wcontext->constructing()) {
378: wcontext->constructing(false);
1.185 parser 379: if(frame->junction.method->call_type!=Method::CT_STATIC) {
1.138 paf 380: // this is a constructor call
1.185 parser 381:
382: if(Value *value=called_class->create_new_value(pool())) {
383: // some stateless_object creatable derivates
1.149 paf 384: self=value;
1.185 parser 385: } else {
386: // stateful object
1.94 paf 387: self=NEW VObject(pool(), *called_class);
1.185 parser 388: }
1.83 paf 389: frame->write(*self,
1.136 paf 390: String::UL_CLEAN // not used, always an object, not string
1.83 paf 391: );
1.185 parser 392: } else
393: THROW(0, 0,
394: &frame->name(),
395: "method is static and can not be used as constructor");
396: } else {
397: // this is not constructor call
398:
399: // not ^name.method call, name:method call; and
400: // is context object or class & is it my class or my parent's class and?
401: VStateless_class *read_class=rcontext->get_class();
402: if(
403: !(wcontext->somebody_entered_some_object() &&
404: !wcontext->somebody_entered_some_class()) &&
405: read_class && read_class->is_or_derived_from(*called_class)) // yes
406: self=rcontext; // dynamic call
407: else // no, not me or relative of mine (=total stranger)
408: self=&frame->junction.self; // static call
409: }
1.75 paf 410:
1.45 paf 411: frame->set_self(*self);
1.29 paf 412: root=rcontext=wcontext=frame;
1.47 paf 413: {
1.48 paf 414: // take object or class from any wrappers
1.102 paf 415: // and substitute class alias to the class they are called AS
416: Temp_alias temp_alias(*self->get_aliased(), *frame->junction.vclass);
1.68 paf 417:
1.99 paf 418: const Method& method=*frame->junction.method;
1.134 paf 419: Method::Call_type call_type=
420: called_class==self ? Method::CT_STATIC : Method::CT_DYNAMIC;
421: if(
422: method.call_type==Method::CT_ANY ||
423: method.call_type==call_type) // allowed call type?
424: if(method.native_code) { // native code?
1.154 paf 425: method.check_actual_numbered_params(pool(),
1.134 paf 426: frame->junction.self,
427: frame->name(), frame->numbered_params());
1.160 parser 428: method.native_code(
1.134 paf 429: *this,
430: frame->name(), frame->numbered_params()); // execute it
1.159 parser 431: } else { // parser code
432: if(++anti_endless_execute_recoursion==ANTI_ENDLESS_EXECUTE_RECOURSION) {
433: anti_endless_execute_recoursion=0; // give @exception a chance
434: THROW(0, 0,
1.160 parser 435: &frame->name(),
1.159 parser 436: "endless recursion detected");
437: }
438:
1.134 paf 439: execute(*method.parser_code); // execute it
1.159 parser 440: anti_endless_execute_recoursion--;
441: }
1.134 paf 442: else
443: THROW(0, 0,
444: &frame->name(),
445: "is not allowed to be called %s",
446: call_type==Method::CT_STATIC?"statically":"dynamically");
447:
1.47 paf 448: }
1.36 paf 449: Value *value=wcontext->result();
1.45 paf 450:
451: wcontext=static_cast<WContext *>(POP());
452: rcontext=POP();
453: root=POP();
454: self=static_cast<VAliased *>(POP());
1.62 paf 455:
1.61 paf 456: PUSH(value);
1.157 parser 457: #ifdef DEBUG_EXECUTE
1.158 parser 458: debug_printf(pool(), "<-returned");
1.157 parser 459: #endif
1.49 paf 460: break;
461: }
462:
1.55 paf 463: // expression ops: unary
464: case OP_NEG:
465: {
466: Value *operand=POP();
1.128 paf 467: Value *value=NEW VDouble(pool(), -operand->as_double());
1.55 paf 468: PUSH(value);
469: break;
470: }
471: case OP_INV:
472: {
473: Value *operand=POP();
1.155 parser 474: Value *value=NEW VDouble(pool(), ~operand->as_int());
1.55 paf 475: PUSH(value);
476: break;
477: }
478: case OP_NOT:
479: {
480: Value *operand=POP();
1.128 paf 481: Value *value=NEW VBool(pool(), !operand->as_bool());
1.55 paf 482: PUSH(value);
483: break;
484: }
1.62 paf 485: case OP_DEF:
486: {
487: Value *operand=POP();
1.128 paf 488: Value *value=NEW VBool(pool(), operand->is_defined());
1.62 paf 489: PUSH(value);
490: break;
491: }
492: case OP_IN:
493: {
494: Value *operand=POP();
1.110 paf 495: const char *path=operand->as_string().cstr();
1.151 paf 496: Value *value=NEW VBool(pool(),
497: info.uri && strncmp(path, info.uri, strlen(path))==0);
1.62 paf 498: PUSH(value);
499: break;
500: }
501: case OP_FEXISTS:
502: {
503: Value *operand=POP();
1.127 paf 504: Value *value=NEW VBool(pool(),
505: file_readable(absolute(operand->as_string())));
1.148 paf 506: PUSH(value);
507: break;
508: }
509: case OP_DEXISTS:
510: {
511: Value *operand=POP();
512: Value *value=NEW VBool(pool(),
513: dir_readable(absolute(operand->as_string())));
1.62 paf 514: PUSH(value);
515: break;
516: }
1.55 paf 517:
518: // expression ops: binary
519: case OP_SUB:
1.53 paf 520: {
1.61 paf 521: Value *b=POP(); Value *a=POP();
1.128 paf 522: Value *value=NEW VDouble(pool(), a->as_double() - b->as_double());
1.53 paf 523: PUSH(value);
524: break;
525: }
1.55 paf 526: case OP_ADD:
1.53 paf 527: {
1.61 paf 528: Value *b=POP(); Value *a=POP();
1.128 paf 529: Value *value=NEW VDouble(pool(), a->as_double() + b->as_double());
1.53 paf 530: PUSH(value);
531: break;
532: }
1.49 paf 533: case OP_MUL:
534: {
1.61 paf 535: Value *b=POP(); Value *a=POP();
1.128 paf 536: Value *value=NEW VDouble(pool(), a->as_double() * b->as_double());
1.53 paf 537: PUSH(value);
538: break;
539: }
540: case OP_DIV:
541: {
1.61 paf 542: Value *b=POP(); Value *a=POP();
1.170 parser 543:
544: double a_double=a->as_double();
545: double b_double=b->as_double();
546:
1.171 parser 547: if(b_double == 0) {
548: const String *problem_source=&b->as_string();
549: #ifndef NO_STRING_ORIGIN
550: if(!problem_source->origin().file)
1.172 parser 551: problem_source=&b->name();
1.171 parser 552: #endif
1.170 parser 553: THROW(0, 0,
1.171 parser 554: problem_source,
1.170 parser 555: "Division by zero");
1.171 parser 556: }
1.170 parser 557:
1.171 parser 558: Value *value=NEW VDouble(pool(), a_double / b_double);
1.54 paf 559: PUSH(value);
560: break;
561: }
1.55 paf 562: case OP_MOD:
563: {
1.61 paf 564: Value *b=POP(); Value *a=POP();
1.170 parser 565:
1.173 parser 566: double a_double=a->as_double();
567: double b_double=b->as_double();
1.170 parser 568:
1.173 parser 569: if(b_double == 0) {
1.171 parser 570: const String *problem_source=&b->as_string();
571: #ifndef NO_STRING_ORIGIN
572: if(!problem_source->origin().file)
1.172 parser 573: problem_source=&b->name();
1.171 parser 574: #endif
1.170 parser 575: THROW(0, 0,
1.171 parser 576: problem_source,
1.170 parser 577: "Modulus by zero");
1.171 parser 578: }
1.170 parser 579:
1.173 parser 580: Value *value=NEW VDouble(pool(), fmod(a_double, b_double));
1.55 paf 581: PUSH(value);
582: break;
583: }
584: case OP_BIN_AND:
1.54 paf 585: {
1.61 paf 586: Value *b=POP(); Value *a=POP();
1.78 paf 587: Value *value=NEW VDouble(pool(),
1.155 parser 588: a->as_int() &
589: b->as_int());
1.54 paf 590: PUSH(value);
591: break;
592: }
1.55 paf 593: case OP_BIN_OR:
1.54 paf 594: {
1.61 paf 595: Value *b=POP(); Value *a=POP();
1.78 paf 596: Value *value=NEW VDouble(pool(),
1.155 parser 597: a->as_int() |
598: b->as_int());
1.55 paf 599: PUSH(value);
600: break;
601: }
1.56 paf 602: case OP_BIN_XOR:
603: {
1.61 paf 604: Value *b=POP(); Value *a=POP();
1.78 paf 605: Value *value=NEW VDouble(pool(),
1.155 parser 606: a->as_int() ^
607: b->as_int());
1.56 paf 608: PUSH(value);
609: break;
610: }
1.55 paf 611: case OP_LOG_AND:
612: {
1.61 paf 613: Value *b=POP(); Value *a=POP();
1.128 paf 614: Value *value=NEW VBool(pool(), a->as_bool() && b->as_bool());
1.55 paf 615: PUSH(value);
616: break;
617: }
618: case OP_LOG_OR:
619: {
1.61 paf 620: Value *b=POP(); Value *a=POP();
1.128 paf 621: Value *value=NEW VBool(pool(), a->as_bool() || b->as_bool());
1.56 paf 622: PUSH(value);
623: break;
624: }
625: case OP_LOG_XOR:
626: {
1.61 paf 627: Value *b=POP(); Value *a=POP();
1.128 paf 628: Value *value=NEW VBool(pool(), a->as_bool() ^ b->as_bool());
1.55 paf 629: PUSH(value);
630: break;
631: }
632: case OP_NUM_LT:
633: {
1.61 paf 634: Value *b=POP(); Value *a=POP();
1.128 paf 635: Value *value=NEW VBool(pool(), a->as_double() < b->as_double());
1.55 paf 636: PUSH(value);
637: break;
638: }
639: case OP_NUM_GT:
640: {
1.61 paf 641: Value *b=POP(); Value *a=POP();
1.128 paf 642: Value *value=NEW VBool(pool(), a->as_double() > b->as_double());
1.55 paf 643: PUSH(value);
644: break;
645: }
646: case OP_NUM_LE:
647: {
1.61 paf 648: Value *b=POP(); Value *a=POP();
1.128 paf 649: Value *value=NEW VBool(pool(), a->as_double() <= b->as_double());
1.55 paf 650: PUSH(value);
651: break;
652: }
653: case OP_NUM_GE:
654: {
1.61 paf 655: Value *b=POP(); Value *a=POP();
1.128 paf 656: Value *value=NEW VBool(pool(), a->as_double() >= b->as_double());
1.55 paf 657: PUSH(value);
658: break;
659: }
660: case OP_NUM_EQ:
661: {
1.61 paf 662: Value *b=POP(); Value *a=POP();
1.128 paf 663: Value *value=NEW VBool(pool(), a->as_double() == b->as_double());
1.55 paf 664: PUSH(value);
665: break;
666: }
667: case OP_NUM_NE:
668: {
1.61 paf 669: Value *b=POP(); Value *a=POP();
1.128 paf 670: Value *value=NEW VBool(pool(), a->as_double() != b->as_double());
1.54 paf 671: PUSH(value);
672: break;
673: }
1.58 paf 674: case OP_STR_LT:
675: {
1.61 paf 676: Value *b=POP(); Value *a=POP();
1.78 paf 677: Value *value=NEW VBool(pool(), a->as_string() < b->as_string());
1.58 paf 678: PUSH(value);
679: break;
680: }
681: case OP_STR_GT:
682: {
1.61 paf 683: Value *b=POP(); Value *a=POP();
1.78 paf 684: Value *value=NEW VBool(pool(), a->as_string() > b->as_string());
1.58 paf 685: PUSH(value);
686: break;
687: }
1.55 paf 688: case OP_STR_LE:
1.58 paf 689: {
1.61 paf 690: Value *b=POP(); Value *a=POP();
1.78 paf 691: Value *value=NEW VBool(pool(), a->as_string() <= b->as_string());
1.58 paf 692: PUSH(value);
693: break;
694: }
1.55 paf 695: case OP_STR_GE:
1.54 paf 696: {
1.61 paf 697: Value *b=POP(); Value *a=POP();
1.78 paf 698: Value *value=NEW VBool(pool(), a->as_string() >= b->as_string());
1.58 paf 699: PUSH(value);
700: break;
701: }
702: case OP_STR_EQ:
703: {
1.61 paf 704: Value *b=POP(); Value *a=POP();
1.78 paf 705: Value *value=NEW VBool(pool(), a->as_string() == b->as_string());
1.58 paf 706: PUSH(value);
707: break;
708: }
709: case OP_STR_NE:
710: {
1.61 paf 711: Value *b=POP(); Value *a=POP();
1.78 paf 712: Value *value=NEW VBool(pool(), a->as_string() != b->as_string());
1.103 paf 713: PUSH(value);
714: break;
715: }
716: case OP_IS:
717: {
718: Value *b=POP(); Value *a=POP();
719: Value *value=NEW VBool(pool(), b->as_string() == a->type());
1.49 paf 720: PUSH(value);
1.28 paf 721: break;
722: }
723:
1.11 paf 724: default:
1.67 paf 725: THROW(0,0,
726: 0,
1.139 paf 727: "invalid opcode %d", op.code);
1.11 paf 728: }
729: }
1.1 paf 730: }
1.17 paf 731:
732: Value *Request::get_element() {
1.82 paf 733: const String& name=POP_NAME();
1.24 paf 734: Value *ncontext=POP();
1.181 parser 735: Value *value=ncontext->get_element(name);
736: if(!value)
737: if(Method* method=OP.get_method(name)) { // maybe operator?
738: // as if that method were in self and we have normal dynamic method here
739: Junction& junction=*NEW Junction(pool(),
740: *self, self->get_class(), method, 0,0,0,0);
741: value=NEW VJunction(junction);
742: }
1.76 paf 743: if(value)
1.92 paf 744: value=&process(*value, &name); // process possible code-junction
1.76 paf 745: else {
1.167 parser 746: value=NEW VVoid(pool());
1.76 paf 747: value->set_name(name);
748: }
1.63 paf 749:
1.17 paf 750: return value;
1.34 paf 751: }
1.70 paf 752:
1.162 parser 753: /** @param intercept_string
1.116 paf 754: - true:
755: they want result=string value,
756: possible object result goes to wcontext
757: - false:
758: they want any result[string|object]
759: nothing goes to wcontext.
1.125 paf 760: used in @c (expression) params evaluation
1.116 paf 761: */
1.92 paf 762: Value& Request::process(Value& value, const String *name, bool intercept_string) {
1.91 paf 763: Value *result;
1.70 paf 764: Junction *junction=value.get_junction();
765: if(junction && junction->code) { // is it a code-junction?
1.92 paf 766: // process it
1.157 parser 767: #ifdef DEBUG_EXECUTE
1.158 parser 768: debug_printf(pool(), "ja->\n");
1.157 parser 769: #endif
1.70 paf 770: PUSH(self);
771: PUSH(root);
772: PUSH(rcontext);
1.129 paf 773: PUSH(wcontext);
1.70 paf 774:
1.71 paf 775: WContext *frame;
1.109 paf 776: // for expression method params
777: // wcontext is set 0
778: // using the fact in decision "which wwrapper to use"
779: bool using_code_frame=intercept_string && junction->wcontext;
780: if(using_code_frame) {
1.71 paf 781: // almost plain wwrapper about junction wcontext,
782: // BUT intercepts string writes
783: frame=NEW VCodeFrame(pool(), *junction->wcontext);
784: } else {
785: // plain wwrapper
1.186 parser 786: frame=NEW WWrapper(pool(), 0/*empty*/);
1.71 paf 787: }
788:
1.183 parser 789: //frame->set_name(value.name());
1.71 paf 790: wcontext=frame;
1.70 paf 791: self=&junction->self;
792: root=junction->root;
793: rcontext=junction->rcontext;
794: execute(*junction->code);
1.109 paf 795: if(using_code_frame) {
1.71 paf 796: // CodeFrame soul:
797: // string writes were intercepted
798: // returning them as the result of getting code-junction
799: result=NEW VString(*frame->get_string());
800: } else
801: result=frame->result();
1.70 paf 802:
803: wcontext=static_cast<WContext *>(POP());
804: rcontext=POP();
805: root=POP();
806: self=static_cast<VAliased *>(POP());
807:
1.157 parser 808: #ifdef DEBUG_EXECUTE
1.158 parser 809: debug_printf(pool(), "<-ja returned");
1.157 parser 810: #endif
1.70 paf 811: } else
1.91 paf 812: result=&value;
813:
814: if(name)
815: result->set_name(*name);
816: return *result;
1.85 paf 817: }
818:
1.176 parser 819: const String *Request::execute_method(Value& aself, const Method& method,
820: bool return_cstr) {
1.99 paf 821: PUSH(self);
822: PUSH(root);
823: PUSH(rcontext);
824: PUSH(wcontext);
825:
826: // initialize contexts
827: root=rcontext=self=&aself;
1.186 parser 828: wcontext=NEW WWrapper(pool(), &aself);
1.99 paf 829:
830: // execute!
831: execute(*method.parser_code);
832:
833: // result
1.114 paf 834: const String *result;
1.99 paf 835: if(return_cstr)
1.114 paf 836: result=&wcontext->as_string();
1.99 paf 837: else
838: result=0; // ignore result
839:
840: wcontext=static_cast<WContext *>(POP());
841: rcontext=POP();
842: root=POP();
843: self=static_cast<VAliased *>(POP());
844:
845: // return
846: return result;
847: }
848:
1.176 parser 849: const String *Request::execute_virtual_method(Value& aself,
850: const String& method_name,
851: bool return_cstr) {
1.99 paf 852: if(Value *value=aself.get_element(method_name))
853: if(Junction *junction=value->get_junction())
854: if(const Method *method=junction->method)
855: return execute_method(aself, *method, return_cstr);
1.188 parser 856:
1.176 parser 857: return 0;
858: }
859:
1.178 parser 860: const String *Request::execute_nonvirtual_method(VStateless_class& aclass,
1.176 parser 861: const String& method_name,
862: bool return_cstr) {
1.178 parser 863: if(const Method *method=aclass.get_method(method_name))
1.179 parser 864: return execute_method(aclass, *method, return_cstr);
1.99 paf 865:
1.85 paf 866: return 0;
1.70 paf 867: }