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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: */
1.188 ! parser 8: static const char *RCSId="$Id: execute.C,v 1.187 2001/07/26 14:15:45 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:
1.135 paf 120: int size=ops.quick_size();
1.158 parser 121: //debug_printf(pool(), "size=%d\n", size);
1.11 paf 122: for(int i=0; i<size; i++) {
1.23 paf 123: Operation op;
124: op.cast=ops.quick_get(i);
1.157 parser 125: #ifdef DEBUG_EXECUTE
1.158 parser 126: debug_printf(pool(), "%d:%s", stack.top_index()+1, opcode_name[op.code]);
1.157 parser 127: #endif
1.11 paf 128:
1.23 paf 129: switch(op.code) {
1.51 paf 130: // param in next instruction
1.52 paf 131: case OP_VALUE:
1.32 paf 132: {
1.52 paf 133: Value *value=static_cast<Value *>(ops.quick_get(++i));
1.157 parser 134: #ifdef DEBUG_EXECUTE
1.158 parser 135: debug_printf(pool(), " \"%s\" %s", value->get_string()->cstr(), value->type());
1.157 parser 136: #endif
1.52 paf 137: PUSH(value);
1.32 paf 138: break;
139: }
1.109 paf 140: case OP_CURLY_CODE__STORE_PARAM:
141: case OP_EXPR_CODE__STORE_PARAM:
1.32 paf 142: {
1.73 paf 143: VMethodFrame *frame=static_cast<VMethodFrame *>(stack.top_value());
1.65 paf 144: // code
1.32 paf 145: const Array *local_ops=reinterpret_cast<const Array *>(ops.quick_get(++i));
1.157 parser 146: #ifdef DEBUG_EXECUTE
1.158 parser 147: debug_printf(pool(), " (%d)\n", local_ops->size());
148: debug_dump(pool(), 1, *local_ops);
1.157 parser 149: #endif
1.109 paf 150: // when they evaluate expression parameter,
151: // the object expression result
152: // does not need to be written into calling frame
153: // it must go into any expressions using that parameter
1.146 paf 154: // hence, we zero junction.wcontext here, and later
155: // in .process we would test that field
1.109 paf 156: // in decision "which wwrapper to use"
1.32 paf 157: Junction& j=*NEW Junction(pool(),
1.45 paf 158: *self, 0, 0,
1.130 paf 159: root,
1.149 paf 160: rcontext,
161: op.code==OP_EXPR_CODE__STORE_PARAM?0:wcontext,
1.130 paf 162: local_ops);
1.32 paf 163:
164: Value *value=NEW VJunction(j);
1.65 paf 165:
166: // store param
1.92 paf 167: frame->store_param(frame->name(), value);
1.32 paf 168: break;
169: }
1.66 paf 170: case OP_GET_CLASS:
1.38 paf 171: {
1.130 paf 172: // maybe they do ^class:method[] call, remember the fact
1.98 paf 173: wcontext->set_somebody_entered_some_class();
174:
1.82 paf 175: const String& name=POP_NAME();
1.120 paf 176: Value *value=static_cast<Value *>(classes().get(name));
177: if(!value)
1.66 paf 178: THROW(0,0,
179: &name,
1.143 paf 180: "class is undefined");
1.66 paf 181:
1.120 paf 182: PUSH(value);
1.38 paf 183: break;
184: }
1.32 paf 185:
1.51 paf 186: // OP_WITH
1.187 parser 187: case OP_WITH_ROOT:
188: {
189: PUSH(root);
190: break;
191: }
1.37 paf 192: case OP_WITH_SELF:
193: {
194: PUSH(self);
195: break;
196: }
1.15 paf 197: case OP_WITH_READ:
198: {
1.24 paf 199: PUSH(rcontext);
1.20 paf 200: break;
201: }
1.37 paf 202: case OP_WITH_WRITE:
1.20 paf 203: {
1.37 paf 204: PUSH(wcontext);
1.20 paf 205: break;
206: }
1.37 paf 207:
1.51 paf 208: // OTHER ACTIONS BUT WITHs
1.80 paf 209: case OP_CONSTRUCT_VALUE:
1.20 paf 210: {
1.37 paf 211: Value *value=POP();
1.82 paf 212: const String& name=POP_NAME();
1.37 paf 213: Value *ncontext=POP();
1.81 paf 214: ncontext->put_element(name, value);
1.37 paf 215: value->set_name(name);
1.15 paf 216: break;
217: }
1.80 paf 218: case OP_CONSTRUCT_EXPR:
219: {
220: Value *value=POP();
1.82 paf 221: const String& name=POP_NAME();
1.80 paf 222: Value *ncontext=POP();
1.128 paf 223: ncontext->put_element(name, value->as_expr_result());
1.80 paf 224: value->set_name(name);
225: break;
226: }
1.182 parser 227: case OP_CURLY_CODE__CONSTRUCT:
228: {
229: const Array *local_ops=reinterpret_cast<const Array *>(ops.quick_get(++i));
230: #ifdef DEBUG_EXECUTE
231: debug_printf(pool(), " (%d)\n", local_ops->size());
232: debug_dump(pool(), 1, *local_ops);
233: #endif
234: Junction& j=*NEW Junction(pool(),
235: *self, 0, 0,
236: root,
237: rcontext,
238: wcontext,
239: local_ops);
240:
241: Value *value=NEW VJunction(j);
242: const String& name=POP_NAME();
243: Value *ncontext=POP();
244: ncontext->put_element(name, value);
245: value->set_name(name);
246: break;
247: }
1.108 paf 248: case OP_WRITE_VALUE:
1.13 paf 249: {
1.24 paf 250: Value *value=POP();
1.92 paf 251: write_assign_lang(*value);
1.150 paf 252:
253: // forget the fact they've entered some ^object.method[].
254: // see OP_GET_ELEMENT
255: wcontext->clear_somebody_entered_some_object();
1.86 paf 256: break;
257: }
1.108 paf 258: case OP_WRITE_EXPR_RESULT:
259: {
260: Value *value=POP();
1.128 paf 261: write_expr_result(*value->as_expr_result());
1.108 paf 262: break;
263: }
1.86 paf 264: case OP_STRING__WRITE:
265: {
266: VString *vstring=static_cast<VString *>(ops.quick_get(++i));
1.157 parser 267: #ifdef DEBUG_EXECUTE
1.158 parser 268: debug_printf(pool(), " \"%s\"", vstring->string().cstr());
1.157 parser 269: #endif
1.122 paf 270: write_no_lang(vstring->string());
1.13 paf 271: break;
1.14 paf 272: }
1.13 paf 273:
1.15 paf 274: case OP_GET_ELEMENT:
1.11 paf 275: {
1.150 paf 276: // maybe they do ^object.method[] call, remember the fact
277: wcontext->inc_somebody_entered_some_object();
278:
1.174 parser 279: //_asm int 3;
1.17 paf 280: Value *value=get_element();
1.24 paf 281: PUSH(value);
1.17 paf 282: break;
283: }
284:
1.18 paf 285: case OP_GET_ELEMENT__WRITE:
1.17 paf 286: {
287: Value *value=get_element();
1.92 paf 288: write_assign_lang(*value);
1.17 paf 289: break;
290: }
291:
1.32 paf 292:
1.17 paf 293: case OP_CREATE_EWPOOL:
294: {
1.24 paf 295: PUSH(wcontext);
1.137 paf 296: PUSH((void *)flang);
297: flang=String::UL_PASS_APPENDED;
1.186 parser 298: wcontext=NEW WWrapper(pool(), 0 /*empty*/);
1.17 paf 299: break;
300: }
301: case OP_REDUCE_EWPOOL:
302: {
1.36 paf 303: Value *value=wcontext->result();
1.137 paf 304: flang=static_cast<String::Untaint_lang>(reinterpret_cast<int>(POP()));
1.25 paf 305: wcontext=static_cast<WContext *>(POP());
1.24 paf 306: PUSH(value);
1.13 paf 307: break;
1.15 paf 308: }
1.13 paf 309:
1.49 paf 310: case OP_CREATE_SWPOOL:
311: {
312: PUSH(wcontext);
1.186 parser 313: wcontext=NEW WWrapper(pool(), 0 /*empty*/);
1.49 paf 314: break;
315: }
316: case OP_REDUCE_SWPOOL:
317: {
318: // from "$a $b" part of expression taking only string value,
319: // ignoring any other content of wcontext
1.82 paf 320: const String *string=wcontext->get_string();
1.80 paf 321: Value *value;
322: if(string)
323: value=NEW VString(*string);
324: else
1.167 parser 325: NEW VVoid(pool());
1.50 paf 326: wcontext=static_cast<WContext *>(POP());
1.49 paf 327: PUSH(value);
328: break;
329: }
330:
1.51 paf 331: // CALL
1.28 paf 332: case OP_GET_METHOD_FRAME:
333: {
1.32 paf 334: Value *value=POP();
1.138 paf 335:
1.111 paf 336: // info:
337: // code compiled so that this one's always method-junction,
338: // not a code-junction
1.32 paf 339: Junction *junction=value->get_junction();
1.31 paf 340: if(!junction)
1.185 parser 341: THROW(0, 0,
1.42 paf 342: &value->name(),
1.111 paf 343: "(%s) not a method or junction, can not call it",
1.38 paf 344: value->type());
1.70 paf 345:
1.185 parser 346: VMethodFrame *frame=NEW VMethodFrame(pool(), value->name(), *junction);
1.28 paf 347: PUSH(frame);
348: break;
349: }
350: case OP_STORE_PARAM:
351: {
352: Value *value=POP();
1.73 paf 353: VMethodFrame *frame=static_cast<VMethodFrame *>(stack.top_value());
1.92 paf 354: frame->store_param(frame->name(), value);
1.29 paf 355: break;
356: }
357:
1.186 parser 358: case OP_PREPARE_TO_CONSTRUCT_OBJECT:
359: {
360: wcontext->constructing(true);
361: break;
362: }
363: case OP_CALL:
1.29 paf 364: {
1.157 parser 365: #ifdef DEBUG_EXECUTE
1.158 parser 366: debug_printf(pool(), "->\n");
1.157 parser 367: #endif
1.34 paf 368: VMethodFrame *frame=static_cast<VMethodFrame *>(POP());
369: frame->fill_unspecified_params();
1.45 paf 370: PUSH(self);
371: PUSH(root);
372: PUSH(rcontext);
373: PUSH(wcontext);
374:
1.100 paf 375: VStateless_class *called_class=frame->junction.self.get_class();
1.186 parser 376: if(wcontext->constructing()) {
377: wcontext->constructing(false);
1.185 parser 378: if(frame->junction.method->call_type!=Method::CT_STATIC) {
1.138 paf 379: // this is a constructor call
1.185 parser 380:
381: if(Value *value=called_class->create_new_value(pool())) {
382: // some stateless_object creatable derivates
1.149 paf 383: self=value;
1.185 parser 384: } else {
385: // stateful object
1.94 paf 386: self=NEW VObject(pool(), *called_class);
1.185 parser 387: }
1.83 paf 388: frame->write(*self,
1.136 paf 389: String::UL_CLEAN // not used, always an object, not string
1.83 paf 390: );
1.185 parser 391: } else
392: THROW(0, 0,
393: &frame->name(),
394: "method is static and can not be used as constructor");
395: } else {
396: // this is not constructor call
397:
398: // not ^name.method call, name:method call; and
399: // is context object or class & is it my class or my parent's class and?
400: VStateless_class *read_class=rcontext->get_class();
401: if(
402: !(wcontext->somebody_entered_some_object() &&
403: !wcontext->somebody_entered_some_class()) &&
404: read_class && read_class->is_or_derived_from(*called_class)) // yes
405: self=rcontext; // dynamic call
406: else // no, not me or relative of mine (=total stranger)
407: self=&frame->junction.self; // static call
408: }
1.75 paf 409:
1.45 paf 410: frame->set_self(*self);
1.29 paf 411: root=rcontext=wcontext=frame;
1.47 paf 412: {
1.48 paf 413: // take object or class from any wrappers
1.102 paf 414: // and substitute class alias to the class they are called AS
415: Temp_alias temp_alias(*self->get_aliased(), *frame->junction.vclass);
1.68 paf 416:
1.99 paf 417: const Method& method=*frame->junction.method;
1.134 paf 418: Method::Call_type call_type=
419: called_class==self ? Method::CT_STATIC : Method::CT_DYNAMIC;
420: if(
421: method.call_type==Method::CT_ANY ||
422: method.call_type==call_type) // allowed call type?
423: if(method.native_code) { // native code?
1.154 paf 424: method.check_actual_numbered_params(pool(),
1.134 paf 425: frame->junction.self,
426: frame->name(), frame->numbered_params());
1.160 parser 427: method.native_code(
1.134 paf 428: *this,
429: frame->name(), frame->numbered_params()); // execute it
1.159 parser 430: } else { // parser code
431: if(++anti_endless_execute_recoursion==ANTI_ENDLESS_EXECUTE_RECOURSION) {
432: anti_endless_execute_recoursion=0; // give @exception a chance
433: THROW(0, 0,
1.160 parser 434: &frame->name(),
1.159 parser 435: "endless recursion detected");
436: }
437:
1.134 paf 438: execute(*method.parser_code); // execute it
1.159 parser 439: anti_endless_execute_recoursion--;
440: }
1.134 paf 441: else
442: THROW(0, 0,
443: &frame->name(),
444: "is not allowed to be called %s",
445: call_type==Method::CT_STATIC?"statically":"dynamically");
446:
1.47 paf 447: }
1.36 paf 448: Value *value=wcontext->result();
1.45 paf 449:
450: wcontext=static_cast<WContext *>(POP());
451: rcontext=POP();
452: root=POP();
453: self=static_cast<VAliased *>(POP());
1.62 paf 454:
1.61 paf 455: PUSH(value);
1.157 parser 456: #ifdef DEBUG_EXECUTE
1.158 parser 457: debug_printf(pool(), "<-returned");
1.157 parser 458: #endif
1.49 paf 459: break;
460: }
461:
1.55 paf 462: // expression ops: unary
463: case OP_NEG:
464: {
465: Value *operand=POP();
1.128 paf 466: Value *value=NEW VDouble(pool(), -operand->as_double());
1.55 paf 467: PUSH(value);
468: break;
469: }
470: case OP_INV:
471: {
472: Value *operand=POP();
1.155 parser 473: Value *value=NEW VDouble(pool(), ~operand->as_int());
1.55 paf 474: PUSH(value);
475: break;
476: }
477: case OP_NOT:
478: {
479: Value *operand=POP();
1.128 paf 480: Value *value=NEW VBool(pool(), !operand->as_bool());
1.55 paf 481: PUSH(value);
482: break;
483: }
1.62 paf 484: case OP_DEF:
485: {
486: Value *operand=POP();
1.128 paf 487: Value *value=NEW VBool(pool(), operand->is_defined());
1.62 paf 488: PUSH(value);
489: break;
490: }
491: case OP_IN:
492: {
493: Value *operand=POP();
1.110 paf 494: const char *path=operand->as_string().cstr();
1.151 paf 495: Value *value=NEW VBool(pool(),
496: info.uri && strncmp(path, info.uri, strlen(path))==0);
1.62 paf 497: PUSH(value);
498: break;
499: }
500: case OP_FEXISTS:
501: {
502: Value *operand=POP();
1.127 paf 503: Value *value=NEW VBool(pool(),
504: file_readable(absolute(operand->as_string())));
1.148 paf 505: PUSH(value);
506: break;
507: }
508: case OP_DEXISTS:
509: {
510: Value *operand=POP();
511: Value *value=NEW VBool(pool(),
512: dir_readable(absolute(operand->as_string())));
1.62 paf 513: PUSH(value);
514: break;
515: }
1.55 paf 516:
517: // expression ops: binary
518: case OP_SUB:
1.53 paf 519: {
1.61 paf 520: Value *b=POP(); Value *a=POP();
1.128 paf 521: Value *value=NEW VDouble(pool(), a->as_double() - b->as_double());
1.53 paf 522: PUSH(value);
523: break;
524: }
1.55 paf 525: case OP_ADD:
1.53 paf 526: {
1.61 paf 527: Value *b=POP(); Value *a=POP();
1.128 paf 528: Value *value=NEW VDouble(pool(), a->as_double() + b->as_double());
1.53 paf 529: PUSH(value);
530: break;
531: }
1.49 paf 532: case OP_MUL:
533: {
1.61 paf 534: Value *b=POP(); Value *a=POP();
1.128 paf 535: Value *value=NEW VDouble(pool(), a->as_double() * b->as_double());
1.53 paf 536: PUSH(value);
537: break;
538: }
539: case OP_DIV:
540: {
1.61 paf 541: Value *b=POP(); Value *a=POP();
1.170 parser 542:
543: double a_double=a->as_double();
544: double b_double=b->as_double();
545:
1.171 parser 546: if(b_double == 0) {
547: const String *problem_source=&b->as_string();
548: #ifndef NO_STRING_ORIGIN
549: if(!problem_source->origin().file)
1.172 parser 550: problem_source=&b->name();
1.171 parser 551: #endif
1.170 parser 552: THROW(0, 0,
1.171 parser 553: problem_source,
1.170 parser 554: "Division by zero");
1.171 parser 555: }
1.170 parser 556:
1.171 parser 557: Value *value=NEW VDouble(pool(), a_double / b_double);
1.54 paf 558: PUSH(value);
559: break;
560: }
1.55 paf 561: case OP_MOD:
562: {
1.61 paf 563: Value *b=POP(); Value *a=POP();
1.170 parser 564:
1.173 parser 565: double a_double=a->as_double();
566: double b_double=b->as_double();
1.170 parser 567:
1.173 parser 568: if(b_double == 0) {
1.171 parser 569: const String *problem_source=&b->as_string();
570: #ifndef NO_STRING_ORIGIN
571: if(!problem_source->origin().file)
1.172 parser 572: problem_source=&b->name();
1.171 parser 573: #endif
1.170 parser 574: THROW(0, 0,
1.171 parser 575: problem_source,
1.170 parser 576: "Modulus by zero");
1.171 parser 577: }
1.170 parser 578:
1.173 parser 579: Value *value=NEW VDouble(pool(), fmod(a_double, b_double));
1.55 paf 580: PUSH(value);
581: break;
582: }
583: case OP_BIN_AND:
1.54 paf 584: {
1.61 paf 585: Value *b=POP(); Value *a=POP();
1.78 paf 586: Value *value=NEW VDouble(pool(),
1.155 parser 587: a->as_int() &
588: b->as_int());
1.54 paf 589: PUSH(value);
590: break;
591: }
1.55 paf 592: case OP_BIN_OR:
1.54 paf 593: {
1.61 paf 594: Value *b=POP(); Value *a=POP();
1.78 paf 595: Value *value=NEW VDouble(pool(),
1.155 parser 596: a->as_int() |
597: b->as_int());
1.55 paf 598: PUSH(value);
599: break;
600: }
1.56 paf 601: case OP_BIN_XOR:
602: {
1.61 paf 603: Value *b=POP(); Value *a=POP();
1.78 paf 604: Value *value=NEW VDouble(pool(),
1.155 parser 605: a->as_int() ^
606: b->as_int());
1.56 paf 607: PUSH(value);
608: break;
609: }
1.55 paf 610: case OP_LOG_AND:
611: {
1.61 paf 612: Value *b=POP(); Value *a=POP();
1.128 paf 613: Value *value=NEW VBool(pool(), a->as_bool() && b->as_bool());
1.55 paf 614: PUSH(value);
615: break;
616: }
617: case OP_LOG_OR:
618: {
1.61 paf 619: Value *b=POP(); Value *a=POP();
1.128 paf 620: Value *value=NEW VBool(pool(), a->as_bool() || b->as_bool());
1.56 paf 621: PUSH(value);
622: break;
623: }
624: case OP_LOG_XOR:
625: {
1.61 paf 626: Value *b=POP(); Value *a=POP();
1.128 paf 627: Value *value=NEW VBool(pool(), a->as_bool() ^ b->as_bool());
1.55 paf 628: PUSH(value);
629: break;
630: }
631: case OP_NUM_LT:
632: {
1.61 paf 633: Value *b=POP(); Value *a=POP();
1.128 paf 634: Value *value=NEW VBool(pool(), a->as_double() < b->as_double());
1.55 paf 635: PUSH(value);
636: break;
637: }
638: case OP_NUM_GT:
639: {
1.61 paf 640: Value *b=POP(); Value *a=POP();
1.128 paf 641: Value *value=NEW VBool(pool(), a->as_double() > b->as_double());
1.55 paf 642: PUSH(value);
643: break;
644: }
645: case OP_NUM_LE:
646: {
1.61 paf 647: Value *b=POP(); Value *a=POP();
1.128 paf 648: Value *value=NEW VBool(pool(), a->as_double() <= b->as_double());
1.55 paf 649: PUSH(value);
650: break;
651: }
652: case OP_NUM_GE:
653: {
1.61 paf 654: Value *b=POP(); Value *a=POP();
1.128 paf 655: Value *value=NEW VBool(pool(), a->as_double() >= b->as_double());
1.55 paf 656: PUSH(value);
657: break;
658: }
659: case OP_NUM_EQ:
660: {
1.61 paf 661: Value *b=POP(); Value *a=POP();
1.128 paf 662: Value *value=NEW VBool(pool(), a->as_double() == b->as_double());
1.55 paf 663: PUSH(value);
664: break;
665: }
666: case OP_NUM_NE:
667: {
1.61 paf 668: Value *b=POP(); Value *a=POP();
1.128 paf 669: Value *value=NEW VBool(pool(), a->as_double() != b->as_double());
1.54 paf 670: PUSH(value);
671: break;
672: }
1.58 paf 673: case OP_STR_LT:
674: {
1.61 paf 675: Value *b=POP(); Value *a=POP();
1.78 paf 676: Value *value=NEW VBool(pool(), a->as_string() < b->as_string());
1.58 paf 677: PUSH(value);
678: break;
679: }
680: case OP_STR_GT:
681: {
1.61 paf 682: Value *b=POP(); Value *a=POP();
1.78 paf 683: Value *value=NEW VBool(pool(), a->as_string() > b->as_string());
1.58 paf 684: PUSH(value);
685: break;
686: }
1.55 paf 687: case OP_STR_LE:
1.58 paf 688: {
1.61 paf 689: Value *b=POP(); Value *a=POP();
1.78 paf 690: Value *value=NEW VBool(pool(), a->as_string() <= b->as_string());
1.58 paf 691: PUSH(value);
692: break;
693: }
1.55 paf 694: case OP_STR_GE:
1.54 paf 695: {
1.61 paf 696: Value *b=POP(); Value *a=POP();
1.78 paf 697: Value *value=NEW VBool(pool(), a->as_string() >= b->as_string());
1.58 paf 698: PUSH(value);
699: break;
700: }
701: case OP_STR_EQ:
702: {
1.61 paf 703: Value *b=POP(); Value *a=POP();
1.78 paf 704: Value *value=NEW VBool(pool(), a->as_string() == b->as_string());
1.58 paf 705: PUSH(value);
706: break;
707: }
708: case OP_STR_NE:
709: {
1.61 paf 710: Value *b=POP(); Value *a=POP();
1.78 paf 711: Value *value=NEW VBool(pool(), a->as_string() != b->as_string());
1.103 paf 712: PUSH(value);
713: break;
714: }
715: case OP_IS:
716: {
717: Value *b=POP(); Value *a=POP();
718: Value *value=NEW VBool(pool(), b->as_string() == a->type());
1.49 paf 719: PUSH(value);
1.28 paf 720: break;
721: }
722:
1.11 paf 723: default:
1.67 paf 724: THROW(0,0,
725: 0,
1.139 paf 726: "invalid opcode %d", op.code);
1.11 paf 727: }
728: }
1.1 paf 729: }
1.17 paf 730:
731: Value *Request::get_element() {
1.82 paf 732: const String& name=POP_NAME();
1.24 paf 733: Value *ncontext=POP();
1.181 parser 734: Value *value=ncontext->get_element(name);
735: if(!value)
736: if(Method* method=OP.get_method(name)) { // maybe operator?
737: // as if that method were in self and we have normal dynamic method here
738: Junction& junction=*NEW Junction(pool(),
739: *self, self->get_class(), method, 0,0,0,0);
740: value=NEW VJunction(junction);
741: }
1.76 paf 742: if(value)
1.92 paf 743: value=&process(*value, &name); // process possible code-junction
1.76 paf 744: else {
1.167 parser 745: value=NEW VVoid(pool());
1.76 paf 746: value->set_name(name);
747: }
1.63 paf 748:
1.17 paf 749: return value;
1.34 paf 750: }
1.70 paf 751:
1.162 parser 752: /** @param intercept_string
1.116 paf 753: - true:
754: they want result=string value,
755: possible object result goes to wcontext
756: - false:
757: they want any result[string|object]
758: nothing goes to wcontext.
1.125 paf 759: used in @c (expression) params evaluation
1.116 paf 760: */
1.92 paf 761: Value& Request::process(Value& value, const String *name, bool intercept_string) {
1.91 paf 762: Value *result;
1.70 paf 763: Junction *junction=value.get_junction();
764: if(junction && junction->code) { // is it a code-junction?
1.92 paf 765: // process it
1.157 parser 766: #ifdef DEBUG_EXECUTE
1.158 parser 767: debug_printf(pool(), "ja->\n");
1.157 parser 768: #endif
1.70 paf 769: PUSH(self);
770: PUSH(root);
771: PUSH(rcontext);
1.129 paf 772: PUSH(wcontext);
1.70 paf 773:
1.71 paf 774: WContext *frame;
1.109 paf 775: // for expression method params
776: // wcontext is set 0
777: // using the fact in decision "which wwrapper to use"
778: bool using_code_frame=intercept_string && junction->wcontext;
779: if(using_code_frame) {
1.71 paf 780: // almost plain wwrapper about junction wcontext,
781: // BUT intercepts string writes
782: frame=NEW VCodeFrame(pool(), *junction->wcontext);
783: } else {
784: // plain wwrapper
1.186 parser 785: frame=NEW WWrapper(pool(), 0/*empty*/);
1.71 paf 786: }
787:
1.183 parser 788: //frame->set_name(value.name());
1.71 paf 789: wcontext=frame;
1.70 paf 790: self=&junction->self;
791: root=junction->root;
792: rcontext=junction->rcontext;
793: execute(*junction->code);
1.109 paf 794: if(using_code_frame) {
1.71 paf 795: // CodeFrame soul:
796: // string writes were intercepted
797: // returning them as the result of getting code-junction
798: result=NEW VString(*frame->get_string());
799: } else
800: result=frame->result();
1.70 paf 801:
802: wcontext=static_cast<WContext *>(POP());
803: rcontext=POP();
804: root=POP();
805: self=static_cast<VAliased *>(POP());
806:
1.157 parser 807: #ifdef DEBUG_EXECUTE
1.158 parser 808: debug_printf(pool(), "<-ja returned");
1.157 parser 809: #endif
1.70 paf 810: } else
1.91 paf 811: result=&value;
812:
813: if(name)
814: result->set_name(*name);
815: return *result;
1.85 paf 816: }
817:
1.176 parser 818: const String *Request::execute_method(Value& aself, const Method& method,
819: bool return_cstr) {
1.99 paf 820: PUSH(self);
821: PUSH(root);
822: PUSH(rcontext);
823: PUSH(wcontext);
824:
825: // initialize contexts
826: root=rcontext=self=&aself;
1.186 parser 827: wcontext=NEW WWrapper(pool(), &aself);
1.99 paf 828:
829: // execute!
830: execute(*method.parser_code);
831:
832: // result
1.114 paf 833: const String *result;
1.99 paf 834: if(return_cstr)
1.114 paf 835: result=&wcontext->as_string();
1.99 paf 836: else
837: result=0; // ignore result
838:
839: wcontext=static_cast<WContext *>(POP());
840: rcontext=POP();
841: root=POP();
842: self=static_cast<VAliased *>(POP());
843:
844: // return
845: return result;
846: }
847:
1.176 parser 848: const String *Request::execute_virtual_method(Value& aself,
849: const String& method_name,
850: bool return_cstr) {
1.99 paf 851: if(Value *value=aself.get_element(method_name))
852: if(Junction *junction=value->get_junction())
853: if(const Method *method=junction->method)
854: return execute_method(aself, *method, return_cstr);
1.188 ! parser 855:
1.176 parser 856: return 0;
857: }
858:
1.178 parser 859: const String *Request::execute_nonvirtual_method(VStateless_class& aclass,
1.176 parser 860: const String& method_name,
861: bool return_cstr) {
1.178 parser 862: if(const Method *method=aclass.get_method(method_name))
1.179 parser 863: return execute_method(aclass, *method, return_cstr);
1.99 paf 864:
1.85 paf 865: return 0;
1.70 paf 866: }