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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: */
1.184 ! parser 8: static const char *RCSId="$Id: execute.C,v 1.183 2001/07/25 09:57:33 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:
1.159 parser 27: const uint ANTI_ENDLESS_EXECUTE_RECOURSION=500;
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
1.51 paf 35: "WITH_SELF", "WITH_ROOT", "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",
1.51 paf 44: "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
1.37 paf 187: case OP_WITH_SELF:
188: {
189: PUSH(self);
190: break;
191: }
192: case OP_WITH_ROOT:
1.11 paf 193: {
1.37 paf 194: PUSH(root);
1.13 paf 195: break;
1.11 paf 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;
1.138 paf 298: wcontext=NEW WWrapper(pool(), 0 /*empty*/, true /*constructing*/);
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);
1.138 paf 313: wcontext=NEW WWrapper(pool(), 0 /*empty*/, false /*not constructing*/);
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)
1.28 paf 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:
1.138 paf 346: bool is_constructor=
347: wcontext->constructing() && // constructing?
348: wcontext->somebody_entered_some_class(); // ^class:method[..]?
349: if(is_constructor)
350: wcontext->constructing(false);
351:
1.156 parser 352: VMethodFrame *frame=NEW VMethodFrame(pool(), value->name(), *junction, is_constructor);
1.28 paf 353: PUSH(frame);
354: break;
355: }
356: case OP_STORE_PARAM:
357: {
358: Value *value=POP();
1.73 paf 359: VMethodFrame *frame=static_cast<VMethodFrame *>(stack.top_value());
1.92 paf 360: frame->store_param(frame->name(), value);
1.29 paf 361: break;
362: }
363:
364: case OP_CALL:
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();
1.180 parser 377: // not ^name.method call, name:method call; and
1.156 parser 378: // is context object or class & is it my class or my parent's class and?
1.100 paf 379: VStateless_class *read_class=rcontext->get_class();
1.180 parser 380: if(
381: !(wcontext->somebody_entered_some_object() &&
382: !wcontext->somebody_entered_some_class()) &&
1.150 paf 383: read_class && read_class->is_or_derived_from(*called_class)) // yes
1.74 paf 384: self=rcontext; // class dynamic call
1.75 paf 385: else // no, not me or relative of mine (total stranger)
1.153 paf 386: // were are constructing something and
1.156 parser 387: // our constructor is just method call and
388: // not static-only-method call
1.153 paf 389: if(frame->is_constructor &&
1.156 parser 390: wcontext->somebody_entered_some_object()==1 &&
391: frame->junction.method->call_type!=Method::CT_STATIC) {
1.138 paf 392: // this is a constructor call
1.149 paf 393: // some stateless_object creatable derivates
394: if(Value *value=called_class->create_new_value(pool()))
395: self=value;
1.121 paf 396: else // stateful object
1.94 paf 397: self=NEW VObject(pool(), *called_class);
1.83 paf 398: frame->write(*self,
1.136 paf 399: String::UL_CLEAN // not used, always an object, not string
1.83 paf 400: );
1.75 paf 401: } else
402: self=&frame->junction.self; // no, static or simple dynamic call
403:
1.45 paf 404: frame->set_self(*self);
1.29 paf 405: root=rcontext=wcontext=frame;
1.47 paf 406: {
1.48 paf 407: // take object or class from any wrappers
1.102 paf 408: // and substitute class alias to the class they are called AS
409: Temp_alias temp_alias(*self->get_aliased(), *frame->junction.vclass);
1.68 paf 410:
1.99 paf 411: const Method& method=*frame->junction.method;
1.134 paf 412: Method::Call_type call_type=
413: called_class==self ? Method::CT_STATIC : Method::CT_DYNAMIC;
414: if(
415: method.call_type==Method::CT_ANY ||
416: method.call_type==call_type) // allowed call type?
417: if(method.native_code) { // native code?
1.154 paf 418: method.check_actual_numbered_params(pool(),
1.134 paf 419: frame->junction.self,
420: frame->name(), frame->numbered_params());
1.160 parser 421: method.native_code(
1.134 paf 422: *this,
423: frame->name(), frame->numbered_params()); // execute it
1.159 parser 424: } else { // parser code
425: if(++anti_endless_execute_recoursion==ANTI_ENDLESS_EXECUTE_RECOURSION) {
426: anti_endless_execute_recoursion=0; // give @exception a chance
427: THROW(0, 0,
1.160 parser 428: &frame->name(),
1.159 parser 429: "endless recursion detected");
430: }
431:
1.134 paf 432: execute(*method.parser_code); // execute it
1.159 parser 433: anti_endless_execute_recoursion--;
434: }
1.134 paf 435: else
436: THROW(0, 0,
437: &frame->name(),
438: "is not allowed to be called %s",
439: call_type==Method::CT_STATIC?"statically":"dynamically");
440:
1.47 paf 441: }
1.36 paf 442: Value *value=wcontext->result();
1.45 paf 443:
444: wcontext=static_cast<WContext *>(POP());
445: rcontext=POP();
446: root=POP();
447: self=static_cast<VAliased *>(POP());
1.62 paf 448:
1.61 paf 449: PUSH(value);
1.157 parser 450: #ifdef DEBUG_EXECUTE
1.158 parser 451: debug_printf(pool(), "<-returned");
1.157 parser 452: #endif
1.49 paf 453: break;
454: }
455:
1.55 paf 456: // expression ops: unary
457: case OP_NEG:
458: {
459: Value *operand=POP();
1.128 paf 460: Value *value=NEW VDouble(pool(), -operand->as_double());
1.55 paf 461: PUSH(value);
462: break;
463: }
464: case OP_INV:
465: {
466: Value *operand=POP();
1.155 parser 467: Value *value=NEW VDouble(pool(), ~operand->as_int());
1.55 paf 468: PUSH(value);
469: break;
470: }
471: case OP_NOT:
472: {
473: Value *operand=POP();
1.128 paf 474: Value *value=NEW VBool(pool(), !operand->as_bool());
1.55 paf 475: PUSH(value);
476: break;
477: }
1.62 paf 478: case OP_DEF:
479: {
480: Value *operand=POP();
1.128 paf 481: Value *value=NEW VBool(pool(), operand->is_defined());
1.62 paf 482: PUSH(value);
483: break;
484: }
485: case OP_IN:
486: {
487: Value *operand=POP();
1.110 paf 488: const char *path=operand->as_string().cstr();
1.151 paf 489: Value *value=NEW VBool(pool(),
490: info.uri && strncmp(path, info.uri, strlen(path))==0);
1.62 paf 491: PUSH(value);
492: break;
493: }
494: case OP_FEXISTS:
495: {
496: Value *operand=POP();
1.127 paf 497: Value *value=NEW VBool(pool(),
498: file_readable(absolute(operand->as_string())));
1.148 paf 499: PUSH(value);
500: break;
501: }
502: case OP_DEXISTS:
503: {
504: Value *operand=POP();
505: Value *value=NEW VBool(pool(),
506: dir_readable(absolute(operand->as_string())));
1.62 paf 507: PUSH(value);
508: break;
509: }
1.55 paf 510:
511: // expression ops: binary
512: case OP_SUB:
1.53 paf 513: {
1.61 paf 514: Value *b=POP(); Value *a=POP();
1.128 paf 515: Value *value=NEW VDouble(pool(), a->as_double() - b->as_double());
1.53 paf 516: PUSH(value);
517: break;
518: }
1.55 paf 519: case OP_ADD:
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: }
1.49 paf 526: case OP_MUL:
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: }
533: case OP_DIV:
534: {
1.61 paf 535: Value *b=POP(); Value *a=POP();
1.170 parser 536:
537: double a_double=a->as_double();
538: double b_double=b->as_double();
539:
1.171 parser 540: if(b_double == 0) {
541: const String *problem_source=&b->as_string();
542: #ifndef NO_STRING_ORIGIN
543: if(!problem_source->origin().file)
1.172 parser 544: problem_source=&b->name();
1.171 parser 545: #endif
1.170 parser 546: THROW(0, 0,
1.171 parser 547: problem_source,
1.170 parser 548: "Division by zero");
1.171 parser 549: }
1.170 parser 550:
1.171 parser 551: Value *value=NEW VDouble(pool(), a_double / b_double);
1.54 paf 552: PUSH(value);
553: break;
554: }
1.55 paf 555: case OP_MOD:
556: {
1.61 paf 557: Value *b=POP(); Value *a=POP();
1.170 parser 558:
1.173 parser 559: double a_double=a->as_double();
560: double b_double=b->as_double();
1.170 parser 561:
1.173 parser 562: if(b_double == 0) {
1.171 parser 563: const String *problem_source=&b->as_string();
564: #ifndef NO_STRING_ORIGIN
565: if(!problem_source->origin().file)
1.172 parser 566: problem_source=&b->name();
1.171 parser 567: #endif
1.170 parser 568: THROW(0, 0,
1.171 parser 569: problem_source,
1.170 parser 570: "Modulus by zero");
1.171 parser 571: }
1.170 parser 572:
1.173 parser 573: Value *value=NEW VDouble(pool(), fmod(a_double, b_double));
1.55 paf 574: PUSH(value);
575: break;
576: }
577: case OP_BIN_AND:
1.54 paf 578: {
1.61 paf 579: Value *b=POP(); Value *a=POP();
1.78 paf 580: Value *value=NEW VDouble(pool(),
1.155 parser 581: a->as_int() &
582: b->as_int());
1.54 paf 583: PUSH(value);
584: break;
585: }
1.55 paf 586: case OP_BIN_OR:
1.54 paf 587: {
1.61 paf 588: Value *b=POP(); Value *a=POP();
1.78 paf 589: Value *value=NEW VDouble(pool(),
1.155 parser 590: a->as_int() |
591: b->as_int());
1.55 paf 592: PUSH(value);
593: break;
594: }
1.56 paf 595: case OP_BIN_XOR:
596: {
1.61 paf 597: Value *b=POP(); Value *a=POP();
1.78 paf 598: Value *value=NEW VDouble(pool(),
1.155 parser 599: a->as_int() ^
600: b->as_int());
1.56 paf 601: PUSH(value);
602: break;
603: }
1.55 paf 604: case OP_LOG_AND:
605: {
1.61 paf 606: Value *b=POP(); Value *a=POP();
1.128 paf 607: Value *value=NEW VBool(pool(), a->as_bool() && b->as_bool());
1.55 paf 608: PUSH(value);
609: break;
610: }
611: case OP_LOG_OR:
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());
1.56 paf 615: PUSH(value);
616: break;
617: }
618: case OP_LOG_XOR:
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());
1.55 paf 622: PUSH(value);
623: break;
624: }
625: case OP_NUM_LT:
626: {
1.61 paf 627: Value *b=POP(); Value *a=POP();
1.128 paf 628: Value *value=NEW VBool(pool(), a->as_double() < b->as_double());
1.55 paf 629: PUSH(value);
630: break;
631: }
632: case OP_NUM_GT:
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_LE:
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_GE:
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_EQ:
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_NE:
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());
1.54 paf 664: PUSH(value);
665: break;
666: }
1.58 paf 667: case OP_STR_LT:
668: {
1.61 paf 669: Value *b=POP(); Value *a=POP();
1.78 paf 670: Value *value=NEW VBool(pool(), a->as_string() < b->as_string());
1.58 paf 671: PUSH(value);
672: break;
673: }
674: case OP_STR_GT:
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: }
1.55 paf 681: case OP_STR_LE:
1.58 paf 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_GE:
1.54 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: }
695: case OP_STR_EQ:
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_NE:
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());
1.103 paf 706: PUSH(value);
707: break;
708: }
709: case OP_IS:
710: {
711: Value *b=POP(); Value *a=POP();
712: Value *value=NEW VBool(pool(), b->as_string() == a->type());
1.49 paf 713: PUSH(value);
1.28 paf 714: break;
715: }
716:
1.11 paf 717: default:
1.67 paf 718: THROW(0,0,
719: 0,
1.139 paf 720: "invalid opcode %d", op.code);
1.11 paf 721: }
722: }
1.1 paf 723: }
1.17 paf 724:
725: Value *Request::get_element() {
1.82 paf 726: const String& name=POP_NAME();
1.24 paf 727: Value *ncontext=POP();
1.181 parser 728: Value *value=ncontext->get_element(name);
729: if(!value)
730: if(Method* method=OP.get_method(name)) { // maybe operator?
731: // as if that method were in self and we have normal dynamic method here
732: Junction& junction=*NEW Junction(pool(),
733: *self, self->get_class(), method, 0,0,0,0);
734: value=NEW VJunction(junction);
735: }
1.76 paf 736: if(value)
1.92 paf 737: value=&process(*value, &name); // process possible code-junction
1.76 paf 738: else {
1.167 parser 739: value=NEW VVoid(pool());
1.76 paf 740: value->set_name(name);
741: }
1.63 paf 742:
1.17 paf 743: return value;
1.34 paf 744: }
1.70 paf 745:
1.162 parser 746: /** @param intercept_string
1.116 paf 747: - true:
748: they want result=string value,
749: possible object result goes to wcontext
750: - false:
751: they want any result[string|object]
752: nothing goes to wcontext.
1.125 paf 753: used in @c (expression) params evaluation
1.116 paf 754: */
1.92 paf 755: Value& Request::process(Value& value, const String *name, bool intercept_string) {
1.91 paf 756: Value *result;
1.70 paf 757: Junction *junction=value.get_junction();
758: if(junction && junction->code) { // is it a code-junction?
1.92 paf 759: // process it
1.157 parser 760: #ifdef DEBUG_EXECUTE
1.158 parser 761: debug_printf(pool(), "ja->\n");
1.157 parser 762: #endif
1.70 paf 763: PUSH(self);
764: PUSH(root);
765: PUSH(rcontext);
1.129 paf 766: PUSH(wcontext);
1.70 paf 767:
1.71 paf 768: WContext *frame;
1.109 paf 769: // for expression method params
770: // wcontext is set 0
771: // using the fact in decision "which wwrapper to use"
772: bool using_code_frame=intercept_string && junction->wcontext;
773: if(using_code_frame) {
1.71 paf 774: // almost plain wwrapper about junction wcontext,
775: // BUT intercepts string writes
776: frame=NEW VCodeFrame(pool(), *junction->wcontext);
777: } else {
778: // plain wwrapper
1.108 paf 779: frame=NEW WWrapper(pool(), 0/*empty*/, false/*not constructing*/);
1.71 paf 780: }
781:
1.183 parser 782: //frame->set_name(value.name());
1.71 paf 783: wcontext=frame;
1.70 paf 784: self=&junction->self;
785: root=junction->root;
786: rcontext=junction->rcontext;
787: execute(*junction->code);
1.109 paf 788: if(using_code_frame) {
1.71 paf 789: // CodeFrame soul:
790: // string writes were intercepted
791: // returning them as the result of getting code-junction
792: result=NEW VString(*frame->get_string());
793: } else
794: result=frame->result();
1.70 paf 795:
796: wcontext=static_cast<WContext *>(POP());
797: rcontext=POP();
798: root=POP();
799: self=static_cast<VAliased *>(POP());
800:
1.157 parser 801: #ifdef DEBUG_EXECUTE
1.158 parser 802: debug_printf(pool(), "<-ja returned");
1.157 parser 803: #endif
1.70 paf 804: } else
1.91 paf 805: result=&value;
806:
807: if(name)
808: result->set_name(*name);
809: return *result;
1.85 paf 810: }
811:
1.176 parser 812: const String *Request::execute_method(Value& aself, const Method& method,
813: bool return_cstr) {
1.99 paf 814: PUSH(self);
815: PUSH(root);
816: PUSH(rcontext);
817: PUSH(wcontext);
818:
819: // initialize contexts
820: root=rcontext=self=&aself;
1.138 paf 821: wcontext=NEW WWrapper(pool(), &aself, false /*not constructing*/);
1.99 paf 822:
823: // execute!
824: execute(*method.parser_code);
825:
826: // result
1.114 paf 827: const String *result;
1.99 paf 828: if(return_cstr)
1.114 paf 829: result=&wcontext->as_string();
1.99 paf 830: else
831: result=0; // ignore result
832:
833: wcontext=static_cast<WContext *>(POP());
834: rcontext=POP();
835: root=POP();
836: self=static_cast<VAliased *>(POP());
837:
838: // return
839: return result;
840: }
841:
1.176 parser 842: const String *Request::execute_virtual_method(Value& aself,
843: const String& method_name,
844: bool return_cstr) {
1.99 paf 845: if(Value *value=aself.get_element(method_name))
846: if(Junction *junction=value->get_junction())
847: if(const Method *method=junction->method)
848: return execute_method(aself, *method, return_cstr);
1.176 parser 849:
850: return 0;
851: }
852:
1.178 parser 853: const String *Request::execute_nonvirtual_method(VStateless_class& aclass,
1.176 parser 854: const String& method_name,
855: bool return_cstr) {
1.178 parser 856: if(const Method *method=aclass.get_method(method_name))
1.179 parser 857: return execute_method(aclass, *method, return_cstr);
1.99 paf 858:
1.85 paf 859: return 0;
1.70 paf 860: }