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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: */
1.185 ! parser 8: static const char *RCSId="$Id: execute.C,v 1.184 2001/07/25 10:12:13 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
1.185 ! parser 35: "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",
1.185 ! parser 44: "CALL_CONSTRUCTOR", "OP_CALL_METHOD",
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: }
1.15 paf 192: case OP_WITH_READ:
193: {
1.24 paf 194: PUSH(rcontext);
1.20 paf 195: break;
196: }
1.37 paf 197: case OP_WITH_WRITE:
1.20 paf 198: {
1.37 paf 199: PUSH(wcontext);
1.20 paf 200: break;
201: }
1.37 paf 202:
1.51 paf 203: // OTHER ACTIONS BUT WITHs
1.80 paf 204: case OP_CONSTRUCT_VALUE:
1.20 paf 205: {
1.37 paf 206: Value *value=POP();
1.82 paf 207: const String& name=POP_NAME();
1.37 paf 208: Value *ncontext=POP();
1.81 paf 209: ncontext->put_element(name, value);
1.37 paf 210: value->set_name(name);
1.15 paf 211: break;
212: }
1.80 paf 213: case OP_CONSTRUCT_EXPR:
214: {
215: Value *value=POP();
1.82 paf 216: const String& name=POP_NAME();
1.80 paf 217: Value *ncontext=POP();
1.128 paf 218: ncontext->put_element(name, value->as_expr_result());
1.80 paf 219: value->set_name(name);
220: break;
221: }
1.182 parser 222: case OP_CURLY_CODE__CONSTRUCT:
223: {
224: const Array *local_ops=reinterpret_cast<const Array *>(ops.quick_get(++i));
225: #ifdef DEBUG_EXECUTE
226: debug_printf(pool(), " (%d)\n", local_ops->size());
227: debug_dump(pool(), 1, *local_ops);
228: #endif
229: Junction& j=*NEW Junction(pool(),
230: *self, 0, 0,
231: root,
232: rcontext,
233: wcontext,
234: local_ops);
235:
236: Value *value=NEW VJunction(j);
237: const String& name=POP_NAME();
238: Value *ncontext=POP();
239: ncontext->put_element(name, value);
240: value->set_name(name);
241: break;
242: }
1.108 paf 243: case OP_WRITE_VALUE:
1.13 paf 244: {
1.24 paf 245: Value *value=POP();
1.92 paf 246: write_assign_lang(*value);
1.150 paf 247:
248: // forget the fact they've entered some ^object.method[].
249: // see OP_GET_ELEMENT
250: wcontext->clear_somebody_entered_some_object();
1.86 paf 251: break;
252: }
1.108 paf 253: case OP_WRITE_EXPR_RESULT:
254: {
255: Value *value=POP();
1.128 paf 256: write_expr_result(*value->as_expr_result());
1.108 paf 257: break;
258: }
1.86 paf 259: case OP_STRING__WRITE:
260: {
261: VString *vstring=static_cast<VString *>(ops.quick_get(++i));
1.157 parser 262: #ifdef DEBUG_EXECUTE
1.158 parser 263: debug_printf(pool(), " \"%s\"", vstring->string().cstr());
1.157 parser 264: #endif
1.122 paf 265: write_no_lang(vstring->string());
1.13 paf 266: break;
1.14 paf 267: }
1.13 paf 268:
1.15 paf 269: case OP_GET_ELEMENT:
1.11 paf 270: {
1.150 paf 271: // maybe they do ^object.method[] call, remember the fact
272: wcontext->inc_somebody_entered_some_object();
273:
1.174 parser 274: //_asm int 3;
1.17 paf 275: Value *value=get_element();
1.24 paf 276: PUSH(value);
1.17 paf 277: break;
278: }
279:
1.18 paf 280: case OP_GET_ELEMENT__WRITE:
1.17 paf 281: {
282: Value *value=get_element();
1.92 paf 283: write_assign_lang(*value);
1.17 paf 284: break;
285: }
286:
1.32 paf 287:
1.17 paf 288: case OP_CREATE_EWPOOL:
289: {
1.24 paf 290: PUSH(wcontext);
1.137 paf 291: PUSH((void *)flang);
292: flang=String::UL_PASS_APPENDED;
1.138 paf 293: wcontext=NEW WWrapper(pool(), 0 /*empty*/, true /*constructing*/);
1.17 paf 294: break;
295: }
296: case OP_REDUCE_EWPOOL:
297: {
1.36 paf 298: Value *value=wcontext->result();
1.137 paf 299: flang=static_cast<String::Untaint_lang>(reinterpret_cast<int>(POP()));
1.25 paf 300: wcontext=static_cast<WContext *>(POP());
1.24 paf 301: PUSH(value);
1.13 paf 302: break;
1.15 paf 303: }
1.13 paf 304:
1.49 paf 305: case OP_CREATE_SWPOOL:
306: {
307: PUSH(wcontext);
1.138 paf 308: wcontext=NEW WWrapper(pool(), 0 /*empty*/, false /*not constructing*/);
1.49 paf 309: break;
310: }
311: case OP_REDUCE_SWPOOL:
312: {
313: // from "$a $b" part of expression taking only string value,
314: // ignoring any other content of wcontext
1.82 paf 315: const String *string=wcontext->get_string();
1.80 paf 316: Value *value;
317: if(string)
318: value=NEW VString(*string);
319: else
1.167 parser 320: NEW VVoid(pool());
1.50 paf 321: wcontext=static_cast<WContext *>(POP());
1.49 paf 322: PUSH(value);
323: break;
324: }
325:
1.51 paf 326: // CALL
1.28 paf 327: case OP_GET_METHOD_FRAME:
328: {
1.32 paf 329: Value *value=POP();
1.138 paf 330:
1.111 paf 331: // info:
332: // code compiled so that this one's always method-junction,
333: // not a code-junction
1.32 paf 334: Junction *junction=value->get_junction();
1.31 paf 335: if(!junction)
1.185 ! parser 336: THROW(0, 0,
1.42 paf 337: &value->name(),
1.111 paf 338: "(%s) not a method or junction, can not call it",
1.38 paf 339: value->type());
1.70 paf 340:
1.185 ! parser 341: VMethodFrame *frame=NEW VMethodFrame(pool(), value->name(), *junction);
1.28 paf 342: PUSH(frame);
343: break;
344: }
345: case OP_STORE_PARAM:
346: {
347: Value *value=POP();
1.73 paf 348: VMethodFrame *frame=static_cast<VMethodFrame *>(stack.top_value());
1.92 paf 349: frame->store_param(frame->name(), value);
1.29 paf 350: break;
351: }
352:
1.185 ! parser 353: case OP_CALL_METHOD:
! 354: case OP_CALL_CONSTRUCTOR:
1.29 paf 355: {
1.157 parser 356: #ifdef DEBUG_EXECUTE
1.158 parser 357: debug_printf(pool(), "->\n");
1.157 parser 358: #endif
1.34 paf 359: VMethodFrame *frame=static_cast<VMethodFrame *>(POP());
360: frame->fill_unspecified_params();
1.45 paf 361: PUSH(self);
362: PUSH(root);
363: PUSH(rcontext);
364: PUSH(wcontext);
365:
1.100 paf 366: VStateless_class *called_class=frame->junction.self.get_class();
1.185 ! parser 367: if(op.code==OP_CALL_CONSTRUCTOR) {
! 368: if(frame->junction.method->call_type!=Method::CT_STATIC) {
1.138 paf 369: // this is a constructor call
1.185 ! parser 370:
! 371: if(Value *value=called_class->create_new_value(pool())) {
! 372: // some stateless_object creatable derivates
1.149 paf 373: self=value;
1.185 ! parser 374: } else {
! 375: // stateful object
1.94 paf 376: self=NEW VObject(pool(), *called_class);
1.185 ! parser 377: }
1.83 paf 378: frame->write(*self,
1.136 paf 379: String::UL_CLEAN // not used, always an object, not string
1.83 paf 380: );
1.185 ! parser 381: } else
! 382: THROW(0, 0,
! 383: &frame->name(),
! 384: "method is static and can not be used as constructor");
! 385: } else {
! 386: // this is not constructor call
! 387:
! 388: // not ^name.method call, name:method call; and
! 389: // is context object or class & is it my class or my parent's class and?
! 390: VStateless_class *read_class=rcontext->get_class();
! 391: if(
! 392: !(wcontext->somebody_entered_some_object() &&
! 393: !wcontext->somebody_entered_some_class()) &&
! 394: read_class && read_class->is_or_derived_from(*called_class)) // yes
! 395: self=rcontext; // dynamic call
! 396: else // no, not me or relative of mine (=total stranger)
! 397: self=&frame->junction.self; // static call
! 398: }
1.75 paf 399:
1.45 paf 400: frame->set_self(*self);
1.29 paf 401: root=rcontext=wcontext=frame;
1.47 paf 402: {
1.48 paf 403: // take object or class from any wrappers
1.102 paf 404: // and substitute class alias to the class they are called AS
405: Temp_alias temp_alias(*self->get_aliased(), *frame->junction.vclass);
1.68 paf 406:
1.99 paf 407: const Method& method=*frame->junction.method;
1.134 paf 408: Method::Call_type call_type=
409: called_class==self ? Method::CT_STATIC : Method::CT_DYNAMIC;
410: if(
411: method.call_type==Method::CT_ANY ||
412: method.call_type==call_type) // allowed call type?
413: if(method.native_code) { // native code?
1.154 paf 414: method.check_actual_numbered_params(pool(),
1.134 paf 415: frame->junction.self,
416: frame->name(), frame->numbered_params());
1.160 parser 417: method.native_code(
1.134 paf 418: *this,
419: frame->name(), frame->numbered_params()); // execute it
1.159 parser 420: } else { // parser code
421: if(++anti_endless_execute_recoursion==ANTI_ENDLESS_EXECUTE_RECOURSION) {
422: anti_endless_execute_recoursion=0; // give @exception a chance
423: THROW(0, 0,
1.160 parser 424: &frame->name(),
1.159 parser 425: "endless recursion detected");
426: }
427:
1.134 paf 428: execute(*method.parser_code); // execute it
1.159 parser 429: anti_endless_execute_recoursion--;
430: }
1.134 paf 431: else
432: THROW(0, 0,
433: &frame->name(),
434: "is not allowed to be called %s",
435: call_type==Method::CT_STATIC?"statically":"dynamically");
436:
1.47 paf 437: }
1.36 paf 438: Value *value=wcontext->result();
1.45 paf 439:
440: wcontext=static_cast<WContext *>(POP());
441: rcontext=POP();
442: root=POP();
443: self=static_cast<VAliased *>(POP());
1.62 paf 444:
1.61 paf 445: PUSH(value);
1.157 parser 446: #ifdef DEBUG_EXECUTE
1.158 parser 447: debug_printf(pool(), "<-returned");
1.157 parser 448: #endif
1.49 paf 449: break;
450: }
451:
1.55 paf 452: // expression ops: unary
453: case OP_NEG:
454: {
455: Value *operand=POP();
1.128 paf 456: Value *value=NEW VDouble(pool(), -operand->as_double());
1.55 paf 457: PUSH(value);
458: break;
459: }
460: case OP_INV:
461: {
462: Value *operand=POP();
1.155 parser 463: Value *value=NEW VDouble(pool(), ~operand->as_int());
1.55 paf 464: PUSH(value);
465: break;
466: }
467: case OP_NOT:
468: {
469: Value *operand=POP();
1.128 paf 470: Value *value=NEW VBool(pool(), !operand->as_bool());
1.55 paf 471: PUSH(value);
472: break;
473: }
1.62 paf 474: case OP_DEF:
475: {
476: Value *operand=POP();
1.128 paf 477: Value *value=NEW VBool(pool(), operand->is_defined());
1.62 paf 478: PUSH(value);
479: break;
480: }
481: case OP_IN:
482: {
483: Value *operand=POP();
1.110 paf 484: const char *path=operand->as_string().cstr();
1.151 paf 485: Value *value=NEW VBool(pool(),
486: info.uri && strncmp(path, info.uri, strlen(path))==0);
1.62 paf 487: PUSH(value);
488: break;
489: }
490: case OP_FEXISTS:
491: {
492: Value *operand=POP();
1.127 paf 493: Value *value=NEW VBool(pool(),
494: file_readable(absolute(operand->as_string())));
1.148 paf 495: PUSH(value);
496: break;
497: }
498: case OP_DEXISTS:
499: {
500: Value *operand=POP();
501: Value *value=NEW VBool(pool(),
502: dir_readable(absolute(operand->as_string())));
1.62 paf 503: PUSH(value);
504: break;
505: }
1.55 paf 506:
507: // expression ops: binary
508: case OP_SUB:
1.53 paf 509: {
1.61 paf 510: Value *b=POP(); Value *a=POP();
1.128 paf 511: Value *value=NEW VDouble(pool(), a->as_double() - b->as_double());
1.53 paf 512: PUSH(value);
513: break;
514: }
1.55 paf 515: case OP_ADD:
1.53 paf 516: {
1.61 paf 517: Value *b=POP(); Value *a=POP();
1.128 paf 518: Value *value=NEW VDouble(pool(), a->as_double() + b->as_double());
1.53 paf 519: PUSH(value);
520: break;
521: }
1.49 paf 522: case OP_MUL:
523: {
1.61 paf 524: Value *b=POP(); Value *a=POP();
1.128 paf 525: Value *value=NEW VDouble(pool(), a->as_double() * b->as_double());
1.53 paf 526: PUSH(value);
527: break;
528: }
529: case OP_DIV:
530: {
1.61 paf 531: Value *b=POP(); Value *a=POP();
1.170 parser 532:
533: double a_double=a->as_double();
534: double b_double=b->as_double();
535:
1.171 parser 536: if(b_double == 0) {
537: const String *problem_source=&b->as_string();
538: #ifndef NO_STRING_ORIGIN
539: if(!problem_source->origin().file)
1.172 parser 540: problem_source=&b->name();
1.171 parser 541: #endif
1.170 parser 542: THROW(0, 0,
1.171 parser 543: problem_source,
1.170 parser 544: "Division by zero");
1.171 parser 545: }
1.170 parser 546:
1.171 parser 547: Value *value=NEW VDouble(pool(), a_double / b_double);
1.54 paf 548: PUSH(value);
549: break;
550: }
1.55 paf 551: case OP_MOD:
552: {
1.61 paf 553: Value *b=POP(); Value *a=POP();
1.170 parser 554:
1.173 parser 555: double a_double=a->as_double();
556: double b_double=b->as_double();
1.170 parser 557:
1.173 parser 558: if(b_double == 0) {
1.171 parser 559: const String *problem_source=&b->as_string();
560: #ifndef NO_STRING_ORIGIN
561: if(!problem_source->origin().file)
1.172 parser 562: problem_source=&b->name();
1.171 parser 563: #endif
1.170 parser 564: THROW(0, 0,
1.171 parser 565: problem_source,
1.170 parser 566: "Modulus by zero");
1.171 parser 567: }
1.170 parser 568:
1.173 parser 569: Value *value=NEW VDouble(pool(), fmod(a_double, b_double));
1.55 paf 570: PUSH(value);
571: break;
572: }
573: case OP_BIN_AND:
1.54 paf 574: {
1.61 paf 575: Value *b=POP(); Value *a=POP();
1.78 paf 576: Value *value=NEW VDouble(pool(),
1.155 parser 577: a->as_int() &
578: b->as_int());
1.54 paf 579: PUSH(value);
580: break;
581: }
1.55 paf 582: case OP_BIN_OR:
1.54 paf 583: {
1.61 paf 584: Value *b=POP(); Value *a=POP();
1.78 paf 585: Value *value=NEW VDouble(pool(),
1.155 parser 586: a->as_int() |
587: b->as_int());
1.55 paf 588: PUSH(value);
589: break;
590: }
1.56 paf 591: case OP_BIN_XOR:
592: {
1.61 paf 593: Value *b=POP(); Value *a=POP();
1.78 paf 594: Value *value=NEW VDouble(pool(),
1.155 parser 595: a->as_int() ^
596: b->as_int());
1.56 paf 597: PUSH(value);
598: break;
599: }
1.55 paf 600: case OP_LOG_AND:
601: {
1.61 paf 602: Value *b=POP(); Value *a=POP();
1.128 paf 603: Value *value=NEW VBool(pool(), a->as_bool() && b->as_bool());
1.55 paf 604: PUSH(value);
605: break;
606: }
607: case OP_LOG_OR:
608: {
1.61 paf 609: Value *b=POP(); Value *a=POP();
1.128 paf 610: Value *value=NEW VBool(pool(), a->as_bool() || b->as_bool());
1.56 paf 611: PUSH(value);
612: break;
613: }
614: case OP_LOG_XOR:
615: {
1.61 paf 616: Value *b=POP(); Value *a=POP();
1.128 paf 617: Value *value=NEW VBool(pool(), a->as_bool() ^ b->as_bool());
1.55 paf 618: PUSH(value);
619: break;
620: }
621: case OP_NUM_LT:
622: {
1.61 paf 623: Value *b=POP(); Value *a=POP();
1.128 paf 624: Value *value=NEW VBool(pool(), a->as_double() < b->as_double());
1.55 paf 625: PUSH(value);
626: break;
627: }
628: case OP_NUM_GT:
629: {
1.61 paf 630: Value *b=POP(); Value *a=POP();
1.128 paf 631: Value *value=NEW VBool(pool(), a->as_double() > b->as_double());
1.55 paf 632: PUSH(value);
633: break;
634: }
635: case OP_NUM_LE:
636: {
1.61 paf 637: Value *b=POP(); Value *a=POP();
1.128 paf 638: Value *value=NEW VBool(pool(), a->as_double() <= b->as_double());
1.55 paf 639: PUSH(value);
640: break;
641: }
642: case OP_NUM_GE:
643: {
1.61 paf 644: Value *b=POP(); Value *a=POP();
1.128 paf 645: Value *value=NEW VBool(pool(), a->as_double() >= b->as_double());
1.55 paf 646: PUSH(value);
647: break;
648: }
649: case OP_NUM_EQ:
650: {
1.61 paf 651: Value *b=POP(); Value *a=POP();
1.128 paf 652: Value *value=NEW VBool(pool(), a->as_double() == b->as_double());
1.55 paf 653: PUSH(value);
654: break;
655: }
656: case OP_NUM_NE:
657: {
1.61 paf 658: Value *b=POP(); Value *a=POP();
1.128 paf 659: Value *value=NEW VBool(pool(), a->as_double() != b->as_double());
1.54 paf 660: PUSH(value);
661: break;
662: }
1.58 paf 663: case OP_STR_LT:
664: {
1.61 paf 665: Value *b=POP(); Value *a=POP();
1.78 paf 666: Value *value=NEW VBool(pool(), a->as_string() < b->as_string());
1.58 paf 667: PUSH(value);
668: break;
669: }
670: case OP_STR_GT:
671: {
1.61 paf 672: Value *b=POP(); Value *a=POP();
1.78 paf 673: Value *value=NEW VBool(pool(), a->as_string() > b->as_string());
1.58 paf 674: PUSH(value);
675: break;
676: }
1.55 paf 677: case OP_STR_LE:
1.58 paf 678: {
1.61 paf 679: Value *b=POP(); Value *a=POP();
1.78 paf 680: Value *value=NEW VBool(pool(), a->as_string() <= b->as_string());
1.58 paf 681: PUSH(value);
682: break;
683: }
1.55 paf 684: case OP_STR_GE:
1.54 paf 685: {
1.61 paf 686: Value *b=POP(); Value *a=POP();
1.78 paf 687: Value *value=NEW VBool(pool(), a->as_string() >= b->as_string());
1.58 paf 688: PUSH(value);
689: break;
690: }
691: case OP_STR_EQ:
692: {
1.61 paf 693: Value *b=POP(); Value *a=POP();
1.78 paf 694: Value *value=NEW VBool(pool(), a->as_string() == b->as_string());
1.58 paf 695: PUSH(value);
696: break;
697: }
698: case OP_STR_NE:
699: {
1.61 paf 700: Value *b=POP(); Value *a=POP();
1.78 paf 701: Value *value=NEW VBool(pool(), a->as_string() != b->as_string());
1.103 paf 702: PUSH(value);
703: break;
704: }
705: case OP_IS:
706: {
707: Value *b=POP(); Value *a=POP();
708: Value *value=NEW VBool(pool(), b->as_string() == a->type());
1.49 paf 709: PUSH(value);
1.28 paf 710: break;
711: }
712:
1.11 paf 713: default:
1.67 paf 714: THROW(0,0,
715: 0,
1.139 paf 716: "invalid opcode %d", op.code);
1.11 paf 717: }
718: }
1.1 paf 719: }
1.17 paf 720:
721: Value *Request::get_element() {
1.82 paf 722: const String& name=POP_NAME();
1.24 paf 723: Value *ncontext=POP();
1.181 parser 724: Value *value=ncontext->get_element(name);
725: if(!value)
726: if(Method* method=OP.get_method(name)) { // maybe operator?
727: // as if that method were in self and we have normal dynamic method here
728: Junction& junction=*NEW Junction(pool(),
729: *self, self->get_class(), method, 0,0,0,0);
730: value=NEW VJunction(junction);
731: }
1.76 paf 732: if(value)
1.92 paf 733: value=&process(*value, &name); // process possible code-junction
1.76 paf 734: else {
1.167 parser 735: value=NEW VVoid(pool());
1.76 paf 736: value->set_name(name);
737: }
1.63 paf 738:
1.17 paf 739: return value;
1.34 paf 740: }
1.70 paf 741:
1.162 parser 742: /** @param intercept_string
1.116 paf 743: - true:
744: they want result=string value,
745: possible object result goes to wcontext
746: - false:
747: they want any result[string|object]
748: nothing goes to wcontext.
1.125 paf 749: used in @c (expression) params evaluation
1.116 paf 750: */
1.92 paf 751: Value& Request::process(Value& value, const String *name, bool intercept_string) {
1.91 paf 752: Value *result;
1.70 paf 753: Junction *junction=value.get_junction();
754: if(junction && junction->code) { // is it a code-junction?
1.92 paf 755: // process it
1.157 parser 756: #ifdef DEBUG_EXECUTE
1.158 parser 757: debug_printf(pool(), "ja->\n");
1.157 parser 758: #endif
1.70 paf 759: PUSH(self);
760: PUSH(root);
761: PUSH(rcontext);
1.129 paf 762: PUSH(wcontext);
1.70 paf 763:
1.71 paf 764: WContext *frame;
1.109 paf 765: // for expression method params
766: // wcontext is set 0
767: // using the fact in decision "which wwrapper to use"
768: bool using_code_frame=intercept_string && junction->wcontext;
769: if(using_code_frame) {
1.71 paf 770: // almost plain wwrapper about junction wcontext,
771: // BUT intercepts string writes
772: frame=NEW VCodeFrame(pool(), *junction->wcontext);
773: } else {
774: // plain wwrapper
1.108 paf 775: frame=NEW WWrapper(pool(), 0/*empty*/, false/*not constructing*/);
1.71 paf 776: }
777:
1.183 parser 778: //frame->set_name(value.name());
1.71 paf 779: wcontext=frame;
1.70 paf 780: self=&junction->self;
781: root=junction->root;
782: rcontext=junction->rcontext;
783: execute(*junction->code);
1.109 paf 784: if(using_code_frame) {
1.71 paf 785: // CodeFrame soul:
786: // string writes were intercepted
787: // returning them as the result of getting code-junction
788: result=NEW VString(*frame->get_string());
789: } else
790: result=frame->result();
1.70 paf 791:
792: wcontext=static_cast<WContext *>(POP());
793: rcontext=POP();
794: root=POP();
795: self=static_cast<VAliased *>(POP());
796:
1.157 parser 797: #ifdef DEBUG_EXECUTE
1.158 parser 798: debug_printf(pool(), "<-ja returned");
1.157 parser 799: #endif
1.70 paf 800: } else
1.91 paf 801: result=&value;
802:
803: if(name)
804: result->set_name(*name);
805: return *result;
1.85 paf 806: }
807:
1.176 parser 808: const String *Request::execute_method(Value& aself, const Method& method,
809: bool return_cstr) {
1.99 paf 810: PUSH(self);
811: PUSH(root);
812: PUSH(rcontext);
813: PUSH(wcontext);
814:
815: // initialize contexts
816: root=rcontext=self=&aself;
1.138 paf 817: wcontext=NEW WWrapper(pool(), &aself, false /*not constructing*/);
1.99 paf 818:
819: // execute!
820: execute(*method.parser_code);
821:
822: // result
1.114 paf 823: const String *result;
1.99 paf 824: if(return_cstr)
1.114 paf 825: result=&wcontext->as_string();
1.99 paf 826: else
827: result=0; // ignore result
828:
829: wcontext=static_cast<WContext *>(POP());
830: rcontext=POP();
831: root=POP();
832: self=static_cast<VAliased *>(POP());
833:
834: // return
835: return result;
836: }
837:
1.176 parser 838: const String *Request::execute_virtual_method(Value& aself,
839: const String& method_name,
840: bool return_cstr) {
1.99 paf 841: if(Value *value=aself.get_element(method_name))
842: if(Junction *junction=value->get_junction())
843: if(const Method *method=junction->method)
844: return execute_method(aself, *method, return_cstr);
1.176 parser 845:
846: return 0;
847: }
848:
1.178 parser 849: const String *Request::execute_nonvirtual_method(VStateless_class& aclass,
1.176 parser 850: const String& method_name,
851: bool return_cstr) {
1.178 parser 852: if(const Method *method=aclass.get_method(method_name))
1.179 parser 853: return execute_method(aclass, *method, return_cstr);
1.99 paf 854:
1.85 paf 855: return 0;
1.70 paf 856: }