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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)
1.203 ! paf 5: Author: Alexander Petrosyan <paf@design.ru> (http://paf.design.ru)
1.118 paf 6:
1.203 ! paf 7: $Id: execute.C,v 1.202 2001/11/01 16:27:20 paf Exp $
1.1 paf 8: */
9:
1.152 paf 10: #include "pa_opcode.h"
1.8 paf 11: #include "pa_array.h"
1.11 paf 12: #include "pa_request.h"
1.15 paf 13: #include "pa_vstring.h"
1.22 paf 14: #include "pa_vhash.h"
1.167 parser 15: #include "pa_vvoid.h"
1.145 paf 16: #include "pa_vcode_frame.h"
17: #include "pa_vmethod_frame.h"
1.38 paf 18: #include "pa_vobject.h"
1.49 paf 19: #include "pa_vdouble.h"
1.54 paf 20: #include "pa_vbool.h"
1.94 paf 21: #include "pa_vtable.h"
1.132 paf 22: #include "pa_vfile.h"
1.144 paf 23: #include "pa_vimage.h"
1.194 parser 24: #include "pa_wwrapper.h"
1.1 paf 25:
1.195 parser 26: //#define DEBUG_EXECUTE
1.157 parser 27:
1.198 parser 28: const uint ANTI_ENDLESS_EXECUTE_RECOURSION=200;
1.24 paf 29:
1.157 parser 30: #ifdef DEBUG_EXECUTE
1.1 paf 31: char *opcode_name[]={
1.49 paf 32: // literals
1.109 paf 33: "VALUE", "CURLY_CODE__STORE_PARAM", "EXPR_CODE__STORE_PARAM",
1.49 paf 34:
35: // actions
1.187 parser 36: "WITH_ROOT", "WITH_SELF", "WITH_READ", "WITH_WRITE",
1.66 paf 37: "GET_CLASS",
1.182 parser 38: "CONSTRUCT_VALUE", "CONSTRUCT_EXPR", "CURLY_CODE__CONSTRUCT",
1.108 paf 39: "WRITE_VALUE", "WRITE_EXPR_RESULT", "STRING__WRITE",
1.18 paf 40: "GET_ELEMENT", "GET_ELEMENT__WRITE",
1.1 paf 41: "CREATE_EWPOOL", "REDUCE_EWPOOL",
1.49 paf 42: "CREATE_SWPOOL", "REDUCE_SWPOOL",
1.1 paf 43: "GET_METHOD_FRAME",
44: "STORE_PARAM",
1.186 parser 45: "PREPARE_TO_CONSTRUCT_OBJECT", "CALL",
1.49 paf 46:
47: // expression ops: unary
1.148 paf 48: "NEG", "INV", "NOT", "DEF", "IN", "FEXISTS", "DEXISTS",
1.49 paf 49: // expression ops: binary
1.201 paf 50: "SUB", "ADD", "MUL", "DIV", "MOD", "INTDIV",
1.56 paf 51: "BIN_AND", "BIN_OR", "BIN_XOR",
52: "LOG_AND", "LOG_OR", "LOG_XOR",
1.49 paf 53: "NUM_LT", "NUM_GT", "NUM_LE", "NUM_GE", "NUM_EQ", "NUM_NE",
1.103 paf 54: "STR_LT", "STR_GT", "STR_LE", "STR_GE", "STR_EQ", "STR_NE",
55: "IS"
1.1 paf 56: };
57:
1.158 parser 58: void va_debug_printf(Pool& pool, const char *fmt,va_list args) {
1.127 paf 59: char buf[MAX_STRING];
60: vsnprintf(buf, MAX_STRING, fmt, args);
61: SAPI::log(pool, "%s", buf);
1.107 paf 62: }
63:
1.158 parser 64: void debug_printf(Pool& pool, const char *fmt, ...) {
1.107 paf 65: va_list args;
66: va_start(args,fmt);
1.158 parser 67: va_debug_printf(pool,fmt,args);
1.107 paf 68: va_end(args);
1.105 paf 69: }
70:
1.158 parser 71: void debug_dump(Pool& pool, int level, const Array& ops) {
1.190 parser 72: Array_iter i(ops);
73: while(i.has_next()) {
1.23 paf 74: Operation op;
1.190 parser 75: op.cast=i.next();
1.1 paf 76:
1.86 paf 77: if(op.code==OP_VALUE || op.code==OP_STRING__WRITE) {
1.190 parser 78: Value *value=static_cast<Value *>(i.next());
1.158 parser 79: debug_printf(pool,
1.133 paf 80: "%*s%s"
81: " \"%s\" %s",
82: level*4, "", opcode_name[op.code],
83: value->get_string()->cstr(), value->type());
84: continue;
1.15 paf 85: }
1.158 parser 86: debug_printf(pool, "%*s%s", level*4, "", opcode_name[op.code]);
1.1 paf 87:
1.184 parser 88: switch(op.code) {
89: case OP_CURLY_CODE__STORE_PARAM:
90: case OP_EXPR_CODE__STORE_PARAM:
91: case OP_CURLY_CODE__CONSTRUCT:
1.190 parser 92: const Array *local_ops=reinterpret_cast<const Array *>(i.next());
1.158 parser 93: debug_dump(pool, level+1, *local_ops);
1.1 paf 94: }
95: }
96: }
1.157 parser 97: #endif
1.1 paf 98:
1.159 parser 99: #define PUSH(value) stack.push(value)
100: #define POP() static_cast<Value *>(stack.pop())
101: #define POP_NAME() static_cast<Value *>(stack.pop())->as_string()
102:
1.32 paf 103: void Request::execute(const Array& ops) {
1.197 parser 104: // _asm int 3;
1.157 parser 105: #ifdef DEBUG_EXECUTE
1.158 parser 106: debug_printf(pool(), "source----------------------------\n");
107: debug_dump(pool(), 0, ops);
108: debug_printf(pool(), "execution-------------------------\n");
1.157 parser 109: #endif
1.12 paf 110:
1.190 parser 111: Array_iter i(ops);
112: while(i.has_next()) {
1.23 paf 113: Operation op;
1.190 parser 114: op.cast=i.next();
1.157 parser 115: #ifdef DEBUG_EXECUTE
1.158 parser 116: debug_printf(pool(), "%d:%s", stack.top_index()+1, opcode_name[op.code]);
1.157 parser 117: #endif
1.11 paf 118:
1.197 parser 119: Value *value;
120: Value *a; Value *b;
1.23 paf 121: switch(op.code) {
1.51 paf 122: // param in next instruction
1.52 paf 123: case OP_VALUE:
1.32 paf 124: {
1.197 parser 125: value=static_cast<Value *>(i.next());
1.157 parser 126: #ifdef DEBUG_EXECUTE
1.158 parser 127: debug_printf(pool(), " \"%s\" %s", value->get_string()->cstr(), value->type());
1.157 parser 128: #endif
1.52 paf 129: PUSH(value);
1.32 paf 130: break;
131: }
1.109 paf 132: case OP_CURLY_CODE__STORE_PARAM:
133: case OP_EXPR_CODE__STORE_PARAM:
1.32 paf 134: {
1.73 paf 135: VMethodFrame *frame=static_cast<VMethodFrame *>(stack.top_value());
1.65 paf 136: // code
1.190 parser 137: const Array *local_ops=reinterpret_cast<const Array *>(i.next());
1.157 parser 138: #ifdef DEBUG_EXECUTE
1.158 parser 139: debug_printf(pool(), " (%d)\n", local_ops->size());
140: debug_dump(pool(), 1, *local_ops);
1.157 parser 141: #endif
1.109 paf 142: // when they evaluate expression parameter,
143: // the object expression result
144: // does not need to be written into calling frame
145: // it must go into any expressions using that parameter
1.146 paf 146: // hence, we zero junction.wcontext here, and later
147: // in .process we would test that field
1.109 paf 148: // in decision "which wwrapper to use"
1.32 paf 149: Junction& j=*NEW Junction(pool(),
1.45 paf 150: *self, 0, 0,
1.130 paf 151: root,
1.149 paf 152: rcontext,
153: op.code==OP_EXPR_CODE__STORE_PARAM?0:wcontext,
1.130 paf 154: local_ops);
1.32 paf 155:
1.197 parser 156: value=NEW VJunction(j);
1.65 paf 157:
158: // store param
1.92 paf 159: frame->store_param(frame->name(), value);
1.32 paf 160: break;
161: }
1.66 paf 162: case OP_GET_CLASS:
1.38 paf 163: {
1.130 paf 164: // maybe they do ^class:method[] call, remember the fact
1.98 paf 165: wcontext->set_somebody_entered_some_class();
166:
1.82 paf 167: const String& name=POP_NAME();
1.197 parser 168: value=static_cast<Value *>(classes().get(name));
1.120 paf 169: if(!value)
1.196 parser 170: throw Exception(0,0,
1.66 paf 171: &name,
1.143 paf 172: "class is undefined");
1.66 paf 173:
1.120 paf 174: PUSH(value);
1.38 paf 175: break;
176: }
1.32 paf 177:
1.51 paf 178: // OP_WITH
1.187 parser 179: case OP_WITH_ROOT:
180: {
181: PUSH(root);
182: break;
183: }
1.37 paf 184: case OP_WITH_SELF:
185: {
186: PUSH(self);
187: break;
188: }
1.15 paf 189: case OP_WITH_READ:
190: {
1.24 paf 191: PUSH(rcontext);
1.20 paf 192: break;
193: }
1.37 paf 194: case OP_WITH_WRITE:
1.20 paf 195: {
1.37 paf 196: PUSH(wcontext);
1.20 paf 197: break;
198: }
1.37 paf 199:
1.51 paf 200: // OTHER ACTIONS BUT WITHs
1.80 paf 201: case OP_CONSTRUCT_VALUE:
1.20 paf 202: {
1.197 parser 203: value=POP();
1.82 paf 204: const String& name=POP_NAME();
1.37 paf 205: Value *ncontext=POP();
1.81 paf 206: ncontext->put_element(name, value);
1.37 paf 207: value->set_name(name);
1.15 paf 208: break;
209: }
1.80 paf 210: case OP_CONSTRUCT_EXPR:
211: {
1.197 parser 212: value=POP();
1.82 paf 213: const String& name=POP_NAME();
1.80 paf 214: Value *ncontext=POP();
1.128 paf 215: ncontext->put_element(name, value->as_expr_result());
1.80 paf 216: value->set_name(name);
217: break;
218: }
1.182 parser 219: case OP_CURLY_CODE__CONSTRUCT:
220: {
1.190 parser 221: const Array *local_ops=reinterpret_cast<const Array *>(i.next());
1.182 parser 222: #ifdef DEBUG_EXECUTE
223: debug_printf(pool(), " (%d)\n", local_ops->size());
224: debug_dump(pool(), 1, *local_ops);
225: #endif
226: Junction& j=*NEW Junction(pool(),
227: *self, 0, 0,
228: root,
229: rcontext,
230: wcontext,
231: local_ops);
232:
1.197 parser 233: value=NEW VJunction(j);
1.182 parser 234: const String& name=POP_NAME();
235: Value *ncontext=POP();
236: ncontext->put_element(name, value);
237: value->set_name(name);
238: break;
239: }
1.108 paf 240: case OP_WRITE_VALUE:
1.13 paf 241: {
1.197 parser 242: value=POP();
1.92 paf 243: write_assign_lang(*value);
1.150 paf 244:
245: // forget the fact they've entered some ^object.method[].
246: // see OP_GET_ELEMENT
1.200 paf 247: wcontext->set_somebody_entered_some_object(false);
1.86 paf 248: break;
249: }
1.108 paf 250: case OP_WRITE_EXPR_RESULT:
251: {
1.197 parser 252: value=POP();
1.128 paf 253: write_expr_result(*value->as_expr_result());
1.108 paf 254: break;
255: }
1.86 paf 256: case OP_STRING__WRITE:
257: {
1.190 parser 258: VString *vstring=static_cast<VString *>(i.next());
1.157 parser 259: #ifdef DEBUG_EXECUTE
1.158 parser 260: debug_printf(pool(), " \"%s\"", vstring->string().cstr());
1.157 parser 261: #endif
1.122 paf 262: write_no_lang(vstring->string());
1.13 paf 263: break;
1.14 paf 264: }
1.13 paf 265:
1.15 paf 266: case OP_GET_ELEMENT:
1.11 paf 267: {
1.150 paf 268: // maybe they do ^object.method[] call, remember the fact
1.200 paf 269: wcontext->set_somebody_entered_some_object(true);
1.150 paf 270:
1.174 parser 271: //_asm int 3;
1.197 parser 272: value=get_element();
1.24 paf 273: PUSH(value);
1.17 paf 274: break;
275: }
276:
1.18 paf 277: case OP_GET_ELEMENT__WRITE:
1.17 paf 278: {
1.197 parser 279: value=get_element();
1.92 paf 280: write_assign_lang(*value);
1.17 paf 281: break;
282: }
283:
1.32 paf 284:
1.17 paf 285: case OP_CREATE_EWPOOL:
286: {
1.24 paf 287: PUSH(wcontext);
1.137 paf 288: PUSH((void *)flang);
289: flang=String::UL_PASS_APPENDED;
1.186 parser 290: wcontext=NEW WWrapper(pool(), 0 /*empty*/);
1.17 paf 291: break;
292: }
293: case OP_REDUCE_EWPOOL:
294: {
1.197 parser 295: value=wcontext->result();
1.137 paf 296: flang=static_cast<String::Untaint_lang>(reinterpret_cast<int>(POP()));
1.25 paf 297: wcontext=static_cast<WContext *>(POP());
1.24 paf 298: PUSH(value);
1.13 paf 299: break;
1.15 paf 300: }
1.13 paf 301:
1.49 paf 302: case OP_CREATE_SWPOOL:
303: {
304: PUSH(wcontext);
1.186 parser 305: wcontext=NEW WWrapper(pool(), 0 /*empty*/);
1.49 paf 306: break;
307: }
308: case OP_REDUCE_SWPOOL:
309: {
310: // from "$a $b" part of expression taking only string value,
311: // ignoring any other content of wcontext
1.82 paf 312: const String *string=wcontext->get_string();
1.80 paf 313: Value *value;
314: if(string)
315: value=NEW VString(*string);
316: else
1.167 parser 317: NEW VVoid(pool());
1.50 paf 318: wcontext=static_cast<WContext *>(POP());
1.49 paf 319: PUSH(value);
320: break;
321: }
322:
1.51 paf 323: // CALL
1.28 paf 324: case OP_GET_METHOD_FRAME:
325: {
1.197 parser 326: value=POP();
1.138 paf 327:
1.111 paf 328: // info:
329: // code compiled so that this one's always method-junction,
330: // not a code-junction
1.32 paf 331: Junction *junction=value->get_junction();
1.31 paf 332: if(!junction)
1.196 parser 333: throw Exception(0, 0,
1.42 paf 334: &value->name(),
1.111 paf 335: "(%s) not a method or junction, can not call it",
1.38 paf 336: value->type());
1.70 paf 337:
1.185 parser 338: VMethodFrame *frame=NEW VMethodFrame(pool(), value->name(), *junction);
1.28 paf 339: PUSH(frame);
340: break;
341: }
342: case OP_STORE_PARAM:
343: {
1.197 parser 344: value=POP();
1.73 paf 345: VMethodFrame *frame=static_cast<VMethodFrame *>(stack.top_value());
1.92 paf 346: frame->store_param(frame->name(), value);
1.29 paf 347: break;
348: }
349:
1.186 parser 350: case OP_PREPARE_TO_CONSTRUCT_OBJECT:
351: {
1.200 paf 352: wcontext->set_constructing(true);
1.186 parser 353: break;
354: }
355: case OP_CALL:
1.29 paf 356: {
1.157 parser 357: #ifdef DEBUG_EXECUTE
1.158 parser 358: debug_printf(pool(), "->\n");
1.157 parser 359: #endif
1.34 paf 360: VMethodFrame *frame=static_cast<VMethodFrame *>(POP());
361: frame->fill_unspecified_params();
1.45 paf 362: PUSH(self);
363: PUSH(root);
364: PUSH(rcontext);
365: PUSH(wcontext);
366:
1.100 paf 367: VStateless_class *called_class=frame->junction.self.get_class();
1.200 paf 368: if(wcontext->get_constructing()) {
369: wcontext->set_constructing(false);
1.185 parser 370: if(frame->junction.method->call_type!=Method::CT_STATIC) {
1.138 paf 371: // this is a constructor call
1.185 parser 372:
373: if(Value *value=called_class->create_new_value(pool())) {
374: // some stateless_object creatable derivates
1.149 paf 375: self=value;
1.185 parser 376: } else {
377: // stateful object
1.94 paf 378: self=NEW VObject(pool(), *called_class);
1.185 parser 379: }
1.83 paf 380: frame->write(*self,
1.136 paf 381: String::UL_CLEAN // not used, always an object, not string
1.83 paf 382: );
1.185 parser 383: } else
1.196 parser 384: throw Exception(0, 0,
1.185 parser 385: &frame->name(),
386: "method is static and can not be used as constructor");
387: } else {
388: // this is not constructor call
389:
390: // not ^name.method call, name:method call; and
391: // is context object or class & is it my class or my parent's class and?
392: VStateless_class *read_class=rcontext->get_class();
393: if(
1.200 paf 394: !(wcontext->get_somebody_entered_some_object() &&
395: !wcontext->get_somebody_entered_some_class()) &&
1.185 parser 396: read_class && read_class->is_or_derived_from(*called_class)) // yes
397: self=rcontext; // dynamic call
398: else // no, not me or relative of mine (=total stranger)
399: self=&frame->junction.self; // static call
400: }
1.75 paf 401:
1.45 paf 402: frame->set_self(*self);
1.202 paf 403: rcontext=wcontext=frame;
1.47 paf 404: {
1.48 paf 405: // take object or class from any wrappers
1.102 paf 406: // and substitute class alias to the class they are called AS
407: Temp_alias temp_alias(*self->get_aliased(), *frame->junction.vclass);
1.68 paf 408:
1.99 paf 409: const Method& method=*frame->junction.method;
1.134 paf 410: Method::Call_type call_type=
411: called_class==self ? Method::CT_STATIC : Method::CT_DYNAMIC;
412: if(
413: method.call_type==Method::CT_ANY ||
1.197 parser 414: method.call_type==call_type) { // allowed call type?
415: try {
416: if(method.native_code) { // native code?
1.202 paf 417: // root unchanged, so that ^for ^foreach & co may write to locals
1.197 parser 418: method.check_actual_numbered_params(
419: frame->junction.self,
420: frame->name(), frame->numbered_params());
421: method.native_code(
422: *this,
423: frame->name(), frame->numbered_params()); // execute it
424: } else { // parser code
1.202 paf 425: root=frame;
1.197 parser 426: if(++anti_endless_execute_recoursion==ANTI_ENDLESS_EXECUTE_RECOURSION) {
427: anti_endless_execute_recoursion=0; // give @exception a chance
428: throw Exception(0, 0,
429: &frame->name(),
430: "endless recursion detected");
431: }
432:
433: execute(*method.parser_code); // execute it
434: anti_endless_execute_recoursion--;
1.159 parser 435: }
1.197 parser 436: } catch(...) {
437: // record it to stack trace
438: trace.push((void *)&frame->name());
439: /*re*/throw;
1.159 parser 440: }
1.197 parser 441: } else
1.196 parser 442: throw Exception(0, 0,
1.134 paf 443: &frame->name(),
444: "is not allowed to be called %s",
445: call_type==Method::CT_STATIC?"statically":"dynamically");
446:
1.47 paf 447: }
1.197 parser 448: 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();
1.197 parser 466: 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();
1.197 parser 473: 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();
1.197 parser 480: 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();
1.197 parser 487: value=NEW VBool(pool(), operand->is_defined());
1.62 paf 488: PUSH(value);
489: break;
490: }
491: case OP_IN:
492: {
1.199 paf 493: /// @test String::cmp
1.62 paf 494: Value *operand=POP();
1.110 paf 495: const char *path=operand->as_string().cstr();
1.197 parser 496: value=NEW VBool(pool(),
1.151 paf 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();
1.197 parser 504: value=NEW VBool(pool(),
1.127 paf 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();
1.197 parser 512: value=NEW VBool(pool(),
1.148 paf 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: {
1.197 parser 521: b=POP(); a=POP();
522: 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: {
1.197 parser 528: b=POP(); a=POP();
529: 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: {
1.197 parser 535: b=POP(); a=POP();
536: value=NEW VDouble(pool(), a->as_double() * b->as_double());
1.53 paf 537: PUSH(value);
538: break;
539: }
540: case OP_DIV:
541: {
1.197 parser 542: b=POP(); 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
1.196 parser 553: throw Exception(0, 0,
1.171 parser 554: problem_source,
1.170 parser 555: "Division by zero");
1.171 parser 556: }
1.170 parser 557:
1.197 parser 558: 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: {
1.197 parser 564: b=POP(); 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
1.196 parser 575: throw Exception(0, 0,
1.171 parser 576: problem_source,
1.170 parser 577: "Modulus by zero");
1.171 parser 578: }
1.170 parser 579:
1.197 parser 580: value=NEW VDouble(pool(), fmod(a_double, b_double));
1.201 paf 581: PUSH(value);
582: break;
583: }
584: case OP_INTDIV:
585: {
586: b=POP(); a=POP();
587:
588: int a_int=a->as_int();
589: int b_int=b->as_int();
590:
591: if(b_int == 0) {
592: const String *problem_source=&b->as_string();
593: #ifndef NO_STRING_ORIGIN
594: if(!problem_source->origin().file)
595: problem_source=&b->name();
596: #endif
597: throw Exception(0, 0,
598: problem_source,
599: "Division by zero");
600: }
601:
602: value=NEW VInt(pool(), a_int / b_int);
1.55 paf 603: PUSH(value);
604: break;
605: }
606: case OP_BIN_AND:
1.54 paf 607: {
1.197 parser 608: b=POP(); a=POP();
609: value=NEW VDouble(pool(),
1.155 parser 610: a->as_int() &
611: b->as_int());
1.54 paf 612: PUSH(value);
613: break;
614: }
1.55 paf 615: case OP_BIN_OR:
1.54 paf 616: {
1.197 parser 617: b=POP(); a=POP();
618: value=NEW VDouble(pool(),
1.155 parser 619: a->as_int() |
620: b->as_int());
1.55 paf 621: PUSH(value);
622: break;
623: }
1.56 paf 624: case OP_BIN_XOR:
625: {
1.197 parser 626: b=POP(); a=POP();
627: value=NEW VDouble(pool(),
1.155 parser 628: a->as_int() ^
629: b->as_int());
1.56 paf 630: PUSH(value);
631: break;
632: }
1.55 paf 633: case OP_LOG_AND:
634: {
1.197 parser 635: b=POP(); a=POP();
636: value=NEW VBool(pool(), a->as_bool() && b->as_bool());
1.55 paf 637: PUSH(value);
638: break;
639: }
640: case OP_LOG_OR:
641: {
1.197 parser 642: b=POP(); a=POP();
643: value=NEW VBool(pool(), a->as_bool() || b->as_bool());
1.56 paf 644: PUSH(value);
645: break;
646: }
647: case OP_LOG_XOR:
648: {
1.197 parser 649: b=POP(); a=POP();
650: value=NEW VBool(pool(), a->as_bool() ^ b->as_bool());
1.55 paf 651: PUSH(value);
652: break;
653: }
654: case OP_NUM_LT:
655: {
1.197 parser 656: b=POP(); a=POP();
657: value=NEW VBool(pool(), a->as_double() < b->as_double());
1.55 paf 658: PUSH(value);
659: break;
660: }
661: case OP_NUM_GT:
662: {
1.197 parser 663: b=POP(); a=POP();
664: value=NEW VBool(pool(), a->as_double() > b->as_double());
1.55 paf 665: PUSH(value);
666: break;
667: }
668: case OP_NUM_LE:
669: {
1.197 parser 670: b=POP(); a=POP();
671: value=NEW VBool(pool(), a->as_double() <= b->as_double());
1.55 paf 672: PUSH(value);
673: break;
674: }
675: case OP_NUM_GE:
676: {
1.197 parser 677: b=POP(); a=POP();
678: value=NEW VBool(pool(), a->as_double() >= b->as_double());
1.55 paf 679: PUSH(value);
680: break;
681: }
682: case OP_NUM_EQ:
683: {
1.197 parser 684: b=POP(); a=POP();
685: value=NEW VBool(pool(), a->as_double() == b->as_double());
1.55 paf 686: PUSH(value);
687: break;
688: }
689: case OP_NUM_NE:
690: {
1.197 parser 691: b=POP(); a=POP();
692: value=NEW VBool(pool(), a->as_double() != b->as_double());
1.54 paf 693: PUSH(value);
694: break;
695: }
1.58 paf 696: case OP_STR_LT:
697: {
1.197 parser 698: b=POP(); a=POP();
699: value=NEW VBool(pool(), a->as_string() < b->as_string());
1.58 paf 700: PUSH(value);
701: break;
702: }
703: case OP_STR_GT:
704: {
1.197 parser 705: b=POP(); a=POP();
706: value=NEW VBool(pool(), a->as_string() > b->as_string());
1.58 paf 707: PUSH(value);
708: break;
709: }
1.55 paf 710: case OP_STR_LE:
1.58 paf 711: {
1.197 parser 712: b=POP(); a=POP();
713: value=NEW VBool(pool(), a->as_string() <= b->as_string());
1.58 paf 714: PUSH(value);
715: break;
716: }
1.55 paf 717: case OP_STR_GE:
1.54 paf 718: {
1.197 parser 719: b=POP(); a=POP();
720: value=NEW VBool(pool(), a->as_string() >= b->as_string());
1.58 paf 721: PUSH(value);
722: break;
723: }
724: case OP_STR_EQ:
725: {
1.197 parser 726: b=POP(); a=POP();
727: value=NEW VBool(pool(), a->as_string() == b->as_string());
1.58 paf 728: PUSH(value);
729: break;
730: }
731: case OP_STR_NE:
732: {
1.197 parser 733: b=POP(); a=POP();
734: value=NEW VBool(pool(), a->as_string() != b->as_string());
1.103 paf 735: PUSH(value);
736: break;
737: }
738: case OP_IS:
739: {
1.191 parser 740: //_asm int 3;
1.197 parser 741: b=POP(); a=POP();
742: value=NEW VBool(pool(), b->as_string() == a->type());
1.49 paf 743: PUSH(value);
1.28 paf 744: break;
745: }
746:
1.11 paf 747: default:
1.196 parser 748: throw Exception(0,0,
1.67 paf 749: 0,
1.139 paf 750: "invalid opcode %d", op.code);
1.11 paf 751: }
752: }
1.1 paf 753: }
1.17 paf 754:
755: Value *Request::get_element() {
1.82 paf 756: const String& name=POP_NAME();
1.24 paf 757: Value *ncontext=POP();
1.181 parser 758: Value *value=ncontext->get_element(name);
759: if(!value)
760: if(Method* method=OP.get_method(name)) { // maybe operator?
761: // as if that method were in self and we have normal dynamic method here
762: Junction& junction=*NEW Junction(pool(),
1.202 paf 763: *root, self->get_class(), method, 0,0,0,0);
1.181 parser 764: value=NEW VJunction(junction);
765: }
1.76 paf 766: if(value)
1.92 paf 767: value=&process(*value, &name); // process possible code-junction
1.76 paf 768: else {
1.167 parser 769: value=NEW VVoid(pool());
1.76 paf 770: value->set_name(name);
771: }
1.63 paf 772:
1.17 paf 773: return value;
1.34 paf 774: }
1.70 paf 775:
1.162 parser 776: /** @param intercept_string
1.116 paf 777: - true:
778: they want result=string value,
779: possible object result goes to wcontext
780: - false:
781: they want any result[string|object]
782: nothing goes to wcontext.
1.125 paf 783: used in @c (expression) params evaluation
1.116 paf 784: */
1.92 paf 785: Value& Request::process(Value& value, const String *name, bool intercept_string) {
1.91 paf 786: Value *result;
1.70 paf 787: Junction *junction=value.get_junction();
788: if(junction && junction->code) { // is it a code-junction?
1.92 paf 789: // process it
1.157 parser 790: #ifdef DEBUG_EXECUTE
1.158 parser 791: debug_printf(pool(), "ja->\n");
1.157 parser 792: #endif
1.70 paf 793: PUSH(self);
794: PUSH(root);
795: PUSH(rcontext);
1.129 paf 796: PUSH(wcontext);
1.70 paf 797:
1.71 paf 798: WContext *frame;
1.109 paf 799: // for expression method params
800: // wcontext is set 0
801: // using the fact in decision "which wwrapper to use"
802: bool using_code_frame=intercept_string && junction->wcontext;
803: if(using_code_frame) {
1.71 paf 804: // almost plain wwrapper about junction wcontext,
805: // BUT intercepts string writes
806: frame=NEW VCodeFrame(pool(), *junction->wcontext);
807: } else {
808: // plain wwrapper
1.186 parser 809: frame=NEW WWrapper(pool(), 0/*empty*/);
1.71 paf 810: }
811:
1.183 parser 812: //frame->set_name(value.name());
1.71 paf 813: wcontext=frame;
1.70 paf 814: self=&junction->self;
815: root=junction->root;
816: rcontext=junction->rcontext;
817: execute(*junction->code);
1.109 paf 818: if(using_code_frame) {
1.71 paf 819: // CodeFrame soul:
820: // string writes were intercepted
821: // returning them as the result of getting code-junction
822: result=NEW VString(*frame->get_string());
823: } else
824: result=frame->result();
1.70 paf 825:
826: wcontext=static_cast<WContext *>(POP());
827: rcontext=POP();
828: root=POP();
829: self=static_cast<VAliased *>(POP());
830:
1.157 parser 831: #ifdef DEBUG_EXECUTE
1.158 parser 832: debug_printf(pool(), "<-ja returned");
1.157 parser 833: #endif
1.70 paf 834: } else
1.91 paf 835: result=&value;
836:
837: if(name)
838: result->set_name(*name);
839: return *result;
1.85 paf 840: }
841:
1.176 parser 842: const String *Request::execute_method(Value& aself, const Method& method,
843: bool return_cstr) {
1.99 paf 844: PUSH(self);
845: PUSH(root);
846: PUSH(rcontext);
847: PUSH(wcontext);
848:
849: // initialize contexts
850: root=rcontext=self=&aself;
1.186 parser 851: wcontext=NEW WWrapper(pool(), &aself);
1.99 paf 852:
853: // execute!
854: execute(*method.parser_code);
855:
856: // result
1.114 paf 857: const String *result;
1.99 paf 858: if(return_cstr)
1.114 paf 859: result=&wcontext->as_string();
1.99 paf 860: else
861: result=0; // ignore result
862:
863: wcontext=static_cast<WContext *>(POP());
864: rcontext=POP();
865: root=POP();
866: self=static_cast<VAliased *>(POP());
867:
868: // return
869: return result;
870: }
871:
1.176 parser 872: const String *Request::execute_virtual_method(Value& aself,
873: const String& method_name,
874: bool return_cstr) {
1.99 paf 875: if(Value *value=aself.get_element(method_name))
876: if(Junction *junction=value->get_junction())
877: if(const Method *method=junction->method)
878: return execute_method(aself, *method, return_cstr);
1.188 parser 879:
1.176 parser 880: return 0;
881: }
882:
1.178 parser 883: const String *Request::execute_nonvirtual_method(VStateless_class& aclass,
1.176 parser 884: const String& method_name,
885: bool return_cstr) {
1.178 parser 886: if(const Method *method=aclass.get_method(method_name))
1.179 parser 887: return execute_method(aclass, *method, return_cstr);
1.99 paf 888:
1.85 paf 889: return 0;
1.70 paf 890: }