![[BACK]](/cvsweb/icons/back.gif){kind=icon}
Return to execute.C CVS log ![[TXT]](/cvsweb/icons/text.gif){kind=icon}
![[DIR]](/cvsweb/icons/dir.gif){kind=icon}
Up to [parser3project] / parser3 / src / main|
Return to execute.C CVS log | Up to [parser3project] / parser3 / src / main |
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)
1.88 paf 7:
1.160 ! parser 8: $Id: execute.C,v 1.159 2001/05/17 15:20:15 parser Exp $
1.1 paf 9: */
10:
1.123 paf 11: #include "pa_config_includes.h"
1.152 paf 12: #include "pa_opcode.h"
1.8 paf 13: #include "pa_array.h"
1.11 paf 14: #include "pa_request.h"
1.15 paf 15: #include "pa_vstring.h"
1.22 paf 16: #include "pa_vhash.h"
1.23 paf 17: #include "pa_vunknown.h"
1.145 paf 18: #include "pa_vcode_frame.h"
19: #include "pa_vmethod_frame.h"
1.38 paf 20: #include "pa_vobject.h"
1.49 paf 21: #include "pa_vdouble.h"
1.54 paf 22: #include "pa_vbool.h"
1.94 paf 23: #include "pa_vtable.h"
1.132 paf 24: #include "pa_vfile.h"
1.144 paf 25: #include "pa_vimage.h"
1.1 paf 26:
1.157 parser 27: //#define DEBUG_EXECUTE
28:
1.159 parser 29: const uint ANTI_ENDLESS_EXECUTE_RECOURSION=500;
1.24 paf 30:
1.157 parser 31: #ifdef DEBUG_EXECUTE
1.1 paf 32: char *opcode_name[]={
1.49 paf 33: // literals
1.109 paf 34: "VALUE", "CURLY_CODE__STORE_PARAM", "EXPR_CODE__STORE_PARAM",
1.49 paf 35:
36: // actions
1.51 paf 37: "WITH_SELF", "WITH_ROOT", "WITH_READ", "WITH_WRITE",
1.66 paf 38: "GET_CLASS",
1.80 paf 39: "CONSTRUCT_VALUE", "CONSTRUCT_DOUBLE",
1.108 paf 40: "WRITE_VALUE", "WRITE_EXPR_RESULT", "STRING__WRITE",
1.18 paf 41: "GET_ELEMENT", "GET_ELEMENT__WRITE",
1.1 paf 42: "CREATE_EWPOOL", "REDUCE_EWPOOL",
43: "CREATE_RWPOOL", "REDUCE_RWPOOL",
1.49 paf 44: "CREATE_SWPOOL", "REDUCE_SWPOOL",
1.1 paf 45: "GET_METHOD_FRAME",
46: "STORE_PARAM",
1.51 paf 47: "CALL",
1.49 paf 48:
49: // expression ops: unary
1.148 paf 50: "NEG", "INV", "NOT", "DEF", "IN", "FEXISTS", "DEXISTS",
1.49 paf 51: // expression ops: binary
52: "SUB", "ADD", "MUL", "DIV", "MOD",
1.56 paf 53: "BIN_AND", "BIN_OR", "BIN_XOR",
54: "LOG_AND", "LOG_OR", "LOG_XOR",
1.49 paf 55: "NUM_LT", "NUM_GT", "NUM_LE", "NUM_GE", "NUM_EQ", "NUM_NE",
1.103 paf 56: "STR_LT", "STR_GT", "STR_LE", "STR_GE", "STR_EQ", "STR_NE",
57: "IS"
1.1 paf 58: };
59:
1.158 parser 60: void va_debug_printf(Pool& pool, const char *fmt,va_list args) {
1.127 paf 61: char buf[MAX_STRING];
62: vsnprintf(buf, MAX_STRING, fmt, args);
63: SAPI::log(pool, "%s", buf);
1.107 paf 64: }
65:
1.158 parser 66: void debug_printf(Pool& pool, const char *fmt, ...) {
1.107 paf 67: va_list args;
68: va_start(args,fmt);
1.158 parser 69: va_debug_printf(pool,fmt,args);
1.107 paf 70: va_end(args);
1.105 paf 71: }
72:
1.158 parser 73: void debug_dump(Pool& pool, int level, const Array& ops) {
1.157 parser 74: {
1.135 paf 75: int size=ops.quick_size();
1.158 parser 76: //debug_printf(pool, "size=%d\n", size);
1.23 paf 77: for(int i=0; i<size; i++) {
78: Operation op;
79: op.cast=ops.quick_get(i);
1.158 parser 80: debug_printf(pool, "%8X\n", op.cast);
1.23 paf 81: }
82: }
83:
1.135 paf 84: int size=ops.quick_size();
1.158 parser 85: //debug_printf(pool, "size=%d\n", size);
1.1 paf 86: for(int i=0; i<size; i++) {
1.23 paf 87: Operation op;
88: op.cast=ops.quick_get(i);
1.1 paf 89:
1.86 paf 90: if(op.code==OP_VALUE || op.code==OP_STRING__WRITE) {
1.52 paf 91: Value *value=static_cast<Value *>(ops.quick_get(++i));
1.158 parser 92: debug_printf(pool,
1.133 paf 93: "%*s%s"
94: " \"%s\" %s",
95: level*4, "", opcode_name[op.code],
96: value->get_string()->cstr(), value->type());
97: continue;
1.15 paf 98: }
1.158 parser 99: debug_printf(pool, "%*s%s", level*4, "", opcode_name[op.code]);
1.1 paf 100:
1.109 paf 101: if(op.code==OP_CURLY_CODE__STORE_PARAM || op.code==OP_EXPR_CODE__STORE_PARAM) {
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: }
1.108 paf 227: case OP_WRITE_VALUE:
1.13 paf 228: {
1.24 paf 229: Value *value=POP();
1.92 paf 230: write_assign_lang(*value);
1.150 paf 231:
232: // forget the fact they've entered some ^object.method[].
233: // see OP_GET_ELEMENT
234: wcontext->clear_somebody_entered_some_object();
1.86 paf 235: break;
236: }
1.108 paf 237: case OP_WRITE_EXPR_RESULT:
238: {
239: Value *value=POP();
1.128 paf 240: write_expr_result(*value->as_expr_result());
1.108 paf 241: break;
242: }
1.86 paf 243: case OP_STRING__WRITE:
244: {
245: VString *vstring=static_cast<VString *>(ops.quick_get(++i));
1.157 parser 246: #ifdef DEBUG_EXECUTE
1.158 parser 247: debug_printf(pool(), " \"%s\"", vstring->string().cstr());
1.157 parser 248: #endif
1.122 paf 249: write_no_lang(vstring->string());
1.13 paf 250: break;
1.14 paf 251: }
1.13 paf 252:
1.15 paf 253: case OP_GET_ELEMENT:
1.11 paf 254: {
1.150 paf 255: // maybe they do ^object.method[] call, remember the fact
256: wcontext->inc_somebody_entered_some_object();
257:
1.17 paf 258: Value *value=get_element();
1.24 paf 259: PUSH(value);
1.17 paf 260: break;
261: }
262:
1.18 paf 263: case OP_GET_ELEMENT__WRITE:
1.17 paf 264: {
265: Value *value=get_element();
1.92 paf 266: write_assign_lang(*value);
1.17 paf 267: break;
268: }
269:
1.32 paf 270:
1.17 paf 271: case OP_CREATE_EWPOOL:
272: {
1.24 paf 273: PUSH(wcontext);
1.137 paf 274: PUSH((void *)flang);
275: flang=String::UL_PASS_APPENDED;
1.138 paf 276: wcontext=NEW WWrapper(pool(), 0 /*empty*/, true /*constructing*/);
1.17 paf 277: break;
278: }
279: case OP_REDUCE_EWPOOL:
280: {
1.36 paf 281: Value *value=wcontext->result();
1.137 paf 282: flang=static_cast<String::Untaint_lang>(reinterpret_cast<int>(POP()));
1.25 paf 283: wcontext=static_cast<WContext *>(POP());
1.24 paf 284: PUSH(value);
1.13 paf 285: break;
1.15 paf 286: }
1.13 paf 287:
1.26 paf 288: case OP_CREATE_RWPOOL:
289: {
290: Value *ncontext=POP();
291: PUSH(rcontext);
1.146 paf 292: PUSH(wcontext);
1.26 paf 293: rcontext=ncontext;
1.138 paf 294: wcontext=NEW WWrapper(pool(), ncontext, false /*not constructing*/);
1.26 paf 295: break;
296: }
297: case OP_REDUCE_RWPOOL:
298: {
1.82 paf 299: const String *string=wcontext->get_string();
1.80 paf 300: Value *value;
301: if(string)
302: value=NEW VString(*string);
303: else
304: value=NEW VUnknown(pool());
1.26 paf 305: wcontext=static_cast<WContext *>(POP());
306: rcontext=POP();
307: PUSH(value);
308: break;
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
325: NEW VUnknown(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();
1.150 paf 377: // not ^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();
1.156 parser 380: if(!wcontext->somebody_entered_some_object() &&
1.150 paf 381: read_class && read_class->is_or_derived_from(*called_class)) // yes
1.74 paf 382: self=rcontext; // class dynamic call
1.75 paf 383: else // no, not me or relative of mine (total stranger)
1.153 paf 384: // were are constructing something and
1.156 parser 385: // our constructor is just method call and
386: // not static-only-method call
1.153 paf 387: if(frame->is_constructor &&
1.156 parser 388: wcontext->somebody_entered_some_object()==1 &&
389: frame->junction.method->call_type!=Method::CT_STATIC) {
1.138 paf 390: // this is a constructor call
1.149 paf 391: // some stateless_object creatable derivates
392: if(Value *value=called_class->create_new_value(pool()))
393: self=value;
1.121 paf 394: else // stateful object
1.94 paf 395: self=NEW VObject(pool(), *called_class);
1.83 paf 396: frame->write(*self,
1.136 paf 397: String::UL_CLEAN // not used, always an object, not string
1.83 paf 398: );
1.75 paf 399: } else
400: self=&frame->junction.self; // no, static or simple dynamic call
401:
1.45 paf 402: frame->set_self(*self);
1.29 paf 403: root=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 ||
414: method.call_type==call_type) // allowed call type?
415: if(method.native_code) { // native code?
1.154 paf 416: method.check_actual_numbered_params(pool(),
1.134 paf 417: frame->junction.self,
418: frame->name(), frame->numbered_params());
1.160 ! parser 419: method.native_code(
1.134 paf 420: *this,
421: frame->name(), frame->numbered_params()); // execute it
1.159 parser 422: } else { // parser code
423: if(++anti_endless_execute_recoursion==ANTI_ENDLESS_EXECUTE_RECOURSION) {
424: anti_endless_execute_recoursion=0; // give @exception a chance
425: THROW(0, 0,
1.160 ! parser 426: &frame->name(),
1.159 parser 427: "endless recursion detected");
428: }
429:
1.134 paf 430: execute(*method.parser_code); // execute it
1.159 parser 431: anti_endless_execute_recoursion--;
432: }
1.134 paf 433: else
434: THROW(0, 0,
435: &frame->name(),
436: "is not allowed to be called %s",
437: call_type==Method::CT_STATIC?"statically":"dynamically");
438:
1.47 paf 439: }
1.36 paf 440: Value *value=wcontext->result();
1.45 paf 441:
442: wcontext=static_cast<WContext *>(POP());
443: rcontext=POP();
444: root=POP();
445: self=static_cast<VAliased *>(POP());
1.62 paf 446:
1.61 paf 447: PUSH(value);
1.157 parser 448: #ifdef DEBUG_EXECUTE
1.158 parser 449: debug_printf(pool(), "<-returned");
1.157 parser 450: #endif
1.49 paf 451: break;
452: }
453:
1.55 paf 454: // expression ops: unary
455: case OP_NEG:
456: {
457: Value *operand=POP();
1.128 paf 458: Value *value=NEW VDouble(pool(), -operand->as_double());
1.55 paf 459: PUSH(value);
460: break;
461: }
462: case OP_INV:
463: {
464: Value *operand=POP();
1.155 parser 465: Value *value=NEW VDouble(pool(), ~operand->as_int());
1.55 paf 466: PUSH(value);
467: break;
468: }
469: case OP_NOT:
470: {
471: Value *operand=POP();
1.128 paf 472: Value *value=NEW VBool(pool(), !operand->as_bool());
1.55 paf 473: PUSH(value);
474: break;
475: }
1.62 paf 476: case OP_DEF:
477: {
478: Value *operand=POP();
1.128 paf 479: Value *value=NEW VBool(pool(), operand->is_defined());
1.62 paf 480: PUSH(value);
481: break;
482: }
483: case OP_IN:
484: {
485: Value *operand=POP();
1.110 paf 486: const char *path=operand->as_string().cstr();
1.151 paf 487: Value *value=NEW VBool(pool(),
488: info.uri && strncmp(path, info.uri, strlen(path))==0);
1.62 paf 489: PUSH(value);
490: break;
491: }
492: case OP_FEXISTS:
493: {
494: Value *operand=POP();
1.127 paf 495: Value *value=NEW VBool(pool(),
496: file_readable(absolute(operand->as_string())));
1.148 paf 497: PUSH(value);
498: break;
499: }
500: case OP_DEXISTS:
501: {
502: Value *operand=POP();
503: Value *value=NEW VBool(pool(),
504: dir_readable(absolute(operand->as_string())));
1.62 paf 505: PUSH(value);
506: break;
507: }
1.55 paf 508:
509: // expression ops: binary
510: case OP_SUB:
1.53 paf 511: {
1.61 paf 512: Value *b=POP(); Value *a=POP();
1.128 paf 513: Value *value=NEW VDouble(pool(), a->as_double() - b->as_double());
1.53 paf 514: PUSH(value);
515: break;
516: }
1.55 paf 517: case OP_ADD:
1.53 paf 518: {
1.61 paf 519: Value *b=POP(); Value *a=POP();
1.128 paf 520: Value *value=NEW VDouble(pool(), a->as_double() + b->as_double());
1.53 paf 521: PUSH(value);
522: break;
523: }
1.49 paf 524: case OP_MUL:
525: {
1.61 paf 526: Value *b=POP(); Value *a=POP();
1.128 paf 527: Value *value=NEW VDouble(pool(), a->as_double() * b->as_double());
1.53 paf 528: PUSH(value);
529: break;
530: }
531: case OP_DIV:
532: {
1.61 paf 533: Value *b=POP(); Value *a=POP();
1.128 paf 534: Value *value=NEW VDouble(pool(), a->as_double() / b->as_double());
1.54 paf 535: PUSH(value);
536: break;
537: }
1.55 paf 538: case OP_MOD:
539: {
1.61 paf 540: Value *b=POP(); Value *a=POP();
1.78 paf 541: Value *value=NEW VDouble(pool(),
1.155 parser 542: a->as_int() %
543: b->as_int());
1.55 paf 544: PUSH(value);
545: break;
546: }
547: case OP_BIN_AND:
1.54 paf 548: {
1.61 paf 549: Value *b=POP(); Value *a=POP();
1.78 paf 550: Value *value=NEW VDouble(pool(),
1.155 parser 551: a->as_int() &
552: b->as_int());
1.54 paf 553: PUSH(value);
554: break;
555: }
1.55 paf 556: case OP_BIN_OR:
1.54 paf 557: {
1.61 paf 558: Value *b=POP(); Value *a=POP();
1.78 paf 559: Value *value=NEW VDouble(pool(),
1.155 parser 560: a->as_int() |
561: b->as_int());
1.55 paf 562: PUSH(value);
563: break;
564: }
1.56 paf 565: case OP_BIN_XOR:
566: {
1.61 paf 567: Value *b=POP(); Value *a=POP();
1.78 paf 568: Value *value=NEW VDouble(pool(),
1.155 parser 569: a->as_int() ^
570: b->as_int());
1.56 paf 571: PUSH(value);
572: break;
573: }
1.55 paf 574: case OP_LOG_AND:
575: {
1.61 paf 576: Value *b=POP(); Value *a=POP();
1.128 paf 577: Value *value=NEW VBool(pool(), a->as_bool() && b->as_bool());
1.55 paf 578: PUSH(value);
579: break;
580: }
581: case OP_LOG_OR:
582: {
1.61 paf 583: Value *b=POP(); Value *a=POP();
1.128 paf 584: Value *value=NEW VBool(pool(), a->as_bool() || b->as_bool());
1.56 paf 585: PUSH(value);
586: break;
587: }
588: case OP_LOG_XOR:
589: {
1.61 paf 590: Value *b=POP(); Value *a=POP();
1.128 paf 591: Value *value=NEW VBool(pool(), a->as_bool() ^ b->as_bool());
1.55 paf 592: PUSH(value);
593: break;
594: }
595: case OP_NUM_LT:
596: {
1.61 paf 597: Value *b=POP(); Value *a=POP();
1.128 paf 598: Value *value=NEW VBool(pool(), a->as_double() < b->as_double());
1.55 paf 599: PUSH(value);
600: break;
601: }
602: case OP_NUM_GT:
603: {
1.61 paf 604: Value *b=POP(); Value *a=POP();
1.128 paf 605: Value *value=NEW VBool(pool(), a->as_double() > b->as_double());
1.55 paf 606: PUSH(value);
607: break;
608: }
609: case OP_NUM_LE:
610: {
1.61 paf 611: Value *b=POP(); Value *a=POP();
1.128 paf 612: Value *value=NEW VBool(pool(), a->as_double() <= b->as_double());
1.55 paf 613: PUSH(value);
614: break;
615: }
616: case OP_NUM_GE:
617: {
1.61 paf 618: Value *b=POP(); Value *a=POP();
1.128 paf 619: Value *value=NEW VBool(pool(), a->as_double() >= b->as_double());
1.55 paf 620: PUSH(value);
621: break;
622: }
623: case OP_NUM_EQ:
624: {
1.61 paf 625: Value *b=POP(); Value *a=POP();
1.128 paf 626: Value *value=NEW VBool(pool(), a->as_double() == b->as_double());
1.55 paf 627: PUSH(value);
628: break;
629: }
630: case OP_NUM_NE:
631: {
1.61 paf 632: Value *b=POP(); Value *a=POP();
1.128 paf 633: Value *value=NEW VBool(pool(), a->as_double() != b->as_double());
1.54 paf 634: PUSH(value);
635: break;
636: }
1.58 paf 637: case OP_STR_LT:
638: {
1.61 paf 639: Value *b=POP(); Value *a=POP();
1.78 paf 640: Value *value=NEW VBool(pool(), a->as_string() < b->as_string());
1.58 paf 641: PUSH(value);
642: break;
643: }
644: case OP_STR_GT:
645: {
1.61 paf 646: Value *b=POP(); Value *a=POP();
1.78 paf 647: Value *value=NEW VBool(pool(), a->as_string() > b->as_string());
1.58 paf 648: PUSH(value);
649: break;
650: }
1.55 paf 651: case OP_STR_LE:
1.58 paf 652: {
1.61 paf 653: Value *b=POP(); Value *a=POP();
1.78 paf 654: Value *value=NEW VBool(pool(), a->as_string() <= b->as_string());
1.58 paf 655: PUSH(value);
656: break;
657: }
1.55 paf 658: case OP_STR_GE:
1.54 paf 659: {
1.61 paf 660: Value *b=POP(); Value *a=POP();
1.78 paf 661: Value *value=NEW VBool(pool(), a->as_string() >= b->as_string());
1.58 paf 662: PUSH(value);
663: break;
664: }
665: case OP_STR_EQ:
666: {
1.61 paf 667: Value *b=POP(); Value *a=POP();
1.78 paf 668: Value *value=NEW VBool(pool(), a->as_string() == b->as_string());
1.58 paf 669: PUSH(value);
670: break;
671: }
672: case OP_STR_NE:
673: {
1.61 paf 674: Value *b=POP(); Value *a=POP();
1.78 paf 675: Value *value=NEW VBool(pool(), a->as_string() != b->as_string());
1.103 paf 676: PUSH(value);
677: break;
678: }
679: case OP_IS:
680: {
681: Value *b=POP(); Value *a=POP();
682: Value *value=NEW VBool(pool(), b->as_string() == a->type());
1.49 paf 683: PUSH(value);
1.28 paf 684: break;
685: }
686:
1.11 paf 687: default:
1.67 paf 688: THROW(0,0,
689: 0,
1.139 paf 690: "invalid opcode %d", op.code);
1.11 paf 691: }
692: }
1.1 paf 693: }
1.17 paf 694:
695: Value *Request::get_element() {
1.82 paf 696: const String& name=POP_NAME();
1.24 paf 697: Value *ncontext=POP();
1.147 paf 698: Value *value;
699: if(Method* method=OP.get_method(name)) { // operator?
700: // as if that method were in self and we have normal dynamic method here
701: Junction& junction=*NEW Junction(pool(),
702: *self, self->get_class(), method, 0,0,0,0);
703: value=NEW VJunction(junction);
704: } else
705: value=ncontext->get_element(name);
1.76 paf 706: if(value)
1.92 paf 707: value=&process(*value, &name); // process possible code-junction
1.76 paf 708: else {
709: value=NEW VUnknown(pool());
710: value->set_name(name);
711: }
1.63 paf 712:
1.17 paf 713: return value;
1.34 paf 714: }
1.70 paf 715:
1.159 parser 716: /** intercept_string:
1.116 paf 717: - true:
718: they want result=string value,
719: possible object result goes to wcontext
720: - false:
721: they want any result[string|object]
722: nothing goes to wcontext.
1.125 paf 723: used in @c (expression) params evaluation
1.116 paf 724: */
1.92 paf 725: Value& Request::process(Value& value, const String *name, bool intercept_string) {
1.91 paf 726: Value *result;
1.70 paf 727: Junction *junction=value.get_junction();
728: if(junction && junction->code) { // is it a code-junction?
1.92 paf 729: // process it
1.157 parser 730: #ifdef DEBUG_EXECUTE
1.158 parser 731: debug_printf(pool(), "ja->\n");
1.157 parser 732: #endif
1.70 paf 733: PUSH(self);
734: PUSH(root);
735: PUSH(rcontext);
1.129 paf 736: PUSH(wcontext);
1.70 paf 737:
1.71 paf 738: WContext *frame;
1.109 paf 739: // for expression method params
740: // wcontext is set 0
741: // using the fact in decision "which wwrapper to use"
742: bool using_code_frame=intercept_string && junction->wcontext;
743: if(using_code_frame) {
1.71 paf 744: // almost plain wwrapper about junction wcontext,
745: // BUT intercepts string writes
746: frame=NEW VCodeFrame(pool(), *junction->wcontext);
747: } else {
748: // plain wwrapper
1.108 paf 749: frame=NEW WWrapper(pool(), 0/*empty*/, false/*not constructing*/);
1.71 paf 750: }
751:
752: wcontext=frame;
1.70 paf 753: self=&junction->self;
754: root=junction->root;
755: rcontext=junction->rcontext;
756: execute(*junction->code);
1.109 paf 757: if(using_code_frame) {
1.71 paf 758: // CodeFrame soul:
759: // string writes were intercepted
760: // returning them as the result of getting code-junction
761: result=NEW VString(*frame->get_string());
762: } else
763: result=frame->result();
1.70 paf 764:
765: wcontext=static_cast<WContext *>(POP());
766: rcontext=POP();
767: root=POP();
768: self=static_cast<VAliased *>(POP());
769:
1.157 parser 770: #ifdef DEBUG_EXECUTE
1.158 parser 771: debug_printf(pool(), "<-ja returned");
1.157 parser 772: #endif
1.70 paf 773: } else
1.91 paf 774: result=&value;
775:
776: if(name)
777: result->set_name(*name);
778: return *result;
1.85 paf 779: }
780:
1.114 paf 781: const String *Request::execute_method(Value& aself, const Method& method, bool return_cstr) {
1.99 paf 782: PUSH(self);
783: PUSH(root);
784: PUSH(rcontext);
785: PUSH(wcontext);
786:
787: // initialize contexts
788: root=rcontext=self=&aself;
1.138 paf 789: wcontext=NEW WWrapper(pool(), &aself, false /*not constructing*/);
1.99 paf 790:
791: // execute!
792: execute(*method.parser_code);
793:
794: // result
1.114 paf 795: const String *result;
1.99 paf 796: if(return_cstr)
1.114 paf 797: result=&wcontext->as_string();
1.99 paf 798: else
799: result=0; // ignore result
800:
801: wcontext=static_cast<WContext *>(POP());
802: rcontext=POP();
803: root=POP();
804: self=static_cast<VAliased *>(POP());
805:
806: // return
807: return result;
808: }
809:
1.114 paf 810: const String *Request::execute_method(Value& aself,
1.99 paf 811: const String& method_name, bool return_cstr) {
812: if(Value *value=aself.get_element(method_name))
813: if(Junction *junction=value->get_junction())
814: if(const Method *method=junction->method)
815: return execute_method(aself, *method, return_cstr);
816:
1.85 paf 817: return 0;
1.70 paf 818: }