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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: */
1.182 ! parser 8: static const char *RCSId="$Id: execute.C,v 1.181 2001/07/24 15:43:56 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:
1.109 paf 98: if(op.code==OP_CURLY_CODE__STORE_PARAM || op.code==OP_EXPR_CODE__STORE_PARAM) {
1.10 paf 99: const Array *local_ops=reinterpret_cast<const Array *>(ops.quick_get(++i));
1.158 parser 100: debug_dump(pool, level+1, *local_ops);
1.1 paf 101: }
102: }
103: }
1.157 parser 104: #endif
1.1 paf 105:
1.159 parser 106: #define PUSH(value) stack.push(value)
107: #define POP() static_cast<Value *>(stack.pop())
108: #define POP_NAME() static_cast<Value *>(stack.pop())->as_string()
109:
1.32 paf 110: void Request::execute(const Array& ops) {
1.157 parser 111: #ifdef DEBUG_EXECUTE
1.158 parser 112: debug_printf(pool(), "source----------------------------\n");
113: debug_dump(pool(), 0, ops);
114: debug_printf(pool(), "execution-------------------------\n");
1.157 parser 115: #endif
1.12 paf 116:
1.135 paf 117: int size=ops.quick_size();
1.158 parser 118: //debug_printf(pool(), "size=%d\n", size);
1.11 paf 119: for(int i=0; i<size; i++) {
1.23 paf 120: Operation op;
121: op.cast=ops.quick_get(i);
1.157 parser 122: #ifdef DEBUG_EXECUTE
1.158 parser 123: debug_printf(pool(), "%d:%s", stack.top_index()+1, opcode_name[op.code]);
1.157 parser 124: #endif
1.11 paf 125:
1.23 paf 126: switch(op.code) {
1.51 paf 127: // param in next instruction
1.52 paf 128: case OP_VALUE:
1.32 paf 129: {
1.52 paf 130: Value *value=static_cast<Value *>(ops.quick_get(++i));
1.157 parser 131: #ifdef DEBUG_EXECUTE
1.158 parser 132: debug_printf(pool(), " \"%s\" %s", value->get_string()->cstr(), value->type());
1.157 parser 133: #endif
1.52 paf 134: PUSH(value);
1.32 paf 135: break;
136: }
1.109 paf 137: case OP_CURLY_CODE__STORE_PARAM:
138: case OP_EXPR_CODE__STORE_PARAM:
1.32 paf 139: {
1.73 paf 140: VMethodFrame *frame=static_cast<VMethodFrame *>(stack.top_value());
1.65 paf 141: // code
1.32 paf 142: const Array *local_ops=reinterpret_cast<const Array *>(ops.quick_get(++i));
1.157 parser 143: #ifdef DEBUG_EXECUTE
1.158 parser 144: debug_printf(pool(), " (%d)\n", local_ops->size());
145: debug_dump(pool(), 1, *local_ops);
1.157 parser 146: #endif
1.109 paf 147: // when they evaluate expression parameter,
148: // the object expression result
149: // does not need to be written into calling frame
150: // it must go into any expressions using that parameter
1.146 paf 151: // hence, we zero junction.wcontext here, and later
152: // in .process we would test that field
1.109 paf 153: // in decision "which wwrapper to use"
1.32 paf 154: Junction& j=*NEW Junction(pool(),
1.45 paf 155: *self, 0, 0,
1.130 paf 156: root,
1.149 paf 157: rcontext,
158: op.code==OP_EXPR_CODE__STORE_PARAM?0:wcontext,
1.130 paf 159: local_ops);
1.32 paf 160:
161: Value *value=NEW VJunction(j);
1.65 paf 162:
163: // store param
1.92 paf 164: frame->store_param(frame->name(), value);
1.32 paf 165: break;
166: }
1.66 paf 167: case OP_GET_CLASS:
1.38 paf 168: {
1.130 paf 169: // maybe they do ^class:method[] call, remember the fact
1.98 paf 170: wcontext->set_somebody_entered_some_class();
171:
1.82 paf 172: const String& name=POP_NAME();
1.120 paf 173: Value *value=static_cast<Value *>(classes().get(name));
174: if(!value)
1.66 paf 175: THROW(0,0,
176: &name,
1.143 paf 177: "class is undefined");
1.66 paf 178:
1.120 paf 179: PUSH(value);
1.38 paf 180: break;
181: }
1.32 paf 182:
1.51 paf 183: // OP_WITH
1.37 paf 184: case OP_WITH_SELF:
185: {
186: PUSH(self);
187: break;
188: }
189: case OP_WITH_ROOT:
1.11 paf 190: {
1.37 paf 191: PUSH(root);
1.13 paf 192: break;
1.11 paf 193: }
1.15 paf 194: case OP_WITH_READ:
195: {
1.24 paf 196: PUSH(rcontext);
1.20 paf 197: break;
198: }
1.37 paf 199: case OP_WITH_WRITE:
1.20 paf 200: {
1.37 paf 201: PUSH(wcontext);
1.20 paf 202: break;
203: }
1.37 paf 204:
1.51 paf 205: // OTHER ACTIONS BUT WITHs
1.80 paf 206: case OP_CONSTRUCT_VALUE:
1.20 paf 207: {
1.37 paf 208: Value *value=POP();
1.82 paf 209: const String& name=POP_NAME();
1.37 paf 210: Value *ncontext=POP();
1.81 paf 211: ncontext->put_element(name, value);
1.37 paf 212: value->set_name(name);
1.15 paf 213: break;
214: }
1.80 paf 215: case OP_CONSTRUCT_EXPR:
216: {
217: Value *value=POP();
1.82 paf 218: const String& name=POP_NAME();
1.80 paf 219: Value *ncontext=POP();
1.128 paf 220: ncontext->put_element(name, value->as_expr_result());
1.80 paf 221: value->set_name(name);
222: break;
223: }
1.182 ! parser 224: case OP_CURLY_CODE__CONSTRUCT:
! 225: {
! 226: const Array *local_ops=reinterpret_cast<const Array *>(ops.quick_get(++i));
! 227: #ifdef DEBUG_EXECUTE
! 228: debug_printf(pool(), " (%d)\n", local_ops->size());
! 229: debug_dump(pool(), 1, *local_ops);
! 230: #endif
! 231: Junction& j=*NEW Junction(pool(),
! 232: *self, 0, 0,
! 233: root,
! 234: rcontext,
! 235: wcontext,
! 236: local_ops);
! 237:
! 238: Value *value=NEW VJunction(j);
! 239: const String& name=POP_NAME();
! 240: Value *ncontext=POP();
! 241: ncontext->put_element(name, value);
! 242: value->set_name(name);
! 243: break;
! 244: }
1.108 paf 245: case OP_WRITE_VALUE:
1.13 paf 246: {
1.24 paf 247: Value *value=POP();
1.92 paf 248: write_assign_lang(*value);
1.150 paf 249:
250: // forget the fact they've entered some ^object.method[].
251: // see OP_GET_ELEMENT
252: wcontext->clear_somebody_entered_some_object();
1.86 paf 253: break;
254: }
1.108 paf 255: case OP_WRITE_EXPR_RESULT:
256: {
257: Value *value=POP();
1.128 paf 258: write_expr_result(*value->as_expr_result());
1.108 paf 259: break;
260: }
1.86 paf 261: case OP_STRING__WRITE:
262: {
263: VString *vstring=static_cast<VString *>(ops.quick_get(++i));
1.157 parser 264: #ifdef DEBUG_EXECUTE
1.158 parser 265: debug_printf(pool(), " \"%s\"", vstring->string().cstr());
1.157 parser 266: #endif
1.122 paf 267: write_no_lang(vstring->string());
1.13 paf 268: break;
1.14 paf 269: }
1.13 paf 270:
1.15 paf 271: case OP_GET_ELEMENT:
1.11 paf 272: {
1.150 paf 273: // maybe they do ^object.method[] call, remember the fact
274: wcontext->inc_somebody_entered_some_object();
275:
1.174 parser 276: //_asm int 3;
1.17 paf 277: Value *value=get_element();
1.24 paf 278: PUSH(value);
1.17 paf 279: break;
280: }
281:
1.18 paf 282: case OP_GET_ELEMENT__WRITE:
1.17 paf 283: {
284: Value *value=get_element();
1.92 paf 285: write_assign_lang(*value);
1.17 paf 286: break;
287: }
288:
1.32 paf 289:
1.17 paf 290: case OP_CREATE_EWPOOL:
291: {
1.24 paf 292: PUSH(wcontext);
1.137 paf 293: PUSH((void *)flang);
294: flang=String::UL_PASS_APPENDED;
1.138 paf 295: wcontext=NEW WWrapper(pool(), 0 /*empty*/, true /*constructing*/);
1.17 paf 296: break;
297: }
298: case OP_REDUCE_EWPOOL:
299: {
1.36 paf 300: Value *value=wcontext->result();
1.137 paf 301: flang=static_cast<String::Untaint_lang>(reinterpret_cast<int>(POP()));
1.25 paf 302: wcontext=static_cast<WContext *>(POP());
1.24 paf 303: PUSH(value);
1.13 paf 304: break;
1.15 paf 305: }
1.13 paf 306:
1.49 paf 307: case OP_CREATE_SWPOOL:
308: {
309: PUSH(wcontext);
1.138 paf 310: wcontext=NEW WWrapper(pool(), 0 /*empty*/, false /*not constructing*/);
1.49 paf 311: break;
312: }
313: case OP_REDUCE_SWPOOL:
314: {
315: // from "$a $b" part of expression taking only string value,
316: // ignoring any other content of wcontext
1.82 paf 317: const String *string=wcontext->get_string();
1.80 paf 318: Value *value;
319: if(string)
320: value=NEW VString(*string);
321: else
1.167 parser 322: NEW VVoid(pool());
1.50 paf 323: wcontext=static_cast<WContext *>(POP());
1.49 paf 324: PUSH(value);
325: break;
326: }
327:
1.51 paf 328: // CALL
1.28 paf 329: case OP_GET_METHOD_FRAME:
330: {
1.32 paf 331: Value *value=POP();
1.138 paf 332:
1.111 paf 333: // info:
334: // code compiled so that this one's always method-junction,
335: // not a code-junction
1.32 paf 336: Junction *junction=value->get_junction();
1.31 paf 337: if(!junction)
1.28 paf 338: THROW(0,0,
1.42 paf 339: &value->name(),
1.111 paf 340: "(%s) not a method or junction, can not call it",
1.38 paf 341: value->type());
1.70 paf 342:
1.138 paf 343: bool is_constructor=
344: wcontext->constructing() && // constructing?
345: wcontext->somebody_entered_some_class(); // ^class:method[..]?
346: if(is_constructor)
347: wcontext->constructing(false);
348:
1.156 parser 349: VMethodFrame *frame=NEW VMethodFrame(pool(), value->name(), *junction, is_constructor);
1.28 paf 350: PUSH(frame);
351: break;
352: }
353: case OP_STORE_PARAM:
354: {
355: Value *value=POP();
1.73 paf 356: VMethodFrame *frame=static_cast<VMethodFrame *>(stack.top_value());
1.92 paf 357: frame->store_param(frame->name(), value);
1.29 paf 358: break;
359: }
360:
361: case OP_CALL:
362: {
1.157 parser 363: #ifdef DEBUG_EXECUTE
1.158 parser 364: debug_printf(pool(), "->\n");
1.157 parser 365: #endif
1.34 paf 366: VMethodFrame *frame=static_cast<VMethodFrame *>(POP());
367: frame->fill_unspecified_params();
1.45 paf 368: PUSH(self);
369: PUSH(root);
370: PUSH(rcontext);
371: PUSH(wcontext);
372:
1.100 paf 373: VStateless_class *called_class=frame->junction.self.get_class();
1.180 parser 374: // not ^name.method call, name:method call; and
1.156 parser 375: // is context object or class & is it my class or my parent's class and?
1.100 paf 376: VStateless_class *read_class=rcontext->get_class();
1.180 parser 377: if(
378: !(wcontext->somebody_entered_some_object() &&
379: !wcontext->somebody_entered_some_class()) &&
1.150 paf 380: read_class && read_class->is_or_derived_from(*called_class)) // yes
1.74 paf 381: self=rcontext; // class dynamic call
1.75 paf 382: else // no, not me or relative of mine (total stranger)
1.153 paf 383: // were are constructing something and
1.156 parser 384: // our constructor is just method call and
385: // not static-only-method call
1.153 paf 386: if(frame->is_constructor &&
1.156 parser 387: wcontext->somebody_entered_some_object()==1 &&
388: frame->junction.method->call_type!=Method::CT_STATIC) {
1.138 paf 389: // this is a constructor call
1.149 paf 390: // some stateless_object creatable derivates
391: if(Value *value=called_class->create_new_value(pool()))
392: self=value;
1.121 paf 393: else // stateful object
1.94 paf 394: self=NEW VObject(pool(), *called_class);
1.83 paf 395: frame->write(*self,
1.136 paf 396: String::UL_CLEAN // not used, always an object, not string
1.83 paf 397: );
1.75 paf 398: } else
399: self=&frame->junction.self; // no, static or simple dynamic call
400:
1.45 paf 401: frame->set_self(*self);
1.29 paf 402: root=rcontext=wcontext=frame;
1.47 paf 403: {
1.48 paf 404: // take object or class from any wrappers
1.102 paf 405: // and substitute class alias to the class they are called AS
406: Temp_alias temp_alias(*self->get_aliased(), *frame->junction.vclass);
1.68 paf 407:
1.99 paf 408: const Method& method=*frame->junction.method;
1.134 paf 409: Method::Call_type call_type=
410: called_class==self ? Method::CT_STATIC : Method::CT_DYNAMIC;
411: if(
412: method.call_type==Method::CT_ANY ||
413: method.call_type==call_type) // allowed call type?
414: if(method.native_code) { // native code?
1.154 paf 415: method.check_actual_numbered_params(pool(),
1.134 paf 416: frame->junction.self,
417: frame->name(), frame->numbered_params());
1.160 parser 418: method.native_code(
1.134 paf 419: *this,
420: frame->name(), frame->numbered_params()); // execute it
1.159 parser 421: } else { // parser code
422: if(++anti_endless_execute_recoursion==ANTI_ENDLESS_EXECUTE_RECOURSION) {
423: anti_endless_execute_recoursion=0; // give @exception a chance
424: THROW(0, 0,
1.160 parser 425: &frame->name(),
1.159 parser 426: "endless recursion detected");
427: }
428:
1.134 paf 429: execute(*method.parser_code); // execute it
1.159 parser 430: anti_endless_execute_recoursion--;
431: }
1.134 paf 432: else
433: THROW(0, 0,
434: &frame->name(),
435: "is not allowed to be called %s",
436: call_type==Method::CT_STATIC?"statically":"dynamically");
437:
1.47 paf 438: }
1.36 paf 439: Value *value=wcontext->result();
1.45 paf 440:
441: wcontext=static_cast<WContext *>(POP());
442: rcontext=POP();
443: root=POP();
444: self=static_cast<VAliased *>(POP());
1.62 paf 445:
1.61 paf 446: PUSH(value);
1.157 parser 447: #ifdef DEBUG_EXECUTE
1.158 parser 448: debug_printf(pool(), "<-returned");
1.157 parser 449: #endif
1.49 paf 450: break;
451: }
452:
1.55 paf 453: // expression ops: unary
454: case OP_NEG:
455: {
456: Value *operand=POP();
1.128 paf 457: Value *value=NEW VDouble(pool(), -operand->as_double());
1.55 paf 458: PUSH(value);
459: break;
460: }
461: case OP_INV:
462: {
463: Value *operand=POP();
1.155 parser 464: Value *value=NEW VDouble(pool(), ~operand->as_int());
1.55 paf 465: PUSH(value);
466: break;
467: }
468: case OP_NOT:
469: {
470: Value *operand=POP();
1.128 paf 471: Value *value=NEW VBool(pool(), !operand->as_bool());
1.55 paf 472: PUSH(value);
473: break;
474: }
1.62 paf 475: case OP_DEF:
476: {
477: Value *operand=POP();
1.128 paf 478: Value *value=NEW VBool(pool(), operand->is_defined());
1.62 paf 479: PUSH(value);
480: break;
481: }
482: case OP_IN:
483: {
484: Value *operand=POP();
1.110 paf 485: const char *path=operand->as_string().cstr();
1.151 paf 486: Value *value=NEW VBool(pool(),
487: info.uri && strncmp(path, info.uri, strlen(path))==0);
1.62 paf 488: PUSH(value);
489: break;
490: }
491: case OP_FEXISTS:
492: {
493: Value *operand=POP();
1.127 paf 494: Value *value=NEW VBool(pool(),
495: file_readable(absolute(operand->as_string())));
1.148 paf 496: PUSH(value);
497: break;
498: }
499: case OP_DEXISTS:
500: {
501: Value *operand=POP();
502: Value *value=NEW VBool(pool(),
503: dir_readable(absolute(operand->as_string())));
1.62 paf 504: PUSH(value);
505: break;
506: }
1.55 paf 507:
508: // expression ops: binary
509: case OP_SUB:
1.53 paf 510: {
1.61 paf 511: Value *b=POP(); Value *a=POP();
1.128 paf 512: Value *value=NEW VDouble(pool(), a->as_double() - b->as_double());
1.53 paf 513: PUSH(value);
514: break;
515: }
1.55 paf 516: case OP_ADD:
1.53 paf 517: {
1.61 paf 518: Value *b=POP(); Value *a=POP();
1.128 paf 519: Value *value=NEW VDouble(pool(), a->as_double() + b->as_double());
1.53 paf 520: PUSH(value);
521: break;
522: }
1.49 paf 523: case OP_MUL:
524: {
1.61 paf 525: Value *b=POP(); Value *a=POP();
1.128 paf 526: Value *value=NEW VDouble(pool(), a->as_double() * b->as_double());
1.53 paf 527: PUSH(value);
528: break;
529: }
530: case OP_DIV:
531: {
1.61 paf 532: Value *b=POP(); Value *a=POP();
1.170 parser 533:
534: double a_double=a->as_double();
535: double b_double=b->as_double();
536:
1.171 parser 537: if(b_double == 0) {
538: const String *problem_source=&b->as_string();
539: #ifndef NO_STRING_ORIGIN
540: if(!problem_source->origin().file)
1.172 parser 541: problem_source=&b->name();
1.171 parser 542: #endif
1.170 parser 543: THROW(0, 0,
1.171 parser 544: problem_source,
1.170 parser 545: "Division by zero");
1.171 parser 546: }
1.170 parser 547:
1.171 parser 548: Value *value=NEW VDouble(pool(), a_double / b_double);
1.54 paf 549: PUSH(value);
550: break;
551: }
1.55 paf 552: case OP_MOD:
553: {
1.61 paf 554: Value *b=POP(); Value *a=POP();
1.170 parser 555:
1.173 parser 556: double a_double=a->as_double();
557: double b_double=b->as_double();
1.170 parser 558:
1.173 parser 559: if(b_double == 0) {
1.171 parser 560: const String *problem_source=&b->as_string();
561: #ifndef NO_STRING_ORIGIN
562: if(!problem_source->origin().file)
1.172 parser 563: problem_source=&b->name();
1.171 parser 564: #endif
1.170 parser 565: THROW(0, 0,
1.171 parser 566: problem_source,
1.170 parser 567: "Modulus by zero");
1.171 parser 568: }
1.170 parser 569:
1.173 parser 570: Value *value=NEW VDouble(pool(), fmod(a_double, b_double));
1.55 paf 571: PUSH(value);
572: break;
573: }
574: case OP_BIN_AND:
1.54 paf 575: {
1.61 paf 576: Value *b=POP(); Value *a=POP();
1.78 paf 577: Value *value=NEW VDouble(pool(),
1.155 parser 578: a->as_int() &
579: b->as_int());
1.54 paf 580: PUSH(value);
581: break;
582: }
1.55 paf 583: case OP_BIN_OR:
1.54 paf 584: {
1.61 paf 585: Value *b=POP(); Value *a=POP();
1.78 paf 586: Value *value=NEW VDouble(pool(),
1.155 parser 587: a->as_int() |
588: b->as_int());
1.55 paf 589: PUSH(value);
590: break;
591: }
1.56 paf 592: case OP_BIN_XOR:
593: {
1.61 paf 594: Value *b=POP(); Value *a=POP();
1.78 paf 595: Value *value=NEW VDouble(pool(),
1.155 parser 596: a->as_int() ^
597: b->as_int());
1.56 paf 598: PUSH(value);
599: break;
600: }
1.55 paf 601: case OP_LOG_AND:
602: {
1.61 paf 603: Value *b=POP(); Value *a=POP();
1.128 paf 604: Value *value=NEW VBool(pool(), a->as_bool() && b->as_bool());
1.55 paf 605: PUSH(value);
606: break;
607: }
608: case OP_LOG_OR:
609: {
1.61 paf 610: Value *b=POP(); Value *a=POP();
1.128 paf 611: Value *value=NEW VBool(pool(), a->as_bool() || b->as_bool());
1.56 paf 612: PUSH(value);
613: break;
614: }
615: case OP_LOG_XOR:
616: {
1.61 paf 617: Value *b=POP(); Value *a=POP();
1.128 paf 618: Value *value=NEW VBool(pool(), a->as_bool() ^ b->as_bool());
1.55 paf 619: PUSH(value);
620: break;
621: }
622: case OP_NUM_LT:
623: {
1.61 paf 624: Value *b=POP(); Value *a=POP();
1.128 paf 625: Value *value=NEW VBool(pool(), a->as_double() < b->as_double());
1.55 paf 626: PUSH(value);
627: break;
628: }
629: case OP_NUM_GT:
630: {
1.61 paf 631: Value *b=POP(); Value *a=POP();
1.128 paf 632: Value *value=NEW VBool(pool(), a->as_double() > b->as_double());
1.55 paf 633: PUSH(value);
634: break;
635: }
636: case OP_NUM_LE:
637: {
1.61 paf 638: Value *b=POP(); Value *a=POP();
1.128 paf 639: Value *value=NEW VBool(pool(), a->as_double() <= b->as_double());
1.55 paf 640: PUSH(value);
641: break;
642: }
643: case OP_NUM_GE:
644: {
1.61 paf 645: Value *b=POP(); Value *a=POP();
1.128 paf 646: Value *value=NEW VBool(pool(), a->as_double() >= b->as_double());
1.55 paf 647: PUSH(value);
648: break;
649: }
650: case OP_NUM_EQ:
651: {
1.61 paf 652: Value *b=POP(); Value *a=POP();
1.128 paf 653: Value *value=NEW VBool(pool(), a->as_double() == b->as_double());
1.55 paf 654: PUSH(value);
655: break;
656: }
657: case OP_NUM_NE:
658: {
1.61 paf 659: Value *b=POP(); Value *a=POP();
1.128 paf 660: Value *value=NEW VBool(pool(), a->as_double() != b->as_double());
1.54 paf 661: PUSH(value);
662: break;
663: }
1.58 paf 664: case OP_STR_LT:
665: {
1.61 paf 666: Value *b=POP(); Value *a=POP();
1.78 paf 667: Value *value=NEW VBool(pool(), a->as_string() < b->as_string());
1.58 paf 668: PUSH(value);
669: break;
670: }
671: case OP_STR_GT:
672: {
1.61 paf 673: Value *b=POP(); Value *a=POP();
1.78 paf 674: Value *value=NEW VBool(pool(), a->as_string() > b->as_string());
1.58 paf 675: PUSH(value);
676: break;
677: }
1.55 paf 678: case OP_STR_LE:
1.58 paf 679: {
1.61 paf 680: Value *b=POP(); Value *a=POP();
1.78 paf 681: Value *value=NEW VBool(pool(), a->as_string() <= b->as_string());
1.58 paf 682: PUSH(value);
683: break;
684: }
1.55 paf 685: case OP_STR_GE:
1.54 paf 686: {
1.61 paf 687: Value *b=POP(); Value *a=POP();
1.78 paf 688: Value *value=NEW VBool(pool(), a->as_string() >= b->as_string());
1.58 paf 689: PUSH(value);
690: break;
691: }
692: case OP_STR_EQ:
693: {
1.61 paf 694: Value *b=POP(); Value *a=POP();
1.78 paf 695: Value *value=NEW VBool(pool(), a->as_string() == b->as_string());
1.58 paf 696: PUSH(value);
697: break;
698: }
699: case OP_STR_NE:
700: {
1.61 paf 701: Value *b=POP(); Value *a=POP();
1.78 paf 702: Value *value=NEW VBool(pool(), a->as_string() != b->as_string());
1.103 paf 703: PUSH(value);
704: break;
705: }
706: case OP_IS:
707: {
708: Value *b=POP(); Value *a=POP();
709: Value *value=NEW VBool(pool(), b->as_string() == a->type());
1.49 paf 710: PUSH(value);
1.28 paf 711: break;
712: }
713:
1.11 paf 714: default:
1.67 paf 715: THROW(0,0,
716: 0,
1.139 paf 717: "invalid opcode %d", op.code);
1.11 paf 718: }
719: }
1.1 paf 720: }
1.17 paf 721:
722: Value *Request::get_element() {
1.82 paf 723: const String& name=POP_NAME();
1.24 paf 724: Value *ncontext=POP();
1.181 parser 725: Value *value=ncontext->get_element(name);
726: if(!value)
727: if(Method* method=OP.get_method(name)) { // maybe operator?
728: // as if that method were in self and we have normal dynamic method here
729: Junction& junction=*NEW Junction(pool(),
730: *self, self->get_class(), method, 0,0,0,0);
731: value=NEW VJunction(junction);
732: }
1.76 paf 733: if(value)
1.92 paf 734: value=&process(*value, &name); // process possible code-junction
1.76 paf 735: else {
1.167 parser 736: value=NEW VVoid(pool());
1.76 paf 737: value->set_name(name);
738: }
1.63 paf 739:
1.17 paf 740: return value;
1.34 paf 741: }
1.70 paf 742:
1.162 parser 743: /** @param intercept_string
1.116 paf 744: - true:
745: they want result=string value,
746: possible object result goes to wcontext
747: - false:
748: they want any result[string|object]
749: nothing goes to wcontext.
1.125 paf 750: used in @c (expression) params evaluation
1.116 paf 751: */
1.92 paf 752: Value& Request::process(Value& value, const String *name, bool intercept_string) {
1.91 paf 753: Value *result;
1.70 paf 754: Junction *junction=value.get_junction();
755: if(junction && junction->code) { // is it a code-junction?
1.92 paf 756: // process it
1.157 parser 757: #ifdef DEBUG_EXECUTE
1.158 parser 758: debug_printf(pool(), "ja->\n");
1.157 parser 759: #endif
1.70 paf 760: PUSH(self);
761: PUSH(root);
762: PUSH(rcontext);
1.129 paf 763: PUSH(wcontext);
1.70 paf 764:
1.71 paf 765: WContext *frame;
1.109 paf 766: // for expression method params
767: // wcontext is set 0
768: // using the fact in decision "which wwrapper to use"
769: bool using_code_frame=intercept_string && junction->wcontext;
770: if(using_code_frame) {
1.71 paf 771: // almost plain wwrapper about junction wcontext,
772: // BUT intercepts string writes
773: frame=NEW VCodeFrame(pool(), *junction->wcontext);
774: } else {
775: // plain wwrapper
1.108 paf 776: frame=NEW WWrapper(pool(), 0/*empty*/, false/*not constructing*/);
1.71 paf 777: }
778:
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: }