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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: */
1.174 ! parser 8: static const char *RCSId="$Id: execute.C,v 1.173 2001/07/03 09:20:55 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",
1.80 paf 37: "CONSTRUCT_VALUE", "CONSTRUCT_DOUBLE",
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",
41: "CREATE_RWPOOL", "REDUCE_RWPOOL",
1.49 paf 42: "CREATE_SWPOOL", "REDUCE_SWPOOL",
1.1 paf 43: "GET_METHOD_FRAME",
44: "STORE_PARAM",
1.51 paf 45: "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
50: "SUB", "ADD", "MUL", "DIV", "MOD",
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) {
1.157 parser 72: {
1.135 paf 73: int size=ops.quick_size();
1.158 parser 74: //debug_printf(pool, "size=%d\n", size);
1.23 paf 75: for(int i=0; i<size; i++) {
76: Operation op;
77: op.cast=ops.quick_get(i);
1.158 parser 78: debug_printf(pool, "%8X\n", op.cast);
1.23 paf 79: }
80: }
81:
1.135 paf 82: int size=ops.quick_size();
1.158 parser 83: //debug_printf(pool, "size=%d\n", size);
1.1 paf 84: for(int i=0; i<size; i++) {
1.23 paf 85: Operation op;
86: op.cast=ops.quick_get(i);
1.1 paf 87:
1.86 paf 88: if(op.code==OP_VALUE || op.code==OP_STRING__WRITE) {
1.52 paf 89: Value *value=static_cast<Value *>(ops.quick_get(++i));
1.158 parser 90: debug_printf(pool,
1.133 paf 91: "%*s%s"
92: " \"%s\" %s",
93: level*4, "", opcode_name[op.code],
94: value->get_string()->cstr(), value->type());
95: continue;
1.15 paf 96: }
1.158 parser 97: debug_printf(pool, "%*s%s", level*4, "", opcode_name[op.code]);
1.1 paf 98:
1.109 paf 99: if(op.code==OP_CURLY_CODE__STORE_PARAM || op.code==OP_EXPR_CODE__STORE_PARAM) {
1.10 paf 100: const Array *local_ops=reinterpret_cast<const Array *>(ops.quick_get(++i));
1.158 parser 101: debug_dump(pool, level+1, *local_ops);
1.1 paf 102: }
103: }
104: }
1.157 parser 105: #endif
1.1 paf 106:
1.159 parser 107: #define PUSH(value) stack.push(value)
108: #define POP() static_cast<Value *>(stack.pop())
109: #define POP_NAME() static_cast<Value *>(stack.pop())->as_string()
110:
1.32 paf 111: void Request::execute(const Array& ops) {
1.157 parser 112: #ifdef DEBUG_EXECUTE
1.158 parser 113: debug_printf(pool(), "source----------------------------\n");
114: debug_dump(pool(), 0, ops);
115: debug_printf(pool(), "execution-------------------------\n");
1.157 parser 116: #endif
1.12 paf 117:
1.135 paf 118: int size=ops.quick_size();
1.158 parser 119: //debug_printf(pool(), "size=%d\n", size);
1.11 paf 120: for(int i=0; i<size; i++) {
1.23 paf 121: Operation op;
122: op.cast=ops.quick_get(i);
1.157 parser 123: #ifdef DEBUG_EXECUTE
1.158 parser 124: debug_printf(pool(), "%d:%s", stack.top_index()+1, opcode_name[op.code]);
1.157 parser 125: #endif
1.11 paf 126:
1.23 paf 127: switch(op.code) {
1.51 paf 128: // param in next instruction
1.52 paf 129: case OP_VALUE:
1.32 paf 130: {
1.52 paf 131: Value *value=static_cast<Value *>(ops.quick_get(++i));
1.157 parser 132: #ifdef DEBUG_EXECUTE
1.158 parser 133: debug_printf(pool(), " \"%s\" %s", value->get_string()->cstr(), value->type());
1.157 parser 134: #endif
1.52 paf 135: PUSH(value);
1.32 paf 136: break;
137: }
1.109 paf 138: case OP_CURLY_CODE__STORE_PARAM:
139: case OP_EXPR_CODE__STORE_PARAM:
1.32 paf 140: {
1.73 paf 141: VMethodFrame *frame=static_cast<VMethodFrame *>(stack.top_value());
1.65 paf 142: // code
1.32 paf 143: const Array *local_ops=reinterpret_cast<const Array *>(ops.quick_get(++i));
1.157 parser 144: #ifdef DEBUG_EXECUTE
1.158 parser 145: debug_printf(pool(), " (%d)\n", local_ops->size());
146: debug_dump(pool(), 1, *local_ops);
1.157 parser 147: #endif
1.109 paf 148: // when they evaluate expression parameter,
149: // the object expression result
150: // does not need to be written into calling frame
151: // it must go into any expressions using that parameter
1.146 paf 152: // hence, we zero junction.wcontext here, and later
153: // in .process we would test that field
1.109 paf 154: // in decision "which wwrapper to use"
1.32 paf 155: Junction& j=*NEW Junction(pool(),
1.45 paf 156: *self, 0, 0,
1.130 paf 157: root,
1.149 paf 158: rcontext,
159: op.code==OP_EXPR_CODE__STORE_PARAM?0:wcontext,
1.130 paf 160: local_ops);
1.32 paf 161:
162: Value *value=NEW VJunction(j);
1.65 paf 163:
164: // store param
1.92 paf 165: frame->store_param(frame->name(), value);
1.32 paf 166: break;
167: }
1.66 paf 168: case OP_GET_CLASS:
1.38 paf 169: {
1.130 paf 170: // maybe they do ^class:method[] call, remember the fact
1.98 paf 171: wcontext->set_somebody_entered_some_class();
172:
1.82 paf 173: const String& name=POP_NAME();
1.120 paf 174: Value *value=static_cast<Value *>(classes().get(name));
175: if(!value)
1.66 paf 176: THROW(0,0,
177: &name,
1.143 paf 178: "class is undefined");
1.66 paf 179:
1.120 paf 180: PUSH(value);
1.38 paf 181: break;
182: }
1.32 paf 183:
1.51 paf 184: // OP_WITH
1.37 paf 185: case OP_WITH_SELF:
186: {
187: PUSH(self);
188: break;
189: }
190: case OP_WITH_ROOT:
1.11 paf 191: {
1.37 paf 192: PUSH(root);
1.13 paf 193: break;
1.11 paf 194: }
1.15 paf 195: case OP_WITH_READ:
196: {
1.24 paf 197: PUSH(rcontext);
1.20 paf 198: break;
199: }
1.37 paf 200: case OP_WITH_WRITE:
1.20 paf 201: {
1.37 paf 202: PUSH(wcontext);
1.20 paf 203: break;
204: }
1.37 paf 205:
1.51 paf 206: // OTHER ACTIONS BUT WITHs
1.80 paf 207: case OP_CONSTRUCT_VALUE:
1.20 paf 208: {
1.37 paf 209: Value *value=POP();
1.82 paf 210: const String& name=POP_NAME();
1.37 paf 211: Value *ncontext=POP();
1.81 paf 212: ncontext->put_element(name, value);
1.37 paf 213: value->set_name(name);
1.15 paf 214: break;
215: }
1.80 paf 216: case OP_CONSTRUCT_EXPR:
217: {
218: Value *value=POP();
1.82 paf 219: const String& name=POP_NAME();
1.80 paf 220: Value *ncontext=POP();
1.128 paf 221: ncontext->put_element(name, value->as_expr_result());
1.80 paf 222: value->set_name(name);
223: break;
224: }
1.108 paf 225: case OP_WRITE_VALUE:
1.13 paf 226: {
1.24 paf 227: Value *value=POP();
1.92 paf 228: write_assign_lang(*value);
1.150 paf 229:
230: // forget the fact they've entered some ^object.method[].
231: // see OP_GET_ELEMENT
232: wcontext->clear_somebody_entered_some_object();
1.86 paf 233: break;
234: }
1.108 paf 235: case OP_WRITE_EXPR_RESULT:
236: {
237: Value *value=POP();
1.128 paf 238: write_expr_result(*value->as_expr_result());
1.108 paf 239: break;
240: }
1.86 paf 241: case OP_STRING__WRITE:
242: {
243: VString *vstring=static_cast<VString *>(ops.quick_get(++i));
1.157 parser 244: #ifdef DEBUG_EXECUTE
1.158 parser 245: debug_printf(pool(), " \"%s\"", vstring->string().cstr());
1.157 parser 246: #endif
1.122 paf 247: write_no_lang(vstring->string());
1.13 paf 248: break;
1.14 paf 249: }
1.13 paf 250:
1.15 paf 251: case OP_GET_ELEMENT:
1.11 paf 252: {
1.150 paf 253: // maybe they do ^object.method[] call, remember the fact
254: wcontext->inc_somebody_entered_some_object();
255:
1.174 ! parser 256: //_asm int 3;
1.17 paf 257: Value *value=get_element();
1.24 paf 258: PUSH(value);
1.17 paf 259: break;
260: }
261:
1.18 paf 262: case OP_GET_ELEMENT__WRITE:
1.17 paf 263: {
264: Value *value=get_element();
1.92 paf 265: write_assign_lang(*value);
1.17 paf 266: break;
267: }
268:
1.32 paf 269:
1.17 paf 270: case OP_CREATE_EWPOOL:
271: {
1.24 paf 272: PUSH(wcontext);
1.137 paf 273: PUSH((void *)flang);
274: flang=String::UL_PASS_APPENDED;
1.138 paf 275: wcontext=NEW WWrapper(pool(), 0 /*empty*/, true /*constructing*/);
1.17 paf 276: break;
277: }
278: case OP_REDUCE_EWPOOL:
279: {
1.36 paf 280: Value *value=wcontext->result();
1.137 paf 281: flang=static_cast<String::Untaint_lang>(reinterpret_cast<int>(POP()));
1.25 paf 282: wcontext=static_cast<WContext *>(POP());
1.24 paf 283: PUSH(value);
1.13 paf 284: break;
1.15 paf 285: }
1.13 paf 286:
1.26 paf 287: case OP_CREATE_RWPOOL:
288: {
289: Value *ncontext=POP();
290: PUSH(rcontext);
1.146 paf 291: PUSH(wcontext);
1.26 paf 292: rcontext=ncontext;
1.138 paf 293: wcontext=NEW WWrapper(pool(), ncontext, false /*not constructing*/);
1.26 paf 294: break;
295: }
296: case OP_REDUCE_RWPOOL:
297: {
1.82 paf 298: const String *string=wcontext->get_string();
1.80 paf 299: Value *value;
300: if(string)
301: value=NEW VString(*string);
302: else
1.167 parser 303: value=NEW VVoid(pool());
1.26 paf 304: wcontext=static_cast<WContext *>(POP());
305: rcontext=POP();
306: PUSH(value);
307: break;
308: }
1.49 paf 309: case OP_CREATE_SWPOOL:
310: {
311: PUSH(wcontext);
1.138 paf 312: wcontext=NEW WWrapper(pool(), 0 /*empty*/, false /*not constructing*/);
1.49 paf 313: break;
314: }
315: case OP_REDUCE_SWPOOL:
316: {
317: // from "$a $b" part of expression taking only string value,
318: // ignoring any other content of wcontext
1.82 paf 319: const String *string=wcontext->get_string();
1.80 paf 320: Value *value;
321: if(string)
322: value=NEW VString(*string);
323: else
1.167 parser 324: NEW VVoid(pool());
1.50 paf 325: wcontext=static_cast<WContext *>(POP());
1.49 paf 326: PUSH(value);
327: break;
328: }
329:
1.51 paf 330: // CALL
1.28 paf 331: case OP_GET_METHOD_FRAME:
332: {
1.32 paf 333: Value *value=POP();
1.138 paf 334:
1.111 paf 335: // info:
336: // code compiled so that this one's always method-junction,
337: // not a code-junction
1.32 paf 338: Junction *junction=value->get_junction();
1.31 paf 339: if(!junction)
1.28 paf 340: THROW(0,0,
1.42 paf 341: &value->name(),
1.111 paf 342: "(%s) not a method or junction, can not call it",
1.38 paf 343: value->type());
1.70 paf 344:
1.138 paf 345: bool is_constructor=
346: wcontext->constructing() && // constructing?
347: wcontext->somebody_entered_some_class(); // ^class:method[..]?
348: if(is_constructor)
349: wcontext->constructing(false);
350:
1.156 parser 351: VMethodFrame *frame=NEW VMethodFrame(pool(), value->name(), *junction, is_constructor);
1.28 paf 352: PUSH(frame);
353: break;
354: }
355: case OP_STORE_PARAM:
356: {
357: Value *value=POP();
1.73 paf 358: VMethodFrame *frame=static_cast<VMethodFrame *>(stack.top_value());
1.92 paf 359: frame->store_param(frame->name(), value);
1.29 paf 360: break;
361: }
362:
363: case OP_CALL:
364: {
1.157 parser 365: #ifdef DEBUG_EXECUTE
1.158 parser 366: debug_printf(pool(), "->\n");
1.157 parser 367: #endif
1.34 paf 368: VMethodFrame *frame=static_cast<VMethodFrame *>(POP());
369: frame->fill_unspecified_params();
1.45 paf 370: PUSH(self);
371: PUSH(root);
372: PUSH(rcontext);
373: PUSH(wcontext);
374:
1.100 paf 375: VStateless_class *called_class=frame->junction.self.get_class();
1.150 paf 376: // not ^name.method call and
1.156 parser 377: // is context object or class & is it my class or my parent's class and?
1.100 paf 378: VStateless_class *read_class=rcontext->get_class();
1.156 parser 379: if(!wcontext->somebody_entered_some_object() &&
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();
1.166 parser 725: Value *value;
1.147 paf 726: if(Method* method=OP.get_method(name)) { // 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: } else
1.166 parser 732: value=ncontext->get_element(name);
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:
1.114 paf 808: const String *Request::execute_method(Value& aself, const Method& method, bool return_cstr) {
1.99 paf 809: PUSH(self);
810: PUSH(root);
811: PUSH(rcontext);
812: PUSH(wcontext);
813:
814: // initialize contexts
815: root=rcontext=self=&aself;
1.138 paf 816: wcontext=NEW WWrapper(pool(), &aself, false /*not constructing*/);
1.99 paf 817:
818: // execute!
819: execute(*method.parser_code);
820:
821: // result
1.114 paf 822: const String *result;
1.99 paf 823: if(return_cstr)
1.114 paf 824: result=&wcontext->as_string();
1.99 paf 825: else
826: result=0; // ignore result
827:
828: wcontext=static_cast<WContext *>(POP());
829: rcontext=POP();
830: root=POP();
831: self=static_cast<VAliased *>(POP());
832:
833: // return
834: return result;
835: }
836:
1.114 paf 837: const String *Request::execute_method(Value& aself,
1.99 paf 838: const String& method_name, bool return_cstr) {
839: if(Value *value=aself.get_element(method_name))
840: if(Junction *junction=value->get_junction())
841: if(const Method *method=junction->method)
842: return execute_method(aself, *method, return_cstr);
843:
1.85 paf 844: return 0;
1.70 paf 845: }