![[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:
1.158 ! parser 8: $Id: execute.C,v 1.157 2001/05/16 16:48:56 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:
1.1 paf 29:
1.24 paf 30: #define PUSH(value) stack.push(value)
31: #define POP() static_cast<Value *>(stack.pop())
1.32 paf 32: #define POP_NAME() static_cast<Value *>(stack.pop())->as_string()
1.24 paf 33:
1.157 parser 34: #ifdef DEBUG_EXECUTE
1.1 paf 35: char *opcode_name[]={
1.49 paf 36: // literals
1.109 paf 37: "VALUE", "CURLY_CODE__STORE_PARAM", "EXPR_CODE__STORE_PARAM",
1.49 paf 38:
39: // actions
1.51 paf 40: "WITH_SELF", "WITH_ROOT", "WITH_READ", "WITH_WRITE",
1.66 paf 41: "GET_CLASS",
1.80 paf 42: "CONSTRUCT_VALUE", "CONSTRUCT_DOUBLE",
1.108 paf 43: "WRITE_VALUE", "WRITE_EXPR_RESULT", "STRING__WRITE",
1.18 paf 44: "GET_ELEMENT", "GET_ELEMENT__WRITE",
1.1 paf 45: "CREATE_EWPOOL", "REDUCE_EWPOOL",
46: "CREATE_RWPOOL", "REDUCE_RWPOOL",
1.49 paf 47: "CREATE_SWPOOL", "REDUCE_SWPOOL",
1.1 paf 48: "GET_METHOD_FRAME",
49: "STORE_PARAM",
1.51 paf 50: "CALL",
1.49 paf 51:
52: // expression ops: unary
1.148 paf 53: "NEG", "INV", "NOT", "DEF", "IN", "FEXISTS", "DEXISTS",
1.49 paf 54: // expression ops: binary
55: "SUB", "ADD", "MUL", "DIV", "MOD",
1.56 paf 56: "BIN_AND", "BIN_OR", "BIN_XOR",
57: "LOG_AND", "LOG_OR", "LOG_XOR",
1.49 paf 58: "NUM_LT", "NUM_GT", "NUM_LE", "NUM_GE", "NUM_EQ", "NUM_NE",
1.103 paf 59: "STR_LT", "STR_GT", "STR_LE", "STR_GE", "STR_EQ", "STR_NE",
60: "IS"
1.1 paf 61: };
62:
1.158 ! parser 63: void va_debug_printf(Pool& pool, const char *fmt,va_list args) {
1.127 paf 64: char buf[MAX_STRING];
65: vsnprintf(buf, MAX_STRING, fmt, args);
66: SAPI::log(pool, "%s", buf);
1.107 paf 67: }
68:
1.158 ! parser 69: void debug_printf(Pool& pool, const char *fmt, ...) {
1.107 paf 70: va_list args;
71: va_start(args,fmt);
1.158 ! parser 72: va_debug_printf(pool,fmt,args);
1.107 paf 73: va_end(args);
1.105 paf 74: }
75:
1.158 ! parser 76: void debug_dump(Pool& pool, int level, const Array& ops) {
1.157 parser 77: {
1.135 paf 78: int size=ops.quick_size();
1.158 ! parser 79: //debug_printf(pool, "size=%d\n", size);
1.23 paf 80: for(int i=0; i<size; i++) {
81: Operation op;
82: op.cast=ops.quick_get(i);
1.158 ! parser 83: debug_printf(pool, "%8X\n", op.cast);
1.23 paf 84: }
85: }
86:
1.135 paf 87: int size=ops.quick_size();
1.158 ! parser 88: //debug_printf(pool, "size=%d\n", size);
1.1 paf 89: for(int i=0; i<size; i++) {
1.23 paf 90: Operation op;
91: op.cast=ops.quick_get(i);
1.1 paf 92:
1.86 paf 93: if(op.code==OP_VALUE || op.code==OP_STRING__WRITE) {
1.52 paf 94: Value *value=static_cast<Value *>(ops.quick_get(++i));
1.158 ! parser 95: debug_printf(pool,
1.133 paf 96: "%*s%s"
97: " \"%s\" %s",
98: level*4, "", opcode_name[op.code],
99: value->get_string()->cstr(), value->type());
100: continue;
1.15 paf 101: }
1.158 ! parser 102: debug_printf(pool, "%*s%s", level*4, "", opcode_name[op.code]);
1.1 paf 103:
1.109 paf 104: if(op.code==OP_CURLY_CODE__STORE_PARAM || op.code==OP_EXPR_CODE__STORE_PARAM) {
1.10 paf 105: const Array *local_ops=reinterpret_cast<const Array *>(ops.quick_get(++i));
1.158 ! parser 106: debug_dump(pool, level+1, *local_ops);
1.1 paf 107: }
108: }
109: }
1.157 parser 110: #endif
1.1 paf 111:
1.32 paf 112: void Request::execute(const Array& ops) {
1.157 parser 113: #ifdef DEBUG_EXECUTE
1.158 ! parser 114: debug_printf(pool(), "source----------------------------\n");
! 115: debug_dump(pool(), 0, ops);
! 116: debug_printf(pool(), "execution-------------------------\n");
1.157 parser 117: #endif
1.12 paf 118:
1.135 paf 119: int size=ops.quick_size();
1.158 ! parser 120: //debug_printf(pool(), "size=%d\n", size);
1.11 paf 121: for(int i=0; i<size; i++) {
1.23 paf 122: Operation op;
123: op.cast=ops.quick_get(i);
1.157 parser 124: #ifdef DEBUG_EXECUTE
1.158 ! parser 125: debug_printf(pool(), "%d:%s", stack.top_index()+1, opcode_name[op.code]);
1.157 parser 126: #endif
1.11 paf 127:
1.23 paf 128: switch(op.code) {
1.51 paf 129: // param in next instruction
1.52 paf 130: case OP_VALUE:
1.32 paf 131: {
1.52 paf 132: Value *value=static_cast<Value *>(ops.quick_get(++i));
1.157 parser 133: #ifdef DEBUG_EXECUTE
1.158 ! parser 134: debug_printf(pool(), " \"%s\" %s", value->get_string()->cstr(), value->type());
1.157 parser 135: #endif
1.52 paf 136: PUSH(value);
1.32 paf 137: break;
138: }
1.109 paf 139: case OP_CURLY_CODE__STORE_PARAM:
140: case OP_EXPR_CODE__STORE_PARAM:
1.32 paf 141: {
1.73 paf 142: VMethodFrame *frame=static_cast<VMethodFrame *>(stack.top_value());
1.65 paf 143: // code
1.32 paf 144: const Array *local_ops=reinterpret_cast<const Array *>(ops.quick_get(++i));
1.157 parser 145: #ifdef DEBUG_EXECUTE
1.158 ! parser 146: debug_printf(pool(), " (%d)\n", local_ops->size());
! 147: debug_dump(pool(), 1, *local_ops);
1.157 parser 148: #endif
1.109 paf 149: // when they evaluate expression parameter,
150: // the object expression result
151: // does not need to be written into calling frame
152: // it must go into any expressions using that parameter
1.146 paf 153: // hence, we zero junction.wcontext here, and later
154: // in .process we would test that field
1.109 paf 155: // in decision "which wwrapper to use"
1.32 paf 156: Junction& j=*NEW Junction(pool(),
1.45 paf 157: *self, 0, 0,
1.130 paf 158: root,
1.149 paf 159: rcontext,
160: op.code==OP_EXPR_CODE__STORE_PARAM?0:wcontext,
1.130 paf 161: local_ops);
1.32 paf 162:
163: Value *value=NEW VJunction(j);
1.65 paf 164:
165: // store param
1.92 paf 166: frame->store_param(frame->name(), value);
1.32 paf 167: break;
168: }
1.66 paf 169: case OP_GET_CLASS:
1.38 paf 170: {
1.130 paf 171: // maybe they do ^class:method[] call, remember the fact
1.98 paf 172: wcontext->set_somebody_entered_some_class();
173:
1.82 paf 174: const String& name=POP_NAME();
1.120 paf 175: Value *value=static_cast<Value *>(classes().get(name));
176: if(!value)
1.66 paf 177: THROW(0,0,
178: &name,
1.143 paf 179: "class is undefined");
1.66 paf 180:
1.120 paf 181: PUSH(value);
1.38 paf 182: break;
183: }
1.32 paf 184:
1.51 paf 185: // OP_WITH
1.37 paf 186: case OP_WITH_SELF:
187: {
188: PUSH(self);
189: break;
190: }
191: case OP_WITH_ROOT:
1.11 paf 192: {
1.37 paf 193: PUSH(root);
1.13 paf 194: break;
1.11 paf 195: }
1.15 paf 196: case OP_WITH_READ:
197: {
1.24 paf 198: PUSH(rcontext);
1.20 paf 199: break;
200: }
1.37 paf 201: case OP_WITH_WRITE:
1.20 paf 202: {
1.37 paf 203: PUSH(wcontext);
1.20 paf 204: break;
205: }
1.37 paf 206:
1.51 paf 207: // OTHER ACTIONS BUT WITHs
1.80 paf 208: case OP_CONSTRUCT_VALUE:
1.20 paf 209: {
1.37 paf 210: Value *value=POP();
1.82 paf 211: const String& name=POP_NAME();
1.37 paf 212: Value *ncontext=POP();
1.81 paf 213: ncontext->put_element(name, value);
1.37 paf 214: value->set_name(name);
1.15 paf 215: break;
216: }
1.80 paf 217: case OP_CONSTRUCT_EXPR:
218: {
219: Value *value=POP();
1.82 paf 220: const String& name=POP_NAME();
1.80 paf 221: Value *ncontext=POP();
1.128 paf 222: ncontext->put_element(name, value->as_expr_result());
1.80 paf 223: value->set_name(name);
224: break;
225: }
1.108 paf 226: case OP_WRITE_VALUE:
1.13 paf 227: {
1.24 paf 228: Value *value=POP();
1.92 paf 229: write_assign_lang(*value);
1.150 paf 230:
231: // forget the fact they've entered some ^object.method[].
232: // see OP_GET_ELEMENT
233: wcontext->clear_somebody_entered_some_object();
1.86 paf 234: break;
235: }
1.108 paf 236: case OP_WRITE_EXPR_RESULT:
237: {
238: Value *value=POP();
1.128 paf 239: write_expr_result(*value->as_expr_result());
1.108 paf 240: break;
241: }
1.86 paf 242: case OP_STRING__WRITE:
243: {
244: VString *vstring=static_cast<VString *>(ops.quick_get(++i));
1.157 parser 245: #ifdef DEBUG_EXECUTE
1.158 ! parser 246: debug_printf(pool(), " \"%s\"", vstring->string().cstr());
1.157 parser 247: #endif
1.122 paf 248: write_no_lang(vstring->string());
1.13 paf 249: break;
1.14 paf 250: }
1.13 paf 251:
1.15 paf 252: case OP_GET_ELEMENT:
1.11 paf 253: {
1.150 paf 254: // maybe they do ^object.method[] call, remember the fact
255: wcontext->inc_somebody_entered_some_object();
256:
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
303: value=NEW VUnknown(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
324: NEW VUnknown(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());
418: (*method.native_code)(
419: *this,
420: frame->name(), frame->numbered_params()); // execute it
421: } else // parser code
422: execute(*method.parser_code); // execute it
423: else
424: THROW(0, 0,
425: &frame->name(),
426: "is not allowed to be called %s",
427: call_type==Method::CT_STATIC?"statically":"dynamically");
428:
1.47 paf 429: }
1.36 paf 430: Value *value=wcontext->result();
1.45 paf 431:
432: wcontext=static_cast<WContext *>(POP());
433: rcontext=POP();
434: root=POP();
435: self=static_cast<VAliased *>(POP());
1.62 paf 436:
1.61 paf 437: PUSH(value);
1.157 parser 438: #ifdef DEBUG_EXECUTE
1.158 ! parser 439: debug_printf(pool(), "<-returned");
1.157 parser 440: #endif
1.49 paf 441: break;
442: }
443:
1.55 paf 444: // expression ops: unary
445: case OP_NEG:
446: {
447: Value *operand=POP();
1.128 paf 448: Value *value=NEW VDouble(pool(), -operand->as_double());
1.55 paf 449: PUSH(value);
450: break;
451: }
452: case OP_INV:
453: {
454: Value *operand=POP();
1.155 parser 455: Value *value=NEW VDouble(pool(), ~operand->as_int());
1.55 paf 456: PUSH(value);
457: break;
458: }
459: case OP_NOT:
460: {
461: Value *operand=POP();
1.128 paf 462: Value *value=NEW VBool(pool(), !operand->as_bool());
1.55 paf 463: PUSH(value);
464: break;
465: }
1.62 paf 466: case OP_DEF:
467: {
468: Value *operand=POP();
1.128 paf 469: Value *value=NEW VBool(pool(), operand->is_defined());
1.62 paf 470: PUSH(value);
471: break;
472: }
473: case OP_IN:
474: {
475: Value *operand=POP();
1.110 paf 476: const char *path=operand->as_string().cstr();
1.151 paf 477: Value *value=NEW VBool(pool(),
478: info.uri && strncmp(path, info.uri, strlen(path))==0);
1.62 paf 479: PUSH(value);
480: break;
481: }
482: case OP_FEXISTS:
483: {
484: Value *operand=POP();
1.127 paf 485: Value *value=NEW VBool(pool(),
486: file_readable(absolute(operand->as_string())));
1.148 paf 487: PUSH(value);
488: break;
489: }
490: case OP_DEXISTS:
491: {
492: Value *operand=POP();
493: Value *value=NEW VBool(pool(),
494: dir_readable(absolute(operand->as_string())));
1.62 paf 495: PUSH(value);
496: break;
497: }
1.55 paf 498:
499: // expression ops: binary
500: case OP_SUB:
1.53 paf 501: {
1.61 paf 502: Value *b=POP(); Value *a=POP();
1.128 paf 503: Value *value=NEW VDouble(pool(), a->as_double() - b->as_double());
1.53 paf 504: PUSH(value);
505: break;
506: }
1.55 paf 507: case OP_ADD:
1.53 paf 508: {
1.61 paf 509: Value *b=POP(); Value *a=POP();
1.128 paf 510: Value *value=NEW VDouble(pool(), a->as_double() + b->as_double());
1.53 paf 511: PUSH(value);
512: break;
513: }
1.49 paf 514: case OP_MUL:
515: {
1.61 paf 516: Value *b=POP(); Value *a=POP();
1.128 paf 517: Value *value=NEW VDouble(pool(), a->as_double() * b->as_double());
1.53 paf 518: PUSH(value);
519: break;
520: }
521: case OP_DIV:
522: {
1.61 paf 523: Value *b=POP(); Value *a=POP();
1.128 paf 524: Value *value=NEW VDouble(pool(), a->as_double() / b->as_double());
1.54 paf 525: PUSH(value);
526: break;
527: }
1.55 paf 528: case OP_MOD:
529: {
1.61 paf 530: Value *b=POP(); Value *a=POP();
1.78 paf 531: Value *value=NEW VDouble(pool(),
1.155 parser 532: a->as_int() %
533: b->as_int());
1.55 paf 534: PUSH(value);
535: break;
536: }
537: case OP_BIN_AND:
1.54 paf 538: {
1.61 paf 539: Value *b=POP(); Value *a=POP();
1.78 paf 540: Value *value=NEW VDouble(pool(),
1.155 parser 541: a->as_int() &
542: b->as_int());
1.54 paf 543: PUSH(value);
544: break;
545: }
1.55 paf 546: case OP_BIN_OR:
1.54 paf 547: {
1.61 paf 548: Value *b=POP(); Value *a=POP();
1.78 paf 549: Value *value=NEW VDouble(pool(),
1.155 parser 550: a->as_int() |
551: b->as_int());
1.55 paf 552: PUSH(value);
553: break;
554: }
1.56 paf 555: case OP_BIN_XOR:
556: {
1.61 paf 557: Value *b=POP(); Value *a=POP();
1.78 paf 558: Value *value=NEW VDouble(pool(),
1.155 parser 559: a->as_int() ^
560: b->as_int());
1.56 paf 561: PUSH(value);
562: break;
563: }
1.55 paf 564: case OP_LOG_AND:
565: {
1.61 paf 566: Value *b=POP(); Value *a=POP();
1.128 paf 567: Value *value=NEW VBool(pool(), a->as_bool() && b->as_bool());
1.55 paf 568: PUSH(value);
569: break;
570: }
571: case OP_LOG_OR:
572: {
1.61 paf 573: Value *b=POP(); Value *a=POP();
1.128 paf 574: Value *value=NEW VBool(pool(), a->as_bool() || b->as_bool());
1.56 paf 575: PUSH(value);
576: break;
577: }
578: case OP_LOG_XOR:
579: {
1.61 paf 580: Value *b=POP(); Value *a=POP();
1.128 paf 581: Value *value=NEW VBool(pool(), a->as_bool() ^ b->as_bool());
1.55 paf 582: PUSH(value);
583: break;
584: }
585: case OP_NUM_LT:
586: {
1.61 paf 587: Value *b=POP(); Value *a=POP();
1.128 paf 588: Value *value=NEW VBool(pool(), a->as_double() < b->as_double());
1.55 paf 589: PUSH(value);
590: break;
591: }
592: case OP_NUM_GT:
593: {
1.61 paf 594: Value *b=POP(); Value *a=POP();
1.128 paf 595: Value *value=NEW VBool(pool(), a->as_double() > b->as_double());
1.55 paf 596: PUSH(value);
597: break;
598: }
599: case OP_NUM_LE:
600: {
1.61 paf 601: Value *b=POP(); Value *a=POP();
1.128 paf 602: Value *value=NEW VBool(pool(), a->as_double() <= b->as_double());
1.55 paf 603: PUSH(value);
604: break;
605: }
606: case OP_NUM_GE:
607: {
1.61 paf 608: Value *b=POP(); Value *a=POP();
1.128 paf 609: Value *value=NEW VBool(pool(), a->as_double() >= b->as_double());
1.55 paf 610: PUSH(value);
611: break;
612: }
613: case OP_NUM_EQ:
614: {
1.61 paf 615: Value *b=POP(); Value *a=POP();
1.128 paf 616: Value *value=NEW VBool(pool(), a->as_double() == b->as_double());
1.55 paf 617: PUSH(value);
618: break;
619: }
620: case OP_NUM_NE:
621: {
1.61 paf 622: Value *b=POP(); Value *a=POP();
1.128 paf 623: Value *value=NEW VBool(pool(), a->as_double() != b->as_double());
1.54 paf 624: PUSH(value);
625: break;
626: }
1.58 paf 627: case OP_STR_LT:
628: {
1.61 paf 629: Value *b=POP(); Value *a=POP();
1.78 paf 630: Value *value=NEW VBool(pool(), a->as_string() < b->as_string());
1.58 paf 631: PUSH(value);
632: break;
633: }
634: case OP_STR_GT:
635: {
1.61 paf 636: Value *b=POP(); Value *a=POP();
1.78 paf 637: Value *value=NEW VBool(pool(), a->as_string() > b->as_string());
1.58 paf 638: PUSH(value);
639: break;
640: }
1.55 paf 641: case OP_STR_LE:
1.58 paf 642: {
1.61 paf 643: Value *b=POP(); Value *a=POP();
1.78 paf 644: Value *value=NEW VBool(pool(), a->as_string() <= b->as_string());
1.58 paf 645: PUSH(value);
646: break;
647: }
1.55 paf 648: case OP_STR_GE:
1.54 paf 649: {
1.61 paf 650: Value *b=POP(); Value *a=POP();
1.78 paf 651: Value *value=NEW VBool(pool(), a->as_string() >= b->as_string());
1.58 paf 652: PUSH(value);
653: break;
654: }
655: case OP_STR_EQ:
656: {
1.61 paf 657: Value *b=POP(); Value *a=POP();
1.78 paf 658: Value *value=NEW VBool(pool(), a->as_string() == b->as_string());
1.58 paf 659: PUSH(value);
660: break;
661: }
662: case OP_STR_NE:
663: {
1.61 paf 664: Value *b=POP(); Value *a=POP();
1.78 paf 665: Value *value=NEW VBool(pool(), a->as_string() != b->as_string());
1.103 paf 666: PUSH(value);
667: break;
668: }
669: case OP_IS:
670: {
671: Value *b=POP(); Value *a=POP();
672: Value *value=NEW VBool(pool(), b->as_string() == a->type());
1.49 paf 673: PUSH(value);
1.28 paf 674: break;
675: }
676:
1.11 paf 677: default:
1.67 paf 678: THROW(0,0,
679: 0,
1.139 paf 680: "invalid opcode %d", op.code);
1.11 paf 681: }
682: }
1.1 paf 683: }
1.17 paf 684:
685: Value *Request::get_element() {
1.82 paf 686: const String& name=POP_NAME();
1.24 paf 687: Value *ncontext=POP();
1.147 paf 688: Value *value;
689: if(Method* method=OP.get_method(name)) { // operator?
690: // as if that method were in self and we have normal dynamic method here
691: Junction& junction=*NEW Junction(pool(),
692: *self, self->get_class(), method, 0,0,0,0);
693: value=NEW VJunction(junction);
694: } else
695: value=ncontext->get_element(name);
1.76 paf 696: if(value)
1.92 paf 697: value=&process(*value, &name); // process possible code-junction
1.76 paf 698: else {
699: value=NEW VUnknown(pool());
700: value->set_name(name);
701: }
1.63 paf 702:
1.17 paf 703: return value;
1.34 paf 704: }
1.70 paf 705:
1.116 paf 706: /**
707: intercept_string:
708: - true:
709: they want result=string value,
710: possible object result goes to wcontext
711: - false:
712: they want any result[string|object]
713: nothing goes to wcontext.
1.125 paf 714: used in @c (expression) params evaluation
1.116 paf 715: */
1.92 paf 716: Value& Request::process(Value& value, const String *name, bool intercept_string) {
1.91 paf 717: Value *result;
1.70 paf 718: Junction *junction=value.get_junction();
719: if(junction && junction->code) { // is it a code-junction?
1.92 paf 720: // process it
1.157 parser 721: #ifdef DEBUG_EXECUTE
1.158 ! parser 722: debug_printf(pool(), "ja->\n");
1.157 parser 723: #endif
1.70 paf 724: PUSH(self);
725: PUSH(root);
726: PUSH(rcontext);
1.129 paf 727: PUSH(wcontext);
1.70 paf 728:
1.71 paf 729: WContext *frame;
1.109 paf 730: // for expression method params
731: // wcontext is set 0
732: // using the fact in decision "which wwrapper to use"
733: bool using_code_frame=intercept_string && junction->wcontext;
734: if(using_code_frame) {
1.71 paf 735: // almost plain wwrapper about junction wcontext,
736: // BUT intercepts string writes
737: frame=NEW VCodeFrame(pool(), *junction->wcontext);
738: } else {
739: // plain wwrapper
1.108 paf 740: frame=NEW WWrapper(pool(), 0/*empty*/, false/*not constructing*/);
1.71 paf 741: }
742:
743: wcontext=frame;
1.70 paf 744: self=&junction->self;
745: root=junction->root;
746: rcontext=junction->rcontext;
747: execute(*junction->code);
1.109 paf 748: if(using_code_frame) {
1.71 paf 749: // CodeFrame soul:
750: // string writes were intercepted
751: // returning them as the result of getting code-junction
752: result=NEW VString(*frame->get_string());
753: } else
754: result=frame->result();
1.70 paf 755:
756: wcontext=static_cast<WContext *>(POP());
757: rcontext=POP();
758: root=POP();
759: self=static_cast<VAliased *>(POP());
760:
1.157 parser 761: #ifdef DEBUG_EXECUTE
1.158 ! parser 762: debug_printf(pool(), "<-ja returned");
1.157 parser 763: #endif
1.70 paf 764: } else
1.91 paf 765: result=&value;
766:
767: if(name)
768: result->set_name(*name);
769: return *result;
1.85 paf 770: }
771:
1.114 paf 772: const String *Request::execute_method(Value& aself, const Method& method, bool return_cstr) {
1.99 paf 773: PUSH(self);
774: PUSH(root);
775: PUSH(rcontext);
776: PUSH(wcontext);
777:
778: // initialize contexts
779: root=rcontext=self=&aself;
1.138 paf 780: wcontext=NEW WWrapper(pool(), &aself, false /*not constructing*/);
1.99 paf 781:
782: // execute!
783: execute(*method.parser_code);
784:
785: // result
1.114 paf 786: const String *result;
1.99 paf 787: if(return_cstr)
1.114 paf 788: result=&wcontext->as_string();
1.99 paf 789: else
790: result=0; // ignore result
791:
792: wcontext=static_cast<WContext *>(POP());
793: rcontext=POP();
794: root=POP();
795: self=static_cast<VAliased *>(POP());
796:
797: // return
798: return result;
799: }
800:
1.114 paf 801: const String *Request::execute_method(Value& aself,
1.99 paf 802: const String& method_name, bool return_cstr) {
803: if(Value *value=aself.get_element(method_name))
804: if(Junction *junction=value->get_junction())
805: if(const Method *method=junction->method)
806: return execute_method(aself, *method, return_cstr);
807:
1.85 paf 808: return 0;
1.70 paf 809: }