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1.1 paf 1: /*
1.88 paf 2: Parser
3: Copyright (c) 2001 ArtLebedev Group (http://www.artlebedev.com)
1.89 ! paf 4: Author: Alexander Petrosyan <paf@design.ru> (http://design.ru/paf)
1.88 paf 5:
1.89 ! paf 6: $Id: execute.C,v 1.88 2001/03/10 16:34:39 paf Exp $
1.1 paf 7: */
8:
1.8 paf 9: #include "pa_array.h"
1.1 paf 10: #include "code.h"
1.11 paf 11: #include "pa_request.h"
1.15 paf 12: #include "pa_vstring.h"
1.22 paf 13: #include "pa_vhash.h"
1.23 paf 14: #include "pa_vunknown.h"
1.34 paf 15: #include "pa_vcframe.h"
16: #include "pa_vmframe.h"
1.38 paf 17: #include "pa_vobject.h"
1.49 paf 18: #include "pa_vdouble.h"
1.54 paf 19: #include "pa_vbool.h"
1.1 paf 20:
21: #include <stdio.h>
22:
1.24 paf 23: #define PUSH(value) stack.push(value)
24: #define POP() static_cast<Value *>(stack.pop())
1.32 paf 25: #define POP_NAME() static_cast<Value *>(stack.pop())->as_string()
1.24 paf 26:
1.11 paf 27:
1.1 paf 28: char *opcode_name[]={
1.49 paf 29: // literals
1.66 paf 30: "VALUE", "CODE__STORE_PARAM",
1.49 paf 31:
32: // actions
1.51 paf 33: "WITH_SELF", "WITH_ROOT", "WITH_READ", "WITH_WRITE",
1.66 paf 34: "GET_CLASS",
1.80 paf 35: "CONSTRUCT_VALUE", "CONSTRUCT_DOUBLE",
1.86 paf 36: "WRITE", "STRING__WRITE",
1.18 paf 37: "GET_ELEMENT", "GET_ELEMENT__WRITE",
1.1 paf 38: "CREATE_EWPOOL", "REDUCE_EWPOOL",
39: "CREATE_RWPOOL", "REDUCE_RWPOOL",
1.49 paf 40: "CREATE_SWPOOL", "REDUCE_SWPOOL",
1.1 paf 41: "GET_METHOD_FRAME",
42: "STORE_PARAM",
1.51 paf 43: "CALL",
1.49 paf 44:
45: // expression ops: unary
46: "NEG", "INV", "NOT", "DEF", "IN", "FEXISTS",
47: // expression ops: binary
48: "SUB", "ADD", "MUL", "DIV", "MOD",
1.56 paf 49: "BIN_AND", "BIN_OR", "BIN_XOR",
50: "LOG_AND", "LOG_OR", "LOG_XOR",
1.49 paf 51: "NUM_LT", "NUM_GT", "NUM_LE", "NUM_GE", "NUM_EQ", "NUM_NE",
1.55 paf 52: "STR_LT", "STR_GT", "STR_LE", "STR_GE", "STR_EQ", "STR_NE"
1.1 paf 53: };
54:
1.9 paf 55: void dump(int level, const Array& ops) {
1.23 paf 56: if(0){
57: int size=ops.size();
1.46 paf 58: //fprintf(stderr, "size=%d\n", size);
1.23 paf 59: for(int i=0; i<size; i++) {
60: Operation op;
61: op.cast=ops.quick_get(i);
1.46 paf 62: fprintf(stderr, "%8X\n", op.cast);
1.23 paf 63: }
64: }
65:
1.9 paf 66: int size=ops.size();
1.46 paf 67: //fprintf(stderr, "size=%d\n", size);
1.1 paf 68: for(int i=0; i<size; i++) {
1.23 paf 69: Operation op;
70: op.cast=ops.quick_get(i);
1.46 paf 71: fprintf(stderr, "%*s%s", level*4, "", opcode_name[op.code]);
1.1 paf 72:
1.86 paf 73: if(op.code==OP_VALUE || op.code==OP_STRING__WRITE) {
1.52 paf 74: Value *value=static_cast<Value *>(ops.quick_get(++i));
75: fprintf(stderr, " \"%s\" %s", value->get_string()->cstr(), value->type());
1.15 paf 76: }
1.46 paf 77: fprintf(stderr, "\n");
1.1 paf 78:
1.65 paf 79: if(op.code==OP_CODE__STORE_PARAM) {
1.10 paf 80: const Array *local_ops=reinterpret_cast<const Array *>(ops.quick_get(++i));
1.9 paf 81: dump(level+1, *local_ops);
1.1 paf 82: }
83: }
1.60 paf 84: fflush(stderr);
1.1 paf 85: }
86:
1.32 paf 87: void Request::execute(const Array& ops) {
1.30 paf 88: if(1) {
1.51 paf 89: fputs("source----------------------------\n", stderr);
1.12 paf 90: dump(0, ops);
1.51 paf 91: fputs("execution-------------------------\n", stderr);
1.12 paf 92: }
93:
1.11 paf 94: int size=ops.size();
1.46 paf 95: //fprintf(stderr, "size=%d\n", size);
1.11 paf 96: for(int i=0; i<size; i++) {
1.23 paf 97: Operation op;
98: op.cast=ops.quick_get(i);
1.80 paf 99: fprintf(stderr, "%d:%s", stack.top_index()+1, opcode_name[op.code]); fflush(stderr);
1.11 paf 100:
1.23 paf 101: switch(op.code) {
1.51 paf 102: // param in next instruction
1.52 paf 103: case OP_VALUE:
1.32 paf 104: {
1.52 paf 105: Value *value=static_cast<Value *>(ops.quick_get(++i));
106: fprintf(stderr, " \"%s\" %s", value->get_string()->cstr(), value->type());
107: PUSH(value);
1.32 paf 108: break;
109: }
1.65 paf 110: case OP_CODE__STORE_PARAM:
1.32 paf 111: {
1.73 paf 112: VMethodFrame *frame=static_cast<VMethodFrame *>(stack.top_value());
1.65 paf 113: // code
1.32 paf 114: const Array *local_ops=reinterpret_cast<const Array *>(ops.quick_get(++i));
1.46 paf 115: fprintf(stderr, " (%d)\n", local_ops->size());
1.38 paf 116: dump(1, *local_ops);
1.63 paf 117:
1.32 paf 118: Junction& j=*NEW Junction(pool(),
1.45 paf 119: *self, 0, 0,
1.64 paf 120: root, frame, frame, local_ops);
1.32 paf 121:
122: Value *value=NEW VJunction(j);
1.65 paf 123:
124: // store param
125: frame->store_param(value);
1.32 paf 126: break;
127: }
1.66 paf 128: case OP_GET_CLASS:
1.38 paf 129: {
1.82 paf 130: const String& name=POP_NAME();
1.66 paf 131: VClass *vclass=static_cast<VClass *>(classes().get(name));
132: if(!vclass)
133: THROW(0,0,
134: &name,
135: ": undefined class");
136:
137: PUSH(vclass);
1.38 paf 138: break;
139: }
1.32 paf 140:
1.51 paf 141: // OP_WITH
1.37 paf 142: case OP_WITH_SELF:
143: {
144: PUSH(self);
145: break;
146: }
147: case OP_WITH_ROOT:
1.11 paf 148: {
1.37 paf 149: PUSH(root);
1.13 paf 150: break;
1.11 paf 151: }
1.15 paf 152: case OP_WITH_READ:
153: {
1.24 paf 154: PUSH(rcontext);
1.20 paf 155: break;
156: }
1.37 paf 157: case OP_WITH_WRITE:
1.20 paf 158: {
1.37 paf 159: PUSH(wcontext);
1.20 paf 160: break;
161: }
1.37 paf 162:
1.51 paf 163: // OTHER ACTIONS BUT WITHs
1.80 paf 164: case OP_CONSTRUCT_VALUE:
1.20 paf 165: {
1.37 paf 166: Value *value=POP();
1.82 paf 167: const String& name=POP_NAME();
1.37 paf 168: Value *ncontext=POP();
1.81 paf 169: ncontext->put_element(name, value);
1.37 paf 170: value->set_name(name);
1.15 paf 171: break;
172: }
1.80 paf 173: case OP_CONSTRUCT_EXPR:
174: {
175: Value *value=POP();
1.82 paf 176: const String& name=POP_NAME();
1.80 paf 177: Value *ncontext=POP();
1.81 paf 178: ncontext->put_element(name, value->get_expr_result());
1.80 paf 179: value->set_name(name);
180: break;
181: }
1.18 paf 182: case OP_WRITE:
1.13 paf 183: {
1.24 paf 184: Value *value=POP();
1.83 paf 185: write(*value);
1.86 paf 186: break;
187: }
188: case OP_STRING__WRITE:
189: {
190: VString *vstring=static_cast<VString *>(ops.quick_get(++i));
191: fprintf(stderr, " \"%s\"", vstring->value().cstr());
192: write(vstring->value());
1.13 paf 193: break;
1.14 paf 194: }
1.13 paf 195:
1.15 paf 196: case OP_GET_ELEMENT:
1.11 paf 197: {
1.17 paf 198: Value *value=get_element();
1.24 paf 199: PUSH(value);
1.17 paf 200: break;
201: }
202:
1.18 paf 203: case OP_GET_ELEMENT__WRITE:
1.17 paf 204: {
205: Value *value=get_element();
1.83 paf 206: write(*value);
1.17 paf 207: break;
208: }
209:
1.32 paf 210:
1.17 paf 211: case OP_CREATE_EWPOOL:
212: {
1.24 paf 213: PUSH(wcontext);
1.43 paf 214: wcontext=NEW WWrapper(pool(), 0 /* empty */, true /* constructing */);
1.17 paf 215: break;
216: }
217: case OP_REDUCE_EWPOOL:
218: {
1.36 paf 219: Value *value=wcontext->result();
1.25 paf 220: wcontext=static_cast<WContext *>(POP());
1.24 paf 221: PUSH(value);
1.13 paf 222: break;
1.15 paf 223: }
1.13 paf 224:
1.26 paf 225: case OP_CREATE_RWPOOL:
226: {
227: Value *ncontext=POP();
228: PUSH(rcontext);
229: rcontext=ncontext;
230: PUSH(wcontext);
1.43 paf 231: wcontext=NEW WWrapper(pool(), ncontext, false /* not constructing */);
1.26 paf 232: break;
233: }
234: case OP_REDUCE_RWPOOL:
235: {
1.82 paf 236: const String *string=wcontext->get_string();
1.80 paf 237: Value *value;
238: if(string)
239: value=NEW VString(*string);
240: else
241: value=NEW VUnknown(pool());
1.26 paf 242: wcontext=static_cast<WContext *>(POP());
243: rcontext=POP();
244: PUSH(value);
245: break;
246: }
1.49 paf 247: case OP_CREATE_SWPOOL:
248: {
249: PUSH(wcontext);
1.50 paf 250: wcontext=NEW WWrapper(pool(), 0 /* empty */, false /* not constructing */);
1.49 paf 251: break;
252: }
253: case OP_REDUCE_SWPOOL:
254: {
255: // from "$a $b" part of expression taking only string value,
256: // ignoring any other content of wcontext
1.82 paf 257: const String *string=wcontext->get_string();
1.80 paf 258: Value *value;
259: if(string)
260: value=NEW VString(*string);
261: else
262: NEW VUnknown(pool());
1.50 paf 263: wcontext=static_cast<WContext *>(POP());
1.49 paf 264: PUSH(value);
265: break;
266: }
267:
1.51 paf 268: // CALL
1.28 paf 269: case OP_GET_METHOD_FRAME:
270: {
1.32 paf 271: Value *value=POP();
1.70 paf 272: // info: this one's always method-junction, not a code-junction
1.32 paf 273: Junction *junction=value->get_junction();
1.31 paf 274: if(!junction)
1.28 paf 275: THROW(0,0,
1.42 paf 276: &value->name(),
1.39 paf 277: "type is '%s', can not call it (must be method or junction)",
1.38 paf 278: value->type());
1.70 paf 279:
1.34 paf 280: VMethodFrame *frame=NEW VMethodFrame(pool(), *junction);
1.63 paf 281: frame->set_name(junction->self.name());
1.28 paf 282: PUSH(frame);
283: break;
284: }
285: case OP_STORE_PARAM:
286: {
287: Value *value=POP();
1.73 paf 288: VMethodFrame *frame=static_cast<VMethodFrame *>(stack.top_value());
1.28 paf 289: frame->store_param(value);
1.29 paf 290: break;
291: }
292:
293: case OP_CALL:
294: {
1.46 paf 295: fprintf(stderr, "->\n");
1.34 paf 296: VMethodFrame *frame=static_cast<VMethodFrame *>(POP());
297: frame->fill_unspecified_params();
1.45 paf 298: PUSH(self);
299: PUSH(root);
300: PUSH(rcontext);
301: PUSH(wcontext);
302:
1.38 paf 303: VClass *called_class=frame->junction.self.get_class();
1.74 paf 304: // is context object or class & is it my class or my parent's class?
305: VClass *read_class=rcontext->get_class();
306: if(read_class && read_class->is_or_derived_from(*called_class)) // yes
307: self=rcontext; // class dynamic call
1.75 paf 308: else // no, not me or relative of mine (total stranger)
309: if(wcontext->constructing()) { // constructing?
310: // yes, constructor call: $some(^class:method(..))
1.80 paf 311: self=NEW VObject(pool(), *called_class);
1.83 paf 312: frame->write(*self,
313: String::Untaint_lang::NO // not used, always an object, not string
314: );
1.75 paf 315: } else
316: self=&frame->junction.self; // no, static or simple dynamic call
317:
1.45 paf 318: frame->set_self(*self);
1.29 paf 319: root=rcontext=wcontext=frame;
1.47 paf 320: {
1.48 paf 321: // take object or class from any wrappers
322: VAliased *aliased=self->get_aliased();
323: // substitute class alias to the class they are called AS
1.47 paf 324: Temp_alias temp_alias(*aliased, *frame->junction.vclass);
1.68 paf 325:
1.69 paf 326: Method& method=*frame->junction.method;
1.80 paf 327: if(method.native_code) { // native code?
328: method.check_actual_numbered_params(frame->numbered_params());
1.70 paf 329: (*method.native_code)(*this, frame->numbered_params()); // execute it
1.80 paf 330: } else // parser code
1.69 paf 331: execute(*method.parser_code); // execute it
1.47 paf 332: }
1.36 paf 333: Value *value=wcontext->result();
1.45 paf 334:
335: wcontext=static_cast<WContext *>(POP());
336: rcontext=POP();
337: root=POP();
338: self=static_cast<VAliased *>(POP());
1.62 paf 339:
1.61 paf 340: PUSH(value);
1.46 paf 341: fprintf(stderr, "<-returned");
1.49 paf 342: break;
343: }
344:
1.55 paf 345: // expression ops: unary
346: case OP_NEG:
347: {
348: Value *operand=POP();
1.80 paf 349: Value *value=NEW VDouble(pool(), -operand->get_double());
1.55 paf 350: PUSH(value);
351: break;
352: }
353: case OP_INV:
354: {
355: Value *operand=POP();
1.80 paf 356: Value *value=NEW VDouble(pool(), ~static_cast<int>(operand->get_double()));
1.55 paf 357: PUSH(value);
358: break;
359: }
360: case OP_NOT:
361: {
362: Value *operand=POP();
1.78 paf 363: Value *value=NEW VBool(pool(), !operand->get_bool());
1.55 paf 364: PUSH(value);
365: break;
366: }
1.62 paf 367: case OP_DEF:
368: {
369: Value *operand=POP();
1.78 paf 370: Value *value=NEW VBool(pool(), operand->get_defined());
1.62 paf 371: PUSH(value);
372: break;
373: }
374: case OP_IN:
375: {
376: Value *operand=POP();
1.78 paf 377: Value *value=NEW VBool(pool(), true/*TODO*/);
1.62 paf 378: PUSH(value);
379: break;
380: }
381: case OP_FEXISTS:
382: {
383: Value *operand=POP();
1.78 paf 384: Value *value=NEW VBool(pool(), true/*TODO*/);
1.62 paf 385: PUSH(value);
386: break;
387: }
1.55 paf 388:
389: // expression ops: binary
390: case OP_SUB:
1.53 paf 391: {
1.61 paf 392: Value *b=POP(); Value *a=POP();
1.80 paf 393: Value *value=NEW VDouble(pool(), a->get_double() - b->get_double());
1.53 paf 394: PUSH(value);
395: break;
396: }
1.55 paf 397: case OP_ADD:
1.53 paf 398: {
1.61 paf 399: Value *b=POP(); Value *a=POP();
1.80 paf 400: Value *value=NEW VDouble(pool(), a->get_double() + b->get_double());
1.53 paf 401: PUSH(value);
402: break;
403: }
1.49 paf 404: case OP_MUL:
405: {
1.61 paf 406: Value *b=POP(); Value *a=POP();
1.80 paf 407: Value *value=NEW VDouble(pool(), a->get_double() * b->get_double());
1.53 paf 408: PUSH(value);
409: break;
410: }
411: case OP_DIV:
412: {
1.61 paf 413: Value *b=POP(); Value *a=POP();
1.80 paf 414: Value *value=NEW VDouble(pool(), a->get_double() / b->get_double());
1.54 paf 415: PUSH(value);
416: break;
417: }
1.55 paf 418: case OP_MOD:
419: {
1.61 paf 420: Value *b=POP(); Value *a=POP();
1.78 paf 421: Value *value=NEW VDouble(pool(),
1.55 paf 422: static_cast<int>(a->get_double()) %
1.78 paf 423: static_cast<int>(b->get_double()));
1.55 paf 424: PUSH(value);
425: break;
426: }
427: case OP_BIN_AND:
1.54 paf 428: {
1.61 paf 429: Value *b=POP(); Value *a=POP();
1.78 paf 430: Value *value=NEW VDouble(pool(),
1.55 paf 431: static_cast<int>(a->get_double()) &
1.78 paf 432: static_cast<int>(b->get_double()));
1.54 paf 433: PUSH(value);
434: break;
435: }
1.55 paf 436: case OP_BIN_OR:
1.54 paf 437: {
1.61 paf 438: Value *b=POP(); Value *a=POP();
1.78 paf 439: Value *value=NEW VDouble(pool(),
1.55 paf 440: static_cast<int>(a->get_double()) |
1.78 paf 441: static_cast<int>(b->get_double()));
1.55 paf 442: PUSH(value);
443: break;
444: }
1.56 paf 445: case OP_BIN_XOR:
446: {
1.61 paf 447: Value *b=POP(); Value *a=POP();
1.78 paf 448: Value *value=NEW VDouble(pool(),
1.56 paf 449: static_cast<int>(a->get_double()) ^
1.78 paf 450: static_cast<int>(b->get_double()));
1.56 paf 451: PUSH(value);
452: break;
453: }
1.55 paf 454: case OP_LOG_AND:
455: {
1.61 paf 456: Value *b=POP(); Value *a=POP();
1.78 paf 457: Value *value=NEW VBool(pool(), a->get_bool() && b->get_bool());
1.55 paf 458: PUSH(value);
459: break;
460: }
461: case OP_LOG_OR:
462: {
1.61 paf 463: Value *b=POP(); Value *a=POP();
1.78 paf 464: Value *value=NEW VBool(pool(), a->get_bool() || b->get_bool());
1.56 paf 465: PUSH(value);
466: break;
467: }
468: case OP_LOG_XOR:
469: {
1.61 paf 470: Value *b=POP(); Value *a=POP();
1.78 paf 471: Value *value=NEW VBool(pool(), a->get_bool() ^ b->get_bool());
1.55 paf 472: PUSH(value);
473: break;
474: }
475: case OP_NUM_LT:
476: {
1.61 paf 477: Value *b=POP(); Value *a=POP();
1.78 paf 478: Value *value=NEW VBool(pool(), a->get_double() < b->get_double());
1.55 paf 479: PUSH(value);
480: break;
481: }
482: case OP_NUM_GT:
483: {
1.61 paf 484: Value *b=POP(); Value *a=POP();
1.78 paf 485: Value *value=NEW VBool(pool(), a->get_double() > b->get_double());
1.55 paf 486: PUSH(value);
487: break;
488: }
489: case OP_NUM_LE:
490: {
1.61 paf 491: Value *b=POP(); Value *a=POP();
1.78 paf 492: Value *value=NEW VBool(pool(), a->get_double() <= b->get_double());
1.55 paf 493: PUSH(value);
494: break;
495: }
496: case OP_NUM_GE:
497: {
1.61 paf 498: Value *b=POP(); Value *a=POP();
1.78 paf 499: Value *value=NEW VBool(pool(), a->get_double() >= b->get_double());
1.55 paf 500: PUSH(value);
501: break;
502: }
503: case OP_NUM_EQ:
504: {
1.61 paf 505: Value *b=POP(); Value *a=POP();
1.78 paf 506: Value *value=NEW VBool(pool(), a->get_double() == b->get_double());
1.55 paf 507: PUSH(value);
508: break;
509: }
510: case OP_NUM_NE:
511: {
1.61 paf 512: Value *b=POP(); Value *a=POP();
1.78 paf 513: Value *value=NEW VBool(pool(), a->get_double() != b->get_double());
1.54 paf 514: PUSH(value);
515: break;
516: }
1.58 paf 517: case OP_STR_LT:
518: {
1.61 paf 519: Value *b=POP(); Value *a=POP();
1.78 paf 520: Value *value=NEW VBool(pool(), a->as_string() < b->as_string());
1.58 paf 521: PUSH(value);
522: break;
523: }
524: case OP_STR_GT:
525: {
1.61 paf 526: Value *b=POP(); Value *a=POP();
1.78 paf 527: Value *value=NEW VBool(pool(), a->as_string() > b->as_string());
1.58 paf 528: PUSH(value);
529: break;
530: }
1.55 paf 531: case OP_STR_LE:
1.58 paf 532: {
1.61 paf 533: Value *b=POP(); Value *a=POP();
1.78 paf 534: Value *value=NEW VBool(pool(), a->as_string() <= b->as_string());
1.58 paf 535: PUSH(value);
536: break;
537: }
1.55 paf 538: case OP_STR_GE:
1.54 paf 539: {
1.61 paf 540: Value *b=POP(); Value *a=POP();
1.78 paf 541: Value *value=NEW VBool(pool(), a->as_string() >= b->as_string());
1.58 paf 542: PUSH(value);
543: break;
544: }
545: case OP_STR_EQ:
546: {
1.61 paf 547: Value *b=POP(); Value *a=POP();
1.78 paf 548: Value *value=NEW VBool(pool(), a->as_string() == b->as_string());
1.58 paf 549: PUSH(value);
550: break;
551: }
552: case OP_STR_NE:
553: {
1.61 paf 554: Value *b=POP(); Value *a=POP();
1.78 paf 555: Value *value=NEW VBool(pool(), a->as_string() != b->as_string());
1.49 paf 556: PUSH(value);
1.28 paf 557: break;
558: }
559:
1.11 paf 560: default:
1.67 paf 561: THROW(0,0,
562: 0,
563: "unhandled '%s' opcode", opcode_name[op.code]);
1.11 paf 564: }
1.46 paf 565: fprintf(stderr, "\n");
1.11 paf 566: }
1.1 paf 567: }
1.17 paf 568:
569: Value *Request::get_element() {
1.82 paf 570: const String& name=POP_NAME();
1.24 paf 571: Value *ncontext=POP();
1.32 paf 572: Value *value=ncontext->get_element(name);
1.21 paf 573:
1.76 paf 574: if(value)
1.84 paf 575: value=&autocalc(*value, &name); // autocalc possible code-junction
1.76 paf 576: else {
577: value=NEW VUnknown(pool());
578: value->set_name(name);
579: }
1.63 paf 580:
1.17 paf 581: return value;
1.34 paf 582: }
1.70 paf 583:
1.84 paf 584: Value& Request::autocalc(Value& value, const String *name, bool make_string) {
1.70 paf 585: Junction *junction=value.get_junction();
586: if(junction && junction->code) { // is it a code-junction?
587: // autocalc it
588: fprintf(stderr, "ja->\n");
589: PUSH(self);
590: PUSH(root);
591: PUSH(rcontext);
592: PUSH(wcontext);
593:
1.71 paf 594: WContext *frame;
595: if(make_string) {
596: // almost plain wwrapper about junction wcontext,
597: // BUT intercepts string writes
598: frame=NEW VCodeFrame(pool(), *junction->wcontext);
599: } else {
600: // plain wwrapper
601: frame=NEW WWrapper(pool(), 0 /* empty */, false /*not constructing*/);
602: }
603:
604: wcontext=frame;
1.70 paf 605: self=&junction->self;
606: root=junction->root;
607: rcontext=junction->rcontext;
608: execute(*junction->code);
1.71 paf 609: Value *result;
610: if(make_string) {
611: // CodeFrame soul:
612: // string writes were intercepted
613: // returning them as the result of getting code-junction
614: result=NEW VString(*frame->get_string());
615: } else
616: result=frame->result();
1.84 paf 617: if(name)
618: result->set_name(*name);
1.70 paf 619:
620: wcontext=static_cast<WContext *>(POP());
621: rcontext=POP();
622: root=POP();
623: self=static_cast<VAliased *>(POP());
624:
625: fprintf(stderr, "<-ja returned");
1.71 paf 626: return *result;
1.70 paf 627: } else
628: return value;
1.85 paf 629: }
630:
1.87 paf 631: char *Request::execute_static_method(VClass& vclass, String& method_name, bool return_cstr) {
1.85 paf 632: Value *value=vclass.get_element(method_name);
633: if(value) { // found some 'METHOD_NAME' element
634: Junction *junction=value->get_junction();
635: if(junction) {// it even has junction!
636: const Method *method=junction->method;
637: if(method) { // and junction is method-junction! call it
638: PUSH(self);
639: PUSH(root);
640: PUSH(rcontext);
641: PUSH(wcontext);
642:
643: // initialize contexts
644: root=rcontext=self=&vclass;
645: wcontext=NEW WWrapper(pool(), &vclass, false /* not constructing */);
646:
647: // execute!
648: execute(*method->parser_code);
649:
650: // result
651: char *result;
652: if(return_cstr)
653: result=wcontext->get_string()->cstr(); // chars
654: else
655: result=0; // ignore result
656:
657: wcontext=static_cast<WContext *>(POP());
658: rcontext=POP();
659: root=POP();
660: self=static_cast<VAliased *>(POP());
661:
662: // return
663: return result;
664: }
665: }
666: }
667: return 0;
1.70 paf 668: }