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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:
1.96 ! paf 6: $Id: execute.C,v 1.95 2001/03/12 17:00:47 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"
1.94 paf 20: #include "pa_vtable.h"
1.1 paf 21:
22: #include <stdio.h>
23:
1.24 paf 24: #define PUSH(value) stack.push(value)
25: #define POP() static_cast<Value *>(stack.pop())
1.32 paf 26: #define POP_NAME() static_cast<Value *>(stack.pop())->as_string()
1.24 paf 27:
1.11 paf 28:
1.1 paf 29: char *opcode_name[]={
1.49 paf 30: // literals
1.66 paf 31: "VALUE", "CODE__STORE_PARAM",
1.49 paf 32:
33: // actions
1.51 paf 34: "WITH_SELF", "WITH_ROOT", "WITH_READ", "WITH_WRITE",
1.66 paf 35: "GET_CLASS",
1.80 paf 36: "CONSTRUCT_VALUE", "CONSTRUCT_DOUBLE",
1.86 paf 37: "WRITE", "STRING__WRITE",
1.18 paf 38: "GET_ELEMENT", "GET_ELEMENT__WRITE",
1.1 paf 39: "CREATE_EWPOOL", "REDUCE_EWPOOL",
40: "CREATE_RWPOOL", "REDUCE_RWPOOL",
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
47: "NEG", "INV", "NOT", "DEF", "IN", "FEXISTS",
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",
1.55 paf 53: "STR_LT", "STR_GT", "STR_LE", "STR_GE", "STR_EQ", "STR_NE"
1.1 paf 54: };
55:
1.9 paf 56: void dump(int level, const Array& ops) {
1.23 paf 57: if(0){
58: int size=ops.size();
1.46 paf 59: //fprintf(stderr, "size=%d\n", size);
1.23 paf 60: for(int i=0; i<size; i++) {
61: Operation op;
62: op.cast=ops.quick_get(i);
1.46 paf 63: fprintf(stderr, "%8X\n", op.cast);
1.23 paf 64: }
65: }
66:
1.9 paf 67: int size=ops.size();
1.46 paf 68: //fprintf(stderr, "size=%d\n", size);
1.1 paf 69: for(int i=0; i<size; i++) {
1.23 paf 70: Operation op;
71: op.cast=ops.quick_get(i);
1.46 paf 72: fprintf(stderr, "%*s%s", level*4, "", opcode_name[op.code]);
1.1 paf 73:
1.86 paf 74: if(op.code==OP_VALUE || op.code==OP_STRING__WRITE) {
1.52 paf 75: Value *value=static_cast<Value *>(ops.quick_get(++i));
76: fprintf(stderr, " \"%s\" %s", value->get_string()->cstr(), value->type());
1.15 paf 77: }
1.46 paf 78: fprintf(stderr, "\n");
1.1 paf 79:
1.65 paf 80: if(op.code==OP_CODE__STORE_PARAM) {
1.10 paf 81: const Array *local_ops=reinterpret_cast<const Array *>(ops.quick_get(++i));
1.9 paf 82: dump(level+1, *local_ops);
1.1 paf 83: }
84: }
1.60 paf 85: fflush(stderr);
1.1 paf 86: }
87:
1.32 paf 88: void Request::execute(const Array& ops) {
1.30 paf 89: if(1) {
1.51 paf 90: fputs("source----------------------------\n", stderr);
1.12 paf 91: dump(0, ops);
1.51 paf 92: fputs("execution-------------------------\n", stderr);
1.12 paf 93: }
94:
1.11 paf 95: int size=ops.size();
1.46 paf 96: //fprintf(stderr, "size=%d\n", size);
1.11 paf 97: for(int i=0; i<size; i++) {
1.23 paf 98: Operation op;
99: op.cast=ops.quick_get(i);
1.80 paf 100: fprintf(stderr, "%d:%s", stack.top_index()+1, opcode_name[op.code]); fflush(stderr);
1.11 paf 101:
1.23 paf 102: switch(op.code) {
1.51 paf 103: // param in next instruction
1.52 paf 104: case OP_VALUE:
1.32 paf 105: {
1.52 paf 106: Value *value=static_cast<Value *>(ops.quick_get(++i));
107: fprintf(stderr, " \"%s\" %s", value->get_string()->cstr(), value->type());
108: PUSH(value);
1.32 paf 109: break;
110: }
1.65 paf 111: case OP_CODE__STORE_PARAM:
1.32 paf 112: {
1.73 paf 113: VMethodFrame *frame=static_cast<VMethodFrame *>(stack.top_value());
1.65 paf 114: // code
1.32 paf 115: const Array *local_ops=reinterpret_cast<const Array *>(ops.quick_get(++i));
1.46 paf 116: fprintf(stderr, " (%d)\n", local_ops->size());
1.38 paf 117: dump(1, *local_ops);
1.63 paf 118:
1.32 paf 119: Junction& j=*NEW Junction(pool(),
1.45 paf 120: *self, 0, 0,
1.64 paf 121: root, frame, frame, local_ops);
1.32 paf 122:
123: Value *value=NEW VJunction(j);
1.65 paf 124:
125: // store param
1.92 paf 126: frame->store_param(frame->name(), value);
1.32 paf 127: break;
128: }
1.66 paf 129: case OP_GET_CLASS:
1.38 paf 130: {
1.82 paf 131: const String& name=POP_NAME();
1.66 paf 132: VClass *vclass=static_cast<VClass *>(classes().get(name));
133: if(!vclass)
134: THROW(0,0,
135: &name,
136: ": undefined class");
137:
138: PUSH(vclass);
1.38 paf 139: break;
140: }
1.32 paf 141:
1.51 paf 142: // OP_WITH
1.37 paf 143: case OP_WITH_SELF:
144: {
145: PUSH(self);
146: break;
147: }
148: case OP_WITH_ROOT:
1.11 paf 149: {
1.37 paf 150: PUSH(root);
1.13 paf 151: break;
1.11 paf 152: }
1.15 paf 153: case OP_WITH_READ:
154: {
1.24 paf 155: PUSH(rcontext);
1.20 paf 156: break;
157: }
1.37 paf 158: case OP_WITH_WRITE:
1.20 paf 159: {
1.37 paf 160: PUSH(wcontext);
1.20 paf 161: break;
162: }
1.37 paf 163:
1.51 paf 164: // OTHER ACTIONS BUT WITHs
1.80 paf 165: case OP_CONSTRUCT_VALUE:
1.20 paf 166: {
1.37 paf 167: Value *value=POP();
1.82 paf 168: const String& name=POP_NAME();
1.37 paf 169: Value *ncontext=POP();
1.81 paf 170: ncontext->put_element(name, value);
1.37 paf 171: value->set_name(name);
1.15 paf 172: break;
173: }
1.80 paf 174: case OP_CONSTRUCT_EXPR:
175: {
176: Value *value=POP();
1.82 paf 177: const String& name=POP_NAME();
1.80 paf 178: Value *ncontext=POP();
1.81 paf 179: ncontext->put_element(name, value->get_expr_result());
1.80 paf 180: value->set_name(name);
181: break;
182: }
1.18 paf 183: case OP_WRITE:
1.13 paf 184: {
1.24 paf 185: Value *value=POP();
1.92 paf 186: write_assign_lang(*value);
1.86 paf 187: break;
188: }
189: case OP_STRING__WRITE:
190: {
191: VString *vstring=static_cast<VString *>(ops.quick_get(++i));
192: fprintf(stderr, " \"%s\"", vstring->value().cstr());
193: write(vstring->value());
1.13 paf 194: break;
1.14 paf 195: }
1.13 paf 196:
1.15 paf 197: case OP_GET_ELEMENT:
1.11 paf 198: {
1.17 paf 199: Value *value=get_element();
1.24 paf 200: PUSH(value);
1.17 paf 201: break;
202: }
203:
1.18 paf 204: case OP_GET_ELEMENT__WRITE:
1.17 paf 205: {
206: Value *value=get_element();
1.92 paf 207: write_assign_lang(*value);
1.17 paf 208: break;
209: }
210:
1.32 paf 211:
1.17 paf 212: case OP_CREATE_EWPOOL:
213: {
1.24 paf 214: PUSH(wcontext);
1.43 paf 215: wcontext=NEW WWrapper(pool(), 0 /* empty */, true /* constructing */);
1.17 paf 216: break;
217: }
218: case OP_REDUCE_EWPOOL:
219: {
1.36 paf 220: Value *value=wcontext->result();
1.25 paf 221: wcontext=static_cast<WContext *>(POP());
1.24 paf 222: PUSH(value);
1.13 paf 223: break;
1.15 paf 224: }
1.13 paf 225:
1.26 paf 226: case OP_CREATE_RWPOOL:
227: {
228: Value *ncontext=POP();
229: PUSH(rcontext);
230: rcontext=ncontext;
231: PUSH(wcontext);
1.43 paf 232: wcontext=NEW WWrapper(pool(), ncontext, false /* not constructing */);
1.26 paf 233: break;
234: }
235: case OP_REDUCE_RWPOOL:
236: {
1.82 paf 237: const String *string=wcontext->get_string();
1.80 paf 238: Value *value;
239: if(string)
240: value=NEW VString(*string);
241: else
242: value=NEW VUnknown(pool());
1.26 paf 243: wcontext=static_cast<WContext *>(POP());
244: rcontext=POP();
245: PUSH(value);
246: break;
247: }
1.49 paf 248: case OP_CREATE_SWPOOL:
249: {
250: PUSH(wcontext);
1.50 paf 251: wcontext=NEW WWrapper(pool(), 0 /* empty */, false /* not constructing */);
1.49 paf 252: break;
253: }
254: case OP_REDUCE_SWPOOL:
255: {
256: // from "$a $b" part of expression taking only string value,
257: // ignoring any other content of wcontext
1.82 paf 258: const String *string=wcontext->get_string();
1.80 paf 259: Value *value;
260: if(string)
261: value=NEW VString(*string);
262: else
263: NEW VUnknown(pool());
1.50 paf 264: wcontext=static_cast<WContext *>(POP());
1.49 paf 265: PUSH(value);
266: break;
267: }
268:
1.51 paf 269: // CALL
1.28 paf 270: case OP_GET_METHOD_FRAME:
271: {
1.32 paf 272: Value *value=POP();
1.70 paf 273: // info: this one's always method-junction, not a code-junction
1.32 paf 274: Junction *junction=value->get_junction();
1.31 paf 275: if(!junction)
1.28 paf 276: THROW(0,0,
1.42 paf 277: &value->name(),
1.95 paf 278: "(%s) uncallable, must be method or junction",
1.38 paf 279: value->type());
1.70 paf 280:
1.34 paf 281: VMethodFrame *frame=NEW VMethodFrame(pool(), *junction);
1.92 paf 282: //frame->set_name(junction->self.name());
283: frame->set_name(value->name());
1.28 paf 284: PUSH(frame);
285: break;
286: }
287: case OP_STORE_PARAM:
288: {
289: Value *value=POP();
1.73 paf 290: VMethodFrame *frame=static_cast<VMethodFrame *>(stack.top_value());
1.92 paf 291: frame->store_param(frame->name(), value);
1.29 paf 292: break;
293: }
294:
295: case OP_CALL:
296: {
1.46 paf 297: fprintf(stderr, "->\n");
1.34 paf 298: VMethodFrame *frame=static_cast<VMethodFrame *>(POP());
299: frame->fill_unspecified_params();
1.45 paf 300: PUSH(self);
301: PUSH(root);
302: PUSH(rcontext);
303: PUSH(wcontext);
304:
1.38 paf 305: VClass *called_class=frame->junction.self.get_class();
1.74 paf 306: // is context object or class & is it my class or my parent's class?
307: VClass *read_class=rcontext->get_class();
308: if(read_class && read_class->is_or_derived_from(*called_class)) // yes
309: self=rcontext; // class dynamic call
1.75 paf 310: else // no, not me or relative of mine (total stranger)
311: if(wcontext->constructing()) { // constructing?
1.96 ! paf 312: // yes, constructor call: $some[^class:method[..]]
1.94 paf 313: if(called_class->name()==TABLE_CLASS_NAME)
314: self=NEW VTable(pool());
315: else
316: self=NEW VObject(pool(), *called_class);
1.83 paf 317: frame->write(*self,
318: String::Untaint_lang::NO // not used, always an object, not string
319: );
1.75 paf 320: } else
321: self=&frame->junction.self; // no, static or simple dynamic call
322:
1.45 paf 323: frame->set_self(*self);
1.29 paf 324: root=rcontext=wcontext=frame;
1.47 paf 325: {
1.48 paf 326: // take object or class from any wrappers
327: VAliased *aliased=self->get_aliased();
328: // substitute class alias to the class they are called AS
1.47 paf 329: Temp_alias temp_alias(*aliased, *frame->junction.vclass);
1.68 paf 330:
1.69 paf 331: Method& method=*frame->junction.method;
1.80 paf 332: if(method.native_code) { // native code?
1.92 paf 333: method.check_actual_numbered_params(
334: frame->name(), frame->numbered_params());
335: (*method.native_code)(*this,
336: frame->name(), frame->numbered_params()); // execute it
1.80 paf 337: } else // parser code
1.69 paf 338: execute(*method.parser_code); // execute it
1.47 paf 339: }
1.36 paf 340: Value *value=wcontext->result();
1.45 paf 341:
342: wcontext=static_cast<WContext *>(POP());
343: rcontext=POP();
344: root=POP();
345: self=static_cast<VAliased *>(POP());
1.62 paf 346:
1.61 paf 347: PUSH(value);
1.46 paf 348: fprintf(stderr, "<-returned");
1.49 paf 349: break;
350: }
351:
1.55 paf 352: // expression ops: unary
353: case OP_NEG:
354: {
355: Value *operand=POP();
1.80 paf 356: Value *value=NEW VDouble(pool(), -operand->get_double());
1.55 paf 357: PUSH(value);
358: break;
359: }
360: case OP_INV:
361: {
362: Value *operand=POP();
1.80 paf 363: Value *value=NEW VDouble(pool(), ~static_cast<int>(operand->get_double()));
1.55 paf 364: PUSH(value);
365: break;
366: }
367: case OP_NOT:
368: {
369: Value *operand=POP();
1.78 paf 370: Value *value=NEW VBool(pool(), !operand->get_bool());
1.55 paf 371: PUSH(value);
372: break;
373: }
1.62 paf 374: case OP_DEF:
375: {
376: Value *operand=POP();
1.78 paf 377: Value *value=NEW VBool(pool(), operand->get_defined());
1.62 paf 378: PUSH(value);
379: break;
380: }
381: case OP_IN:
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: }
388: case OP_FEXISTS:
389: {
390: Value *operand=POP();
1.78 paf 391: Value *value=NEW VBool(pool(), true/*TODO*/);
1.62 paf 392: PUSH(value);
393: break;
394: }
1.55 paf 395:
396: // expression ops: binary
397: case OP_SUB:
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: }
1.55 paf 404: case OP_ADD:
1.53 paf 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: }
1.49 paf 411: case OP_MUL:
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());
1.53 paf 415: PUSH(value);
416: break;
417: }
418: case OP_DIV:
419: {
1.61 paf 420: Value *b=POP(); Value *a=POP();
1.80 paf 421: Value *value=NEW VDouble(pool(), a->get_double() / b->get_double());
1.54 paf 422: PUSH(value);
423: break;
424: }
1.55 paf 425: case OP_MOD:
426: {
1.61 paf 427: Value *b=POP(); Value *a=POP();
1.78 paf 428: Value *value=NEW VDouble(pool(),
1.55 paf 429: static_cast<int>(a->get_double()) %
1.78 paf 430: static_cast<int>(b->get_double()));
1.55 paf 431: PUSH(value);
432: break;
433: }
434: case OP_BIN_AND:
1.54 paf 435: {
1.61 paf 436: Value *b=POP(); Value *a=POP();
1.78 paf 437: Value *value=NEW VDouble(pool(),
1.55 paf 438: static_cast<int>(a->get_double()) &
1.78 paf 439: static_cast<int>(b->get_double()));
1.54 paf 440: PUSH(value);
441: break;
442: }
1.55 paf 443: case OP_BIN_OR:
1.54 paf 444: {
1.61 paf 445: Value *b=POP(); Value *a=POP();
1.78 paf 446: Value *value=NEW VDouble(pool(),
1.55 paf 447: static_cast<int>(a->get_double()) |
1.78 paf 448: static_cast<int>(b->get_double()));
1.55 paf 449: PUSH(value);
450: break;
451: }
1.56 paf 452: case OP_BIN_XOR:
453: {
1.61 paf 454: Value *b=POP(); Value *a=POP();
1.78 paf 455: Value *value=NEW VDouble(pool(),
1.56 paf 456: static_cast<int>(a->get_double()) ^
1.78 paf 457: static_cast<int>(b->get_double()));
1.56 paf 458: PUSH(value);
459: break;
460: }
1.55 paf 461: case OP_LOG_AND:
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());
1.55 paf 465: PUSH(value);
466: break;
467: }
468: case OP_LOG_OR:
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());
1.56 paf 472: PUSH(value);
473: break;
474: }
475: case OP_LOG_XOR:
476: {
1.61 paf 477: Value *b=POP(); Value *a=POP();
1.78 paf 478: Value *value=NEW VBool(pool(), a->get_bool() ^ b->get_bool());
1.55 paf 479: PUSH(value);
480: break;
481: }
482: case OP_NUM_LT:
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_GT:
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_LE:
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_GE:
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_EQ:
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());
1.55 paf 514: PUSH(value);
515: break;
516: }
517: case OP_NUM_NE:
518: {
1.61 paf 519: Value *b=POP(); Value *a=POP();
1.78 paf 520: Value *value=NEW VBool(pool(), a->get_double() != b->get_double());
1.54 paf 521: PUSH(value);
522: break;
523: }
1.58 paf 524: case OP_STR_LT:
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: }
531: case OP_STR_GT:
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_LE:
1.58 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: }
1.55 paf 545: case OP_STR_GE:
1.54 paf 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_EQ:
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());
1.58 paf 556: PUSH(value);
557: break;
558: }
559: case OP_STR_NE:
560: {
1.61 paf 561: Value *b=POP(); Value *a=POP();
1.78 paf 562: Value *value=NEW VBool(pool(), a->as_string() != b->as_string());
1.49 paf 563: PUSH(value);
1.28 paf 564: break;
565: }
566:
1.11 paf 567: default:
1.67 paf 568: THROW(0,0,
569: 0,
570: "unhandled '%s' opcode", opcode_name[op.code]);
1.11 paf 571: }
1.46 paf 572: fprintf(stderr, "\n");
1.11 paf 573: }
1.1 paf 574: }
1.17 paf 575:
576: Value *Request::get_element() {
1.82 paf 577: const String& name=POP_NAME();
1.24 paf 578: Value *ncontext=POP();
1.32 paf 579: Value *value=ncontext->get_element(name);
1.21 paf 580:
1.76 paf 581: if(value)
1.92 paf 582: value=&process(*value, &name); // process possible code-junction
1.76 paf 583: else {
584: value=NEW VUnknown(pool());
585: value->set_name(name);
586: }
1.63 paf 587:
1.17 paf 588: return value;
1.34 paf 589: }
1.70 paf 590:
1.92 paf 591: Value& Request::process(Value& value, const String *name, bool intercept_string) {
1.90 paf 592: // intercept_string:
593: // true:
594: // they want result=string value,
595: // possible object result goes to wcontext
596: // false:
597: // they want any result[string|object]
598: // nothing goes to wcontext.
599: // used in (expression) params evaluation
600:
1.91 paf 601: Value *result;
1.70 paf 602: Junction *junction=value.get_junction();
603: if(junction && junction->code) { // is it a code-junction?
1.92 paf 604: // process it
1.70 paf 605: fprintf(stderr, "ja->\n");
606: PUSH(self);
607: PUSH(root);
608: PUSH(rcontext);
609: PUSH(wcontext);
610:
1.71 paf 611: WContext *frame;
1.90 paf 612: if(intercept_string) {
1.71 paf 613: // almost plain wwrapper about junction wcontext,
614: // BUT intercepts string writes
615: frame=NEW VCodeFrame(pool(), *junction->wcontext);
616: } else {
617: // plain wwrapper
618: frame=NEW WWrapper(pool(), 0 /* empty */, false /*not constructing*/);
619: }
620:
621: wcontext=frame;
1.70 paf 622: self=&junction->self;
623: root=junction->root;
624: rcontext=junction->rcontext;
625: execute(*junction->code);
1.90 paf 626: if(intercept_string) {
1.71 paf 627: // CodeFrame soul:
628: // string writes were intercepted
629: // returning them as the result of getting code-junction
630: result=NEW VString(*frame->get_string());
631: } else
632: result=frame->result();
1.70 paf 633:
634: wcontext=static_cast<WContext *>(POP());
635: rcontext=POP();
636: root=POP();
637: self=static_cast<VAliased *>(POP());
638:
639: fprintf(stderr, "<-ja returned");
640: } else
1.91 paf 641: result=&value;
642:
643: if(name)
644: result->set_name(*name);
645: return *result;
1.85 paf 646: }
647:
1.87 paf 648: char *Request::execute_static_method(VClass& vclass, String& method_name, bool return_cstr) {
1.93 paf 649: if(const Method *method=vclass.get_method(method_name)) {
650: PUSH(self);
651: PUSH(root);
652: PUSH(rcontext);
653: PUSH(wcontext);
654:
655: // initialize contexts
656: root=rcontext=self=&vclass;
657: wcontext=NEW WWrapper(pool(), &vclass, false /* not constructing */);
658:
659: // execute!
660: execute(*method->parser_code);
661:
662: // result
663: char *result;
664: if(return_cstr)
665: result=wcontext->get_string()->cstr(); // chars
666: else
667: result=0; // ignore result
668:
669: wcontext=static_cast<WContext *>(POP());
670: rcontext=POP();
671: root=POP();
672: self=static_cast<VAliased *>(POP());
673:
674: // return
675: return result;
1.85 paf 676: }
677: return 0;
1.70 paf 678: }