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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:
1.93 ! paf 6: $Id: execute.C,v 1.92 2001/03/12 09:08:51 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
1.92 paf 125: frame->store_param(frame->name(), 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();
1.92 paf 185: write_assign_lang(*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();
1.92 paf 206: write_assign_lang(*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);
1.92 paf 281: //frame->set_name(junction->self.name());
282: frame->set_name(value->name());
1.28 paf 283: PUSH(frame);
284: break;
285: }
286: case OP_STORE_PARAM:
287: {
288: Value *value=POP();
1.73 paf 289: VMethodFrame *frame=static_cast<VMethodFrame *>(stack.top_value());
1.92 paf 290: frame->store_param(frame->name(), value);
1.29 paf 291: break;
292: }
293:
294: case OP_CALL:
295: {
1.46 paf 296: fprintf(stderr, "->\n");
1.34 paf 297: VMethodFrame *frame=static_cast<VMethodFrame *>(POP());
298: frame->fill_unspecified_params();
1.45 paf 299: PUSH(self);
300: PUSH(root);
301: PUSH(rcontext);
302: PUSH(wcontext);
303:
1.38 paf 304: VClass *called_class=frame->junction.self.get_class();
1.74 paf 305: // is context object or class & is it my class or my parent's class?
306: VClass *read_class=rcontext->get_class();
307: if(read_class && read_class->is_or_derived_from(*called_class)) // yes
308: self=rcontext; // class dynamic call
1.75 paf 309: else // no, not me or relative of mine (total stranger)
310: if(wcontext->constructing()) { // constructing?
311: // yes, constructor call: $some(^class:method(..))
1.80 paf 312: self=NEW VObject(pool(), *called_class);
1.83 paf 313: frame->write(*self,
314: String::Untaint_lang::NO // not used, always an object, not string
315: );
1.75 paf 316: } else
317: self=&frame->junction.self; // no, static or simple dynamic call
318:
1.45 paf 319: frame->set_self(*self);
1.29 paf 320: root=rcontext=wcontext=frame;
1.47 paf 321: {
1.48 paf 322: // take object or class from any wrappers
323: VAliased *aliased=self->get_aliased();
324: // substitute class alias to the class they are called AS
1.47 paf 325: Temp_alias temp_alias(*aliased, *frame->junction.vclass);
1.68 paf 326:
1.69 paf 327: Method& method=*frame->junction.method;
1.80 paf 328: if(method.native_code) { // native code?
1.92 paf 329: method.check_actual_numbered_params(
330: frame->name(), frame->numbered_params());
331: (*method.native_code)(*this,
332: frame->name(), frame->numbered_params()); // execute it
1.80 paf 333: } else // parser code
1.69 paf 334: execute(*method.parser_code); // execute it
1.47 paf 335: }
1.36 paf 336: Value *value=wcontext->result();
1.45 paf 337:
338: wcontext=static_cast<WContext *>(POP());
339: rcontext=POP();
340: root=POP();
341: self=static_cast<VAliased *>(POP());
1.62 paf 342:
1.61 paf 343: PUSH(value);
1.46 paf 344: fprintf(stderr, "<-returned");
1.49 paf 345: break;
346: }
347:
1.55 paf 348: // expression ops: unary
349: case OP_NEG:
350: {
351: Value *operand=POP();
1.80 paf 352: Value *value=NEW VDouble(pool(), -operand->get_double());
1.55 paf 353: PUSH(value);
354: break;
355: }
356: case OP_INV:
357: {
358: Value *operand=POP();
1.80 paf 359: Value *value=NEW VDouble(pool(), ~static_cast<int>(operand->get_double()));
1.55 paf 360: PUSH(value);
361: break;
362: }
363: case OP_NOT:
364: {
365: Value *operand=POP();
1.78 paf 366: Value *value=NEW VBool(pool(), !operand->get_bool());
1.55 paf 367: PUSH(value);
368: break;
369: }
1.62 paf 370: case OP_DEF:
371: {
372: Value *operand=POP();
1.78 paf 373: Value *value=NEW VBool(pool(), operand->get_defined());
1.62 paf 374: PUSH(value);
375: break;
376: }
377: case OP_IN:
378: {
379: Value *operand=POP();
1.78 paf 380: Value *value=NEW VBool(pool(), true/*TODO*/);
1.62 paf 381: PUSH(value);
382: break;
383: }
384: case OP_FEXISTS:
385: {
386: Value *operand=POP();
1.78 paf 387: Value *value=NEW VBool(pool(), true/*TODO*/);
1.62 paf 388: PUSH(value);
389: break;
390: }
1.55 paf 391:
392: // expression ops: binary
393: case OP_SUB:
1.53 paf 394: {
1.61 paf 395: Value *b=POP(); Value *a=POP();
1.80 paf 396: Value *value=NEW VDouble(pool(), a->get_double() - b->get_double());
1.53 paf 397: PUSH(value);
398: break;
399: }
1.55 paf 400: case OP_ADD:
1.53 paf 401: {
1.61 paf 402: Value *b=POP(); Value *a=POP();
1.80 paf 403: Value *value=NEW VDouble(pool(), a->get_double() + b->get_double());
1.53 paf 404: PUSH(value);
405: break;
406: }
1.49 paf 407: case OP_MUL:
408: {
1.61 paf 409: Value *b=POP(); Value *a=POP();
1.80 paf 410: Value *value=NEW VDouble(pool(), a->get_double() * b->get_double());
1.53 paf 411: PUSH(value);
412: break;
413: }
414: case OP_DIV:
415: {
1.61 paf 416: Value *b=POP(); Value *a=POP();
1.80 paf 417: Value *value=NEW VDouble(pool(), a->get_double() / b->get_double());
1.54 paf 418: PUSH(value);
419: break;
420: }
1.55 paf 421: case OP_MOD:
422: {
1.61 paf 423: Value *b=POP(); Value *a=POP();
1.78 paf 424: Value *value=NEW VDouble(pool(),
1.55 paf 425: static_cast<int>(a->get_double()) %
1.78 paf 426: static_cast<int>(b->get_double()));
1.55 paf 427: PUSH(value);
428: break;
429: }
430: case OP_BIN_AND:
1.54 paf 431: {
1.61 paf 432: Value *b=POP(); Value *a=POP();
1.78 paf 433: Value *value=NEW VDouble(pool(),
1.55 paf 434: static_cast<int>(a->get_double()) &
1.78 paf 435: static_cast<int>(b->get_double()));
1.54 paf 436: PUSH(value);
437: break;
438: }
1.55 paf 439: case OP_BIN_OR:
1.54 paf 440: {
1.61 paf 441: Value *b=POP(); Value *a=POP();
1.78 paf 442: Value *value=NEW VDouble(pool(),
1.55 paf 443: static_cast<int>(a->get_double()) |
1.78 paf 444: static_cast<int>(b->get_double()));
1.55 paf 445: PUSH(value);
446: break;
447: }
1.56 paf 448: case OP_BIN_XOR:
449: {
1.61 paf 450: Value *b=POP(); Value *a=POP();
1.78 paf 451: Value *value=NEW VDouble(pool(),
1.56 paf 452: static_cast<int>(a->get_double()) ^
1.78 paf 453: static_cast<int>(b->get_double()));
1.56 paf 454: PUSH(value);
455: break;
456: }
1.55 paf 457: case OP_LOG_AND:
458: {
1.61 paf 459: Value *b=POP(); Value *a=POP();
1.78 paf 460: Value *value=NEW VBool(pool(), a->get_bool() && b->get_bool());
1.55 paf 461: PUSH(value);
462: break;
463: }
464: case OP_LOG_OR:
465: {
1.61 paf 466: Value *b=POP(); Value *a=POP();
1.78 paf 467: Value *value=NEW VBool(pool(), a->get_bool() || b->get_bool());
1.56 paf 468: PUSH(value);
469: break;
470: }
471: case OP_LOG_XOR:
472: {
1.61 paf 473: Value *b=POP(); Value *a=POP();
1.78 paf 474: Value *value=NEW VBool(pool(), a->get_bool() ^ b->get_bool());
1.55 paf 475: PUSH(value);
476: break;
477: }
478: case OP_NUM_LT:
479: {
1.61 paf 480: Value *b=POP(); Value *a=POP();
1.78 paf 481: Value *value=NEW VBool(pool(), a->get_double() < b->get_double());
1.55 paf 482: PUSH(value);
483: break;
484: }
485: case OP_NUM_GT:
486: {
1.61 paf 487: Value *b=POP(); Value *a=POP();
1.78 paf 488: Value *value=NEW VBool(pool(), a->get_double() > b->get_double());
1.55 paf 489: PUSH(value);
490: break;
491: }
492: case OP_NUM_LE:
493: {
1.61 paf 494: Value *b=POP(); Value *a=POP();
1.78 paf 495: Value *value=NEW VBool(pool(), a->get_double() <= b->get_double());
1.55 paf 496: PUSH(value);
497: break;
498: }
499: case OP_NUM_GE:
500: {
1.61 paf 501: Value *b=POP(); Value *a=POP();
1.78 paf 502: Value *value=NEW VBool(pool(), a->get_double() >= b->get_double());
1.55 paf 503: PUSH(value);
504: break;
505: }
506: case OP_NUM_EQ:
507: {
1.61 paf 508: Value *b=POP(); Value *a=POP();
1.78 paf 509: Value *value=NEW VBool(pool(), a->get_double() == b->get_double());
1.55 paf 510: PUSH(value);
511: break;
512: }
513: case OP_NUM_NE:
514: {
1.61 paf 515: Value *b=POP(); Value *a=POP();
1.78 paf 516: Value *value=NEW VBool(pool(), a->get_double() != b->get_double());
1.54 paf 517: PUSH(value);
518: break;
519: }
1.58 paf 520: case OP_STR_LT:
521: {
1.61 paf 522: Value *b=POP(); Value *a=POP();
1.78 paf 523: Value *value=NEW VBool(pool(), a->as_string() < b->as_string());
1.58 paf 524: PUSH(value);
525: break;
526: }
527: case OP_STR_GT:
528: {
1.61 paf 529: Value *b=POP(); Value *a=POP();
1.78 paf 530: Value *value=NEW VBool(pool(), a->as_string() > b->as_string());
1.58 paf 531: PUSH(value);
532: break;
533: }
1.55 paf 534: case OP_STR_LE:
1.58 paf 535: {
1.61 paf 536: Value *b=POP(); Value *a=POP();
1.78 paf 537: Value *value=NEW VBool(pool(), a->as_string() <= b->as_string());
1.58 paf 538: PUSH(value);
539: break;
540: }
1.55 paf 541: case OP_STR_GE:
1.54 paf 542: {
1.61 paf 543: Value *b=POP(); Value *a=POP();
1.78 paf 544: Value *value=NEW VBool(pool(), a->as_string() >= b->as_string());
1.58 paf 545: PUSH(value);
546: break;
547: }
548: case OP_STR_EQ:
549: {
1.61 paf 550: Value *b=POP(); Value *a=POP();
1.78 paf 551: Value *value=NEW VBool(pool(), a->as_string() == b->as_string());
1.58 paf 552: PUSH(value);
553: break;
554: }
555: case OP_STR_NE:
556: {
1.61 paf 557: Value *b=POP(); Value *a=POP();
1.78 paf 558: Value *value=NEW VBool(pool(), a->as_string() != b->as_string());
1.49 paf 559: PUSH(value);
1.28 paf 560: break;
561: }
562:
1.11 paf 563: default:
1.67 paf 564: THROW(0,0,
565: 0,
566: "unhandled '%s' opcode", opcode_name[op.code]);
1.11 paf 567: }
1.46 paf 568: fprintf(stderr, "\n");
1.11 paf 569: }
1.1 paf 570: }
1.17 paf 571:
572: Value *Request::get_element() {
1.82 paf 573: const String& name=POP_NAME();
1.24 paf 574: Value *ncontext=POP();
1.32 paf 575: Value *value=ncontext->get_element(name);
1.21 paf 576:
1.76 paf 577: if(value)
1.92 paf 578: value=&process(*value, &name); // process possible code-junction
1.76 paf 579: else {
580: value=NEW VUnknown(pool());
581: value->set_name(name);
582: }
1.63 paf 583:
1.17 paf 584: return value;
1.34 paf 585: }
1.70 paf 586:
1.92 paf 587: Value& Request::process(Value& value, const String *name, bool intercept_string) {
1.90 paf 588: // intercept_string:
589: // true:
590: // they want result=string value,
591: // possible object result goes to wcontext
592: // false:
593: // they want any result[string|object]
594: // nothing goes to wcontext.
595: // used in (expression) params evaluation
596:
1.91 paf 597: Value *result;
1.70 paf 598: Junction *junction=value.get_junction();
599: if(junction && junction->code) { // is it a code-junction?
1.92 paf 600: // process it
1.70 paf 601: fprintf(stderr, "ja->\n");
602: PUSH(self);
603: PUSH(root);
604: PUSH(rcontext);
605: PUSH(wcontext);
606:
1.71 paf 607: WContext *frame;
1.90 paf 608: if(intercept_string) {
1.71 paf 609: // almost plain wwrapper about junction wcontext,
610: // BUT intercepts string writes
611: frame=NEW VCodeFrame(pool(), *junction->wcontext);
612: } else {
613: // plain wwrapper
614: frame=NEW WWrapper(pool(), 0 /* empty */, false /*not constructing*/);
615: }
616:
617: wcontext=frame;
1.70 paf 618: self=&junction->self;
619: root=junction->root;
620: rcontext=junction->rcontext;
621: execute(*junction->code);
1.90 paf 622: if(intercept_string) {
1.71 paf 623: // CodeFrame soul:
624: // string writes were intercepted
625: // returning them as the result of getting code-junction
626: result=NEW VString(*frame->get_string());
627: } else
628: result=frame->result();
1.70 paf 629:
630: wcontext=static_cast<WContext *>(POP());
631: rcontext=POP();
632: root=POP();
633: self=static_cast<VAliased *>(POP());
634:
635: fprintf(stderr, "<-ja returned");
636: } else
1.91 paf 637: result=&value;
638:
639: if(name)
640: result->set_name(*name);
641: return *result;
1.85 paf 642: }
643:
1.87 paf 644: char *Request::execute_static_method(VClass& vclass, String& method_name, bool return_cstr) {
1.93 ! paf 645: if(const Method *method=vclass.get_method(method_name)) {
! 646: PUSH(self);
! 647: PUSH(root);
! 648: PUSH(rcontext);
! 649: PUSH(wcontext);
! 650:
! 651: // initialize contexts
! 652: root=rcontext=self=&vclass;
! 653: wcontext=NEW WWrapper(pool(), &vclass, false /* not constructing */);
! 654:
! 655: // execute!
! 656: execute(*method->parser_code);
! 657:
! 658: // result
! 659: char *result;
! 660: if(return_cstr)
! 661: result=wcontext->get_string()->cstr(); // chars
! 662: else
! 663: result=0; // ignore result
! 664:
! 665: wcontext=static_cast<WContext *>(POP());
! 666: rcontext=POP();
! 667: root=POP();
! 668: self=static_cast<VAliased *>(POP());
! 669:
! 670: // return
! 671: return result;
1.85 paf 672: }
673: return 0;
1.70 paf 674: }