Annotation of parser3/src/main/execute.C, revision 1.80
1.1 paf 1: /*
1.80 ! paf 2: $Id: execute.C,v 1.79 2001/03/09 04:47:29 paf Exp $
1.1 paf 3: */
4:
1.8 paf 5: #include "pa_array.h"
1.1 paf 6: #include "code.h"
1.11 paf 7: #include "pa_request.h"
1.15 paf 8: #include "pa_vstring.h"
1.22 paf 9: #include "pa_vhash.h"
1.23 paf 10: #include "pa_vunknown.h"
1.34 paf 11: #include "pa_vcframe.h"
12: #include "pa_vmframe.h"
1.38 paf 13: #include "pa_vobject.h"
1.49 paf 14: #include "pa_vdouble.h"
1.54 paf 15: #include "pa_vbool.h"
1.1 paf 16:
17: #include <stdio.h>
18:
1.24 paf 19: #define PUSH(value) stack.push(value)
20: #define POP() static_cast<Value *>(stack.pop())
1.32 paf 21: #define POP_NAME() static_cast<Value *>(stack.pop())->as_string()
1.24 paf 22:
1.11 paf 23:
1.1 paf 24: char *opcode_name[]={
1.49 paf 25: // literals
1.66 paf 26: "VALUE", "CODE__STORE_PARAM",
1.49 paf 27:
28: // actions
1.51 paf 29: "WITH_SELF", "WITH_ROOT", "WITH_READ", "WITH_WRITE",
1.66 paf 30: "GET_CLASS",
1.80 ! paf 31: "CONSTRUCT_VALUE", "CONSTRUCT_DOUBLE",
1.18 paf 32: "WRITE",
33: "GET_ELEMENT", "GET_ELEMENT__WRITE",
1.1 paf 34: "CREATE_EWPOOL", "REDUCE_EWPOOL",
35: "CREATE_RWPOOL", "REDUCE_RWPOOL",
1.49 paf 36: "CREATE_SWPOOL", "REDUCE_SWPOOL",
1.1 paf 37: "GET_METHOD_FRAME",
38: "STORE_PARAM",
1.51 paf 39: "CALL",
1.49 paf 40:
41: // expression ops: unary
42: "NEG", "INV", "NOT", "DEF", "IN", "FEXISTS",
43: // expression ops: binary
44: "SUB", "ADD", "MUL", "DIV", "MOD",
1.56 paf 45: "BIN_AND", "BIN_OR", "BIN_XOR",
46: "LOG_AND", "LOG_OR", "LOG_XOR",
1.49 paf 47: "NUM_LT", "NUM_GT", "NUM_LE", "NUM_GE", "NUM_EQ", "NUM_NE",
1.55 paf 48: "STR_LT", "STR_GT", "STR_LE", "STR_GE", "STR_EQ", "STR_NE"
1.1 paf 49: };
50:
1.9 paf 51: void dump(int level, const Array& ops) {
1.23 paf 52: if(0){
53: int size=ops.size();
1.46 paf 54: //fprintf(stderr, "size=%d\n", size);
1.23 paf 55: for(int i=0; i<size; i++) {
56: Operation op;
57: op.cast=ops.quick_get(i);
1.46 paf 58: fprintf(stderr, "%8X\n", op.cast);
1.23 paf 59: }
60: }
61:
1.9 paf 62: int size=ops.size();
1.46 paf 63: //fprintf(stderr, "size=%d\n", size);
1.1 paf 64: for(int i=0; i<size; i++) {
1.23 paf 65: Operation op;
66: op.cast=ops.quick_get(i);
1.46 paf 67: fprintf(stderr, "%*s%s", level*4, "", opcode_name[op.code]);
1.1 paf 68:
1.52 paf 69: if(op.code==OP_VALUE) {
70: Value *value=static_cast<Value *>(ops.quick_get(++i));
71: fprintf(stderr, " \"%s\" %s", value->get_string()->cstr(), value->type());
1.15 paf 72: }
1.46 paf 73: fprintf(stderr, "\n");
1.1 paf 74:
1.65 paf 75: if(op.code==OP_CODE__STORE_PARAM) {
1.10 paf 76: const Array *local_ops=reinterpret_cast<const Array *>(ops.quick_get(++i));
1.9 paf 77: dump(level+1, *local_ops);
1.1 paf 78: }
79: }
1.60 paf 80: fflush(stderr);
1.1 paf 81: }
82:
1.32 paf 83: void Request::execute(const Array& ops) {
1.30 paf 84: if(1) {
1.51 paf 85: fputs("source----------------------------\n", stderr);
1.12 paf 86: dump(0, ops);
1.51 paf 87: fputs("execution-------------------------\n", stderr);
1.12 paf 88: }
89:
1.11 paf 90: int size=ops.size();
1.46 paf 91: //fprintf(stderr, "size=%d\n", size);
1.11 paf 92: for(int i=0; i<size; i++) {
1.23 paf 93: Operation op;
94: op.cast=ops.quick_get(i);
1.80 ! paf 95: fprintf(stderr, "%d:%s", stack.top_index()+1, opcode_name[op.code]); fflush(stderr);
1.11 paf 96:
1.23 paf 97: switch(op.code) {
1.51 paf 98: // param in next instruction
1.52 paf 99: case OP_VALUE:
1.32 paf 100: {
1.52 paf 101: Value *value=static_cast<Value *>(ops.quick_get(++i));
102: fprintf(stderr, " \"%s\" %s", value->get_string()->cstr(), value->type());
103: PUSH(value);
1.32 paf 104: break;
105: }
1.65 paf 106: case OP_CODE__STORE_PARAM:
1.32 paf 107: {
1.73 paf 108: VMethodFrame *frame=static_cast<VMethodFrame *>(stack.top_value());
1.65 paf 109: // code
1.32 paf 110: const Array *local_ops=reinterpret_cast<const Array *>(ops.quick_get(++i));
1.46 paf 111: fprintf(stderr, " (%d)\n", local_ops->size());
1.38 paf 112: dump(1, *local_ops);
1.63 paf 113:
1.32 paf 114: Junction& j=*NEW Junction(pool(),
1.45 paf 115: *self, 0, 0,
1.64 paf 116: root, frame, frame, local_ops);
1.32 paf 117:
118: Value *value=NEW VJunction(j);
1.63 paf 119: value->set_name(frame->name());
1.65 paf 120:
121: // store param
122: frame->store_param(value);
1.32 paf 123: break;
124: }
1.66 paf 125: case OP_GET_CLASS:
1.38 paf 126: {
1.66 paf 127: String& name=POP_NAME();
128: VClass *vclass=static_cast<VClass *>(classes().get(name));
129: if(!vclass)
130: THROW(0,0,
131: &name,
132: ": undefined class");
133:
134: PUSH(vclass);
1.38 paf 135: break;
136: }
1.32 paf 137:
1.51 paf 138: // OP_WITH
1.37 paf 139: case OP_WITH_SELF:
140: {
141: PUSH(self);
142: break;
143: }
144: case OP_WITH_ROOT:
1.11 paf 145: {
1.37 paf 146: PUSH(root);
1.13 paf 147: break;
1.11 paf 148: }
1.15 paf 149: case OP_WITH_READ:
150: {
1.24 paf 151: PUSH(rcontext);
1.20 paf 152: break;
153: }
1.37 paf 154: case OP_WITH_WRITE:
1.20 paf 155: {
1.37 paf 156: PUSH(wcontext);
1.20 paf 157: break;
158: }
1.37 paf 159:
1.51 paf 160: // OTHER ACTIONS BUT WITHs
1.80 ! paf 161: case OP_CONSTRUCT_VALUE:
1.20 paf 162: {
1.37 paf 163: Value *value=POP();
164: String& name=POP_NAME();
165: Value *ncontext=POP();
166: value->set_name(name);
167: ncontext->put_element(name, value);
1.15 paf 168: break;
169: }
1.80 ! paf 170: case OP_CONSTRUCT_EXPR:
! 171: {
! 172: Value *value=POP();
! 173: String& name=POP_NAME();
! 174: Value *ncontext=POP();
! 175: value->set_name(name);
! 176: ncontext->put_element(name, value->get_expr_result());
! 177: break;
! 178: }
1.18 paf 179: case OP_WRITE:
1.13 paf 180: {
1.24 paf 181: Value *value=POP();
1.70 paf 182: wcontext->write(*value);
1.13 paf 183: break;
1.14 paf 184: }
1.13 paf 185:
1.15 paf 186: case OP_GET_ELEMENT:
1.11 paf 187: {
1.17 paf 188: Value *value=get_element();
1.24 paf 189: PUSH(value);
1.17 paf 190: break;
191: }
192:
1.18 paf 193: case OP_GET_ELEMENT__WRITE:
1.17 paf 194: {
195: Value *value=get_element();
1.70 paf 196: wcontext->write(*value);
1.17 paf 197: break;
198: }
199:
1.32 paf 200:
1.17 paf 201: case OP_CREATE_EWPOOL:
202: {
1.24 paf 203: PUSH(wcontext);
1.43 paf 204: wcontext=NEW WWrapper(pool(), 0 /* empty */, true /* constructing */);
1.17 paf 205: break;
206: }
207: case OP_REDUCE_EWPOOL:
208: {
1.36 paf 209: Value *value=wcontext->result();
1.25 paf 210: wcontext=static_cast<WContext *>(POP());
1.24 paf 211: PUSH(value);
1.13 paf 212: break;
1.15 paf 213: }
1.13 paf 214:
1.26 paf 215: case OP_CREATE_RWPOOL:
216: {
217: Value *ncontext=POP();
218: PUSH(rcontext);
219: rcontext=ncontext;
220: PUSH(wcontext);
1.43 paf 221: wcontext=NEW WWrapper(pool(), ncontext, false /* not constructing */);
1.26 paf 222: break;
223: }
224: case OP_REDUCE_RWPOOL:
225: {
226: String *string=wcontext->get_string();
1.80 ! paf 227: Value *value;
! 228: if(string)
! 229: value=NEW VString(*string);
! 230: else
! 231: value=NEW VUnknown(pool());
1.26 paf 232: wcontext=static_cast<WContext *>(POP());
233: rcontext=POP();
234: PUSH(value);
235: break;
236: }
1.49 paf 237: case OP_CREATE_SWPOOL:
238: {
239: PUSH(wcontext);
1.50 paf 240: wcontext=NEW WWrapper(pool(), 0 /* empty */, false /* not constructing */);
1.49 paf 241: break;
242: }
243: case OP_REDUCE_SWPOOL:
244: {
245: // from "$a $b" part of expression taking only string value,
246: // ignoring any other content of wcontext
247: String *string=wcontext->get_string();
1.80 ! paf 248: Value *value;
! 249: if(string)
! 250: value=NEW VString(*string);
! 251: else
! 252: NEW VUnknown(pool());
1.50 paf 253: wcontext=static_cast<WContext *>(POP());
1.49 paf 254: PUSH(value);
255: break;
256: }
257:
1.51 paf 258: // CALL
1.28 paf 259: case OP_GET_METHOD_FRAME:
260: {
1.32 paf 261: Value *value=POP();
1.70 paf 262: // info: this one's always method-junction, not a code-junction
1.32 paf 263: Junction *junction=value->get_junction();
1.31 paf 264: if(!junction)
1.28 paf 265: THROW(0,0,
1.42 paf 266: &value->name(),
1.39 paf 267: "type is '%s', can not call it (must be method or junction)",
1.38 paf 268: value->type());
1.70 paf 269:
1.34 paf 270: VMethodFrame *frame=NEW VMethodFrame(pool(), *junction);
1.63 paf 271: frame->set_name(junction->self.name());
1.28 paf 272: PUSH(frame);
273: break;
274: }
275: case OP_STORE_PARAM:
276: {
277: Value *value=POP();
1.73 paf 278: VMethodFrame *frame=static_cast<VMethodFrame *>(stack.top_value());
1.28 paf 279: frame->store_param(value);
1.29 paf 280: break;
281: }
282:
283: case OP_CALL:
284: {
1.46 paf 285: fprintf(stderr, "->\n");
1.34 paf 286: VMethodFrame *frame=static_cast<VMethodFrame *>(POP());
287: frame->fill_unspecified_params();
1.45 paf 288: PUSH(self);
289: PUSH(root);
290: PUSH(rcontext);
291: PUSH(wcontext);
292:
1.38 paf 293: VClass *called_class=frame->junction.self.get_class();
1.74 paf 294: // is context object or class & is it my class or my parent's class?
295: VClass *read_class=rcontext->get_class();
296: if(read_class && read_class->is_or_derived_from(*called_class)) // yes
297: self=rcontext; // class dynamic call
1.75 paf 298: else // no, not me or relative of mine (total stranger)
299: if(wcontext->constructing()) { // constructing?
300: // yes, constructor call: $some(^class:method(..))
1.80 ! paf 301: self=NEW VObject(pool(), *called_class);
1.74 paf 302: frame->write(*self);
1.75 paf 303: } else
304: self=&frame->junction.self; // no, static or simple dynamic call
305:
1.45 paf 306: frame->set_self(*self);
1.29 paf 307: root=rcontext=wcontext=frame;
1.47 paf 308: {
1.48 paf 309: // take object or class from any wrappers
310: VAliased *aliased=self->get_aliased();
311: // substitute class alias to the class they are called AS
1.47 paf 312: Temp_alias temp_alias(*aliased, *frame->junction.vclass);
1.68 paf 313:
1.69 paf 314: Method& method=*frame->junction.method;
1.80 ! paf 315: if(method.native_code) { // native code?
! 316: method.check_actual_numbered_params(frame->numbered_params());
1.70 paf 317: (*method.native_code)(*this, frame->numbered_params()); // execute it
1.80 ! paf 318: } else // parser code
1.69 paf 319: execute(*method.parser_code); // execute it
1.47 paf 320: }
1.36 paf 321: Value *value=wcontext->result();
1.45 paf 322:
323: wcontext=static_cast<WContext *>(POP());
324: rcontext=POP();
325: root=POP();
326: self=static_cast<VAliased *>(POP());
1.62 paf 327:
1.61 paf 328: PUSH(value);
1.46 paf 329: fprintf(stderr, "<-returned");
1.49 paf 330: break;
331: }
332:
1.55 paf 333: // expression ops: unary
334: case OP_NEG:
335: {
336: Value *operand=POP();
1.80 ! paf 337: Value *value=NEW VDouble(pool(), -operand->get_double());
1.55 paf 338: PUSH(value);
339: break;
340: }
341: case OP_INV:
342: {
343: Value *operand=POP();
1.80 ! paf 344: Value *value=NEW VDouble(pool(), ~static_cast<int>(operand->get_double()));
1.55 paf 345: PUSH(value);
346: break;
347: }
348: case OP_NOT:
349: {
350: Value *operand=POP();
1.78 paf 351: Value *value=NEW VBool(pool(), !operand->get_bool());
1.55 paf 352: PUSH(value);
353: break;
354: }
1.62 paf 355: case OP_DEF:
356: {
357: Value *operand=POP();
1.78 paf 358: Value *value=NEW VBool(pool(), operand->get_defined());
1.62 paf 359: PUSH(value);
360: break;
361: }
362: case OP_IN:
363: {
364: Value *operand=POP();
1.78 paf 365: Value *value=NEW VBool(pool(), true/*TODO*/);
1.62 paf 366: PUSH(value);
367: break;
368: }
369: case OP_FEXISTS:
370: {
371: Value *operand=POP();
1.78 paf 372: Value *value=NEW VBool(pool(), true/*TODO*/);
1.62 paf 373: PUSH(value);
374: break;
375: }
1.55 paf 376:
377: // expression ops: binary
378: case OP_SUB:
1.53 paf 379: {
1.61 paf 380: Value *b=POP(); Value *a=POP();
1.80 ! paf 381: Value *value=NEW VDouble(pool(), a->get_double() - b->get_double());
1.53 paf 382: PUSH(value);
383: break;
384: }
1.55 paf 385: case OP_ADD:
1.53 paf 386: {
1.61 paf 387: Value *b=POP(); Value *a=POP();
1.80 ! paf 388: Value *value=NEW VDouble(pool(), a->get_double() + b->get_double());
1.53 paf 389: PUSH(value);
390: break;
391: }
1.49 paf 392: case OP_MUL:
393: {
1.61 paf 394: Value *b=POP(); Value *a=POP();
1.80 ! paf 395: Value *value=NEW VDouble(pool(), a->get_double() * b->get_double());
1.53 paf 396: PUSH(value);
397: break;
398: }
399: case OP_DIV:
400: {
1.61 paf 401: Value *b=POP(); Value *a=POP();
1.80 ! paf 402: Value *value=NEW VDouble(pool(), a->get_double() / b->get_double());
1.54 paf 403: PUSH(value);
404: break;
405: }
1.55 paf 406: case OP_MOD:
407: {
1.61 paf 408: Value *b=POP(); Value *a=POP();
1.78 paf 409: Value *value=NEW VDouble(pool(),
1.55 paf 410: static_cast<int>(a->get_double()) %
1.78 paf 411: static_cast<int>(b->get_double()));
1.55 paf 412: PUSH(value);
413: break;
414: }
415: case OP_BIN_AND:
1.54 paf 416: {
1.61 paf 417: Value *b=POP(); Value *a=POP();
1.78 paf 418: Value *value=NEW VDouble(pool(),
1.55 paf 419: static_cast<int>(a->get_double()) &
1.78 paf 420: static_cast<int>(b->get_double()));
1.54 paf 421: PUSH(value);
422: break;
423: }
1.55 paf 424: case OP_BIN_OR:
1.54 paf 425: {
1.61 paf 426: Value *b=POP(); Value *a=POP();
1.78 paf 427: Value *value=NEW VDouble(pool(),
1.55 paf 428: static_cast<int>(a->get_double()) |
1.78 paf 429: static_cast<int>(b->get_double()));
1.55 paf 430: PUSH(value);
431: break;
432: }
1.56 paf 433: case OP_BIN_XOR:
434: {
1.61 paf 435: Value *b=POP(); Value *a=POP();
1.78 paf 436: Value *value=NEW VDouble(pool(),
1.56 paf 437: static_cast<int>(a->get_double()) ^
1.78 paf 438: static_cast<int>(b->get_double()));
1.56 paf 439: PUSH(value);
440: break;
441: }
1.55 paf 442: case OP_LOG_AND:
443: {
1.61 paf 444: Value *b=POP(); Value *a=POP();
1.78 paf 445: Value *value=NEW VBool(pool(), a->get_bool() && b->get_bool());
1.55 paf 446: PUSH(value);
447: break;
448: }
449: case OP_LOG_OR:
450: {
1.61 paf 451: Value *b=POP(); Value *a=POP();
1.78 paf 452: Value *value=NEW VBool(pool(), a->get_bool() || b->get_bool());
1.56 paf 453: PUSH(value);
454: break;
455: }
456: case OP_LOG_XOR:
457: {
1.61 paf 458: Value *b=POP(); Value *a=POP();
1.78 paf 459: Value *value=NEW VBool(pool(), a->get_bool() ^ b->get_bool());
1.55 paf 460: PUSH(value);
461: break;
462: }
463: case OP_NUM_LT:
464: {
1.61 paf 465: Value *b=POP(); Value *a=POP();
1.78 paf 466: Value *value=NEW VBool(pool(), a->get_double() < b->get_double());
1.55 paf 467: PUSH(value);
468: break;
469: }
470: case OP_NUM_GT:
471: {
1.61 paf 472: Value *b=POP(); Value *a=POP();
1.78 paf 473: Value *value=NEW VBool(pool(), a->get_double() > b->get_double());
1.55 paf 474: PUSH(value);
475: break;
476: }
477: case OP_NUM_LE:
478: {
1.61 paf 479: Value *b=POP(); Value *a=POP();
1.78 paf 480: Value *value=NEW VBool(pool(), a->get_double() <= b->get_double());
1.55 paf 481: PUSH(value);
482: break;
483: }
484: case OP_NUM_GE:
485: {
1.61 paf 486: Value *b=POP(); Value *a=POP();
1.78 paf 487: Value *value=NEW VBool(pool(), a->get_double() >= b->get_double());
1.55 paf 488: PUSH(value);
489: break;
490: }
491: case OP_NUM_EQ:
492: {
1.61 paf 493: Value *b=POP(); Value *a=POP();
1.78 paf 494: Value *value=NEW VBool(pool(), a->get_double() == b->get_double());
1.55 paf 495: PUSH(value);
496: break;
497: }
498: case OP_NUM_NE:
499: {
1.61 paf 500: Value *b=POP(); Value *a=POP();
1.78 paf 501: Value *value=NEW VBool(pool(), a->get_double() != b->get_double());
1.54 paf 502: PUSH(value);
503: break;
504: }
1.58 paf 505: case OP_STR_LT:
506: {
1.61 paf 507: Value *b=POP(); Value *a=POP();
1.78 paf 508: Value *value=NEW VBool(pool(), a->as_string() < b->as_string());
1.58 paf 509: PUSH(value);
510: break;
511: }
512: case OP_STR_GT:
513: {
1.61 paf 514: Value *b=POP(); Value *a=POP();
1.78 paf 515: Value *value=NEW VBool(pool(), a->as_string() > b->as_string());
1.58 paf 516: PUSH(value);
517: break;
518: }
1.55 paf 519: case OP_STR_LE:
1.58 paf 520: {
1.61 paf 521: Value *b=POP(); Value *a=POP();
1.78 paf 522: Value *value=NEW VBool(pool(), a->as_string() <= b->as_string());
1.58 paf 523: PUSH(value);
524: break;
525: }
1.55 paf 526: case OP_STR_GE:
1.54 paf 527: {
1.61 paf 528: Value *b=POP(); Value *a=POP();
1.78 paf 529: Value *value=NEW VBool(pool(), a->as_string() >= b->as_string());
1.58 paf 530: PUSH(value);
531: break;
532: }
533: case OP_STR_EQ:
534: {
1.61 paf 535: Value *b=POP(); Value *a=POP();
1.78 paf 536: Value *value=NEW VBool(pool(), a->as_string() == b->as_string());
1.58 paf 537: PUSH(value);
538: break;
539: }
540: case OP_STR_NE:
541: {
1.61 paf 542: Value *b=POP(); Value *a=POP();
1.78 paf 543: Value *value=NEW VBool(pool(), a->as_string() != b->as_string());
1.49 paf 544: PUSH(value);
1.28 paf 545: break;
546: }
547:
1.11 paf 548: default:
1.67 paf 549: THROW(0,0,
550: 0,
551: "unhandled '%s' opcode", opcode_name[op.code]);
1.11 paf 552: }
1.46 paf 553: fprintf(stderr, "\n");
1.11 paf 554: }
1.1 paf 555: }
1.17 paf 556:
557: Value *Request::get_element() {
1.32 paf 558: String& name=POP_NAME();
1.24 paf 559: Value *ncontext=POP();
1.32 paf 560: Value *value=ncontext->get_element(name);
1.21 paf 561:
1.76 paf 562: if(value)
563: value=&autocalc(*value); // autocalc possible code-junction
564: else {
565: value=NEW VUnknown(pool());
566: value->set_name(name);
567: }
1.63 paf 568:
1.17 paf 569: return value;
1.34 paf 570: }
1.70 paf 571:
1.71 paf 572: Value& Request::autocalc(Value& value, bool make_string) {
1.70 paf 573: Junction *junction=value.get_junction();
574: if(junction && junction->code) { // is it a code-junction?
575: // autocalc it
576: fprintf(stderr, "ja->\n");
577: PUSH(self);
578: PUSH(root);
579: PUSH(rcontext);
580: PUSH(wcontext);
581:
1.71 paf 582: WContext *frame;
583: if(make_string) {
584: // almost plain wwrapper about junction wcontext,
585: // BUT intercepts string writes
586: frame=NEW VCodeFrame(pool(), *junction->wcontext);
587: } else {
588: // plain wwrapper
589: frame=NEW WWrapper(pool(), 0 /* empty */, false /*not constructing*/);
590: }
591:
592: wcontext=frame;
1.70 paf 593: self=&junction->self;
594: root=junction->root;
595: rcontext=junction->rcontext;
596: execute(*junction->code);
1.71 paf 597: Value *result;
598: if(make_string) {
599: // CodeFrame soul:
600: // string writes were intercepted
601: // returning them as the result of getting code-junction
602: result=NEW VString(*frame->get_string());
603: } else
604: result=frame->result();
1.70 paf 605:
606: wcontext=static_cast<WContext *>(POP());
607: rcontext=POP();
608: root=POP();
609: self=static_cast<VAliased *>(POP());
610:
611: fprintf(stderr, "<-ja returned");
1.71 paf 612: return *result;
1.70 paf 613: } else
614: return value;
615: }
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