Annotation of parser3/src/main/execute.C, revision 1.56
1.1 paf 1: /*
1.56 ! paf 2: $Id: execute.C,v 1.55 2001/03/06 15:55:35 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
1.52 paf 26: "VALUE", "CODE", "CLASS",
1.49 paf 27:
28: // actions
1.51 paf 29: "WITH_SELF", "WITH_ROOT", "WITH_READ", "WITH_WRITE",
1.1 paf 30: "CONSTRUCT",
1.18 paf 31: "WRITE",
32: "GET_ELEMENT", "GET_ELEMENT__WRITE",
1.1 paf 33: "CREATE_EWPOOL", "REDUCE_EWPOOL",
34: "CREATE_RWPOOL", "REDUCE_RWPOOL",
1.49 paf 35: "CREATE_SWPOOL", "REDUCE_SWPOOL",
1.1 paf 36: "GET_METHOD_FRAME",
37: "STORE_PARAM",
1.51 paf 38: "CALL",
1.49 paf 39:
40: // expression ops: unary
41: "NEG", "INV", "NOT", "DEF", "IN", "FEXISTS",
42: // expression ops: binary
43: "SUB", "ADD", "MUL", "DIV", "MOD",
1.56 ! paf 44: "BIN_AND", "BIN_OR", "BIN_XOR",
! 45: "LOG_AND", "LOG_OR", "LOG_XOR",
1.49 paf 46: "NUM_LT", "NUM_GT", "NUM_LE", "NUM_GE", "NUM_EQ", "NUM_NE",
1.55 paf 47: "STR_LT", "STR_GT", "STR_LE", "STR_GE", "STR_EQ", "STR_NE"
1.1 paf 48: };
49:
1.9 paf 50: void dump(int level, const Array& ops) {
1.23 paf 51: if(0){
52: int size=ops.size();
1.46 paf 53: //fprintf(stderr, "size=%d\n", size);
1.23 paf 54: for(int i=0; i<size; i++) {
55: Operation op;
56: op.cast=ops.quick_get(i);
1.46 paf 57: fprintf(stderr, "%8X\n", op.cast);
1.23 paf 58: }
59: }
60:
1.9 paf 61: int size=ops.size();
1.46 paf 62: //fprintf(stderr, "size=%d\n", size);
1.1 paf 63: for(int i=0; i<size; i++) {
1.23 paf 64: Operation op;
65: op.cast=ops.quick_get(i);
1.46 paf 66: fprintf(stderr, "%*s%s", level*4, "", opcode_name[op.code]);
1.1 paf 67:
1.52 paf 68: if(op.code==OP_VALUE) {
69: Value *value=static_cast<Value *>(ops.quick_get(++i));
70: fprintf(stderr, " \"%s\" %s", value->get_string()->cstr(), value->type());
1.15 paf 71: }
1.38 paf 72: if(op.code==OP_CLASS) {
73: VClass *vclass=static_cast<VClass *>(ops.quick_get(++i));
1.46 paf 74: fprintf(stderr, " \"%s\"", vclass->name().cstr());
1.38 paf 75: }
1.46 paf 76: fprintf(stderr, "\n");
1.1 paf 77:
1.32 paf 78: if(op.code==OP_CODE) {
1.10 paf 79: const Array *local_ops=reinterpret_cast<const Array *>(ops.quick_get(++i));
1.9 paf 80: dump(level+1, *local_ops);
1.1 paf 81: }
82: }
83: }
84:
1.32 paf 85: void Request::execute(const Array& ops) {
1.30 paf 86: if(1) {
1.51 paf 87: fputs("source----------------------------\n", stderr);
1.12 paf 88: dump(0, ops);
1.51 paf 89: fputs("execution-------------------------\n", stderr);
1.12 paf 90: }
91:
1.11 paf 92: int size=ops.size();
1.46 paf 93: //fprintf(stderr, "size=%d\n", size);
1.11 paf 94: for(int i=0; i<size; i++) {
1.23 paf 95: Operation op;
96: op.cast=ops.quick_get(i);
1.46 paf 97: fprintf(stderr, "%d:%s", stack.top(), opcode_name[op.code]);
1.11 paf 98:
1.23 paf 99: switch(op.code) {
1.51 paf 100: // param in next instruction
1.52 paf 101: case OP_VALUE:
1.32 paf 102: {
1.52 paf 103: Value *value=static_cast<Value *>(ops.quick_get(++i));
104: fprintf(stderr, " \"%s\" %s", value->get_string()->cstr(), value->type());
105: PUSH(value);
1.32 paf 106: break;
107: }
108: case OP_CODE:
109: {
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);
1.32 paf 113: Junction& j=*NEW Junction(pool(),
1.45 paf 114: *self, 0, 0,
1.34 paf 115: root,rcontext,wcontext,local_ops);
1.32 paf 116:
117: Value *value=NEW VJunction(j);
118: PUSH(value);
119: break;
120: }
1.38 paf 121: case OP_CLASS:
122: {
123: VClass *vclass=static_cast<VClass *>(ops.quick_get(++i));
1.46 paf 124: fprintf(stderr, " \"%s\"", vclass->name().cstr());
1.38 paf 125: PUSH(vclass);
126: break;
127: }
1.32 paf 128:
1.51 paf 129: // OP_WITH
1.37 paf 130: case OP_WITH_SELF:
131: {
132: PUSH(self);
133: break;
134: }
135: case OP_WITH_ROOT:
1.11 paf 136: {
1.37 paf 137: PUSH(root);
1.13 paf 138: break;
1.11 paf 139: }
1.15 paf 140: case OP_WITH_READ:
141: {
1.24 paf 142: PUSH(rcontext);
1.20 paf 143: break;
144: }
1.37 paf 145: case OP_WITH_WRITE:
1.20 paf 146: {
1.37 paf 147: PUSH(wcontext);
1.20 paf 148: break;
149: }
1.37 paf 150:
1.51 paf 151: // OTHER ACTIONS BUT WITHs
1.37 paf 152: case OP_CONSTRUCT:
1.20 paf 153: {
1.37 paf 154: Value *value=POP();
155: String& name=POP_NAME();
156: Value *ncontext=POP();
157: value->set_name(name);
158: ncontext->put_element(name, value);
1.15 paf 159: break;
160: }
1.18 paf 161: case OP_WRITE:
1.13 paf 162: {
1.24 paf 163: Value *value=POP();
1.14 paf 164: wcontext->write(value);
1.13 paf 165: break;
1.14 paf 166: }
1.13 paf 167:
1.15 paf 168: case OP_GET_ELEMENT:
1.11 paf 169: {
1.17 paf 170: Value *value=get_element();
1.24 paf 171: PUSH(value);
1.17 paf 172: break;
173: }
174:
1.18 paf 175: case OP_GET_ELEMENT__WRITE:
1.17 paf 176: {
177: Value *value=get_element();
178: wcontext->write(value);
179: break;
180: }
181:
1.32 paf 182:
1.17 paf 183: case OP_CREATE_EWPOOL:
184: {
1.24 paf 185: PUSH(wcontext);
1.43 paf 186: wcontext=NEW WWrapper(pool(), 0 /* empty */, true /* constructing */);
1.17 paf 187: break;
188: }
189: case OP_REDUCE_EWPOOL:
190: {
1.36 paf 191: Value *value=wcontext->result();
1.25 paf 192: wcontext=static_cast<WContext *>(POP());
1.24 paf 193: PUSH(value);
1.13 paf 194: break;
1.15 paf 195: }
1.13 paf 196:
1.26 paf 197: case OP_CREATE_RWPOOL:
198: {
199: Value *ncontext=POP();
200: PUSH(rcontext);
201: rcontext=ncontext;
202: PUSH(wcontext);
1.43 paf 203: wcontext=NEW WWrapper(pool(), ncontext, false /* not constructing */);
1.26 paf 204: break;
205: }
206: case OP_REDUCE_RWPOOL:
207: {
208: String *string=wcontext->get_string();
1.50 paf 209: Value *value=string?NEW VString(*string):NEW VString(pool());
1.26 paf 210: wcontext=static_cast<WContext *>(POP());
211: rcontext=POP();
212: PUSH(value);
213: break;
214: }
1.49 paf 215: case OP_CREATE_SWPOOL:
216: {
217: PUSH(wcontext);
1.50 paf 218: wcontext=NEW WWrapper(pool(), 0 /* empty */, false /* not constructing */);
1.49 paf 219: break;
220: }
221: case OP_REDUCE_SWPOOL:
222: {
223: // from "$a $b" part of expression taking only string value,
224: // ignoring any other content of wcontext
225: String *string=wcontext->get_string();
1.50 paf 226: Value *value=string?NEW VString(*string):NEW VString(pool());
227: wcontext=static_cast<WContext *>(POP());
1.49 paf 228: PUSH(value);
229: break;
230: }
231:
1.51 paf 232: // CALL
1.28 paf 233: case OP_GET_METHOD_FRAME:
234: {
1.32 paf 235: Value *value=POP();
1.28 paf 236: // [self/class?;params;local;code/native_code](name)
1.32 paf 237: Junction *junction=value->get_junction();
1.31 paf 238: if(!junction)
1.28 paf 239: THROW(0,0,
1.42 paf 240: &value->name(),
1.39 paf 241: "type is '%s', can not call it (must be method or junction)",
1.38 paf 242: value->type());
1.28 paf 243: //unless(method) method=operators.get_method[...;code/native_code](name)
1.34 paf 244: VMethodFrame *frame=NEW VMethodFrame(pool(), *junction);
1.28 paf 245: PUSH(frame);
246: break;
247: }
248: case OP_STORE_PARAM:
249: {
250: Value *value=POP();
1.34 paf 251: VMethodFrame *frame=static_cast<VMethodFrame *>(stack[0]);
1.28 paf 252: frame->store_param(value);
1.29 paf 253: break;
254: }
255:
256: case OP_CALL:
257: {
1.46 paf 258: fprintf(stderr, "->\n");
1.34 paf 259: VMethodFrame *frame=static_cast<VMethodFrame *>(POP());
260: frame->fill_unspecified_params();
1.45 paf 261: PUSH(self);
262: PUSH(root);
263: PUSH(rcontext);
264: PUSH(wcontext);
265:
1.38 paf 266: VClass *called_class=frame->junction.self.get_class();
1.43 paf 267: // constructing?
268: if(wcontext->constructing()) { // yes
1.41 paf 269: // constructor call: $some(^class:method(..))
1.50 paf 270: frame->write(self=NEW VObject(pool(), *called_class));
1.43 paf 271: } else { // no
1.47 paf 272: // context is object or class & is it my class or my parent's class?
1.44 paf 273: VClass *read_class=rcontext->get_class();
274: if(read_class && read_class->is_or_derived_from(*called_class)) // yes
1.46 paf 275: self=rcontext; // class dynamic call
1.44 paf 276: else // no
277: self=&frame->junction.self; // static or simple dynamic call
1.38 paf 278: }
1.45 paf 279: frame->set_self(*self);
1.29 paf 280: root=rcontext=wcontext=frame;
1.47 paf 281: {
1.48 paf 282: // take object or class from any wrappers
283: VAliased *aliased=self->get_aliased();
284: // substitute class alias to the class they are called AS
1.47 paf 285: Temp_alias temp_alias(*aliased, *frame->junction.vclass);
286: execute(frame->junction.method->code);
287: }
1.36 paf 288: Value *value=wcontext->result();
1.45 paf 289:
290: wcontext=static_cast<WContext *>(POP());
291: rcontext=POP();
292: root=POP();
293: self=static_cast<VAliased *>(POP());
1.29 paf 294: wcontext->write(value);
1.46 paf 295: fprintf(stderr, "<-returned");
1.49 paf 296: break;
297: }
298:
1.55 paf 299: // expression ops: unary
300: case OP_NEG:
301: {
302: Value *operand=POP();
303: Value *value=NEW VDouble(pool(), -operand->get_double());
304: PUSH(value);
305: break;
306: }
307: case OP_INV:
308: {
309: Value *operand=POP();
310: Value *value=NEW VDouble(pool(),
311: ~static_cast<int>(operand->get_double()));
312: PUSH(value);
313: break;
314: }
315: case OP_NOT:
316: {
317: Value *operand=POP();
318: Value *value=NEW VBool(pool(), !operand->get_bool());
319: PUSH(value);
320: break;
321: }
322: //todo: def in fexists
323:
324: // expression ops: binary
325: case OP_SUB:
1.53 paf 326: {
327: Value *b=POP();
328: Value *a=POP();
329: Value *value=NEW VDouble(pool(),
1.55 paf 330: a->get_double() -
1.53 paf 331: b->get_double());
332: PUSH(value);
333: break;
334: }
1.55 paf 335: case OP_ADD:
1.53 paf 336: {
337: Value *b=POP();
338: Value *a=POP();
339: Value *value=NEW VDouble(pool(),
1.55 paf 340: a->get_double() +
1.53 paf 341: b->get_double());
342: PUSH(value);
343: break;
344: }
1.49 paf 345: case OP_MUL:
346: {
347: Value *b=POP();
348: Value *a=POP();
349: Value *value=NEW VDouble(pool(),
350: a->get_double() *
1.53 paf 351: b->get_double());
352: PUSH(value);
353: break;
354: }
355: case OP_DIV:
356: {
357: Value *b=POP();
358: Value *a=POP();
359: Value *value=NEW VDouble(pool(),
360: a->get_double() /
1.49 paf 361: b->get_double());
1.54 paf 362: PUSH(value);
363: break;
364: }
1.55 paf 365: case OP_MOD:
366: {
367: Value *b=POP();
368: Value *a=POP();
369: Value *value=NEW VDouble(pool(),
370: static_cast<int>(a->get_double()) %
371: static_cast<int>(b->get_double()));
372: PUSH(value);
373: break;
374: }
375: case OP_BIN_AND:
1.54 paf 376: {
1.55 paf 377: Value *b=POP();
378: Value *a=POP();
379: Value *value=NEW VDouble(pool(),
380: static_cast<int>(a->get_double()) &
381: static_cast<int>(b->get_double()));
1.54 paf 382: PUSH(value);
383: break;
384: }
1.55 paf 385: case OP_BIN_OR:
1.54 paf 386: {
1.55 paf 387: Value *b=POP();
388: Value *a=POP();
1.54 paf 389: Value *value=NEW VDouble(pool(),
1.55 paf 390: static_cast<int>(a->get_double()) |
391: static_cast<int>(b->get_double()));
392: PUSH(value);
393: break;
394: }
1.56 ! paf 395: case OP_BIN_XOR:
! 396: {
! 397: Value *b=POP();
! 398: Value *a=POP();
! 399: Value *value=NEW VDouble(pool(),
! 400: static_cast<int>(a->get_double()) ^
! 401: static_cast<int>(b->get_double()));
! 402: PUSH(value);
! 403: break;
! 404: }
1.55 paf 405: case OP_LOG_AND:
406: {
407: Value *b=POP();
408: Value *a=POP();
409: Value *value=NEW VBool(pool(),
410: a->get_bool() &&
411: b->get_bool());
412: PUSH(value);
413: break;
414: }
415: case OP_LOG_OR:
416: {
417: Value *b=POP();
418: Value *a=POP();
419: Value *value=NEW VBool(pool(),
420: a->get_bool() ||
1.56 ! paf 421: b->get_bool());
! 422: PUSH(value);
! 423: break;
! 424: }
! 425: case OP_LOG_XOR:
! 426: {
! 427: Value *b=POP();
! 428: Value *a=POP();
! 429: Value *value=NEW VBool(pool(),
! 430: a->get_bool() ^
1.55 paf 431: b->get_bool());
432: PUSH(value);
433: break;
434: }
435: case OP_NUM_LT:
436: {
437: Value *b=POP();
438: Value *a=POP();
439: Value *value=NEW VBool(pool(),
440: a->get_double() <
441: b->get_double());
442: PUSH(value);
443: break;
444: }
445: case OP_NUM_GT:
446: {
447: Value *b=POP();
448: Value *a=POP();
449: Value *value=NEW VBool(pool(),
450: a->get_double() >
451: b->get_double());
452: PUSH(value);
453: break;
454: }
455: case OP_NUM_LE:
456: {
457: Value *b=POP();
458: Value *a=POP();
459: Value *value=NEW VBool(pool(),
460: a->get_double() <=
461: b->get_double());
462: PUSH(value);
463: break;
464: }
465: case OP_NUM_GE:
466: {
467: Value *b=POP();
468: Value *a=POP();
469: Value *value=NEW VBool(pool(),
470: a->get_double() >=
471: b->get_double());
472: PUSH(value);
473: break;
474: }
475: case OP_NUM_EQ:
476: {
477: Value *b=POP();
478: Value *a=POP();
479: Value *value=NEW VBool(pool(),
480: a->get_double() ==
481: b->get_double());
482: PUSH(value);
483: break;
484: }
485: case OP_NUM_NE:
486: {
487: Value *b=POP();
488: Value *a=POP();
489: Value *value=NEW VBool(pool(),
490: a->get_double() !=
491: b->get_double());
1.54 paf 492: PUSH(value);
493: break;
494: }
1.55 paf 495: case OP_STR_LT:
496: case OP_STR_GT:
497: case OP_STR_LE:
498: case OP_STR_GE:
499: case OP_STR_EQ:
500: case OP_STR_NE:
1.54 paf 501: {
1.55 paf 502: Value *b=POP();
503: Value *a=POP();
504: Value *value=NEW VBool(pool(),
505: /*a->get_string() @
506: b->get_string()*/false);
1.49 paf 507: PUSH(value);
1.28 paf 508: break;
509: }
510:
1.11 paf 511: default:
1.46 paf 512: fprintf(stderr, "\tTODO");
1.11 paf 513: break;
514: }
1.46 paf 515: fprintf(stderr, "\n");
1.11 paf 516: }
1.1 paf 517: }
1.17 paf 518:
519: Value *Request::get_element() {
1.32 paf 520: String& name=POP_NAME();
1.24 paf 521: Value *ncontext=POP();
1.32 paf 522: Value *value=ncontext->get_element(name);
1.21 paf 523:
1.32 paf 524: if(value) {
525: Junction *junction=value->get_junction();
1.36 paf 526: if(junction && junction->code) { // is it a code-junction?
1.32 paf 527: // autocalc it
1.46 paf 528: fprintf(stderr, "ja->\n");
1.45 paf 529: PUSH(self);
530: PUSH(root);
531: PUSH(rcontext);
532: PUSH(wcontext);
533:
1.34 paf 534: // almost plain wwrapper about junction wcontext,
535: // BUT intercepts string writes
536: VCodeFrame frame(pool(), *junction->wcontext); wcontext=&frame;
537: self=&junction->self;
1.32 paf 538: root=junction->root;
539: rcontext=junction->rcontext;
540: execute(*junction->code);
1.35 paf 541: // CodeFrame soul:
1.36 paf 542: // string writes were intercepted
543: // returning them as the result of getting code-junction
1.42 paf 544: value=NEW VString(*frame.get_string());
1.45 paf 545:
546: wcontext=static_cast<WContext *>(POP());
547: rcontext=POP();
548: root=POP();
549: self=static_cast<VAliased *>(POP());
1.46 paf 550: fprintf(stderr, "<-ja returned");
1.32 paf 551: }
552: } else {
1.23 paf 553: value=NEW VUnknown(pool());
1.25 paf 554: value->set_name(name);
1.22 paf 555: }
1.17 paf 556: return value;
1.34 paf 557: }
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