Annotation of parser3/src/main/execute.C, revision 1.68
1.1 paf 1: /*
1.68 ! paf 2: $Id: execute.C,v 1.67 2001/03/08 10:13:26 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",
1.1 paf 31: "CONSTRUCT",
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);
1.63 paf 95: fprintf(stderr, "%d:%s", stack.top()+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: {
1.63 paf 108: VMethodFrame *frame=static_cast<VMethodFrame *>(stack[stack.top()]);
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
1.37 paf 161: case OP_CONSTRUCT:
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: }
1.18 paf 170: case OP_WRITE:
1.13 paf 171: {
1.24 paf 172: Value *value=POP();
1.14 paf 173: wcontext->write(value);
1.13 paf 174: break;
1.14 paf 175: }
1.13 paf 176:
1.15 paf 177: case OP_GET_ELEMENT:
1.11 paf 178: {
1.17 paf 179: Value *value=get_element();
1.24 paf 180: PUSH(value);
1.17 paf 181: break;
182: }
183:
1.18 paf 184: case OP_GET_ELEMENT__WRITE:
1.17 paf 185: {
186: Value *value=get_element();
187: wcontext->write(value);
188: break;
189: }
190:
1.32 paf 191:
1.17 paf 192: case OP_CREATE_EWPOOL:
193: {
1.24 paf 194: PUSH(wcontext);
1.43 paf 195: wcontext=NEW WWrapper(pool(), 0 /* empty */, true /* constructing */);
1.17 paf 196: break;
197: }
198: case OP_REDUCE_EWPOOL:
199: {
1.36 paf 200: Value *value=wcontext->result();
1.25 paf 201: wcontext=static_cast<WContext *>(POP());
1.24 paf 202: PUSH(value);
1.13 paf 203: break;
1.15 paf 204: }
1.13 paf 205:
1.26 paf 206: case OP_CREATE_RWPOOL:
207: {
208: Value *ncontext=POP();
209: PUSH(rcontext);
210: rcontext=ncontext;
211: PUSH(wcontext);
1.43 paf 212: wcontext=NEW WWrapper(pool(), ncontext, false /* not constructing */);
1.26 paf 213: break;
214: }
215: case OP_REDUCE_RWPOOL:
216: {
217: String *string=wcontext->get_string();
1.50 paf 218: Value *value=string?NEW VString(*string):NEW VString(pool());
1.26 paf 219: wcontext=static_cast<WContext *>(POP());
220: rcontext=POP();
221: PUSH(value);
222: break;
223: }
1.49 paf 224: case OP_CREATE_SWPOOL:
225: {
226: PUSH(wcontext);
1.50 paf 227: wcontext=NEW WWrapper(pool(), 0 /* empty */, false /* not constructing */);
1.49 paf 228: break;
229: }
230: case OP_REDUCE_SWPOOL:
231: {
232: // from "$a $b" part of expression taking only string value,
233: // ignoring any other content of wcontext
234: String *string=wcontext->get_string();
1.50 paf 235: Value *value=string?NEW VString(*string):NEW VString(pool());
236: wcontext=static_cast<WContext *>(POP());
1.49 paf 237: PUSH(value);
238: break;
239: }
240:
1.51 paf 241: // CALL
1.28 paf 242: case OP_GET_METHOD_FRAME:
243: {
1.32 paf 244: Value *value=POP();
1.28 paf 245: // [self/class?;params;local;code/native_code](name)
1.32 paf 246: Junction *junction=value->get_junction();
1.31 paf 247: if(!junction)
1.28 paf 248: THROW(0,0,
1.42 paf 249: &value->name(),
1.39 paf 250: "type is '%s', can not call it (must be method or junction)",
1.38 paf 251: value->type());
1.28 paf 252: //unless(method) method=operators.get_method[...;code/native_code](name)
1.34 paf 253: VMethodFrame *frame=NEW VMethodFrame(pool(), *junction);
1.63 paf 254: frame->set_name(junction->self.name());
1.28 paf 255: PUSH(frame);
256: break;
257: }
258: case OP_STORE_PARAM:
259: {
260: Value *value=POP();
1.34 paf 261: VMethodFrame *frame=static_cast<VMethodFrame *>(stack[0]);
1.28 paf 262: frame->store_param(value);
1.29 paf 263: break;
264: }
265:
266: case OP_CALL:
267: {
1.46 paf 268: fprintf(stderr, "->\n");
1.34 paf 269: VMethodFrame *frame=static_cast<VMethodFrame *>(POP());
270: frame->fill_unspecified_params();
1.45 paf 271: PUSH(self);
272: PUSH(root);
273: PUSH(rcontext);
274: PUSH(wcontext);
275:
1.38 paf 276: VClass *called_class=frame->junction.self.get_class();
1.43 paf 277: // constructing?
278: if(wcontext->constructing()) { // yes
1.41 paf 279: // constructor call: $some(^class:method(..))
1.50 paf 280: frame->write(self=NEW VObject(pool(), *called_class));
1.43 paf 281: } else { // no
1.47 paf 282: // context is object or class & is it my class or my parent's class?
1.44 paf 283: VClass *read_class=rcontext->get_class();
284: if(read_class && read_class->is_or_derived_from(*called_class)) // yes
1.46 paf 285: self=rcontext; // class dynamic call
1.44 paf 286: else // no
287: self=&frame->junction.self; // static or simple dynamic call
1.38 paf 288: }
1.45 paf 289: frame->set_self(*self);
1.29 paf 290: root=rcontext=wcontext=frame;
1.47 paf 291: {
1.48 paf 292: // take object or class from any wrappers
293: VAliased *aliased=self->get_aliased();
294: // substitute class alias to the class they are called AS
1.47 paf 295: Temp_alias temp_alias(*aliased, *frame->junction.vclass);
1.68 ! paf 296:
! 297: Method& method=frame->junction.method;
! 298: if(method->native_code) // native code?
! 299: (*method->native_code)(*this); // execute it
! 300: else // parser code
! 301: execute(*method->parser_code); // execute it
1.47 paf 302: }
1.36 paf 303: Value *value=wcontext->result();
1.45 paf 304:
305: wcontext=static_cast<WContext *>(POP());
306: rcontext=POP();
307: root=POP();
308: self=static_cast<VAliased *>(POP());
1.62 paf 309:
1.61 paf 310: PUSH(value);
1.46 paf 311: fprintf(stderr, "<-returned");
1.49 paf 312: break;
313: }
314:
1.55 paf 315: // expression ops: unary
316: case OP_NEG:
317: {
318: Value *operand=POP();
319: Value *value=NEW VDouble(pool(), -operand->get_double());
320: PUSH(value);
321: break;
322: }
323: case OP_INV:
324: {
325: Value *operand=POP();
1.61 paf 326: Value *value=NEW VDouble(pool(),
327: ~static_cast<int>(operand->get_double()));
1.55 paf 328: PUSH(value);
329: break;
330: }
331: case OP_NOT:
332: {
333: Value *operand=POP();
334: Value *value=NEW VBool(pool(), !operand->get_bool());
335: PUSH(value);
336: break;
337: }
1.62 paf 338: case OP_DEF:
339: {
340: Value *operand=POP();
341: Value *value=NEW VBool(pool(), operand->get_defined());
342: PUSH(value);
343: break;
344: }
345: case OP_IN:
346: {
347: Value *operand=POP();
348: Value *value=NEW VBool(pool(), true/*TODO*/);
349: PUSH(value);
350: break;
351: }
352: case OP_FEXISTS:
353: {
354: Value *operand=POP();
355: Value *value=NEW VBool(pool(), true/*TODO*/);
356: PUSH(value);
357: break;
358: }
1.55 paf 359:
360: // expression ops: binary
361: case OP_SUB:
1.53 paf 362: {
1.61 paf 363: Value *b=POP(); Value *a=POP();
364: Value *value=NEW VDouble(pool(), a->get_double() - b->get_double());
1.53 paf 365: PUSH(value);
366: break;
367: }
1.55 paf 368: case OP_ADD:
1.53 paf 369: {
1.61 paf 370: Value *b=POP(); Value *a=POP();
371: Value *value=NEW VDouble(pool(), a->get_double() + b->get_double());
1.53 paf 372: PUSH(value);
373: break;
374: }
1.49 paf 375: case OP_MUL:
376: {
1.61 paf 377: Value *b=POP(); Value *a=POP();
378: Value *value=NEW VDouble(pool(), a->get_double() * b->get_double());
1.53 paf 379: PUSH(value);
380: break;
381: }
382: case OP_DIV:
383: {
1.61 paf 384: Value *b=POP(); Value *a=POP();
385: Value *value=NEW VDouble(pool(), a->get_double() / b->get_double());
1.54 paf 386: PUSH(value);
387: break;
388: }
1.55 paf 389: case OP_MOD:
390: {
1.61 paf 391: Value *b=POP(); Value *a=POP();
1.55 paf 392: Value *value=NEW VDouble(pool(),
393: static_cast<int>(a->get_double()) %
394: static_cast<int>(b->get_double()));
395: PUSH(value);
396: break;
397: }
398: case OP_BIN_AND:
1.54 paf 399: {
1.61 paf 400: Value *b=POP(); Value *a=POP();
1.55 paf 401: Value *value=NEW VDouble(pool(),
402: static_cast<int>(a->get_double()) &
403: static_cast<int>(b->get_double()));
1.54 paf 404: PUSH(value);
405: break;
406: }
1.55 paf 407: case OP_BIN_OR:
1.54 paf 408: {
1.61 paf 409: Value *b=POP(); Value *a=POP();
1.54 paf 410: Value *value=NEW VDouble(pool(),
1.55 paf 411: static_cast<int>(a->get_double()) |
412: static_cast<int>(b->get_double()));
413: PUSH(value);
414: break;
415: }
1.56 paf 416: case OP_BIN_XOR:
417: {
1.61 paf 418: Value *b=POP(); Value *a=POP();
1.56 paf 419: Value *value=NEW VDouble(pool(),
420: static_cast<int>(a->get_double()) ^
421: static_cast<int>(b->get_double()));
422: PUSH(value);
423: break;
424: }
1.55 paf 425: case OP_LOG_AND:
426: {
1.61 paf 427: Value *b=POP(); Value *a=POP();
428: Value *value=NEW VBool(pool(), a->get_bool() && b->get_bool());
1.55 paf 429: PUSH(value);
430: break;
431: }
432: case OP_LOG_OR:
433: {
1.61 paf 434: Value *b=POP(); Value *a=POP();
435: Value *value=NEW VBool(pool(), a->get_bool() || b->get_bool());
1.56 paf 436: PUSH(value);
437: break;
438: }
439: case OP_LOG_XOR:
440: {
1.61 paf 441: Value *b=POP(); Value *a=POP();
442: Value *value=NEW VBool(pool(), a->get_bool() ^ b->get_bool());
1.55 paf 443: PUSH(value);
444: break;
445: }
446: case OP_NUM_LT:
447: {
1.61 paf 448: Value *b=POP(); Value *a=POP();
449: Value *value=NEW VBool(pool(), a->get_double() < b->get_double());
1.55 paf 450: PUSH(value);
451: break;
452: }
453: case OP_NUM_GT:
454: {
1.61 paf 455: Value *b=POP(); Value *a=POP();
456: Value *value=NEW VBool(pool(), a->get_double() > b->get_double());
1.55 paf 457: PUSH(value);
458: break;
459: }
460: case OP_NUM_LE:
461: {
1.61 paf 462: Value *b=POP(); Value *a=POP();
463: Value *value=NEW VBool(pool(), a->get_double() <= b->get_double());
1.55 paf 464: PUSH(value);
465: break;
466: }
467: case OP_NUM_GE:
468: {
1.61 paf 469: Value *b=POP(); Value *a=POP();
470: Value *value=NEW VBool(pool(), a->get_double() >= b->get_double());
1.55 paf 471: PUSH(value);
472: break;
473: }
474: case OP_NUM_EQ:
475: {
1.61 paf 476: Value *b=POP(); Value *a=POP();
477: Value *value=NEW VBool(pool(), a->get_double() == b->get_double());
1.55 paf 478: PUSH(value);
479: break;
480: }
481: case OP_NUM_NE:
482: {
1.61 paf 483: Value *b=POP(); Value *a=POP();
484: Value *value=NEW VBool(pool(), a->get_double() != b->get_double());
1.54 paf 485: PUSH(value);
486: break;
487: }
1.58 paf 488: case OP_STR_LT:
489: {
1.61 paf 490: Value *b=POP(); Value *a=POP();
491: Value *value=NEW VBool(pool(), a->as_string() < b->as_string());
1.58 paf 492: PUSH(value);
493: break;
494: }
495: case OP_STR_GT:
496: {
1.61 paf 497: Value *b=POP(); Value *a=POP();
498: Value *value=NEW VBool(pool(), a->as_string() > b->as_string());
1.58 paf 499: PUSH(value);
500: break;
501: }
1.55 paf 502: case OP_STR_LE:
1.58 paf 503: {
1.61 paf 504: Value *b=POP(); Value *a=POP();
505: Value *value=NEW VBool(pool(), a->as_string() <= b->as_string());
1.58 paf 506: PUSH(value);
507: break;
508: }
1.55 paf 509: case OP_STR_GE:
1.54 paf 510: {
1.61 paf 511: Value *b=POP(); Value *a=POP();
512: Value *value=NEW VBool(pool(), a->as_string() >= b->as_string());
1.58 paf 513: PUSH(value);
514: break;
515: }
516: case OP_STR_EQ:
517: {
1.61 paf 518: Value *b=POP(); Value *a=POP();
519: Value *value=NEW VBool(pool(), a->as_string() == b->as_string());
1.58 paf 520: PUSH(value);
521: break;
522: }
523: case OP_STR_NE:
524: {
1.61 paf 525: Value *b=POP(); Value *a=POP();
526: Value *value=NEW VBool(pool(), a->as_string() != b->as_string());
1.49 paf 527: PUSH(value);
1.28 paf 528: break;
529: }
530:
1.11 paf 531: default:
1.67 paf 532: THROW(0,0,
533: 0,
534: "unhandled '%s' opcode", opcode_name[op.code]);
1.11 paf 535: }
1.46 paf 536: fprintf(stderr, "\n");
1.11 paf 537: }
1.1 paf 538: }
1.17 paf 539:
540: Value *Request::get_element() {
1.32 paf 541: String& name=POP_NAME();
1.24 paf 542: Value *ncontext=POP();
1.32 paf 543: Value *value=ncontext->get_element(name);
1.21 paf 544:
1.32 paf 545: if(value) {
546: Junction *junction=value->get_junction();
1.36 paf 547: if(junction && junction->code) { // is it a code-junction?
1.32 paf 548: // autocalc it
1.46 paf 549: fprintf(stderr, "ja->\n");
1.45 paf 550: PUSH(self);
551: PUSH(root);
552: PUSH(rcontext);
553: PUSH(wcontext);
554:
1.34 paf 555: // almost plain wwrapper about junction wcontext,
556: // BUT intercepts string writes
557: VCodeFrame frame(pool(), *junction->wcontext); wcontext=&frame;
558: self=&junction->self;
1.32 paf 559: root=junction->root;
560: rcontext=junction->rcontext;
561: execute(*junction->code);
1.35 paf 562: // CodeFrame soul:
1.36 paf 563: // string writes were intercepted
564: // returning them as the result of getting code-junction
1.42 paf 565: value=NEW VString(*frame.get_string());
1.45 paf 566:
567: wcontext=static_cast<WContext *>(POP());
568: rcontext=POP();
569: root=POP();
570: self=static_cast<VAliased *>(POP());
1.62 paf 571:
1.46 paf 572: fprintf(stderr, "<-ja returned");
1.32 paf 573: }
1.63 paf 574: } else
1.23 paf 575: value=NEW VUnknown(pool());
1.63 paf 576:
577: value->set_name(name);
1.17 paf 578: return value;
1.34 paf 579: }
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