Annotation of parser3/src/main/execute.C, revision 1.53
1.1 paf 1: /*
1.53 ! paf 2: $Id: execute.C,v 1.52 2001/03/06 14:32:19 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"
1.1 paf 15:
16: #include <stdio.h>
17:
1.24 paf 18: #define PUSH(value) stack.push(value)
19: #define POP() static_cast<Value *>(stack.pop())
1.32 paf 20: #define POP_NAME() static_cast<Value *>(stack.pop())->as_string()
1.24 paf 21:
1.11 paf 22:
1.1 paf 23: char *opcode_name[]={
1.49 paf 24: // literals
1.52 paf 25: "VALUE", "CODE", "CLASS",
1.49 paf 26:
27: // actions
1.51 paf 28: "WITH_SELF", "WITH_ROOT", "WITH_READ", "WITH_WRITE",
1.1 paf 29: "CONSTRUCT",
1.18 paf 30: "WRITE",
31: "GET_ELEMENT", "GET_ELEMENT__WRITE",
1.1 paf 32: "CREATE_EWPOOL", "REDUCE_EWPOOL",
33: "CREATE_RWPOOL", "REDUCE_RWPOOL",
1.49 paf 34: "CREATE_SWPOOL", "REDUCE_SWPOOL",
1.1 paf 35: "GET_METHOD_FRAME",
36: "STORE_PARAM",
1.51 paf 37: "CALL",
1.49 paf 38:
39: // expression ops: unary
40: "NEG", "INV", "NOT", "DEF", "IN", "FEXISTS",
41: // expression ops: binary
42: "SUB", "ADD", "MUL", "DIV", "MOD",
43: "BIN_AND", "BIN_OR",
44: "LOG_AND", "LOG_OR",
45: "NUM_LT", "NUM_GT", "NUM_LE", "NUM_GE", "NUM_EQ", "NUM_NE",
46: "STR_LT", "STR_GT", "STR_LE", "STR_GE", "STR_EQ", "STR_NE",
47: "XOR"
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:
1.51 paf 299: // EXPRESSION
1.53 ! paf 300: case OP_ADD:
! 301: {
! 302: Value *b=POP();
! 303: Value *a=POP();
! 304: Value *value=NEW VDouble(pool(),
! 305: a->get_double() +
! 306: b->get_double());
! 307: PUSH(value);
! 308: break;
! 309: }
! 310: case OP_SUB:
! 311: {
! 312: Value *b=POP();
! 313: Value *a=POP();
! 314: Value *value=NEW VDouble(pool(),
! 315: a->get_double() -
! 316: b->get_double());
! 317: PUSH(value);
! 318: break;
! 319: }
1.49 paf 320: case OP_MUL:
321: {
322: Value *b=POP();
323: Value *a=POP();
324: Value *value=NEW VDouble(pool(),
325: a->get_double() *
1.53 ! paf 326: b->get_double());
! 327: PUSH(value);
! 328: break;
! 329: }
! 330: case OP_DIV:
! 331: {
! 332: Value *b=POP();
! 333: Value *a=POP();
! 334: Value *value=NEW VDouble(pool(),
! 335: a->get_double() /
1.49 paf 336: b->get_double());
337: PUSH(value);
1.28 paf 338: break;
339: }
340:
1.11 paf 341: default:
1.46 paf 342: fprintf(stderr, "\tTODO");
1.11 paf 343: break;
344: }
1.46 paf 345: fprintf(stderr, "\n");
1.11 paf 346: }
1.1 paf 347: }
1.17 paf 348:
349: Value *Request::get_element() {
1.32 paf 350: String& name=POP_NAME();
1.24 paf 351: Value *ncontext=POP();
1.32 paf 352: Value *value=ncontext->get_element(name);
1.21 paf 353:
1.32 paf 354: if(value) {
355: Junction *junction=value->get_junction();
1.36 paf 356: if(junction && junction->code) { // is it a code-junction?
1.32 paf 357: // autocalc it
1.46 paf 358: fprintf(stderr, "ja->\n");
1.45 paf 359: PUSH(self);
360: PUSH(root);
361: PUSH(rcontext);
362: PUSH(wcontext);
363:
1.34 paf 364: // almost plain wwrapper about junction wcontext,
365: // BUT intercepts string writes
366: VCodeFrame frame(pool(), *junction->wcontext); wcontext=&frame;
367: self=&junction->self;
1.32 paf 368: root=junction->root;
369: rcontext=junction->rcontext;
370: execute(*junction->code);
1.35 paf 371: // CodeFrame soul:
1.36 paf 372: // string writes were intercepted
373: // returning them as the result of getting code-junction
1.42 paf 374: value=NEW VString(*frame.get_string());
1.45 paf 375:
376: wcontext=static_cast<WContext *>(POP());
377: rcontext=POP();
378: root=POP();
379: self=static_cast<VAliased *>(POP());
1.46 paf 380: fprintf(stderr, "<-ja returned");
1.32 paf 381: }
382: } else {
1.23 paf 383: value=NEW VUnknown(pool());
1.25 paf 384: value->set_name(name);
1.22 paf 385: }
1.17 paf 386: return value;
1.34 paf 387: }
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