![[BACK]](/cvsweb/icons/back.gif){kind=icon}
Return to execute.C CVS log ![[TXT]](/cvsweb/icons/text.gif){kind=icon}
![[DIR]](/cvsweb/icons/dir.gif){kind=icon}
Up to [parser3project] / parser3 / src / main|
Return to execute.C CVS log | Up to [parser3project] / parser3 / src / main |
1.117 paf 1: /** @file
1.118 paf 2: Parser: executor part of request class.
3:
1.88 paf 4: Copyright (c) 2001 ArtLebedev Group (http://www.artlebedev.com)
1.118 paf 5:
1.89 paf 6: Author: Alexander Petrosyan <paf@design.ru> (http://design.ru/paf)
1.88 paf 7:
1.136 ! paf 8: $Id: execute.C,v 1.135 2001/04/02 09:29:19 paf Exp $
1.1 paf 9: */
10:
1.123 paf 11: #include "pa_config_includes.h"
1.117 paf 12: #include "code.h"
1.8 paf 13: #include "pa_array.h"
1.11 paf 14: #include "pa_request.h"
1.15 paf 15: #include "pa_vstring.h"
1.22 paf 16: #include "pa_vhash.h"
1.23 paf 17: #include "pa_vunknown.h"
1.34 paf 18: #include "pa_vcframe.h"
19: #include "pa_vmframe.h"
1.38 paf 20: #include "pa_vobject.h"
1.49 paf 21: #include "pa_vdouble.h"
1.54 paf 22: #include "pa_vbool.h"
1.94 paf 23: #include "pa_vtable.h"
1.132 paf 24: #include "pa_vfile.h"
1.1 paf 25:
26: #include <stdio.h>
27:
1.24 paf 28: #define PUSH(value) stack.push(value)
29: #define POP() static_cast<Value *>(stack.pop())
1.32 paf 30: #define POP_NAME() static_cast<Value *>(stack.pop())->as_string()
1.24 paf 31:
1.11 paf 32:
1.1 paf 33: char *opcode_name[]={
1.49 paf 34: // literals
1.109 paf 35: "VALUE", "CURLY_CODE__STORE_PARAM", "EXPR_CODE__STORE_PARAM",
1.49 paf 36:
37: // actions
1.51 paf 38: "WITH_SELF", "WITH_ROOT", "WITH_READ", "WITH_WRITE",
1.66 paf 39: "GET_CLASS",
1.80 paf 40: "CONSTRUCT_VALUE", "CONSTRUCT_DOUBLE",
1.108 paf 41: "WRITE_VALUE", "WRITE_EXPR_RESULT", "STRING__WRITE",
1.18 paf 42: "GET_ELEMENT", "GET_ELEMENT__WRITE",
1.1 paf 43: "CREATE_EWPOOL", "REDUCE_EWPOOL",
44: "CREATE_RWPOOL", "REDUCE_RWPOOL",
1.49 paf 45: "CREATE_SWPOOL", "REDUCE_SWPOOL",
1.1 paf 46: "GET_METHOD_FRAME",
47: "STORE_PARAM",
1.51 paf 48: "CALL",
1.49 paf 49:
50: // expression ops: unary
51: "NEG", "INV", "NOT", "DEF", "IN", "FEXISTS",
52: // expression ops: binary
53: "SUB", "ADD", "MUL", "DIV", "MOD",
1.56 paf 54: "BIN_AND", "BIN_OR", "BIN_XOR",
55: "LOG_AND", "LOG_OR", "LOG_XOR",
1.49 paf 56: "NUM_LT", "NUM_GT", "NUM_LE", "NUM_GE", "NUM_EQ", "NUM_NE",
1.103 paf 57: "STR_LT", "STR_GT", "STR_LE", "STR_GE", "STR_EQ", "STR_NE",
58: "IS"
1.1 paf 59: };
60:
1.127 paf 61: void va_log_printf(Pool& pool, const char *fmt,va_list args) {
1.130 paf 62: return;
1.127 paf 63: char buf[MAX_STRING];
64: vsnprintf(buf, MAX_STRING, fmt, args);
65: SAPI::log(pool, "%s", buf);
1.107 paf 66: }
67:
1.127 paf 68: void log_printf(Pool& pool, const char *fmt, ...) {
1.107 paf 69: va_list args;
70: va_start(args,fmt);
1.127 paf 71: va_log_printf(pool,fmt,args);
1.107 paf 72: va_end(args);
1.105 paf 73: }
74:
1.127 paf 75: void dump(Pool& pool, int level, const Array& ops) {
1.23 paf 76: if(0){
1.135 paf 77: int size=ops.quick_size();
1.127 paf 78: //log_printf(pool, "size=%d\n", size);
1.23 paf 79: for(int i=0; i<size; i++) {
80: Operation op;
81: op.cast=ops.quick_get(i);
1.127 paf 82: log_printf(pool, "%8X\n", op.cast);
1.23 paf 83: }
84: }
85:
1.135 paf 86: int size=ops.quick_size();
1.127 paf 87: //log_printf(pool, "size=%d\n", size);
1.1 paf 88: for(int i=0; i<size; i++) {
1.23 paf 89: Operation op;
90: op.cast=ops.quick_get(i);
1.1 paf 91:
1.86 paf 92: if(op.code==OP_VALUE || op.code==OP_STRING__WRITE) {
1.52 paf 93: Value *value=static_cast<Value *>(ops.quick_get(++i));
1.133 paf 94: log_printf(pool,
95: "%*s%s"
96: " \"%s\" %s",
97: level*4, "", opcode_name[op.code],
98: value->get_string()->cstr(), value->type());
99: continue;
1.15 paf 100: }
1.133 paf 101: log_printf(pool, "%*s%s", level*4, "", opcode_name[op.code]);
1.1 paf 102:
1.109 paf 103: if(op.code==OP_CURLY_CODE__STORE_PARAM || op.code==OP_EXPR_CODE__STORE_PARAM) {
1.10 paf 104: const Array *local_ops=reinterpret_cast<const Array *>(ops.quick_get(++i));
1.127 paf 105: dump(pool, level+1, *local_ops);
1.1 paf 106: }
107: }
108: }
109:
1.32 paf 110: void Request::execute(const Array& ops) {
1.30 paf 111: if(1) {
1.127 paf 112: log_printf(pool(), "source----------------------------\n");
113: dump(pool(), 0, ops);
114: log_printf(pool(), "execution-------------------------\n");
1.12 paf 115: }
116:
1.135 paf 117: int size=ops.quick_size();
1.127 paf 118: //log_printf(pool(), "size=%d\n", size);
1.11 paf 119: for(int i=0; i<size; i++) {
1.23 paf 120: Operation op;
121: op.cast=ops.quick_get(i);
1.127 paf 122: log_printf(pool(), "%d:%s", stack.top_index()+1, opcode_name[op.code]);
1.11 paf 123:
1.23 paf 124: switch(op.code) {
1.51 paf 125: // param in next instruction
1.52 paf 126: case OP_VALUE:
1.32 paf 127: {
1.52 paf 128: Value *value=static_cast<Value *>(ops.quick_get(++i));
1.127 paf 129: log_printf(pool(), " \"%s\" %s", value->get_string()->cstr(), value->type());
1.52 paf 130: PUSH(value);
1.32 paf 131: break;
132: }
1.109 paf 133: case OP_CURLY_CODE__STORE_PARAM:
134: case OP_EXPR_CODE__STORE_PARAM:
1.32 paf 135: {
1.73 paf 136: VMethodFrame *frame=static_cast<VMethodFrame *>(stack.top_value());
1.65 paf 137: // code
1.32 paf 138: const Array *local_ops=reinterpret_cast<const Array *>(ops.quick_get(++i));
1.127 paf 139: log_printf(pool(), " (%d)\n", local_ops->size());
140: dump(pool(), 1, *local_ops);
1.63 paf 141:
1.130 paf 142: // when called method of some object, specifying object literally,
143: // e.g ^t.menu, code of curly params must be executed
144: // in r/w context of that object.
145: // otherwise in current r/w context.
146: //
1.109 paf 147: // when they evaluate expression parameter,
148: // the object expression result
149: // does not need to be written into calling frame
150: // it must go into any expressions using that parameter
151: // hence, zeroing junction.wcontext being created
1.129 paf 152: // later, in .process we would test that field
1.109 paf 153: // in decision "which wwrapper to use"
1.32 paf 154: Junction& j=*NEW Junction(pool(),
1.45 paf 155: *self, 0, 0,
1.130 paf 156: root,
157: wcontext->somebody_entered_some_object()>1?
158: &frame->junction.self /* ^t.menu{} */:rcontext/* ^if() */,
159: op.code==OP_EXPR_CODE__STORE_PARAM?
160: 0:wcontext->somebody_entered_some_object()>1?
1.131 paf 161: frame/* ^t.menu{} */:wcontext/* ^if() */,
1.130 paf 162: local_ops);
1.32 paf 163:
164: Value *value=NEW VJunction(j);
1.65 paf 165:
166: // store param
1.92 paf 167: frame->store_param(frame->name(), value);
1.32 paf 168: break;
169: }
1.66 paf 170: case OP_GET_CLASS:
1.38 paf 171: {
1.130 paf 172: // maybe they do ^class:method[] call, remember the fact
1.98 paf 173: wcontext->set_somebody_entered_some_class();
174:
1.82 paf 175: const String& name=POP_NAME();
1.120 paf 176: Value *value=static_cast<Value *>(classes().get(name));
177: if(!value)
1.66 paf 178: THROW(0,0,
179: &name,
180: ": undefined class");
181:
1.120 paf 182: PUSH(value);
1.38 paf 183: break;
184: }
1.32 paf 185:
1.51 paf 186: // OP_WITH
1.37 paf 187: case OP_WITH_SELF:
188: {
189: PUSH(self);
190: break;
191: }
192: case OP_WITH_ROOT:
1.11 paf 193: {
1.37 paf 194: PUSH(root);
1.13 paf 195: break;
1.11 paf 196: }
1.15 paf 197: case OP_WITH_READ:
198: {
1.24 paf 199: PUSH(rcontext);
1.20 paf 200: break;
201: }
1.37 paf 202: case OP_WITH_WRITE:
1.20 paf 203: {
1.37 paf 204: PUSH(wcontext);
1.20 paf 205: break;
206: }
1.37 paf 207:
1.51 paf 208: // OTHER ACTIONS BUT WITHs
1.80 paf 209: case OP_CONSTRUCT_VALUE:
1.20 paf 210: {
1.37 paf 211: Value *value=POP();
1.82 paf 212: const String& name=POP_NAME();
1.37 paf 213: Value *ncontext=POP();
1.81 paf 214: ncontext->put_element(name, value);
1.37 paf 215: value->set_name(name);
1.15 paf 216: break;
217: }
1.80 paf 218: case OP_CONSTRUCT_EXPR:
219: {
220: Value *value=POP();
1.82 paf 221: const String& name=POP_NAME();
1.80 paf 222: Value *ncontext=POP();
1.128 paf 223: ncontext->put_element(name, value->as_expr_result());
1.80 paf 224: value->set_name(name);
225: break;
226: }
1.108 paf 227: case OP_WRITE_VALUE:
1.13 paf 228: {
1.24 paf 229: Value *value=POP();
1.92 paf 230: write_assign_lang(*value);
1.86 paf 231: break;
232: }
1.108 paf 233: case OP_WRITE_EXPR_RESULT:
234: {
235: Value *value=POP();
1.128 paf 236: write_expr_result(*value->as_expr_result());
1.108 paf 237: break;
238: }
1.86 paf 239: case OP_STRING__WRITE:
240: {
241: VString *vstring=static_cast<VString *>(ops.quick_get(++i));
1.127 paf 242: log_printf(pool(), " \"%s\"", vstring->string().cstr());
1.122 paf 243: write_no_lang(vstring->string());
1.13 paf 244: break;
1.14 paf 245: }
1.13 paf 246:
1.15 paf 247: case OP_GET_ELEMENT:
1.11 paf 248: {
1.130 paf 249: // maybe they do ^object.method[] call, remember the fact
250: wcontext->inc_somebody_entered_some_object();
251:
1.17 paf 252: Value *value=get_element();
1.24 paf 253: PUSH(value);
1.17 paf 254: break;
255: }
256:
1.18 paf 257: case OP_GET_ELEMENT__WRITE:
1.17 paf 258: {
259: Value *value=get_element();
1.92 paf 260: write_assign_lang(*value);
1.17 paf 261: break;
262: }
263:
1.32 paf 264:
1.17 paf 265: case OP_CREATE_EWPOOL:
266: {
1.24 paf 267: PUSH(wcontext);
1.43 paf 268: wcontext=NEW WWrapper(pool(), 0 /* empty */, true /* constructing */);
1.17 paf 269: break;
270: }
271: case OP_REDUCE_EWPOOL:
272: {
1.36 paf 273: Value *value=wcontext->result();
1.25 paf 274: wcontext=static_cast<WContext *>(POP());
1.24 paf 275: PUSH(value);
1.13 paf 276: break;
1.15 paf 277: }
1.13 paf 278:
1.26 paf 279: case OP_CREATE_RWPOOL:
280: {
281: Value *ncontext=POP();
282: PUSH(rcontext);
283: rcontext=ncontext;
284: PUSH(wcontext);
1.43 paf 285: wcontext=NEW WWrapper(pool(), ncontext, false /* not constructing */);
1.26 paf 286: break;
287: }
288: case OP_REDUCE_RWPOOL:
289: {
1.82 paf 290: const String *string=wcontext->get_string();
1.80 paf 291: Value *value;
292: if(string)
293: value=NEW VString(*string);
294: else
295: value=NEW VUnknown(pool());
1.26 paf 296: wcontext=static_cast<WContext *>(POP());
297: rcontext=POP();
298: PUSH(value);
299: break;
300: }
1.49 paf 301: case OP_CREATE_SWPOOL:
302: {
303: PUSH(wcontext);
1.50 paf 304: wcontext=NEW WWrapper(pool(), 0 /* empty */, false /* not constructing */);
1.49 paf 305: break;
306: }
307: case OP_REDUCE_SWPOOL:
308: {
309: // from "$a $b" part of expression taking only string value,
310: // ignoring any other content of wcontext
1.82 paf 311: const String *string=wcontext->get_string();
1.80 paf 312: Value *value;
313: if(string)
314: value=NEW VString(*string);
315: else
316: NEW VUnknown(pool());
1.50 paf 317: wcontext=static_cast<WContext *>(POP());
1.49 paf 318: PUSH(value);
319: break;
320: }
321:
1.51 paf 322: // CALL
1.28 paf 323: case OP_GET_METHOD_FRAME:
324: {
1.32 paf 325: Value *value=POP();
1.111 paf 326: // info:
327: // code compiled so that this one's always method-junction,
328: // not a code-junction
1.32 paf 329: Junction *junction=value->get_junction();
1.31 paf 330: if(!junction)
1.28 paf 331: THROW(0,0,
1.42 paf 332: &value->name(),
1.111 paf 333: "(%s) not a method or junction, can not call it",
1.38 paf 334: value->type());
1.70 paf 335:
1.34 paf 336: VMethodFrame *frame=NEW VMethodFrame(pool(), *junction);
1.106 paf 337: frame->set_name(value->name());
1.28 paf 338: PUSH(frame);
339: break;
340: }
341: case OP_STORE_PARAM:
342: {
343: Value *value=POP();
1.73 paf 344: VMethodFrame *frame=static_cast<VMethodFrame *>(stack.top_value());
1.92 paf 345: frame->store_param(frame->name(), value);
1.29 paf 346: break;
347: }
348:
349: case OP_CALL:
350: {
1.127 paf 351: log_printf(pool(), "->\n");
1.34 paf 352: VMethodFrame *frame=static_cast<VMethodFrame *>(POP());
353: frame->fill_unspecified_params();
1.45 paf 354: PUSH(self);
355: PUSH(root);
356: PUSH(rcontext);
357: PUSH(wcontext);
358:
1.100 paf 359: VStateless_class *called_class=frame->junction.self.get_class();
1.74 paf 360: // is context object or class & is it my class or my parent's class?
1.100 paf 361: VStateless_class *read_class=rcontext->get_class();
1.74 paf 362: if(read_class && read_class->is_or_derived_from(*called_class)) // yes
363: self=rcontext; // class dynamic call
1.75 paf 364: else // no, not me or relative of mine (total stranger)
1.98 paf 365: if(
366: wcontext->constructing() && // constructing?
367: wcontext->somebody_entered_some_class()) { // ^class:method[..]?
368: // yes, this is a constructor call
1.114 paf 369: // some stateless_object derivates with constructors
1.126 paf 370: if(called_class==table_class)
1.94 paf 371: self=NEW VTable(pool());
1.132 paf 372: else if(called_class==file_class)
373: self=NEW VFile(pool());
1.121 paf 374: else // stateful object
1.94 paf 375: self=NEW VObject(pool(), *called_class);
1.83 paf 376: frame->write(*self,
1.136 ! paf 377: String::UL_CLEAN // not used, always an object, not string
1.83 paf 378: );
1.75 paf 379: } else
380: self=&frame->junction.self; // no, static or simple dynamic call
381:
1.45 paf 382: frame->set_self(*self);
1.29 paf 383: root=rcontext=wcontext=frame;
1.47 paf 384: {
1.48 paf 385: // take object or class from any wrappers
1.102 paf 386: // and substitute class alias to the class they are called AS
387: Temp_alias temp_alias(*self->get_aliased(), *frame->junction.vclass);
1.68 paf 388:
1.99 paf 389: const Method& method=*frame->junction.method;
1.134 paf 390: Method::Call_type call_type=
391: called_class==self ? Method::CT_STATIC : Method::CT_DYNAMIC;
392: if(
393: method.call_type==Method::CT_ANY ||
394: method.call_type==call_type) // allowed call type?
395: if(method.native_code) { // native code?
396: method.check_actual_numbered_params(
397: frame->junction.self,
398: frame->name(), frame->numbered_params());
399: (*method.native_code)(
400: *this,
401: frame->name(), frame->numbered_params()); // execute it
402: } else // parser code
403: execute(*method.parser_code); // execute it
404: else
405: THROW(0, 0,
406: &frame->name(),
407: "is not allowed to be called %s",
408: call_type==Method::CT_STATIC?"statically":"dynamically");
409:
1.47 paf 410: }
1.36 paf 411: Value *value=wcontext->result();
1.45 paf 412:
413: wcontext=static_cast<WContext *>(POP());
414: rcontext=POP();
415: root=POP();
416: self=static_cast<VAliased *>(POP());
1.62 paf 417:
1.61 paf 418: PUSH(value);
1.127 paf 419: log_printf(pool(), "<-returned");
1.49 paf 420: break;
421: }
422:
1.55 paf 423: // expression ops: unary
424: case OP_NEG:
425: {
426: Value *operand=POP();
1.128 paf 427: Value *value=NEW VDouble(pool(), -operand->as_double());
1.55 paf 428: PUSH(value);
429: break;
430: }
431: case OP_INV:
432: {
433: Value *operand=POP();
1.128 paf 434: Value *value=NEW VDouble(pool(), ~(int)operand->as_double());
1.55 paf 435: PUSH(value);
436: break;
437: }
438: case OP_NOT:
439: {
440: Value *operand=POP();
1.128 paf 441: Value *value=NEW VBool(pool(), !operand->as_bool());
1.55 paf 442: PUSH(value);
443: break;
444: }
1.62 paf 445: case OP_DEF:
446: {
447: Value *operand=POP();
1.128 paf 448: Value *value=NEW VBool(pool(), operand->is_defined());
1.62 paf 449: PUSH(value);
450: break;
451: }
452: case OP_IN:
453: {
454: Value *operand=POP();
1.110 paf 455: const char *path=operand->as_string().cstr();
1.127 paf 456: Value *value=NEW VBool(pool(), info.uri && strcmp(path, info.uri)<=0);
1.62 paf 457: PUSH(value);
458: break;
459: }
460: case OP_FEXISTS:
461: {
462: Value *operand=POP();
1.127 paf 463: Value *value=NEW VBool(pool(),
464: file_readable(absolute(operand->as_string())));
1.62 paf 465: PUSH(value);
466: break;
467: }
1.55 paf 468:
469: // expression ops: binary
470: case OP_SUB:
1.53 paf 471: {
1.61 paf 472: Value *b=POP(); Value *a=POP();
1.128 paf 473: Value *value=NEW VDouble(pool(), a->as_double() - b->as_double());
1.53 paf 474: PUSH(value);
475: break;
476: }
1.55 paf 477: case OP_ADD:
1.53 paf 478: {
1.61 paf 479: Value *b=POP(); Value *a=POP();
1.128 paf 480: Value *value=NEW VDouble(pool(), a->as_double() + b->as_double());
1.53 paf 481: PUSH(value);
482: break;
483: }
1.49 paf 484: case OP_MUL:
485: {
1.61 paf 486: Value *b=POP(); Value *a=POP();
1.128 paf 487: Value *value=NEW VDouble(pool(), a->as_double() * b->as_double());
1.53 paf 488: PUSH(value);
489: break;
490: }
491: case OP_DIV:
492: {
1.61 paf 493: Value *b=POP(); Value *a=POP();
1.128 paf 494: Value *value=NEW VDouble(pool(), a->as_double() / b->as_double());
1.54 paf 495: PUSH(value);
496: break;
497: }
1.55 paf 498: case OP_MOD:
499: {
1.61 paf 500: Value *b=POP(); Value *a=POP();
1.78 paf 501: Value *value=NEW VDouble(pool(),
1.128 paf 502: (int)a->as_double() %
503: (int)b->as_double());
1.55 paf 504: PUSH(value);
505: break;
506: }
507: case OP_BIN_AND:
1.54 paf 508: {
1.61 paf 509: Value *b=POP(); Value *a=POP();
1.78 paf 510: Value *value=NEW VDouble(pool(),
1.128 paf 511: (int)a->as_double() &
512: (int)b->as_double());
1.54 paf 513: PUSH(value);
514: break;
515: }
1.55 paf 516: case OP_BIN_OR:
1.54 paf 517: {
1.61 paf 518: Value *b=POP(); Value *a=POP();
1.78 paf 519: Value *value=NEW VDouble(pool(),
1.128 paf 520: (int)a->as_double() |
521: (int)b->as_double());
1.55 paf 522: PUSH(value);
523: break;
524: }
1.56 paf 525: case OP_BIN_XOR:
526: {
1.61 paf 527: Value *b=POP(); Value *a=POP();
1.78 paf 528: Value *value=NEW VDouble(pool(),
1.128 paf 529: (int)a->as_double() ^
530: (int)b->as_double());
1.56 paf 531: PUSH(value);
532: break;
533: }
1.55 paf 534: case OP_LOG_AND:
535: {
1.61 paf 536: Value *b=POP(); Value *a=POP();
1.128 paf 537: Value *value=NEW VBool(pool(), a->as_bool() && b->as_bool());
1.55 paf 538: PUSH(value);
539: break;
540: }
541: case OP_LOG_OR:
542: {
1.61 paf 543: Value *b=POP(); Value *a=POP();
1.128 paf 544: Value *value=NEW VBool(pool(), a->as_bool() || b->as_bool());
1.56 paf 545: PUSH(value);
546: break;
547: }
548: case OP_LOG_XOR:
549: {
1.61 paf 550: Value *b=POP(); Value *a=POP();
1.128 paf 551: Value *value=NEW VBool(pool(), a->as_bool() ^ b->as_bool());
1.55 paf 552: PUSH(value);
553: break;
554: }
555: case OP_NUM_LT:
556: {
1.61 paf 557: Value *b=POP(); Value *a=POP();
1.128 paf 558: Value *value=NEW VBool(pool(), a->as_double() < b->as_double());
1.55 paf 559: PUSH(value);
560: break;
561: }
562: case OP_NUM_GT:
563: {
1.61 paf 564: Value *b=POP(); Value *a=POP();
1.128 paf 565: Value *value=NEW VBool(pool(), a->as_double() > b->as_double());
1.55 paf 566: PUSH(value);
567: break;
568: }
569: case OP_NUM_LE:
570: {
1.61 paf 571: Value *b=POP(); Value *a=POP();
1.128 paf 572: Value *value=NEW VBool(pool(), a->as_double() <= b->as_double());
1.55 paf 573: PUSH(value);
574: break;
575: }
576: case OP_NUM_GE:
577: {
1.61 paf 578: Value *b=POP(); Value *a=POP();
1.128 paf 579: Value *value=NEW VBool(pool(), a->as_double() >= b->as_double());
1.55 paf 580: PUSH(value);
581: break;
582: }
583: case OP_NUM_EQ:
584: {
1.61 paf 585: Value *b=POP(); Value *a=POP();
1.128 paf 586: Value *value=NEW VBool(pool(), a->as_double() == b->as_double());
1.55 paf 587: PUSH(value);
588: break;
589: }
590: case OP_NUM_NE:
591: {
1.61 paf 592: Value *b=POP(); Value *a=POP();
1.128 paf 593: Value *value=NEW VBool(pool(), a->as_double() != b->as_double());
1.54 paf 594: PUSH(value);
595: break;
596: }
1.58 paf 597: case OP_STR_LT:
598: {
1.61 paf 599: Value *b=POP(); Value *a=POP();
1.78 paf 600: Value *value=NEW VBool(pool(), a->as_string() < b->as_string());
1.58 paf 601: PUSH(value);
602: break;
603: }
604: case OP_STR_GT:
605: {
1.61 paf 606: Value *b=POP(); Value *a=POP();
1.78 paf 607: Value *value=NEW VBool(pool(), a->as_string() > b->as_string());
1.58 paf 608: PUSH(value);
609: break;
610: }
1.55 paf 611: case OP_STR_LE:
1.58 paf 612: {
1.61 paf 613: Value *b=POP(); Value *a=POP();
1.78 paf 614: Value *value=NEW VBool(pool(), a->as_string() <= b->as_string());
1.58 paf 615: PUSH(value);
616: break;
617: }
1.55 paf 618: case OP_STR_GE:
1.54 paf 619: {
1.61 paf 620: Value *b=POP(); Value *a=POP();
1.78 paf 621: Value *value=NEW VBool(pool(), a->as_string() >= b->as_string());
1.58 paf 622: PUSH(value);
623: break;
624: }
625: case OP_STR_EQ:
626: {
1.61 paf 627: Value *b=POP(); Value *a=POP();
1.78 paf 628: Value *value=NEW VBool(pool(), a->as_string() == b->as_string());
1.58 paf 629: PUSH(value);
630: break;
631: }
632: case OP_STR_NE:
633: {
1.61 paf 634: Value *b=POP(); Value *a=POP();
1.78 paf 635: Value *value=NEW VBool(pool(), a->as_string() != b->as_string());
1.103 paf 636: PUSH(value);
637: break;
638: }
639: case OP_IS:
640: {
641: Value *b=POP(); Value *a=POP();
642: Value *value=NEW VBool(pool(), b->as_string() == a->type());
1.49 paf 643: PUSH(value);
1.28 paf 644: break;
645: }
646:
1.11 paf 647: default:
1.67 paf 648: THROW(0,0,
649: 0,
650: "unhandled '%s' opcode", opcode_name[op.code]);
1.11 paf 651: }
652: }
1.1 paf 653: }
1.17 paf 654:
655: Value *Request::get_element() {
1.82 paf 656: const String& name=POP_NAME();
1.24 paf 657: Value *ncontext=POP();
1.32 paf 658: Value *value=ncontext->get_element(name);
1.21 paf 659:
1.76 paf 660: if(value)
1.92 paf 661: value=&process(*value, &name); // process possible code-junction
1.76 paf 662: else {
663: value=NEW VUnknown(pool());
664: value->set_name(name);
665: }
1.63 paf 666:
1.17 paf 667: return value;
1.34 paf 668: }
1.70 paf 669:
1.116 paf 670: /**
671: intercept_string:
672: - true:
673: they want result=string value,
674: possible object result goes to wcontext
675: - false:
676: they want any result[string|object]
677: nothing goes to wcontext.
1.125 paf 678: used in @c (expression) params evaluation
1.116 paf 679: */
1.92 paf 680: Value& Request::process(Value& value, const String *name, bool intercept_string) {
1.91 paf 681: Value *result;
1.70 paf 682: Junction *junction=value.get_junction();
683: if(junction && junction->code) { // is it a code-junction?
1.92 paf 684: // process it
1.127 paf 685: log_printf(pool(), "ja->\n");
1.70 paf 686: PUSH(self);
687: PUSH(root);
688: PUSH(rcontext);
1.129 paf 689: PUSH(wcontext);
1.70 paf 690:
1.71 paf 691: WContext *frame;
1.109 paf 692: // for expression method params
693: // wcontext is set 0
694: // using the fact in decision "which wwrapper to use"
695: bool using_code_frame=intercept_string && junction->wcontext;
696: if(using_code_frame) {
1.71 paf 697: // almost plain wwrapper about junction wcontext,
698: // BUT intercepts string writes
699: frame=NEW VCodeFrame(pool(), *junction->wcontext);
700: } else {
701: // plain wwrapper
1.108 paf 702: frame=NEW WWrapper(pool(), 0/*empty*/, false/*not constructing*/);
1.71 paf 703: }
704:
705: wcontext=frame;
1.70 paf 706: self=&junction->self;
707: root=junction->root;
708: rcontext=junction->rcontext;
709: execute(*junction->code);
1.109 paf 710: if(using_code_frame) {
1.71 paf 711: // CodeFrame soul:
712: // string writes were intercepted
713: // returning them as the result of getting code-junction
714: result=NEW VString(*frame->get_string());
715: } else
716: result=frame->result();
1.70 paf 717:
718: wcontext=static_cast<WContext *>(POP());
719: rcontext=POP();
720: root=POP();
721: self=static_cast<VAliased *>(POP());
722:
1.127 paf 723: log_printf(pool(), "<-ja returned");
1.70 paf 724: } else
1.91 paf 725: result=&value;
726:
727: if(name)
728: result->set_name(*name);
729: return *result;
1.85 paf 730: }
731:
1.114 paf 732: const String *Request::execute_method(Value& aself, const Method& method, bool return_cstr) {
1.99 paf 733: PUSH(self);
734: PUSH(root);
735: PUSH(rcontext);
736: PUSH(wcontext);
737:
738: // initialize contexts
739: root=rcontext=self=&aself;
740: wcontext=NEW WWrapper(pool(), &aself, false /* not constructing */);
741:
742: // execute!
743: execute(*method.parser_code);
744:
745: // result
1.114 paf 746: const String *result;
1.99 paf 747: if(return_cstr)
1.114 paf 748: result=&wcontext->as_string();
1.99 paf 749: else
750: result=0; // ignore result
751:
752: wcontext=static_cast<WContext *>(POP());
753: rcontext=POP();
754: root=POP();
755: self=static_cast<VAliased *>(POP());
756:
757: // return
758: return result;
759: }
760:
1.114 paf 761: const String *Request::execute_method(Value& aself,
1.99 paf 762: const String& method_name, bool return_cstr) {
763: if(Value *value=aself.get_element(method_name))
764: if(Junction *junction=value->get_junction())
765: if(const Method *method=junction->method)
766: return execute_method(aself, *method, return_cstr);
767:
1.85 paf 768: return 0;
1.70 paf 769: }