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1.117 paf 1: /** @file
1.118 paf 2: Parser: executor part of request class.
3:
1.217 paf 4: Copyright (c) 2001, 2002 ArtLebedev Group (http://www.artlebedev.com)
1.218 paf 5: Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)
1.118 paf 6:
1.232 ! paf 7: $Id: execute.C,v 1.231 2002/04/15 13:39:53 paf Exp $
1.1 paf 8: */
9:
1.152 paf 10: #include "pa_opcode.h"
1.8 paf 11: #include "pa_array.h"
1.11 paf 12: #include "pa_request.h"
1.15 paf 13: #include "pa_vstring.h"
1.22 paf 14: #include "pa_vhash.h"
1.167 parser 15: #include "pa_vvoid.h"
1.145 paf 16: #include "pa_vcode_frame.h"
17: #include "pa_vmethod_frame.h"
1.38 paf 18: #include "pa_vobject.h"
1.49 paf 19: #include "pa_vdouble.h"
1.54 paf 20: #include "pa_vbool.h"
1.94 paf 21: #include "pa_vtable.h"
1.132 paf 22: #include "pa_vfile.h"
1.144 paf 23: #include "pa_vimage.h"
1.194 parser 24: #include "pa_wwrapper.h"
1.1 paf 25:
1.232 ! paf 26: #define DEBUG_EXECUTE
1.221 paf 27: //#define DEBUG_STRING_APPENDS_VS_EXPANDS
1.220 paf 28:
29:
30: #ifdef DEBUG_STRING_APPENDS_VS_EXPANDS
31: ulong wcontext_result_size=0;
32: #endif
33:
34:
1.157 parser 35:
36: #ifdef DEBUG_EXECUTE
1.1 paf 37: char *opcode_name[]={
1.49 paf 38: // literals
1.109 paf 39: "VALUE", "CURLY_CODE__STORE_PARAM", "EXPR_CODE__STORE_PARAM",
1.209 paf 40: "NESTED_CODE",
1.49 paf 41:
42: // actions
1.187 parser 43: "WITH_ROOT", "WITH_SELF", "WITH_READ", "WITH_WRITE",
1.66 paf 44: "GET_CLASS",
1.182 parser 45: "CONSTRUCT_VALUE", "CONSTRUCT_EXPR", "CURLY_CODE__CONSTRUCT",
1.108 paf 46: "WRITE_VALUE", "WRITE_EXPR_RESULT", "STRING__WRITE",
1.215 paf 47: "GET_ELEMENT_OR_OPERATOR", "GET_ELEMENT", "GET_ELEMENT__WRITE",
1.232 ! paf 48: "OBJECT_POOL", "STRING_POOL",
1.1 paf 49: "GET_METHOD_FRAME",
50: "STORE_PARAM",
1.232 ! paf 51: "PREPARE_TO_CONSTRUCT_OBJECT", "PREPARE_TO_EXPRESSION",
! 52: "CALL", "CALL__WRITE",
1.49 paf 53:
54: // expression ops: unary
1.148 paf 55: "NEG", "INV", "NOT", "DEF", "IN", "FEXISTS", "DEXISTS",
1.49 paf 56: // expression ops: binary
1.201 paf 57: "SUB", "ADD", "MUL", "DIV", "MOD", "INTDIV",
1.56 paf 58: "BIN_AND", "BIN_OR", "BIN_XOR",
59: "LOG_AND", "LOG_OR", "LOG_XOR",
1.49 paf 60: "NUM_LT", "NUM_GT", "NUM_LE", "NUM_GE", "NUM_EQ", "NUM_NE",
1.103 paf 61: "STR_LT", "STR_GT", "STR_LE", "STR_GE", "STR_EQ", "STR_NE",
62: "IS"
1.1 paf 63: };
64:
1.158 parser 65: void va_debug_printf(Pool& pool, const char *fmt,va_list args) {
1.127 paf 66: char buf[MAX_STRING];
67: vsnprintf(buf, MAX_STRING, fmt, args);
68: SAPI::log(pool, "%s", buf);
1.107 paf 69: }
70:
1.158 parser 71: void debug_printf(Pool& pool, const char *fmt, ...) {
1.107 paf 72: va_list args;
73: va_start(args,fmt);
1.158 parser 74: va_debug_printf(pool,fmt,args);
1.107 paf 75: va_end(args);
1.105 paf 76: }
77:
1.158 parser 78: void debug_dump(Pool& pool, int level, const Array& ops) {
1.190 parser 79: Array_iter i(ops);
80: while(i.has_next()) {
1.23 paf 81: Operation op;
1.190 parser 82: op.cast=i.next();
1.1 paf 83:
1.86 paf 84: if(op.code==OP_VALUE || op.code==OP_STRING__WRITE) {
1.190 parser 85: Value *value=static_cast<Value *>(i.next());
1.158 parser 86: debug_printf(pool,
1.133 paf 87: "%*s%s"
88: " \"%s\" %s",
89: level*4, "", opcode_name[op.code],
90: value->get_string()->cstr(), value->type());
91: continue;
1.15 paf 92: }
1.158 parser 93: debug_printf(pool, "%*s%s", level*4, "", opcode_name[op.code]);
1.1 paf 94:
1.184 parser 95: switch(op.code) {
96: case OP_CURLY_CODE__STORE_PARAM:
97: case OP_EXPR_CODE__STORE_PARAM:
98: case OP_CURLY_CODE__CONSTRUCT:
1.209 paf 99: case OP_NESTED_CODE:
1.226 paf 100: case OP_OBJECT_POOL:
101: case OP_STRING_POOL:
1.190 parser 102: const Array *local_ops=reinterpret_cast<const Array *>(i.next());
1.158 parser 103: debug_dump(pool, level+1, *local_ops);
1.1 paf 104: }
105: }
106: }
1.157 parser 107: #endif
1.1 paf 108:
1.159 parser 109: #define PUSH(value) stack.push(value)
110: #define POP() static_cast<Value *>(stack.pop())
111: #define POP_NAME() static_cast<Value *>(stack.pop())->as_string()
1.209 paf 112: #define POP_CODE() static_cast<Array *>(stack.pop())
1.159 parser 113:
1.32 paf 114: void Request::execute(const Array& ops) {
1.197 parser 115: // _asm int 3;
1.157 parser 116: #ifdef DEBUG_EXECUTE
1.158 parser 117: debug_printf(pool(), "source----------------------------\n");
118: debug_dump(pool(), 0, ops);
119: debug_printf(pool(), "execution-------------------------\n");
1.157 parser 120: #endif
1.12 paf 121:
1.190 parser 122: Array_iter i(ops);
123: while(i.has_next()) {
1.23 paf 124: Operation op;
1.190 parser 125: op.cast=i.next();
1.157 parser 126: #ifdef DEBUG_EXECUTE
1.158 parser 127: debug_printf(pool(), "%d:%s", stack.top_index()+1, opcode_name[op.code]);
1.157 parser 128: #endif
1.11 paf 129:
1.197 parser 130: Value *value;
131: Value *a; Value *b;
1.209 paf 132: Array *b_code;
1.23 paf 133: switch(op.code) {
1.51 paf 134: // param in next instruction
1.52 paf 135: case OP_VALUE:
1.32 paf 136: {
1.197 parser 137: value=static_cast<Value *>(i.next());
1.157 parser 138: #ifdef DEBUG_EXECUTE
1.158 parser 139: debug_printf(pool(), " \"%s\" %s", value->get_string()->cstr(), value->type());
1.157 parser 140: #endif
1.52 paf 141: PUSH(value);
1.32 paf 142: break;
143: }
1.109 paf 144: case OP_CURLY_CODE__STORE_PARAM:
145: case OP_EXPR_CODE__STORE_PARAM:
1.32 paf 146: {
1.73 paf 147: VMethodFrame *frame=static_cast<VMethodFrame *>(stack.top_value());
1.65 paf 148: // code
1.190 parser 149: const Array *local_ops=reinterpret_cast<const Array *>(i.next());
1.157 parser 150: #ifdef DEBUG_EXECUTE
1.158 parser 151: debug_printf(pool(), " (%d)\n", local_ops->size());
152: debug_dump(pool(), 1, *local_ops);
1.157 parser 153: #endif
1.109 paf 154: // when they evaluate expression parameter,
155: // the object expression result
156: // does not need to be written into calling frame
157: // it must go into any expressions using that parameter
1.146 paf 158: // hence, we zero junction.wcontext here, and later
159: // in .process we would test that field
1.109 paf 160: // in decision "which wwrapper to use"
1.32 paf 161: Junction& j=*NEW Junction(pool(),
1.45 paf 162: *self, 0, 0,
1.130 paf 163: root,
1.149 paf 164: rcontext,
165: op.code==OP_EXPR_CODE__STORE_PARAM?0:wcontext,
1.130 paf 166: local_ops);
1.32 paf 167:
1.197 parser 168: value=NEW VJunction(j);
1.65 paf 169:
170: // store param
1.92 paf 171: frame->store_param(frame->name(), value);
1.32 paf 172: break;
173: }
1.66 paf 174: case OP_GET_CLASS:
1.38 paf 175: {
1.130 paf 176: // maybe they do ^class:method[] call, remember the fact
1.215 paf 177: wcontext->set_somebody_entered_some_class();
1.98 paf 178:
1.82 paf 179: const String& name=POP_NAME();
1.197 parser 180: value=static_cast<Value *>(classes().get(name));
1.120 paf 181: if(!value)
1.223 paf 182: throw Exception("parser.runtime",
1.66 paf 183: &name,
1.143 paf 184: "class is undefined");
1.66 paf 185:
1.120 paf 186: PUSH(value);
1.38 paf 187: break;
188: }
1.32 paf 189:
1.51 paf 190: // OP_WITH
1.187 parser 191: case OP_WITH_ROOT:
192: {
193: PUSH(root);
194: break;
195: }
1.37 paf 196: case OP_WITH_SELF:
197: {
198: PUSH(self);
199: break;
200: }
1.15 paf 201: case OP_WITH_READ:
202: {
1.24 paf 203: PUSH(rcontext);
1.20 paf 204: break;
205: }
1.37 paf 206: case OP_WITH_WRITE:
1.20 paf 207: {
1.37 paf 208: PUSH(wcontext);
1.20 paf 209: break;
210: }
1.37 paf 211:
1.51 paf 212: // OTHER ACTIONS BUT WITHs
1.80 paf 213: case OP_CONSTRUCT_VALUE:
1.20 paf 214: {
1.197 parser 215: value=POP();
1.82 paf 216: const String& name=POP_NAME();
1.37 paf 217: Value *ncontext=POP();
1.81 paf 218: ncontext->put_element(name, value);
1.37 paf 219: value->set_name(name);
1.213 paf 220: break;
221: }
1.80 paf 222: case OP_CONSTRUCT_EXPR:
223: {
1.219 paf 224: // see OP_PREPARE_TO_EXPRESSION
225: wcontext->set_in_expression(false);
226:
1.197 parser 227: value=POP();
1.82 paf 228: const String& name=POP_NAME();
1.80 paf 229: Value *ncontext=POP();
1.128 paf 230: ncontext->put_element(name, value->as_expr_result());
1.80 paf 231: value->set_name(name);
232: break;
233: }
1.182 parser 234: case OP_CURLY_CODE__CONSTRUCT:
235: {
1.190 parser 236: const Array *local_ops=reinterpret_cast<const Array *>(i.next());
1.182 parser 237: #ifdef DEBUG_EXECUTE
238: debug_printf(pool(), " (%d)\n", local_ops->size());
239: debug_dump(pool(), 1, *local_ops);
240: #endif
241: Junction& j=*NEW Junction(pool(),
242: *self, 0, 0,
243: root,
244: rcontext,
245: wcontext,
246: local_ops);
247:
1.197 parser 248: value=NEW VJunction(j);
1.182 parser 249: const String& name=POP_NAME();
250: Value *ncontext=POP();
251: ncontext->put_element(name, value);
252: value->set_name(name);
253: break;
254: }
1.209 paf 255: case OP_NESTED_CODE:
256: {
257: Array *local_ops=static_cast<Array *>(i.next());
258: #ifdef DEBUG_EXECUTE
259: debug_printf(pool(), " (%d)\n", local_ops->size());
260: debug_dump(pool(), 1, *local_ops);
261: #endif
262: PUSH(local_ops);
263: break;
264: }
1.108 paf 265: case OP_WRITE_VALUE:
1.13 paf 266: {
1.197 parser 267: value=POP();
1.92 paf 268: write_assign_lang(*value);
1.86 paf 269: break;
270: }
1.108 paf 271: case OP_WRITE_EXPR_RESULT:
272: {
1.230 paf 273: value=POP();
274: write_no_lang(*value->as_expr_result());
275:
276: // must be after write(result) and
1.219 paf 277: // see OP_PREPARE_TO_EXPRESSION
278: wcontext->set_in_expression(false);
1.108 paf 279: break;
280: }
1.86 paf 281: case OP_STRING__WRITE:
282: {
1.190 parser 283: VString *vstring=static_cast<VString *>(i.next());
1.157 parser 284: #ifdef DEBUG_EXECUTE
1.158 parser 285: debug_printf(pool(), " \"%s\"", vstring->string().cstr());
1.157 parser 286: #endif
1.122 paf 287: write_no_lang(vstring->string());
1.13 paf 288: break;
1.14 paf 289: }
1.13 paf 290:
1.215 paf 291: case OP_GET_ELEMENT_OR_OPERATOR:
292: {
293: // maybe they do ^object.method[] call, remember the fact
294: wcontext->set_somebody_entered_some_object(true);
295:
296: //_asm int 3;
297: value=get_element(true);
298: PUSH(value);
299: break;
300: }
1.15 paf 301: case OP_GET_ELEMENT:
1.11 paf 302: {
1.150 paf 303: // maybe they do ^object.method[] call, remember the fact
1.200 paf 304: wcontext->set_somebody_entered_some_object(true);
1.150 paf 305:
1.215 paf 306: //_asm int 3;
307: value=get_element(false);
1.24 paf 308: PUSH(value);
1.17 paf 309: break;
310: }
311:
1.18 paf 312: case OP_GET_ELEMENT__WRITE:
1.17 paf 313: {
1.215 paf 314: value=get_element(false);
1.92 paf 315: write_assign_lang(*value);
1.17 paf 316: break;
317: }
318:
1.32 paf 319:
1.226 paf 320: case OP_OBJECT_POOL:
1.17 paf 321: {
1.226 paf 322: const Array *local_ops=reinterpret_cast<const Array *>(i.next());
323:
1.24 paf 324: PUSH(wcontext);
1.137 paf 325: PUSH((void *)flang);
326: flang=String::UL_PASS_APPENDED;
1.226 paf 327: WWrapper local(pool(), 0 /*empty*/);
328: wcontext=&local;
329:
330: execute(*local_ops);
331:
1.228 paf 332: value=&wcontext->result().as_value();
1.137 paf 333: flang=static_cast<String::Untaint_lang>(reinterpret_cast<int>(POP()));
1.25 paf 334: wcontext=static_cast<WContext *>(POP());
1.24 paf 335: PUSH(value);
1.13 paf 336: break;
1.15 paf 337: }
1.13 paf 338:
1.226 paf 339: case OP_STRING_POOL:
1.49 paf 340: {
1.226 paf 341: const Array *local_ops=reinterpret_cast<const Array *>(i.next());
342:
1.49 paf 343: PUSH(wcontext);
1.226 paf 344: WWrapper local(pool(), 0 /*empty*/);
345: wcontext=&local;
346:
347: execute(*local_ops);
348:
1.49 paf 349: // from "$a $b" part of expression taking only string value,
350: // ignoring any other content of wcontext
1.82 paf 351: const String *string=wcontext->get_string();
1.80 paf 352: Value *value;
353: if(string)
354: value=NEW VString(*string);
355: else
1.167 parser 356: NEW VVoid(pool());
1.50 paf 357: wcontext=static_cast<WContext *>(POP());
1.49 paf 358: PUSH(value);
359: break;
360: }
361:
1.51 paf 362: // CALL
1.28 paf 363: case OP_GET_METHOD_FRAME:
364: {
1.197 parser 365: value=POP();
1.138 paf 366:
1.111 paf 367: // info:
368: // code compiled so that this one's always method-junction,
369: // not a code-junction
1.32 paf 370: Junction *junction=value->get_junction();
1.31 paf 371: if(!junction)
1.223 paf 372: throw Exception("parser.runtime",
1.42 paf 373: &value->name(),
1.111 paf 374: "(%s) not a method or junction, can not call it",
1.38 paf 375: value->type());
1.70 paf 376:
1.185 parser 377: VMethodFrame *frame=NEW VMethodFrame(pool(), value->name(), *junction);
1.28 paf 378: PUSH(frame);
379: break;
380: }
381: case OP_STORE_PARAM:
382: {
1.197 parser 383: value=POP();
1.73 paf 384: VMethodFrame *frame=static_cast<VMethodFrame *>(stack.top_value());
1.92 paf 385: frame->store_param(frame->name(), value);
1.29 paf 386: break;
387: }
388:
1.186 parser 389: case OP_PREPARE_TO_CONSTRUCT_OBJECT:
390: {
1.200 paf 391: wcontext->set_constructing(true);
1.186 parser 392: break;
393: }
1.219 paf 394:
395: case OP_PREPARE_TO_EXPRESSION:
396: {
397: wcontext->set_in_expression(true);
398: break;
399: }
400:
1.186 parser 401: case OP_CALL:
1.232 ! paf 402: case OP_CALL__WRITE:
1.29 paf 403: {
1.157 parser 404: #ifdef DEBUG_EXECUTE
1.158 parser 405: debug_printf(pool(), "->\n");
1.157 parser 406: #endif
1.34 paf 407: VMethodFrame *frame=static_cast<VMethodFrame *>(POP());
408: frame->fill_unspecified_params();
1.45 paf 409: PUSH(self);
410: PUSH(root);
411: PUSH(rcontext);
412: PUSH(wcontext);
413:
1.100 paf 414: VStateless_class *called_class=frame->junction.self.get_class();
1.200 paf 415: if(wcontext->get_constructing()) {
416: wcontext->set_constructing(false);
1.185 parser 417: if(frame->junction.method->call_type!=Method::CT_STATIC) {
1.138 paf 418: // this is a constructor call
1.185 parser 419:
420: if(Value *value=called_class->create_new_value(pool())) {
1.204 paf 421: // some stateless_class creatable derivates
1.149 paf 422: self=value;
1.204 paf 423: } else
1.223 paf 424: throw Exception("parser.runtime",
1.204 paf 425: &frame->name(),
426: "is not a constructor, system class '%s' can be constructed only implicitly",
427: called_class->name().cstr());
428:
1.83 paf 429: frame->write(*self,
1.136 paf 430: String::UL_CLEAN // not used, always an object, not string
1.83 paf 431: );
1.185 parser 432: } else
1.223 paf 433: throw Exception("parser.runtime",
1.185 parser 434: &frame->name(),
435: "method is static and can not be used as constructor");
436: } else {
437: // this is not constructor call
438:
439: // not ^name.method call, name:method call; and
440: // is context object or class & is it my class or my parent's class and?
441: VStateless_class *read_class=rcontext->get_class();
442: if(
1.200 paf 443: !(wcontext->get_somebody_entered_some_object() &&
444: !wcontext->get_somebody_entered_some_class()) &&
1.185 parser 445: read_class && read_class->is_or_derived_from(*called_class)) // yes
446: self=rcontext; // dynamic call
447: else // no, not me or relative of mine (=total stranger)
448: self=&frame->junction.self; // static call
449: }
1.75 paf 450:
1.45 paf 451: frame->set_self(*self);
1.219 paf 452:
453: // see OP_PREPARE_TO_EXPRESSION
454: frame->set_in_expression(wcontext->get_in_expression());
455:
1.202 paf 456: rcontext=wcontext=frame;
1.47 paf 457: {
1.48 paf 458: // take object or class from any wrappers
1.102 paf 459: // and substitute class alias to the class they are called AS
460: Temp_alias temp_alias(*self->get_aliased(), *frame->junction.vclass);
1.68 paf 461:
1.99 paf 462: const Method& method=*frame->junction.method;
1.134 paf 463: Method::Call_type call_type=
464: called_class==self ? Method::CT_STATIC : Method::CT_DYNAMIC;
465: if(
466: method.call_type==Method::CT_ANY ||
1.197 parser 467: method.call_type==call_type) { // allowed call type?
468: try {
469: if(method.native_code) { // native code?
1.202 paf 470: // root unchanged, so that ^for ^foreach & co may write to locals
1.197 parser 471: method.check_actual_numbered_params(
472: frame->junction.self,
473: frame->name(), frame->numbered_params());
474: method.native_code(
475: *this,
476: frame->name(), frame->numbered_params()); // execute it
477: } else { // parser code
1.202 paf 478: root=frame;
1.225 paf 479: // execute it
480: recoursion_checked_execute(&frame->name(), *method.parser_code);
1.159 parser 481: }
1.197 parser 482: } catch(...) {
483: // record it to stack trace
1.222 paf 484: exception_trace.push((void *)&frame->name());
1.197 parser 485: /*re*/throw;
1.159 parser 486: }
1.197 parser 487: } else
1.223 paf 488: throw Exception("parser.runtime",
1.134 paf 489: &frame->name(),
490: "is not allowed to be called %s",
491: call_type==Method::CT_STATIC?"statically":"dynamically");
492:
1.47 paf 493: }
1.232 ! paf 494: StringOrValue result=wcontext->result();
1.45 paf 495:
496: wcontext=static_cast<WContext *>(POP());
497: rcontext=POP();
498: root=POP();
499: self=static_cast<VAliased *>(POP());
1.220 paf 500:
501: #ifdef DEBUG_STRING_APPENDS_VS_EXPANDS
502: if(const String *s=value->get_string())
503: wcontext_result_size+=s->used_rows()*sizeof(String::Chunk::Row);
504: #endif
1.213 paf 505:
1.232 ! paf 506: if(op.code==OP_CALL__WRITE) {
! 507: write_assign_lang(result);
! 508: // forget the fact they've entered some ^object.method[].
! 509: // see OP_GET_ELEMENT
! 510: wcontext->set_somebody_entered_some_object(false);
! 511: } else { // OP_CALL
! 512: PUSH(&result.as_value());
! 513: }
! 514:
1.157 parser 515: #ifdef DEBUG_EXECUTE
1.158 parser 516: debug_printf(pool(), "<-returned");
1.157 parser 517: #endif
1.49 paf 518: break;
519: }
520:
1.55 paf 521: // expression ops: unary
522: case OP_NEG:
523: {
524: Value *operand=POP();
1.197 parser 525: value=NEW VDouble(pool(), -operand->as_double());
1.55 paf 526: PUSH(value);
527: break;
528: }
529: case OP_INV:
530: {
531: Value *operand=POP();
1.197 parser 532: value=NEW VDouble(pool(), ~operand->as_int());
1.55 paf 533: PUSH(value);
534: break;
535: }
536: case OP_NOT:
537: {
538: Value *operand=POP();
1.197 parser 539: value=NEW VBool(pool(), !operand->as_bool());
1.55 paf 540: PUSH(value);
541: break;
542: }
1.62 paf 543: case OP_DEF:
544: {
545: Value *operand=POP();
1.197 parser 546: value=NEW VBool(pool(), operand->is_defined());
1.62 paf 547: PUSH(value);
548: break;
549: }
550: case OP_IN:
551: {
1.199 paf 552: /// @test String::cmp
1.62 paf 553: Value *operand=POP();
1.110 paf 554: const char *path=operand->as_string().cstr();
1.197 parser 555: value=NEW VBool(pool(),
1.151 paf 556: info.uri && strncmp(path, info.uri, strlen(path))==0);
1.62 paf 557: PUSH(value);
558: break;
559: }
560: case OP_FEXISTS:
561: {
562: Value *operand=POP();
1.197 parser 563: value=NEW VBool(pool(),
1.127 paf 564: file_readable(absolute(operand->as_string())));
1.148 paf 565: PUSH(value);
566: break;
567: }
568: case OP_DEXISTS:
569: {
570: Value *operand=POP();
1.197 parser 571: value=NEW VBool(pool(),
1.148 paf 572: dir_readable(absolute(operand->as_string())));
1.62 paf 573: PUSH(value);
574: break;
575: }
1.55 paf 576:
577: // expression ops: binary
578: case OP_SUB:
1.53 paf 579: {
1.197 parser 580: b=POP(); a=POP();
581: value=NEW VDouble(pool(), a->as_double() - b->as_double());
1.53 paf 582: PUSH(value);
583: break;
584: }
1.55 paf 585: case OP_ADD:
1.53 paf 586: {
1.197 parser 587: b=POP(); a=POP();
588: value=NEW VDouble(pool(), a->as_double() + b->as_double());
1.53 paf 589: PUSH(value);
590: break;
591: }
1.49 paf 592: case OP_MUL:
593: {
1.197 parser 594: b=POP(); a=POP();
595: value=NEW VDouble(pool(), a->as_double() * b->as_double());
1.53 paf 596: PUSH(value);
597: break;
598: }
599: case OP_DIV:
600: {
1.197 parser 601: b=POP(); a=POP();
1.170 parser 602:
603: double a_double=a->as_double();
604: double b_double=b->as_double();
605:
1.171 parser 606: if(b_double == 0) {
607: const String *problem_source=&b->as_string();
608: #ifndef NO_STRING_ORIGIN
609: if(!problem_source->origin().file)
1.172 parser 610: problem_source=&b->name();
1.171 parser 611: #endif
1.223 paf 612: throw Exception("number.zerodivision",
1.171 parser 613: problem_source,
1.170 parser 614: "Division by zero");
1.171 parser 615: }
1.170 parser 616:
1.197 parser 617: value=NEW VDouble(pool(), a_double / b_double);
1.54 paf 618: PUSH(value);
619: break;
620: }
1.55 paf 621: case OP_MOD:
622: {
1.197 parser 623: b=POP(); a=POP();
1.170 parser 624:
1.173 parser 625: double a_double=a->as_double();
626: double b_double=b->as_double();
1.170 parser 627:
1.173 parser 628: if(b_double == 0) {
1.171 parser 629: const String *problem_source=&b->as_string();
630: #ifndef NO_STRING_ORIGIN
631: if(!problem_source->origin().file)
1.172 parser 632: problem_source=&b->name();
1.171 parser 633: #endif
1.223 paf 634: throw Exception("number.zerodivision",
1.171 parser 635: problem_source,
1.170 parser 636: "Modulus by zero");
1.171 parser 637: }
1.170 parser 638:
1.197 parser 639: value=NEW VDouble(pool(), fmod(a_double, b_double));
1.201 paf 640: PUSH(value);
641: break;
642: }
643: case OP_INTDIV:
644: {
645: b=POP(); a=POP();
646:
647: int a_int=a->as_int();
648: int b_int=b->as_int();
649:
650: if(b_int == 0) {
651: const String *problem_source=&b->as_string();
652: #ifndef NO_STRING_ORIGIN
653: if(!problem_source->origin().file)
654: problem_source=&b->name();
655: #endif
1.223 paf 656: throw Exception("number.zerodivision",
1.201 paf 657: problem_source,
658: "Division by zero");
659: }
660:
661: value=NEW VInt(pool(), a_int / b_int);
1.55 paf 662: PUSH(value);
663: break;
664: }
665: case OP_BIN_AND:
1.54 paf 666: {
1.197 parser 667: b=POP(); a=POP();
668: value=NEW VDouble(pool(),
1.155 parser 669: a->as_int() &
670: b->as_int());
1.54 paf 671: PUSH(value);
672: break;
673: }
1.55 paf 674: case OP_BIN_OR:
1.54 paf 675: {
1.197 parser 676: b=POP(); a=POP();
677: value=NEW VDouble(pool(),
1.155 parser 678: a->as_int() |
679: b->as_int());
1.55 paf 680: PUSH(value);
681: break;
682: }
1.56 paf 683: case OP_BIN_XOR:
684: {
1.197 parser 685: b=POP(); a=POP();
686: value=NEW VDouble(pool(),
1.155 parser 687: a->as_int() ^
688: b->as_int());
1.56 paf 689: PUSH(value);
690: break;
691: }
1.55 paf 692: case OP_LOG_AND:
693: {
1.209 paf 694: b_code=POP_CODE(); a=POP();
695: bool result;
696: if(a->as_bool()) {
697: execute(*b_code);
698: b=POP();
699: result=b->as_bool();
700: } else
701: result=false;
702: value=NEW VBool(pool(), result);
1.55 paf 703: PUSH(value);
704: break;
705: }
706: case OP_LOG_OR:
707: {
1.209 paf 708: b_code=POP_CODE(); a=POP();
709: bool result;
710: if(a->as_bool())
711: result=true;
712: else {
713: execute(*b_code);
714: b=POP();
715: result=b->as_bool();
716: }
717: value=NEW VBool(pool(), result);
1.56 paf 718: PUSH(value);
719: break;
720: }
721: case OP_LOG_XOR:
722: {
1.197 parser 723: b=POP(); a=POP();
724: value=NEW VBool(pool(), a->as_bool() ^ b->as_bool());
1.55 paf 725: PUSH(value);
726: break;
727: }
728: case OP_NUM_LT:
729: {
1.197 parser 730: b=POP(); a=POP();
731: value=NEW VBool(pool(), a->as_double() < b->as_double());
1.55 paf 732: PUSH(value);
733: break;
734: }
735: case OP_NUM_GT:
736: {
1.197 parser 737: b=POP(); a=POP();
738: value=NEW VBool(pool(), a->as_double() > b->as_double());
1.55 paf 739: PUSH(value);
740: break;
741: }
742: case OP_NUM_LE:
743: {
1.197 parser 744: b=POP(); a=POP();
745: value=NEW VBool(pool(), a->as_double() <= b->as_double());
1.55 paf 746: PUSH(value);
747: break;
748: }
749: case OP_NUM_GE:
750: {
1.197 parser 751: b=POP(); a=POP();
752: value=NEW VBool(pool(), a->as_double() >= b->as_double());
1.55 paf 753: PUSH(value);
754: break;
755: }
756: case OP_NUM_EQ:
757: {
1.197 parser 758: b=POP(); a=POP();
759: value=NEW VBool(pool(), a->as_double() == b->as_double());
1.55 paf 760: PUSH(value);
761: break;
762: }
763: case OP_NUM_NE:
764: {
1.197 parser 765: b=POP(); a=POP();
766: value=NEW VBool(pool(), a->as_double() != b->as_double());
1.54 paf 767: PUSH(value);
768: break;
769: }
1.58 paf 770: case OP_STR_LT:
771: {
1.197 parser 772: b=POP(); a=POP();
773: value=NEW VBool(pool(), a->as_string() < b->as_string());
1.58 paf 774: PUSH(value);
775: break;
776: }
777: case OP_STR_GT:
778: {
1.197 parser 779: b=POP(); a=POP();
780: value=NEW VBool(pool(), a->as_string() > b->as_string());
1.58 paf 781: PUSH(value);
782: break;
783: }
1.55 paf 784: case OP_STR_LE:
1.58 paf 785: {
1.197 parser 786: b=POP(); a=POP();
787: value=NEW VBool(pool(), a->as_string() <= b->as_string());
1.58 paf 788: PUSH(value);
789: break;
790: }
1.55 paf 791: case OP_STR_GE:
1.54 paf 792: {
1.197 parser 793: b=POP(); a=POP();
794: value=NEW VBool(pool(), a->as_string() >= b->as_string());
1.58 paf 795: PUSH(value);
796: break;
797: }
798: case OP_STR_EQ:
799: {
1.197 parser 800: b=POP(); a=POP();
801: value=NEW VBool(pool(), a->as_string() == b->as_string());
1.58 paf 802: PUSH(value);
803: break;
804: }
805: case OP_STR_NE:
806: {
1.197 parser 807: b=POP(); a=POP();
808: value=NEW VBool(pool(), a->as_string() != b->as_string());
1.103 paf 809: PUSH(value);
810: break;
811: }
812: case OP_IS:
813: {
1.191 parser 814: //_asm int 3;
1.197 parser 815: b=POP(); a=POP();
816: value=NEW VBool(pool(), b->as_string() == a->type());
1.49 paf 817: PUSH(value);
1.28 paf 818: break;
819: }
820:
1.11 paf 821: default:
1.223 paf 822: throw Exception(0,
1.67 paf 823: 0,
1.139 paf 824: "invalid opcode %d", op.code);
1.11 paf 825: }
826: }
1.1 paf 827: }
1.17 paf 828:
1.231 paf 829: /// @test cache|prepare junctions
1.215 paf 830: Value *Request::get_element(bool can_call_operator) {
1.82 paf 831: const String& name=POP_NAME();
1.24 paf 832: Value *ncontext=POP();
1.216 paf 833: Value *value=0;
834: if(can_call_operator)
835: if(Method* method=OP.get_method(name)) { // looking operator of that name FIRST
1.181 parser 836: // as if that method were in self and we have normal dynamic method here
837: Junction& junction=*NEW Junction(pool(),
1.202 paf 838: *root, self->get_class(), method, 0,0,0,0);
1.181 parser 839: value=NEW VJunction(junction);
840: }
1.216 paf 841: if(!value)
842: value=ncontext->get_element(name);
1.229 paf 843: if(value) {
844: value=&process_to_value(*value); // process possible code-junction
845: value->update_name(name);
846: } else {
1.167 parser 847: value=NEW VVoid(pool());
1.76 paf 848: value->set_name(name);
849: }
1.63 paf 850:
1.17 paf 851: return value;
1.34 paf 852: }
1.70 paf 853:
1.162 parser 854: /** @param intercept_string
1.116 paf 855: - true:
856: they want result=string value,
857: possible object result goes to wcontext
858: - false:
859: they want any result[string|object]
860: nothing goes to wcontext.
1.125 paf 861: used in @c (expression) params evaluation
1.224 paf 862:
863: using the fact it's either string_ or value_ result requested to speed up checkes
1.116 paf 864: */
1.229 paf 865: StringOrValue Request::process(Value& input_value, bool intercept_string) {
1.228 paf 866: StringOrValue result;
1.224 paf 867: Junction *junction=input_value.get_junction();
1.70 paf 868: if(junction && junction->code) { // is it a code-junction?
1.92 paf 869: // process it
1.157 parser 870: #ifdef DEBUG_EXECUTE
1.158 parser 871: debug_printf(pool(), "ja->\n");
1.157 parser 872: #endif
1.70 paf 873: PUSH(self);
874: PUSH(root);
875: PUSH(rcontext);
1.129 paf 876: PUSH(wcontext);
1.70 paf 877:
1.225 paf 878: self=&junction->self;
879: root=junction->root;
880: rcontext=junction->rcontext;
881:
1.109 paf 882: // for expression method params
883: // wcontext is set 0
884: // using the fact in decision "which wwrapper to use"
885: bool using_code_frame=intercept_string && junction->wcontext;
886: if(using_code_frame) {
1.71 paf 887: // almost plain wwrapper about junction wcontext,
888: // BUT intercepts string writes
1.225 paf 889: VCodeFrame local(pool(), *junction->wcontext);
890: wcontext=&local;
1.207 paf 891:
1.225 paf 892: // execute it
1.228 paf 893: recoursion_checked_execute(0/*result_name*/, *junction->code);
1.226 paf 894:
1.71 paf 895: // CodeFrame soul:
896: // string writes were intercepted
897: // returning them as the result of getting code-junction
1.229 paf 898: result.set_string(*wcontext->get_string());
1.224 paf 899: } else {
1.225 paf 900: // plain wwrapper
901: WWrapper local(pool(), 0/*empty*/);
902: wcontext=&local;
903:
904: // execute it
1.228 paf 905: recoursion_checked_execute(0/*result_name*/, *junction->code);
1.226 paf 906:
1.228 paf 907: result=wcontext->result();
1.224 paf 908: }
1.70 paf 909:
910: wcontext=static_cast<WContext *>(POP());
911: rcontext=POP();
912: root=POP();
913: self=static_cast<VAliased *>(POP());
914:
1.157 parser 915: #ifdef DEBUG_EXECUTE
1.158 parser 916: debug_printf(pool(), "<-ja returned");
1.157 parser 917: #endif
1.224 paf 918: } else {
1.228 paf 919: result.set_value(input_value);
1.224 paf 920: }
1.228 paf 921: return result;
1.85 paf 922: }
923:
1.208 paf 924: const String *Request::execute_method(Value& aself, const Method& method,
925: bool return_cstr) {
1.99 paf 926: PUSH(self);
927: PUSH(root);
928: PUSH(rcontext);
929: PUSH(wcontext);
930:
931: // initialize contexts
932: root=rcontext=self=&aself;
1.226 paf 933: WWrapper local(pool(), &aself);
934: wcontext=&local;
1.99 paf 935:
936: // execute!
937: execute(*method.parser_code);
938:
939: // result
1.208 paf 940: const String *result=return_cstr ? &wcontext->as_string() : 0;
941:
942: wcontext=static_cast<WContext *>(POP());
943: rcontext=POP();
944: root=POP();
945: self=static_cast<VAliased *>(POP());
946:
947: // return
948: return result;
949: }
950:
951: const String& Request::execute_method(VMethodFrame& amethodFrame, const Method& method) {
952: PUSH(self);
953: PUSH(root);
954: PUSH(rcontext);
955: PUSH(wcontext);
956:
957: // initialize contexts
958: root=rcontext=self=&amethodFrame;
959: wcontext=&amethodFrame;
960:
961: // execute!
962: execute(*method.parser_code);
963:
964: // result
965: const String& result=wcontext->as_string();
1.99 paf 966:
967: wcontext=static_cast<WContext *>(POP());
968: rcontext=POP();
969: root=POP();
970: self=static_cast<VAliased *>(POP());
971:
972: // return
973: return result;
974: }
975:
1.176 parser 976: const String *Request::execute_virtual_method(Value& aself,
1.208 paf 977: const String& method_name) {
1.99 paf 978: if(Value *value=aself.get_element(method_name))
979: if(Junction *junction=value->get_junction())
980: if(const Method *method=junction->method)
1.208 paf 981: return execute_method(aself, *method, true /*return_cstr*/);
1.188 parser 982:
1.176 parser 983: return 0;
984: }
985:
1.178 parser 986: const String *Request::execute_nonvirtual_method(VStateless_class& aclass,
1.208 paf 987: const String& method_name,
1.176 parser 988: bool return_cstr) {
1.178 parser 989: if(const Method *method=aclass.get_method(method_name))
1.179 parser 990: return execute_method(aclass, *method, return_cstr);
1.99 paf 991:
1.85 paf 992: return 0;
1.70 paf 993: }