Annotation of parser3/src/main/execute.C, revision 1.295.2.27.2.17
1.117 paf 1: /** @file
1.118 paf 2: Parser: executor part of request class.
3:
1.295.2.4 paf 4: Copyright (c) 2001-2003 ArtLebedev Group (http://www.artlebedev.com)
1.218 paf 5: Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)
1.243 paf 6: */
1.118 paf 7:
1.295.2.27.2. 7(paf 8:3): static const char* IDENT_EXECUTE_C="$Date: 2003/04/03 06:40:39 $";
1.1 paf 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:
1.295.2.27.2. 3(paf 26:3): //#define DEBUG_EXECUTE
1.157 parser 27:
28: #ifdef DEBUG_EXECUTE
1.1 paf 29: char *opcode_name[]={
1.49 paf 30: // literals
1.109 paf 31: "VALUE", "CURLY_CODE__STORE_PARAM", "EXPR_CODE__STORE_PARAM",
1.209 paf 32: "NESTED_CODE",
1.49 paf 33:
34: // actions
1.187 parser 35: "WITH_ROOT", "WITH_SELF", "WITH_READ", "WITH_WRITE",
1.66 paf 36: "GET_CLASS",
1.182 parser 37: "CONSTRUCT_VALUE", "CONSTRUCT_EXPR", "CURLY_CODE__CONSTRUCT",
1.108 paf 38: "WRITE_VALUE", "WRITE_EXPR_RESULT", "STRING__WRITE",
1.284 paf 39: "GET_ELEMENT_OR_OPERATOR", "GET_ELEMENT", "GET_ELEMENT__WRITE",
1.232 paf 40: "OBJECT_POOL", "STRING_POOL",
1.1 paf 41: "STORE_PARAM",
1.232 paf 42: "PREPARE_TO_CONSTRUCT_OBJECT", "PREPARE_TO_EXPRESSION",
43: "CALL", "CALL__WRITE",
1.49 paf 44:
45: // expression ops: unary
1.148 paf 46: "NEG", "INV", "NOT", "DEF", "IN", "FEXISTS", "DEXISTS",
1.49 paf 47: // expression ops: binary
1.201 paf 48: "SUB", "ADD", "MUL", "DIV", "MOD", "INTDIV",
1.275 paf 49: "BIN_SL", "BIN_SR",
1.56 paf 50: "BIN_AND", "BIN_OR", "BIN_XOR",
51: "LOG_AND", "LOG_OR", "LOG_XOR",
1.49 paf 52: "NUM_LT", "NUM_GT", "NUM_LE", "NUM_GE", "NUM_EQ", "NUM_NE",
1.103 paf 53: "STR_LT", "STR_GT", "STR_LE", "STR_GE", "STR_EQ", "STR_NE",
54: "IS"
1.1 paf 55: };
56:
1.295.2.11 paf 57: void va_debug_printf(SAPI_Info& sapi_info, const char* fmt,va_list args) {
1.127 paf 58: char buf[MAX_STRING];
59: vsnprintf(buf, MAX_STRING, fmt, args);
1.295.2.11 paf 60: SAPI::log(sapi_info, "%s", buf);
1.107 paf 61: }
62:
1.295.2.11 paf 63: void debug_printf(SAPI_Info& sapi_info, const char* fmt, ...) {
1.107 paf 64: va_list args;
1.295.2.11 paf 65: va_start(args, fmt);
66: va_debug_printf(sapi_info, fmt, args);
1.107 paf 67: va_end(args);
1.105 paf 68: }
69:
1.295.2.27.2. (paf 70:): void debug_dump(SAPI_Info& sapi_info, int level, ArrayOperation& ops) {
1.295.2.11 paf 71: Array_iterator<Operation> i(ops);
1.190 parser 72: while(i.has_next()) {
1.295.2.27.2. 7(paf 73:3): OPCODE opcode=i.next().code();
1.1 paf 74:
1.295.2.27.2. 7(paf 75:3): if(opcode==OP_VALUE || opcode==OP_STRING__WRITE) {
3(paf 76:3): Value& value=*i.next().value;
1.295.2.11 paf 77: debug_printf(sapi_info,
1.133 paf 78: "%*s%s"
79: " \"%s\" %s",
1.295.2.27.2. 7(paf 80:3): level*4, "", opcode_name[opcode],
2(paf 81:3): value.get_string()->cstr(), value.type());
1.133 paf 82: continue;
1.15 paf 83: }
1.295.2.27.2. 7(paf 84:3): debug_printf(sapi_info, "%*s%s", level*4, "", opcode_name[opcode]);
1.1 paf 85:
1.295.2.27.2. 7(paf 86:3): switch(opcode) {
1.184 parser 87: case OP_CURLY_CODE__STORE_PARAM:
88: case OP_EXPR_CODE__STORE_PARAM:
89: case OP_CURLY_CODE__CONSTRUCT:
1.209 paf 90: case OP_NESTED_CODE:
1.226 paf 91: case OP_OBJECT_POOL:
92: case OP_STRING_POOL:
1.237 paf 93: case OP_CALL:
1.295.2.12 paf 94: case OP_CALL__WRITE:
1.295.2.27.2. (paf 95:): if(ArrayOperation* local_ops=i.next().ops)
96:): debug_dump(sapi_info, level+1, *local_ops);
1.1 paf 97: }
98: }
99: }
1.157 parser 100: #endif
1.1 paf 101:
1.295.2.3 paf 102: // Request
1.159 parser 103:
1.295.2.6 paf 104: void Request::execute(ArrayOperation& ops) {
1.295.2.27.2. 1(paf 105:3): register Stack<StackItem>& stack=this->stack; // helps a lot on MSVC: 'esi'
106:3):
6(paf 107:3): const String* debug_name=0; Operation::Info debug_info; //bool is_debug_junction=false;
5(paf 108:3): try{
1.157 parser 109: #ifdef DEBUG_EXECUTE
1.295.2.11 paf 110: debug_printf(sapi_info, "source----------------------------\n");
1.295.2.27.2. (paf 111:): debug_dump(sapi_info, 0, ops);
1.295.2.11 paf 112: debug_printf(sapi_info, "execution-------------------------\n");
1.157 parser 113: #endif
1.295.2.27.2. 2(paf 114:3): for(Array_iterator<Operation> i(ops); i.has_next(); ) {
1.295.2.26 paf 115: if(get_interrupted()) {
116: set_interrupted(false);
1.293 paf 117: throw Exception("parser.interrupted",
1.295.2.27.2. (paf 118:): 0,
1.293 paf 119: "execution stopped");
1.295.2.26 paf 120: }
1.295.2.27.2. 5(paf 121:3): Operation::Info opinfo=i.next().info;
122:3):
1.157 parser 123: #ifdef DEBUG_EXECUTE
1.295.2.27.2. 5(paf 124:3): debug_printf(sapi_info, "%d:%s", stack.top_index()+1, opcode_name[opinfo.code()]);
1.157 parser 125: #endif
1.11 paf 126:
1.295.2.27.2. 5(paf 127:3): switch(opinfo.code()) {
1.51 paf 128: // param in next instruction
1.52 paf 129: case OP_VALUE:
1.32 paf 130: {
1.295.2.27.2. 5(paf 131:3): debug_info=opinfo;
2(paf 132:3): Value& value=*i.next().value;
1.157 parser 133: #ifdef DEBUG_EXECUTE
1.295.2.27.2. 2(paf 134:3): debug_printf(sapi_info, " \"%s\" %s", value.get_string()->cstr(), value.type());
1.157 parser 135: #endif
1.295.2.6 paf 136: stack.push(value);
1.32 paf 137: break;
138: }
1.66 paf 139: case OP_GET_CLASS:
1.38 paf 140: {
1.130 paf 141: // maybe they do ^class:method[] call, remember the fact
1.215 paf 142: wcontext->set_somebody_entered_some_class();
1.98 paf 143:
1.295.2.27.2. 2(paf 144:3): const String& name=stack.pop().string();
145:3): Value* value=classes().get(name);
1.120 paf 146: if(!value)
1.223 paf 147: throw Exception("parser.runtime",
1.295.2.27.2. 2(paf 148:3): &name,
1.143 paf 149: "class is undefined");
1.66 paf 150:
1.295.2.27.2. 2(paf 151:3): stack.push(*value);
1.38 paf 152: break;
153: }
1.32 paf 154:
1.51 paf 155: // OP_WITH
1.187 parser 156: case OP_WITH_ROOT:
157: {
1.295.2.27.2. 2(paf 158:3): stack.push(*method_frame);
1.187 parser 159: break;
160: }
1.37 paf 161: case OP_WITH_SELF:
162: {
1.295.2.27.2. 2(paf 163:3): stack.push(get_self());
1.37 paf 164: break;
165: }
1.15 paf 166: case OP_WITH_READ:
167: {
1.295.2.27.2. 2(paf 168:3): stack.push(*rcontext);
1.20 paf 169: break;
170: }
1.37 paf 171: case OP_WITH_WRITE:
1.20 paf 172: {
1.287 paf 173: if(wcontext==method_frame)
174: throw Exception("parser.runtime",
1.295.2.27.2. (paf 175:): 0,
1.287 paf 176: "$.name outside of $name[...]");
177:
1.295.2.27.2. 2(paf 178:3): stack.push(*wcontext);
1.20 paf 179: break;
180: }
1.37 paf 181:
1.51 paf 182: // OTHER ACTIONS BUT WITHs
1.80 paf 183: case OP_CONSTRUCT_VALUE:
1.20 paf 184: {
1.295.2.27.2. 2(paf 185:3): Value& value=stack.pop().value();
5(paf 186:3): const String& name=stack.pop().string(); debug_name=&name;
2(paf 187:3): Value& ncontext=stack.pop().value();
188:3): ncontext.put_element(name, &value, false);
1.213 paf 189: break;
190: }
1.80 paf 191: case OP_CONSTRUCT_EXPR:
192: {
1.219 paf 193: // see OP_PREPARE_TO_EXPRESSION
194: wcontext->set_in_expression(false);
195:
1.295.2.27.2. 2(paf 196:3): Value& value=stack.pop().value();
5(paf 197:3): const String& name=stack.pop().string(); debug_name=&name;
2(paf 198:3): Value& ncontext=stack.pop().value();
199:3): ncontext.put_element(name, &value.as_expr_result(), false);
1.80 paf 200: break;
201: }
1.182 parser 202: case OP_CURLY_CODE__CONSTRUCT:
203: {
1.295.2.27.2. 2(paf 204:3): ArrayOperation& local_ops=*i.next().ops;
1.182 parser 205: #ifdef DEBUG_EXECUTE
1.295.2.27.2. 2(paf 206:3): debug_printf(sapi_info, " (%d)\n", local_ops.count());
3(paf 207:3): debug_dump(sapi_info, 1, local_ops);
1.182 parser 208: #endif
1.295.2.27.2. 2(paf 209:3): Value& value=*new VJunction(new Junction(
1.295.2.7 paf 210: get_self(), 0,
1.257 paf 211: method_frame,
1.240 paf 212: rcontext,
213: wcontext,
1.295.2.27.2. 2(paf 214:3): &local_ops));
1.238 paf 215:
1.295.2.27.2. 5(paf 216:3): const String& name=stack.pop().string(); debug_name=&name;
2(paf 217:3): Value& ncontext=stack.pop().value();
218:3): ncontext.put_element(name, &value, false);
1.182 parser 219: break;
220: }
1.209 paf 221: case OP_NESTED_CODE:
222: {
1.295.2.27.2. 2(paf 223:3): ArrayOperation& local_ops=*i.next().ops;
1.209 paf 224: #ifdef DEBUG_EXECUTE
1.295.2.27.2. 2(paf 225:3): debug_printf(sapi_info, " (%d)\n", local_ops.count());
3(paf 226:3): debug_dump(sapi_info, 1, local_ops);
1.209 paf 227: #endif
1.295.2.6 paf 228: stack.push(local_ops);
1.209 paf 229: break;
230: }
1.108 paf 231: case OP_WRITE_VALUE:
1.13 paf 232: {
1.295.2.27.2. 2(paf 233:3): Value& value=stack.pop().value();
234:3): write_assign_lang(value);
1.86 paf 235: break;
236: }
1.108 paf 237: case OP_WRITE_EXPR_RESULT:
238: {
1.295.2.27.2. 2(paf 239:3): Value& value=stack.pop().value();
240:3): write_no_lang(value.as_expr_result());
1.230 paf 241:
242: // must be after write(result) and
1.219 paf 243: // see OP_PREPARE_TO_EXPRESSION
244: wcontext->set_in_expression(false);
1.108 paf 245: break;
246: }
1.86 paf 247: case OP_STRING__WRITE:
248: {
1.295.2.27.2. 2(paf 249:3): Value* value=i.next().value;
1.157 parser 250: #ifdef DEBUG_EXECUTE
1.295.2.27.2. (paf 251:): debug_printf(sapi_info, " \"%s\"", value->get_string()->cstr());
1.157 parser 252: #endif
1.295.2.27.2. (paf 253:): write_no_lang(*value->get_string());
1.13 paf 254: break;
1.14 paf 255: }
1.13 paf 256:
1.215 paf 257: case OP_GET_ELEMENT_OR_OPERATOR:
258: {
1.295.2.27.2. 5(paf 259:3): const String& name=stack.pop().string(); debug_name=&name;
260:3): Value& ncontext=stack.pop().value();
261:3): Value& value=get_element(ncontext, name, true);
1.295.2.6 paf 262: stack.push(value);
1.215 paf 263: break;
264: }
1.15 paf 265: case OP_GET_ELEMENT:
1.11 paf 266: {
1.295.2.27.2. 5(paf 267:3): const String& name=stack.pop().string(); debug_name=&name;
268:3): Value& ncontext=stack.pop().value();
269:3): Value& value=get_element(ncontext, name, false);
1.295.2.6 paf 270: stack.push(value);
1.17 paf 271: break;
272: }
273:
1.18 paf 274: case OP_GET_ELEMENT__WRITE:
1.17 paf 275: {
1.295.2.27.2. 5(paf 276:3): const String& name=stack.pop().string(); debug_name=&name;
277:3): Value& ncontext=stack.pop().value();
278:3): Value& value=get_element(ncontext, name, false);
2(paf 279:3): write_assign_lang(value);
1.17 paf 280: break;
281: }
282:
1.32 paf 283:
1.226 paf 284: case OP_OBJECT_POOL:
1.17 paf 285: {
1.295.2.27.2. 2(paf 286:3): ArrayOperation& local_ops=*i.next().ops;
1.226 paf 287:
1.257 paf 288: WContext *saved_wcontext=wcontext;
1.295.2.27.2. (paf 289:): String::Language saved_lang=flang;
290:): flang=String::L_PASS_APPENDED;
291:): WWrapper local(0/*empty*/, wcontext);
1.226 paf 292: wcontext=&local;
293:
1.295.2.27.2. 2(paf 294:3): execute(local_ops);
1.226 paf 295:
1.295.2.27.2. 2(paf 296:3): stack.push(wcontext->result().as_value());
1.257 paf 297: flang=saved_lang;
298: wcontext=saved_wcontext;
1.13 paf 299: break;
1.15 paf 300: }
1.13 paf 301:
1.226 paf 302: case OP_STRING_POOL:
1.49 paf 303: {
1.295.2.27.2. 2(paf 304:3): ArrayOperation& local_ops=*i.next().ops;
1.226 paf 305:
1.257 paf 306: WContext *saved_wcontext=wcontext;
1.295.2.27.2. (paf 307:): WWrapper local(0 /*empty*/, wcontext);
1.226 paf 308: wcontext=&local;
309:
1.295.2.27.2. 2(paf 310:3): execute(local_ops);
1.226 paf 311:
1.295.2.27.2. 2(paf 312:3): Value* value;
1.49 paf 313: // from "$a $b" part of expression taking only string value,
314: // ignoring any other content of wcontext
1.295.2.27.2. (paf 315:): if(const String* string=wcontext->get_string())
316:): value=new VString(*string);
1.80 paf 317: else
1.295.2.27.2. (paf 318:): value=new VVoid;
2(paf 319:3): stack.push(*value);
1.295.2.7 paf 320:
1.257 paf 321: wcontext=saved_wcontext;
1.49 paf 322: break;
323: }
324:
1.51 paf 325: // CALL
1.237 paf 326: case OP_STORE_PARAM:
1.28 paf 327: {
1.295.2.27.2. 2(paf 328:3): Value& value=stack.pop().value();
329:3): VMethodFrame& frame=stack.top_value().method_frame();
1.295.2.7 paf 330: // this op is executed from CALL local_ops only, so may skip the check "method_frame_to_fill==0"
1.295.2.27.2. 2(paf 331:3): frame.store_param(value);
1.28 paf 332: break;
333: }
1.237 paf 334: case OP_CURLY_CODE__STORE_PARAM:
335: case OP_EXPR_CODE__STORE_PARAM:
1.28 paf 336: {
1.237 paf 337: // code
1.295.2.27.2. 2(paf 338:3): ArrayOperation& local_ops=*i.next().ops;
339:3): VMethodFrame& frame=stack.top_value().method_frame();
1.237 paf 340: #ifdef DEBUG_EXECUTE
1.295.2.27.2. 2(paf 341:3): debug_printf(sapi_info, " (%d)\n", local_ops.count());
3(paf 342:3): debug_dump(sapi_info, 1, local_ops);
1.237 paf 343: #endif
344: // when they evaluate expression parameter,
345: // the object expression result
346: // does not need to be written into calling frame
347: // it must go into any expressions using that parameter
348: // hence, we zero junction.wcontext here, and later
349: // in .process we would test that field
350: // in decision "which wwrapper to use"
1.295.2.27.2. 2(paf 351:3): Value& value=*new VJunction(new Junction(
1.295.2.7 paf 352: get_self(), 0,
1.257 paf 353: method_frame,
1.237 paf 354: rcontext,
1.295.2.27.2. 5(paf 355:3): opinfo.code()==OP_EXPR_CODE__STORE_PARAM?0:wcontext,
2(paf 356:3): &local_ops));
1.237 paf 357: // store param
358: // this op is executed from CALL local_ops only, so can not check method_frame_to_fill==0
1.295.2.27.2. 2(paf 359:3): frame.store_param(value);
1.29 paf 360: break;
361: }
362:
1.186 parser 363: case OP_PREPARE_TO_CONSTRUCT_OBJECT:
364: {
1.200 paf 365: wcontext->set_constructing(true);
1.186 parser 366: break;
367: }
1.219 paf 368:
369: case OP_PREPARE_TO_EXPRESSION:
370: {
371: wcontext->set_in_expression(true);
372: break;
373: }
374:
1.186 parser 375: case OP_CALL:
1.232 paf 376: case OP_CALL__WRITE:
1.29 paf 377: {
1.295.2.27.2. 6(paf 378:3): //is_debug_junction=true;
2(paf 379:3): ArrayOperation* local_ops=i.next().ops;
1.157 parser 380: #ifdef DEBUG_EXECUTE
1.295.2.27.2. 3(paf 381:3): debug_printf(sapi_info, " (%d)\n", local_ops?local_ops->count():0);
1.295.2.13 paf 382: if(local_ops)
1.295.2.27.2. (paf 383:): debug_dump(sapi_info, 1, *local_ops);
1.237 paf 384:
1.295.2.11 paf 385: debug_printf(sapi_info, "->\n");
1.157 parser 386: #endif
1.295.2.27.2. 2(paf 387:3): Value& value=stack.pop().value();
1.237 paf 388:
1.295.2.27.2. 2(paf 389:3): Junction* junction=value.get_junction();
1.237 paf 390: if(!junction)
391: throw Exception("parser.runtime",
1.295.2.27.2. (paf 392:): 0,
1.237 paf 393: "(%s) not a method or junction, can not call it",
1.295.2.27.2. 2(paf 394:3): value.type());
1.282 paf 395: /* no check needed, code compiled the way that that's impossible
1.276 paf 396: // check:
397: // that this is method-junction, not a code-junction
1.278 paf 398: // [disabling these contstructions:]
399: // $junction{code}
400: // ^junction[]
1.276 paf 401: if(!junction->method)
402: throw Exception("parser.runtime",
1.295.2.27.2. (paf 403:):
1.276 paf 404: "(%s) is code junction, can not call it",
1.295.2.27.2. 2(paf 405:3): value.type());
1.282 paf 406: */
1.237 paf 407:
1.295.2.27.2. (paf 408:): VMethodFrame frame(*junction, method_frame/*caller*/);
1.237 paf 409: if(local_ops){ // store param code goes here
1.295.2.27.2. 2(paf 410:3): stack.push(frame); // argument for *STORE_PARAM ops
1.237 paf 411: execute(*local_ops);
1.295.2.27.2. 2(paf 412:3): stack.pop().value();
1.237 paf 413: }
414: frame.fill_unspecified_params();
1.257 paf 415: VMethodFrame *saved_method_frame=method_frame;
1.295.2.6 paf 416: Value* saved_rcontext=rcontext;
1.257 paf 417: WContext *saved_wcontext=wcontext;
1.45 paf 418:
1.295.2.27.2. (paf 419:): VStateless_class& called_class=*frame.junction.self.get_class();
420:): Value* new_self=&get_self();
1.200 paf 421: if(wcontext->get_constructing()) {
422: wcontext->set_constructing(false);
1.237 paf 423: if(frame.junction.method->call_type!=Method::CT_STATIC) {
1.138 paf 424: // this is a constructor call
1.185 parser 425:
1.295.2.27.2. (paf 426:): if(Value* value=called_class.create_new_value()) {
1.204 paf 427: // some stateless_class creatable derivates
1.285 paf 428: new_self=value;
1.204 paf 429: } else
1.223 paf 430: throw Exception("parser.runtime",
1.295.2.27.2. (paf 431:): 0, //&frame.name(),
1.204 paf 432: "is not a constructor, system class '%s' can be constructed only implicitly",
1.295.2.27.2. (paf 433:): called_class.name().cstr());
1.204 paf 434:
1.295.2.27.2. (paf 435:): frame.write(*new_self,
436:): String::L_CLEAN // not used, always an object, not string
1.83 paf 437: );
1.185 parser 438: } else
1.223 paf 439: throw Exception("parser.runtime",
1.295.2.27.2. (paf 440:): 0, //&frame.name(),
1.185 parser 441: "method is static and can not be used as constructor");
1.249 paf 442: } else
1.295.2.27.2. (paf 443:): new_self=&frame.junction.self;
1.75 paf 444:
1.295.2.27.2. (paf 445:): frame.set_self(*new_self);
1.219 paf 446:
447: // see OP_PREPARE_TO_EXPRESSION
1.237 paf 448: frame.set_in_expression(wcontext->get_in_expression());
1.219 paf 449:
1.237 paf 450: rcontext=wcontext=&frame;
1.47 paf 451: {
1.237 paf 452: const Method& method=*frame.junction.method;
1.134 paf 453: Method::Call_type call_type=
1.295.2.27.2. (paf 454:): &called_class==new_self ? Method::CT_STATIC : Method::CT_DYNAMIC;
1.134 paf 455: if(
456: method.call_type==Method::CT_ANY ||
1.197 parser 457: method.call_type==call_type) { // allowed call type?
1.295.2.27.2. 5(paf 458:3): method_frame=&frame;
459:3): if(method.native_code) { // native code?
460:3): method.check_actual_numbered_params(
461:3): frame.junction.self,
462:3): /*frame.name(), */frame.numbered_params());
463:3): method.native_code(
464:3): *this,
465:3): /*frame.name(), */frame.numbered_params()); // execute it
466:3): } else // parser code, execute it
467:3): recoursion_checked_execute(/*frame.name(), */*method.parser_code);
1.197 parser 468: } else
1.223 paf 469: throw Exception("parser.runtime",
1.295.2.27.2. (paf 470:): 0, //&frame.name(),
1.134 paf 471: "is not allowed to be called %s",
472: call_type==Method::CT_STATIC?"statically":"dynamically");
473:
1.47 paf 474: }
1.232 paf 475: StringOrValue result=wcontext->result();
1.45 paf 476:
1.257 paf 477: wcontext=saved_wcontext;
478: rcontext=saved_rcontext;
479: method_frame=saved_method_frame;
1.213 paf 480:
1.295.2.27.2. 5(paf 481:3): if(opinfo.code()==OP_CALL__WRITE) {
(paf 482:): write_assign_lang(result);
1.232 paf 483: } else { // OP_CALL
1.295.2.27.2. 2(paf 484:3): stack.push(result.as_value());
1.232 paf 485: }
486:
1.157 parser 487: #ifdef DEBUG_EXECUTE
1.295.2.11 paf 488: debug_printf(sapi_info, "<-returned");
1.157 parser 489: #endif
1.295.2.27.2. 6(paf 490:3): //is_debug_junction=false;
1.49 paf 491: break;
492: }
493:
1.55 paf 494: // expression ops: unary
495: case OP_NEG:
496: {
1.295.2.27.2. 2(paf 497:3): Value& a=stack.pop().value();
498:3): Value& value=*new VDouble(-a.as_double());
1.295.2.6 paf 499: stack.push(value);
1.55 paf 500: break;
501: }
502: case OP_INV:
503: {
1.295.2.27.2. 2(paf 504:3): Value& a=stack.pop().value();
505:3): Value& value=*new VDouble(~a.as_int());
1.295.2.6 paf 506: stack.push(value);
1.55 paf 507: break;
508: }
509: case OP_NOT:
510: {
1.295.2.27.2. 2(paf 511:3): Value& a=stack.pop().value();
512:3): Value& value=*new VBool(!a.as_bool());
1.295.2.6 paf 513: stack.push(value);
1.55 paf 514: break;
515: }
1.62 paf 516: case OP_DEF:
517: {
1.295.2.27.2. 2(paf 518:3): Value& a=stack.pop().value();
519:3): Value& value=*new VBool(a.is_defined());
1.295.2.6 paf 520: stack.push(value);
1.62 paf 521: break;
522: }
523: case OP_IN:
524: {
1.295.2.27.2. 2(paf 525:3): Value& a=stack.pop().value();
526:3): const String& path=a.as_string();
527:3): Value& value=*new VBool(request_info.uri && *request_info.uri && path.this_starts(request_info.uri));
1.295.2.6 paf 528: stack.push(value);
1.62 paf 529: break;
530: }
531: case OP_FEXISTS:
532: {
1.295.2.27.2. 2(paf 533:3): Value& a=stack.pop().value();
534:3): Value& value=*new VBool(file_readable(absolute(a.as_string())));
1.295.2.6 paf 535: stack.push(value);
1.148 paf 536: break;
537: }
538: case OP_DEXISTS:
539: {
1.295.2.27.2. 2(paf 540:3): Value& a=stack.pop().value();
541:3): Value& value=*new VBool(dir_readable(absolute(a.as_string())));
1.295.2.6 paf 542: stack.push(value);
1.62 paf 543: break;
544: }
1.55 paf 545:
546: // expression ops: binary
547: case OP_SUB:
1.53 paf 548: {
1.295.2.27.2. 2(paf 549:3): Value& b=stack.pop().value(); Value& a=stack.pop().value();
550:3): Value& value=*new VDouble(a.as_double() - b.as_double());
1.295.2.6 paf 551: stack.push(value);
1.53 paf 552: break;
553: }
1.55 paf 554: case OP_ADD:
1.53 paf 555: {
1.295.2.27.2. 2(paf 556:3): Value& b=stack.pop().value(); Value& a=stack.pop().value();
557:3): Value& value=*new VDouble(a.as_double() + b.as_double());
1.295.2.6 paf 558: stack.push(value);
1.53 paf 559: break;
560: }
1.49 paf 561: case OP_MUL:
562: {
1.295.2.27.2. 2(paf 563:3): Value& b=stack.pop().value(); Value& a=stack.pop().value();
564:3): Value& value=*new VDouble(a.as_double() * b.as_double());
1.295.2.6 paf 565: stack.push(value);
1.53 paf 566: break;
567: }
568: case OP_DIV:
569: {
1.295.2.27.2. 2(paf 570:3): Value& b=stack.pop().value(); Value& a=stack.pop().value();
1.170 parser 571:
1.295.2.27.2. 2(paf 572:3): double a_double=a.as_double();
573:3): double b_double=b.as_double();
1.170 parser 574:
1.171 parser 575: if(b_double == 0) {
1.295.2.27.2. 2(paf 576:3): //const String* problem_source=b.as_string();
1.223 paf 577: throw Exception("number.zerodivision",
1.295.2.27.2. (paf 578:): 0, //problem_source,
1.170 parser 579: "Division by zero");
1.171 parser 580: }
1.170 parser 581:
1.295.2.27.2. 2(paf 582:3): Value& value=*new VDouble(a_double / b_double);
1.295.2.6 paf 583: stack.push(value);
1.54 paf 584: break;
585: }
1.55 paf 586: case OP_MOD:
587: {
1.295.2.27.2. 2(paf 588:3): Value& b=stack.pop().value(); Value& a=stack.pop().value();
1.170 parser 589:
1.295.2.27.2. 2(paf 590:3): double a_double=a.as_double();
591:3): double b_double=b.as_double();
1.170 parser 592:
1.173 parser 593: if(b_double == 0) {
1.295.2.27.2. 2(paf 594:3): //const String* problem_source=b.as_string();
1.223 paf 595: throw Exception("number.zerodivision",
1.295.2.27.2. (paf 596:): 0, //problem_source,
1.170 parser 597: "Modulus by zero");
1.171 parser 598: }
1.170 parser 599:
1.295.2.27.2. 2(paf 600:3): Value& value=*new VDouble(fmod(a_double, b_double));
1.295.2.6 paf 601: stack.push(value);
1.201 paf 602: break;
603: }
604: case OP_INTDIV:
605: {
1.295.2.27.2. 2(paf 606:3): Value& b=stack.pop().value(); Value& a=stack.pop().value();
1.201 paf 607:
1.295.2.27.2. 2(paf 608:3): int a_int=a.as_int();
609:3): int b_int=b.as_int();
1.201 paf 610:
611: if(b_int == 0) {
1.295.2.27.2. 2(paf 612:3): //const String* problem_source=b.as_string();
1.223 paf 613: throw Exception("number.zerodivision",
1.295.2.27.2. (paf 614:): 0, //problem_source,
1.201 paf 615: "Division by zero");
616: }
617:
1.295.2.27.2. 2(paf 618:3): Value& value=*new VInt(a_int / b_int);
1.295.2.6 paf 619: stack.push(value);
1.55 paf 620: break;
621: }
1.274 paf 622: case OP_BIN_SL:
623: {
1.295.2.27.2. 2(paf 624:3): Value& b=stack.pop().value(); Value& a=stack.pop().value();
625:3): Value& value=*new VInt(
626:3): a.as_int() <<
627:3): b.as_int());
1.295.2.6 paf 628: stack.push(value);
1.274 paf 629: break;
630: }
631: case OP_BIN_SR:
632: {
1.295.2.27.2. 2(paf 633:3): Value& b=stack.pop().value(); Value& a=stack.pop().value();
634:3): Value& value=*new VInt(
635:3): a.as_int() >>
636:3): b.as_int());
1.295.2.6 paf 637: stack.push(value);
1.274 paf 638: break;
639: }
1.55 paf 640: case OP_BIN_AND:
1.54 paf 641: {
1.295.2.27.2. 2(paf 642:3): Value& b=stack.pop().value(); Value& a=stack.pop().value();
643:3): Value& value=*new VInt(
644:3): a.as_int() &
645:3): b.as_int());
1.295.2.6 paf 646: stack.push(value);
1.54 paf 647: break;
648: }
1.55 paf 649: case OP_BIN_OR:
1.54 paf 650: {
1.295.2.27.2. 2(paf 651:3): Value& b=stack.pop().value(); Value& a=stack.pop().value();
652:3): Value& value=*new VInt(
653:3): a.as_int() |
654:3): b.as_int());
1.295.2.6 paf 655: stack.push(value);
1.55 paf 656: break;
657: }
1.56 paf 658: case OP_BIN_XOR:
659: {
1.295.2.27.2. 2(paf 660:3): Value& b=stack.pop().value(); Value& a=stack.pop().value();
661:3): Value& value=*new VInt(
662:3): a.as_int() ^
663:3): b.as_int());
1.295.2.6 paf 664: stack.push(value);
1.56 paf 665: break;
666: }
1.55 paf 667: case OP_LOG_AND:
668: {
1.295.2.27.2. 2(paf 669:3): ArrayOperation& local_ops=stack.pop().ops(); Value& a=stack.pop().value();
1.263 paf 670: bool result;
1.295.2.27.2. 2(paf 671:3): if(a.as_bool()) {
672:3): execute(local_ops);
673:3): Value& b=stack.pop().value();
674:3): result=b.as_bool();
1.209 paf 675: } else
1.263 paf 676: result=false;
1.295.2.27.2. 2(paf 677:3): Value& value=*new VBool(result);
1.295.2.6 paf 678: stack.push(value);
1.55 paf 679: break;
680: }
681: case OP_LOG_OR:
682: {
1.295.2.27.2. 2(paf 683:3): ArrayOperation& local_ops=stack.pop().ops(); Value& a=stack.pop().value();
1.263 paf 684: bool result;
1.295.2.27.2. 2(paf 685:3): if(a.as_bool())
1.263 paf 686: result=true;
1.209 paf 687: else {
1.295.2.27.2. 2(paf 688:3): execute(local_ops);
689:3): Value& b=stack.pop().value();
690:3): result=b.as_bool();
1.209 paf 691: }
1.295.2.27.2. 2(paf 692:3): Value& value=*new VBool(result);
1.295.2.6 paf 693: stack.push(value);
1.56 paf 694: break;
695: }
696: case OP_LOG_XOR:
697: {
1.295.2.27.2. 2(paf 698:3): Value& b=stack.pop().value(); Value& a=stack.pop().value();
699:3): Value& value=*new VBool(a.as_bool() ^ b.as_bool());
1.295.2.6 paf 700: stack.push(value);
1.55 paf 701: break;
702: }
703: case OP_NUM_LT:
704: {
1.295.2.27.2. 2(paf 705:3): Value& b=stack.pop().value(); Value& a=stack.pop().value();
706:3): double result=a.as_double() - b.as_double();
707:3): Value& value=*new VBool(result < 0.0);
1.295.2.6 paf 708: stack.push(value);
1.55 paf 709: break;
710: }
711: case OP_NUM_GT:
712: {
1.295.2.27.2. 2(paf 713:3): Value& b=stack.pop().value(); Value& a=stack.pop().value();
714:3): double result=a.as_double() - b.as_double();
715:3): Value& value=*new VBool(result > 0.0);
1.295.2.6 paf 716: stack.push(value);
1.55 paf 717: break;
718: }
719: case OP_NUM_LE:
720: {
1.295.2.27.2. 2(paf 721:3): Value& b=stack.pop().value(); Value& a=stack.pop().value();
722:3): double result=a.as_double() - b.as_double();
723:3): Value& value=*new VBool(result <= 0.0);
1.295.2.6 paf 724: stack.push(value);
1.55 paf 725: break;
726: }
727: case OP_NUM_GE:
728: {
1.295.2.27.2. 2(paf 729:3): Value& b=stack.pop().value(); Value& a=stack.pop().value();
730:3): double result=a.as_double() - b.as_double();
731:3): Value& value=*new VBool(result >= 0.0);
1.295.2.6 paf 732: stack.push(value);
1.55 paf 733: break;
734: }
735: case OP_NUM_EQ:
736: {
1.295.2.27.2. 2(paf 737:3): Value& b=stack.pop().value(); Value& a=stack.pop().value();
738:3): double result=a.as_double() - b.as_double();
739:3): Value& value=*new VBool(result == 0.0);
1.295.2.6 paf 740: stack.push(value);
1.55 paf 741: break;
742: }
743: case OP_NUM_NE:
744: {
1.295.2.27.2. 2(paf 745:3): Value& b=stack.pop().value(); Value& a=stack.pop().value();
746:3): double result=a.as_double() - b.as_double();
747:3): Value& value=*new VBool(result != 0.0);
1.295.2.6 paf 748: stack.push(value);
1.54 paf 749: break;
750: }
1.58 paf 751: case OP_STR_LT:
752: {
1.295.2.27.2. 2(paf 753:3): Value& b=stack.pop().value(); Value& a=stack.pop().value();
754:3): Value& value=*new VBool(a.as_string() < b.as_string());
1.295.2.6 paf 755: stack.push(value);
1.58 paf 756: break;
757: }
758: case OP_STR_GT:
759: {
1.295.2.27.2. 2(paf 760:3): Value& b=stack.pop().value(); Value& a=stack.pop().value();
761:3): Value& value=*new VBool(a.as_string() > b.as_string());
1.295.2.6 paf 762: stack.push(value);
1.58 paf 763: break;
764: }
1.55 paf 765: case OP_STR_LE:
1.58 paf 766: {
1.295.2.27.2. 2(paf 767:3): Value& b=stack.pop().value(); Value& a=stack.pop().value();
768:3): Value& value=*new VBool(a.as_string() <= b.as_string());
1.295.2.6 paf 769: stack.push(value);
1.58 paf 770: break;
771: }
1.55 paf 772: case OP_STR_GE:
1.54 paf 773: {
1.295.2.27.2. 2(paf 774:3): Value& b=stack.pop().value(); Value& a=stack.pop().value();
775:3): Value& value=*new VBool(a.as_string() >= b.as_string());
1.295.2.6 paf 776: stack.push(value);
1.58 paf 777: break;
778: }
779: case OP_STR_EQ:
780: {
1.295.2.27.2. 2(paf 781:3): Value& b=stack.pop().value(); Value& a=stack.pop().value();
782:3): Value& value=*new VBool(a.as_string() == b.as_string());
1.295.2.6 paf 783: stack.push(value);
1.58 paf 784: break;
785: }
786: case OP_STR_NE:
787: {
1.295.2.27.2. 2(paf 788:3): Value& b=stack.pop().value(); Value& a=stack.pop().value();
789:3): Value& value=*new VBool(a.as_string() != b.as_string());
1.295.2.6 paf 790: stack.push(value);
1.103 paf 791: break;
792: }
793: case OP_IS:
794: {
1.295.2.27.2. 2(paf 795:3): Value& b=stack.pop().value(); Value& a=stack.pop().value();
796:3): Value& value=*new VBool(a.is(b.as_string().cstr()));
1.295.2.6 paf 797: stack.push(value);
1.28 paf 798: break;
799: }
800:
1.11 paf 801: default:
1.295.2.27.2. (paf 802:): throw Exception(0,
803:): 0,
6(paf 804:3): "invalid opcode %d", opinfo.code());
1.11 paf 805: }
806: }
1.295.2.27.2. 5(paf 807:3): } catch(...) {
808:3): // record it to stack trace
6(paf 809:3): //if(is_debug_junction)
810:3): exception_trace.push(Trace(debug_name, debug_info));
5(paf 811:3): rethrow;
812:3): }
1.1 paf 813: }
1.17 paf 814:
1.292 paf 815: /**
816: @todo cache|prepare junctions
817: @bug ^superbase:method would dynamically call ^base:method if there is any
818: */
1.295.2.27.2. 5(paf 819:3): Value& Request::get_element(Value& ncontext, const String& name, bool can_call_operator) {
(paf 820:): Value* value=0;
1.249 paf 821: if(can_call_operator) {
1.295.2.27.2. (paf 822:): if(Method* method=main_class.get_method(name)) // looking operator of that name FIRST
823:): value=new VJunction(new Junction(
824:): main_class, method, 0,0,0, 0));
1.249 paf 825: }
826: if(!value) {
827: if(!wcontext->get_constructing() // not constructing
828: && wcontext->get_somebody_entered_some_class() ) // ^class:method
1.295.2.27.2. 2(paf 829:3): if(VStateless_class *called_class=ncontext.get_class())
1.249 paf 830: if(VStateless_class *read_class=rcontext->get_class())
831: if(read_class->derived_from(*called_class)) // current derived from called
1.295.2.27.2. (paf 832:): if(Value* base=get_self().base()) { // doing DYNAMIC call
1.295.2.27 paf 833: Temp_derived temp_derived(*base, 0); // temporarily prevent go-back-down virtual calls
1.290 paf 834: value=base->get_element(name, *base, false); // virtual-up lookup starting from parent
1.289 paf 835: goto value_ready;
1.249 paf 836: }
837: }
1.216 paf 838: if(!value)
1.295.2.27.2. 2(paf 839:3): value=ncontext.get_element(name, ncontext, false);
1.291 paf 840:
841: if(value && wcontext->get_constructing())
1.295.2.27.2. (paf 842:): if(Junction* junction=value->get_junction()) {
2(paf 843:3): if(junction->self.get_class()!=&ncontext)
1.291 paf 844: throw Exception("parser.runtime",
1.295.2.27.2. (paf 845:): &name,
1.295.2.20 paf 846: "constructor must be declared in class '%s'",
1.295.2.27.2. 2(paf 847:3): ncontext.get_class()->name_cstr());
1.291 paf 848: }
1.249 paf 849:
1.289 paf 850: value_ready:
1.284 paf 851: if(value)
1.295.2.27.2. (paf 852:): value=&process_to_value(*value); // process possible code-junction
1.284 paf 853: else
1.295.2.27.2. (paf 854:): value=new VVoid;
1.63 paf 855:
1.295.2.27.2. 2(paf 856:3): return *value;
1.34 paf 857: }
1.70 paf 858:
1.162 parser 859: /** @param intercept_string
1.116 paf 860: - true:
861: they want result=string value,
862: possible object result goes to wcontext
863: - false:
864: they want any result[string|object]
865: nothing goes to wcontext.
1.125 paf 866: used in @c (expression) params evaluation
1.224 paf 867:
868: using the fact it's either string_ or value_ result requested to speed up checkes
1.116 paf 869: */
1.295.2.27.2. (paf 870:): StringOrValue Request::process(Value& input_value, bool intercept_string) {
1.228 paf 871: StringOrValue result;
1.295.2.27.2. (paf 872:): Junction* junction=input_value.get_junction();
1.70 paf 873: if(junction && junction->code) { // is it a code-junction?
1.92 paf 874: // process it
1.157 parser 875: #ifdef DEBUG_EXECUTE
1.295.2.11 paf 876: debug_printf(sapi_info, "ja->\n");
1.157 parser 877: #endif
1.238 paf 878:
1.257 paf 879: if(!junction->method_frame)
1.240 paf 880: throw Exception("parser.runtime",
1.295.2.27.2. (paf 881:): 0,
1.240 paf 882: "junction used outside of context");
883:
1.257 paf 884: VMethodFrame *saved_method_frame=method_frame;
1.295.2.6 paf 885: Value* saved_rcontext=rcontext;
1.257 paf 886: WContext *saved_wcontext=wcontext;
1.240 paf 887:
1.257 paf 888: method_frame=junction->method_frame;
1.240 paf 889: rcontext=junction->rcontext;
1.225 paf 890:
1.109 paf 891: // for expression method params
892: // wcontext is set 0
893: // using the fact in decision "which wwrapper to use"
1.240 paf 894: bool using_code_frame=intercept_string && junction->wcontext;
1.109 paf 895: if(using_code_frame) {
1.71 paf 896: // almost plain wwrapper about junction wcontext,
897: // BUT intercepts string writes
1.295.2.27.2. (paf 898:): VCodeFrame local(*junction->wcontext, junction->wcontext);
1.225 paf 899: wcontext=&local;
1.207 paf 900:
1.225 paf 901: // execute it
1.295.2.27.2. (paf 902:): recoursion_checked_execute(/*0/*result_name* /, */ *junction->code);
1.226 paf 903:
1.71 paf 904: // CodeFrame soul:
905: // string writes were intercepted
906: // returning them as the result of getting code-junction
1.295.2.27.2. (paf 907:): result.set_string(*wcontext->get_string());
1.224 paf 908: } else {
1.225 paf 909: // plain wwrapper
1.295.2.27.2. (paf 910:): WWrapper local(0/*empty*/, wcontext);
1.225 paf 911: wcontext=&local;
912:
913: // execute it
1.295.2.27.2. (paf 914:): recoursion_checked_execute(/*0/*result_name* /, */ *junction->code);
1.226 paf 915:
1.228 paf 916: result=wcontext->result();
1.224 paf 917: }
1.70 paf 918:
1.257 paf 919: wcontext=saved_wcontext;
920: rcontext=saved_rcontext;
921: method_frame=saved_method_frame;
1.70 paf 922:
1.157 parser 923: #ifdef DEBUG_EXECUTE
1.295.2.11 paf 924: debug_printf(sapi_info, "<-ja returned");
1.157 parser 925: #endif
1.224 paf 926: } else {
1.228 paf 927: result.set_value(input_value);
1.224 paf 928: }
1.228 paf 929: return result;
1.85 paf 930: }
931:
1.295.2.27.2. (paf 932:): const String& Request::execute_method(VMethodFrame& amethod_frame, const Method& method) {
1.257 paf 933: VMethodFrame *saved_method_frame=method_frame;
1.295.2.6 paf 934: Value* saved_rcontext=rcontext;
1.257 paf 935: WContext *saved_wcontext=wcontext;
1.99 paf 936:
937: // initialize contexts
1.286 paf 938: rcontext=wcontext=method_frame=&amethod_frame;
1.99 paf 939:
940: // execute!
941: execute(*method.parser_code);
942:
943: // result
1.295.2.27.2. (paf 944:): const String& result=wcontext->result().as_string();
1.208 paf 945:
1.257 paf 946: wcontext=saved_wcontext;
947: rcontext=saved_rcontext;
948: method_frame=saved_method_frame;
1.242 paf 949:
950: // return
951: return result;
1.208 paf 952: }
953:
1.295.2.27.2. (paf 954:): const String* Request::execute_method(Value& aself,
955:): const Method& method, VString* optional_param,
1.295.2.7 paf 956: bool do_return_string) {
1.257 paf 957: VMethodFrame *saved_method_frame=method_frame;
1.295.2.6 paf 958: Value* saved_rcontext=rcontext;
1.257 paf 959: WContext *saved_wcontext=wcontext;
1.208 paf 960:
1.295.2.27.2. (paf 961:): Junction local_junction(aself, &method, 0,0,0, 0);
962:): VMethodFrame local_frame(/*method.name, */local_junction, method_frame/*caller*/);
1.242 paf 963: if(optional_param && local_frame.can_store_param()) {
1.295.2.27.2. (paf 964:): local_frame.store_param(*optional_param);
1.242 paf 965: local_frame.fill_unspecified_params();
966: }
1.285 paf 967: local_frame.set_self(aself);
1.257 paf 968: rcontext=wcontext=method_frame=&local_frame;
1.246 paf 969:
970: // prevent non-string writes for better error reporting
1.295.2.7 paf 971: if(do_return_string)
1.295.2.27.2. (paf 972:): wcontext->write(local_frame);
1.208 paf 973:
974: // execute!
975: execute(*method.parser_code);
976:
977: // result
1.295.2.27.2. (paf 978:): const String* result=0;
1.295.2.7 paf 979: if(do_return_string)
1.295.2.27.2. (paf 980:): result=&wcontext->result().as_string();
1.99 paf 981:
1.257 paf 982: wcontext=saved_wcontext;
983: rcontext=saved_rcontext;
984: method_frame=saved_method_frame;
1.295.2.7 paf 985:
986: return result;
1.242 paf 987: }
988:
1.295.2.16 paf 989: Request::Execute_nonvirtual_method_result
990: Request::execute_nonvirtual_method(VStateless_class& aclass,
1.295.2.27.2. (paf 991:): const String& method_name, VString* optional_param,
992:): bool do_return_string) {
1.295.2.16 paf 993: Execute_nonvirtual_method_result result;
994: result.method=aclass.get_method(method_name);
995: if(result.method)
1.295.2.27.2. (paf 996:): result.string=execute_method(aclass, *result.method, optional_param,
1.295.2.16 paf 997: do_return_string);
998: return result;
1.99 paf 999: }
1000:
1.295.2.27.2. (paf 1001:): const String* Request::execute_virtual_method(Value& aself,
1002:): const String& method_name) {
1003:): if(Value* value=aself.get_element(method_name, aself, false))
1004:): if(Junction* junction=value->get_junction())
1.295.2.7 paf 1005: if(const Method *method=junction->method)
1.295.2.27.2. (paf 1006:): return execute_method(aself, *method, 0/*no params*/, true);
1.188 parser 1007:
1.295.2.27.2. (paf 1008:): return 0;
1.176 parser 1009: }
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