Annotation of parser3/src/main/execute.C, revision 1.295.2.27.2.16
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. 6(paf 8:3): static const char* IDENT_EXECUTE_C="$Date: 2003/04/02 16:05:20 $";
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
27:3): #define LATER_STACK_TRACE
1.157 parser 28:
29: #ifdef DEBUG_EXECUTE
1.1 paf 30: char *opcode_name[]={
1.49 paf 31: // literals
1.109 paf 32: "VALUE", "CURLY_CODE__STORE_PARAM", "EXPR_CODE__STORE_PARAM",
1.209 paf 33: "NESTED_CODE",
1.49 paf 34:
35: // actions
1.187 parser 36: "WITH_ROOT", "WITH_SELF", "WITH_READ", "WITH_WRITE",
1.66 paf 37: "GET_CLASS",
1.182 parser 38: "CONSTRUCT_VALUE", "CONSTRUCT_EXPR", "CURLY_CODE__CONSTRUCT",
1.108 paf 39: "WRITE_VALUE", "WRITE_EXPR_RESULT", "STRING__WRITE",
1.284 paf 40: "GET_ELEMENT_OR_OPERATOR", "GET_ELEMENT", "GET_ELEMENT__WRITE",
1.232 paf 41: "OBJECT_POOL", "STRING_POOL",
1.1 paf 42: "STORE_PARAM",
1.232 paf 43: "PREPARE_TO_CONSTRUCT_OBJECT", "PREPARE_TO_EXPRESSION",
44: "CALL", "CALL__WRITE",
1.49 paf 45:
46: // expression ops: unary
1.148 paf 47: "NEG", "INV", "NOT", "DEF", "IN", "FEXISTS", "DEXISTS",
1.49 paf 48: // expression ops: binary
1.201 paf 49: "SUB", "ADD", "MUL", "DIV", "MOD", "INTDIV",
1.275 paf 50: "BIN_SL", "BIN_SR",
1.56 paf 51: "BIN_AND", "BIN_OR", "BIN_XOR",
52: "LOG_AND", "LOG_OR", "LOG_XOR",
1.49 paf 53: "NUM_LT", "NUM_GT", "NUM_LE", "NUM_GE", "NUM_EQ", "NUM_NE",
1.103 paf 54: "STR_LT", "STR_GT", "STR_LE", "STR_GE", "STR_EQ", "STR_NE",
55: "IS"
1.1 paf 56: };
57:
1.295.2.11 paf 58: void va_debug_printf(SAPI_Info& sapi_info, const char* fmt,va_list args) {
1.127 paf 59: char buf[MAX_STRING];
60: vsnprintf(buf, MAX_STRING, fmt, args);
1.295.2.11 paf 61: SAPI::log(sapi_info, "%s", buf);
1.107 paf 62: }
63:
1.295.2.11 paf 64: void debug_printf(SAPI_Info& sapi_info, const char* fmt, ...) {
1.107 paf 65: va_list args;
1.295.2.11 paf 66: va_start(args, fmt);
67: va_debug_printf(sapi_info, fmt, args);
1.107 paf 68: va_end(args);
1.105 paf 69: }
70:
1.295.2.27.2. (paf 71:): void debug_dump(SAPI_Info& sapi_info, int level, ArrayOperation& ops) {
1.295.2.11 paf 72: Array_iterator<Operation> i(ops);
1.190 parser 73: while(i.has_next()) {
1.295.2.27.2. 5(paf 74:3): OPCODE opinfo.code()=i.next().code();
1.1 paf 75:
1.295.2.27.2. 5(paf 76:3): if(opinfo.code()==OP_VALUE || opinfo.code()==OP_STRING__WRITE) {
3(paf 77:3): Value& value=*i.next().value;
1.295.2.11 paf 78: debug_printf(sapi_info,
1.133 paf 79: "%*s%s"
80: " \"%s\" %s",
1.295.2.27.2. 5(paf 81:3): level*4, "", opcode_name[opinfo.code()],
2(paf 82:3): value.get_string()->cstr(), value.type());
1.133 paf 83: continue;
1.15 paf 84: }
1.295.2.27.2. 5(paf 85:3): debug_printf(sapi_info, "%*s%s", level*4, "", opcode_name[opinfo.code()]);
1.1 paf 86:
1.295.2.27.2. 5(paf 87:3): switch(opinfo.code()) {
1.184 parser 88: case OP_CURLY_CODE__STORE_PARAM:
89: case OP_EXPR_CODE__STORE_PARAM:
90: case OP_CURLY_CODE__CONSTRUCT:
1.209 paf 91: case OP_NESTED_CODE:
1.226 paf 92: case OP_OBJECT_POOL:
93: case OP_STRING_POOL:
1.237 paf 94: case OP_CALL:
1.295.2.12 paf 95: case OP_CALL__WRITE:
1.295.2.27.2. (paf 96:): if(ArrayOperation* local_ops=i.next().ops)
97:): debug_dump(sapi_info, level+1, *local_ops);
1.1 paf 98: }
99: }
100: }
1.157 parser 101: #endif
1.1 paf 102:
1.295.2.3 paf 103: // Request
1.159 parser 104:
1.295.2.6 paf 105: void Request::execute(ArrayOperation& ops) {
1.295.2.27.2. 1(paf 106:3): register Stack<StackItem>& stack=this->stack; // helps a lot on MSVC: 'esi'
107:3):
6(paf 108:3): const String* debug_name=0; Operation::Info debug_info; //bool is_debug_junction=false;
5(paf 109:3): try{
1.157 parser 110: #ifdef DEBUG_EXECUTE
1.295.2.11 paf 111: debug_printf(sapi_info, "source----------------------------\n");
1.295.2.27.2. (paf 112:): debug_dump(sapi_info, 0, ops);
1.295.2.11 paf 113: debug_printf(sapi_info, "execution-------------------------\n");
1.157 parser 114: #endif
1.295.2.27.2. 2(paf 115:3): for(Array_iterator<Operation> i(ops); i.has_next(); ) {
1.295.2.26 paf 116: if(get_interrupted()) {
117: set_interrupted(false);
1.293 paf 118: throw Exception("parser.interrupted",
1.295.2.27.2. (paf 119:): 0,
1.293 paf 120: "execution stopped");
1.295.2.26 paf 121: }
1.295.2.27.2. 5(paf 122:3): Operation::Info opinfo=i.next().info;
123:3):
1.157 parser 124: #ifdef DEBUG_EXECUTE
1.295.2.27.2. 5(paf 125:3): debug_printf(sapi_info, "%d:%s", stack.top_index()+1, opcode_name[opinfo.code()]);
1.157 parser 126: #endif
1.11 paf 127:
1.295.2.27.2. 5(paf 128:3): switch(opinfo.code()) {
1.51 paf 129: // param in next instruction
1.52 paf 130: case OP_VALUE:
1.32 paf 131: {
1.295.2.27.2. 5(paf 132:3): debug_info=opinfo;
2(paf 133:3): Value& value=*i.next().value;
1.157 parser 134: #ifdef DEBUG_EXECUTE
1.295.2.27.2. 2(paf 135:3): debug_printf(sapi_info, " \"%s\" %s", value.get_string()->cstr(), value.type());
1.157 parser 136: #endif
1.295.2.6 paf 137: stack.push(value);
1.32 paf 138: break;
139: }
1.66 paf 140: case OP_GET_CLASS:
1.38 paf 141: {
1.130 paf 142: // maybe they do ^class:method[] call, remember the fact
1.215 paf 143: wcontext->set_somebody_entered_some_class();
1.98 paf 144:
1.295.2.27.2. 2(paf 145:3): const String& name=stack.pop().string();
146:3): Value* value=classes().get(name);
1.120 paf 147: if(!value)
1.223 paf 148: throw Exception("parser.runtime",
1.295.2.27.2. 2(paf 149:3): &name,
1.143 paf 150: "class is undefined");
1.66 paf 151:
1.295.2.27.2. 2(paf 152:3): stack.push(*value);
1.38 paf 153: break;
154: }
1.32 paf 155:
1.51 paf 156: // OP_WITH
1.187 parser 157: case OP_WITH_ROOT:
158: {
1.295.2.27.2. 2(paf 159:3): stack.push(*method_frame);
1.187 parser 160: break;
161: }
1.37 paf 162: case OP_WITH_SELF:
163: {
1.295.2.27.2. 2(paf 164:3): stack.push(get_self());
1.37 paf 165: break;
166: }
1.15 paf 167: case OP_WITH_READ:
168: {
1.295.2.27.2. 2(paf 169:3): stack.push(*rcontext);
1.20 paf 170: break;
171: }
1.37 paf 172: case OP_WITH_WRITE:
1.20 paf 173: {
1.287 paf 174: if(wcontext==method_frame)
175: throw Exception("parser.runtime",
1.295.2.27.2. (paf 176:): 0,
1.287 paf 177: "$.name outside of $name[...]");
178:
1.295.2.27.2. 2(paf 179:3): stack.push(*wcontext);
1.20 paf 180: break;
181: }
1.37 paf 182:
1.51 paf 183: // OTHER ACTIONS BUT WITHs
1.80 paf 184: case OP_CONSTRUCT_VALUE:
1.20 paf 185: {
1.295.2.27.2. 2(paf 186:3): Value& value=stack.pop().value();
5(paf 187:3): const String& name=stack.pop().string(); debug_name=&name;
2(paf 188:3): Value& ncontext=stack.pop().value();
189:3): ncontext.put_element(name, &value, false);
1.213 paf 190: break;
191: }
1.80 paf 192: case OP_CONSTRUCT_EXPR:
193: {
1.219 paf 194: // see OP_PREPARE_TO_EXPRESSION
195: wcontext->set_in_expression(false);
196:
1.295.2.27.2. 2(paf 197:3): Value& value=stack.pop().value();
5(paf 198:3): const String& name=stack.pop().string(); debug_name=&name;
2(paf 199:3): Value& ncontext=stack.pop().value();
200:3): ncontext.put_element(name, &value.as_expr_result(), false);
1.80 paf 201: break;
202: }
1.182 parser 203: case OP_CURLY_CODE__CONSTRUCT:
204: {
1.295.2.27.2. 2(paf 205:3): ArrayOperation& local_ops=*i.next().ops;
1.182 parser 206: #ifdef DEBUG_EXECUTE
1.295.2.27.2. 2(paf 207:3): debug_printf(sapi_info, " (%d)\n", local_ops.count());
3(paf 208:3): debug_dump(sapi_info, 1, local_ops);
1.182 parser 209: #endif
1.295.2.27.2. 2(paf 210:3): Value& value=*new VJunction(new Junction(
1.295.2.7 paf 211: get_self(), 0,
1.257 paf 212: method_frame,
1.240 paf 213: rcontext,
214: wcontext,
1.295.2.27.2. 2(paf 215:3): &local_ops));
1.238 paf 216:
1.295.2.27.2. 5(paf 217:3): const String& name=stack.pop().string(); debug_name=&name;
2(paf 218:3): Value& ncontext=stack.pop().value();
219:3): ncontext.put_element(name, &value, false);
1.182 parser 220: break;
221: }
1.209 paf 222: case OP_NESTED_CODE:
223: {
1.295.2.27.2. 2(paf 224:3): ArrayOperation& local_ops=*i.next().ops;
1.209 paf 225: #ifdef DEBUG_EXECUTE
1.295.2.27.2. 2(paf 226:3): debug_printf(sapi_info, " (%d)\n", local_ops.count());
3(paf 227:3): debug_dump(sapi_info, 1, local_ops);
1.209 paf 228: #endif
1.295.2.6 paf 229: stack.push(local_ops);
1.209 paf 230: break;
231: }
1.108 paf 232: case OP_WRITE_VALUE:
1.13 paf 233: {
1.295.2.27.2. 2(paf 234:3): Value& value=stack.pop().value();
235:3): write_assign_lang(value);
1.86 paf 236: break;
237: }
1.108 paf 238: case OP_WRITE_EXPR_RESULT:
239: {
1.295.2.27.2. 2(paf 240:3): Value& value=stack.pop().value();
241:3): write_no_lang(value.as_expr_result());
1.230 paf 242:
243: // must be after write(result) and
1.219 paf 244: // see OP_PREPARE_TO_EXPRESSION
245: wcontext->set_in_expression(false);
1.108 paf 246: break;
247: }
1.86 paf 248: case OP_STRING__WRITE:
249: {
1.295.2.27.2. 2(paf 250:3): Value* value=i.next().value;
1.157 parser 251: #ifdef DEBUG_EXECUTE
1.295.2.27.2. (paf 252:): debug_printf(sapi_info, " \"%s\"", value->get_string()->cstr());
1.157 parser 253: #endif
1.295.2.27.2. (paf 254:): write_no_lang(*value->get_string());
1.13 paf 255: break;
1.14 paf 256: }
1.13 paf 257:
1.215 paf 258: case OP_GET_ELEMENT_OR_OPERATOR:
259: {
1.295.2.27.2. 5(paf 260:3): const String& name=stack.pop().string(); debug_name=&name;
261:3): Value& ncontext=stack.pop().value();
262:3): Value& value=get_element(ncontext, name, true);
1.295.2.6 paf 263: stack.push(value);
1.215 paf 264: break;
265: }
1.15 paf 266: case OP_GET_ELEMENT:
1.11 paf 267: {
1.295.2.27.2. 5(paf 268:3): const String& name=stack.pop().string(); debug_name=&name;
269:3): Value& ncontext=stack.pop().value();
270:3): Value& value=get_element(ncontext, name, false);
1.295.2.6 paf 271: stack.push(value);
1.17 paf 272: break;
273: }
274:
1.18 paf 275: case OP_GET_ELEMENT__WRITE:
1.17 paf 276: {
1.295.2.27.2. 5(paf 277:3): const String& name=stack.pop().string(); debug_name=&name;
278:3): Value& ncontext=stack.pop().value();
279:3): Value& value=get_element(ncontext, name, false);
2(paf 280:3): write_assign_lang(value);
1.17 paf 281: break;
282: }
283:
1.32 paf 284:
1.226 paf 285: case OP_OBJECT_POOL:
1.17 paf 286: {
1.295.2.27.2. 2(paf 287:3): ArrayOperation& local_ops=*i.next().ops;
1.226 paf 288:
1.257 paf 289: WContext *saved_wcontext=wcontext;
1.295.2.27.2. (paf 290:): String::Language saved_lang=flang;
291:): flang=String::L_PASS_APPENDED;
292:): WWrapper local(0/*empty*/, wcontext);
1.226 paf 293: wcontext=&local;
294:
1.295.2.27.2. 2(paf 295:3): execute(local_ops);
1.226 paf 296:
1.295.2.27.2. 2(paf 297:3): stack.push(wcontext->result().as_value());
1.257 paf 298: flang=saved_lang;
299: wcontext=saved_wcontext;
1.13 paf 300: break;
1.15 paf 301: }
1.13 paf 302:
1.226 paf 303: case OP_STRING_POOL:
1.49 paf 304: {
1.295.2.27.2. 2(paf 305:3): ArrayOperation& local_ops=*i.next().ops;
1.226 paf 306:
1.257 paf 307: WContext *saved_wcontext=wcontext;
1.295.2.27.2. (paf 308:): WWrapper local(0 /*empty*/, wcontext);
1.226 paf 309: wcontext=&local;
310:
1.295.2.27.2. 2(paf 311:3): execute(local_ops);
1.226 paf 312:
1.295.2.27.2. 2(paf 313:3): Value* value;
1.49 paf 314: // from "$a $b" part of expression taking only string value,
315: // ignoring any other content of wcontext
1.295.2.27.2. (paf 316:): if(const String* string=wcontext->get_string())
317:): value=new VString(*string);
1.80 paf 318: else
1.295.2.27.2. (paf 319:): value=new VVoid;
2(paf 320:3): stack.push(*value);
1.295.2.7 paf 321:
1.257 paf 322: wcontext=saved_wcontext;
1.49 paf 323: break;
324: }
325:
1.51 paf 326: // CALL
1.237 paf 327: case OP_STORE_PARAM:
1.28 paf 328: {
1.295.2.27.2. 2(paf 329:3): Value& value=stack.pop().value();
330:3): VMethodFrame& frame=stack.top_value().method_frame();
1.295.2.7 paf 331: // 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 332:3): frame.store_param(value);
1.28 paf 333: break;
334: }
1.237 paf 335: case OP_CURLY_CODE__STORE_PARAM:
336: case OP_EXPR_CODE__STORE_PARAM:
1.28 paf 337: {
1.237 paf 338: // code
1.295.2.27.2. 2(paf 339:3): ArrayOperation& local_ops=*i.next().ops;
340:3): VMethodFrame& frame=stack.top_value().method_frame();
1.237 paf 341: #ifdef DEBUG_EXECUTE
1.295.2.27.2. 2(paf 342:3): debug_printf(sapi_info, " (%d)\n", local_ops.count());
3(paf 343:3): debug_dump(sapi_info, 1, local_ops);
1.237 paf 344: #endif
345: // when they evaluate expression parameter,
346: // the object expression result
347: // does not need to be written into calling frame
348: // it must go into any expressions using that parameter
349: // hence, we zero junction.wcontext here, and later
350: // in .process we would test that field
351: // in decision "which wwrapper to use"
1.295.2.27.2. 2(paf 352:3): Value& value=*new VJunction(new Junction(
1.295.2.7 paf 353: get_self(), 0,
1.257 paf 354: method_frame,
1.237 paf 355: rcontext,
1.295.2.27.2. 5(paf 356:3): opinfo.code()==OP_EXPR_CODE__STORE_PARAM?0:wcontext,
2(paf 357:3): &local_ops));
1.237 paf 358: // store param
359: // 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 360:3): frame.store_param(value);
1.29 paf 361: break;
362: }
363:
1.186 parser 364: case OP_PREPARE_TO_CONSTRUCT_OBJECT:
365: {
1.200 paf 366: wcontext->set_constructing(true);
1.186 parser 367: break;
368: }
1.219 paf 369:
370: case OP_PREPARE_TO_EXPRESSION:
371: {
372: wcontext->set_in_expression(true);
373: break;
374: }
375:
1.186 parser 376: case OP_CALL:
1.232 paf 377: case OP_CALL__WRITE:
1.29 paf 378: {
1.295.2.27.2. 6(paf 379:3): //is_debug_junction=true;
2(paf 380:3): ArrayOperation* local_ops=i.next().ops;
1.157 parser 381: #ifdef DEBUG_EXECUTE
1.295.2.27.2. 3(paf 382:3): debug_printf(sapi_info, " (%d)\n", local_ops?local_ops->count():0);
1.295.2.13 paf 383: if(local_ops)
1.295.2.27.2. (paf 384:): debug_dump(sapi_info, 1, *local_ops);
1.237 paf 385:
1.295.2.11 paf 386: debug_printf(sapi_info, "->\n");
1.157 parser 387: #endif
1.295.2.27.2. 2(paf 388:3): Value& value=stack.pop().value();
1.237 paf 389:
1.295.2.27.2. 2(paf 390:3): Junction* junction=value.get_junction();
1.237 paf 391: if(!junction)
392: throw Exception("parser.runtime",
1.295.2.27.2. (paf 393:): 0,
1.237 paf 394: "(%s) not a method or junction, can not call it",
1.295.2.27.2. 2(paf 395:3): value.type());
1.282 paf 396: /* no check needed, code compiled the way that that's impossible
1.276 paf 397: // check:
398: // that this is method-junction, not a code-junction
1.278 paf 399: // [disabling these contstructions:]
400: // $junction{code}
401: // ^junction[]
1.276 paf 402: if(!junction->method)
403: throw Exception("parser.runtime",
1.295.2.27.2. (paf 404:):
1.276 paf 405: "(%s) is code junction, can not call it",
1.295.2.27.2. 2(paf 406:3): value.type());
1.282 paf 407: */
1.237 paf 408:
1.295.2.27.2. (paf 409:): VMethodFrame frame(*junction, method_frame/*caller*/);
1.237 paf 410: if(local_ops){ // store param code goes here
1.295.2.27.2. 2(paf 411:3): stack.push(frame); // argument for *STORE_PARAM ops
1.237 paf 412: execute(*local_ops);
1.295.2.27.2. 2(paf 413:3): stack.pop().value();
1.237 paf 414: }
415: frame.fill_unspecified_params();
1.257 paf 416: VMethodFrame *saved_method_frame=method_frame;
1.295.2.6 paf 417: Value* saved_rcontext=rcontext;
1.257 paf 418: WContext *saved_wcontext=wcontext;
1.45 paf 419:
1.295.2.27.2. (paf 420:): VStateless_class& called_class=*frame.junction.self.get_class();
421:): Value* new_self=&get_self();
1.200 paf 422: if(wcontext->get_constructing()) {
423: wcontext->set_constructing(false);
1.237 paf 424: if(frame.junction.method->call_type!=Method::CT_STATIC) {
1.138 paf 425: // this is a constructor call
1.185 parser 426:
1.295.2.27.2. (paf 427:): if(Value* value=called_class.create_new_value()) {
1.204 paf 428: // some stateless_class creatable derivates
1.285 paf 429: new_self=value;
1.204 paf 430: } else
1.223 paf 431: throw Exception("parser.runtime",
1.295.2.27.2. (paf 432:): 0, //&frame.name(),
1.204 paf 433: "is not a constructor, system class '%s' can be constructed only implicitly",
1.295.2.27.2. (paf 434:): called_class.name().cstr());
1.204 paf 435:
1.295.2.27.2. (paf 436:): frame.write(*new_self,
437:): String::L_CLEAN // not used, always an object, not string
1.83 paf 438: );
1.185 parser 439: } else
1.223 paf 440: throw Exception("parser.runtime",
1.295.2.27.2. (paf 441:): 0, //&frame.name(),
1.185 parser 442: "method is static and can not be used as constructor");
1.249 paf 443: } else
1.295.2.27.2. (paf 444:): new_self=&frame.junction.self;
1.75 paf 445:
1.295.2.27.2. (paf 446:): frame.set_self(*new_self);
1.219 paf 447:
448: // see OP_PREPARE_TO_EXPRESSION
1.237 paf 449: frame.set_in_expression(wcontext->get_in_expression());
1.219 paf 450:
1.237 paf 451: rcontext=wcontext=&frame;
1.47 paf 452: {
1.237 paf 453: const Method& method=*frame.junction.method;
1.134 paf 454: Method::Call_type call_type=
1.295.2.27.2. (paf 455:): &called_class==new_self ? Method::CT_STATIC : Method::CT_DYNAMIC;
1.134 paf 456: if(
457: method.call_type==Method::CT_ANY ||
1.197 parser 458: method.call_type==call_type) { // allowed call type?
1.295.2.27.2. 5(paf 459:3): method_frame=&frame;
460:3): if(method.native_code) { // native code?
461:3): method.check_actual_numbered_params(
462:3): frame.junction.self,
463:3): /*frame.name(), */frame.numbered_params());
464:3): method.native_code(
465:3): *this,
466:3): /*frame.name(), */frame.numbered_params()); // execute it
467:3): } else // parser code, execute it
468:3): recoursion_checked_execute(/*frame.name(), */*method.parser_code);
1.197 parser 469: } else
1.223 paf 470: throw Exception("parser.runtime",
1.295.2.27.2. (paf 471:): 0, //&frame.name(),
1.134 paf 472: "is not allowed to be called %s",
473: call_type==Method::CT_STATIC?"statically":"dynamically");
474:
1.47 paf 475: }
1.232 paf 476: StringOrValue result=wcontext->result();
1.45 paf 477:
1.257 paf 478: wcontext=saved_wcontext;
479: rcontext=saved_rcontext;
480: method_frame=saved_method_frame;
1.213 paf 481:
1.295.2.27.2. 5(paf 482:3): if(opinfo.code()==OP_CALL__WRITE) {
(paf 483:): write_assign_lang(result);
1.232 paf 484: } else { // OP_CALL
1.295.2.27.2. 2(paf 485:3): stack.push(result.as_value());
1.232 paf 486: }
487:
1.157 parser 488: #ifdef DEBUG_EXECUTE
1.295.2.11 paf 489: debug_printf(sapi_info, "<-returned");
1.157 parser 490: #endif
1.295.2.27.2. 6(paf 491:3): //is_debug_junction=false;
1.49 paf 492: break;
493: }
494:
1.55 paf 495: // expression ops: unary
496: case OP_NEG:
497: {
1.295.2.27.2. 2(paf 498:3): Value& a=stack.pop().value();
499:3): Value& value=*new VDouble(-a.as_double());
1.295.2.6 paf 500: stack.push(value);
1.55 paf 501: break;
502: }
503: case OP_INV:
504: {
1.295.2.27.2. 2(paf 505:3): Value& a=stack.pop().value();
506:3): Value& value=*new VDouble(~a.as_int());
1.295.2.6 paf 507: stack.push(value);
1.55 paf 508: break;
509: }
510: case OP_NOT:
511: {
1.295.2.27.2. 2(paf 512:3): Value& a=stack.pop().value();
513:3): Value& value=*new VBool(!a.as_bool());
1.295.2.6 paf 514: stack.push(value);
1.55 paf 515: break;
516: }
1.62 paf 517: case OP_DEF:
518: {
1.295.2.27.2. 2(paf 519:3): Value& a=stack.pop().value();
520:3): Value& value=*new VBool(a.is_defined());
1.295.2.6 paf 521: stack.push(value);
1.62 paf 522: break;
523: }
524: case OP_IN:
525: {
1.295.2.27.2. 2(paf 526:3): Value& a=stack.pop().value();
527:3): const String& path=a.as_string();
528:3): Value& value=*new VBool(request_info.uri && *request_info.uri && path.this_starts(request_info.uri));
1.295.2.6 paf 529: stack.push(value);
1.62 paf 530: break;
531: }
532: case OP_FEXISTS:
533: {
1.295.2.27.2. 2(paf 534:3): Value& a=stack.pop().value();
535:3): Value& value=*new VBool(file_readable(absolute(a.as_string())));
1.295.2.6 paf 536: stack.push(value);
1.148 paf 537: break;
538: }
539: case OP_DEXISTS:
540: {
1.295.2.27.2. 2(paf 541:3): Value& a=stack.pop().value();
542:3): Value& value=*new VBool(dir_readable(absolute(a.as_string())));
1.295.2.6 paf 543: stack.push(value);
1.62 paf 544: break;
545: }
1.55 paf 546:
547: // expression ops: binary
548: case OP_SUB:
1.53 paf 549: {
1.295.2.27.2. 2(paf 550:3): Value& b=stack.pop().value(); Value& a=stack.pop().value();
551:3): Value& value=*new VDouble(a.as_double() - b.as_double());
1.295.2.6 paf 552: stack.push(value);
1.53 paf 553: break;
554: }
1.55 paf 555: case OP_ADD:
1.53 paf 556: {
1.295.2.27.2. 2(paf 557:3): Value& b=stack.pop().value(); Value& a=stack.pop().value();
558:3): Value& value=*new VDouble(a.as_double() + b.as_double());
1.295.2.6 paf 559: stack.push(value);
1.53 paf 560: break;
561: }
1.49 paf 562: case OP_MUL:
563: {
1.295.2.27.2. 2(paf 564:3): Value& b=stack.pop().value(); Value& a=stack.pop().value();
565:3): Value& value=*new VDouble(a.as_double() * b.as_double());
1.295.2.6 paf 566: stack.push(value);
1.53 paf 567: break;
568: }
569: case OP_DIV:
570: {
1.295.2.27.2. 2(paf 571:3): Value& b=stack.pop().value(); Value& a=stack.pop().value();
1.170 parser 572:
1.295.2.27.2. 2(paf 573:3): double a_double=a.as_double();
574:3): double b_double=b.as_double();
1.170 parser 575:
1.171 parser 576: if(b_double == 0) {
1.295.2.27.2. 2(paf 577:3): //const String* problem_source=b.as_string();
1.223 paf 578: throw Exception("number.zerodivision",
1.295.2.27.2. (paf 579:): 0, //problem_source,
1.170 parser 580: "Division by zero");
1.171 parser 581: }
1.170 parser 582:
1.295.2.27.2. 2(paf 583:3): Value& value=*new VDouble(a_double / b_double);
1.295.2.6 paf 584: stack.push(value);
1.54 paf 585: break;
586: }
1.55 paf 587: case OP_MOD:
588: {
1.295.2.27.2. 2(paf 589:3): Value& b=stack.pop().value(); Value& a=stack.pop().value();
1.170 parser 590:
1.295.2.27.2. 2(paf 591:3): double a_double=a.as_double();
592:3): double b_double=b.as_double();
1.170 parser 593:
1.173 parser 594: if(b_double == 0) {
1.295.2.27.2. 2(paf 595:3): //const String* problem_source=b.as_string();
1.223 paf 596: throw Exception("number.zerodivision",
1.295.2.27.2. (paf 597:): 0, //problem_source,
1.170 parser 598: "Modulus by zero");
1.171 parser 599: }
1.170 parser 600:
1.295.2.27.2. 2(paf 601:3): Value& value=*new VDouble(fmod(a_double, b_double));
1.295.2.6 paf 602: stack.push(value);
1.201 paf 603: break;
604: }
605: case OP_INTDIV:
606: {
1.295.2.27.2. 2(paf 607:3): Value& b=stack.pop().value(); Value& a=stack.pop().value();
1.201 paf 608:
1.295.2.27.2. 2(paf 609:3): int a_int=a.as_int();
610:3): int b_int=b.as_int();
1.201 paf 611:
612: if(b_int == 0) {
1.295.2.27.2. 2(paf 613:3): //const String* problem_source=b.as_string();
1.223 paf 614: throw Exception("number.zerodivision",
1.295.2.27.2. (paf 615:): 0, //problem_source,
1.201 paf 616: "Division by zero");
617: }
618:
1.295.2.27.2. 2(paf 619:3): Value& value=*new VInt(a_int / b_int);
1.295.2.6 paf 620: stack.push(value);
1.55 paf 621: break;
622: }
1.274 paf 623: case OP_BIN_SL:
624: {
1.295.2.27.2. 2(paf 625:3): Value& b=stack.pop().value(); Value& a=stack.pop().value();
626:3): Value& value=*new VInt(
627:3): a.as_int() <<
628:3): b.as_int());
1.295.2.6 paf 629: stack.push(value);
1.274 paf 630: break;
631: }
632: case OP_BIN_SR:
633: {
1.295.2.27.2. 2(paf 634:3): Value& b=stack.pop().value(); Value& a=stack.pop().value();
635:3): Value& value=*new VInt(
636:3): a.as_int() >>
637:3): b.as_int());
1.295.2.6 paf 638: stack.push(value);
1.274 paf 639: break;
640: }
1.55 paf 641: case OP_BIN_AND:
1.54 paf 642: {
1.295.2.27.2. 2(paf 643:3): Value& b=stack.pop().value(); Value& a=stack.pop().value();
644:3): Value& value=*new VInt(
645:3): a.as_int() &
646:3): b.as_int());
1.295.2.6 paf 647: stack.push(value);
1.54 paf 648: break;
649: }
1.55 paf 650: case OP_BIN_OR:
1.54 paf 651: {
1.295.2.27.2. 2(paf 652:3): Value& b=stack.pop().value(); Value& a=stack.pop().value();
653:3): Value& value=*new VInt(
654:3): a.as_int() |
655:3): b.as_int());
1.295.2.6 paf 656: stack.push(value);
1.55 paf 657: break;
658: }
1.56 paf 659: case OP_BIN_XOR:
660: {
1.295.2.27.2. 2(paf 661:3): Value& b=stack.pop().value(); Value& a=stack.pop().value();
662:3): Value& value=*new VInt(
663:3): a.as_int() ^
664:3): b.as_int());
1.295.2.6 paf 665: stack.push(value);
1.56 paf 666: break;
667: }
1.55 paf 668: case OP_LOG_AND:
669: {
1.295.2.27.2. 2(paf 670:3): ArrayOperation& local_ops=stack.pop().ops(); Value& a=stack.pop().value();
1.263 paf 671: bool result;
1.295.2.27.2. 2(paf 672:3): if(a.as_bool()) {
673:3): execute(local_ops);
674:3): Value& b=stack.pop().value();
675:3): result=b.as_bool();
1.209 paf 676: } else
1.263 paf 677: result=false;
1.295.2.27.2. 2(paf 678:3): Value& value=*new VBool(result);
1.295.2.6 paf 679: stack.push(value);
1.55 paf 680: break;
681: }
682: case OP_LOG_OR:
683: {
1.295.2.27.2. 2(paf 684:3): ArrayOperation& local_ops=stack.pop().ops(); Value& a=stack.pop().value();
1.263 paf 685: bool result;
1.295.2.27.2. 2(paf 686:3): if(a.as_bool())
1.263 paf 687: result=true;
1.209 paf 688: else {
1.295.2.27.2. 2(paf 689:3): execute(local_ops);
690:3): Value& b=stack.pop().value();
691:3): result=b.as_bool();
1.209 paf 692: }
1.295.2.27.2. 2(paf 693:3): Value& value=*new VBool(result);
1.295.2.6 paf 694: stack.push(value);
1.56 paf 695: break;
696: }
697: case OP_LOG_XOR:
698: {
1.295.2.27.2. 2(paf 699:3): Value& b=stack.pop().value(); Value& a=stack.pop().value();
700:3): Value& value=*new VBool(a.as_bool() ^ b.as_bool());
1.295.2.6 paf 701: stack.push(value);
1.55 paf 702: break;
703: }
704: case OP_NUM_LT:
705: {
1.295.2.27.2. 2(paf 706:3): Value& b=stack.pop().value(); Value& a=stack.pop().value();
707:3): double result=a.as_double() - b.as_double();
708:3): Value& value=*new VBool(result < 0.0);
1.295.2.6 paf 709: stack.push(value);
1.55 paf 710: break;
711: }
712: case OP_NUM_GT:
713: {
1.295.2.27.2. 2(paf 714:3): Value& b=stack.pop().value(); Value& a=stack.pop().value();
715:3): double result=a.as_double() - b.as_double();
716:3): Value& value=*new VBool(result > 0.0);
1.295.2.6 paf 717: stack.push(value);
1.55 paf 718: break;
719: }
720: case OP_NUM_LE:
721: {
1.295.2.27.2. 2(paf 722:3): Value& b=stack.pop().value(); Value& a=stack.pop().value();
723:3): double result=a.as_double() - b.as_double();
724:3): Value& value=*new VBool(result <= 0.0);
1.295.2.6 paf 725: stack.push(value);
1.55 paf 726: break;
727: }
728: case OP_NUM_GE:
729: {
1.295.2.27.2. 2(paf 730:3): Value& b=stack.pop().value(); Value& a=stack.pop().value();
731:3): double result=a.as_double() - b.as_double();
732:3): Value& value=*new VBool(result >= 0.0);
1.295.2.6 paf 733: stack.push(value);
1.55 paf 734: break;
735: }
736: case OP_NUM_EQ:
737: {
1.295.2.27.2. 2(paf 738:3): Value& b=stack.pop().value(); Value& a=stack.pop().value();
739:3): double result=a.as_double() - b.as_double();
740:3): Value& value=*new VBool(result == 0.0);
1.295.2.6 paf 741: stack.push(value);
1.55 paf 742: break;
743: }
744: case OP_NUM_NE:
745: {
1.295.2.27.2. 2(paf 746:3): Value& b=stack.pop().value(); Value& a=stack.pop().value();
747:3): double result=a.as_double() - b.as_double();
748:3): Value& value=*new VBool(result != 0.0);
1.295.2.6 paf 749: stack.push(value);
1.54 paf 750: break;
751: }
1.58 paf 752: case OP_STR_LT:
753: {
1.295.2.27.2. 2(paf 754:3): Value& b=stack.pop().value(); Value& a=stack.pop().value();
755:3): Value& value=*new VBool(a.as_string() < b.as_string());
1.295.2.6 paf 756: stack.push(value);
1.58 paf 757: break;
758: }
759: case OP_STR_GT:
760: {
1.295.2.27.2. 2(paf 761:3): Value& b=stack.pop().value(); Value& a=stack.pop().value();
762:3): Value& value=*new VBool(a.as_string() > b.as_string());
1.295.2.6 paf 763: stack.push(value);
1.58 paf 764: break;
765: }
1.55 paf 766: case OP_STR_LE:
1.58 paf 767: {
1.295.2.27.2. 2(paf 768:3): Value& b=stack.pop().value(); Value& a=stack.pop().value();
769:3): Value& value=*new VBool(a.as_string() <= b.as_string());
1.295.2.6 paf 770: stack.push(value);
1.58 paf 771: break;
772: }
1.55 paf 773: case OP_STR_GE:
1.54 paf 774: {
1.295.2.27.2. 2(paf 775:3): Value& b=stack.pop().value(); Value& a=stack.pop().value();
776:3): Value& value=*new VBool(a.as_string() >= b.as_string());
1.295.2.6 paf 777: stack.push(value);
1.58 paf 778: break;
779: }
780: case OP_STR_EQ:
781: {
1.295.2.27.2. 2(paf 782:3): Value& b=stack.pop().value(); Value& a=stack.pop().value();
783:3): Value& value=*new VBool(a.as_string() == b.as_string());
1.295.2.6 paf 784: stack.push(value);
1.58 paf 785: break;
786: }
787: case OP_STR_NE:
788: {
1.295.2.27.2. 2(paf 789:3): Value& b=stack.pop().value(); Value& a=stack.pop().value();
790:3): Value& value=*new VBool(a.as_string() != b.as_string());
1.295.2.6 paf 791: stack.push(value);
1.103 paf 792: break;
793: }
794: case OP_IS:
795: {
1.295.2.27.2. 2(paf 796:3): Value& b=stack.pop().value(); Value& a=stack.pop().value();
797:3): Value& value=*new VBool(a.is(b.as_string().cstr()));
1.295.2.6 paf 798: stack.push(value);
1.28 paf 799: break;
800: }
801:
1.11 paf 802: default:
1.295.2.27.2. (paf 803:): throw Exception(0,
804:): 0,
6(paf 805:3): "invalid opcode %d", opinfo.code());
1.11 paf 806: }
807: }
1.295.2.27.2. 5(paf 808:3): } catch(...) {
809:3): // record it to stack trace
6(paf 810:3): //if(is_debug_junction)
811:3): exception_trace.push(Trace(debug_name, debug_info));
5(paf 812:3): rethrow;
813:3): }
1.1 paf 814: }
1.17 paf 815:
1.292 paf 816: /**
817: @todo cache|prepare junctions
818: @bug ^superbase:method would dynamically call ^base:method if there is any
819: */
1.295.2.27.2. 5(paf 820:3): Value& Request::get_element(Value& ncontext, const String& name, bool can_call_operator) {
(paf 821:): Value* value=0;
1.249 paf 822: if(can_call_operator) {
1.295.2.27.2. (paf 823:): if(Method* method=main_class.get_method(name)) // looking operator of that name FIRST
824:): value=new VJunction(new Junction(
825:): main_class, method, 0,0,0, 0));
1.249 paf 826: }
827: if(!value) {
828: if(!wcontext->get_constructing() // not constructing
829: && wcontext->get_somebody_entered_some_class() ) // ^class:method
1.295.2.27.2. 2(paf 830:3): if(VStateless_class *called_class=ncontext.get_class())
1.249 paf 831: if(VStateless_class *read_class=rcontext->get_class())
832: if(read_class->derived_from(*called_class)) // current derived from called
1.295.2.27.2. (paf 833:): if(Value* base=get_self().base()) { // doing DYNAMIC call
1.295.2.27 paf 834: Temp_derived temp_derived(*base, 0); // temporarily prevent go-back-down virtual calls
1.290 paf 835: value=base->get_element(name, *base, false); // virtual-up lookup starting from parent
1.289 paf 836: goto value_ready;
1.249 paf 837: }
838: }
1.216 paf 839: if(!value)
1.295.2.27.2. 2(paf 840:3): value=ncontext.get_element(name, ncontext, false);
1.291 paf 841:
842: if(value && wcontext->get_constructing())
1.295.2.27.2. (paf 843:): if(Junction* junction=value->get_junction()) {
2(paf 844:3): if(junction->self.get_class()!=&ncontext)
1.291 paf 845: throw Exception("parser.runtime",
1.295.2.27.2. (paf 846:): &name,
1.295.2.20 paf 847: "constructor must be declared in class '%s'",
1.295.2.27.2. 2(paf 848:3): ncontext.get_class()->name_cstr());
1.291 paf 849: }
1.249 paf 850:
1.289 paf 851: value_ready:
1.284 paf 852: if(value)
1.295.2.27.2. (paf 853:): value=&process_to_value(*value); // process possible code-junction
1.284 paf 854: else
1.295.2.27.2. (paf 855:): value=new VVoid;
1.63 paf 856:
1.295.2.27.2. 2(paf 857:3): return *value;
1.34 paf 858: }
1.70 paf 859:
1.162 parser 860: /** @param intercept_string
1.116 paf 861: - true:
862: they want result=string value,
863: possible object result goes to wcontext
864: - false:
865: they want any result[string|object]
866: nothing goes to wcontext.
1.125 paf 867: used in @c (expression) params evaluation
1.224 paf 868:
869: using the fact it's either string_ or value_ result requested to speed up checkes
1.116 paf 870: */
1.295.2.27.2. (paf 871:): StringOrValue Request::process(Value& input_value, bool intercept_string) {
1.228 paf 872: StringOrValue result;
1.295.2.27.2. (paf 873:): Junction* junction=input_value.get_junction();
1.70 paf 874: if(junction && junction->code) { // is it a code-junction?
1.92 paf 875: // process it
1.157 parser 876: #ifdef DEBUG_EXECUTE
1.295.2.11 paf 877: debug_printf(sapi_info, "ja->\n");
1.157 parser 878: #endif
1.238 paf 879:
1.257 paf 880: if(!junction->method_frame)
1.240 paf 881: throw Exception("parser.runtime",
1.295.2.27.2. (paf 882:): 0,
1.240 paf 883: "junction used outside of context");
884:
1.257 paf 885: VMethodFrame *saved_method_frame=method_frame;
1.295.2.6 paf 886: Value* saved_rcontext=rcontext;
1.257 paf 887: WContext *saved_wcontext=wcontext;
1.240 paf 888:
1.257 paf 889: method_frame=junction->method_frame;
1.240 paf 890: rcontext=junction->rcontext;
1.225 paf 891:
1.109 paf 892: // for expression method params
893: // wcontext is set 0
894: // using the fact in decision "which wwrapper to use"
1.240 paf 895: bool using_code_frame=intercept_string && junction->wcontext;
1.109 paf 896: if(using_code_frame) {
1.71 paf 897: // almost plain wwrapper about junction wcontext,
898: // BUT intercepts string writes
1.295.2.27.2. (paf 899:): VCodeFrame local(*junction->wcontext, junction->wcontext);
1.225 paf 900: wcontext=&local;
1.207 paf 901:
1.225 paf 902: // execute it
1.295.2.27.2. (paf 903:): recoursion_checked_execute(/*0/*result_name* /, */ *junction->code);
1.226 paf 904:
1.71 paf 905: // CodeFrame soul:
906: // string writes were intercepted
907: // returning them as the result of getting code-junction
1.295.2.27.2. (paf 908:): result.set_string(*wcontext->get_string());
1.224 paf 909: } else {
1.225 paf 910: // plain wwrapper
1.295.2.27.2. (paf 911:): WWrapper local(0/*empty*/, wcontext);
1.225 paf 912: wcontext=&local;
913:
914: // execute it
1.295.2.27.2. (paf 915:): recoursion_checked_execute(/*0/*result_name* /, */ *junction->code);
1.226 paf 916:
1.228 paf 917: result=wcontext->result();
1.224 paf 918: }
1.70 paf 919:
1.257 paf 920: wcontext=saved_wcontext;
921: rcontext=saved_rcontext;
922: method_frame=saved_method_frame;
1.70 paf 923:
1.157 parser 924: #ifdef DEBUG_EXECUTE
1.295.2.11 paf 925: debug_printf(sapi_info, "<-ja returned");
1.157 parser 926: #endif
1.224 paf 927: } else {
1.228 paf 928: result.set_value(input_value);
1.224 paf 929: }
1.228 paf 930: return result;
1.85 paf 931: }
932:
1.295.2.27.2. (paf 933:): const String& Request::execute_method(VMethodFrame& amethod_frame, const Method& method) {
1.257 paf 934: VMethodFrame *saved_method_frame=method_frame;
1.295.2.6 paf 935: Value* saved_rcontext=rcontext;
1.257 paf 936: WContext *saved_wcontext=wcontext;
1.99 paf 937:
938: // initialize contexts
1.286 paf 939: rcontext=wcontext=method_frame=&amethod_frame;
1.99 paf 940:
941: // execute!
942: execute(*method.parser_code);
943:
944: // result
1.295.2.27.2. (paf 945:): const String& result=wcontext->result().as_string();
1.208 paf 946:
1.257 paf 947: wcontext=saved_wcontext;
948: rcontext=saved_rcontext;
949: method_frame=saved_method_frame;
1.242 paf 950:
951: // return
952: return result;
1.208 paf 953: }
954:
1.295.2.27.2. (paf 955:): const String* Request::execute_method(Value& aself,
956:): const Method& method, VString* optional_param,
1.295.2.7 paf 957: bool do_return_string) {
1.257 paf 958: VMethodFrame *saved_method_frame=method_frame;
1.295.2.6 paf 959: Value* saved_rcontext=rcontext;
1.257 paf 960: WContext *saved_wcontext=wcontext;
1.208 paf 961:
1.295.2.27.2. (paf 962:): Junction local_junction(aself, &method, 0,0,0, 0);
963:): VMethodFrame local_frame(/*method.name, */local_junction, method_frame/*caller*/);
1.242 paf 964: if(optional_param && local_frame.can_store_param()) {
1.295.2.27.2. (paf 965:): local_frame.store_param(*optional_param);
1.242 paf 966: local_frame.fill_unspecified_params();
967: }
1.285 paf 968: local_frame.set_self(aself);
1.257 paf 969: rcontext=wcontext=method_frame=&local_frame;
1.246 paf 970:
971: // prevent non-string writes for better error reporting
1.295.2.7 paf 972: if(do_return_string)
1.295.2.27.2. (paf 973:): wcontext->write(local_frame);
1.208 paf 974:
975: // execute!
976: execute(*method.parser_code);
977:
978: // result
1.295.2.27.2. (paf 979:): const String* result=0;
1.295.2.7 paf 980: if(do_return_string)
1.295.2.27.2. (paf 981:): result=&wcontext->result().as_string();
1.99 paf 982:
1.257 paf 983: wcontext=saved_wcontext;
984: rcontext=saved_rcontext;
985: method_frame=saved_method_frame;
1.295.2.7 paf 986:
987: return result;
1.242 paf 988: }
989:
1.295.2.16 paf 990: Request::Execute_nonvirtual_method_result
991: Request::execute_nonvirtual_method(VStateless_class& aclass,
1.295.2.27.2. (paf 992:): const String& method_name, VString* optional_param,
993:): bool do_return_string) {
1.295.2.16 paf 994: Execute_nonvirtual_method_result result;
995: result.method=aclass.get_method(method_name);
996: if(result.method)
1.295.2.27.2. (paf 997:): result.string=execute_method(aclass, *result.method, optional_param,
1.295.2.16 paf 998: do_return_string);
999: return result;
1.99 paf 1000: }
1001:
1.295.2.27.2. (paf 1002:): const String* Request::execute_virtual_method(Value& aself,
1003:): const String& method_name) {
1004:): if(Value* value=aself.get_element(method_name, aself, false))
1005:): if(Junction* junction=value->get_junction())
1.295.2.7 paf 1006: if(const Method *method=junction->method)
1.295.2.27.2. (paf 1007:): return execute_method(aself, *method, 0/*no params*/, true);
1.188 parser 1008:
1.295.2.27.2. (paf 1009:): return 0;
1.176 parser 1010: }
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