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GeezerVison is showing github.com — lpython/src/lpython/semantics/python_comptime_eval.h at main · lcompilers/lpython Expand file tree/ Copy pathpython_comptime_eval.hMore file actions 744 lines (701 loc) · 36.9 KB / Copy pathpython_comptime_eval.hFile metadata and controls744 lines (701 loc) · 36.9 KB 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 #ifndef LPYTHON_SEMANTICS_COMPTIME_EVAL_H #define LPYTHON_SEMANTICS_COMPTIME_EVAL_H #include <complex> #include <string> #include <cstring> #include <cmath> #include <sstream> #include <algorithm> #include <iterator> #include <libasr/asr.h> #include <lpython/bigint.h> #include <libasr/string_utils.h> #include <lpython/utils.h> #include <lpython/semantics/semantic_exception.h> #include <libasr/asr_utils.h> namespace LCompilers::LPython { struct ProceduresDatabase { std::map<std::string, std::set<std::string>> to_be_ignored; ProceduresDatabase() { to_be_ignored = {{"numpy", {"empty", "int64", "int32", "float32", "float64", "reshape", "array", "int16", "complex64", "complex128", "int8", "exp", "exp2", "uint8", "uint16", "uint32", "uint64", "size", "bool_"}}, {"math", {"sin", "cos", "tan", "asin", "acos", "atan", "exp", "exp2", "expm1"}}, {"enum", {"Enum"}} }; } bool is_function_to_be_ignored(std::string& module_name, std::string& function_name) { if( to_be_ignored.find(module_name) == to_be_ignored.end() ) { return false; } return to_be_ignored[module_name].find(function_name) != to_be_ignored[module_name].end(); } }; struct PythonIntrinsicProcedures { const std::string m_builtin = "lpython_builtin"; typedef ASR::expr_t* (*comptime_eval_callback)(Allocator &, const Location &, Vec<ASR::expr_t*> &); // Table of intrinsics // The callback is only called if all arguments have compile time `value` // which is always one of the `Constant*` expression ASR nodes, so inside // the callback one can assume that. std::map<std::string, std::tuple<std::string, comptime_eval_callback>> comptime_eval_map; PythonIntrinsicProcedures() { comptime_eval_map = { // {"abs", {m_builtin, &eval_abs}}, {"pow", {m_builtin, &eval_pow}}, {"round", {m_builtin, &eval_round}}, {"bin", {m_builtin, &eval_bin}}, {"hex", {m_builtin, &eval_hex}}, {"oct", {m_builtin, &eval_oct}}, {"list", {m_builtin, &eval_list}}, {"complex", {m_builtin, &eval_complex}}, {"_lpython_imag", {m_builtin, &eval__lpython_imag}}, {"divmod", {m_builtin, &eval_divmod}}, {"_lpython_floordiv", {m_builtin, &eval__lpython_floordiv}}, {"_mod", {m_builtin, &eval__mod}}, {"max" , {m_builtin , &eval_max}}, {"min" , {m_builtin , &eval_min}}, {"sum" , {m_builtin , ¬_implemented}}, // The following functions for string methods are not used // for evaluation. {"_lpython_str_capitalize", {m_builtin, ¬_implemented}}, {"_lpython_str_count", {m_builtin, ¬_implemented}}, {"_lpython_str_lower", {m_builtin, ¬_implemented}}, {"_lpython_str_upper", {m_builtin, ¬_implemented}}, {"_lpython_str_join", {m_builtin, ¬_implemented}}, {"_lpython_str_find", {m_builtin, ¬_implemented}}, {"_lpython_str_isalpha", {m_builtin, ¬_implemented}}, {"_lpython_str_isalnum", {m_builtin, ¬_implemented}}, {"_lpython_str_isnumeric", {m_builtin, ¬_implemented}}, {"_lpython_str_title", {m_builtin, ¬_implemented}}, {"_lpython_str_istitle", {m_builtin, ¬_implemented}}, {"_lpython_str_rstrip", {m_builtin, ¬_implemented}}, {"_lpython_str_lstrip", {m_builtin, ¬_implemented}}, {"_lpython_str_strip", {m_builtin, ¬_implemented}}, {"_lpython_str_split", {m_builtin, ¬_implemented}}, {"_lpython_str_replace", {m_builtin, ¬_implemented}}, {"_lpython_str_swapcase", {m_builtin, ¬_implemented}}, {"_lpython_str_startswith", {m_builtin, ¬_implemented}}, {"_lpython_str_endswith", {m_builtin, ¬_implemented}}, {"_lpython_str_partition", {m_builtin, ¬_implemented}}, {"_lpython_str_islower", {m_builtin, ¬_implemented}}, {"_lpython_str_isupper", {m_builtin, ¬_implemented}}, {"_lpython_str_isdecimal", {m_builtin, ¬_implemented}}, {"_lpython_str_isascii", {m_builtin, ¬_implemented}}, {"_lpython_str_isspace", {m_builtin, ¬_implemented}}, {"_lpython_str_center", {m_builtin, ¬_implemented}}, {"_lpython_str_expandtabs", {m_builtin, ¬_implemented}} }; } // Return `true` if `name` is in the table of intrinsics bool is_intrinsic(std::string name) const { auto search = comptime_eval_map.find(name); if (search != comptime_eval_map.end()) { return true; } else { return false; } } // Looks up `name` in the table of intrinsics and returns the corresponding // module name; Otherwise rises an exception std::string get_module(std::string name, const Location &loc) const { auto search = comptime_eval_map.find(name); if (search != comptime_eval_map.end()) { std::string module_name = std::get<0>(search->second); return module_name; } else { throw SemanticError("Function '" + name + "' not found among intrinsic procedures", loc); } } // Evaluates the intrinsic function `name` at compile time ASR::expr_t *comptime_eval(std::string name, Allocator &al, const Location &loc, Vec<ASR::call_arg_t> &args) const { auto search = comptime_eval_map.find(name); if (search != comptime_eval_map.end()) { comptime_eval_callback cb = std::get<1>(search->second); Vec<ASR::call_arg_t> arg_values = ASRUtils::get_arg_values(al, args); if (arg_values.size() != args.size()) { // Not all arguments have compile time values; we do not call the callback return nullptr; } Vec<ASR::expr_t*> expr_args; expr_args.reserve(al, arg_values.size()); for( auto& a: arg_values ) { expr_args.push_back(al, a.m_value); } return cb(al, loc, expr_args); } else { throw SemanticError("Intrinsic function '" + name + "' compile time evaluation is not implemented yet", loc); } } static ASR::expr_t *not_implemented(Allocator &/*al*/, const Location &/*loc*/, Vec<ASR::expr_t*> &/*args*/) { // This intrinsic is not evaluated at compile time yet. return nullptr; } static ASR::expr_t *eval_str(Allocator &al, const Location &loc, Vec<ASR::expr_t*> &args) { LCOMPILERS_ASSERT(ASRUtils::all_args_evaluated(args)); if (args.size() == 0) { // create an empty string ASR::ttype_t* str_type = ASRUtils::TYPE(ASR::make_Allocatable_t(al, loc, ASRUtils::TYPE(ASR::make_String_t(al, loc, 1, nullptr, ASR::string_length_kindType::DeferredLength, ASR::string_physical_typeType::DescriptorString)))); return ASR::down_cast<ASR::expr_t>(ASR::make_StringConstant_t(al, loc, s2c(al, ""), str_type)); } std::string s = ""; ASR::expr_t* arg = args[0]; ASR::ttype_t* arg_type = ASRUtils::expr_type(arg); if (ASRUtils::is_integer(*arg_type)) { int64_t ival = ASR::down_cast<ASR::IntegerConstant_t>(arg)->m_n; s = std::to_string(ival); } else if (ASRUtils::is_real(*arg_type)) { double rval = ASR::down_cast<ASR::RealConstant_t>(arg)->m_r; s = std::to_string(rval); } else if (ASRUtils::is_logical(*arg_type)) { bool rv = ASR::down_cast<ASR::LogicalConstant_t>(arg)->m_value; s = rv ? "True" : "False"; } else if (ASRUtils::is_character(*arg_type)) { char* c = ASR::down_cast<ASR::StringConstant_t>(arg)->m_s; s = std::string(c); } else { throw SemanticError("str() argument must be real, integer, logical, or a string, not '" + ASRUtils::type_to_str_python_expr(arg_type, arg) + "'", loc); } ASR::ttype_t* str_type = ASRUtils::TYPE(ASR::make_Allocatable_t(al, loc, ASRUtils::TYPE(ASR::make_String_t(al, loc, 1, nullptr, ASR::string_length_kindType::DeferredLength, ASR::string_physical_typeType::DescriptorString)))); return ASR::down_cast<ASR::expr_t>(ASR::make_StringConstant_t(al, loc, s2c(al, s), str_type)); } static ASR::expr_t *eval__mod(Allocator &al, const Location &loc, Vec<ASR::expr_t*> &args) { LCOMPILERS_ASSERT(ASRUtils::all_args_evaluated(args)); if (args.size() != 2) { throw SemanticError("_mod() must have two integer/real arguments.", loc); } ASR::expr_t* arg1 = args[0], *arg2 = args[1]; LCOMPILERS_ASSERT(ASRUtils::check_equal_type(ASRUtils::expr_type(arg1), ASRUtils::expr_type(arg2), nullptr, nullptr)); ASR::ttype_t* type = ASRUtils::expr_type(arg1); if (ASRUtils::is_integer(*type)) { int64_t a = ASR::down_cast<ASR::IntegerConstant_t>(arg1)->m_n; int64_t b = ASR::down_cast<ASR::IntegerConstant_t>(arg2)->m_n; if(b == 0) { // Zero Division throw SemanticError("Integer division or modulo by zero",loc); } // Refer the following link to understand how modulo in C++ is modified to behave like Python. // https://stackoverflow.com/questions/1907565/c-and-python-different-behaviour-of-the-modulo-operation return ASR::down_cast<ASR::expr_t>( ASR::make_IntegerConstant_t(al, loc, ((a%b)+b)%b, type)); } else if (ASRUtils::is_real(*type)) { double a = ASR::down_cast<ASR::RealConstant_t>(arg1)->m_r; double b = ASR::down_cast<ASR::RealConstant_t>(arg2)->m_r; if (b == 0) { // Zero Division throw SemanticError("Float division or modulo by zero", loc); } // https://stackoverflow.com/questions/1907565/c-and-python-different-behaviour-of-the-modulo-operation return ASR::down_cast<ASR::expr_t>( ASR::make_RealConstant_t(al, loc, std::fmod(std::fmod(a, b) + b, b), type)); } else { throw SemanticError("_mod() must have both integer or both real arguments.", loc); } } static ASR::expr_t *eval_pow(Allocator &al, const Location &loc, Vec<ASR::expr_t*> &args) { LCOMPILERS_ASSERT(ASRUtils::all_args_evaluated(args)); ASR::expr_t* arg1 = args[0]; ASR::expr_t* arg2 = args[1]; ASR::ttype_t* arg1_type = ASRUtils::expr_type(arg1); ASR::ttype_t* arg2_type = ASRUtils::expr_type(arg2); int64_t mod_by = -1; if (args.size() == 3) { ASR::expr_t* arg3 = args[2]; ASR::ttype_t* arg3_type = ASRUtils::expr_type(arg3); if (!ASRUtils::is_integer(*arg3_type) ) { // Zero Division throw SemanticError("Third argument must be an integer. Found: " + \ ASRUtils::type_to_str_python_expr(arg3_type, arg3), loc); } mod_by = ASR::down_cast<ASR::IntegerConstant_t>(arg3)->m_n; } ASR::ttype_t *int_type = ASRUtils::TYPE(ASR::make_Integer_t(al, loc, 4)); ASR::ttype_t *real_type = ASRUtils::TYPE(ASR::make_Real_t(al, loc, 8)); ASR::ttype_t *complex_type = ASRUtils::TYPE(ASR::make_Complex_t(al, loc, 8)); if (ASRUtils::is_integer(*arg1_type) && ASRUtils::is_integer(*arg2_type)) { int64_t a = ASR::down_cast<ASR::IntegerConstant_t>(arg1)->m_n; int64_t b = ASR::down_cast<ASR::IntegerConstant_t>(arg2)->m_n; if (a == 0 && b < 0) { // Zero Division throw SemanticError("0.0 cannot be raised to a negative power.", loc); } if (b < 0) // Negative power return ASR::down_cast<ASR::expr_t>(make_RealConstant_t(al, loc, pow(a, b), real_type)); else {// Positive power if (mod_by == -1) return ASR::down_cast<ASR::expr_t>(make_RealConstant_t(al, loc, pow(a, b), real_type)); else { int64_t res = (int64_t)pow(a, b); return ASR::down_cast<ASR::expr_t>(make_RealConstant_t(al, loc, (double) (res % mod_by), real_type)); } } } else if (ASRUtils::is_real(*arg1_type) && ASRUtils::is_real(*arg2_type)) { double a = ASR::down_cast<ASR::RealConstant_t>(arg1)->m_r; double b = ASR::down_cast<ASR::RealConstant_t>(arg2)->m_r; if (a == 0.0 && b < 0.0) { // Zero Division throw SemanticError("0.0 cannot be raised to a negative power.", loc); } return ASR::down_cast<ASR::expr_t>(make_RealConstant_t(al, loc, pow(a, b), real_type)); } else if (ASRUtils::is_integer(*arg1_type) && ASRUtils::is_real(*arg2_type)) { int64_t a = ASR::down_cast<ASR::IntegerConstant_t>(arg1)->m_n; double b = ASR::down_cast<ASR::RealConstant_t>(arg2)->m_r; if (a == 0 && b < 0.0) { // Zero Division throw SemanticError("0.0 cannot be raised to a negative power.", loc); } return ASR::down_cast<ASR::expr_t>(make_RealConstant_t(al, loc, pow(a, b), real_type)); } else if (ASRUtils::is_real(*arg1_type) && ASRUtils::is_integer(*arg2_type)) { double a = ASR::down_cast<ASR::RealConstant_t>(arg1)->m_r; int64_t b = ASR::down_cast<ASR::IntegerConstant_t>(arg2)->m_n; if (a == 0.0 && b < 0) { // Zero Division throw SemanticError("0.0 cannot be raised to a negative power.", loc); } return ASR::down_cast<ASR::expr_t>(make_RealConstant_t(al, loc, pow(a, b), real_type)); } else if (ASRUtils::is_logical(*arg1_type) && ASRUtils::is_logical(*arg2_type)) { bool a = ASR::down_cast<ASR::LogicalConstant_t>(arg1)->m_value; bool b = ASR::down_cast<ASR::LogicalConstant_t>(arg2)->m_value; return ASR::down_cast<ASR::expr_t>(make_IntegerConstant_t(al, loc, pow(a, b), int_type)); } else if (ASRUtils::is_complex(*arg1_type) && ASRUtils::is_integer(*arg2_type)) { double re = ASR::down_cast<ASR::ComplexConstant_t>(arg1)->m_re; double im = ASR::down_cast<ASR::ComplexConstant_t>(arg1)->m_im; std::complex<double> x(re, im); int64_t b = ASR::down_cast<ASR::IntegerConstant_t>(arg2)->m_n; std::complex<double> y = pow(x, b); return ASR::down_cast<ASR::expr_t>(make_ComplexConstant_t(al, loc, y.real(), y.imag(), complex_type)); } else { throw SemanticError("pow() only works on integer, real, logical, and complex types", loc); } } static ASR::expr_t *eval_bin(Allocator &al, const Location &loc, Vec<ASR::expr_t*> &args) { LCOMPILERS_ASSERT(ASRUtils::all_args_evaluated(args)); if (args.size() != 1) { throw SemanticError("bin() takes exactly one argument (" + std::to_string(args.size()) + " given)", loc); } ASR::expr_t* expr = args[0]; ASR::ttype_t* type = ASRUtils::expr_type(expr); if (ASRUtils::is_integer(*type)) { int64_t n = ASR::down_cast<ASR::IntegerConstant_t>(expr)->m_n; std::string str, prefix; prefix = n > 0 ? "0b" : "-0b"; str += std::bitset<64>(std::abs(n)).to_string(); str.erase(0, str.find_first_not_of('0')); str.insert(0, prefix); ASR::ttype_t* str_type = ASRUtils::TYPE(ASR::make_Allocatable_t(al, loc, ASRUtils::TYPE(ASR::make_String_t(al, loc, 1, nullptr, ASR::string_length_kindType::DeferredLength, ASR::string_physical_typeType::DescriptorString)))); return ASR::down_cast<ASR::expr_t>(make_StringConstant_t(al, loc, s2c(al, str), str_type)); } else { throw SemanticError("bin() argument must be an integer, not '" + ASRUtils::type_to_str_python_expr(type, expr) + "'", loc); } } static ASR::expr_t *eval_hex(Allocator &al, const Location &loc, Vec<ASR::expr_t*> &args) { LCOMPILERS_ASSERT(ASRUtils::all_args_evaluated(args)); if (args.size() != 1) { throw SemanticError("hex() takes exactly one argument (" + std::to_string(args.size()) + " given)", loc); } ASR::expr_t* expr = args[0]; ASR::ttype_t* type = ASRUtils::expr_type(expr); if (ASRUtils::is_integer(*type)) { int64_t n = ASR::down_cast<ASR::IntegerConstant_t>(expr)->m_n; std::string str, prefix; std::stringstream ss; prefix = n > 0 ? "0x" : "-0x"; ss << std::hex << std::abs(n); str += ss.str(); str.insert(0, prefix); ASR::ttype_t* str_type = ASRUtils::TYPE(ASR::make_Allocatable_t(al, loc, ASRUtils::TYPE(ASR::make_String_t(al, loc, 1, nullptr, ASR::string_length_kindType::DeferredLength, ASR::string_physical_typeType::DescriptorString)))); return ASR::down_cast<ASR::expr_t>(make_StringConstant_t(al, loc, s2c(al, str), str_type)); } else { throw SemanticError("hex() argument must be an integer, not '" + ASRUtils::type_to_str_python_expr(type, expr) + "'", loc); } } static ASR::expr_t *eval_oct(Allocator &al, const Location &loc, Vec<ASR::expr_t*> &args) { LCOMPILERS_ASSERT(ASRUtils::all_args_evaluated(args)); if (args.size() != 1) { throw SemanticError("oct() takes exactly one argument (" + std::to_string(args.size()) + " given)", loc); } ASR::expr_t* expr = args[0]; ASR::ttype_t* type = ASRUtils::expr_type(expr); if (ASRUtils::is_integer(*type)) { int64_t n = ASR::down_cast<ASR::IntegerConstant_t>(expr)->m_n; std::string str, prefix; std::stringstream ss; prefix = n > 0 ? "0o" : "-0o"; ss << std::oct << std::abs(n); str += ss.str(); str.insert(0, prefix); ASR::ttype_t* str_type = ASRUtils::TYPE(ASR::make_Allocatable_t(al, loc, ASRUtils::TYPE(ASR::make_String_t(al, loc, 1, nullptr, ASR::string_length_kindType::DeferredLength, ASR::string_physical_typeType::DescriptorString)))); return ASR::down_cast<ASR::expr_t>(make_StringConstant_t(al, loc, s2c(al, str), str_type)); } else { throw SemanticError("oct() argument must be an integer, not '" + ASRUtils::type_to_str_python_expr(type, expr) + "'", loc); } } static ASR::expr_t *eval_list(Allocator &al, const Location &loc, Vec<ASR::expr_t*> &args) { LCOMPILERS_ASSERT(ASRUtils::all_args_evaluated(args)); if (args.size() > 1) { throw SemanticError("list() takes 0 or 1 argument (" + std::to_string(args.size()) + " given)", loc); } LCOMPILERS_ASSERT(args.size()==1); ASR::expr_t *arg = args[0]; ASR::ttype_t *type = ASRUtils::expr_type(arg); ASR::ttype_t* str_type = ASRUtils::TYPE(ASR::make_Allocatable_t(al, loc, ASRUtils::TYPE(ASR::make_String_t(al, loc, 1, nullptr, ASR::string_length_kindType::DeferredLength, ASR::string_physical_typeType::DescriptorString)))); if (ASRUtils::is_integer(*type) || ASRUtils::is_real(*type) || ASRUtils::is_complex(*type) || ASRUtils::is_logical(*type)) { throw SemanticError("Integer, Real, Complex and Boolean are not iterable " "and cannot be converted to List", loc); } else if (ASR::is_a<ASR::List_t>(*type)) { return arg; } else if (ASRUtils::is_character(*type)) { ASR::ttype_t *list_type = ASRUtils::TYPE(ASR::make_List_t(al, loc, str_type)); LCOMPILERS_ASSERT(ASRUtils::expr_value(arg) != nullptr) std::string c = ASR::down_cast<ASR::StringConstant_t>(arg)->m_s; Vec<ASR::expr_t*> list; list.reserve(al, c.length()); std::string r; for (size_t i=0; i<c.length(); i++) { r.push_back(char(c[i])); list.push_back(al, ASR::down_cast<ASR::expr_t>( ASR::make_StringConstant_t(al, loc, s2c(al, r), str_type))); r.pop_back(); } return ASR::down_cast<ASR::expr_t>(ASR::make_ListConstant_t(al, loc, list.p, list.size(), list_type)); } else { throw SemanticError("'" + ASRUtils::type_to_str_python_expr(type, arg) + "' object conversion to List is not implemented ", arg->base.loc); } } static ASR::expr_t *eval_round(Allocator &al, const Location &loc, Vec<ASR::expr_t*> &args) { LCOMPILERS_ASSERT(ASRUtils::all_args_evaluated(args)); ASR::ttype_t *type = ASRUtils::TYPE(ASR::make_Integer_t(al, loc, 4)); if (args.size() != 1) { throw SemanticError("round() missing required argument 'number' (pos 1)", loc); } ASR::expr_t* expr = args[0]; ASR::ttype_t* t = ASRUtils::expr_type(expr); if (ASRUtils::is_real(*t)) { double rv = ASR::down_cast<ASR::RealConstant_t>(expr)->m_r; int64_t rounded = round(rv); if (fabs(rv-rounded) == 0.5) rounded = 2.0*round(rv/2.0); return ASR::down_cast<ASR::expr_t>(make_IntegerConstant_t(al, loc, rounded, type)); } else if (ASRUtils::is_integer(*t)) { int64_t rv = ASR::down_cast<ASR::IntegerConstant_t>(expr)->m_n; return ASR::down_cast<ASR::expr_t>(make_IntegerConstant_t(al, loc, rv, type)); } else if (ASRUtils::is_logical(*t)) { int64_t rv = ASR::down_cast<ASR::LogicalConstant_t>(expr)->m_value; return ASR::down_cast<ASR::expr_t>(make_IntegerConstant_t(al, loc, rv, type)); } else { throw SemanticError("round() argument must be float, integer, or logical for now, not '" + ASRUtils::type_to_str_python_expr(t, expr) + "'", loc); } } static ASR::expr_t *eval_complex(Allocator &al, const Location &loc, Vec<ASR::expr_t*> &args) { LCOMPILERS_ASSERT(ASRUtils::all_args_evaluated(args)); int16_t n_args = args.size(); ASR::ttype_t *type = ASRUtils::TYPE(ASR::make_Complex_t(al, loc, 8)); if( n_args > 2 || n_args < 0 ) { // n_args shouldn't be less than 0 but added this check for safety throw SemanticError("Only constant integer or real values are supported as " "the (at most two) arguments of complex()", loc); } double c1 = 0.0, c2 = 0.0; // Default if n_args = 0 if (n_args >= 1) { // Handles both n_args = 1 and n_args = 2 if (ASR::is_a<ASR::IntegerConstant_t>(*args[0])) { c1 = ASR::down_cast<ASR::IntegerConstant_t>(args[0])->m_n; } else if (ASR::is_a<ASR::RealConstant_t>(*args[0])) { c1 = ASR::down_cast<ASR::RealConstant_t>(args[0])->m_r; } } if (n_args == 2) { // Extracts imaginary component if n_args = 2 if (ASR::is_a<ASR::IntegerConstant_t>(*args[1])) { c2 = ASR::down_cast<ASR::IntegerConstant_t>(args[1])->m_n; } else if (ASR::is_a<ASR::RealConstant_t>(*args[1])) { c2 = ASR::down_cast<ASR::RealConstant_t>(args[1])->m_r; } } return ASR::down_cast<ASR::expr_t>(make_ComplexConstant_t(al, loc, c1, c2, type)); } static ASR::expr_t *eval__lpython_imag(Allocator &al, const Location &loc, Vec<ASR::expr_t*> &args ) { LCOMPILERS_ASSERT(ASRUtils::all_args_evaluated(args)); if (args.size() != 1) { throw SemanticError("Intrinsic _lpython_imag function accepts exactly 1 argument", loc); } ASR::expr_t* imag_arg = args[0]; ASR::ttype_t *type = ASRUtils::TYPE(ASR::make_Real_t(al, loc, 8)); if (ASR::is_a<ASR::Complex_t>(*ASRUtils::expr_type(imag_arg))) { double im = ASR::down_cast<ASR::ComplexConstant_t>(imag_arg)->m_im; double result = im; return ASR::down_cast<ASR::expr_t>(ASR::make_RealConstant_t(al, loc, result, type)); } else { throw SemanticError("Argument of the _lpython_imag() function must be Complex", loc); } } static ASR::expr_t *eval__lpython_floordiv(Allocator &al, const Location &loc, Vec<ASR::expr_t *> &args) { LCOMPILERS_ASSERT(ASRUtils::all_args_evaluated(args)); if (args.size() != 2) { throw SemanticError("_lpython_floordiv() takes exactly two arguments (" + std::to_string(args.size()) + " given)", loc); } ASR::expr_t *arg1 = args[0]; ASR::expr_t *arg2 = args[1]; ASR::ttype_t *arg1_type = ASRUtils::expr_type(arg1); ASR::ttype_t *arg2_type = ASRUtils::expr_type(arg2); if (ASRUtils::is_real(*arg1_type) && ASRUtils::is_real(*arg2_type)) { int kind = ASRUtils::extract_kind_from_ttype_t(arg1_type); ASR::ttype_t *type = nullptr; if (kind == 8) { type = ASRUtils::TYPE(ASR::make_Real_t(al, loc, 8)); } else { type = ASRUtils::TYPE(ASR::make_Real_t(al, loc, 4)); } double n = ASR::down_cast<ASR::RealConstant_t>(arg1)->m_r; double d = ASR::down_cast<ASR::RealConstant_t>(arg2)->m_r; double r = n/d, res = 0.0; int64_t ival = (int64_t)r; if (r > 0 || ival == r) { res = ival; } else { res = ival-1; } return ASR::down_cast<ASR::expr_t>(make_RealConstant_t(al, loc, res, type)); } else if (ASRUtils::is_integer(*arg1_type) && ASRUtils::is_integer(*arg2_type)) { int kind = ASRUtils::extract_kind_from_ttype_t(arg1_type); ASR::ttype_t *type = nullptr; if (kind == 8) { type = ASRUtils::TYPE(ASR::make_Integer_t(al, loc, 8)); } else { type = ASRUtils::TYPE(ASR::make_Integer_t(al, loc, 4)); } int64_t n = ASR::down_cast<ASR::IntegerConstant_t>(arg1)->m_n; int64_t d = ASR::down_cast<ASR::IntegerConstant_t>(arg2)->m_n; int64_t res = 0; double r = 1.0*n/d; int64_t ival = (int64_t)r; if (r > 0 || ival == r) { res = ival; } else { res = ival-1; } return ASR::down_cast<ASR::expr_t>(make_IntegerConstant_t(al, loc, res, type)); } else if (ASRUtils::is_logical(*arg1_type) && ASRUtils::is_logical(*arg2_type)) { ASR::ttype_t *type = ASRUtils::TYPE(ASR::make_Logical_t(al, loc, 1)); bool n = false, d = false; ASRUtils::extract_value(arg1, n); ASRUtils::extract_value(arg2, d); if( !d ) { throw SemanticError("Denominator cannot be False or 0.", arg2->base.loc); } return ASR::down_cast<ASR::expr_t>(make_LogicalConstant_t(al, loc, n, type)); } else { throw SemanticError("Only real/integers/logical arguments are expected.", loc); } } static ASR::expr_t *eval_divmod(Allocator &al, const Location &loc, Vec<ASR::expr_t *> &args) { LCOMPILERS_ASSERT(ASRUtils::all_args_evaluated(args)); if (args.size() != 2) { throw SemanticError("divmod() takes exactly two arguments (" + std::to_string(args.size()) + " given)", loc); } ASR::expr_t *arg1 = args[0]; ASR::expr_t *arg2 = args[1]; ASR::ttype_t *arg1_type = ASRUtils::expr_type(arg1); ASR::ttype_t *arg2_type = ASRUtils::expr_type(arg2); Vec<ASR::expr_t *> tuple; // pair consisting of quotient and remainder tuple.reserve(al, 2); Vec<ASR::ttype_t *> tuple_type_vec; tuple_type_vec.reserve(al, 2); if (ASRUtils::is_integer(*arg1_type) && ASRUtils::is_integer(*arg2_type)) { int64_t ival1 = ASR::down_cast<ASR::IntegerConstant_t>(arg1)->m_n; int64_t ival2 = ASR::down_cast<ASR::IntegerConstant_t>(arg2)->m_n; if (ival2 == 0) { throw SemanticError("Integer division or modulo by zero not possible", loc); } else { int64_t div = ival1 / ival2; int64_t mod = ival1 % ival2; tuple.push_back(al, ASRUtils::EXPR( ASR::make_IntegerConstant_t(al, loc, div, arg1_type))); tuple.push_back(al, ASRUtils::EXPR( ASR::make_IntegerConstant_t(al, loc, mod, arg1_type))); tuple_type_vec.push_back(al, arg1_type); tuple_type_vec.push_back(al, arg2_type); ASR::ttype_t *tuple_type = ASRUtils::TYPE(ASR::make_Tuple_t(al, loc, tuple_type_vec.p, tuple_type_vec.n)); return ASR::down_cast<ASR::expr_t>(make_TupleConstant_t(al, loc, tuple.p, tuple.size(), tuple_type)); } } else { throw SemanticError("Both arguments of divmod() must be integers for now, not '" + ASRUtils::type_to_str_python_expr(arg1_type, arg1) + "' and '" + ASRUtils::type_to_str_python_expr(arg2_type, arg2) + "'", loc); } } static ASR::expr_t *eval_max(Allocator &/*al*/, const Location &loc, Vec<ASR::expr_t *> &args) { LCOMPILERS_ASSERT(ASRUtils::all_args_evaluated(args)); bool semantic_error_flag = args.size() != 0; std::string msg = "max() takes many arguments to comparing"; ASR::expr_t *first_element = args[0]; ASR::ttype_t *first_element_type = ASRUtils::expr_type(first_element); semantic_error_flag &= ASRUtils::is_integer(*first_element_type) || ASRUtils::is_real(*first_element_type) || ASRUtils::is_character(*first_element_type); int32_t biggest_ind = 0; if (semantic_error_flag) { if (ASRUtils::is_integer(*first_element_type)) { int32_t biggest = 0; for (size_t i = 0; i < args.size() && semantic_error_flag; i++) { ASR::expr_t *current_arg = args[i]; ASR::ttype_t *current_arg_type = ASRUtils::expr_type(current_arg); semantic_error_flag &= current_arg_type->type == first_element_type->type; if (!semantic_error_flag) { msg = "type of arg in index [" + std::to_string(i) = "] is not comparable"; break; } int32_t current_val = ASR::down_cast<ASR::IntegerConstant_t>(current_arg)->m_n; if (i == 0) { biggest = current_val; biggest_ind = 0; } else { if (current_val > biggest) { biggest = current_val; biggest_ind = i; } } } if (semantic_error_flag) { return args[biggest_ind]; } } else if (ASRUtils::is_real(*first_element_type)) { double_t biggest = 0; for (size_t i = 0; i < args.size() && semantic_error_flag; i++) { ASR::expr_t *current_arg = args[i]; ASR::ttype_t *current_arg_type = ASRUtils::expr_type(current_arg); semantic_error_flag &= current_arg_type->type == first_element_type->type; if (!semantic_error_flag) { msg = "type of arg in index [" + std::to_string(i) = "] is not comparable"; break; } double_t current_val = ASR::down_cast<ASR::RealConstant_t>(current_arg)->m_r; if (i == 0) { biggest = current_val; biggest_ind = 0; } else { if (current_val - biggest > 1e-6) { biggest = current_val; biggest_ind = i; } } } if (semantic_error_flag) { return args[biggest_ind]; } } } throw SemanticError(msg, loc); } static ASR::expr_t *eval_min(Allocator &/*al*/, const Location &loc, Vec<ASR::expr_t *> &args) { LCOMPILERS_ASSERT(ASRUtils::all_args_evaluated(args)); bool semantic_error_flag = args.size() != 0; std::string msg = "min() takes many arguments to comparing"; ASR::expr_t *first_element = args[0]; ASR::ttype_t *first_element_type = ASRUtils::expr_type(first_element); semantic_error_flag &= ASRUtils::is_integer(*first_element_type) || ASRUtils::is_real(*first_element_type) || ASRUtils::is_character(*first_element_type); int32_t smallest_ind = 0; if (semantic_error_flag) { if (ASRUtils::is_integer(*first_element_type)) { int32_t smallest = 0; for (size_t i = 0; i < args.size() && semantic_error_flag; i++) { ASR::expr_t *current_arg = args[i]; ASR::ttype_t *current_arg_type = ASRUtils::expr_type(current_arg); semantic_error_flag &= current_arg_type->type == first_element_type->type; if (!semantic_error_flag) { msg = "type of arg in index [" + std::to_string(i) = "] is not comparable"; break; } int32_t current_val = ASR::down_cast<ASR::IntegerConstant_t>(current_arg)->m_n; if (i == 0) { smallest = current_val; smallest_ind = 0; } else { if (current_val < smallest) { smallest = current_val; smallest_ind = i; } } } if (semantic_error_flag) { return args[smallest_ind]; } } else if (ASRUtils::is_real(*first_element_type)) { double_t smallest = 0; for (size_t i = 0; i < args.size() && semantic_error_flag; i++) { ASR::expr_t *current_arg = args[i]; ASR::ttype_t *current_arg_type = ASRUtils::expr_type(current_arg); semantic_error_flag &= current_arg_type->type == first_element_type->type; if (!semantic_error_flag) { msg = "type of arg in index [" + std::to_string(i) = "] is not comparable"; break; } double_t current_val = ASR::down_cast<ASR::RealConstant_t>(current_arg)->m_r; if (i == 0) { smallest = current_val; smallest_ind = 0; } else { if (smallest - current_val > 1e-6) { smallest = current_val; smallest_ind = i; } } } if (semantic_error_flag) { return args[smallest_ind]; } } } throw SemanticError(msg, loc); } }; // ComptimeEval } // namespace LCompilers::LPython #endif /* LPYTHON_SEMANTICS_COMPTIME_EVAL_H */ |
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