sqlglot.tokens
1from __future__ import annotations 2 3import os 4import typing as t 5from enum import auto 6 7from sqlglot.errors import SqlglotError, TokenError 8from sqlglot.helper import AutoName 9from sqlglot.trie import TrieResult, in_trie, new_trie 10 11if t.TYPE_CHECKING: 12 from sqlglot.dialects.dialect import DialectType 13 14 15try: 16 from sqlglotrs import ( # type: ignore 17 Tokenizer as RsTokenizer, 18 TokenizerDialectSettings as RsTokenizerDialectSettings, 19 TokenizerSettings as RsTokenizerSettings, 20 TokenTypeSettings as RsTokenTypeSettings, 21 ) 22 23 USE_RS_TOKENIZER = os.environ.get("SQLGLOTRS_TOKENIZER", "1") == "1" 24except ImportError: 25 USE_RS_TOKENIZER = False 26 27 28class TokenType(AutoName): 29 L_PAREN = auto() 30 R_PAREN = auto() 31 L_BRACKET = auto() 32 R_BRACKET = auto() 33 L_BRACE = auto() 34 R_BRACE = auto() 35 COMMA = auto() 36 DOT = auto() 37 DASH = auto() 38 PLUS = auto() 39 COLON = auto() 40 DCOLON = auto() 41 DQMARK = auto() 42 SEMICOLON = auto() 43 STAR = auto() 44 BACKSLASH = auto() 45 SLASH = auto() 46 LT = auto() 47 LTE = auto() 48 GT = auto() 49 GTE = auto() 50 NOT = auto() 51 EQ = auto() 52 NEQ = auto() 53 NULLSAFE_EQ = auto() 54 COLON_EQ = auto() 55 AND = auto() 56 OR = auto() 57 AMP = auto() 58 DPIPE = auto() 59 PIPE = auto() 60 PIPE_SLASH = auto() 61 DPIPE_SLASH = auto() 62 CARET = auto() 63 TILDA = auto() 64 ARROW = auto() 65 DARROW = auto() 66 FARROW = auto() 67 HASH = auto() 68 HASH_ARROW = auto() 69 DHASH_ARROW = auto() 70 LR_ARROW = auto() 71 DAT = auto() 72 LT_AT = auto() 73 AT_GT = auto() 74 DOLLAR = auto() 75 PARAMETER = auto() 76 SESSION_PARAMETER = auto() 77 DAMP = auto() 78 XOR = auto() 79 DSTAR = auto() 80 81 BLOCK_START = auto() 82 BLOCK_END = auto() 83 84 SPACE = auto() 85 BREAK = auto() 86 87 STRING = auto() 88 NUMBER = auto() 89 IDENTIFIER = auto() 90 DATABASE = auto() 91 COLUMN = auto() 92 COLUMN_DEF = auto() 93 SCHEMA = auto() 94 TABLE = auto() 95 VAR = auto() 96 BIT_STRING = auto() 97 HEX_STRING = auto() 98 BYTE_STRING = auto() 99 NATIONAL_STRING = auto() 100 RAW_STRING = auto() 101 HEREDOC_STRING = auto() 102 UNICODE_STRING = auto() 103 104 # types 105 BIT = auto() 106 BOOLEAN = auto() 107 TINYINT = auto() 108 UTINYINT = auto() 109 SMALLINT = auto() 110 USMALLINT = auto() 111 MEDIUMINT = auto() 112 UMEDIUMINT = auto() 113 INT = auto() 114 UINT = auto() 115 BIGINT = auto() 116 UBIGINT = auto() 117 INT128 = auto() 118 UINT128 = auto() 119 INT256 = auto() 120 UINT256 = auto() 121 FLOAT = auto() 122 DOUBLE = auto() 123 DECIMAL = auto() 124 UDECIMAL = auto() 125 BIGDECIMAL = auto() 126 CHAR = auto() 127 NCHAR = auto() 128 VARCHAR = auto() 129 NVARCHAR = auto() 130 BPCHAR = auto() 131 TEXT = auto() 132 MEDIUMTEXT = auto() 133 LONGTEXT = auto() 134 MEDIUMBLOB = auto() 135 LONGBLOB = auto() 136 TINYBLOB = auto() 137 TINYTEXT = auto() 138 NAME = auto() 139 BINARY = auto() 140 VARBINARY = auto() 141 JSON = auto() 142 JSONB = auto() 143 TIME = auto() 144 TIMETZ = auto() 145 TIMESTAMP = auto() 146 TIMESTAMPTZ = auto() 147 TIMESTAMPLTZ = auto() 148 TIMESTAMP_S = auto() 149 TIMESTAMP_MS = auto() 150 TIMESTAMP_NS = auto() 151 DATETIME = auto() 152 DATETIME64 = auto() 153 DATE = auto() 154 DATE32 = auto() 155 INT4RANGE = auto() 156 INT4MULTIRANGE = auto() 157 INT8RANGE = auto() 158 INT8MULTIRANGE = auto() 159 NUMRANGE = auto() 160 NUMMULTIRANGE = auto() 161 TSRANGE = auto() 162 TSMULTIRANGE = auto() 163 TSTZRANGE = auto() 164 TSTZMULTIRANGE = auto() 165 DATERANGE = auto() 166 DATEMULTIRANGE = auto() 167 UUID = auto() 168 GEOGRAPHY = auto() 169 NULLABLE = auto() 170 GEOMETRY = auto() 171 HLLSKETCH = auto() 172 HSTORE = auto() 173 SUPER = auto() 174 SERIAL = auto() 175 SMALLSERIAL = auto() 176 BIGSERIAL = auto() 177 XML = auto() 178 YEAR = auto() 179 UNIQUEIDENTIFIER = auto() 180 USERDEFINED = auto() 181 MONEY = auto() 182 SMALLMONEY = auto() 183 ROWVERSION = auto() 184 IMAGE = auto() 185 VARIANT = auto() 186 OBJECT = auto() 187 INET = auto() 188 IPADDRESS = auto() 189 IPPREFIX = auto() 190 IPV4 = auto() 191 IPV6 = auto() 192 ENUM = auto() 193 ENUM8 = auto() 194 ENUM16 = auto() 195 FIXEDSTRING = auto() 196 LOWCARDINALITY = auto() 197 NESTED = auto() 198 AGGREGATEFUNCTION = auto() 199 SIMPLEAGGREGATEFUNCTION = auto() 200 UNKNOWN = auto() 201 202 # keywords 203 ALIAS = auto() 204 ALTER = auto() 205 ALWAYS = auto() 206 ALL = auto() 207 ANTI = auto() 208 ANY = auto() 209 APPLY = auto() 210 ARRAY = auto() 211 ASC = auto() 212 ASOF = auto() 213 AUTO_INCREMENT = auto() 214 BEGIN = auto() 215 BETWEEN = auto() 216 CACHE = auto() 217 CASE = auto() 218 CHARACTER_SET = auto() 219 CLUSTER_BY = auto() 220 COLLATE = auto() 221 COMMAND = auto() 222 COMMENT = auto() 223 COMMIT = auto() 224 CONNECT_BY = auto() 225 CONSTRAINT = auto() 226 CREATE = auto() 227 CROSS = auto() 228 CUBE = auto() 229 CURRENT_DATE = auto() 230 CURRENT_DATETIME = auto() 231 CURRENT_TIME = auto() 232 CURRENT_TIMESTAMP = auto() 233 CURRENT_USER = auto() 234 DEFAULT = auto() 235 DELETE = auto() 236 DESC = auto() 237 DESCRIBE = auto() 238 DICTIONARY = auto() 239 DISTINCT = auto() 240 DISTRIBUTE_BY = auto() 241 DIV = auto() 242 DROP = auto() 243 ELSE = auto() 244 END = auto() 245 ESCAPE = auto() 246 EXCEPT = auto() 247 EXECUTE = auto() 248 EXISTS = auto() 249 FALSE = auto() 250 FETCH = auto() 251 FILTER = auto() 252 FINAL = auto() 253 FIRST = auto() 254 FOR = auto() 255 FORCE = auto() 256 FOREIGN_KEY = auto() 257 FORMAT = auto() 258 FROM = auto() 259 FULL = auto() 260 FUNCTION = auto() 261 GLOB = auto() 262 GLOBAL = auto() 263 GROUP_BY = auto() 264 GROUPING_SETS = auto() 265 HAVING = auto() 266 HINT = auto() 267 IGNORE = auto() 268 ILIKE = auto() 269 ILIKE_ANY = auto() 270 IN = auto() 271 INDEX = auto() 272 INNER = auto() 273 INSERT = auto() 274 INTERSECT = auto() 275 INTERVAL = auto() 276 INTO = auto() 277 INTRODUCER = auto() 278 IRLIKE = auto() 279 IS = auto() 280 ISNULL = auto() 281 JOIN = auto() 282 JOIN_MARKER = auto() 283 KEEP = auto() 284 KILL = auto() 285 LANGUAGE = auto() 286 LATERAL = auto() 287 LEFT = auto() 288 LIKE = auto() 289 LIKE_ANY = auto() 290 LIMIT = auto() 291 LOAD = auto() 292 LOCK = auto() 293 MAP = auto() 294 MATCH_RECOGNIZE = auto() 295 MEMBER_OF = auto() 296 MERGE = auto() 297 MOD = auto() 298 MODEL = auto() 299 NATURAL = auto() 300 NEXT = auto() 301 NOTNULL = auto() 302 NULL = auto() 303 OBJECT_IDENTIFIER = auto() 304 OFFSET = auto() 305 ON = auto() 306 ONLY = auto() 307 OPERATOR = auto() 308 ORDER_BY = auto() 309 ORDER_SIBLINGS_BY = auto() 310 ORDERED = auto() 311 ORDINALITY = auto() 312 OUTER = auto() 313 OVER = auto() 314 OVERLAPS = auto() 315 OVERWRITE = auto() 316 PARTITION = auto() 317 PARTITION_BY = auto() 318 PERCENT = auto() 319 PIVOT = auto() 320 PLACEHOLDER = auto() 321 POSITIONAL = auto() 322 PRAGMA = auto() 323 PREWHERE = auto() 324 PRIMARY_KEY = auto() 325 PROCEDURE = auto() 326 PROPERTIES = auto() 327 PSEUDO_TYPE = auto() 328 QUALIFY = auto() 329 QUOTE = auto() 330 RANGE = auto() 331 RECURSIVE = auto() 332 REFRESH = auto() 333 REPLACE = auto() 334 RETURNING = auto() 335 REFERENCES = auto() 336 RIGHT = auto() 337 RLIKE = auto() 338 ROLLBACK = auto() 339 ROLLUP = auto() 340 ROW = auto() 341 ROWS = auto() 342 SELECT = auto() 343 SEMI = auto() 344 SEPARATOR = auto() 345 SEQUENCE = auto() 346 SERDE_PROPERTIES = auto() 347 SET = auto() 348 SETTINGS = auto() 349 SHOW = auto() 350 SIMILAR_TO = auto() 351 SOME = auto() 352 SORT_BY = auto() 353 START_WITH = auto() 354 STORAGE_INTEGRATION = auto() 355 STRUCT = auto() 356 TABLE_SAMPLE = auto() 357 TEMPORARY = auto() 358 TOP = auto() 359 THEN = auto() 360 TRUE = auto() 361 TRUNCATE = auto() 362 UNCACHE = auto() 363 UNION = auto() 364 UNNEST = auto() 365 UNPIVOT = auto() 366 UPDATE = auto() 367 USE = auto() 368 USING = auto() 369 VALUES = auto() 370 VIEW = auto() 371 VOLATILE = auto() 372 WHEN = auto() 373 WHERE = auto() 374 WINDOW = auto() 375 WITH = auto() 376 UNIQUE = auto() 377 VERSION_SNAPSHOT = auto() 378 TIMESTAMP_SNAPSHOT = auto() 379 OPTION = auto() 380 381 382_ALL_TOKEN_TYPES = list(TokenType) 383_TOKEN_TYPE_TO_INDEX = {token_type: i for i, token_type in enumerate(_ALL_TOKEN_TYPES)} 384 385 386class Token: 387 __slots__ = ("token_type", "text", "line", "col", "start", "end", "comments") 388 389 @classmethod 390 def number(cls, number: int) -> Token: 391 """Returns a NUMBER token with `number` as its text.""" 392 return cls(TokenType.NUMBER, str(number)) 393 394 @classmethod 395 def string(cls, string: str) -> Token: 396 """Returns a STRING token with `string` as its text.""" 397 return cls(TokenType.STRING, string) 398 399 @classmethod 400 def identifier(cls, identifier: str) -> Token: 401 """Returns an IDENTIFIER token with `identifier` as its text.""" 402 return cls(TokenType.IDENTIFIER, identifier) 403 404 @classmethod 405 def var(cls, var: str) -> Token: 406 """Returns an VAR token with `var` as its text.""" 407 return cls(TokenType.VAR, var) 408 409 def __init__( 410 self, 411 token_type: TokenType, 412 text: str, 413 line: int = 1, 414 col: int = 1, 415 start: int = 0, 416 end: int = 0, 417 comments: t.Optional[t.List[str]] = None, 418 ) -> None: 419 """Token initializer. 420 421 Args: 422 token_type: The TokenType Enum. 423 text: The text of the token. 424 line: The line that the token ends on. 425 col: The column that the token ends on. 426 start: The start index of the token. 427 end: The ending index of the token. 428 comments: The comments to attach to the token. 429 """ 430 self.token_type = token_type 431 self.text = text 432 self.line = line 433 self.col = col 434 self.start = start 435 self.end = end 436 self.comments = [] if comments is None else comments 437 438 def __repr__(self) -> str: 439 attributes = ", ".join(f"{k}: {getattr(self, k)}" for k in self.__slots__) 440 return f"<Token {attributes}>" 441 442 443class _Tokenizer(type): 444 def __new__(cls, clsname, bases, attrs): 445 klass = super().__new__(cls, clsname, bases, attrs) 446 447 def _convert_quotes(arr: t.List[str | t.Tuple[str, str]]) -> t.Dict[str, str]: 448 return dict( 449 (item, item) if isinstance(item, str) else (item[0], item[1]) for item in arr 450 ) 451 452 def _quotes_to_format( 453 token_type: TokenType, arr: t.List[str | t.Tuple[str, str]] 454 ) -> t.Dict[str, t.Tuple[str, TokenType]]: 455 return {k: (v, token_type) for k, v in _convert_quotes(arr).items()} 456 457 klass._QUOTES = _convert_quotes(klass.QUOTES) 458 klass._IDENTIFIERS = _convert_quotes(klass.IDENTIFIERS) 459 460 klass._FORMAT_STRINGS = { 461 **{ 462 p + s: (e, TokenType.NATIONAL_STRING) 463 for s, e in klass._QUOTES.items() 464 for p in ("n", "N") 465 }, 466 **_quotes_to_format(TokenType.BIT_STRING, klass.BIT_STRINGS), 467 **_quotes_to_format(TokenType.BYTE_STRING, klass.BYTE_STRINGS), 468 **_quotes_to_format(TokenType.HEX_STRING, klass.HEX_STRINGS), 469 **_quotes_to_format(TokenType.RAW_STRING, klass.RAW_STRINGS), 470 **_quotes_to_format(TokenType.HEREDOC_STRING, klass.HEREDOC_STRINGS), 471 **_quotes_to_format(TokenType.UNICODE_STRING, klass.UNICODE_STRINGS), 472 } 473 474 klass._STRING_ESCAPES = set(klass.STRING_ESCAPES) 475 klass._IDENTIFIER_ESCAPES = set(klass.IDENTIFIER_ESCAPES) 476 klass._COMMENTS = { 477 **dict( 478 (comment, None) if isinstance(comment, str) else (comment[0], comment[1]) 479 for comment in klass.COMMENTS 480 ), 481 "{#": "#}", # Ensure Jinja comments are tokenized correctly in all dialects 482 } 483 484 klass._KEYWORD_TRIE = new_trie( 485 key.upper() 486 for key in ( 487 *klass.KEYWORDS, 488 *klass._COMMENTS, 489 *klass._QUOTES, 490 *klass._FORMAT_STRINGS, 491 ) 492 if " " in key or any(single in key for single in klass.SINGLE_TOKENS) 493 ) 494 495 if USE_RS_TOKENIZER: 496 settings = RsTokenizerSettings( 497 white_space={k: _TOKEN_TYPE_TO_INDEX[v] for k, v in klass.WHITE_SPACE.items()}, 498 single_tokens={k: _TOKEN_TYPE_TO_INDEX[v] for k, v in klass.SINGLE_TOKENS.items()}, 499 keywords={k: _TOKEN_TYPE_TO_INDEX[v] for k, v in klass.KEYWORDS.items()}, 500 numeric_literals=klass.NUMERIC_LITERALS, 501 identifiers=klass._IDENTIFIERS, 502 identifier_escapes=klass._IDENTIFIER_ESCAPES, 503 string_escapes=klass._STRING_ESCAPES, 504 quotes=klass._QUOTES, 505 format_strings={ 506 k: (v1, _TOKEN_TYPE_TO_INDEX[v2]) 507 for k, (v1, v2) in klass._FORMAT_STRINGS.items() 508 }, 509 has_bit_strings=bool(klass.BIT_STRINGS), 510 has_hex_strings=bool(klass.HEX_STRINGS), 511 comments=klass._COMMENTS, 512 var_single_tokens=klass.VAR_SINGLE_TOKENS, 513 commands={_TOKEN_TYPE_TO_INDEX[v] for v in klass.COMMANDS}, 514 command_prefix_tokens={ 515 _TOKEN_TYPE_TO_INDEX[v] for v in klass.COMMAND_PREFIX_TOKENS 516 }, 517 heredoc_tag_is_identifier=klass.HEREDOC_TAG_IS_IDENTIFIER, 518 ) 519 token_types = RsTokenTypeSettings( 520 bit_string=_TOKEN_TYPE_TO_INDEX[TokenType.BIT_STRING], 521 break_=_TOKEN_TYPE_TO_INDEX[TokenType.BREAK], 522 dcolon=_TOKEN_TYPE_TO_INDEX[TokenType.DCOLON], 523 heredoc_string=_TOKEN_TYPE_TO_INDEX[TokenType.HEREDOC_STRING], 524 hex_string=_TOKEN_TYPE_TO_INDEX[TokenType.HEX_STRING], 525 identifier=_TOKEN_TYPE_TO_INDEX[TokenType.IDENTIFIER], 526 number=_TOKEN_TYPE_TO_INDEX[TokenType.NUMBER], 527 parameter=_TOKEN_TYPE_TO_INDEX[TokenType.PARAMETER], 528 semicolon=_TOKEN_TYPE_TO_INDEX[TokenType.SEMICOLON], 529 string=_TOKEN_TYPE_TO_INDEX[TokenType.STRING], 530 var=_TOKEN_TYPE_TO_INDEX[TokenType.VAR], 531 heredoc_string_alternative=_TOKEN_TYPE_TO_INDEX[klass.HEREDOC_STRING_ALTERNATIVE], 532 ) 533 klass._RS_TOKENIZER = RsTokenizer(settings, token_types) 534 else: 535 klass._RS_TOKENIZER = None 536 537 return klass 538 539 540class Tokenizer(metaclass=_Tokenizer): 541 SINGLE_TOKENS = { 542 "(": TokenType.L_PAREN, 543 ")": TokenType.R_PAREN, 544 "[": TokenType.L_BRACKET, 545 "]": TokenType.R_BRACKET, 546 "{": TokenType.L_BRACE, 547 "}": TokenType.R_BRACE, 548 "&": TokenType.AMP, 549 "^": TokenType.CARET, 550 ":": TokenType.COLON, 551 ",": TokenType.COMMA, 552 ".": TokenType.DOT, 553 "-": TokenType.DASH, 554 "=": TokenType.EQ, 555 ">": TokenType.GT, 556 "<": TokenType.LT, 557 "%": TokenType.MOD, 558 "!": TokenType.NOT, 559 "|": TokenType.PIPE, 560 "+": TokenType.PLUS, 561 ";": TokenType.SEMICOLON, 562 "/": TokenType.SLASH, 563 "\\": TokenType.BACKSLASH, 564 "*": TokenType.STAR, 565 "~": TokenType.TILDA, 566 "?": TokenType.PLACEHOLDER, 567 "@": TokenType.PARAMETER, 568 # used for breaking a var like x'y' but nothing else 569 # the token type doesn't matter 570 "'": TokenType.QUOTE, 571 "`": TokenType.IDENTIFIER, 572 '"': TokenType.IDENTIFIER, 573 "#": TokenType.HASH, 574 } 575 576 BIT_STRINGS: t.List[str | t.Tuple[str, str]] = [] 577 BYTE_STRINGS: t.List[str | t.Tuple[str, str]] = [] 578 HEX_STRINGS: t.List[str | t.Tuple[str, str]] = [] 579 RAW_STRINGS: t.List[str | t.Tuple[str, str]] = [] 580 HEREDOC_STRINGS: t.List[str | t.Tuple[str, str]] = [] 581 UNICODE_STRINGS: t.List[str | t.Tuple[str, str]] = [] 582 IDENTIFIERS: t.List[str | t.Tuple[str, str]] = ['"'] 583 IDENTIFIER_ESCAPES = ['"'] 584 QUOTES: t.List[t.Tuple[str, str] | str] = ["'"] 585 STRING_ESCAPES = ["'"] 586 VAR_SINGLE_TOKENS: t.Set[str] = set() 587 588 # Whether the heredoc tags follow the same lexical rules as unquoted identifiers 589 HEREDOC_TAG_IS_IDENTIFIER = False 590 591 # Token that we'll generate as a fallback if the heredoc prefix doesn't correspond to a heredoc 592 HEREDOC_STRING_ALTERNATIVE = TokenType.VAR 593 594 # Autofilled 595 _COMMENTS: t.Dict[str, str] = {} 596 _FORMAT_STRINGS: t.Dict[str, t.Tuple[str, TokenType]] = {} 597 _IDENTIFIERS: t.Dict[str, str] = {} 598 _IDENTIFIER_ESCAPES: t.Set[str] = set() 599 _QUOTES: t.Dict[str, str] = {} 600 _STRING_ESCAPES: t.Set[str] = set() 601 _KEYWORD_TRIE: t.Dict = {} 602 _RS_TOKENIZER: t.Optional[t.Any] = None 603 604 KEYWORDS: t.Dict[str, TokenType] = { 605 **{f"{{%{postfix}": TokenType.BLOCK_START for postfix in ("", "+", "-")}, 606 **{f"{prefix}%}}": TokenType.BLOCK_END for prefix in ("", "+", "-")}, 607 **{f"{{{{{postfix}": TokenType.BLOCK_START for postfix in ("+", "-")}, 608 **{f"{prefix}}}}}": TokenType.BLOCK_END for prefix in ("+", "-")}, 609 "/*+": TokenType.HINT, 610 "==": TokenType.EQ, 611 "::": TokenType.DCOLON, 612 "||": TokenType.DPIPE, 613 ">=": TokenType.GTE, 614 "<=": TokenType.LTE, 615 "<>": TokenType.NEQ, 616 "!=": TokenType.NEQ, 617 ":=": TokenType.COLON_EQ, 618 "<=>": TokenType.NULLSAFE_EQ, 619 "->": TokenType.ARROW, 620 "->>": TokenType.DARROW, 621 "=>": TokenType.FARROW, 622 "#>": TokenType.HASH_ARROW, 623 "#>>": TokenType.DHASH_ARROW, 624 "<->": TokenType.LR_ARROW, 625 "&&": TokenType.DAMP, 626 "??": TokenType.DQMARK, 627 "ALL": TokenType.ALL, 628 "ALWAYS": TokenType.ALWAYS, 629 "AND": TokenType.AND, 630 "ANTI": TokenType.ANTI, 631 "ANY": TokenType.ANY, 632 "ASC": TokenType.ASC, 633 "AS": TokenType.ALIAS, 634 "ASOF": TokenType.ASOF, 635 "AUTOINCREMENT": TokenType.AUTO_INCREMENT, 636 "AUTO_INCREMENT": TokenType.AUTO_INCREMENT, 637 "BEGIN": TokenType.BEGIN, 638 "BETWEEN": TokenType.BETWEEN, 639 "CACHE": TokenType.CACHE, 640 "UNCACHE": TokenType.UNCACHE, 641 "CASE": TokenType.CASE, 642 "CHARACTER SET": TokenType.CHARACTER_SET, 643 "CLUSTER BY": TokenType.CLUSTER_BY, 644 "COLLATE": TokenType.COLLATE, 645 "COLUMN": TokenType.COLUMN, 646 "COMMIT": TokenType.COMMIT, 647 "CONNECT BY": TokenType.CONNECT_BY, 648 "CONSTRAINT": TokenType.CONSTRAINT, 649 "CREATE": TokenType.CREATE, 650 "CROSS": TokenType.CROSS, 651 "CUBE": TokenType.CUBE, 652 "CURRENT_DATE": TokenType.CURRENT_DATE, 653 "CURRENT_TIME": TokenType.CURRENT_TIME, 654 "CURRENT_TIMESTAMP": TokenType.CURRENT_TIMESTAMP, 655 "CURRENT_USER": TokenType.CURRENT_USER, 656 "DATABASE": TokenType.DATABASE, 657 "DEFAULT": TokenType.DEFAULT, 658 "DELETE": TokenType.DELETE, 659 "DESC": TokenType.DESC, 660 "DESCRIBE": TokenType.DESCRIBE, 661 "DISTINCT": TokenType.DISTINCT, 662 "DISTRIBUTE BY": TokenType.DISTRIBUTE_BY, 663 "DIV": TokenType.DIV, 664 "DROP": TokenType.DROP, 665 "ELSE": TokenType.ELSE, 666 "END": TokenType.END, 667 "ENUM": TokenType.ENUM, 668 "ESCAPE": TokenType.ESCAPE, 669 "EXCEPT": TokenType.EXCEPT, 670 "EXECUTE": TokenType.EXECUTE, 671 "EXISTS": TokenType.EXISTS, 672 "FALSE": TokenType.FALSE, 673 "FETCH": TokenType.FETCH, 674 "FILTER": TokenType.FILTER, 675 "FIRST": TokenType.FIRST, 676 "FULL": TokenType.FULL, 677 "FUNCTION": TokenType.FUNCTION, 678 "FOR": TokenType.FOR, 679 "FOREIGN KEY": TokenType.FOREIGN_KEY, 680 "FORMAT": TokenType.FORMAT, 681 "FROM": TokenType.FROM, 682 "GEOGRAPHY": TokenType.GEOGRAPHY, 683 "GEOMETRY": TokenType.GEOMETRY, 684 "GLOB": TokenType.GLOB, 685 "GROUP BY": TokenType.GROUP_BY, 686 "GROUPING SETS": TokenType.GROUPING_SETS, 687 "HAVING": TokenType.HAVING, 688 "ILIKE": TokenType.ILIKE, 689 "IN": TokenType.IN, 690 "INDEX": TokenType.INDEX, 691 "INET": TokenType.INET, 692 "INNER": TokenType.INNER, 693 "INSERT": TokenType.INSERT, 694 "INTERVAL": TokenType.INTERVAL, 695 "INTERSECT": TokenType.INTERSECT, 696 "INTO": TokenType.INTO, 697 "IS": TokenType.IS, 698 "ISNULL": TokenType.ISNULL, 699 "JOIN": TokenType.JOIN, 700 "KEEP": TokenType.KEEP, 701 "KILL": TokenType.KILL, 702 "LATERAL": TokenType.LATERAL, 703 "LEFT": TokenType.LEFT, 704 "LIKE": TokenType.LIKE, 705 "LIMIT": TokenType.LIMIT, 706 "LOAD": TokenType.LOAD, 707 "LOCK": TokenType.LOCK, 708 "MERGE": TokenType.MERGE, 709 "NATURAL": TokenType.NATURAL, 710 "NEXT": TokenType.NEXT, 711 "NOT": TokenType.NOT, 712 "NOTNULL": TokenType.NOTNULL, 713 "NULL": TokenType.NULL, 714 "OBJECT": TokenType.OBJECT, 715 "OFFSET": TokenType.OFFSET, 716 "ON": TokenType.ON, 717 "OR": TokenType.OR, 718 "XOR": TokenType.XOR, 719 "ORDER BY": TokenType.ORDER_BY, 720 "ORDINALITY": TokenType.ORDINALITY, 721 "OUTER": TokenType.OUTER, 722 "OVER": TokenType.OVER, 723 "OVERLAPS": TokenType.OVERLAPS, 724 "OVERWRITE": TokenType.OVERWRITE, 725 "PARTITION": TokenType.PARTITION, 726 "PARTITION BY": TokenType.PARTITION_BY, 727 "PARTITIONED BY": TokenType.PARTITION_BY, 728 "PARTITIONED_BY": TokenType.PARTITION_BY, 729 "PERCENT": TokenType.PERCENT, 730 "PIVOT": TokenType.PIVOT, 731 "PRAGMA": TokenType.PRAGMA, 732 "PRIMARY KEY": TokenType.PRIMARY_KEY, 733 "PROCEDURE": TokenType.PROCEDURE, 734 "QUALIFY": TokenType.QUALIFY, 735 "RANGE": TokenType.RANGE, 736 "RECURSIVE": TokenType.RECURSIVE, 737 "REGEXP": TokenType.RLIKE, 738 "REPLACE": TokenType.REPLACE, 739 "RETURNING": TokenType.RETURNING, 740 "REFERENCES": TokenType.REFERENCES, 741 "RIGHT": TokenType.RIGHT, 742 "RLIKE": TokenType.RLIKE, 743 "ROLLBACK": TokenType.ROLLBACK, 744 "ROLLUP": TokenType.ROLLUP, 745 "ROW": TokenType.ROW, 746 "ROWS": TokenType.ROWS, 747 "SCHEMA": TokenType.SCHEMA, 748 "SELECT": TokenType.SELECT, 749 "SEMI": TokenType.SEMI, 750 "SET": TokenType.SET, 751 "SETTINGS": TokenType.SETTINGS, 752 "SHOW": TokenType.SHOW, 753 "SIMILAR TO": TokenType.SIMILAR_TO, 754 "SOME": TokenType.SOME, 755 "SORT BY": TokenType.SORT_BY, 756 "START WITH": TokenType.START_WITH, 757 "TABLE": TokenType.TABLE, 758 "TABLESAMPLE": TokenType.TABLE_SAMPLE, 759 "TEMP": TokenType.TEMPORARY, 760 "TEMPORARY": TokenType.TEMPORARY, 761 "THEN": TokenType.THEN, 762 "TRUE": TokenType.TRUE, 763 "TRUNCATE": TokenType.TRUNCATE, 764 "UNION": TokenType.UNION, 765 "UNKNOWN": TokenType.UNKNOWN, 766 "UNNEST": TokenType.UNNEST, 767 "UNPIVOT": TokenType.UNPIVOT, 768 "UPDATE": TokenType.UPDATE, 769 "USE": TokenType.USE, 770 "USING": TokenType.USING, 771 "UUID": TokenType.UUID, 772 "VALUES": TokenType.VALUES, 773 "VIEW": TokenType.VIEW, 774 "VOLATILE": TokenType.VOLATILE, 775 "WHEN": TokenType.WHEN, 776 "WHERE": TokenType.WHERE, 777 "WINDOW": TokenType.WINDOW, 778 "WITH": TokenType.WITH, 779 "APPLY": TokenType.APPLY, 780 "ARRAY": TokenType.ARRAY, 781 "BIT": TokenType.BIT, 782 "BOOL": TokenType.BOOLEAN, 783 "BOOLEAN": TokenType.BOOLEAN, 784 "BYTE": TokenType.TINYINT, 785 "MEDIUMINT": TokenType.MEDIUMINT, 786 "INT1": TokenType.TINYINT, 787 "TINYINT": TokenType.TINYINT, 788 "INT16": TokenType.SMALLINT, 789 "SHORT": TokenType.SMALLINT, 790 "SMALLINT": TokenType.SMALLINT, 791 "INT128": TokenType.INT128, 792 "HUGEINT": TokenType.INT128, 793 "INT2": TokenType.SMALLINT, 794 "INTEGER": TokenType.INT, 795 "INT": TokenType.INT, 796 "INT4": TokenType.INT, 797 "INT32": TokenType.INT, 798 "INT64": TokenType.BIGINT, 799 "LONG": TokenType.BIGINT, 800 "BIGINT": TokenType.BIGINT, 801 "INT8": TokenType.TINYINT, 802 "DEC": TokenType.DECIMAL, 803 "DECIMAL": TokenType.DECIMAL, 804 "BIGDECIMAL": TokenType.BIGDECIMAL, 805 "BIGNUMERIC": TokenType.BIGDECIMAL, 806 "MAP": TokenType.MAP, 807 "NULLABLE": TokenType.NULLABLE, 808 "NUMBER": TokenType.DECIMAL, 809 "NUMERIC": TokenType.DECIMAL, 810 "FIXED": TokenType.DECIMAL, 811 "REAL": TokenType.FLOAT, 812 "FLOAT": TokenType.FLOAT, 813 "FLOAT4": TokenType.FLOAT, 814 "FLOAT8": TokenType.DOUBLE, 815 "DOUBLE": TokenType.DOUBLE, 816 "DOUBLE PRECISION": TokenType.DOUBLE, 817 "JSON": TokenType.JSON, 818 "CHAR": TokenType.CHAR, 819 "CHARACTER": TokenType.CHAR, 820 "NCHAR": TokenType.NCHAR, 821 "VARCHAR": TokenType.VARCHAR, 822 "VARCHAR2": TokenType.VARCHAR, 823 "NVARCHAR": TokenType.NVARCHAR, 824 "NVARCHAR2": TokenType.NVARCHAR, 825 "BPCHAR": TokenType.BPCHAR, 826 "STR": TokenType.TEXT, 827 "STRING": TokenType.TEXT, 828 "TEXT": TokenType.TEXT, 829 "LONGTEXT": TokenType.LONGTEXT, 830 "MEDIUMTEXT": TokenType.MEDIUMTEXT, 831 "TINYTEXT": TokenType.TINYTEXT, 832 "CLOB": TokenType.TEXT, 833 "LONGVARCHAR": TokenType.TEXT, 834 "BINARY": TokenType.BINARY, 835 "BLOB": TokenType.VARBINARY, 836 "LONGBLOB": TokenType.LONGBLOB, 837 "MEDIUMBLOB": TokenType.MEDIUMBLOB, 838 "TINYBLOB": TokenType.TINYBLOB, 839 "BYTEA": TokenType.VARBINARY, 840 "VARBINARY": TokenType.VARBINARY, 841 "TIME": TokenType.TIME, 842 "TIMETZ": TokenType.TIMETZ, 843 "TIMESTAMP": TokenType.TIMESTAMP, 844 "TIMESTAMPTZ": TokenType.TIMESTAMPTZ, 845 "TIMESTAMPLTZ": TokenType.TIMESTAMPLTZ, 846 "DATE": TokenType.DATE, 847 "DATETIME": TokenType.DATETIME, 848 "INT4RANGE": TokenType.INT4RANGE, 849 "INT4MULTIRANGE": TokenType.INT4MULTIRANGE, 850 "INT8RANGE": TokenType.INT8RANGE, 851 "INT8MULTIRANGE": TokenType.INT8MULTIRANGE, 852 "NUMRANGE": TokenType.NUMRANGE, 853 "NUMMULTIRANGE": TokenType.NUMMULTIRANGE, 854 "TSRANGE": TokenType.TSRANGE, 855 "TSMULTIRANGE": TokenType.TSMULTIRANGE, 856 "TSTZRANGE": TokenType.TSTZRANGE, 857 "TSTZMULTIRANGE": TokenType.TSTZMULTIRANGE, 858 "DATERANGE": TokenType.DATERANGE, 859 "DATEMULTIRANGE": TokenType.DATEMULTIRANGE, 860 "UNIQUE": TokenType.UNIQUE, 861 "STRUCT": TokenType.STRUCT, 862 "SEQUENCE": TokenType.SEQUENCE, 863 "VARIANT": TokenType.VARIANT, 864 "ALTER": TokenType.ALTER, 865 "ANALYZE": TokenType.COMMAND, 866 "CALL": TokenType.COMMAND, 867 "COMMENT": TokenType.COMMENT, 868 "COPY": TokenType.COMMAND, 869 "EXPLAIN": TokenType.COMMAND, 870 "GRANT": TokenType.COMMAND, 871 "OPTIMIZE": TokenType.COMMAND, 872 "PREPARE": TokenType.COMMAND, 873 "VACUUM": TokenType.COMMAND, 874 "USER-DEFINED": TokenType.USERDEFINED, 875 "FOR VERSION": TokenType.VERSION_SNAPSHOT, 876 "FOR TIMESTAMP": TokenType.TIMESTAMP_SNAPSHOT, 877 } 878 879 WHITE_SPACE: t.Dict[t.Optional[str], TokenType] = { 880 " ": TokenType.SPACE, 881 "\t": TokenType.SPACE, 882 "\n": TokenType.BREAK, 883 "\r": TokenType.BREAK, 884 } 885 886 COMMANDS = { 887 TokenType.COMMAND, 888 TokenType.EXECUTE, 889 TokenType.FETCH, 890 TokenType.SHOW, 891 } 892 893 COMMAND_PREFIX_TOKENS = {TokenType.SEMICOLON, TokenType.BEGIN} 894 895 # handle numeric literals like in hive (3L = BIGINT) 896 NUMERIC_LITERALS: t.Dict[str, str] = {} 897 898 COMMENTS = ["--", ("/*", "*/")] 899 900 __slots__ = ( 901 "sql", 902 "size", 903 "tokens", 904 "dialect", 905 "_start", 906 "_current", 907 "_line", 908 "_col", 909 "_comments", 910 "_char", 911 "_end", 912 "_peek", 913 "_prev_token_line", 914 "_rs_dialect_settings", 915 ) 916 917 def __init__(self, dialect: DialectType = None) -> None: 918 from sqlglot.dialects import Dialect 919 920 self.dialect = Dialect.get_or_raise(dialect) 921 922 if USE_RS_TOKENIZER: 923 self._rs_dialect_settings = RsTokenizerDialectSettings( 924 escape_sequences=self.dialect.ESCAPE_SEQUENCES, 925 identifiers_can_start_with_digit=self.dialect.IDENTIFIERS_CAN_START_WITH_DIGIT, 926 ) 927 928 self.reset() 929 930 def reset(self) -> None: 931 self.sql = "" 932 self.size = 0 933 self.tokens: t.List[Token] = [] 934 self._start = 0 935 self._current = 0 936 self._line = 1 937 self._col = 0 938 self._comments: t.List[str] = [] 939 940 self._char = "" 941 self._end = False 942 self._peek = "" 943 self._prev_token_line = -1 944 945 def tokenize(self, sql: str) -> t.List[Token]: 946 """Returns a list of tokens corresponding to the SQL string `sql`.""" 947 if USE_RS_TOKENIZER: 948 return self.tokenize_rs(sql) 949 950 self.reset() 951 self.sql = sql 952 self.size = len(sql) 953 954 try: 955 self._scan() 956 except Exception as e: 957 start = max(self._current - 50, 0) 958 end = min(self._current + 50, self.size - 1) 959 context = self.sql[start:end] 960 raise TokenError(f"Error tokenizing '{context}'") from e 961 962 return self.tokens 963 964 def _scan(self, until: t.Optional[t.Callable] = None) -> None: 965 while self.size and not self._end: 966 current = self._current 967 968 # skip spaces inline rather than iteratively call advance() 969 # for performance reasons 970 while current < self.size: 971 char = self.sql[current] 972 973 if char.isspace() and (char == " " or char == "\t"): 974 current += 1 975 else: 976 break 977 978 n = current - self._current 979 self._start = current 980 self._advance(n if n > 1 else 1) 981 982 if self._char is None: 983 break 984 985 if not self._char.isspace(): 986 if self._char.isdigit(): 987 self._scan_number() 988 elif self._char in self._IDENTIFIERS: 989 self._scan_identifier(self._IDENTIFIERS[self._char]) 990 else: 991 self._scan_keywords() 992 993 if until and until(): 994 break 995 996 if self.tokens and self._comments: 997 self.tokens[-1].comments.extend(self._comments) 998 999 def _chars(self, size: int) -> str: 1000 if size == 1: 1001 return self._char 1002 1003 start = self._current - 1 1004 end = start + size 1005 1006 return self.sql[start:end] if end <= self.size else "" 1007 1008 def _advance(self, i: int = 1, alnum: bool = False) -> None: 1009 if self.WHITE_SPACE.get(self._char) is TokenType.BREAK: 1010 # Ensures we don't count an extra line if we get a \r\n line break sequence 1011 if self._char == "\r" and self._peek == "\n": 1012 i = 2 1013 self._start += 1 1014 1015 self._col = 1 1016 self._line += 1 1017 else: 1018 self._col += i 1019 1020 self._current += i 1021 self._end = self._current >= self.size 1022 self._char = self.sql[self._current - 1] 1023 self._peek = "" if self._end else self.sql[self._current] 1024 1025 if alnum and self._char.isalnum(): 1026 # Here we use local variables instead of attributes for better performance 1027 _col = self._col 1028 _current = self._current 1029 _end = self._end 1030 _peek = self._peek 1031 1032 while _peek.isalnum(): 1033 _col += 1 1034 _current += 1 1035 _end = _current >= self.size 1036 _peek = "" if _end else self.sql[_current] 1037 1038 self._col = _col 1039 self._current = _current 1040 self._end = _end 1041 self._peek = _peek 1042 self._char = self.sql[_current - 1] 1043 1044 @property 1045 def _text(self) -> str: 1046 return self.sql[self._start : self._current] 1047 1048 def _add(self, token_type: TokenType, text: t.Optional[str] = None) -> None: 1049 self._prev_token_line = self._line 1050 1051 if self._comments and token_type == TokenType.SEMICOLON and self.tokens: 1052 self.tokens[-1].comments.extend(self._comments) 1053 self._comments = [] 1054 1055 self.tokens.append( 1056 Token( 1057 token_type, 1058 text=self._text if text is None else text, 1059 line=self._line, 1060 col=self._col, 1061 start=self._start, 1062 end=self._current - 1, 1063 comments=self._comments, 1064 ) 1065 ) 1066 self._comments = [] 1067 1068 # If we have either a semicolon or a begin token before the command's token, we'll parse 1069 # whatever follows the command's token as a string 1070 if ( 1071 token_type in self.COMMANDS 1072 and self._peek != ";" 1073 and (len(self.tokens) == 1 or self.tokens[-2].token_type in self.COMMAND_PREFIX_TOKENS) 1074 ): 1075 start = self._current 1076 tokens = len(self.tokens) 1077 self._scan(lambda: self._peek == ";") 1078 self.tokens = self.tokens[:tokens] 1079 text = self.sql[start : self._current].strip() 1080 if text: 1081 self._add(TokenType.STRING, text) 1082 1083 def _scan_keywords(self) -> None: 1084 size = 0 1085 word = None 1086 chars = self._text 1087 char = chars 1088 prev_space = False 1089 skip = False 1090 trie = self._KEYWORD_TRIE 1091 single_token = char in self.SINGLE_TOKENS 1092 1093 while chars: 1094 if skip: 1095 result = TrieResult.PREFIX 1096 else: 1097 result, trie = in_trie(trie, char.upper()) 1098 1099 if result == TrieResult.FAILED: 1100 break 1101 if result == TrieResult.EXISTS: 1102 word = chars 1103 1104 end = self._current + size 1105 size += 1 1106 1107 if end < self.size: 1108 char = self.sql[end] 1109 single_token = single_token or char in self.SINGLE_TOKENS 1110 is_space = char.isspace() 1111 1112 if not is_space or not prev_space: 1113 if is_space: 1114 char = " " 1115 chars += char 1116 prev_space = is_space 1117 skip = False 1118 else: 1119 skip = True 1120 else: 1121 char = "" 1122 break 1123 1124 if word: 1125 if self._scan_string(word): 1126 return 1127 if self._scan_comment(word): 1128 return 1129 if prev_space or single_token or not char: 1130 self._advance(size - 1) 1131 word = word.upper() 1132 self._add(self.KEYWORDS[word], text=word) 1133 return 1134 1135 if self._char in self.SINGLE_TOKENS: 1136 self._add(self.SINGLE_TOKENS[self._char], text=self._char) 1137 return 1138 1139 self._scan_var() 1140 1141 def _scan_comment(self, comment_start: str) -> bool: 1142 if comment_start not in self._COMMENTS: 1143 return False 1144 1145 comment_start_line = self._line 1146 comment_start_size = len(comment_start) 1147 comment_end = self._COMMENTS[comment_start] 1148 1149 if comment_end: 1150 # Skip the comment's start delimiter 1151 self._advance(comment_start_size) 1152 1153 comment_end_size = len(comment_end) 1154 while not self._end and self._chars(comment_end_size) != comment_end: 1155 self._advance(alnum=True) 1156 1157 self._comments.append(self._text[comment_start_size : -comment_end_size + 1]) 1158 self._advance(comment_end_size - 1) 1159 else: 1160 while not self._end and self.WHITE_SPACE.get(self._peek) is not TokenType.BREAK: 1161 self._advance(alnum=True) 1162 self._comments.append(self._text[comment_start_size:]) 1163 1164 # Leading comment is attached to the succeeding token, whilst trailing comment to the preceding. 1165 # Multiple consecutive comments are preserved by appending them to the current comments list. 1166 if comment_start_line == self._prev_token_line: 1167 self.tokens[-1].comments.extend(self._comments) 1168 self._comments = [] 1169 self._prev_token_line = self._line 1170 1171 return True 1172 1173 def _scan_number(self) -> None: 1174 if self._char == "0": 1175 peek = self._peek.upper() 1176 if peek == "B": 1177 return self._scan_bits() if self.BIT_STRINGS else self._add(TokenType.NUMBER) 1178 elif peek == "X": 1179 return self._scan_hex() if self.HEX_STRINGS else self._add(TokenType.NUMBER) 1180 1181 decimal = False 1182 scientific = 0 1183 1184 while True: 1185 if self._peek.isdigit(): 1186 self._advance() 1187 elif self._peek == "." and not decimal: 1188 decimal = True 1189 self._advance() 1190 elif self._peek in ("-", "+") and scientific == 1: 1191 scientific += 1 1192 self._advance() 1193 elif self._peek.upper() == "E" and not scientific: 1194 scientific += 1 1195 self._advance() 1196 elif self._peek.isidentifier(): 1197 number_text = self._text 1198 literal = "" 1199 1200 while self._peek.strip() and self._peek not in self.SINGLE_TOKENS: 1201 literal += self._peek 1202 self._advance() 1203 1204 token_type = self.KEYWORDS.get(self.NUMERIC_LITERALS.get(literal.upper(), "")) 1205 1206 if token_type: 1207 self._add(TokenType.NUMBER, number_text) 1208 self._add(TokenType.DCOLON, "::") 1209 return self._add(token_type, literal) 1210 elif self.dialect.IDENTIFIERS_CAN_START_WITH_DIGIT: 1211 return self._add(TokenType.VAR) 1212 1213 self._advance(-len(literal)) 1214 return self._add(TokenType.NUMBER, number_text) 1215 else: 1216 return self._add(TokenType.NUMBER) 1217 1218 def _scan_bits(self) -> None: 1219 self._advance() 1220 value = self._extract_value() 1221 try: 1222 # If `value` can't be converted to a binary, fallback to tokenizing it as an identifier 1223 int(value, 2) 1224 self._add(TokenType.BIT_STRING, value[2:]) # Drop the 0b 1225 except ValueError: 1226 self._add(TokenType.IDENTIFIER) 1227 1228 def _scan_hex(self) -> None: 1229 self._advance() 1230 value = self._extract_value() 1231 try: 1232 # If `value` can't be converted to a hex, fallback to tokenizing it as an identifier 1233 int(value, 16) 1234 self._add(TokenType.HEX_STRING, value[2:]) # Drop the 0x 1235 except ValueError: 1236 self._add(TokenType.IDENTIFIER) 1237 1238 def _extract_value(self) -> str: 1239 while True: 1240 char = self._peek.strip() 1241 if char and char not in self.SINGLE_TOKENS: 1242 self._advance(alnum=True) 1243 else: 1244 break 1245 1246 return self._text 1247 1248 def _scan_string(self, start: str) -> bool: 1249 base = None 1250 token_type = TokenType.STRING 1251 1252 if start in self._QUOTES: 1253 end = self._QUOTES[start] 1254 elif start in self._FORMAT_STRINGS: 1255 end, token_type = self._FORMAT_STRINGS[start] 1256 1257 if token_type == TokenType.HEX_STRING: 1258 base = 16 1259 elif token_type == TokenType.BIT_STRING: 1260 base = 2 1261 elif token_type == TokenType.HEREDOC_STRING: 1262 if ( 1263 self.HEREDOC_TAG_IS_IDENTIFIER 1264 and not self._peek.isidentifier() 1265 and not self._peek == end 1266 ): 1267 if self.HEREDOC_STRING_ALTERNATIVE != token_type.VAR: 1268 self._add(self.HEREDOC_STRING_ALTERNATIVE) 1269 else: 1270 self._scan_var() 1271 1272 return True 1273 1274 self._advance() 1275 tag = "" if self._char == end else self._extract_string(end) 1276 end = f"{start}{tag}{end}" 1277 else: 1278 return False 1279 1280 self._advance(len(start)) 1281 text = self._extract_string(end) 1282 1283 if base: 1284 try: 1285 int(text, base) 1286 except Exception: 1287 raise TokenError( 1288 f"Numeric string contains invalid characters from {self._line}:{self._start}" 1289 ) 1290 1291 self._add(token_type, text) 1292 return True 1293 1294 def _scan_identifier(self, identifier_end: str) -> None: 1295 self._advance() 1296 text = self._extract_string(identifier_end, self._IDENTIFIER_ESCAPES) 1297 self._add(TokenType.IDENTIFIER, text) 1298 1299 def _scan_var(self) -> None: 1300 while True: 1301 char = self._peek.strip() 1302 if char and (char in self.VAR_SINGLE_TOKENS or char not in self.SINGLE_TOKENS): 1303 self._advance(alnum=True) 1304 else: 1305 break 1306 1307 self._add( 1308 TokenType.VAR 1309 if self.tokens and self.tokens[-1].token_type == TokenType.PARAMETER 1310 else self.KEYWORDS.get(self._text.upper(), TokenType.VAR) 1311 ) 1312 1313 def _extract_string(self, delimiter: str, escapes=None) -> str: 1314 text = "" 1315 delim_size = len(delimiter) 1316 escapes = self._STRING_ESCAPES if escapes is None else escapes 1317 1318 while True: 1319 if ( 1320 self._char in escapes 1321 and (self._peek == delimiter or self._peek in escapes) 1322 and (self._char not in self._QUOTES or self._char == self._peek) 1323 ): 1324 if self._peek == delimiter: 1325 text += self._peek 1326 else: 1327 text += self._char + self._peek 1328 1329 if self._current + 1 < self.size: 1330 self._advance(2) 1331 else: 1332 raise TokenError(f"Missing {delimiter} from {self._line}:{self._current}") 1333 else: 1334 if self._chars(delim_size) == delimiter: 1335 if delim_size > 1: 1336 self._advance(delim_size - 1) 1337 break 1338 1339 if self._end: 1340 raise TokenError(f"Missing {delimiter} from {self._line}:{self._start}") 1341 1342 if ( 1343 self.dialect.ESCAPE_SEQUENCES 1344 and self._peek 1345 and self._char in self.STRING_ESCAPES 1346 ): 1347 escaped_sequence = self.dialect.ESCAPE_SEQUENCES.get(self._char + self._peek) 1348 if escaped_sequence: 1349 self._advance(2) 1350 text += escaped_sequence 1351 continue 1352 1353 current = self._current - 1 1354 self._advance(alnum=True) 1355 text += self.sql[current : self._current - 1] 1356 1357 return text 1358 1359 def tokenize_rs(self, sql: str) -> t.List[Token]: 1360 if not self._RS_TOKENIZER: 1361 raise SqlglotError("Rust tokenizer is not available") 1362 1363 try: 1364 tokens = self._RS_TOKENIZER.tokenize(sql, self._rs_dialect_settings) 1365 for token in tokens: 1366 token.token_type = _ALL_TOKEN_TYPES[token.token_type_index] 1367 return tokens 1368 except Exception as e: 1369 raise TokenError(str(e))
29class TokenType(AutoName): 30 L_PAREN = auto() 31 R_PAREN = auto() 32 L_BRACKET = auto() 33 R_BRACKET = auto() 34 L_BRACE = auto() 35 R_BRACE = auto() 36 COMMA = auto() 37 DOT = auto() 38 DASH = auto() 39 PLUS = auto() 40 COLON = auto() 41 DCOLON = auto() 42 DQMARK = auto() 43 SEMICOLON = auto() 44 STAR = auto() 45 BACKSLASH = auto() 46 SLASH = auto() 47 LT = auto() 48 LTE = auto() 49 GT = auto() 50 GTE = auto() 51 NOT = auto() 52 EQ = auto() 53 NEQ = auto() 54 NULLSAFE_EQ = auto() 55 COLON_EQ = auto() 56 AND = auto() 57 OR = auto() 58 AMP = auto() 59 DPIPE = auto() 60 PIPE = auto() 61 PIPE_SLASH = auto() 62 DPIPE_SLASH = auto() 63 CARET = auto() 64 TILDA = auto() 65 ARROW = auto() 66 DARROW = auto() 67 FARROW = auto() 68 HASH = auto() 69 HASH_ARROW = auto() 70 DHASH_ARROW = auto() 71 LR_ARROW = auto() 72 DAT = auto() 73 LT_AT = auto() 74 AT_GT = auto() 75 DOLLAR = auto() 76 PARAMETER = auto() 77 SESSION_PARAMETER = auto() 78 DAMP = auto() 79 XOR = auto() 80 DSTAR = auto() 81 82 BLOCK_START = auto() 83 BLOCK_END = auto() 84 85 SPACE = auto() 86 BREAK = auto() 87 88 STRING = auto() 89 NUMBER = auto() 90 IDENTIFIER = auto() 91 DATABASE = auto() 92 COLUMN = auto() 93 COLUMN_DEF = auto() 94 SCHEMA = auto() 95 TABLE = auto() 96 VAR = auto() 97 BIT_STRING = auto() 98 HEX_STRING = auto() 99 BYTE_STRING = auto() 100 NATIONAL_STRING = auto() 101 RAW_STRING = auto() 102 HEREDOC_STRING = auto() 103 UNICODE_STRING = auto() 104 105 # types 106 BIT = auto() 107 BOOLEAN = auto() 108 TINYINT = auto() 109 UTINYINT = auto() 110 SMALLINT = auto() 111 USMALLINT = auto() 112 MEDIUMINT = auto() 113 UMEDIUMINT = auto() 114 INT = auto() 115 UINT = auto() 116 BIGINT = auto() 117 UBIGINT = auto() 118 INT128 = auto() 119 UINT128 = auto() 120 INT256 = auto() 121 UINT256 = auto() 122 FLOAT = auto() 123 DOUBLE = auto() 124 DECIMAL = auto() 125 UDECIMAL = auto() 126 BIGDECIMAL = auto() 127 CHAR = auto() 128 NCHAR = auto() 129 VARCHAR = auto() 130 NVARCHAR = auto() 131 BPCHAR = auto() 132 TEXT = auto() 133 MEDIUMTEXT = auto() 134 LONGTEXT = auto() 135 MEDIUMBLOB = auto() 136 LONGBLOB = auto() 137 TINYBLOB = auto() 138 TINYTEXT = auto() 139 NAME = auto() 140 BINARY = auto() 141 VARBINARY = auto() 142 JSON = auto() 143 JSONB = auto() 144 TIME = auto() 145 TIMETZ = auto() 146 TIMESTAMP = auto() 147 TIMESTAMPTZ = auto() 148 TIMESTAMPLTZ = auto() 149 TIMESTAMP_S = auto() 150 TIMESTAMP_MS = auto() 151 TIMESTAMP_NS = auto() 152 DATETIME = auto() 153 DATETIME64 = auto() 154 DATE = auto() 155 DATE32 = auto() 156 INT4RANGE = auto() 157 INT4MULTIRANGE = auto() 158 INT8RANGE = auto() 159 INT8MULTIRANGE = auto() 160 NUMRANGE = auto() 161 NUMMULTIRANGE = auto() 162 TSRANGE = auto() 163 TSMULTIRANGE = auto() 164 TSTZRANGE = auto() 165 TSTZMULTIRANGE = auto() 166 DATERANGE = auto() 167 DATEMULTIRANGE = auto() 168 UUID = auto() 169 GEOGRAPHY = auto() 170 NULLABLE = auto() 171 GEOMETRY = auto() 172 HLLSKETCH = auto() 173 HSTORE = auto() 174 SUPER = auto() 175 SERIAL = auto() 176 SMALLSERIAL = auto() 177 BIGSERIAL = auto() 178 XML = auto() 179 YEAR = auto() 180 UNIQUEIDENTIFIER = auto() 181 USERDEFINED = auto() 182 MONEY = auto() 183 SMALLMONEY = auto() 184 ROWVERSION = auto() 185 IMAGE = auto() 186 VARIANT = auto() 187 OBJECT = auto() 188 INET = auto() 189 IPADDRESS = auto() 190 IPPREFIX = auto() 191 IPV4 = auto() 192 IPV6 = auto() 193 ENUM = auto() 194 ENUM8 = auto() 195 ENUM16 = auto() 196 FIXEDSTRING = auto() 197 LOWCARDINALITY = auto() 198 NESTED = auto() 199 AGGREGATEFUNCTION = auto() 200 SIMPLEAGGREGATEFUNCTION = auto() 201 UNKNOWN = auto() 202 203 # keywords 204 ALIAS = auto() 205 ALTER = auto() 206 ALWAYS = auto() 207 ALL = auto() 208 ANTI = auto() 209 ANY = auto() 210 APPLY = auto() 211 ARRAY = auto() 212 ASC = auto() 213 ASOF = auto() 214 AUTO_INCREMENT = auto() 215 BEGIN = auto() 216 BETWEEN = auto() 217 CACHE = auto() 218 CASE = auto() 219 CHARACTER_SET = auto() 220 CLUSTER_BY = auto() 221 COLLATE = auto() 222 COMMAND = auto() 223 COMMENT = auto() 224 COMMIT = auto() 225 CONNECT_BY = auto() 226 CONSTRAINT = auto() 227 CREATE = auto() 228 CROSS = auto() 229 CUBE = auto() 230 CURRENT_DATE = auto() 231 CURRENT_DATETIME = auto() 232 CURRENT_TIME = auto() 233 CURRENT_TIMESTAMP = auto() 234 CURRENT_USER = auto() 235 DEFAULT = auto() 236 DELETE = auto() 237 DESC = auto() 238 DESCRIBE = auto() 239 DICTIONARY = auto() 240 DISTINCT = auto() 241 DISTRIBUTE_BY = auto() 242 DIV = auto() 243 DROP = auto() 244 ELSE = auto() 245 END = auto() 246 ESCAPE = auto() 247 EXCEPT = auto() 248 EXECUTE = auto() 249 EXISTS = auto() 250 FALSE = auto() 251 FETCH = auto() 252 FILTER = auto() 253 FINAL = auto() 254 FIRST = auto() 255 FOR = auto() 256 FORCE = auto() 257 FOREIGN_KEY = auto() 258 FORMAT = auto() 259 FROM = auto() 260 FULL = auto() 261 FUNCTION = auto() 262 GLOB = auto() 263 GLOBAL = auto() 264 GROUP_BY = auto() 265 GROUPING_SETS = auto() 266 HAVING = auto() 267 HINT = auto() 268 IGNORE = auto() 269 ILIKE = auto() 270 ILIKE_ANY = auto() 271 IN = auto() 272 INDEX = auto() 273 INNER = auto() 274 INSERT = auto() 275 INTERSECT = auto() 276 INTERVAL = auto() 277 INTO = auto() 278 INTRODUCER = auto() 279 IRLIKE = auto() 280 IS = auto() 281 ISNULL = auto() 282 JOIN = auto() 283 JOIN_MARKER = auto() 284 KEEP = auto() 285 KILL = auto() 286 LANGUAGE = auto() 287 LATERAL = auto() 288 LEFT = auto() 289 LIKE = auto() 290 LIKE_ANY = auto() 291 LIMIT = auto() 292 LOAD = auto() 293 LOCK = auto() 294 MAP = auto() 295 MATCH_RECOGNIZE = auto() 296 MEMBER_OF = auto() 297 MERGE = auto() 298 MOD = auto() 299 MODEL = auto() 300 NATURAL = auto() 301 NEXT = auto() 302 NOTNULL = auto() 303 NULL = auto() 304 OBJECT_IDENTIFIER = auto() 305 OFFSET = auto() 306 ON = auto() 307 ONLY = auto() 308 OPERATOR = auto() 309 ORDER_BY = auto() 310 ORDER_SIBLINGS_BY = auto() 311 ORDERED = auto() 312 ORDINALITY = auto() 313 OUTER = auto() 314 OVER = auto() 315 OVERLAPS = auto() 316 OVERWRITE = auto() 317 PARTITION = auto() 318 PARTITION_BY = auto() 319 PERCENT = auto() 320 PIVOT = auto() 321 PLACEHOLDER = auto() 322 POSITIONAL = auto() 323 PRAGMA = auto() 324 PREWHERE = auto() 325 PRIMARY_KEY = auto() 326 PROCEDURE = auto() 327 PROPERTIES = auto() 328 PSEUDO_TYPE = auto() 329 QUALIFY = auto() 330 QUOTE = auto() 331 RANGE = auto() 332 RECURSIVE = auto() 333 REFRESH = auto() 334 REPLACE = auto() 335 RETURNING = auto() 336 REFERENCES = auto() 337 RIGHT = auto() 338 RLIKE = auto() 339 ROLLBACK = auto() 340 ROLLUP = auto() 341 ROW = auto() 342 ROWS = auto() 343 SELECT = auto() 344 SEMI = auto() 345 SEPARATOR = auto() 346 SEQUENCE = auto() 347 SERDE_PROPERTIES = auto() 348 SET = auto() 349 SETTINGS = auto() 350 SHOW = auto() 351 SIMILAR_TO = auto() 352 SOME = auto() 353 SORT_BY = auto() 354 START_WITH = auto() 355 STORAGE_INTEGRATION = auto() 356 STRUCT = auto() 357 TABLE_SAMPLE = auto() 358 TEMPORARY = auto() 359 TOP = auto() 360 THEN = auto() 361 TRUE = auto() 362 TRUNCATE = auto() 363 UNCACHE = auto() 364 UNION = auto() 365 UNNEST = auto() 366 UNPIVOT = auto() 367 UPDATE = auto() 368 USE = auto() 369 USING = auto() 370 VALUES = auto() 371 VIEW = auto() 372 VOLATILE = auto() 373 WHEN = auto() 374 WHERE = auto() 375 WINDOW = auto() 376 WITH = auto() 377 UNIQUE = auto() 378 VERSION_SNAPSHOT = auto() 379 TIMESTAMP_SNAPSHOT = auto() 380 OPTION = auto()
An enumeration.
L_PAREN =
<TokenType.L_PAREN: 'L_PAREN'>
R_PAREN =
<TokenType.R_PAREN: 'R_PAREN'>
L_BRACKET =
<TokenType.L_BRACKET: 'L_BRACKET'>
R_BRACKET =
<TokenType.R_BRACKET: 'R_BRACKET'>
L_BRACE =
<TokenType.L_BRACE: 'L_BRACE'>
R_BRACE =
<TokenType.R_BRACE: 'R_BRACE'>
COMMA =
<TokenType.COMMA: 'COMMA'>
DOT =
<TokenType.DOT: 'DOT'>
DASH =
<TokenType.DASH: 'DASH'>
PLUS =
<TokenType.PLUS: 'PLUS'>
COLON =
<TokenType.COLON: 'COLON'>
DCOLON =
<TokenType.DCOLON: 'DCOLON'>
DQMARK =
<TokenType.DQMARK: 'DQMARK'>
SEMICOLON =
<TokenType.SEMICOLON: 'SEMICOLON'>
STAR =
<TokenType.STAR: 'STAR'>
BACKSLASH =
<TokenType.BACKSLASH: 'BACKSLASH'>
SLASH =
<TokenType.SLASH: 'SLASH'>
LT =
<TokenType.LT: 'LT'>
LTE =
<TokenType.LTE: 'LTE'>
GT =
<TokenType.GT: 'GT'>
GTE =
<TokenType.GTE: 'GTE'>
NOT =
<TokenType.NOT: 'NOT'>
EQ =
<TokenType.EQ: 'EQ'>
NEQ =
<TokenType.NEQ: 'NEQ'>
NULLSAFE_EQ =
<TokenType.NULLSAFE_EQ: 'NULLSAFE_EQ'>
COLON_EQ =
<TokenType.COLON_EQ: 'COLON_EQ'>
AND =
<TokenType.AND: 'AND'>
OR =
<TokenType.OR: 'OR'>
AMP =
<TokenType.AMP: 'AMP'>
DPIPE =
<TokenType.DPIPE: 'DPIPE'>
PIPE =
<TokenType.PIPE: 'PIPE'>
PIPE_SLASH =
<TokenType.PIPE_SLASH: 'PIPE_SLASH'>
DPIPE_SLASH =
<TokenType.DPIPE_SLASH: 'DPIPE_SLASH'>
CARET =
<TokenType.CARET: 'CARET'>
TILDA =
<TokenType.TILDA: 'TILDA'>
ARROW =
<TokenType.ARROW: 'ARROW'>
DARROW =
<TokenType.DARROW: 'DARROW'>
FARROW =
<TokenType.FARROW: 'FARROW'>
HASH =
<TokenType.HASH: 'HASH'>
HASH_ARROW =
<TokenType.HASH_ARROW: 'HASH_ARROW'>
DHASH_ARROW =
<TokenType.DHASH_ARROW: 'DHASH_ARROW'>
LR_ARROW =
<TokenType.LR_ARROW: 'LR_ARROW'>
DAT =
<TokenType.DAT: 'DAT'>
LT_AT =
<TokenType.LT_AT: 'LT_AT'>
AT_GT =
<TokenType.AT_GT: 'AT_GT'>
DOLLAR =
<TokenType.DOLLAR: 'DOLLAR'>
PARAMETER =
<TokenType.PARAMETER: 'PARAMETER'>
SESSION_PARAMETER =
<TokenType.SESSION_PARAMETER: 'SESSION_PARAMETER'>
DAMP =
<TokenType.DAMP: 'DAMP'>
XOR =
<TokenType.XOR: 'XOR'>
DSTAR =
<TokenType.DSTAR: 'DSTAR'>
BLOCK_START =
<TokenType.BLOCK_START: 'BLOCK_START'>
BLOCK_END =
<TokenType.BLOCK_END: 'BLOCK_END'>
SPACE =
<TokenType.SPACE: 'SPACE'>
BREAK =
<TokenType.BREAK: 'BREAK'>
STRING =
<TokenType.STRING: 'STRING'>
NUMBER =
<TokenType.NUMBER: 'NUMBER'>
IDENTIFIER =
<TokenType.IDENTIFIER: 'IDENTIFIER'>
DATABASE =
<TokenType.DATABASE: 'DATABASE'>
COLUMN =
<TokenType.COLUMN: 'COLUMN'>
COLUMN_DEF =
<TokenType.COLUMN_DEF: 'COLUMN_DEF'>
SCHEMA =
<TokenType.SCHEMA: 'SCHEMA'>
TABLE =
<TokenType.TABLE: 'TABLE'>
VAR =
<TokenType.VAR: 'VAR'>
BIT_STRING =
<TokenType.BIT_STRING: 'BIT_STRING'>
HEX_STRING =
<TokenType.HEX_STRING: 'HEX_STRING'>
BYTE_STRING =
<TokenType.BYTE_STRING: 'BYTE_STRING'>
NATIONAL_STRING =
<TokenType.NATIONAL_STRING: 'NATIONAL_STRING'>
RAW_STRING =
<TokenType.RAW_STRING: 'RAW_STRING'>
HEREDOC_STRING =
<TokenType.HEREDOC_STRING: 'HEREDOC_STRING'>
UNICODE_STRING =
<TokenType.UNICODE_STRING: 'UNICODE_STRING'>
BIT =
<TokenType.BIT: 'BIT'>
BOOLEAN =
<TokenType.BOOLEAN: 'BOOLEAN'>
TINYINT =
<TokenType.TINYINT: 'TINYINT'>
UTINYINT =
<TokenType.UTINYINT: 'UTINYINT'>
SMALLINT =
<TokenType.SMALLINT: 'SMALLINT'>
USMALLINT =
<TokenType.USMALLINT: 'USMALLINT'>
MEDIUMINT =
<TokenType.MEDIUMINT: 'MEDIUMINT'>
UMEDIUMINT =
<TokenType.UMEDIUMINT: 'UMEDIUMINT'>
INT =
<TokenType.INT: 'INT'>
UINT =
<TokenType.UINT: 'UINT'>
BIGINT =
<TokenType.BIGINT: 'BIGINT'>
UBIGINT =
<TokenType.UBIGINT: 'UBIGINT'>
INT128 =
<TokenType.INT128: 'INT128'>
UINT128 =
<TokenType.UINT128: 'UINT128'>
INT256 =
<TokenType.INT256: 'INT256'>
UINT256 =
<TokenType.UINT256: 'UINT256'>
FLOAT =
<TokenType.FLOAT: 'FLOAT'>
DOUBLE =
<TokenType.DOUBLE: 'DOUBLE'>
DECIMAL =
<TokenType.DECIMAL: 'DECIMAL'>
UDECIMAL =
<TokenType.UDECIMAL: 'UDECIMAL'>
BIGDECIMAL =
<TokenType.BIGDECIMAL: 'BIGDECIMAL'>
CHAR =
<TokenType.CHAR: 'CHAR'>
NCHAR =
<TokenType.NCHAR: 'NCHAR'>
VARCHAR =
<TokenType.VARCHAR: 'VARCHAR'>
NVARCHAR =
<TokenType.NVARCHAR: 'NVARCHAR'>
BPCHAR =
<TokenType.BPCHAR: 'BPCHAR'>
TEXT =
<TokenType.TEXT: 'TEXT'>
MEDIUMTEXT =
<TokenType.MEDIUMTEXT: 'MEDIUMTEXT'>
LONGTEXT =
<TokenType.LONGTEXT: 'LONGTEXT'>
MEDIUMBLOB =
<TokenType.MEDIUMBLOB: 'MEDIUMBLOB'>
LONGBLOB =
<TokenType.LONGBLOB: 'LONGBLOB'>
TINYBLOB =
<TokenType.TINYBLOB: 'TINYBLOB'>
TINYTEXT =
<TokenType.TINYTEXT: 'TINYTEXT'>
NAME =
<TokenType.NAME: 'NAME'>
BINARY =
<TokenType.BINARY: 'BINARY'>
VARBINARY =
<TokenType.VARBINARY: 'VARBINARY'>
JSON =
<TokenType.JSON: 'JSON'>
JSONB =
<TokenType.JSONB: 'JSONB'>
TIME =
<TokenType.TIME: 'TIME'>
TIMETZ =
<TokenType.TIMETZ: 'TIMETZ'>
TIMESTAMP =
<TokenType.TIMESTAMP: 'TIMESTAMP'>
TIMESTAMPTZ =
<TokenType.TIMESTAMPTZ: 'TIMESTAMPTZ'>
TIMESTAMPLTZ =
<TokenType.TIMESTAMPLTZ: 'TIMESTAMPLTZ'>
TIMESTAMP_S =
<TokenType.TIMESTAMP_S: 'TIMESTAMP_S'>
TIMESTAMP_MS =
<TokenType.TIMESTAMP_MS: 'TIMESTAMP_MS'>
TIMESTAMP_NS =
<TokenType.TIMESTAMP_NS: 'TIMESTAMP_NS'>
DATETIME =
<TokenType.DATETIME: 'DATETIME'>
DATETIME64 =
<TokenType.DATETIME64: 'DATETIME64'>
DATE =
<TokenType.DATE: 'DATE'>
DATE32 =
<TokenType.DATE32: 'DATE32'>
INT4RANGE =
<TokenType.INT4RANGE: 'INT4RANGE'>
INT4MULTIRANGE =
<TokenType.INT4MULTIRANGE: 'INT4MULTIRANGE'>
INT8RANGE =
<TokenType.INT8RANGE: 'INT8RANGE'>
INT8MULTIRANGE =
<TokenType.INT8MULTIRANGE: 'INT8MULTIRANGE'>
NUMRANGE =
<TokenType.NUMRANGE: 'NUMRANGE'>
NUMMULTIRANGE =
<TokenType.NUMMULTIRANGE: 'NUMMULTIRANGE'>
TSRANGE =
<TokenType.TSRANGE: 'TSRANGE'>
TSMULTIRANGE =
<TokenType.TSMULTIRANGE: 'TSMULTIRANGE'>
TSTZRANGE =
<TokenType.TSTZRANGE: 'TSTZRANGE'>
TSTZMULTIRANGE =
<TokenType.TSTZMULTIRANGE: 'TSTZMULTIRANGE'>
DATERANGE =
<TokenType.DATERANGE: 'DATERANGE'>
DATEMULTIRANGE =
<TokenType.DATEMULTIRANGE: 'DATEMULTIRANGE'>
UUID =
<TokenType.UUID: 'UUID'>
GEOGRAPHY =
<TokenType.GEOGRAPHY: 'GEOGRAPHY'>
NULLABLE =
<TokenType.NULLABLE: 'NULLABLE'>
GEOMETRY =
<TokenType.GEOMETRY: 'GEOMETRY'>
HLLSKETCH =
<TokenType.HLLSKETCH: 'HLLSKETCH'>
HSTORE =
<TokenType.HSTORE: 'HSTORE'>
SUPER =
<TokenType.SUPER: 'SUPER'>
SERIAL =
<TokenType.SERIAL: 'SERIAL'>
SMALLSERIAL =
<TokenType.SMALLSERIAL: 'SMALLSERIAL'>
BIGSERIAL =
<TokenType.BIGSERIAL: 'BIGSERIAL'>
XML =
<TokenType.XML: 'XML'>
YEAR =
<TokenType.YEAR: 'YEAR'>
UNIQUEIDENTIFIER =
<TokenType.UNIQUEIDENTIFIER: 'UNIQUEIDENTIFIER'>
USERDEFINED =
<TokenType.USERDEFINED: 'USERDEFINED'>
MONEY =
<TokenType.MONEY: 'MONEY'>
SMALLMONEY =
<TokenType.SMALLMONEY: 'SMALLMONEY'>
ROWVERSION =
<TokenType.ROWVERSION: 'ROWVERSION'>
IMAGE =
<TokenType.IMAGE: 'IMAGE'>
VARIANT =
<TokenType.VARIANT: 'VARIANT'>
OBJECT =
<TokenType.OBJECT: 'OBJECT'>
INET =
<TokenType.INET: 'INET'>
IPADDRESS =
<TokenType.IPADDRESS: 'IPADDRESS'>
IPPREFIX =
<TokenType.IPPREFIX: 'IPPREFIX'>
IPV4 =
<TokenType.IPV4: 'IPV4'>
IPV6 =
<TokenType.IPV6: 'IPV6'>
ENUM =
<TokenType.ENUM: 'ENUM'>
ENUM8 =
<TokenType.ENUM8: 'ENUM8'>
ENUM16 =
<TokenType.ENUM16: 'ENUM16'>
FIXEDSTRING =
<TokenType.FIXEDSTRING: 'FIXEDSTRING'>
LOWCARDINALITY =
<TokenType.LOWCARDINALITY: 'LOWCARDINALITY'>
NESTED =
<TokenType.NESTED: 'NESTED'>
AGGREGATEFUNCTION =
<TokenType.AGGREGATEFUNCTION: 'AGGREGATEFUNCTION'>
SIMPLEAGGREGATEFUNCTION =
<TokenType.SIMPLEAGGREGATEFUNCTION: 'SIMPLEAGGREGATEFUNCTION'>
UNKNOWN =
<TokenType.UNKNOWN: 'UNKNOWN'>
ALIAS =
<TokenType.ALIAS: 'ALIAS'>
ALTER =
<TokenType.ALTER: 'ALTER'>
ALWAYS =
<TokenType.ALWAYS: 'ALWAYS'>
ALL =
<TokenType.ALL: 'ALL'>
ANTI =
<TokenType.ANTI: 'ANTI'>
ANY =
<TokenType.ANY: 'ANY'>
APPLY =
<TokenType.APPLY: 'APPLY'>
ARRAY =
<TokenType.ARRAY: 'ARRAY'>
ASC =
<TokenType.ASC: 'ASC'>
ASOF =
<TokenType.ASOF: 'ASOF'>
AUTO_INCREMENT =
<TokenType.AUTO_INCREMENT: 'AUTO_INCREMENT'>
BEGIN =
<TokenType.BEGIN: 'BEGIN'>
BETWEEN =
<TokenType.BETWEEN: 'BETWEEN'>
CACHE =
<TokenType.CACHE: 'CACHE'>
CASE =
<TokenType.CASE: 'CASE'>
CHARACTER_SET =
<TokenType.CHARACTER_SET: 'CHARACTER_SET'>
CLUSTER_BY =
<TokenType.CLUSTER_BY: 'CLUSTER_BY'>
COLLATE =
<TokenType.COLLATE: 'COLLATE'>
COMMAND =
<TokenType.COMMAND: 'COMMAND'>
COMMENT =
<TokenType.COMMENT: 'COMMENT'>
COMMIT =
<TokenType.COMMIT: 'COMMIT'>
CONNECT_BY =
<TokenType.CONNECT_BY: 'CONNECT_BY'>
CONSTRAINT =
<TokenType.CONSTRAINT: 'CONSTRAINT'>
CREATE =
<TokenType.CREATE: 'CREATE'>
CROSS =
<TokenType.CROSS: 'CROSS'>
CUBE =
<TokenType.CUBE: 'CUBE'>
CURRENT_DATE =
<TokenType.CURRENT_DATE: 'CURRENT_DATE'>
CURRENT_DATETIME =
<TokenType.CURRENT_DATETIME: 'CURRENT_DATETIME'>
CURRENT_TIME =
<TokenType.CURRENT_TIME: 'CURRENT_TIME'>
CURRENT_TIMESTAMP =
<TokenType.CURRENT_TIMESTAMP: 'CURRENT_TIMESTAMP'>
CURRENT_USER =
<TokenType.CURRENT_USER: 'CURRENT_USER'>
DEFAULT =
<TokenType.DEFAULT: 'DEFAULT'>
DELETE =
<TokenType.DELETE: 'DELETE'>
DESC =
<TokenType.DESC: 'DESC'>
DESCRIBE =
<TokenType.DESCRIBE: 'DESCRIBE'>
DICTIONARY =
<TokenType.DICTIONARY: 'DICTIONARY'>
DISTINCT =
<TokenType.DISTINCT: 'DISTINCT'>
DISTRIBUTE_BY =
<TokenType.DISTRIBUTE_BY: 'DISTRIBUTE_BY'>
DIV =
<TokenType.DIV: 'DIV'>
DROP =
<TokenType.DROP: 'DROP'>
ELSE =
<TokenType.ELSE: 'ELSE'>
END =
<TokenType.END: 'END'>
ESCAPE =
<TokenType.ESCAPE: 'ESCAPE'>
EXCEPT =
<TokenType.EXCEPT: 'EXCEPT'>
EXECUTE =
<TokenType.EXECUTE: 'EXECUTE'>
EXISTS =
<TokenType.EXISTS: 'EXISTS'>
FALSE =
<TokenType.FALSE: 'FALSE'>
FETCH =
<TokenType.FETCH: 'FETCH'>
FILTER =
<TokenType.FILTER: 'FILTER'>
FINAL =
<TokenType.FINAL: 'FINAL'>
FIRST =
<TokenType.FIRST: 'FIRST'>
FOR =
<TokenType.FOR: 'FOR'>
FORCE =
<TokenType.FORCE: 'FORCE'>
FOREIGN_KEY =
<TokenType.FOREIGN_KEY: 'FOREIGN_KEY'>
FORMAT =
<TokenType.FORMAT: 'FORMAT'>
FROM =
<TokenType.FROM: 'FROM'>
FULL =
<TokenType.FULL: 'FULL'>
FUNCTION =
<TokenType.FUNCTION: 'FUNCTION'>
GLOB =
<TokenType.GLOB: 'GLOB'>
GLOBAL =
<TokenType.GLOBAL: 'GLOBAL'>
GROUP_BY =
<TokenType.GROUP_BY: 'GROUP_BY'>
GROUPING_SETS =
<TokenType.GROUPING_SETS: 'GROUPING_SETS'>
HAVING =
<TokenType.HAVING: 'HAVING'>
HINT =
<TokenType.HINT: 'HINT'>
IGNORE =
<TokenType.IGNORE: 'IGNORE'>
ILIKE =
<TokenType.ILIKE: 'ILIKE'>
ILIKE_ANY =
<TokenType.ILIKE_ANY: 'ILIKE_ANY'>
IN =
<TokenType.IN: 'IN'>
INDEX =
<TokenType.INDEX: 'INDEX'>
INNER =
<TokenType.INNER: 'INNER'>
INSERT =
<TokenType.INSERT: 'INSERT'>
INTERSECT =
<TokenType.INTERSECT: 'INTERSECT'>
INTERVAL =
<TokenType.INTERVAL: 'INTERVAL'>
INTO =
<TokenType.INTO: 'INTO'>
INTRODUCER =
<TokenType.INTRODUCER: 'INTRODUCER'>
IRLIKE =
<TokenType.IRLIKE: 'IRLIKE'>
IS =
<TokenType.IS: 'IS'>
ISNULL =
<TokenType.ISNULL: 'ISNULL'>
JOIN =
<TokenType.JOIN: 'JOIN'>
JOIN_MARKER =
<TokenType.JOIN_MARKER: 'JOIN_MARKER'>
KEEP =
<TokenType.KEEP: 'KEEP'>
KILL =
<TokenType.KILL: 'KILL'>
LANGUAGE =
<TokenType.LANGUAGE: 'LANGUAGE'>
LATERAL =
<TokenType.LATERAL: 'LATERAL'>
LEFT =
<TokenType.LEFT: 'LEFT'>
LIKE =
<TokenType.LIKE: 'LIKE'>
LIKE_ANY =
<TokenType.LIKE_ANY: 'LIKE_ANY'>
LIMIT =
<TokenType.LIMIT: 'LIMIT'>
LOAD =
<TokenType.LOAD: 'LOAD'>
LOCK =
<TokenType.LOCK: 'LOCK'>
MAP =
<TokenType.MAP: 'MAP'>
MATCH_RECOGNIZE =
<TokenType.MATCH_RECOGNIZE: 'MATCH_RECOGNIZE'>
MEMBER_OF =
<TokenType.MEMBER_OF: 'MEMBER_OF'>
MERGE =
<TokenType.MERGE: 'MERGE'>
MOD =
<TokenType.MOD: 'MOD'>
MODEL =
<TokenType.MODEL: 'MODEL'>
NATURAL =
<TokenType.NATURAL: 'NATURAL'>
NEXT =
<TokenType.NEXT: 'NEXT'>
NOTNULL =
<TokenType.NOTNULL: 'NOTNULL'>
NULL =
<TokenType.NULL: 'NULL'>
OBJECT_IDENTIFIER =
<TokenType.OBJECT_IDENTIFIER: 'OBJECT_IDENTIFIER'>
OFFSET =
<TokenType.OFFSET: 'OFFSET'>
ON =
<TokenType.ON: 'ON'>
ONLY =
<TokenType.ONLY: 'ONLY'>
OPERATOR =
<TokenType.OPERATOR: 'OPERATOR'>
ORDER_BY =
<TokenType.ORDER_BY: 'ORDER_BY'>
ORDER_SIBLINGS_BY =
<TokenType.ORDER_SIBLINGS_BY: 'ORDER_SIBLINGS_BY'>
ORDERED =
<TokenType.ORDERED: 'ORDERED'>
ORDINALITY =
<TokenType.ORDINALITY: 'ORDINALITY'>
OUTER =
<TokenType.OUTER: 'OUTER'>
OVER =
<TokenType.OVER: 'OVER'>
OVERLAPS =
<TokenType.OVERLAPS: 'OVERLAPS'>
OVERWRITE =
<TokenType.OVERWRITE: 'OVERWRITE'>
PARTITION =
<TokenType.PARTITION: 'PARTITION'>
PARTITION_BY =
<TokenType.PARTITION_BY: 'PARTITION_BY'>
PERCENT =
<TokenType.PERCENT: 'PERCENT'>
PIVOT =
<TokenType.PIVOT: 'PIVOT'>
PLACEHOLDER =
<TokenType.PLACEHOLDER: 'PLACEHOLDER'>
POSITIONAL =
<TokenType.POSITIONAL: 'POSITIONAL'>
PRAGMA =
<TokenType.PRAGMA: 'PRAGMA'>
PREWHERE =
<TokenType.PREWHERE: 'PREWHERE'>
PRIMARY_KEY =
<TokenType.PRIMARY_KEY: 'PRIMARY_KEY'>
PROCEDURE =
<TokenType.PROCEDURE: 'PROCEDURE'>
PROPERTIES =
<TokenType.PROPERTIES: 'PROPERTIES'>
PSEUDO_TYPE =
<TokenType.PSEUDO_TYPE: 'PSEUDO_TYPE'>
QUALIFY =
<TokenType.QUALIFY: 'QUALIFY'>
QUOTE =
<TokenType.QUOTE: 'QUOTE'>
RANGE =
<TokenType.RANGE: 'RANGE'>
RECURSIVE =
<TokenType.RECURSIVE: 'RECURSIVE'>
REFRESH =
<TokenType.REFRESH: 'REFRESH'>
REPLACE =
<TokenType.REPLACE: 'REPLACE'>
RETURNING =
<TokenType.RETURNING: 'RETURNING'>
REFERENCES =
<TokenType.REFERENCES: 'REFERENCES'>
RIGHT =
<TokenType.RIGHT: 'RIGHT'>
RLIKE =
<TokenType.RLIKE: 'RLIKE'>
ROLLBACK =
<TokenType.ROLLBACK: 'ROLLBACK'>
ROLLUP =
<TokenType.ROLLUP: 'ROLLUP'>
ROW =
<TokenType.ROW: 'ROW'>
ROWS =
<TokenType.ROWS: 'ROWS'>
SELECT =
<TokenType.SELECT: 'SELECT'>
SEMI =
<TokenType.SEMI: 'SEMI'>
SEPARATOR =
<TokenType.SEPARATOR: 'SEPARATOR'>
SEQUENCE =
<TokenType.SEQUENCE: 'SEQUENCE'>
SERDE_PROPERTIES =
<TokenType.SERDE_PROPERTIES: 'SERDE_PROPERTIES'>
SET =
<TokenType.SET: 'SET'>
SETTINGS =
<TokenType.SETTINGS: 'SETTINGS'>
SHOW =
<TokenType.SHOW: 'SHOW'>
SIMILAR_TO =
<TokenType.SIMILAR_TO: 'SIMILAR_TO'>
SOME =
<TokenType.SOME: 'SOME'>
SORT_BY =
<TokenType.SORT_BY: 'SORT_BY'>
START_WITH =
<TokenType.START_WITH: 'START_WITH'>
STORAGE_INTEGRATION =
<TokenType.STORAGE_INTEGRATION: 'STORAGE_INTEGRATION'>
STRUCT =
<TokenType.STRUCT: 'STRUCT'>
TABLE_SAMPLE =
<TokenType.TABLE_SAMPLE: 'TABLE_SAMPLE'>
TEMPORARY =
<TokenType.TEMPORARY: 'TEMPORARY'>
TOP =
<TokenType.TOP: 'TOP'>
THEN =
<TokenType.THEN: 'THEN'>
TRUE =
<TokenType.TRUE: 'TRUE'>
TRUNCATE =
<TokenType.TRUNCATE: 'TRUNCATE'>
UNCACHE =
<TokenType.UNCACHE: 'UNCACHE'>
UNION =
<TokenType.UNION: 'UNION'>
UNNEST =
<TokenType.UNNEST: 'UNNEST'>
UNPIVOT =
<TokenType.UNPIVOT: 'UNPIVOT'>
UPDATE =
<TokenType.UPDATE: 'UPDATE'>
USE =
<TokenType.USE: 'USE'>
USING =
<TokenType.USING: 'USING'>
VALUES =
<TokenType.VALUES: 'VALUES'>
VIEW =
<TokenType.VIEW: 'VIEW'>
VOLATILE =
<TokenType.VOLATILE: 'VOLATILE'>
WHEN =
<TokenType.WHEN: 'WHEN'>
WHERE =
<TokenType.WHERE: 'WHERE'>
WINDOW =
<TokenType.WINDOW: 'WINDOW'>
WITH =
<TokenType.WITH: 'WITH'>
UNIQUE =
<TokenType.UNIQUE: 'UNIQUE'>
VERSION_SNAPSHOT =
<TokenType.VERSION_SNAPSHOT: 'VERSION_SNAPSHOT'>
TIMESTAMP_SNAPSHOT =
<TokenType.TIMESTAMP_SNAPSHOT: 'TIMESTAMP_SNAPSHOT'>
OPTION =
<TokenType.OPTION: 'OPTION'>
Inherited Members
- enum.Enum
- name
- value
class
Token:
387class Token: 388 __slots__ = ("token_type", "text", "line", "col", "start", "end", "comments") 389 390 @classmethod 391 def number(cls, number: int) -> Token: 392 """Returns a NUMBER token with `number` as its text.""" 393 return cls(TokenType.NUMBER, str(number)) 394 395 @classmethod 396 def string(cls, string: str) -> Token: 397 """Returns a STRING token with `string` as its text.""" 398 return cls(TokenType.STRING, string) 399 400 @classmethod 401 def identifier(cls, identifier: str) -> Token: 402 """Returns an IDENTIFIER token with `identifier` as its text.""" 403 return cls(TokenType.IDENTIFIER, identifier) 404 405 @classmethod 406 def var(cls, var: str) -> Token: 407 """Returns an VAR token with `var` as its text.""" 408 return cls(TokenType.VAR, var) 409 410 def __init__( 411 self, 412 token_type: TokenType, 413 text: str, 414 line: int = 1, 415 col: int = 1, 416 start: int = 0, 417 end: int = 0, 418 comments: t.Optional[t.List[str]] = None, 419 ) -> None: 420 """Token initializer. 421 422 Args: 423 token_type: The TokenType Enum. 424 text: The text of the token. 425 line: The line that the token ends on. 426 col: The column that the token ends on. 427 start: The start index of the token. 428 end: The ending index of the token. 429 comments: The comments to attach to the token. 430 """ 431 self.token_type = token_type 432 self.text = text 433 self.line = line 434 self.col = col 435 self.start = start 436 self.end = end 437 self.comments = [] if comments is None else comments 438 439 def __repr__(self) -> str: 440 attributes = ", ".join(f"{k}: {getattr(self, k)}" for k in self.__slots__) 441 return f"<Token {attributes}>"
Token( token_type: TokenType, text: str, line: int = 1, col: int = 1, start: int = 0, end: int = 0, comments: Optional[List[str]] = None)
410 def __init__( 411 self, 412 token_type: TokenType, 413 text: str, 414 line: int = 1, 415 col: int = 1, 416 start: int = 0, 417 end: int = 0, 418 comments: t.Optional[t.List[str]] = None, 419 ) -> None: 420 """Token initializer. 421 422 Args: 423 token_type: The TokenType Enum. 424 text: The text of the token. 425 line: The line that the token ends on. 426 col: The column that the token ends on. 427 start: The start index of the token. 428 end: The ending index of the token. 429 comments: The comments to attach to the token. 430 """ 431 self.token_type = token_type 432 self.text = text 433 self.line = line 434 self.col = col 435 self.start = start 436 self.end = end 437 self.comments = [] if comments is None else comments
Token initializer.
Arguments:
- token_type: The TokenType Enum.
- text: The text of the token.
- line: The line that the token ends on.
- col: The column that the token ends on.
- start: The start index of the token.
- end: The ending index of the token.
- comments: The comments to attach to the token.
390 @classmethod 391 def number(cls, number: int) -> Token: 392 """Returns a NUMBER token with `number` as its text.""" 393 return cls(TokenType.NUMBER, str(number))
Returns a NUMBER token with number
as its text.
395 @classmethod 396 def string(cls, string: str) -> Token: 397 """Returns a STRING token with `string` as its text.""" 398 return cls(TokenType.STRING, string)
Returns a STRING token with string
as its text.
400 @classmethod 401 def identifier(cls, identifier: str) -> Token: 402 """Returns an IDENTIFIER token with `identifier` as its text.""" 403 return cls(TokenType.IDENTIFIER, identifier)
Returns an IDENTIFIER token with identifier
as its text.
class
Tokenizer:
541class Tokenizer(metaclass=_Tokenizer): 542 SINGLE_TOKENS = { 543 "(": TokenType.L_PAREN, 544 ")": TokenType.R_PAREN, 545 "[": TokenType.L_BRACKET, 546 "]": TokenType.R_BRACKET, 547 "{": TokenType.L_BRACE, 548 "}": TokenType.R_BRACE, 549 "&": TokenType.AMP, 550 "^": TokenType.CARET, 551 ":": TokenType.COLON, 552 ",": TokenType.COMMA, 553 ".": TokenType.DOT, 554 "-": TokenType.DASH, 555 "=": TokenType.EQ, 556 ">": TokenType.GT, 557 "<": TokenType.LT, 558 "%": TokenType.MOD, 559 "!": TokenType.NOT, 560 "|": TokenType.PIPE, 561 "+": TokenType.PLUS, 562 ";": TokenType.SEMICOLON, 563 "/": TokenType.SLASH, 564 "\\": TokenType.BACKSLASH, 565 "*": TokenType.STAR, 566 "~": TokenType.TILDA, 567 "?": TokenType.PLACEHOLDER, 568 "@": TokenType.PARAMETER, 569 # used for breaking a var like x'y' but nothing else 570 # the token type doesn't matter 571 "'": TokenType.QUOTE, 572 "`": TokenType.IDENTIFIER, 573 '"': TokenType.IDENTIFIER, 574 "#": TokenType.HASH, 575 } 576 577 BIT_STRINGS: t.List[str | t.Tuple[str, str]] = [] 578 BYTE_STRINGS: t.List[str | t.Tuple[str, str]] = [] 579 HEX_STRINGS: t.List[str | t.Tuple[str, str]] = [] 580 RAW_STRINGS: t.List[str | t.Tuple[str, str]] = [] 581 HEREDOC_STRINGS: t.List[str | t.Tuple[str, str]] = [] 582 UNICODE_STRINGS: t.List[str | t.Tuple[str, str]] = [] 583 IDENTIFIERS: t.List[str | t.Tuple[str, str]] = ['"'] 584 IDENTIFIER_ESCAPES = ['"'] 585 QUOTES: t.List[t.Tuple[str, str] | str] = ["'"] 586 STRING_ESCAPES = ["'"] 587 VAR_SINGLE_TOKENS: t.Set[str] = set() 588 589 # Whether the heredoc tags follow the same lexical rules as unquoted identifiers 590 HEREDOC_TAG_IS_IDENTIFIER = False 591 592 # Token that we'll generate as a fallback if the heredoc prefix doesn't correspond to a heredoc 593 HEREDOC_STRING_ALTERNATIVE = TokenType.VAR 594 595 # Autofilled 596 _COMMENTS: t.Dict[str, str] = {} 597 _FORMAT_STRINGS: t.Dict[str, t.Tuple[str, TokenType]] = {} 598 _IDENTIFIERS: t.Dict[str, str] = {} 599 _IDENTIFIER_ESCAPES: t.Set[str] = set() 600 _QUOTES: t.Dict[str, str] = {} 601 _STRING_ESCAPES: t.Set[str] = set() 602 _KEYWORD_TRIE: t.Dict = {} 603 _RS_TOKENIZER: t.Optional[t.Any] = None 604 605 KEYWORDS: t.Dict[str, TokenType] = { 606 **{f"{{%{postfix}": TokenType.BLOCK_START for postfix in ("", "+", "-")}, 607 **{f"{prefix}%}}": TokenType.BLOCK_END for prefix in ("", "+", "-")}, 608 **{f"{{{{{postfix}": TokenType.BLOCK_START for postfix in ("+", "-")}, 609 **{f"{prefix}}}}}": TokenType.BLOCK_END for prefix in ("+", "-")}, 610 "/*+": TokenType.HINT, 611 "==": TokenType.EQ, 612 "::": TokenType.DCOLON, 613 "||": TokenType.DPIPE, 614 ">=": TokenType.GTE, 615 "<=": TokenType.LTE, 616 "<>": TokenType.NEQ, 617 "!=": TokenType.NEQ, 618 ":=": TokenType.COLON_EQ, 619 "<=>": TokenType.NULLSAFE_EQ, 620 "->": TokenType.ARROW, 621 "->>": TokenType.DARROW, 622 "=>": TokenType.FARROW, 623 "#>": TokenType.HASH_ARROW, 624 "#>>": TokenType.DHASH_ARROW, 625 "<->": TokenType.LR_ARROW, 626 "&&": TokenType.DAMP, 627 "??": TokenType.DQMARK, 628 "ALL": TokenType.ALL, 629 "ALWAYS": TokenType.ALWAYS, 630 "AND": TokenType.AND, 631 "ANTI": TokenType.ANTI, 632 "ANY": TokenType.ANY, 633 "ASC": TokenType.ASC, 634 "AS": TokenType.ALIAS, 635 "ASOF": TokenType.ASOF, 636 "AUTOINCREMENT": TokenType.AUTO_INCREMENT, 637 "AUTO_INCREMENT": TokenType.AUTO_INCREMENT, 638 "BEGIN": TokenType.BEGIN, 639 "BETWEEN": TokenType.BETWEEN, 640 "CACHE": TokenType.CACHE, 641 "UNCACHE": TokenType.UNCACHE, 642 "CASE": TokenType.CASE, 643 "CHARACTER SET": TokenType.CHARACTER_SET, 644 "CLUSTER BY": TokenType.CLUSTER_BY, 645 "COLLATE": TokenType.COLLATE, 646 "COLUMN": TokenType.COLUMN, 647 "COMMIT": TokenType.COMMIT, 648 "CONNECT BY": TokenType.CONNECT_BY, 649 "CONSTRAINT": TokenType.CONSTRAINT, 650 "CREATE": TokenType.CREATE, 651 "CROSS": TokenType.CROSS, 652 "CUBE": TokenType.CUBE, 653 "CURRENT_DATE": TokenType.CURRENT_DATE, 654 "CURRENT_TIME": TokenType.CURRENT_TIME, 655 "CURRENT_TIMESTAMP": TokenType.CURRENT_TIMESTAMP, 656 "CURRENT_USER": TokenType.CURRENT_USER, 657 "DATABASE": TokenType.DATABASE, 658 "DEFAULT": TokenType.DEFAULT, 659 "DELETE": TokenType.DELETE, 660 "DESC": TokenType.DESC, 661 "DESCRIBE": TokenType.DESCRIBE, 662 "DISTINCT": TokenType.DISTINCT, 663 "DISTRIBUTE BY": TokenType.DISTRIBUTE_BY, 664 "DIV": TokenType.DIV, 665 "DROP": TokenType.DROP, 666 "ELSE": TokenType.ELSE, 667 "END": TokenType.END, 668 "ENUM": TokenType.ENUM, 669 "ESCAPE": TokenType.ESCAPE, 670 "EXCEPT": TokenType.EXCEPT, 671 "EXECUTE": TokenType.EXECUTE, 672 "EXISTS": TokenType.EXISTS, 673 "FALSE": TokenType.FALSE, 674 "FETCH": TokenType.FETCH, 675 "FILTER": TokenType.FILTER, 676 "FIRST": TokenType.FIRST, 677 "FULL": TokenType.FULL, 678 "FUNCTION": TokenType.FUNCTION, 679 "FOR": TokenType.FOR, 680 "FOREIGN KEY": TokenType.FOREIGN_KEY, 681 "FORMAT": TokenType.FORMAT, 682 "FROM": TokenType.FROM, 683 "GEOGRAPHY": TokenType.GEOGRAPHY, 684 "GEOMETRY": TokenType.GEOMETRY, 685 "GLOB": TokenType.GLOB, 686 "GROUP BY": TokenType.GROUP_BY, 687 "GROUPING SETS": TokenType.GROUPING_SETS, 688 "HAVING": TokenType.HAVING, 689 "ILIKE": TokenType.ILIKE, 690 "IN": TokenType.IN, 691 "INDEX": TokenType.INDEX, 692 "INET": TokenType.INET, 693 "INNER": TokenType.INNER, 694 "INSERT": TokenType.INSERT, 695 "INTERVAL": TokenType.INTERVAL, 696 "INTERSECT": TokenType.INTERSECT, 697 "INTO": TokenType.INTO, 698 "IS": TokenType.IS, 699 "ISNULL": TokenType.ISNULL, 700 "JOIN": TokenType.JOIN, 701 "KEEP": TokenType.KEEP, 702 "KILL": TokenType.KILL, 703 "LATERAL": TokenType.LATERAL, 704 "LEFT": TokenType.LEFT, 705 "LIKE": TokenType.LIKE, 706 "LIMIT": TokenType.LIMIT, 707 "LOAD": TokenType.LOAD, 708 "LOCK": TokenType.LOCK, 709 "MERGE": TokenType.MERGE, 710 "NATURAL": TokenType.NATURAL, 711 "NEXT": TokenType.NEXT, 712 "NOT": TokenType.NOT, 713 "NOTNULL": TokenType.NOTNULL, 714 "NULL": TokenType.NULL, 715 "OBJECT": TokenType.OBJECT, 716 "OFFSET": TokenType.OFFSET, 717 "ON": TokenType.ON, 718 "OR": TokenType.OR, 719 "XOR": TokenType.XOR, 720 "ORDER BY": TokenType.ORDER_BY, 721 "ORDINALITY": TokenType.ORDINALITY, 722 "OUTER": TokenType.OUTER, 723 "OVER": TokenType.OVER, 724 "OVERLAPS": TokenType.OVERLAPS, 725 "OVERWRITE": TokenType.OVERWRITE, 726 "PARTITION": TokenType.PARTITION, 727 "PARTITION BY": TokenType.PARTITION_BY, 728 "PARTITIONED BY": TokenType.PARTITION_BY, 729 "PARTITIONED_BY": TokenType.PARTITION_BY, 730 "PERCENT": TokenType.PERCENT, 731 "PIVOT": TokenType.PIVOT, 732 "PRAGMA": TokenType.PRAGMA, 733 "PRIMARY KEY": TokenType.PRIMARY_KEY, 734 "PROCEDURE": TokenType.PROCEDURE, 735 "QUALIFY": TokenType.QUALIFY, 736 "RANGE": TokenType.RANGE, 737 "RECURSIVE": TokenType.RECURSIVE, 738 "REGEXP": TokenType.RLIKE, 739 "REPLACE": TokenType.REPLACE, 740 "RETURNING": TokenType.RETURNING, 741 "REFERENCES": TokenType.REFERENCES, 742 "RIGHT": TokenType.RIGHT, 743 "RLIKE": TokenType.RLIKE, 744 "ROLLBACK": TokenType.ROLLBACK, 745 "ROLLUP": TokenType.ROLLUP, 746 "ROW": TokenType.ROW, 747 "ROWS": TokenType.ROWS, 748 "SCHEMA": TokenType.SCHEMA, 749 "SELECT": TokenType.SELECT, 750 "SEMI": TokenType.SEMI, 751 "SET": TokenType.SET, 752 "SETTINGS": TokenType.SETTINGS, 753 "SHOW": TokenType.SHOW, 754 "SIMILAR TO": TokenType.SIMILAR_TO, 755 "SOME": TokenType.SOME, 756 "SORT BY": TokenType.SORT_BY, 757 "START WITH": TokenType.START_WITH, 758 "TABLE": TokenType.TABLE, 759 "TABLESAMPLE": TokenType.TABLE_SAMPLE, 760 "TEMP": TokenType.TEMPORARY, 761 "TEMPORARY": TokenType.TEMPORARY, 762 "THEN": TokenType.THEN, 763 "TRUE": TokenType.TRUE, 764 "TRUNCATE": TokenType.TRUNCATE, 765 "UNION": TokenType.UNION, 766 "UNKNOWN": TokenType.UNKNOWN, 767 "UNNEST": TokenType.UNNEST, 768 "UNPIVOT": TokenType.UNPIVOT, 769 "UPDATE": TokenType.UPDATE, 770 "USE": TokenType.USE, 771 "USING": TokenType.USING, 772 "UUID": TokenType.UUID, 773 "VALUES": TokenType.VALUES, 774 "VIEW": TokenType.VIEW, 775 "VOLATILE": TokenType.VOLATILE, 776 "WHEN": TokenType.WHEN, 777 "WHERE": TokenType.WHERE, 778 "WINDOW": TokenType.WINDOW, 779 "WITH": TokenType.WITH, 780 "APPLY": TokenType.APPLY, 781 "ARRAY": TokenType.ARRAY, 782 "BIT": TokenType.BIT, 783 "BOOL": TokenType.BOOLEAN, 784 "BOOLEAN": TokenType.BOOLEAN, 785 "BYTE": TokenType.TINYINT, 786 "MEDIUMINT": TokenType.MEDIUMINT, 787 "INT1": TokenType.TINYINT, 788 "TINYINT": TokenType.TINYINT, 789 "INT16": TokenType.SMALLINT, 790 "SHORT": TokenType.SMALLINT, 791 "SMALLINT": TokenType.SMALLINT, 792 "INT128": TokenType.INT128, 793 "HUGEINT": TokenType.INT128, 794 "INT2": TokenType.SMALLINT, 795 "INTEGER": TokenType.INT, 796 "INT": TokenType.INT, 797 "INT4": TokenType.INT, 798 "INT32": TokenType.INT, 799 "INT64": TokenType.BIGINT, 800 "LONG": TokenType.BIGINT, 801 "BIGINT": TokenType.BIGINT, 802 "INT8": TokenType.TINYINT, 803 "DEC": TokenType.DECIMAL, 804 "DECIMAL": TokenType.DECIMAL, 805 "BIGDECIMAL": TokenType.BIGDECIMAL, 806 "BIGNUMERIC": TokenType.BIGDECIMAL, 807 "MAP": TokenType.MAP, 808 "NULLABLE": TokenType.NULLABLE, 809 "NUMBER": TokenType.DECIMAL, 810 "NUMERIC": TokenType.DECIMAL, 811 "FIXED": TokenType.DECIMAL, 812 "REAL": TokenType.FLOAT, 813 "FLOAT": TokenType.FLOAT, 814 "FLOAT4": TokenType.FLOAT, 815 "FLOAT8": TokenType.DOUBLE, 816 "DOUBLE": TokenType.DOUBLE, 817 "DOUBLE PRECISION": TokenType.DOUBLE, 818 "JSON": TokenType.JSON, 819 "CHAR": TokenType.CHAR, 820 "CHARACTER": TokenType.CHAR, 821 "NCHAR": TokenType.NCHAR, 822 "VARCHAR": TokenType.VARCHAR, 823 "VARCHAR2": TokenType.VARCHAR, 824 "NVARCHAR": TokenType.NVARCHAR, 825 "NVARCHAR2": TokenType.NVARCHAR, 826 "BPCHAR": TokenType.BPCHAR, 827 "STR": TokenType.TEXT, 828 "STRING": TokenType.TEXT, 829 "TEXT": TokenType.TEXT, 830 "LONGTEXT": TokenType.LONGTEXT, 831 "MEDIUMTEXT": TokenType.MEDIUMTEXT, 832 "TINYTEXT": TokenType.TINYTEXT, 833 "CLOB": TokenType.TEXT, 834 "LONGVARCHAR": TokenType.TEXT, 835 "BINARY": TokenType.BINARY, 836 "BLOB": TokenType.VARBINARY, 837 "LONGBLOB": TokenType.LONGBLOB, 838 "MEDIUMBLOB": TokenType.MEDIUMBLOB, 839 "TINYBLOB": TokenType.TINYBLOB, 840 "BYTEA": TokenType.VARBINARY, 841 "VARBINARY": TokenType.VARBINARY, 842 "TIME": TokenType.TIME, 843 "TIMETZ": TokenType.TIMETZ, 844 "TIMESTAMP": TokenType.TIMESTAMP, 845 "TIMESTAMPTZ": TokenType.TIMESTAMPTZ, 846 "TIMESTAMPLTZ": TokenType.TIMESTAMPLTZ, 847 "DATE": TokenType.DATE, 848 "DATETIME": TokenType.DATETIME, 849 "INT4RANGE": TokenType.INT4RANGE, 850 "INT4MULTIRANGE": TokenType.INT4MULTIRANGE, 851 "INT8RANGE": TokenType.INT8RANGE, 852 "INT8MULTIRANGE": TokenType.INT8MULTIRANGE, 853 "NUMRANGE": TokenType.NUMRANGE, 854 "NUMMULTIRANGE": TokenType.NUMMULTIRANGE, 855 "TSRANGE": TokenType.TSRANGE, 856 "TSMULTIRANGE": TokenType.TSMULTIRANGE, 857 "TSTZRANGE": TokenType.TSTZRANGE, 858 "TSTZMULTIRANGE": TokenType.TSTZMULTIRANGE, 859 "DATERANGE": TokenType.DATERANGE, 860 "DATEMULTIRANGE": TokenType.DATEMULTIRANGE, 861 "UNIQUE": TokenType.UNIQUE, 862 "STRUCT": TokenType.STRUCT, 863 "SEQUENCE": TokenType.SEQUENCE, 864 "VARIANT": TokenType.VARIANT, 865 "ALTER": TokenType.ALTER, 866 "ANALYZE": TokenType.COMMAND, 867 "CALL": TokenType.COMMAND, 868 "COMMENT": TokenType.COMMENT, 869 "COPY": TokenType.COMMAND, 870 "EXPLAIN": TokenType.COMMAND, 871 "GRANT": TokenType.COMMAND, 872 "OPTIMIZE": TokenType.COMMAND, 873 "PREPARE": TokenType.COMMAND, 874 "VACUUM": TokenType.COMMAND, 875 "USER-DEFINED": TokenType.USERDEFINED, 876 "FOR VERSION": TokenType.VERSION_SNAPSHOT, 877 "FOR TIMESTAMP": TokenType.TIMESTAMP_SNAPSHOT, 878 } 879 880 WHITE_SPACE: t.Dict[t.Optional[str], TokenType] = { 881 " ": TokenType.SPACE, 882 "\t": TokenType.SPACE, 883 "\n": TokenType.BREAK, 884 "\r": TokenType.BREAK, 885 } 886 887 COMMANDS = { 888 TokenType.COMMAND, 889 TokenType.EXECUTE, 890 TokenType.FETCH, 891 TokenType.SHOW, 892 } 893 894 COMMAND_PREFIX_TOKENS = {TokenType.SEMICOLON, TokenType.BEGIN} 895 896 # handle numeric literals like in hive (3L = BIGINT) 897 NUMERIC_LITERALS: t.Dict[str, str] = {} 898 899 COMMENTS = ["--", ("/*", "*/")] 900 901 __slots__ = ( 902 "sql", 903 "size", 904 "tokens", 905 "dialect", 906 "_start", 907 "_current", 908 "_line", 909 "_col", 910 "_comments", 911 "_char", 912 "_end", 913 "_peek", 914 "_prev_token_line", 915 "_rs_dialect_settings", 916 ) 917 918 def __init__(self, dialect: DialectType = None) -> None: 919 from sqlglot.dialects import Dialect 920 921 self.dialect = Dialect.get_or_raise(dialect) 922 923 if USE_RS_TOKENIZER: 924 self._rs_dialect_settings = RsTokenizerDialectSettings( 925 escape_sequences=self.dialect.ESCAPE_SEQUENCES, 926 identifiers_can_start_with_digit=self.dialect.IDENTIFIERS_CAN_START_WITH_DIGIT, 927 ) 928 929 self.reset() 930 931 def reset(self) -> None: 932 self.sql = "" 933 self.size = 0 934 self.tokens: t.List[Token] = [] 935 self._start = 0 936 self._current = 0 937 self._line = 1 938 self._col = 0 939 self._comments: t.List[str] = [] 940 941 self._char = "" 942 self._end = False 943 self._peek = "" 944 self._prev_token_line = -1 945 946 def tokenize(self, sql: str) -> t.List[Token]: 947 """Returns a list of tokens corresponding to the SQL string `sql`.""" 948 if USE_RS_TOKENIZER: 949 return self.tokenize_rs(sql) 950 951 self.reset() 952 self.sql = sql 953 self.size = len(sql) 954 955 try: 956 self._scan() 957 except Exception as e: 958 start = max(self._current - 50, 0) 959 end = min(self._current + 50, self.size - 1) 960 context = self.sql[start:end] 961 raise TokenError(f"Error tokenizing '{context}'") from e 962 963 return self.tokens 964 965 def _scan(self, until: t.Optional[t.Callable] = None) -> None: 966 while self.size and not self._end: 967 current = self._current 968 969 # skip spaces inline rather than iteratively call advance() 970 # for performance reasons 971 while current < self.size: 972 char = self.sql[current] 973 974 if char.isspace() and (char == " " or char == "\t"): 975 current += 1 976 else: 977 break 978 979 n = current - self._current 980 self._start = current 981 self._advance(n if n > 1 else 1) 982 983 if self._char is None: 984 break 985 986 if not self._char.isspace(): 987 if self._char.isdigit(): 988 self._scan_number() 989 elif self._char in self._IDENTIFIERS: 990 self._scan_identifier(self._IDENTIFIERS[self._char]) 991 else: 992 self._scan_keywords() 993 994 if until and until(): 995 break 996 997 if self.tokens and self._comments: 998 self.tokens[-1].comments.extend(self._comments) 999 1000 def _chars(self, size: int) -> str: 1001 if size == 1: 1002 return self._char 1003 1004 start = self._current - 1 1005 end = start + size 1006 1007 return self.sql[start:end] if end <= self.size else "" 1008 1009 def _advance(self, i: int = 1, alnum: bool = False) -> None: 1010 if self.WHITE_SPACE.get(self._char) is TokenType.BREAK: 1011 # Ensures we don't count an extra line if we get a \r\n line break sequence 1012 if self._char == "\r" and self._peek == "\n": 1013 i = 2 1014 self._start += 1 1015 1016 self._col = 1 1017 self._line += 1 1018 else: 1019 self._col += i 1020 1021 self._current += i 1022 self._end = self._current >= self.size 1023 self._char = self.sql[self._current - 1] 1024 self._peek = "" if self._end else self.sql[self._current] 1025 1026 if alnum and self._char.isalnum(): 1027 # Here we use local variables instead of attributes for better performance 1028 _col = self._col 1029 _current = self._current 1030 _end = self._end 1031 _peek = self._peek 1032 1033 while _peek.isalnum(): 1034 _col += 1 1035 _current += 1 1036 _end = _current >= self.size 1037 _peek = "" if _end else self.sql[_current] 1038 1039 self._col = _col 1040 self._current = _current 1041 self._end = _end 1042 self._peek = _peek 1043 self._char = self.sql[_current - 1] 1044 1045 @property 1046 def _text(self) -> str: 1047 return self.sql[self._start : self._current] 1048 1049 def _add(self, token_type: TokenType, text: t.Optional[str] = None) -> None: 1050 self._prev_token_line = self._line 1051 1052 if self._comments and token_type == TokenType.SEMICOLON and self.tokens: 1053 self.tokens[-1].comments.extend(self._comments) 1054 self._comments = [] 1055 1056 self.tokens.append( 1057 Token( 1058 token_type, 1059 text=self._text if text is None else text, 1060 line=self._line, 1061 col=self._col, 1062 start=self._start, 1063 end=self._current - 1, 1064 comments=self._comments, 1065 ) 1066 ) 1067 self._comments = [] 1068 1069 # If we have either a semicolon or a begin token before the command's token, we'll parse 1070 # whatever follows the command's token as a string 1071 if ( 1072 token_type in self.COMMANDS 1073 and self._peek != ";" 1074 and (len(self.tokens) == 1 or self.tokens[-2].token_type in self.COMMAND_PREFIX_TOKENS) 1075 ): 1076 start = self._current 1077 tokens = len(self.tokens) 1078 self._scan(lambda: self._peek == ";") 1079 self.tokens = self.tokens[:tokens] 1080 text = self.sql[start : self._current].strip() 1081 if text: 1082 self._add(TokenType.STRING, text) 1083 1084 def _scan_keywords(self) -> None: 1085 size = 0 1086 word = None 1087 chars = self._text 1088 char = chars 1089 prev_space = False 1090 skip = False 1091 trie = self._KEYWORD_TRIE 1092 single_token = char in self.SINGLE_TOKENS 1093 1094 while chars: 1095 if skip: 1096 result = TrieResult.PREFIX 1097 else: 1098 result, trie = in_trie(trie, char.upper()) 1099 1100 if result == TrieResult.FAILED: 1101 break 1102 if result == TrieResult.EXISTS: 1103 word = chars 1104 1105 end = self._current + size 1106 size += 1 1107 1108 if end < self.size: 1109 char = self.sql[end] 1110 single_token = single_token or char in self.SINGLE_TOKENS 1111 is_space = char.isspace() 1112 1113 if not is_space or not prev_space: 1114 if is_space: 1115 char = " " 1116 chars += char 1117 prev_space = is_space 1118 skip = False 1119 else: 1120 skip = True 1121 else: 1122 char = "" 1123 break 1124 1125 if word: 1126 if self._scan_string(word): 1127 return 1128 if self._scan_comment(word): 1129 return 1130 if prev_space or single_token or not char: 1131 self._advance(size - 1) 1132 word = word.upper() 1133 self._add(self.KEYWORDS[word], text=word) 1134 return 1135 1136 if self._char in self.SINGLE_TOKENS: 1137 self._add(self.SINGLE_TOKENS[self._char], text=self._char) 1138 return 1139 1140 self._scan_var() 1141 1142 def _scan_comment(self, comment_start: str) -> bool: 1143 if comment_start not in self._COMMENTS: 1144 return False 1145 1146 comment_start_line = self._line 1147 comment_start_size = len(comment_start) 1148 comment_end = self._COMMENTS[comment_start] 1149 1150 if comment_end: 1151 # Skip the comment's start delimiter 1152 self._advance(comment_start_size) 1153 1154 comment_end_size = len(comment_end) 1155 while not self._end and self._chars(comment_end_size) != comment_end: 1156 self._advance(alnum=True) 1157 1158 self._comments.append(self._text[comment_start_size : -comment_end_size + 1]) 1159 self._advance(comment_end_size - 1) 1160 else: 1161 while not self._end and self.WHITE_SPACE.get(self._peek) is not TokenType.BREAK: 1162 self._advance(alnum=True) 1163 self._comments.append(self._text[comment_start_size:]) 1164 1165 # Leading comment is attached to the succeeding token, whilst trailing comment to the preceding. 1166 # Multiple consecutive comments are preserved by appending them to the current comments list. 1167 if comment_start_line == self._prev_token_line: 1168 self.tokens[-1].comments.extend(self._comments) 1169 self._comments = [] 1170 self._prev_token_line = self._line 1171 1172 return True 1173 1174 def _scan_number(self) -> None: 1175 if self._char == "0": 1176 peek = self._peek.upper() 1177 if peek == "B": 1178 return self._scan_bits() if self.BIT_STRINGS else self._add(TokenType.NUMBER) 1179 elif peek == "X": 1180 return self._scan_hex() if self.HEX_STRINGS else self._add(TokenType.NUMBER) 1181 1182 decimal = False 1183 scientific = 0 1184 1185 while True: 1186 if self._peek.isdigit(): 1187 self._advance() 1188 elif self._peek == "." and not decimal: 1189 decimal = True 1190 self._advance() 1191 elif self._peek in ("-", "+") and scientific == 1: 1192 scientific += 1 1193 self._advance() 1194 elif self._peek.upper() == "E" and not scientific: 1195 scientific += 1 1196 self._advance() 1197 elif self._peek.isidentifier(): 1198 number_text = self._text 1199 literal = "" 1200 1201 while self._peek.strip() and self._peek not in self.SINGLE_TOKENS: 1202 literal += self._peek 1203 self._advance() 1204 1205 token_type = self.KEYWORDS.get(self.NUMERIC_LITERALS.get(literal.upper(), "")) 1206 1207 if token_type: 1208 self._add(TokenType.NUMBER, number_text) 1209 self._add(TokenType.DCOLON, "::") 1210 return self._add(token_type, literal) 1211 elif self.dialect.IDENTIFIERS_CAN_START_WITH_DIGIT: 1212 return self._add(TokenType.VAR) 1213 1214 self._advance(-len(literal)) 1215 return self._add(TokenType.NUMBER, number_text) 1216 else: 1217 return self._add(TokenType.NUMBER) 1218 1219 def _scan_bits(self) -> None: 1220 self._advance() 1221 value = self._extract_value() 1222 try: 1223 # If `value` can't be converted to a binary, fallback to tokenizing it as an identifier 1224 int(value, 2) 1225 self._add(TokenType.BIT_STRING, value[2:]) # Drop the 0b 1226 except ValueError: 1227 self._add(TokenType.IDENTIFIER) 1228 1229 def _scan_hex(self) -> None: 1230 self._advance() 1231 value = self._extract_value() 1232 try: 1233 # If `value` can't be converted to a hex, fallback to tokenizing it as an identifier 1234 int(value, 16) 1235 self._add(TokenType.HEX_STRING, value[2:]) # Drop the 0x 1236 except ValueError: 1237 self._add(TokenType.IDENTIFIER) 1238 1239 def _extract_value(self) -> str: 1240 while True: 1241 char = self._peek.strip() 1242 if char and char not in self.SINGLE_TOKENS: 1243 self._advance(alnum=True) 1244 else: 1245 break 1246 1247 return self._text 1248 1249 def _scan_string(self, start: str) -> bool: 1250 base = None 1251 token_type = TokenType.STRING 1252 1253 if start in self._QUOTES: 1254 end = self._QUOTES[start] 1255 elif start in self._FORMAT_STRINGS: 1256 end, token_type = self._FORMAT_STRINGS[start] 1257 1258 if token_type == TokenType.HEX_STRING: 1259 base = 16 1260 elif token_type == TokenType.BIT_STRING: 1261 base = 2 1262 elif token_type == TokenType.HEREDOC_STRING: 1263 if ( 1264 self.HEREDOC_TAG_IS_IDENTIFIER 1265 and not self._peek.isidentifier() 1266 and not self._peek == end 1267 ): 1268 if self.HEREDOC_STRING_ALTERNATIVE != token_type.VAR: 1269 self._add(self.HEREDOC_STRING_ALTERNATIVE) 1270 else: 1271 self._scan_var() 1272 1273 return True 1274 1275 self._advance() 1276 tag = "" if self._char == end else self._extract_string(end) 1277 end = f"{start}{tag}{end}" 1278 else: 1279 return False 1280 1281 self._advance(len(start)) 1282 text = self._extract_string(end) 1283 1284 if base: 1285 try: 1286 int(text, base) 1287 except Exception: 1288 raise TokenError( 1289 f"Numeric string contains invalid characters from {self._line}:{self._start}" 1290 ) 1291 1292 self._add(token_type, text) 1293 return True 1294 1295 def _scan_identifier(self, identifier_end: str) -> None: 1296 self._advance() 1297 text = self._extract_string(identifier_end, self._IDENTIFIER_ESCAPES) 1298 self._add(TokenType.IDENTIFIER, text) 1299 1300 def _scan_var(self) -> None: 1301 while True: 1302 char = self._peek.strip() 1303 if char and (char in self.VAR_SINGLE_TOKENS or char not in self.SINGLE_TOKENS): 1304 self._advance(alnum=True) 1305 else: 1306 break 1307 1308 self._add( 1309 TokenType.VAR 1310 if self.tokens and self.tokens[-1].token_type == TokenType.PARAMETER 1311 else self.KEYWORDS.get(self._text.upper(), TokenType.VAR) 1312 ) 1313 1314 def _extract_string(self, delimiter: str, escapes=None) -> str: 1315 text = "" 1316 delim_size = len(delimiter) 1317 escapes = self._STRING_ESCAPES if escapes is None else escapes 1318 1319 while True: 1320 if ( 1321 self._char in escapes 1322 and (self._peek == delimiter or self._peek in escapes) 1323 and (self._char not in self._QUOTES or self._char == self._peek) 1324 ): 1325 if self._peek == delimiter: 1326 text += self._peek 1327 else: 1328 text += self._char + self._peek 1329 1330 if self._current + 1 < self.size: 1331 self._advance(2) 1332 else: 1333 raise TokenError(f"Missing {delimiter} from {self._line}:{self._current}") 1334 else: 1335 if self._chars(delim_size) == delimiter: 1336 if delim_size > 1: 1337 self._advance(delim_size - 1) 1338 break 1339 1340 if self._end: 1341 raise TokenError(f"Missing {delimiter} from {self._line}:{self._start}") 1342 1343 if ( 1344 self.dialect.ESCAPE_SEQUENCES 1345 and self._peek 1346 and self._char in self.STRING_ESCAPES 1347 ): 1348 escaped_sequence = self.dialect.ESCAPE_SEQUENCES.get(self._char + self._peek) 1349 if escaped_sequence: 1350 self._advance(2) 1351 text += escaped_sequence 1352 continue 1353 1354 current = self._current - 1 1355 self._advance(alnum=True) 1356 text += self.sql[current : self._current - 1] 1357 1358 return text 1359 1360 def tokenize_rs(self, sql: str) -> t.List[Token]: 1361 if not self._RS_TOKENIZER: 1362 raise SqlglotError("Rust tokenizer is not available") 1363 1364 try: 1365 tokens = self._RS_TOKENIZER.tokenize(sql, self._rs_dialect_settings) 1366 for token in tokens: 1367 token.token_type = _ALL_TOKEN_TYPES[token.token_type_index] 1368 return tokens 1369 except Exception as e: 1370 raise TokenError(str(e))
Tokenizer( dialect: Union[str, sqlglot.dialects.dialect.Dialect, Type[sqlglot.dialects.dialect.Dialect], NoneType] = None)
918 def __init__(self, dialect: DialectType = None) -> None: 919 from sqlglot.dialects import Dialect 920 921 self.dialect = Dialect.get_or_raise(dialect) 922 923 if USE_RS_TOKENIZER: 924 self._rs_dialect_settings = RsTokenizerDialectSettings( 925 escape_sequences=self.dialect.ESCAPE_SEQUENCES, 926 identifiers_can_start_with_digit=self.dialect.IDENTIFIERS_CAN_START_WITH_DIGIT, 927 ) 928 929 self.reset()
SINGLE_TOKENS =
{'(': <TokenType.L_PAREN: 'L_PAREN'>, ')': <TokenType.R_PAREN: 'R_PAREN'>, '[': <TokenType.L_BRACKET: 'L_BRACKET'>, ']': <TokenType.R_BRACKET: 'R_BRACKET'>, '{': <TokenType.L_BRACE: 'L_BRACE'>, '}': <TokenType.R_BRACE: 'R_BRACE'>, '&': <TokenType.AMP: 'AMP'>, '^': <TokenType.CARET: 'CARET'>, ':': <TokenType.COLON: 'COLON'>, ',': <TokenType.COMMA: 'COMMA'>, '.': <TokenType.DOT: 'DOT'>, '-': <TokenType.DASH: 'DASH'>, '=': <TokenType.EQ: 'EQ'>, '>': <TokenType.GT: 'GT'>, '<': <TokenType.LT: 'LT'>, '%': <TokenType.MOD: 'MOD'>, '!': <TokenType.NOT: 'NOT'>, '|': <TokenType.PIPE: 'PIPE'>, '+': <TokenType.PLUS: 'PLUS'>, ';': <TokenType.SEMICOLON: 'SEMICOLON'>, '/': <TokenType.SLASH: 'SLASH'>, '\\': <TokenType.BACKSLASH: 'BACKSLASH'>, '*': <TokenType.STAR: 'STAR'>, '~': <TokenType.TILDA: 'TILDA'>, '?': <TokenType.PLACEHOLDER: 'PLACEHOLDER'>, '@': <TokenType.PARAMETER: 'PARAMETER'>, "'": <TokenType.QUOTE: 'QUOTE'>, '`': <TokenType.IDENTIFIER: 'IDENTIFIER'>, '"': <TokenType.IDENTIFIER: 'IDENTIFIER'>, '#': <TokenType.HASH: 'HASH'>}
HEREDOC_STRING_ALTERNATIVE =
<TokenType.VAR: 'VAR'>
KEYWORDS: Dict[str, TokenType] =
{'{%': <TokenType.BLOCK_START: 'BLOCK_START'>, '{%+': <TokenType.BLOCK_START: 'BLOCK_START'>, '{%-': <TokenType.BLOCK_START: 'BLOCK_START'>, '%}': <TokenType.BLOCK_END: 'BLOCK_END'>, '+%}': <TokenType.BLOCK_END: 'BLOCK_END'>, '-%}': <TokenType.BLOCK_END: 'BLOCK_END'>, '{{+': <TokenType.BLOCK_START: 'BLOCK_START'>, '{{-': <TokenType.BLOCK_START: 'BLOCK_START'>, '+}}': <TokenType.BLOCK_END: 'BLOCK_END'>, '-}}': <TokenType.BLOCK_END: 'BLOCK_END'>, '/*+': <TokenType.HINT: 'HINT'>, '==': <TokenType.EQ: 'EQ'>, '::': <TokenType.DCOLON: 'DCOLON'>, '||': <TokenType.DPIPE: 'DPIPE'>, '>=': <TokenType.GTE: 'GTE'>, '<=': <TokenType.LTE: 'LTE'>, '<>': <TokenType.NEQ: 'NEQ'>, '!=': <TokenType.NEQ: 'NEQ'>, ':=': <TokenType.COLON_EQ: 'COLON_EQ'>, '<=>': <TokenType.NULLSAFE_EQ: 'NULLSAFE_EQ'>, '->': <TokenType.ARROW: 'ARROW'>, '->>': <TokenType.DARROW: 'DARROW'>, '=>': <TokenType.FARROW: 'FARROW'>, '#>': <TokenType.HASH_ARROW: 'HASH_ARROW'>, '#>>': <TokenType.DHASH_ARROW: 'DHASH_ARROW'>, '<->': <TokenType.LR_ARROW: 'LR_ARROW'>, '&&': <TokenType.DAMP: 'DAMP'>, '??': <TokenType.DQMARK: 'DQMARK'>, 'ALL': <TokenType.ALL: 'ALL'>, 'ALWAYS': <TokenType.ALWAYS: 'ALWAYS'>, 'AND': <TokenType.AND: 'AND'>, 'ANTI': <TokenType.ANTI: 'ANTI'>, 'ANY': <TokenType.ANY: 'ANY'>, 'ASC': <TokenType.ASC: 'ASC'>, 'AS': <TokenType.ALIAS: 'ALIAS'>, 'ASOF': <TokenType.ASOF: 'ASOF'>, 'AUTOINCREMENT': <TokenType.AUTO_INCREMENT: 'AUTO_INCREMENT'>, 'AUTO_INCREMENT': <TokenType.AUTO_INCREMENT: 'AUTO_INCREMENT'>, 'BEGIN': <TokenType.BEGIN: 'BEGIN'>, 'BETWEEN': <TokenType.BETWEEN: 'BETWEEN'>, 'CACHE': <TokenType.CACHE: 'CACHE'>, 'UNCACHE': <TokenType.UNCACHE: 'UNCACHE'>, 'CASE': <TokenType.CASE: 'CASE'>, 'CHARACTER SET': <TokenType.CHARACTER_SET: 'CHARACTER_SET'>, 'CLUSTER BY': <TokenType.CLUSTER_BY: 'CLUSTER_BY'>, 'COLLATE': <TokenType.COLLATE: 'COLLATE'>, 'COLUMN': <TokenType.COLUMN: 'COLUMN'>, 'COMMIT': <TokenType.COMMIT: 'COMMIT'>, 'CONNECT BY': <TokenType.CONNECT_BY: 'CONNECT_BY'>, 'CONSTRAINT': <TokenType.CONSTRAINT: 'CONSTRAINT'>, 'CREATE': <TokenType.CREATE: 'CREATE'>, 'CROSS': <TokenType.CROSS: 'CROSS'>, 'CUBE': <TokenType.CUBE: 'CUBE'>, 'CURRENT_DATE': <TokenType.CURRENT_DATE: 'CURRENT_DATE'>, 'CURRENT_TIME': <TokenType.CURRENT_TIME: 'CURRENT_TIME'>, 'CURRENT_TIMESTAMP': <TokenType.CURRENT_TIMESTAMP: 'CURRENT_TIMESTAMP'>, 'CURRENT_USER': <TokenType.CURRENT_USER: 'CURRENT_USER'>, 'DATABASE': <TokenType.DATABASE: 'DATABASE'>, 'DEFAULT': <TokenType.DEFAULT: 'DEFAULT'>, 'DELETE': <TokenType.DELETE: 'DELETE'>, 'DESC': <TokenType.DESC: 'DESC'>, 'DESCRIBE': <TokenType.DESCRIBE: 'DESCRIBE'>, 'DISTINCT': <TokenType.DISTINCT: 'DISTINCT'>, 'DISTRIBUTE BY': <TokenType.DISTRIBUTE_BY: 'DISTRIBUTE_BY'>, 'DIV': <TokenType.DIV: 'DIV'>, 'DROP': <TokenType.DROP: 'DROP'>, 'ELSE': <TokenType.ELSE: 'ELSE'>, 'END': <TokenType.END: 'END'>, 'ENUM': <TokenType.ENUM: 'ENUM'>, 'ESCAPE': <TokenType.ESCAPE: 'ESCAPE'>, 'EXCEPT': <TokenType.EXCEPT: 'EXCEPT'>, 'EXECUTE': <TokenType.EXECUTE: 'EXECUTE'>, 'EXISTS': <TokenType.EXISTS: 'EXISTS'>, 'FALSE': <TokenType.FALSE: 'FALSE'>, 'FETCH': <TokenType.FETCH: 'FETCH'>, 'FILTER': <TokenType.FILTER: 'FILTER'>, 'FIRST': <TokenType.FIRST: 'FIRST'>, 'FULL': <TokenType.FULL: 'FULL'>, 'FUNCTION': <TokenType.FUNCTION: 'FUNCTION'>, 'FOR': <TokenType.FOR: 'FOR'>, 'FOREIGN KEY': <TokenType.FOREIGN_KEY: 'FOREIGN_KEY'>, 'FORMAT': <TokenType.FORMAT: 'FORMAT'>, 'FROM': <TokenType.FROM: 'FROM'>, 'GEOGRAPHY': <TokenType.GEOGRAPHY: 'GEOGRAPHY'>, 'GEOMETRY': <TokenType.GEOMETRY: 'GEOMETRY'>, 'GLOB': <TokenType.GLOB: 'GLOB'>, 'GROUP BY': <TokenType.GROUP_BY: 'GROUP_BY'>, 'GROUPING SETS': <TokenType.GROUPING_SETS: 'GROUPING_SETS'>, 'HAVING': <TokenType.HAVING: 'HAVING'>, 'ILIKE': <TokenType.ILIKE: 'ILIKE'>, 'IN': <TokenType.IN: 'IN'>, 'INDEX': <TokenType.INDEX: 'INDEX'>, 'INET': <TokenType.INET: 'INET'>, 'INNER': <TokenType.INNER: 'INNER'>, 'INSERT': <TokenType.INSERT: 'INSERT'>, 'INTERVAL': <TokenType.INTERVAL: 'INTERVAL'>, 'INTERSECT': <TokenType.INTERSECT: 'INTERSECT'>, 'INTO': <TokenType.INTO: 'INTO'>, 'IS': <TokenType.IS: 'IS'>, 'ISNULL': <TokenType.ISNULL: 'ISNULL'>, 'JOIN': <TokenType.JOIN: 'JOIN'>, 'KEEP': <TokenType.KEEP: 'KEEP'>, 'KILL': <TokenType.KILL: 'KILL'>, 'LATERAL': <TokenType.LATERAL: 'LATERAL'>, 'LEFT': <TokenType.LEFT: 'LEFT'>, 'LIKE': <TokenType.LIKE: 'LIKE'>, 'LIMIT': <TokenType.LIMIT: 'LIMIT'>, 'LOAD': <TokenType.LOAD: 'LOAD'>, 'LOCK': <TokenType.LOCK: 'LOCK'>, 'MERGE': <TokenType.MERGE: 'MERGE'>, 'NATURAL': <TokenType.NATURAL: 'NATURAL'>, 'NEXT': <TokenType.NEXT: 'NEXT'>, 'NOT': <TokenType.NOT: 'NOT'>, 'NOTNULL': <TokenType.NOTNULL: 'NOTNULL'>, 'NULL': <TokenType.NULL: 'NULL'>, 'OBJECT': <TokenType.OBJECT: 'OBJECT'>, 'OFFSET': <TokenType.OFFSET: 'OFFSET'>, 'ON': <TokenType.ON: 'ON'>, 'OR': <TokenType.OR: 'OR'>, 'XOR': <TokenType.XOR: 'XOR'>, 'ORDER BY': <TokenType.ORDER_BY: 'ORDER_BY'>, 'ORDINALITY': <TokenType.ORDINALITY: 'ORDINALITY'>, 'OUTER': <TokenType.OUTER: 'OUTER'>, 'OVER': <TokenType.OVER: 'OVER'>, 'OVERLAPS': <TokenType.OVERLAPS: 'OVERLAPS'>, 'OVERWRITE': <TokenType.OVERWRITE: 'OVERWRITE'>, 'PARTITION': <TokenType.PARTITION: 'PARTITION'>, 'PARTITION BY': <TokenType.PARTITION_BY: 'PARTITION_BY'>, 'PARTITIONED BY': <TokenType.PARTITION_BY: 'PARTITION_BY'>, 'PARTITIONED_BY': <TokenType.PARTITION_BY: 'PARTITION_BY'>, 'PERCENT': <TokenType.PERCENT: 'PERCENT'>, 'PIVOT': <TokenType.PIVOT: 'PIVOT'>, 'PRAGMA': <TokenType.PRAGMA: 'PRAGMA'>, 'PRIMARY KEY': <TokenType.PRIMARY_KEY: 'PRIMARY_KEY'>, 'PROCEDURE': <TokenType.PROCEDURE: 'PROCEDURE'>, 'QUALIFY': <TokenType.QUALIFY: 'QUALIFY'>, 'RANGE': <TokenType.RANGE: 'RANGE'>, 'RECURSIVE': <TokenType.RECURSIVE: 'RECURSIVE'>, 'REGEXP': <TokenType.RLIKE: 'RLIKE'>, 'REPLACE': <TokenType.REPLACE: 'REPLACE'>, 'RETURNING': <TokenType.RETURNING: 'RETURNING'>, 'REFERENCES': <TokenType.REFERENCES: 'REFERENCES'>, 'RIGHT': <TokenType.RIGHT: 'RIGHT'>, 'RLIKE': <TokenType.RLIKE: 'RLIKE'>, 'ROLLBACK': <TokenType.ROLLBACK: 'ROLLBACK'>, 'ROLLUP': <TokenType.ROLLUP: 'ROLLUP'>, 'ROW': <TokenType.ROW: 'ROW'>, 'ROWS': <TokenType.ROWS: 'ROWS'>, 'SCHEMA': <TokenType.SCHEMA: 'SCHEMA'>, 'SELECT': <TokenType.SELECT: 'SELECT'>, 'SEMI': <TokenType.SEMI: 'SEMI'>, 'SET': <TokenType.SET: 'SET'>, 'SETTINGS': <TokenType.SETTINGS: 'SETTINGS'>, 'SHOW': <TokenType.SHOW: 'SHOW'>, 'SIMILAR TO': <TokenType.SIMILAR_TO: 'SIMILAR_TO'>, 'SOME': <TokenType.SOME: 'SOME'>, 'SORT BY': <TokenType.SORT_BY: 'SORT_BY'>, 'START WITH': <TokenType.START_WITH: 'START_WITH'>, 'TABLE': <TokenType.TABLE: 'TABLE'>, 'TABLESAMPLE': <TokenType.TABLE_SAMPLE: 'TABLE_SAMPLE'>, 'TEMP': <TokenType.TEMPORARY: 'TEMPORARY'>, 'TEMPORARY': <TokenType.TEMPORARY: 'TEMPORARY'>, 'THEN': <TokenType.THEN: 'THEN'>, 'TRUE': <TokenType.TRUE: 'TRUE'>, 'TRUNCATE': <TokenType.TRUNCATE: 'TRUNCATE'>, 'UNION': <TokenType.UNION: 'UNION'>, 'UNKNOWN': <TokenType.UNKNOWN: 'UNKNOWN'>, 'UNNEST': <TokenType.UNNEST: 'UNNEST'>, 'UNPIVOT': <TokenType.UNPIVOT: 'UNPIVOT'>, 'UPDATE': <TokenType.UPDATE: 'UPDATE'>, 'USE': <TokenType.USE: 'USE'>, 'USING': <TokenType.USING: 'USING'>, 'UUID': <TokenType.UUID: 'UUID'>, 'VALUES': <TokenType.VALUES: 'VALUES'>, 'VIEW': <TokenType.VIEW: 'VIEW'>, 'VOLATILE': <TokenType.VOLATILE: 'VOLATILE'>, 'WHEN': <TokenType.WHEN: 'WHEN'>, 'WHERE': <TokenType.WHERE: 'WHERE'>, 'WINDOW': <TokenType.WINDOW: 'WINDOW'>, 'WITH': <TokenType.WITH: 'WITH'>, 'APPLY': <TokenType.APPLY: 'APPLY'>, 'ARRAY': <TokenType.ARRAY: 'ARRAY'>, 'BIT': <TokenType.BIT: 'BIT'>, 'BOOL': <TokenType.BOOLEAN: 'BOOLEAN'>, 'BOOLEAN': <TokenType.BOOLEAN: 'BOOLEAN'>, 'BYTE': <TokenType.TINYINT: 'TINYINT'>, 'MEDIUMINT': <TokenType.MEDIUMINT: 'MEDIUMINT'>, 'INT1': <TokenType.TINYINT: 'TINYINT'>, 'TINYINT': <TokenType.TINYINT: 'TINYINT'>, 'INT16': <TokenType.SMALLINT: 'SMALLINT'>, 'SHORT': <TokenType.SMALLINT: 'SMALLINT'>, 'SMALLINT': <TokenType.SMALLINT: 'SMALLINT'>, 'INT128': <TokenType.INT128: 'INT128'>, 'HUGEINT': <TokenType.INT128: 'INT128'>, 'INT2': <TokenType.SMALLINT: 'SMALLINT'>, 'INTEGER': <TokenType.INT: 'INT'>, 'INT': <TokenType.INT: 'INT'>, 'INT4': <TokenType.INT: 'INT'>, 'INT32': <TokenType.INT: 'INT'>, 'INT64': <TokenType.BIGINT: 'BIGINT'>, 'LONG': <TokenType.BIGINT: 'BIGINT'>, 'BIGINT': <TokenType.BIGINT: 'BIGINT'>, 'INT8': <TokenType.TINYINT: 'TINYINT'>, 'DEC': <TokenType.DECIMAL: 'DECIMAL'>, 'DECIMAL': <TokenType.DECIMAL: 'DECIMAL'>, 'BIGDECIMAL': <TokenType.BIGDECIMAL: 'BIGDECIMAL'>, 'BIGNUMERIC': <TokenType.BIGDECIMAL: 'BIGDECIMAL'>, 'MAP': <TokenType.MAP: 'MAP'>, 'NULLABLE': <TokenType.NULLABLE: 'NULLABLE'>, 'NUMBER': <TokenType.DECIMAL: 'DECIMAL'>, 'NUMERIC': <TokenType.DECIMAL: 'DECIMAL'>, 'FIXED': <TokenType.DECIMAL: 'DECIMAL'>, 'REAL': <TokenType.FLOAT: 'FLOAT'>, 'FLOAT': <TokenType.FLOAT: 'FLOAT'>, 'FLOAT4': <TokenType.FLOAT: 'FLOAT'>, 'FLOAT8': <TokenType.DOUBLE: 'DOUBLE'>, 'DOUBLE': <TokenType.DOUBLE: 'DOUBLE'>, 'DOUBLE PRECISION': <TokenType.DOUBLE: 'DOUBLE'>, 'JSON': <TokenType.JSON: 'JSON'>, 'CHAR': <TokenType.CHAR: 'CHAR'>, 'CHARACTER': <TokenType.CHAR: 'CHAR'>, 'NCHAR': <TokenType.NCHAR: 'NCHAR'>, 'VARCHAR': <TokenType.VARCHAR: 'VARCHAR'>, 'VARCHAR2': <TokenType.VARCHAR: 'VARCHAR'>, 'NVARCHAR': <TokenType.NVARCHAR: 'NVARCHAR'>, 'NVARCHAR2': <TokenType.NVARCHAR: 'NVARCHAR'>, 'BPCHAR': <TokenType.BPCHAR: 'BPCHAR'>, 'STR': <TokenType.TEXT: 'TEXT'>, 'STRING': <TokenType.TEXT: 'TEXT'>, 'TEXT': <TokenType.TEXT: 'TEXT'>, 'LONGTEXT': <TokenType.LONGTEXT: 'LONGTEXT'>, 'MEDIUMTEXT': <TokenType.MEDIUMTEXT: 'MEDIUMTEXT'>, 'TINYTEXT': <TokenType.TINYTEXT: 'TINYTEXT'>, 'CLOB': <TokenType.TEXT: 'TEXT'>, 'LONGVARCHAR': <TokenType.TEXT: 'TEXT'>, 'BINARY': <TokenType.BINARY: 'BINARY'>, 'BLOB': <TokenType.VARBINARY: 'VARBINARY'>, 'LONGBLOB': <TokenType.LONGBLOB: 'LONGBLOB'>, 'MEDIUMBLOB': <TokenType.MEDIUMBLOB: 'MEDIUMBLOB'>, 'TINYBLOB': <TokenType.TINYBLOB: 'TINYBLOB'>, 'BYTEA': <TokenType.VARBINARY: 'VARBINARY'>, 'VARBINARY': <TokenType.VARBINARY: 'VARBINARY'>, 'TIME': <TokenType.TIME: 'TIME'>, 'TIMETZ': <TokenType.TIMETZ: 'TIMETZ'>, 'TIMESTAMP': <TokenType.TIMESTAMP: 'TIMESTAMP'>, 'TIMESTAMPTZ': <TokenType.TIMESTAMPTZ: 'TIMESTAMPTZ'>, 'TIMESTAMPLTZ': <TokenType.TIMESTAMPLTZ: 'TIMESTAMPLTZ'>, 'DATE': <TokenType.DATE: 'DATE'>, 'DATETIME': <TokenType.DATETIME: 'DATETIME'>, 'INT4RANGE': <TokenType.INT4RANGE: 'INT4RANGE'>, 'INT4MULTIRANGE': <TokenType.INT4MULTIRANGE: 'INT4MULTIRANGE'>, 'INT8RANGE': <TokenType.INT8RANGE: 'INT8RANGE'>, 'INT8MULTIRANGE': <TokenType.INT8MULTIRANGE: 'INT8MULTIRANGE'>, 'NUMRANGE': <TokenType.NUMRANGE: 'NUMRANGE'>, 'NUMMULTIRANGE': <TokenType.NUMMULTIRANGE: 'NUMMULTIRANGE'>, 'TSRANGE': <TokenType.TSRANGE: 'TSRANGE'>, 'TSMULTIRANGE': <TokenType.TSMULTIRANGE: 'TSMULTIRANGE'>, 'TSTZRANGE': <TokenType.TSTZRANGE: 'TSTZRANGE'>, 'TSTZMULTIRANGE': <TokenType.TSTZMULTIRANGE: 'TSTZMULTIRANGE'>, 'DATERANGE': <TokenType.DATERANGE: 'DATERANGE'>, 'DATEMULTIRANGE': <TokenType.DATEMULTIRANGE: 'DATEMULTIRANGE'>, 'UNIQUE': <TokenType.UNIQUE: 'UNIQUE'>, 'STRUCT': <TokenType.STRUCT: 'STRUCT'>, 'SEQUENCE': <TokenType.SEQUENCE: 'SEQUENCE'>, 'VARIANT': <TokenType.VARIANT: 'VARIANT'>, 'ALTER': <TokenType.ALTER: 'ALTER'>, 'ANALYZE': <TokenType.COMMAND: 'COMMAND'>, 'CALL': <TokenType.COMMAND: 'COMMAND'>, 'COMMENT': <TokenType.COMMENT: 'COMMENT'>, 'COPY': <TokenType.COMMAND: 'COMMAND'>, 'EXPLAIN': <TokenType.COMMAND: 'COMMAND'>, 'GRANT': <TokenType.COMMAND: 'COMMAND'>, 'OPTIMIZE': <TokenType.COMMAND: 'COMMAND'>, 'PREPARE': <TokenType.COMMAND: 'COMMAND'>, 'VACUUM': <TokenType.COMMAND: 'COMMAND'>, 'USER-DEFINED': <TokenType.USERDEFINED: 'USERDEFINED'>, 'FOR VERSION': <TokenType.VERSION_SNAPSHOT: 'VERSION_SNAPSHOT'>, 'FOR TIMESTAMP': <TokenType.TIMESTAMP_SNAPSHOT: 'TIMESTAMP_SNAPSHOT'>}
WHITE_SPACE: Dict[Optional[str], TokenType] =
{' ': <TokenType.SPACE: 'SPACE'>, '\t': <TokenType.SPACE: 'SPACE'>, '\n': <TokenType.BREAK: 'BREAK'>, '\r': <TokenType.BREAK: 'BREAK'>}
COMMANDS =
{<TokenType.COMMAND: 'COMMAND'>, <TokenType.EXECUTE: 'EXECUTE'>, <TokenType.SHOW: 'SHOW'>, <TokenType.FETCH: 'FETCH'>}
COMMAND_PREFIX_TOKENS =
{<TokenType.SEMICOLON: 'SEMICOLON'>, <TokenType.BEGIN: 'BEGIN'>}
def
reset(self) -> None:
931 def reset(self) -> None: 932 self.sql = "" 933 self.size = 0 934 self.tokens: t.List[Token] = [] 935 self._start = 0 936 self._current = 0 937 self._line = 1 938 self._col = 0 939 self._comments: t.List[str] = [] 940 941 self._char = "" 942 self._end = False 943 self._peek = "" 944 self._prev_token_line = -1
946 def tokenize(self, sql: str) -> t.List[Token]: 947 """Returns a list of tokens corresponding to the SQL string `sql`.""" 948 if USE_RS_TOKENIZER: 949 return self.tokenize_rs(sql) 950 951 self.reset() 952 self.sql = sql 953 self.size = len(sql) 954 955 try: 956 self._scan() 957 except Exception as e: 958 start = max(self._current - 50, 0) 959 end = min(self._current + 50, self.size - 1) 960 context = self.sql[start:end] 961 raise TokenError(f"Error tokenizing '{context}'") from e 962 963 return self.tokens
Returns a list of tokens corresponding to the SQL string sql
.
1360 def tokenize_rs(self, sql: str) -> t.List[Token]: 1361 if not self._RS_TOKENIZER: 1362 raise SqlglotError("Rust tokenizer is not available") 1363 1364 try: 1365 tokens = self._RS_TOKENIZER.tokenize(sql, self._rs_dialect_settings) 1366 for token in tokens: 1367 token.token_type = _ALL_TOKEN_TYPES[token.token_type_index] 1368 return tokens 1369 except Exception as e: 1370 raise TokenError(str(e))