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