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Copy pathtokens.py
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627 lines (580 loc) · 24.3 KB
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from __future__ import annotations
import typing as t
from sqlglot import tokenizer_core
from sqlglot.trie import new_trie
from sqlglot.tokenizer_core import Token, TokenizerCore, TokenType
# The sqlglotc distribution ships no importable `sqlglotc` module; it overlays
# compiled .so files onto sqlglot's modules, so detect it via the compiled core.
SQLGLOTC_INSTALLED = not getattr(tokenizer_core, "__file__", "py").endswith(".py")
try:
import sqlglotrs # type: ignore # noqa: F401
if not SQLGLOTC_INSTALLED:
import warnings
warnings.warn(
"sqlglot[rs] is deprecated and no longer compatible with sqlglot. "
"Please use sqlglotc instead for faster parsing: pip install sqlglot[c]",
)
except ImportError:
pass
if t.TYPE_CHECKING:
from sqlglot.dialects.dialect import DialectType
def _convert_quotes(arr: list[str | tuple[str, str]]) -> dict[str, str]:
return dict((item, item) if isinstance(item, str) else (item[0], item[1]) for item in arr)
def _quotes_to_format(
token_type: TokenType, arr: list[str | tuple[str, str]]
) -> dict[str, tuple[str, TokenType]]:
return {k: (v, token_type) for k, v in _convert_quotes(arr).items()}
class _TokenizerBase:
QUOTES: t.ClassVar[list[tuple[str, str] | str]]
IDENTIFIERS: t.ClassVar[list[str | tuple[str, str]]]
BIT_STRINGS: t.ClassVar[list[str | tuple[str, str]]]
BYTE_STRINGS: t.ClassVar[list[str | tuple[str, str]]]
HEX_STRINGS: t.ClassVar[list[str | tuple[str, str]]]
NATIONAL_RAW_STRINGS: t.ClassVar[list[str | tuple[str, str]]]
RAW_STRINGS: t.ClassVar[list[str | tuple[str, str]]]
HEREDOC_STRINGS: t.ClassVar[list[str | tuple[str, str]]]
UNICODE_STRINGS: t.ClassVar[list[str | tuple[str, str]]]
STRING_ESCAPES: t.ClassVar[list[str]]
BYTE_STRING_ESCAPES: t.ClassVar[list[str]]
IDENTIFIER_ESCAPES: t.ClassVar[list[str]]
HINT_START: t.ClassVar[str]
KEYWORDS: t.ClassVar[dict[str, TokenType]]
SINGLE_TOKENS: t.ClassVar[dict[str, TokenType]]
NUMERIC_LITERALS: t.ClassVar[dict[str, str]]
VAR_SINGLE_TOKENS: t.ClassVar[set[str]]
COMMANDS: t.ClassVar[set[TokenType]]
COMMAND_PREFIX_TOKENS: t.ClassVar[set[TokenType]]
HEREDOC_TAG_IS_IDENTIFIER: t.ClassVar[bool]
STRING_ESCAPES_ALLOWED_IN_RAW_STRINGS: t.ClassVar[bool]
NUMERIC_ESCAPES: t.ClassVar[dict[str, tuple[int, int, int, int]]]
DROP_UNKNOWN_ESCAPES: t.ClassVar[bool]
NUMERIC_ESCAPES_ARE_BYTES: t.ClassVar[bool]
LONE_SURROGATE_REPLACEMENT: t.ClassVar[str]
NESTED_COMMENTS: t.ClassVar[bool]
DASH_COMMENT_REQUIRES_BOUNDARY: t.ClassVar[bool]
COMMENTS_TERMINATE_AT_NEWLINE_ONLY: t.ClassVar[bool]
TOKENS_PRECEDING_HINT: t.ClassVar[set[TokenType]]
HEREDOC_STRING_ALTERNATIVE: t.ClassVar[TokenType]
COMMENTS: t.ClassVar[list[str | tuple[str, str]]]
_QUOTES: t.ClassVar[dict[str, str]]
_IDENTIFIERS: t.ClassVar[dict[str, str]]
_FORMAT_STRINGS: t.ClassVar[dict[str, tuple[str, TokenType]]]
_STRING_ESCAPES: t.ClassVar[set[str]]
_BYTE_STRING_ESCAPES: t.ClassVar[set[str]]
_IDENTIFIER_ESCAPES: t.ClassVar[set[str]]
_COMMENTS: t.ClassVar[dict[str, str | None]]
_KEYWORD_TRIE: t.ClassVar[dict[str | int, object]]
@classmethod
def __init_subclass__(cls, **kwargs: t.Any) -> None:
super().__init_subclass__(**kwargs)
cls._QUOTES = _convert_quotes(cls.QUOTES)
cls._IDENTIFIERS = _convert_quotes(cls.IDENTIFIERS)
cls._FORMAT_STRINGS = {
**{
p + s: (e, TokenType.NATIONAL_STRING)
for s, e in cls._QUOTES.items()
for p in ("n", "N")
},
**_quotes_to_format(TokenType.BIT_STRING, cls.BIT_STRINGS),
**_quotes_to_format(TokenType.BYTE_STRING, cls.BYTE_STRINGS),
**_quotes_to_format(TokenType.HEX_STRING, cls.HEX_STRINGS),
**_quotes_to_format(TokenType.NATIONAL_RAW_STRING, cls.NATIONAL_RAW_STRINGS),
**_quotes_to_format(TokenType.RAW_STRING, cls.RAW_STRINGS),
**_quotes_to_format(TokenType.HEREDOC_STRING, cls.HEREDOC_STRINGS),
**_quotes_to_format(TokenType.UNICODE_STRING, cls.UNICODE_STRINGS),
}
if not any(
"BYTE_STRING_ESCAPES" in k.__dict__ for k in cls.__mro__ if k.__module__ != __name__
):
cls.BYTE_STRING_ESCAPES = cls.STRING_ESCAPES.copy()
cls._STRING_ESCAPES = set(cls.STRING_ESCAPES)
cls._BYTE_STRING_ESCAPES = set(cls.BYTE_STRING_ESCAPES)
cls._IDENTIFIER_ESCAPES = set(cls.IDENTIFIER_ESCAPES)
cls._COMMENTS = {
**{c: None for c in cls.COMMENTS if isinstance(c, str)},
**{c[0]: c[1] for c in cls.COMMENTS if not isinstance(c, str)},
"{#": "#}", # Ensure Jinja comments are tokenized correctly in all dialects
}
if cls.HINT_START in cls.KEYWORDS:
cls._COMMENTS[cls.HINT_START] = "*/"
cls._KEYWORD_TRIE = new_trie(
key.upper()
for key in (
*cls.KEYWORDS,
*cls._COMMENTS,
*cls._QUOTES,
*cls._FORMAT_STRINGS,
)
if " " in key or any(single in key for single in cls.SINGLE_TOKENS)
)
class Tokenizer(_TokenizerBase):
SINGLE_TOKENS = {
"(": TokenType.L_PAREN,
")": TokenType.R_PAREN,
"[": TokenType.L_BRACKET,
"]": TokenType.R_BRACKET,
"{": TokenType.L_BRACE,
"}": TokenType.R_BRACE,
"&": TokenType.AMP,
"^": TokenType.CARET,
":": TokenType.COLON,
",": TokenType.COMMA,
".": TokenType.DOT,
"-": TokenType.DASH,
"=": TokenType.EQ,
">": TokenType.GT,
"<": TokenType.LT,
"%": TokenType.MOD,
"!": TokenType.NOT,
"|": TokenType.PIPE,
"+": TokenType.PLUS,
";": TokenType.SEMICOLON,
"/": TokenType.SLASH,
"\\": TokenType.BACKSLASH,
"*": TokenType.STAR,
"~": TokenType.TILDE,
"?": TokenType.PLACEHOLDER,
"@": TokenType.PARAMETER,
"#": TokenType.HASH,
# Used for breaking a var like x'y' but nothing else the token type doesn't matter
"'": TokenType.UNKNOWN,
"`": TokenType.UNKNOWN,
'"': TokenType.UNKNOWN,
}
BIT_STRINGS: t.ClassVar[list[str | tuple[str, str]]] = []
BYTE_STRINGS: t.ClassVar[list[str | tuple[str, str]]] = []
HEX_STRINGS: t.ClassVar[list[str | tuple[str, str]]] = []
NATIONAL_RAW_STRINGS: t.ClassVar[list[str | tuple[str, str]]] = []
RAW_STRINGS: t.ClassVar[list[str | tuple[str, str]]] = []
HEREDOC_STRINGS: t.ClassVar[list[str | tuple[str, str]]] = []
UNICODE_STRINGS: t.ClassVar[list[str | tuple[str, str]]] = []
IDENTIFIERS: t.ClassVar[list[str | tuple[str, str]]] = ['"']
QUOTES: t.ClassVar[list[tuple[str, str] | str]] = ["'"]
STRING_ESCAPES: t.ClassVar[list[str]] = ["'"]
BYTE_STRING_ESCAPES: t.ClassVar[list[str]] = []
VAR_SINGLE_TOKENS: t.ClassVar[set[str]] = set()
# The strings in this list can always be used as escapes, regardless of the surrounding
# identifier delimiters. By default, the closing delimiter is assumed to also act as an
# identifier escape, e.g. if we use double-quotes, then they also act as escapes: "x"""
IDENTIFIER_ESCAPES: t.ClassVar[list[str]] = []
# Whether the heredoc tags follow the same lexical rules as unquoted identifiers
HEREDOC_TAG_IS_IDENTIFIER = False
# Token that we'll generate as a fallback if the heredoc prefix doesn't correspond to a heredoc
HEREDOC_STRING_ALTERNATIVE = TokenType.VAR
# Whether string escape characters function as such when placed within raw strings
STRING_ESCAPES_ALLOWED_IN_RAW_STRINGS = True
# Maps the char after a backslash to (base, min digits, max digits, max value) for escape
# sequences that encode a code point, e.g. {"x": (16, 2, 2, 0xFF)} decodes '\x41' as 'A'.
# Digits are read until the next one would exceed the max value; if fewer than the min digits
# are read, the sequence isn't decoded. Octal escapes, e.g. '\101', are keyed by "0".
NUMERIC_ESCAPES: t.ClassVar[dict[str, tuple[int, int, int, int]]] = {}
# Whether the backslash is dropped from escape sequences that aren't otherwise decoded,
# e.g. '\z' is 'z'
DROP_UNKNOWN_ESCAPES = False
# Whether byte-valued numeric escapes (e.g. \xhh) are raw bytes, so that consecutive ones are
# decoded together as UTF-8, e.g. '\xC3\xA9' is 'é' instead of 'é'
NUMERIC_ESCAPES_ARE_BYTES = False
# What an unpaired surrogate escape (e.g. \uD800) decodes to. If empty, it isn't decoded
LONE_SURROGATE_REPLACEMENT = ""
NESTED_COMMENTS = True
# Whether "--" only starts a comment when followed by whitespace or a control character
DASH_COMMENT_REQUIRES_BOUNDARY = False
# Whether "--"/"#" line comments are terminated only by "\n", and not also by "\r"
COMMENTS_TERMINATE_AT_NEWLINE_ONLY = False
HINT_START = "/*+"
TOKENS_PRECEDING_HINT = {TokenType.SELECT, TokenType.INSERT, TokenType.UPDATE, TokenType.DELETE}
# Autofilled
_COMMENTS: t.ClassVar[dict[str, str | None]] = {}
_FORMAT_STRINGS: t.ClassVar[dict[str, tuple[str, TokenType]]] = {}
_IDENTIFIERS: t.ClassVar[dict[str, str]] = {}
_IDENTIFIER_ESCAPES: t.ClassVar[set[str]] = set()
_QUOTES: t.ClassVar[dict[str, str]] = {}
_STRING_ESCAPES: t.ClassVar[set[str]] = set()
_BYTE_STRING_ESCAPES: t.ClassVar[set[str]] = set()
_KEYWORD_TRIE: t.ClassVar[dict[str | int, object]] = {}
KEYWORDS: t.ClassVar[dict[str, TokenType]] = {
**{f"{{%{postfix}": TokenType.BLOCK_START for postfix in ("", "+", "-")},
**{f"{prefix}%}}": TokenType.BLOCK_END for prefix in ("", "+", "-")},
**{f"{{{{{postfix}": TokenType.BLOCK_START for postfix in ("+", "-")},
**{f"{prefix}}}}}": TokenType.BLOCK_END for prefix in ("+", "-")},
HINT_START: TokenType.HINT,
"&<": TokenType.AMP_LT,
"&>": TokenType.AMP_GT,
"==": TokenType.EQ,
"::": TokenType.DCOLON,
"?::": TokenType.QDCOLON,
"||": TokenType.DPIPE,
"|>": TokenType.PIPE_GT,
">=": TokenType.GTE,
"<=": TokenType.LTE,
"<>": TokenType.NEQ,
"!=": TokenType.NEQ,
":=": TokenType.COLON_EQ,
"<=>": TokenType.NULLSAFE_EQ,
"->": TokenType.ARROW,
"->>": TokenType.DARROW,
"=>": TokenType.FARROW,
"#>": TokenType.HASH_ARROW,
"#>>": TokenType.DHASH_ARROW,
"<->": TokenType.LR_ARROW,
"<<->>": TokenType.LLRR_ARROW,
"&&": TokenType.DAMP,
"??": TokenType.DQMARK,
"~~~": TokenType.GLOB,
"~~": TokenType.LIKE,
"~~*": TokenType.ILIKE,
"~*": TokenType.IRLIKE,
"-|-": TokenType.ADJACENT,
"ALL": TokenType.ALL,
"AND": TokenType.AND,
"ANTI": TokenType.ANTI,
"ANY": TokenType.ANY,
"ASC": TokenType.ASC,
"AS": TokenType.ALIAS,
"ASOF": TokenType.ASOF,
"AUTOINCREMENT": TokenType.AUTO_INCREMENT,
"AUTO_INCREMENT": TokenType.AUTO_INCREMENT,
"BEGIN": TokenType.BEGIN,
"BETWEEN": TokenType.BETWEEN,
"CACHE": TokenType.CACHE,
"UNCACHE": TokenType.UNCACHE,
"CASE": TokenType.CASE,
"CLUSTER BY": TokenType.CLUSTER_BY,
"COLLATE": TokenType.COLLATE,
"COLUMN": TokenType.COLUMN,
"COMMIT": TokenType.COMMIT,
"CONNECT BY": TokenType.CONNECT_BY,
"CONSTRAINT": TokenType.CONSTRAINT,
"COPY": TokenType.COPY,
"CREATE": TokenType.CREATE,
"CROSS": TokenType.CROSS,
"CUBE": TokenType.CUBE,
"CURRENT_DATE": TokenType.CURRENT_DATE,
"CURRENT_SCHEMA": TokenType.CURRENT_SCHEMA,
"CURRENT_TIME": TokenType.CURRENT_TIME,
"CURRENT_TIMESTAMP": TokenType.CURRENT_TIMESTAMP,
"CURRENT_USER": TokenType.CURRENT_USER,
"CURRENT_CATALOG": TokenType.CURRENT_CATALOG,
"DATABASE": TokenType.DATABASE,
"DEFAULT": TokenType.DEFAULT,
"DELETE": TokenType.DELETE,
"DESC": TokenType.DESC,
"DESCRIBE": TokenType.DESCRIBE,
"DISTINCT": TokenType.DISTINCT,
"DISTRIBUTE BY": TokenType.DISTRIBUTE_BY,
"DIV": TokenType.DIV,
"DROP": TokenType.DROP,
"ELSE": TokenType.ELSE,
"END": TokenType.END,
"ENUM": TokenType.ENUM,
"ESCAPE": TokenType.ESCAPE,
"EXCEPT": TokenType.EXCEPT,
"EXECUTE": TokenType.EXECUTE,
"EXISTS": TokenType.EXISTS,
"FALSE": TokenType.FALSE,
"FETCH": TokenType.FETCH,
"FILTER": TokenType.FILTER,
"FILE": TokenType.FILE,
"FIRST": TokenType.FIRST,
"FULL": TokenType.FULL,
"FUNCTION": TokenType.FUNCTION,
"FOR": TokenType.FOR,
"FOREIGN KEY": TokenType.FOREIGN_KEY,
"FORMAT": TokenType.FORMAT,
"FROM": TokenType.FROM,
"GEOGRAPHY": TokenType.GEOGRAPHY,
"GEOMETRY": TokenType.GEOMETRY,
"GLOB": TokenType.GLOB,
"GROUP BY": TokenType.GROUP_BY,
"GROUPING SETS": TokenType.GROUPING_SETS,
"HAVING": TokenType.HAVING,
"ILIKE": TokenType.ILIKE,
"IN": TokenType.IN,
"INDEX": TokenType.INDEX,
"INET": TokenType.INET,
"INNER": TokenType.INNER,
"INSERT": TokenType.INSERT,
"INTERVAL": TokenType.INTERVAL,
"INTERSECT": TokenType.INTERSECT,
"INTO": TokenType.INTO,
"IS": TokenType.IS,
"ISNULL": TokenType.ISNULL,
"JOIN": TokenType.JOIN,
"KEEP": TokenType.KEEP,
"KILL": TokenType.KILL,
"LATERAL": TokenType.LATERAL,
"LEFT": TokenType.LEFT,
"LIKE": TokenType.LIKE,
"LIMIT": TokenType.LIMIT,
"LOAD": TokenType.LOAD,
"LOCALTIME": TokenType.LOCALTIME,
"LOCALTIMESTAMP": TokenType.LOCALTIMESTAMP,
"LOCK": TokenType.LOCK,
"MERGE": TokenType.MERGE,
"NAMESPACE": TokenType.NAMESPACE,
"NATURAL": TokenType.NATURAL,
"NEXT": TokenType.NEXT,
"NOT": TokenType.NOT,
"NOTNULL": TokenType.NOTNULL,
"NULL": TokenType.NULL,
"OBJECT": TokenType.OBJECT,
"OFFSET": TokenType.OFFSET,
"ON": TokenType.ON,
"OR": TokenType.OR,
"XOR": TokenType.XOR,
"ORDER BY": TokenType.ORDER_BY,
"ORDINALITY": TokenType.ORDINALITY,
"OUT": TokenType.OUT,
"OUTER": TokenType.OUTER,
"OVER": TokenType.OVER,
"OVERLAPS": TokenType.OVERLAPS,
"OVERWRITE": TokenType.OVERWRITE,
"PARTITION": TokenType.PARTITION,
"PARTITION BY": TokenType.PARTITION_BY,
"PARTITIONED BY": TokenType.PARTITION_BY,
"PARTITIONED_BY": TokenType.PARTITION_BY,
"PERCENT": TokenType.PERCENT,
"PIVOT": TokenType.PIVOT,
"PRAGMA": TokenType.PRAGMA,
"PRIMARY KEY": TokenType.PRIMARY_KEY,
"PROCEDURE": TokenType.PROCEDURE,
"OPERATOR": TokenType.OPERATOR,
"QUALIFY": TokenType.QUALIFY,
"RANGE": TokenType.RANGE,
"RECURSIVE": TokenType.RECURSIVE,
"REGEXP": TokenType.RLIKE,
"RENAME": TokenType.RENAME,
"REPLACE": TokenType.REPLACE,
"RETURNING": TokenType.RETURNING,
"REFERENCES": TokenType.REFERENCES,
"RIGHT": TokenType.RIGHT,
"RLIKE": TokenType.RLIKE,
"ROLLBACK": TokenType.ROLLBACK,
"ROLLUP": TokenType.ROLLUP,
"ROW": TokenType.ROW,
"ROWS": TokenType.ROWS,
"SCHEMA": TokenType.SCHEMA,
"SELECT": TokenType.SELECT,
"SEMI": TokenType.SEMI,
"SESSION": TokenType.SESSION,
"SESSION_USER": TokenType.SESSION_USER,
"SET": TokenType.SET,
"SETTINGS": TokenType.SETTINGS,
"SHOW": TokenType.SHOW,
"SIMILAR TO": TokenType.SIMILAR_TO,
"SOME": TokenType.SOME,
"SORT BY": TokenType.SORT_BY,
"SQL SECURITY": TokenType.SQL_SECURITY,
"STRAIGHT_JOIN": TokenType.STRAIGHT_JOIN,
"TABLE": TokenType.TABLE,
"TABLESAMPLE": TokenType.TABLE_SAMPLE,
"TEMP": TokenType.TEMPORARY,
"TEMPORARY": TokenType.TEMPORARY,
"THEN": TokenType.THEN,
"TRUE": TokenType.TRUE,
"TRUNCATE": TokenType.TRUNCATE,
"TRIGGER": TokenType.TRIGGER,
"UNION": TokenType.UNION,
"UNKNOWN": TokenType.UNKNOWN,
"UNNEST": TokenType.UNNEST,
"UNPIVOT": TokenType.UNPIVOT,
"UPDATE": TokenType.UPDATE,
"USE": TokenType.USE,
"USING": TokenType.USING,
"UUID": TokenType.UUID,
"VALUES": TokenType.VALUES,
"VIEW": TokenType.VIEW,
"VOLATILE": TokenType.VOLATILE,
"WHEN": TokenType.WHEN,
"WHERE": TokenType.WHERE,
"WINDOW": TokenType.WINDOW,
"WITH": TokenType.WITH,
"APPLY": TokenType.APPLY,
"ARRAY": TokenType.ARRAY,
"BIT": TokenType.BIT,
"BOOL": TokenType.BOOLEAN,
"BOOLEAN": TokenType.BOOLEAN,
"BYTE": TokenType.TINYINT,
"MEDIUMINT": TokenType.MEDIUMINT,
"INT1": TokenType.TINYINT,
"TINYINT": TokenType.TINYINT,
"INT16": TokenType.SMALLINT,
"SHORT": TokenType.SMALLINT,
"SMALLINT": TokenType.SMALLINT,
"HUGEINT": TokenType.INT128,
"UHUGEINT": TokenType.UINT128,
"INT2": TokenType.SMALLINT,
"INTEGER": TokenType.INT,
"INT": TokenType.INT,
"INT4": TokenType.INT,
"INT32": TokenType.INT,
"INT64": TokenType.BIGINT,
"INT128": TokenType.INT128,
"INT256": TokenType.INT256,
"LONG": TokenType.BIGINT,
"BIGINT": TokenType.BIGINT,
"INT8": TokenType.TINYINT,
"UINT": TokenType.UINT,
"UINT128": TokenType.UINT128,
"UINT256": TokenType.UINT256,
"DEC": TokenType.DECIMAL,
"DECIMAL": TokenType.DECIMAL,
"DECIMAL32": TokenType.DECIMAL32,
"DECIMAL64": TokenType.DECIMAL64,
"DECIMAL128": TokenType.DECIMAL128,
"DECIMAL256": TokenType.DECIMAL256,
"DECFLOAT": TokenType.DECFLOAT,
"BIGDECIMAL": TokenType.BIGDECIMAL,
"BIGNUMERIC": TokenType.BIGDECIMAL,
"BIGNUM": TokenType.BIGNUM,
"LIST": TokenType.LIST,
"MAP": TokenType.MAP,
"NULLABLE": TokenType.NULLABLE,
"NUMBER": TokenType.DECIMAL,
"NUMERIC": TokenType.DECIMAL,
"FIXED": TokenType.DECIMAL,
"REAL": TokenType.FLOAT,
"FLOAT": TokenType.FLOAT,
"FLOAT4": TokenType.FLOAT,
"FLOAT8": TokenType.DOUBLE,
"DOUBLE": TokenType.DOUBLE,
"DOUBLE PRECISION": TokenType.DOUBLE,
"JSON": TokenType.JSON,
"JSONB": TokenType.JSONB,
"CHAR": TokenType.CHAR,
"CHARACTER": TokenType.CHAR,
"CHAR VARYING": TokenType.VARCHAR,
"CHARACTER VARYING": TokenType.VARCHAR,
"NCHAR": TokenType.NCHAR,
"VARCHAR": TokenType.VARCHAR,
"VARCHAR2": TokenType.VARCHAR,
"NVARCHAR": TokenType.NVARCHAR,
"NVARCHAR2": TokenType.NVARCHAR,
"BPCHAR": TokenType.BPCHAR,
"STR": TokenType.TEXT,
"STRING": TokenType.TEXT,
"TEXT": TokenType.TEXT,
"LONGTEXT": TokenType.LONGTEXT,
"MEDIUMTEXT": TokenType.MEDIUMTEXT,
"TINYTEXT": TokenType.TINYTEXT,
"CLOB": TokenType.TEXT,
"LONGVARCHAR": TokenType.TEXT,
"BINARY": TokenType.BINARY,
"BLOB": TokenType.VARBINARY,
"LONGBLOB": TokenType.LONGBLOB,
"MEDIUMBLOB": TokenType.MEDIUMBLOB,
"TINYBLOB": TokenType.TINYBLOB,
"BYTEA": TokenType.VARBINARY,
"VARBINARY": TokenType.VARBINARY,
"TIME": TokenType.TIME,
"TIMETZ": TokenType.TIMETZ,
"TIME_NS": TokenType.TIME_NS,
"TIMESTAMP": TokenType.TIMESTAMP,
"TIMESTAMPTZ": TokenType.TIMESTAMPTZ,
"TIMESTAMPLTZ": TokenType.TIMESTAMPLTZ,
"TIMESTAMP_LTZ": TokenType.TIMESTAMPLTZ,
"TIMESTAMPNTZ": TokenType.TIMESTAMPNTZ,
"TIMESTAMP_NTZ": TokenType.TIMESTAMPNTZ,
"DATE": TokenType.DATE,
"DATETIME": TokenType.DATETIME,
"INT4RANGE": TokenType.INT4RANGE,
"INT4MULTIRANGE": TokenType.INT4MULTIRANGE,
"INT8RANGE": TokenType.INT8RANGE,
"INT8MULTIRANGE": TokenType.INT8MULTIRANGE,
"NUMRANGE": TokenType.NUMRANGE,
"NUMMULTIRANGE": TokenType.NUMMULTIRANGE,
"TSRANGE": TokenType.TSRANGE,
"TSMULTIRANGE": TokenType.TSMULTIRANGE,
"TSTZRANGE": TokenType.TSTZRANGE,
"TSTZMULTIRANGE": TokenType.TSTZMULTIRANGE,
"DATERANGE": TokenType.DATERANGE,
"DATEMULTIRANGE": TokenType.DATEMULTIRANGE,
"UNIQUE": TokenType.UNIQUE,
"VECTOR": TokenType.VECTOR,
"STRUCT": TokenType.STRUCT,
"SEQUENCE": TokenType.SEQUENCE,
"VARIANT": TokenType.VARIANT,
"ALTER": TokenType.ALTER,
"ANALYZE": TokenType.ANALYZE,
"CALL": TokenType.COMMAND,
"COMMENT": TokenType.COMMENT,
"EXPLAIN": TokenType.COMMAND,
"GRANT": TokenType.GRANT,
"REVOKE": TokenType.REVOKE,
"OPTIMIZE": TokenType.COMMAND,
"PREPARE": TokenType.COMMAND,
"VACUUM": TokenType.COMMAND,
"USER-DEFINED": TokenType.USERDEFINED,
}
COMMANDS = {
TokenType.COMMAND,
TokenType.EXECUTE,
TokenType.FETCH,
TokenType.SHOW,
TokenType.RENAME,
}
COMMAND_PREFIX_TOKENS = {TokenType.SEMICOLON, TokenType.BEGIN}
# Handle numeric literals like in hive (3L = BIGINT)
NUMERIC_LITERALS: t.ClassVar[dict[str, str]] = {}
# In tokenizers like JSONPath, dots are always key separators, never decimal points
NUMBERS_CAN_HAVE_DECIMALS: t.ClassVar[bool] = True
COMMENTS = ["--", ("/*", "*/")]
__slots__ = (
"dialect",
"_core",
)
def __init__(self, dialect: DialectType = None) -> None:
from sqlglot.dialects.dialect import Dialect
self.dialect = Dialect.get_or_raise(dialect)
self._core = self._init_core()
def _init_core(self) -> TokenizerCore:
return TokenizerCore(
single_tokens=self.SINGLE_TOKENS,
keywords=self.KEYWORDS,
quotes=self._QUOTES,
format_strings=self._FORMAT_STRINGS,
identifiers=self._IDENTIFIERS,
comments=self._COMMENTS,
string_escapes=self._STRING_ESCAPES,
byte_string_escapes=self._BYTE_STRING_ESCAPES,
identifier_escapes=self._IDENTIFIER_ESCAPES,
commands=self.COMMANDS,
command_prefix_tokens=self.COMMAND_PREFIX_TOKENS,
nested_comments=self.NESTED_COMMENTS,
dash_comment_requires_boundary=self.DASH_COMMENT_REQUIRES_BOUNDARY,
comments_terminate_at_newline_only=self.COMMENTS_TERMINATE_AT_NEWLINE_ONLY,
hint_start=self.HINT_START,
tokens_preceding_hint=self.TOKENS_PRECEDING_HINT,
has_bit_strings=bool(self.BIT_STRINGS),
has_hex_strings=bool(self.HEX_STRINGS),
numeric_literals=self.NUMERIC_LITERALS,
var_single_tokens=self.VAR_SINGLE_TOKENS,
string_escapes_allowed_in_raw_strings=self.STRING_ESCAPES_ALLOWED_IN_RAW_STRINGS,
heredoc_tag_is_identifier=self.HEREDOC_TAG_IS_IDENTIFIER,
heredoc_string_alternative=self.HEREDOC_STRING_ALTERNATIVE,
keyword_trie=self._KEYWORD_TRIE,
numbers_can_be_underscore_separated=self.dialect.NUMBERS_CAN_BE_UNDERSCORE_SEPARATED,
numbers_can_have_decimals=self.NUMBERS_CAN_HAVE_DECIMALS,
identifiers_can_start_with_digit=self.dialect.IDENTIFIERS_CAN_START_WITH_DIGIT,
unescaped_sequences=self.dialect.UNESCAPED_SEQUENCES,
numeric_escapes=self.NUMERIC_ESCAPES,
drop_unknown_escapes=self.DROP_UNKNOWN_ESCAPES,
numeric_escapes_are_bytes=self.NUMERIC_ESCAPES_ARE_BYTES,
byte_strings_are_bytes=self.dialect.BYTE_STRING_IS_BYTES_TYPE,
lone_surrogate_replacement=self.LONE_SURROGATE_REPLACEMENT,
)
def tokenize(self, sql: str) -> list[Token]:
"""Returns a list of tokens corresponding to the SQL string `sql`."""
return self._core.tokenize(sql) # type: ignore
@property
def sql(self) -> str:
"""The SQL string being tokenized."""
return self._core.sql
@property
def size(self) -> int:
"""Length of the SQL string."""
return self._core.size
@property
def tokens(self) -> list[Token]:
"""The list of tokens produced by tokenization."""
return self._core.tokens