OwgdZddlmZddlmZddlmZddlZddlZddl m Z e rddl m Z m Z dZdd Zdd Zdd Z dd Zdd Zy)z6 :func:`~pandas.eval` source string parsing functions ) annotations)StringIO) iskeywordN) TYPE_CHECKING)HashableIteratordc |jr t|s|Stjj Dcic]\}}|dt j |d}}}|jddddddddd d j|Dcgc]}|j||c}}d |}|jstd |d |Scc}}wcc}w)a= Create valid Python identifiers from any string. Check if name contains any special characters. If it contains any special characters, the special characters will be replaced by a special string and a prefix is added. Raises ------ SyntaxError If the returned name is not a Python valid identifier, raise an exception. This can happen if there is a hashtag in the name, as the tokenizer will than terminate and not find the backtick. But also for characters that fall out of the range of (U+0001..U+007F). __QUESTIONMARK__EXCLAMATIONMARK_ _DOLLARSIGN_ _EUROSIGN_ _DEGREESIGN_ _SINGLEQUOTE_ _DOUBLEQUOTE_) ?!$u€°'"BACKTICK_QUOTED_STRING_zCould not convert 'z' to a valid Python identifier.) isidentifierrtokenizeEXACT_TOKEN_TYPESitemstokentok_nameupdatejoinget SyntaxError)namechartokvalspecial_characters_replacementss V/var/www/horilla/myenv/lib/python3.12/site-packages/pandas/core/computation/parsing.pycreate_valid_python_identifierr+s  9T? &77==?' D& %..()++'#'$**!$     77PTU377dCU VD $TF +D    /v5TUVV K5'(Vs "C Cc\|\}}|tk(rtjt|fS||fS)a[ Clean up a column name if surrounded by backticks. Backtick quoted string are indicated by a certain tokval value. If a string is a backtick quoted token it will processed by :func:`_create_valid_python_identifier` so that the parser can find this string when the query is executed. In this case the tok will get the NAME tokval. Parameters ---------- tok : tuple of int, str ints correspond to the all caps constants in the tokenize module Returns ------- tok : Tuple[int, str] Either the input or token or the replacement values )BACKTICK_QUOTED_STRINGrNAMEr+)toktoknumr(s r*clean_backtick_quoted_toksr1Is5(NFF ''}}cv td|d}t|d}t|S#t$r|cYSwxYw)a Function to emulate the cleaning of a backtick quoted name. The purpose for this function is to see what happens to the name of identifier if it goes to the process of being parsed a Python code inside a backtick quoted string and than being cleaned (removed of any special characters). Parameters ---------- name : hashable Name to be cleaned. Returns ------- name : hashable Returns the name after tokenizing and cleaning. Notes ----- For some cases, a name cannot be converted to a valid Python identifier. In that case :func:`tokenize_string` raises a SyntaxError. In that case, we just return the name unmodified. If this name was used in the query string (this makes the query call impossible) an error will be raised by :func:`tokenize_backtick_quoted_string` instead, which is not caught and propagates to the user level. `)tokenize_stringnextr+r%)r& tokenizedr(s r*clean_column_namer9csF:#avQK0 i#-f55  s '* 88cJ|D]\}}}}}|dk(s|d}nt||fS)a Creates a token from a backtick quoted string. Moves the token_generator forwards till right after the next backtick. Parameters ---------- token_generator : Iterator[tokenize.TokenInfo] The generator that yields the tokens of the source string (Tuple[int, str]). The generator is at the first token after the backtick (`) source : str The Python source code string. string_start : int This is the start of backtick quoted string inside the source string. Returns ------- tok: Tuple[int, str] The token that represents the backtick quoted string. The integer is equal to BACKTICK_QUOTED_STRING (100). r4r5)r-)token_generatorsource string_startr r(start string_ends r*tokenize_backtick_quoted_stringr@sE4#265!Q S=qJ  "6,z#B BBr2c#Kt|j}tj|}|D]+\}}}}}|dk(r t |||ddz&||f-y#t $r}t d|d|d}~wwxYww)a$ Tokenize a Python source code string. Parameters ---------- source : str The Python source code string. Returns ------- tok_generator : Iterator[Tuple[int, str]] An iterator yielding all tokens with only toknum and tokval (Tuple[ing, str]). r4r5)r=zFailed to parse backticks in 'z'.N)rreadlinergenerate_tokensr@ Exceptionr%)r< line_readerr;r0r(r>r errs r*r6r6s6"++K..{;O(7 !#q! S= X5#V%(Q, &.  !  X!$B6(""MNTWW Xs(;A?A A? A<'A77A<<A?)r&strreturnrG)r/tuple[int, str]rHrI)r&rrHr)r;zIterator[tokenize.TokenInfo]r<rGr=intrHrI)r<rGrHzIterator[tuple[int, str]])__doc__ __future__riorkeywordrr rtypingrcollections.abcrrr-r+r1r9r@r6r2r*rRso#   0f4"JC1C;>CNQCCD!r2