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lexer.cpython-39.pyc
a `{v @ s d Z ddlZddlmZ ddlmZ ddlmZ ddlm Z ddlm Z dd lm Z dd lm Z dd l mZ dd lmZ ed ZedejZedZedejZedZedejejB Zzeddd W n e y edZ dZ Y n0 ddl m Z dZ e dZ!e dZ"e d Z#e d Z$e d Z%e d Z&e d Z'e d!Z(e d"Z)e d#Z*e d$Z+e d%Z,e d&Z-e d'Z.e d(Z/e d)Z0e d*Z1e d+Z2e d,Z3e d-Z4e d.Z5e d/Z6e d0Z7e d1Z8e d2Z9e d3Z:e d4Z;e d5Z<e d6Z=e d7Z>e d8Z?e d9Z@e d:ZAe d;ZBe d<ZCe d=ZDe d>ZEe d?ZFe d@ZGe dAZHe dBZIe dCZJe dDZKe dEZLe dFZMe dGZNe dHZOe dIZPe dJZQe!e9e%e(e1e0e4e:e,e6e-e7e+e5e'e2e)e*e.e/e"e&e#e3e$e8dKZReSdLdM e eRD ZTeUeReUeTksJ dNedOdPVdQdR eWeRdSdT dUD ZXeYeGeIeHe;eLeMeNgZZeYe;eOeIeNgZ[dVdW Z\dXdY Z]dZd[ Z^d\d] Z_d^d_ Z`G d`da daeaZbG dbdc dcecZde G ddde deeaZee G dfdg dgeaZfdhdi ZgG djdk dkecZhG dldm dmeaZidS )nzImplements a Jinja / Python combination lexer. The ``Lexer`` class is used to do some preprocessing. It filters out invalid operators like the bitshift operators we don't allow in templates. It separates template code and python code in expressions. N) literal_eval)deque) itemgetter )implements_iterator)intern) iteritems) text_type)TemplateSyntaxError)LRUCache2 z\s+z (\r\n|\r|\n)z7('([^'\\]*(?:\\.[^'\\]*)*)'|"([^"\\]*(?:\\.[^"\\]*)*)")z (\d+_)*\d+z (?<!\.) # doesn't start with a . (\d+_)*\d+ # digits, possibly _ separated ( (\.(\d+_)*\d+)? # optional fractional part e[+\-]?(\d+_)*\d+ # exponent part | \.(\d+_)*\d+ # required fractional part ) u fööz <unknown>evalz[a-zA-Z_][a-zA-Z0-9_]*F)patternTaddZassigncolonZcommaZdivdoteqfloordivgtZgteqZlbraceZlbracketZlparenltZlteqmodmulnepipepowrbraceZrbracketZrparenZ semicolonsubtildeZ whitespacefloatZintegernamestringoperatorZ block_beginZ block_endZvariable_beginZ variable_endZ raw_beginZraw_endZ comment_beginZ comment_endcommentZlinestatement_beginZlinestatement_endZlinecomment_beginZlinecomment_endZ linecommentdatainitialeof)+-/z//*%z**~[](){}z==z!=>z>=<z<==.:|,;c C s g | ]\}}||fqS r: ).0kvr: r: 0/usr/lib/python3.9/site-packages/jinja2/lexer.py <listcomp> r? zoperators droppedz(%s)r7 c c s | ]}t |V qd S N)reescaper; xr: r: r> <genexpr> r@ rF c C s t | S rA )lenrE r: r: r> <lambda> r@ rI )keyc C sL | t v rt | S tdtdtdtdtdtdtdtdt dt d t d t d i | | S ) Nzbegin of commentzend of commentr" zbegin of statement blockzend of statement blockzbegin of print statementzend of print statementzbegin of line statementzend of line statementztemplate data / textzend of template)reverse_operatorsTOKEN_COMMENT_BEGINTOKEN_COMMENT_END TOKEN_COMMENTTOKEN_LINECOMMENTTOKEN_BLOCK_BEGINTOKEN_BLOCK_ENDTOKEN_VARIABLE_BEGINTOKEN_VARIABLE_ENDTOKEN_LINESTATEMENT_BEGINTOKEN_LINESTATEMENT_END TOKEN_DATA TOKEN_EOFget) token_typer: r: r> _describe_token_type s" rZ c C s | j tkr| jS t| j S )z#Returns a description of the token.)type TOKEN_NAMEvaluerZ )tokenr: r: r> describe_token s r_ c C s2 d| v r&| dd\}}|tkr*|S n| }t|S )z0Like `describe_token` but for token expressions.r6 r )splitr\ rZ )exprr[ r] r: r: r> describe_token_expr s rb c C s t t| S )zsCount the number of newline characters in the string. This is useful for extensions that filter a stream. )rG newline_refindall)r] r: r: r> count_newlines s re c C s t j}t| jt|| jft| jt|| jft| jt|| jfg}| j durp| t| j t d|| j f | j dur| t| j t d|| j f dd t|ddD S )zACompiles all the rules from the environment into a list of rules.Nz ^[ \t\v]*z(?:^|(?<=\S))[^\S\r\n]*c S s g | ]}|d d qS )r Nr: rD r: r: r> r? r@ z!compile_rules.<locals>.<listcomp>T)reverse)rB rC rG comment_start_stringrL block_start_stringrP variable_start_stringrR line_statement_prefixappendrT line_comment_prefixTOKEN_LINECOMMENT_BEGINsorted) environmenterulesr: r: r> compile_rules s: rr c @ s$ e Zd ZdZefddZdd ZdS )FailurezjClass that raises a `TemplateSyntaxError` if called. Used by the `Lexer` to specify known errors. c C s || _ || _d S rA )message error_class)selfrt clsr: r: r> __init__ s zFailure.__init__c C s | | j||d S rA )ru rt )rv linenofilenamer: r: r> __call__ s zFailure.__call__N)__name__ __module__ __qualname____doc__r rx r{ r: r: r: r> rs s rs c @ sT e Zd ZdZdZdd edD \ZZZdd Z dd Z d d Z d d Z dd Z dS )Tokenz Token class.r: c c s | ]}t t|V qd S rA )propertyr rD r: r: r> rF r@ zToken.<genexpr> c C s t | |tt||fS rA )tuple__new__r str)rw ry r[ r] r: r: r> r s z Token.__new__c C s* | j tv rt| j S | j dkr$| jS | j S )Nr )r[ rK r] rv r: r: r> __str__ s z Token.__str__c C s2 | j |krdS d|v r.|dd| j | jgkS dS )zTest a token against a token expression. This can either be a token type or ``'token_type:token_value'``. This can only test against string values and types. Tr6 r F)r[ r` r] rv ra r: r: r> test s z Token.testc G s |D ]}| |r dS qdS )z(Test against multiple token expressions.TF)r )rv iterablera r: r: r> test_any s zToken.test_anyc C s d| j | j| jf S )NzToken(%r, %r, %r))ry r[ r] r r: r: r> __repr__' s zToken.__repr__N)r| r} r~ r __slots__rangery r[ r] r r r r r r: r: r: r> r s r c @ s( e Zd ZdZdd Zdd Zdd ZdS ) TokenStreamIteratorz`The iterator for tokenstreams. Iterate over the stream until the eof token is reached. c C s || _ d S rA )stream)rv r r: r: r> rx 1 s z TokenStreamIterator.__init__c C s | S rA r: r r: r: r> __iter__4 s z TokenStreamIterator.__iter__c C s0 | j j}|jtu r"| j t t| j |S rA )r currentr[ rW close StopIterationnextrv r^ r: r: r> __next__7 s z TokenStreamIterator.__next__N)r| r} r~ r rx r r r: r: r: r> r + s r c @ sz e Zd ZdZdd Zdd Zdd ZeZedd Z d d Z d d Z d ddZ dd Z dd Zdd Zdd Zdd ZdS ) TokenStreamzA token stream is an iterable that yields :class:`Token`\s. The parser however does not iterate over it but calls :meth:`next` to go one token ahead. The current active token is stored as :attr:`current`. c C s> t || _t | _|| _|| _d| _tdtd| _ t | d S )NFr ) iter_iterr _pushedr rz closedr TOKEN_INITIALr r )rv generatorr rz r: r: r> rx G s zTokenStream.__init__c C s t | S rA )r r r: r: r> r P s zTokenStream.__iter__c C s t | jp| jjtuS rA )boolr r r[ rW r r: r: r> __bool__S s zTokenStream.__bool__c C s | S )z Are we at the end of the stream?r: r r: r: r> eosX s zTokenStream.eosc C s | j | dS )z Push a token back to the stream.N)r rk r r: r: r> push] s zTokenStream.pushc C s" t | }| j}| | || _|S )zLook at the next token.)r r r )rv Z old_tokenresultr: r: r> looka s zTokenStream.lookr c C s t |D ] }t| qdS )zGot n tokens ahead.N)r r )rv n_r: r: r> skipi s zTokenStream.skipc C s | j |rt| S dS )zqPerform the token test and return the token if it matched. Otherwise the return value is `None`. N)r r r r r: r: r> next_ifn s zTokenStream.next_ifc C s | |duS )z8Like :meth:`next_if` but only returns `True` or `False`.N)r r r: r: r> skip_ifu s zTokenStream.skip_ifc C sV | j }| jr| j | _ n8| j jturRzt| j| _ W n tyP | Y n0 |S )z|Go one token ahead and return the old one. Use the built-in :func:`next` instead of calling this directly. ) r r popleftr[ rW r r r r )rv rvr: r: r> r y s zTokenStream.__next__c C s" t | jjtd| _d| _d| _dS )zClose the stream.r NT)r r ry rW r r r r: r: r> r s zTokenStream.closec C s~ | j |s^t|}| j jtu r:td| | j j| j| jtd|t | j f | j j| j| jz| j W t | S t | 0 dS )z}Expect a given token type and return it. This accepts the same argument as :meth:`jinja2.lexer.Token.test`. z(unexpected end of template, expected %r.zexpected token %r, got %rN) r r rb r[ rW r ry r rz r_ r r r: r: r> expect s( zTokenStream.expectN)r )r| r} r~ r rx r r Z __nonzero__r r r r r r r r r r r: r: r: r> r @ s r c C sZ | j | j| j| j| j| j| j| j| j| j | j | j f }t |}|du rVt| }|t |< |S )z(Return a lexer which is probably cached.N)rh block_end_stringri variable_end_stringrg comment_end_stringrj rl trim_blocks lstrip_blocksnewline_sequencekeep_trailing_newline _lexer_cacherX Lexer)ro rJ Zlexerr: r: r> get_lexer s$ r c s$ e Zd ZdZdZ fddZ ZS )OptionalLStripzWA special tuple for marking a point in the state that can have lstrip applied. r: c s t t| | |S rA )superr r )rw memberskwargs __class__r: r> r s zOptionalLStrip.__new__)r| r} r~ r r r __classcell__r: r: r r> r s r c @ s> e Zd ZdZdd Zdd Zd ddZdd d Zdd d ZdS )r a Class that implements a lexer for a given environment. Automatically created by the environment class, usually you don't have to do that. Note that the lexer is not automatically bound to an environment. Multiple environments can share the same lexer. c C s t j}dd }ttd fttd fttd ftt d ft t d ft t d fg}t|}|jrTdpVd}|jrf|dnd | _|j| _|j| _d|ddd ||j||j||jf gd d |D ttd d f|d td fgt|d||j||j|f tt fdf|dt dfd fgt |d||j||j|f t dfg| t |d||j!||j!f t"dfg| t#|d||j||j||j|f ttt$df|dt dfd fgt%|dt&dfg| t'|dt(t)fdfgi| _*d S )Nc S s t | t jt jB S rA )rB compileMSrH r: r: r> c s zLexer.__init__.<locals>.cz\n?r z[^ \t]rootz (.*?)(?:%s)r7 z0(?P<raw_begin>%s(\-|\+|)\s*raw\s*(?:\-%s\s*|%s))c S s g | ]\}}d ||f qS )z(?P<%s>%s(\-|\+|))r: )r; r rr: r: r> r? s z"Lexer.__init__.<locals>.<listcomp>#bygroupz.+z(.*?)((?:\-%s\s*|%s)%s)#popz(.)zMissing end of comment tagz(?:\-%s\s*|%s)%sz \-%s\s*|%sz1(.*?)((?:%s(\-|\+|))\s*endraw\s*(?:\-%s\s*|%s%s))z Missing end of raw directivez \s*(\n|$)z(.*?)()(?=\n|$))+rB rC whitespace_reTOKEN_WHITESPACEfloat_re TOKEN_FLOAT integer_re TOKEN_INTEGERname_rer\ string_re TOKEN_STRING operator_reTOKEN_OPERATORrr r r lstrip_unless_rer r joinrh r r rV rL r rN rM rs rP rQ rR r rS TOKEN_RAW_BEGIN TOKEN_RAW_ENDrT rU rm rO TOKEN_LINECOMMENT_ENDrq )rv ro rp r Z tag_rulesZroot_tag_rulesZblock_suffix_rer: r: r> rx s zLexer.__init__c C s t | j|S )z@Called for strings and template data to normalize it to unicode.)rc r r )rv r] r: r: r> _normalize_newlinesa s zLexer._normalize_newlinesNc C s& | ||||}t| |||||S )z:Calls tokeniter + tokenize and wraps it in a token stream.) tokeniterr wrap)rv sourcer rz stater r: r: r> tokenizee s zLexer.tokenizec c sz |D ]n\}}}|t v r qnH|tkr.t}n8|tkr>t}n(|ttfv rPqn|tkrf| |}n |dkrt|}n|t krt |}t r| st d|||n|tkr z$| |dd ddd}W nJ ty } z0t |dd }t ||||W Y d }~n d }~0 0 nJ|tkr8t|d d }n.|tkrTt|d d }n|tkrft| }t|||V qd S ) zThis is called with the stream as returned by `tokenize` and wraps every token in a :class:`Token` and converts the value. keywordz Invalid character in identifierr asciibackslashreplacezunicode-escaper6 Nr r ) ignored_tokensrT rP rU rQ r r rV r r\ r check_ident isidentifierr r encodedecode Exceptionr` stripr intreplacer r r operatorsr ) rv r r rz ry r^ r] rp msgr: r: r> r j sJ & z Lexer.wrapc c sD t |}| }| jr<|r<dD ] }||r |d q<q d|}d}d}dg} |dur|dkr|dv stJ d | |d | j| d } t|} g } | j} d}d }| D ]d\}}}| ||}|du rq| r|t t t fv rqt |tr| }t |tr|d }td d |ddd D }|dkrd| }|t|d d}|f|dd }nj|dkr| dur| ts|dd }|dks|r| ||s|d| f|dd }t|D ]\}}|jtu r|||n|dkrPt | D ]4\}} | dur ||| fV || d7 } qq t d| n:|| } | sh|t vrt||| fV || d| 7 }d}qn| } |t kr.| dkr| d nv| dkr| d n`| dkr| d nJ| dv r.| st!d| |||| " } | | kr.t!d | | f |||| s>|t vrJ||| fV || d7 }| d d dk}|# } |dur|d kr| " nT|dkrt | D ]$\}} | dur| | qqt d | n | | | j| d } n| |kr t d | | } qq|| kr$dS t!d || |f |||qdS )!zThis method tokenizes the text and returns the tokens in a generator. Use this method if you just want to tokenize a template. )z r r r r r N)variableblockz invalid stateZ_beginr Tc s s | ]}|d ur|V qd S rA r: )r; gr: r: r> rF r@ z"Lexer.tokeniter.<locals>.<genexpr> r' r& r z?%r wanted to resolve the token dynamically but no group matchedr0 r1 r. r/ r, r- )r1 r/ r- zunexpected '%s'z unexpected '%s', expected '%s'r zC%r wanted to resolve the new state dynamically but no group matchedz,%r yielded empty string without stack changezunexpected char %r at %d)$r splitlinesr endswithrk r rq rG r matchrS rQ rU isinstancer groupsr r rstripcount groupdictrX rR rfindsearch enumerater rs r RuntimeErrorignore_if_emptygroupr r popend) rv r r rz r linesnewlineposry stackZ statetokensZ source_lengthZbalancing_stackr Znewlines_strippedZ line_startingZregextokensZ new_statemr textZ strip_signstrippedZl_posidxr^ rJ r] r# Z expected_opZpos2r: r: r> r s zLexer.tokeniter)NNN)NN)NN) r| r} r~ r rx r r r r r: r: r: r> r s ,r )jr rB astr collectionsr r! r Z_compatr r r r exceptionsr Zutilsr r r Ur rc r r r IGNORECASEVERBOSEr SyntaxErrorr r Z _identifierr Z TOKEN_ADDZ TOKEN_ASSIGNZ TOKEN_COLONZ TOKEN_COMMAZ TOKEN_DIVZ TOKEN_DOTZTOKEN_EQZTOKEN_FLOORDIVZTOKEN_GTZ TOKEN_GTEQZ TOKEN_LBRACEZTOKEN_LBRACKETZ TOKEN_LPARENZTOKEN_LTZ TOKEN_LTEQZ TOKEN_MODZ TOKEN_MULZTOKEN_NEZ TOKEN_PIPEZ TOKEN_POWZ TOKEN_RBRACEZTOKEN_RBRACKETZ TOKEN_RPARENZTOKEN_SEMICOLONZ TOKEN_SUBZ TOKEN_TILDEr r r r\ r r rP rQ rR rS r r rL rM rN rT rU rm r rO rV r rW r dictrK rG r rn r frozensetr r rZ r_ rb re rr objectrs r r r r r r r r: r: r: r> <module> s " ) (f