| Current File : //lib/python2.7/site-packages/jinja2/compiler.pyc |
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jinja2.compiler
~~~~~~~~~~~~~~~
Compiles nodes into python code.
:copyright: (c) 2010 by the Jinja Team.
:license: BSD, see LICENSE for more details.
i����( t chain( t deepcopy( t iskeyword( t nodes( t EvalContext( t NodeVisitor( t TemplateAssertionError( t Markupt concatt escape( t
range_typet nextt text_typet string_typest iteritemst NativeStringIOt imaps ==t eqs !=t net >t gts >=t gteqt <t lts <=t lteqt ins not int notinR t itemsc s d � � f d � } | S( Ni* c s d S( N( ( ( t x( s3 /usr/lib/python2.7/site-packages/jinja2/compiler.pyt f- s ( ( R ( ( R s3 /usr/lib/python2.7/site-packages/jinja2/compiler.pyt unoptimize_before_dead_code+ s t __closure__c C sc t | t j � s! t d � � n t | | | | | � } | j | � | d k r_ | j j � Sd S( s+ Generate the python source for a node tree.s Can't compile non template nodesN( t
isinstanceR t Templatet TypeErrort
CodeGeneratort visitt Nonet streamt getvalue( t nodet environmentt namet filenameR& t
defer_initt generator( ( s3 /usr/lib/python2.7/site-packages/jinja2/compiler.pyt generate7 s
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C s� | d k s$ | t k s$ | t k r( t St | t t t t t t
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t t f � r� x | D] } t | � ss t Sqs Wt St | t � r� x: t | � D], \ } } t | � s� t St | � s� t Sq� Wt St S( s) Does the node have a safe representation?N( R% t NotImplementedt Ellipsist TrueR t boolt intt floatt complexR
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has_safe_reprt Falset dictR ( t valuet itemt key( ( s3 /usr/lib/python2.7/site-packages/jinja2/compiler.pyR: B s$ $
c C sI t | � } y" x | D] } | j | � q WWn t k
rA n X| j S( s� Check if the names passed are accessed undeclared. The return value
is a set of all the undeclared names from the sequence of names found.
( t UndeclaredNameVisitorR$ t VisitorExitt
undeclared( R t namest visitorR( ( ( s3 /usr/lib/python2.7/site-packages/jinja2/compiler.pyt find_undeclaredX s
t Identifiersc B s2 e Z d Z d � Z d � Z d � Z d � Z RS( s+ Tracks the status of identifiers in frames.c C s@ t � | _ t � | _ t � | _ t � | _ t � | _ d S( N( R8 t declaredt outer_undeclaredRB t declared_locallyt declared_parameter( t self( ( s3 /usr/lib/python2.7/site-packages/jinja2/compiler.pyt __init__h s
c C s$ | j j | � | j j | � d S( s$ Register a special name like `loop`.N( RB t discardRG t add( RK R* ( ( s3 /usr/lib/python2.7/site-packages/jinja2/compiler.pyt add_special{ s c C s/ | | j k s | | j k r" t S| | j k S( s6 Check if a name is declared in this or an outer scope.( RI RJ R1 RG ( RK R* ( ( s3 /usr/lib/python2.7/site-packages/jinja2/compiler.pyt is_declared� s c C s
t | � S( N( R ( RK ( ( s3 /usr/lib/python2.7/site-packages/jinja2/compiler.pyt copy� s ( t __name__t
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t Framec B sP e Z d Z d d � Z d � Z d � Z d d � Z d � Z d � Z e Z
RS( s& Holds compile time information for us.c C s� | | _ t � | _ t | _ t | _ | o3 | j | _ d | _ | rQ | j pT d | _ t
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� | j | _ n d S( N( t eval_ctxRF t identifiersR; t toplevelt rootlevelt require_output_checkR% t buffert blockR8 t assigned_namest parentRG t updateRJ RH RB ( RK RV R^ ( ( s3 /usr/lib/python2.7/site-packages/jinja2/compiler.pyRL � s" c C sZ t j | j � } | j j | j � t j | j j � | _ | j j j | j j � | S( s! Create a copy of the current one.( t objectt __new__t __class__t __dict__R_ RW ( RK t rv( ( s3 /usr/lib/python2.7/site-packages/jinja2/compiler.pyRQ � s
c C s1 t | j � } x | D] } | j | � q Wd S( s� Walk the node and check for identifiers. If the scope is hard (eg:
enforce on a python level) overrides from outer scopes are tracked
differently.
N( t FrameIdentifierVisitorRW R$ ( RK R RD R( ( ( s3 /usr/lib/python2.7/site-packages/jinja2/compiler.pyt inspect� s
c s? | j � � j � j B� j � j B@t � f d � | D� � BS( s� Find all the shadowed names. extra is an iterable of variables
that may be defined with `add_special` which may occour scoped.
c 3 s$ | ] } � j | � r | Vq d S( N( RP ( t .0R ( t i( s3 /usr/lib/python2.7/site-packages/jinja2/compiler.pys <genexpr>� s ( RW RG RH RI RJ R8 ( RK t extra( ( Rh s3 /usr/lib/python2.7/site-packages/jinja2/compiler.pyt
find_shadowed� s
c C s t | j | � S( s Return an inner frame.( RU RV ( RK ( ( s3 /usr/lib/python2.7/site-packages/jinja2/compiler.pyt inner� s c C s | j � } t | _ | S( s� Return a soft frame. A soft frame may not be modified as
standalone thing as it shares the resources with the frame it
was created of, but it's not a rootlevel frame any longer.
( RQ R; RY ( RK Rd ( ( s3 /usr/lib/python2.7/site-packages/jinja2/compiler.pyt soft� s N( ( RR RS RT R% RL RQ Rf Rj Rk Rl t __copy__( ( ( s3 /usr/lib/python2.7/site-packages/jinja2/compiler.pyRU � s + RA c B s e Z d Z RS( s? Exception used by the `UndeclaredNameVisitor` to signal a stop.( RR RS RT ( ( ( s3 /usr/lib/python2.7/site-packages/jinja2/compiler.pyRA � s t DependencyFinderVisitorc B s2 e Z d Z d � Z d � Z d � Z d � Z RS( s. A visitor that collects filter and test calls.c C s t � | _ t � | _ d S( N( R8 t filterst tests( RK ( ( s3 /usr/lib/python2.7/site-packages/jinja2/compiler.pyRL � s c C s$ | j | � | j j | j � d S( N( t
generic_visitRo RN R* ( RK R( ( ( s3 /usr/lib/python2.7/site-packages/jinja2/compiler.pyt visit_Filter� s
c C s$ | j | � | j j | j � d S( N( Rq Rp RN R* ( RK R( ( ( s3 /usr/lib/python2.7/site-packages/jinja2/compiler.pyt
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c C s d S( s Stop visiting at blocks.N( ( RK R( ( ( s3 /usr/lib/python2.7/site-packages/jinja2/compiler.pyt visit_Block� s ( RR RS RT RL Rr Rs Rt ( ( ( s3 /usr/lib/python2.7/site-packages/jinja2/compiler.pyRn � s
R@ c B s) e Z d Z d � Z d � Z d � Z RS( s� A visitor that checks if a name is accessed without being
declared. This is different from the frame visitor as it will
not stop at closure frames.
c C s t | � | _ t � | _ d S( N( R8 RC RB ( RK RC ( ( s3 /usr/lib/python2.7/site-packages/jinja2/compiler.pyRL � s c C sl | j d k rU | j | j k rU | j j | j � | j | j k rh t � � qh n | j j | j � d S( Nt load( t ctxR* RC RB RN RA RM ( RK R( ( ( s3 /usr/lib/python2.7/site-packages/jinja2/compiler.pyt
visit_Name s
!c C s d S( s Stop visiting a blocks.N( ( RK R( ( ( s3 /usr/lib/python2.7/site-packages/jinja2/compiler.pyRt s ( RR RS RT RL Rw Rt ( ( ( s3 /usr/lib/python2.7/site-packages/jinja2/compiler.pyR@ � s Re c B sz e Z d Z d � Z d � Z d � Z d � Z d � Z d � Z d � Z d � Z
d � Z d
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s A visitor for `Frame.inspect`.c C s
| | _ d S( N( RW ( RK RW ( ( s3 /usr/lib/python2.7/site-packages/jinja2/compiler.pyRL s c C s� | j d k r( | j j j | j � nf | j d k rP | j j j | j � n> | j d k r� | j j | j � r� | j j j | j � n d S( s2 All assignments to names go through this function.t storet paramRu N( Rv RW RI RN R* RJ RP RB ( RK R( ( ( s3 /usr/lib/python2.7/site-packages/jinja2/compiler.pyRw s c s� � j | j � � j � � j � j B� � � � f d � } | | j � } | | j p\ d � } � j j | j | � � j
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t � S� j � � _ x | D] } � j | � q# W� j j � } � j j � j j � � � _ | S( N( R8 RQ RW R$ RI RB R_ ( R t subnodeRd ( t old_namest real_identifiersRK ( s3 /usr/lib/python2.7/site-packages/jinja2/compiler.pyt inner_visit& s
( ( R$ t testRW RI RJ t bodyt else_RB R_ t symmetric_differenceRG ( RK R( R} R R� ( ( R{ R| RK s3 /usr/lib/python2.7/site-packages/jinja2/compiler.pyt visit_If s
c C s | j j j | j � d S( N( RW RI RN R* ( RK R( ( ( s3 /usr/lib/python2.7/site-packages/jinja2/compiler.pyt visit_Macro> s c C s' | j | � | j j j | j � d S( N( Rq RW RI RN t target( RK R( ( ( s3 /usr/lib/python2.7/site-packages/jinja2/compiler.pyt visit_ImportA s
c C sa | j | � xM | j D]B } t | t � rF | j j j | d � q | j j j | � q Wd S( Ni ( Rq RC R R6 RW RI RN ( RK R( R* ( ( s3 /usr/lib/python2.7/site-packages/jinja2/compiler.pyt visit_FromImportE s
c C s$ | j | j � | j | j � d S( s' Visit assignments in the correct order.N( R$ R( R� ( RK R( ( ( s3 /usr/lib/python2.7/site-packages/jinja2/compiler.pyt visit_AssignM s c C s | j | j � d S( sq Visiting stops at for blocks. However the block sequence
is visited as part of the outer scope.
N( R$ t iter( RK R( ( ( s3 /usr/lib/python2.7/site-packages/jinja2/compiler.pyt visit_ForR s c C s | j | j � d S( N( R$ t call( RK R( ( ( s3 /usr/lib/python2.7/site-packages/jinja2/compiler.pyt visit_CallBlockX s c C s | j | j � d S( N( R$ t filter( RK R( ( ( s3 /usr/lib/python2.7/site-packages/jinja2/compiler.pyt visit_FilterBlock[ s c C s d S( s Stop visiting at scopes.N( ( RK R( ( ( s3 /usr/lib/python2.7/site-packages/jinja2/compiler.pyt visit_Scope^ s c C s d S( s Stop visiting at blocks.N( ( RK R( ( ( s3 /usr/lib/python2.7/site-packages/jinja2/compiler.pyRt a s ( RR RS RT RL Rw R� R� R� R� R� R� R� R� R� Rt ( ( ( s3 /usr/lib/python2.7/site-packages/jinja2/compiler.pyRe s
t CompilerExitc B s e Z d Z RS( s� Raised if the compiler encountered a situation where it just
doesn't make sense to further process the code. Any block that
raises such an exception is not further processed.
( RR RS RT ( ( ( s3 /usr/lib/python2.7/site-packages/jinja2/compiler.pyR� e s R# c B sS e Z dR e d � Z d � Z d � Z d � Z d � Z d � Z d d � Z
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d � Z dR d � Z d � Z d � Z d � Z dS d � Z d � Z dR e d � Z dR d � Z d � Z d � Z dR d � Z d � Z d � Z d � Z d � Z! d � Z" d � Z# d! � Z$ d" � Z% d# � Z& d$ � Z' d% � Z( d& � Z) d' � Z* d( � Z+ d) � Z, d* � Z- d+ � Z. d, � Z/ d- � Z0 e d. � Z1 e d/ � Z2 e1 d0 � Z3 e1 d1 � Z4 e1 d2 � Z5 e1 d3 � Z6 e1 d4 � Z7 e1 d5 � Z8 e1 d6 � Z9 e1 d7 d8 e �Z: e1 d9 d8 e �Z; e2 d0 � Z< e2 d1 � Z= e2 d: d8 e �Z> [1 [2 d; � Z? d< � Z@ d= � ZA d> � ZB d? � ZC d@ � ZD dA � ZE dB � ZF dC � ZG e dD � ZH dE � ZI dF � ZJ dG � ZK dH � ZL dI � ZM dJ � ZN dK � ZO dL � ZP dM � ZQ dN � ZR dO � ZS dP � ZT dQ � ZU RS(T c C s� | d k r t � } n | | _ | | _ | | _ | | _ t | _ | | _ i | _ i | _
d | _ t | _ d | _
i | _ i | _ g | _ d | _ d | _ d | _ t | _ d | _ d | _ d S( Ni i ( R% R R) R* R+ R& R; t created_block_contextR, t import_aliasest blockst extends_so_fart has_known_extendst code_linenoRp Ro t
debug_infot _write_debug_infot
_new_linest
_last_lineR1 t _first_writet _last_identifiert _indentation( RK R) R* R+ R& R, ( ( s3 /usr/lib/python2.7/site-packages/jinja2/compiler.pyRL n s, c C s t | | | j | j � � d S( s* Fail with a :exc:`TemplateAssertionError`.N( R R* R+ ( RK t msgt lineno( ( s3 /usr/lib/python2.7/site-packages/jinja2/compiler.pyt fail� s c C s | j d 7_ d | j S( s Get a new unique identifier.i s t_%d( R� ( RK ( ( s3 /usr/lib/python2.7/site-packages/jinja2/compiler.pyt temporary_identifier� s c C s' | j � | _ | j d | j � d S( s7 Enable buffering for the frame from that point onwards.s %s = []N( R� R[ t writeline( RK t frame( ( s3 /usr/lib/python2.7/site-packages/jinja2/compiler.pyR[ � s c C s� | j j ry | j d � | j � | j d | j � | j � | j d � | j � | j d | j � | j � n7 | j j r� | j d | j � n | j d | j � d S( s( Return the buffer contents of the frame.s if context.eval_ctx.autoescape:s return Markup(concat(%s))s else:s return concat(%s)N( RV t volatileR� t indentR[ t outdentt
autoescape( RK R� ( ( s3 /usr/lib/python2.7/site-packages/jinja2/compiler.pyt return_buffer_contents� s
c C s | j d 7_ d S( s Indent by one.i N( R� ( RK ( ( s3 /usr/lib/python2.7/site-packages/jinja2/compiler.pyR� � s i c C s | j | 8_ d S( s Outdent by step.N( R� ( RK t step( ( s3 /usr/lib/python2.7/site-packages/jinja2/compiler.pyR� � s c C s= | j d k r" | j d | � n | j d | j | � d S( s% Yield or write into the frame buffer.s yield s
%s.append(N( R[ R% R� ( RK R� R( ( ( s3 /usr/lib/python2.7/site-packages/jinja2/compiler.pyt start_write� s c C s# | j d k r | j d � n d S( s1 End the writing process started by `start_write`.t )N( R[ R% t write( RK R� ( ( s3 /usr/lib/python2.7/site-packages/jinja2/compiler.pyt end_write� s c C s. | j | | � | j | � | j | � d S( s4 Simple shortcut for start_write + write + end_write.N( R� R� R� ( RK t sR� R( ( ( s3 /usr/lib/python2.7/site-packages/jinja2/compiler.pyt simple_write� s
c C si | j d k r | j d � n
| j d � y% x | D] } | j | | � q6 WWn t k
rd n Xd S( s� Visit a list of nodes as block in a frame. If the current frame
is no buffer a dummy ``if 0: yield None`` is written automatically
unless the force_generator parameter is set to False.
s if 0: yield Nonet passN( R[ R% R� R$ R� ( RK R R� R( ( ( s3 /usr/lib/python2.7/site-packages/jinja2/compiler.pyt
blockvisit� s
c C s� | j r� | j su | j j d | j � | j | j 7_ | j d k ru | j j | j | j f � d | _ qu n t | _ | j j d | j
� d | _ n | j j | � d S( s& Write a string into the output stream.s
s i N( R� R� R& R� R� R� R% R� t appendR; R� ( RK R ( ( s3 /usr/lib/python2.7/site-packages/jinja2/compiler.pyR� � s
i c C s! | j | | � | j | � d S( s! Combination of newline and write.N( t newlineR� ( RK R R( Ri ( ( s3 /usr/lib/python2.7/site-packages/jinja2/compiler.pyR� � s c C sV t | j d | � | _ | d k rR | j | j k rR | j | _ | j | _ n d S( s/ Add one or more newlines before the next write.i N( t maxR� R% R� R� R� ( RK R( Ri ( ( s3 /usr/lib/python2.7/site-packages/jinja2/compiler.pyR� s c C se t } x@ t d � | j D� | p% d � D] } t | � r) t } Pq) q) Wx. | j D]# } | j d � | j | | � qS W| s� x. | j D]# } | j d � | j | | � q� W| d
k r� x4 t | � D]# \ } } | j d | | f � q� Wq� n | j
r#| j d � | j | j
| � n | r/| j d
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| j d � xE | j D]: } | j d | j � | j | j
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S( s, Writes a function call to the stream for the current node.
A leading comma is added automatically. The extra keyword
arguments may not include python keywords otherwise a syntax
error could occour. The extra keyword arguments should be given
as python dict.
c s s | ] } | j Vq d S( N( R? ( Rg R ( ( s3 /usr/lib/python2.7/site-packages/jinja2/compiler.pys <genexpr> s s , s , %s=%ss , *s
, **dict({s , **{s %r: s %r: %s, s }, **R� t }s , **N( ( R; R t kwargst is_python_keywordR1 t argsR� R$ R% R t dyn_argst
dyn_kwargsR? R= ( RK R( R� t extra_kwargst kwarg_workaroundt kwargt argR? R= ( ( s3 /usr/lib/python2.7/site-packages/jinja2/compiler.pyt signature sJ )
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c C s2 x+ | j j D] } | j d | | f � q
Wd S( s9 Pull all the references identifiers into the local scope.s l_%s = context.resolve(%r)N( RW RB R� ( RK R� R* ( ( s3 /usr/lib/python2.7/site-packages/jinja2/compiler.pyt pull_locals< s c C s� t � } x | D] } | j | � q Wxt d D]l } t | | � } xT t | | � D]C } | | k rx | j � | | <n | j d | | | | f � qS Wq. Wd S( s Pull all the dependencies.Ro Rp s %s = environment.%s[%r]N( s filterss tests( Rn R$ t getattrR� R� ( RK R RD R( t
dependencyt mappingR* ( ( s3 /usr/lib/python2.7/site-packages/jinja2/compiler.pyt pull_dependenciesA s
c C sO | j j rK | j d t r! d p$ d d j d � | j j D� � f � n d S( s+ Disable Python optimizations for the frame.s %sdummy(%s)s if 0: t s , c s s | ] } d | Vq d S( t l_N( ( Rg R* ( ( s3 /usr/lib/python2.7/site-packages/jinja2/compiler.pys <genexpr>W s N( RW RG R� R t join( RK R� ( ( s3 /usr/lib/python2.7/site-packages/jinja2/compiler.pyt unoptimize_scopeN s c C s� i } xB | j | � D]1 } | j � | | <} | j d | | f � q Wt � } x4 | j j D]& } | | k ra | j d | � qa qa W| r� | j d j | � d � n | S( s� This function returns all the shadowed variables in a dict
in the form name: alias and will write the required assignments
into the current scope. No indentation takes place.
This also predefines locally declared variables from the loop
body because under some circumstances it may be the case that
`extra_vars` is passed to `Frame.find_shadowed`.
s %s = l_%sR� s = s
= missing( Rj R� R� R8 RW RI RN R� ( RK R� t
extra_varst aliasesR* t identt
to_declare( ( s3 /usr/lib/python2.7/site-packages/jinja2/compiler.pyt
push_scopeZ s
c C s� x1 t | � D]# \ } } | j d | | f � q
Wt � } x4 | j j D]& } | | k rJ | j d | � qJ qJ W| r� | j d j | � d � n d S( s0 Restore all aliases and delete unused variables.s l_%s = %sR� s = s
= missingN( R R� R8 RW RI RN R� ( RK R� R� R* t aliast to_delete( ( s3 /usr/lib/python2.7/site-packages/jinja2/compiler.pyt pop_scopep s c
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k r | j � } n t | � } | j � } | j | � | j j | j j @| j j | j j B@} | r� | j
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� n | j j | j j | j j @8_ | s� | St | _ t | _ t | _ g | j D] } d | j ^ q� | _ } t | d � } d | k rNt | _ | j j d � | j d � n d | k r�t | _ | j j d � | j d � n d | k r�t | _ | j j d � | j d � n | S( sM In Jinja a few statements require the help of anonymous
functions. Those are currently macros and call blocks and in
the future also recursive loops. As there is currently
technical limitation that doesn't allow reading and writing a
variable in a scope where the initial value is coming from an
outer scope, this function tries to fall back with a common
error message. Additionally the frame passed is modified so
that the argumetns are collected and callers are looked up.
This will return the modified frame.
sX It's not possible to set and access variables derived from an outer scope! (affects: %s)s , R� t callerR� t varargst l_callert l_kwargst l_varargsN( R� s kwargsR� ( R% t iter_child_nodesR7 Rk Rf RW RB RG RI RJ R� R� t sortedR� R; t accesses_kwargst accesses_varargst accesses_callerR� R* t argumentsRE R1 RO R� (
RK R( R� t childrent find_specialt
func_framet overridden_closure_varsR R� RB ( ( s3 /usr/lib/python2.7/site-packages/jinja2/compiler.pyt function_scoping~ sD
* c C s� | j | | | � } t | _ | j } d | j j k rI | d g } n | j d d j | � | � | j � | j | � | j
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