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e!e" Z% G d de% Z& G d de% Z' G d d e% Z( G d d e& Z) G d d!e& Z* G d" d#e& Z+ G d$ d%e& Z, G d& d'e& Z- G d( d)e& Z. G d* d+e& Z/ G d, d-e& Z0 G d. d/e& Z1 G d0 d1e& Z2 G d2 d3e& Z3 G d4 d5e& Z4 G d6 d7e& Z5 G d8 d9e& Z6 G d: d;e& Z7 G d< d=e% Z8 G d> d?e8 Z9 G d@ dAe8 Z: G dB dCe8 Z; G dD dEe8 Z< G dF dGe8 Z= G dH dIe= Z> G dJ dKe= Z? G dL dMe= Z@ G dN dOe= ZA G dP dQe= ZB G dR dSe' ZC G dT dUe' ZD G dV dWe8 ZEdX ZF G dY dZe8 ZG G d[ d\e8 ZH G d] d^e8 ZI G d_ d`e8 ZJ G da dbe8 ZK G dc dde8 ZL G de dfe8 ZM G dg dhe8 ZN G di dje' ZO eOxj dldmP eQdn eRe eRe z eRe z D z z
c_ G do dpe9 ZS G dq dre9 ZT G ds dte9 ZU G du dve9 ZV G dw dxe9 ZW G dy dze9 ZX G d{ d|e9 ZY G d} d~e9 ZZ G d de9 Z[ G d de: Z\ G d de: Z] G d de: Z^ G d de8 Z_ G d de8 Z` G d de8 Za G d de8 Zb G d de8 Zc G d de8 Zd G d de8 Ze G d de8 Zf G d de& Zg G d de& Zh G d de& Zi G d de& Zj G d de& Zk G d dek Zld Zm enem e!_o [mdS )zAST nodes generated by the parser for the compiler. Also provides
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N)deque)Markup )izip)PY2) text_type)with_metaclass)*///**%+-)notr r c
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__module__ __qualname____doc__r r r r% r% ( s BBBBr r% c e Zd ZdZd ZdS )NodeTypezA metaclass for nodes that handles the field and attribute
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Nc || _ t |j r| | | _ n |j | _ d| _ d S NF) environmentcallable
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template_names r __init__zEvalContext.__init__B sI & K* + + 5 ) 4 4] C CDOO ) 4DO
r c 4 | j S r )__dict__copyrH s r savezEvalContext.saveJ s }!!###r c l | j | j | d S r )rL clearupdate)rH olds r revertzEvalContext.revertM s2
S!!!!!r r )r' r( r) r* rJ rO rT r r r rA rA = sP $ $ $" " " " "r rA c ^ |*| j t d t | j S |S )NzIif no eval context is passed, the node must have an attached environment.)rD RuntimeErrorrA )nodectxs r get_eval_contextrY R s?
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d Zd Zd Zej Zd Zd ZdS )Nodea Baseclass for all Jinja nodes. There are a number of nodes available
of different types. There are four major types:
- :class:`Stmt`: statements
- :class:`Expr`: expressions
- :class:`Helper`: helper nodes
- :class:`Template`: the outermost wrapper node
All nodes have fields and attributes. Fields may be other nodes, lists,
or arbitrary values. Fields are passed to the constructor as regular
positional arguments, attributes as keyword arguments. Each node has
two attributes: `lineno` (the line number of the node) and `environment`.
The `environment` attribute is set at the end of the parsing process for
all nodes automatically.
r linenorD Tc n | j rt d |rt | t | j k rn| j s t d| j j z t d| j j t | j t | j dk rdpdfz t
| j | D ]\ }}t | || | j D ]'}t | || |d (|r,t dt t | z d S )Nz#abstract nodes are not instantiablez%r takes 0 argumentsz%r takes 0 or %d argument%sr s zunknown attribute %r) r0 TypeErrorr4 r. __class__r' r setattrr/ popnextiter)rH r. r/ r; argr> s r rJ z
Node.__init__s sV = C ABB B
)6{{c$+ . ...{ V#$:T^=T$TUUU 1 /DK((DK((A-5#; "$+v 6 6
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) cdC((((O < dS )aZ This method iterates over all fields that are defined and yields
``(key, value)`` tuples. Per default all fields are returned, but
it's possible to limit that to some fields by providing the `only`
parameter or to exclude some using the `exclude` parameter. Both
should be sets or tuples of field names.
N)r. r2 AttributeError)rH excludeonlyr; s r iter_fieldszNode.iter_fields s K DD((((((('D,?,?$ d 3 333333% D s 7
AAc # K | || D ]R\ }}t |t r |D ]}t |t r|V 9t |t r|V SdS )zIterates over all direct child nodes of the node. This iterates
over all fields and yields the values of they are nodes. If the value
of a field is a list all the nodes in that list are returned.
N)rl
isinstancelistr[ )rH rj rk _itemns r iter_child_nodeszNode.iter_child_nodes s
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A!!T** D$''
r c < | | D ]}|c S dS )ziFind the first node of a given type. If no such node exists the
return value is `None`.
N)find_all)rH node_typeresults r findz Node.find s2 mmI.. FMMM r c # K | D ]2}t || r|V | | D ]}|V 3dS )zFind all the nodes of a given type. If the type is a tuple,
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N)rs rn ru )rH rv childrw s r ru z
Node.find_all ss **,, E%++
..33
r c t | g }|rM| }d|j v r||_ | | |M| S )a Reset the context of a node and all child nodes. Per default the
parser will all generate nodes that have a 'load' context as it's the
most common one. This method is used in the parser to set assignment
targets and other nodes to a store context.
rX )r popleftr. rX r1 rs )rH rX todorW s r set_ctxz Node.set_ctx si dV}} 1<<>>D ## KK--// 0 0 0 1
r Fc t | g }|rV| }d|j v r|j |r||_ | | |V| S )z.Set the line numbers of the node and children.r] )r r| r/ r] r1 rs )rH r] overrider} rW s r
set_linenozNode.set_lineno st dV}} 1<<>>D4?**;&(&"(DK KK--// 0 0 0 1 r c t | g }|rD| }||_ | | |D| S )z"Set the environment for all nodes.)r r| rD r1 rs )rH rD r} rW s r set_environmentzNode.set_environment s[ dV}} 1<<>>D *D KK--// 0 0 0 1 r c t | t | u oCt | t | k S r )r8 r6 rl rH others r __eq__z Node.__eq__ sX DzzT%[[(
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Node.__repr__ sG N # # # IIWWWW4;WWW W W W W
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rn r[ appendreprrb r' r. enumerater2 ro )rW idxfieldvaluerq _dumpbufs r r zNode.dump.._dump sJ dD))
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U %JJt$$$ e,, eT** !JJsOOO%.u%5%5 $ $ T - JJt , , , d JJsOOOOE%LLLL JJsOOOOOr r` )r )rH r r s @@r dumpz Node.dump sF 0
d wws||r NN)F)r' r( r) r* r. r/ r0 rJ rl rs rx ru r~ r r r r object__hash__r r r r r r[ r[ ^ s F*JHM M M, $
& & & H
r r[ c e Zd ZdZdZdS )Stmtz Base node for all statements.TNr' r( r) r* r0 r r r r r
s ''HHHr r c e Zd ZdZdZdS )Helperz,Nodes that exist in a specific context only.TNr r r r r r s 66HHHr r c e Zd ZdZdZdS )TemplatezjNode that represents a template. This must be the outermost node that
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bodyNr' r( r) r* r. r r r r r FFFr r c e Zd ZdZdZdS )OutputzA node that holds multiple expressions which are then printed out.
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nodesNr r r r r r s FFFr r c e Zd ZdZdZdS )Extendsz Represents an extends statement.)templateNr r r r r r & s **
FFFr r c e Zd ZdZdZdS )Forax The for loop. `target` is the target for the iteration (usually a
:class:`Name` or :class:`Tuple`), `iter` the iterable. `body` is a list
of nodes that are used as loop-body, and `else_` a list of nodes for the
`else` block. If no else node exists it has to be an empty list.
For filtered nodes an expression can be stored as `test`, otherwise `None`.
)targetrf r else_test recursiveNr r r r r r , s FFFFr r c e Zd ZdZdZdS )Ifz4If `test` is true, `body` is rendered, else `else_`.)r r elif_r Nr r r r r r 8 s >>
/FFFr r c e Zd ZdZdZdS )MacrozA macro definition. `name` is the name of the macro, `args` a list of
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)r; argsdefaultsr Nr r r r r r > s
2FFFr r c e Zd ZdZdZdS ) CallBlockzLike a macro without a name but a call instead. `call` is called with
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)callr r r Nr r r r r r G s 2FFFr r c e Zd ZdZdZdS ) FilterBlockzNode for filter sections.)r filterNr r r r r r O s ##
FFFr r c e Zd ZdZdZdS )WithzSpecific node for with statements. In older versions of Jinja the
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.. versionadded:: 2.9.3
)targetsvaluesr Nr r r r r r U s +FFFr r c e Zd ZdZdZdS )Blockz A node that represents a block.)r; r scopedNr r r r r r _ s ))
'FFFr r c e Zd ZdZdZdS )Includez'A node that represents the include tag.)r with_contextignore_missingNr r r r r r e s 11
;FFFr r c e Zd ZdZdZdS )Importz&A node that represents the import tag.)r r r Nr r r r r r k s 00
3FFFr r c e Zd ZdZdZdS )
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pass unsafe names to the name attribute. The compiler translates the
attribute lookups directly into getattr calls and does *not* use the
subscript callback of the interface. As exported variables may not
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problem for regular Jinja code, but if this node is used in an extension
extra care must be taken.
The list of names may contain tuples if aliases are wanted.
)r namesr Nr r r r r r q s 3FFFr r c e Zd ZdZdZdS )ExprStmtzAA statement that evaluates an expression and discards the result.rW Nr r r r r r s KK
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FFFr r c e Zd ZdZdZdS ) AssignBlockz Assigns a block to a target.)r r r Nr r r r r r s &&
)FFFr r c $ e Zd ZdZdZddZd ZdS )Exprz Baseclass for all expressions.TNc t )an Return the value of the expression as constant or raise
:exc:`Impossible` if this was not possible.
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a default context is created which requires the nodes to have
an attached environment.
.. versionchanged:: 2.4
the `eval_ctx` parameter was added.
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FHH r r c & e Zd ZdZdZdZdZddZdS ) UnaryExprz$Baseclass for all unary expressions.r NTc t | | }| j j r!| j | j j v rt t | j } || j | S # t $ r t w xY wr )
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FHH r r c e Zd ZdZdZd ZdS )Namea Looks up a name or stores a value in a name.
The `ctx` of the node can be one of the following values:
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)r; rX c | j dvS )N)truefalsenoneTrueFalseNoner; rN s r r zName.can_assign s y RRRr Nr' r( r) r* r. r r r r r r s9 FS S S S Sr r c e Zd ZdZdZd ZdS )NSRefz)Reference to a namespace value assignment)r; r> c dS )NTr rN s r r zNSRef.can_assign s
tr Nr r r r r r s. 33
F r r c e Zd ZdZdZdS )LiteralzBaseclass for literals.TNr r r r r r s !!HHHr r c 6 e Zd ZdZdZddZedd ZdS )Consta All constant values. The parser will return this node for simple
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complex values such as lists too. Only constants with a safe
representation (objects where ``eval(repr(x)) == x`` is true).
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Z RI%% )*>? &
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AAc \ ddl m} || st | ||| S )zReturn a const object if the value is representable as
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sI ,+++++ }U## ,, s5[AAAAr r r )r' r( r) r* r. r classmethodr r r r r r s_ F B B B [ B B Br r c e Zd ZdZdZddZdS ) TemplateDatazA constant template string.)dataNc t | | }|j rt |j rt | j S | j S r )rY rG r% rF r r r s r r zTemplateData.as_const sI #D(33 ,, %$)$$ $yr r r' r( r) r* r. r r r r r r s3 %%
F r r c $ e Zd ZdZdZddZd ZdS )TuplezFor loop unpacking and some other things like multiple arguments
for subscripts. Like for :class:`Name` `ctx` specifies if the tuple
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)itemsrX Nc d t | t fd| j D S )Nc 3 B K | ]}| V d S r r r xr s r r z!Tuple.as_const..2 s/ >>aQZZ))>>>>>>r )rY r6 r r s `r r zTuple.as_const0 s7 #D(33>>>>4:>>>>>>r c H | j D ]}| s dS dS )NFT)r r )rH rq s r r zTuple.can_assign4 s6 J D??$$
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F? ? ? ? r r c e Zd ZdZdZddZdS )Listz&Any list literal such as ``[1, 2, 3]``r Nc J t | fd| j D S )Nc : g | ]}| S r r" r# s r
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8$$999r )rY r r s `r r z
List.as_const@ s. #D(339999dj9999r r r r r r r( r( ; s3 00
F: : : : : :r r( c e Zd ZdZdZddZdS )DictzeAny dict literal such as ``{1: 2, 3: 4}``. The items must be a list of
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FJ J J J J Jr r3 c e Zd ZdZdZddZdS )Keywordz>A key, value pair for keyword arguments where key is a string.r4 Nc d t | | }| j | j | fS r )rY r5 r r r s r r zKeyword.as_const` s. #D(33x,,X6666r r r r r r r8 r8 [ s3 HH
F7 7 7 7 7 7r r8 c e Zd ZdZdZddZdS )CondExprzZA conditional expression (inline if expression). (``{{
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)startstopstepNc t | fd}t || j || j || j S )Nc 6 | d S | S r r" )objr s r constz Slice.as_const..const s {t<<)) )r )rY slicerf rg rh )rH r rl s ` r r zSlice.as_const sc #D(33 * * * * *
UU4:&&di(8(8%% :J:JKKKr r r r r r re re s? 'FL L L L L Lr re c e Zd ZdZdZddZdS )ConcatzXConcatenates the list of expressions provided after converting them to
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KKKKKKr r r r r r ro ro s? FL L L L L Lr ro c e Zd ZdZdZddZdS )CompareziCompares an expression with some other expressions. `ops` must be a
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)expropsNc & t | | }| j | x}} | j D ]>}|j | }t |j || }|s dS |}?n # t $ r t w xY w|S rC )rY rt r ru _cmpop_to_funcopr r% )rH r rw r rx new_values r r zCompare.as_const) s #D(33 ++H555
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s AA5 1A5 5Br r r r r rs rs " s9 F r rs c e Zd ZdZdZdS )Operandz$Holds an operator and an expression.)rx rt Nr r r r r{ r{ < s ..
FFFr r{ Tz(
The following operators are available: r c # K | ] }d |z V
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r c e Zd ZdZdZdS )Mulz(Multiplies the left with the right node.r
Nr' r( r) r* r r r r r~ r~ K s 22HHHr r~ c e Zd ZdZdZdS )Divz#Divides the left by the right node.r Nr r r r r r Q s --HHHr r c e Zd ZdZdZdS )FloorDivzjDivides the left by the right node and truncates conver the
result into an integer by truncating.
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Nr r r r r r q s %%HHHr r c e Zd ZdZdZddZdS )AndzShort circuited AND.andNc t | | }| j | o| j | S r rY r r r r s r r z And.as_const| s< #D(33y!!(++M
0C0CH0M0MMr r r' r( r) r* r r r r r r r w s9 HN N N N N Nr r c e Zd ZdZdZddZdS )OrzShort circuited OR.orNc t | | }| j | p| j | S r r r s r r z Or.as_const s< #D(33y!!(++Ltz/B/B8/L/LLr r r r r r r r s9 HM M M M M Mr r c e Zd ZdZdZdS )NotzNegate the expression.r Nr r r r r r s HHHr r c e Zd ZdZdZdS )Negz Make the expression negative.r Nr r r r r r s ''HHHr r c e Zd ZdZdZdS )Posz8Make the expression positive (noop for most expressions)r Nr r r r r r s BBHHHr r c e Zd ZdZdZdS )EnvironmentAttributezLoads an attribute from the environment object. This is useful for
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The identifier is the identifier of the :class:`Extension`.
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)
identifierr; Nr r r r r r s $FFFr r c e Zd ZdZdZdS ) ImportedNamea& If created with an import name the import name is returned on node
access. For example ``ImportedName('cgi.escape')`` returns the `escape`
function from the cgi module on evaluation. Imports are optimized by the
compiler so there is no need to assign them to local variables.
)
importnameNr r r r r r s FFFr r c e Zd ZdZdZd ZdS ) InternalNamea7 An internal name in the compiler. You cannot create these nodes
yourself but the parser provides a
:meth:`~jinja2.parser.Parser.free_identifier` method that creates
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r r c e Zd ZdZdZddZdS )MarkSafez:Mark the wrapped expression as safe (wrap it as `Markup`).rt Nc p t | | }t | j | S r )rY r rt r r s r r zMarkSafe.as_const s/ #D(33di((22333r r r r r r r r s3 DD
F4 4 4 4 4 4r r c e Zd ZdZdZddZdS )MarkSafeIfAutoescapezMark the wrapped expression as safe (wrap it as `Markup`) but
only if autoescaping is active.
.. versionadded:: 2.5
r Nc t | | }|j rt | j | }|j rt
| S |S r )rY rG r% rt r rF r )rH r rt s r r z MarkSafeIfAutoescape.as_const sW #D(33 ,, y!!(++ $<< r r r r r r r r s9 F r r c e Zd ZdZdS )ContextReferenceaP Returns the current template context. It can be used like a
:class:`Name` node, with a ``'load'`` ctx and will return the
current :class:`~jinja2.runtime.Context` object.
Here an example that assigns the current template name to a
variable named `foo`::
Assign(Name('foo', ctx='store'),
Getattr(ContextReference(), 'name'))
This is basically equivalent to using the
:func:`~jinja2.contextfunction` decorator when using the
high-level API, which causes a reference to the context to be passed
as the first argument to a function.
Nr& r r r r r s r r c e Zd ZdZdS )DerivedContextReferencezReturn the current template context including locals. Behaves
exactly like :class:`ContextReference`, but includes local
variables, such as from a ``for`` loop.
.. versionadded:: 2.11
Nr& r r r r r s r r c e Zd ZdZdS )ContinuezContinue a loop.Nr& r r r r r s r r c e Zd ZdZdS )Breakz
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s r r c e Zd ZdZdZdS )ScopezAn artificial scope.r Nr r r r r r s
FFFr r c e Zd ZdZdZdS ) OverlayScopea An overlay scope for extensions. This is a largely unoptimized scope
that however can be used to introduce completely arbitrary variables into
a sub scope from a dictionary or dictionary like object. The `context`
field has to evaluate to a dictionary object.
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OverlayScope(context=self.call_method('get_context'),
body=[...])
.. versionadded:: 2.10
)contextr Nr r r r r r s !FFFr r c e Zd ZdZdZdS )EvalContextModifiera
Modifies the eval context. For each option that should be modified,
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EvalContextModifier(options=[Keyword('autoescape', Const(True))])
)optionsNr r r r r r % s FFFr r c e Zd ZdZdZdS )ScopedEvalContextModifierzModifies the eval context and reverts it later. Works exactly like
:class:`EvalContextModifier` but will only modify the
:class:`~jinja2.nodes.EvalContext` for nodes in the :attr:`body`.
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