i%x zdZddlmZmZddlmZmZmZmZm Z m Z m Z dZ e dZ Gddee Ze de Zd ed efd Zd ed efd ZGddZGddee efZGddee efZGddeZGddee efZe dZGddeee efZGddee efee ee effee efZGddeee ZGdd eee ee Zd!S)"z A BTree in the style of Cormen, Leiserson, and Rivest's "Algorithms" book, with copy-on-write node updates, cursors, and optional space optimization for mostly-in-order insertion. )MutableMapping MutableSet)AnyCallableGenericOptionalTupleTypeVarcastKTceZdZdZdefdZdS)Elementz+All items stored in the BTree are Elements.returnct)zFThe key for this element; the returned type must implement comparison.)NotImplementedErrorselfs Y/var/www/html/Pagina-Ingenieria-Requisitos/venv/lib/python3.11/site-packages/dns/btree.pykeyz Element.keys!!N)__name__ __module__ __qualname____doc__r rrrrrs555"R""""""rrET)boundtrc |dz S)z[The minimum number of keys in a non-root node for a BTree with the specified ``t`` rrs r_MINr#s  q5Lrcd|zdz S)zGThe maximum number of keys in node for a BTree with the specified ``t``r!rr"s r_MAXr&#s q519rceZdZdZdZdS)_CreatorzA _Creator class instance is used as a unique id for the BTree which created a node. 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If we don't do this, then an in-order insertion will produce a BTree where most of the nodes are minimal. rNr!)r4r9r3r&rrLtry_right_steal)rrFlefts roptimize_in_order_insertionz!_Node.optimize_in_order_insertions A:: F}UQY' ty>>T$&\\ ) ) F##EAI..$)nntDF||++''eai88 $)nntDF||++++++relementin_orderc|rJ |}||\}}|r|j|}||j|<|S|jr|j||dS||}|r|j|| ||}|r| ||SrH) r:rrEr3r2insertrLadoptsplitinsert_nonfullrU) rrVrWrr@rBoldrJoelts rr\z_Node.insert_nonfulls??$$$$$ ++--C**3//HAu il& !      G,,,t,,Q//##%%DJ ..++GX>>844Q777 rcz|sJ||j|j|j}t |jt|jdzd|_|jt|j}t |jdt|j|_|jslt |jt|jdzd|_t |jdt|jdz|_|||fS)zASplit a maximal node into two minimal ones and a central element.r!N) r: __class__rr1r2listr3r#r4)rrightmiddles rr[z _Node.splits     tvt|T\BB$)DLL1$4$6$6788 4<<(>T$&\\>233 | D!$-TV q0@0B0B"CDDEN /Adf1A/A!BCCDMVU""rparentc|dkr|j|dz }|s||dz }|j|dz }|j|j|dz <|jd||js=|jrJ|j}|jd|dSdS)zTry to steal from this Node's left sibling for balancing purposes. Returns ``True`` if the theft was successful, or ``False`` if not. rr!TF)r4r=rLr3poprYr2)rrdrFrTeltrJs rtry_left_stealz_Node.try_left_steals A::?519-D??$$ --eai88k%!),)- EAI&   C(((|3#|+++ M--//EM((E222turc|dzt|jkr|j|dz}|s||dz}|j|}|jd|j|<|j||js=|jrJ|jd}|j|dSdS)zTry to steal from this Node's right sibling for balancing purposes. Returns ``True`` if the theft was successful, or ``False`` if not. r!rTF)r9r4r=rLr3rfappendr2)rrdrFrbrgrJs rrSz_Node.try_right_steals 19s6?++ + +OEAI.E##%% ..uqy99k%(%*Z^^A%6%6 E"   %%%}0#|+++!N..q11EM((///turrTrcrbc|rJ|jrJ|}||\}}|rJ|j||t |jdkr ||g|_dS|j||ksJ|j|dz|dS)zAdopt left, middle, and right into our Node (which must not be maximal, and which must not be a leaf). In the case were we are not the new root, then the left child must already be in the Node.rr!N)r:r2rrEr3rYr9r4)rrTrcrbrr@rBs rrZz _Node.adopts??$$$$$<jjll&&s++5 F### t}   " "!5MDMMM=#t++++ M Q . . . . .rc2|j|dz}|j|j||j|j|js!|j|jdSdS)z>Merge this node's parent and its right sibling into this node.r!N)r4rfr3rjextendr2)rrdrFrbs rmergez _Node.merges##EAI.. //000 $$$| 1 M  0 0 0 0 0 1 1rch|jr |jdS|jdS)z"The least element in this subtree.r)r2r3r4minimumrs rrpz _Node.minimums1 < .9Q< =#++-- -rch|jr |jdS|jdS)z%The greatest element in this subtree.)r2r3r4maximumrs rrsz _Node.maximum s1 < /9R= =$,,.. .rc|jrJ|||rdS|||rdS|dkr|||dS||dz }|||dz dS)zThis Node is minimal, and we want to make it non-minimal so we can delete. We try to steal from our siblings, and if that doesn't work we will merge with one of them.Nrr!)r2rhrSrnrL)rrdrFrTs rbalancez _Node.balances>!!!   vu - -  F    . .  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"sDy)9:S_(R(E(?*CS*H$I(((( -r-b4i----$bDR$Y2 #u_b/AB # # # #_ST&ocd&///2/o/RV////"1O1C1D1111...../////*o*c*d****&--'8-ACd- d----^4HbT4Z$84T44445X6G6M-N5SW5555h.GX/DDDDDrr/ceZdZdZddZddZddZd Zd Zde dzfd Z de dzfd Z d e de ddfdZdded e ddfdZddZddZdZdZdS)CursorzA seekable cursor for a BTree. 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FNzoriginal BTree is not immutabler6zt must be >= 3Tr) r(r1 _immutablesetcursorsrxrrsizer/)rrrs rr7zBTree.__init__hs zz    $'EE  & D !BCCCZDF DI DIII1uu !1222DFdfdlD99DIDIIIrc&|js d|_dSdS)zMake the BTree immutable. Attempts to alter the BTree after making it immutable will raise an Immutable exception. This operation cannot be undone. TN)rrs rmake_immutablezBTree.make_immutables#  #"DOOO # #rrc^|jrt|jD]}|dSrH)rrrrrcursors r_check_mutable_and_parkzBTree._check_mutable_and_parks; ? Ol  F KKMMMM  rFrgrWc||j|j}|r||_|jrH|j}t |j|jd|_|jj||j ||}||xj dz c_ |S)aEInsert the element into the BTree. If *in_order* is ``True``, then extra work will be done to make left siblings full, which optimizes storage space when the the elements are inserted in-order or close to it. Returns the previously existing element at the element's key or ``None``. FNr!) rrrIr1r:r/rrZr[r\r)rrgrWrKold_rootr^s rinsert_elementzBTree.insert_elements $$&&&$$T\22  DI 9   ! ! /yHdfdlE::DI DIOX^^-- . .y''X66 < IINII rrc6|j|S)zhGet the element matching *key* from the BTree, or return ``None`` if it does not exist. )rrQrrs r get_elementzBTree.get_elementsy}}S!!!rrvc||j|j}|r||_|j|d|}|o|xjdzc_t |jjdkrB|jjs6t |jj dksJ|jj d|_|S)Nr!r) rrrIr1ryrr9r3r2r4)rrrvrKrgs r_deletez BTree._deletes $$&&&$$T\22  DIisD%00 ? IINII49>""a''y(6ty122a7777 $ 21 5DI rc.||dS)zDelete the element matching *key* from the BTree. Returns the matching element or ``None`` if it does not exist. N)rrs r delete_keyzBTree.delete_keys ||C&&&rrVcb|||}||usJ|S)zwDelete *element* from the BTree. 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Unlike a normal Python dict, the BTreeDict may be mutated while iterating. NFrrrWrrrWc\t||||_dSNrsuperr7rWrrrrWr`s rr7zBTreeDict.__init__- 1x000  rrrc||}|ttt|SrH)rKeyErrorr rr)rrrgs r __getitem__zBTreeDict.__getitem__ s9s## ;NC==&&(( (rrc\t||}|||jdSrH)rrrW)rrrrgs r __setitem__zBTreeDict.__setitem__'s-enn C/////rc>||tdSrH)rr rs r __delitem__zBTreeDict.__delitem__+s! ??3   'N ( 'r)rrrrrrrrr7r rr rr __classcell__rs@rrrs!% !!! !$, !  !!!!!!)r)b))))0r0"00000rdrrc*eZdZdZdefdZdefdZdS)Memberz.The BTree element type used in a ``BTreeSet``.rc||_dSrHrrs rr7zMember.__init__3s  rrc|jSrHrrs rrz Member.key6rrN)rrrrr r7rrrrrr0sP88BRrrcpeZdZdZeddddededzdeffdZd e d efd Z d e d dfd Z d e d dfdZ xZS)BTreeSetzyA MutableSet implemented with a BTree. Unlike a normal Python set, the BTreeSet may be mutated while iterating. NFrrrrWc\t||||_dSrrr s rr7zBTreeSet.__init__@r rrrc0||duSrH)rrs r __contains__zBTreeSet.__contains__Js$$D00rrcZt|}|||jdSrH)rrrW)rrrgs rrz BTreeSet.addMs+Umm C/////rc0||dSrH)r)rrs rrzBTreeSet.discardQs r)rrrrrrrrr7rrr rrrrs@rrr:s!% !!! !$, !  !!!!!!111111000000RDrrN)rcollections.abcrrtypingrrrrr r r rr rrrr#r&r(r/r Exceptionrrrrrrrrrrr!s 76666666IIIIIIIIIIIIIIIIII   WT]]"""""gbk""" WT!!!CCCC        FDFDFDFDFDGBFOFDFDFDR aaaaaWRV_aaaH""""" """Q Q Q Q Q GBFOQ Q Q h WT]]11111'"b&/111(Br2b"f:~!6r2v8N@Wgbkugbk:b>r