/hzNSrSSKrSSKrSSKJrJrJrJrJ r J r J r J r J r Jr SSKJrJr SSKJr SSKJrJr SSKJrJrJr SSKJrJrJrJrJ r J!r! SS K"J#r#J$r$ SS K%J&r&J'r'J(r(J)r)J*r*J+r+J,r,J-r-J.r.J/r/ SS K0J1r1 SS K2J3r3 "S S\5r4"SS5r5"SS5r6"SS5r7"SS5r8"SS5r9"SS\9\.5r:"SS\9\'5r;"SS\9\&5r<"SS \9\+5r="S!S"5r>S#r?\@S$:Xa\?"5 S%/rAg)&a A graphical tool for exploring chart parsing. Chart parsing is a flexible parsing algorithm that uses a data structure called a "chart" to record hypotheses about syntactic constituents. Each hypothesis is represented by a single "edge" on the chart. A set of "chart rules" determine when new edges can be added to the chart. This set of rules controls the overall behavior of the parser (e.g. whether it parses top-down or bottom-up). The chart parsing tool demonstrates the process of parsing a single sentence, with a given grammar and lexicon. Its display is divided into three sections: the bottom section displays the chart; the middle section displays the sentence; and the top section displays the partial syntax tree corresponding to the selected edge. Buttons along the bottom of the window are used to control the execution of the algorithm. The chart parsing tool allows for flexible control of the parsing algorithm. At each step of the algorithm, you can select which rule or strategy you wish to apply. This allows you to experiment with mixing different strategies (e.g. top-down and bottom-up). You can exercise fine-grained control over the algorithm by selecting which edge you wish to apply a rule to. 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( ( 9rBcPUR5 XlUR5 gr)rtr]rrs r?rChartResultsView.set_charts   rBcPUR5 XlUR5 gr)rtrFrr<rOs r? set_grammarChartResultsView.set_grammar s   rBcrURcgURR5 SUlg! N =frrrs r?rdChartResultsView.destroyrrc<URR"U0UD6 grr7r8s r?r~ChartResultsView.packr;rB) rNr]rFrarKrJrGrIrH)Tr)rRrSrTrUrqrrTr[rirLrMrtrr|rdr~rWrQrBr?r?r?s@B !,$V'% *   )rBr?c\rSrSrSrS\R S\R SS.rSrSr S r S r S r S r S rSrSrSrSrSS/rSrSrSrSrSrSrSrSrSrSrSrSrS r S!r!S"r"g#)$ ChartCompareri a :ivar _root: The root window :ivar _charts: A dictionary mapping names to charts. When charts are loaded, they are added to this dictionary. :ivar _left_chart: The left ``Chart``. :ivar _left_name: The name ``_left_chart`` (derived from filename) :ivar _left_matrix: The ``ChartMatrixView`` for ``_left_chart`` :ivar _left_selector: The drop-down ``MutableOptionsMenu`` used to select ``_left_chart``. :ivar _right_chart: The right ``Chart``. :ivar _right_name: The name ``_right_chart`` (derived from filename) :ivar _right_matrix: The ``ChartMatrixView`` for ``_right_chart`` :ivar _right_selector: The drop-down ``MutableOptionsMenu`` used to select ``_right_chart``. :ivar _out_chart: The out ``Chart``. :ivar _out_name: The name ``_out_chart`` (derived from filename) :ivar _out_matrix: The ``ChartMatrixView`` for ``_out_chart`` :ivar _out_label: The label for ``_out_chart``. :ivar _op_label: A Label containing the most recent operation. - intersectionunion)randorcS/S-n[U5UlSUlSUlURUlURUlSUR0UlURUlSUl[5Ul URRS5 URRSUR5 URRSUR5 URUR5 URUR5 UR!UR5 UR#UR5 UR%UR5 UHnUR'U5 M g)NNonezChart Comparisonr\ )r _emptychart _left_name _right_name _left_chart _right_chart_charts _out_chart _operatorr rarbrcrd _init_menubar_init_chartviews _init_divider _init_buttons_init_bindings load_chart)r<chart_filenamesfaketokfilenames r?rqChartComparer.__init__Bs2$( >!!++ ,, 0 01 **T  +,  t||4  t||4 4::& djj) 4::& 4::& DJJ'(H OOH %(rBcrURcgURR5 SUlg! 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This is used by ``ChartParserApp`` to allow students to interactively experiment with various chart parsing techniques. It is also used by ``Chart.draw()``. :ivar _chart: The chart that we are giving a view of. This chart may be modified; after it is modified, you should call ``update``. :ivar _sentence: The list of tokens that the chart spans. :ivar _root: The root window. :ivar _chart_canvas: The canvas we're using to display the chart itself. :ivar _tree_canvas: The canvas we're using to display the tree that each edge spans. May be None, if we're not displaying trees. :ivar _sentence_canvas: The canvas we're using to display the sentence text. May be None, if we're not displaying the sentence text. :ivar _edgetags: A dictionary mapping from edges to the tags of the canvas elements (lines, etc) used to display that edge. The values of this dictionary have the form ``(linetag, rhstag1, dottag, rhstag2, lhstag)``. :ivar _treetags: A list of all the tags that make up the tree; used to erase the tree (without erasing the loclines). :ivar _chart_height: The height of the chart canvas. :ivar _sentence_height: The height of the sentence canvas. :ivar _tree_height: The height of the tree :ivar _text_height: The height of a text string (in the normal font). :ivar _edgelevels: A list of edges at each level of the chart (the top level is the 0th element). This list is used to remember where edges should be drawn; and to make sure that no edges are overlapping on the chart view. :ivar _unitsize: Pixel size of one unit (from the location). This is determined by the span of the chart's location, and the width of the chart display canvas. :ivar _fontsize: The current font size :ivar _marks: A dictionary from edges to marks. Marks are strings, specifying colors (e.g. 'green'). r (Nc URSS5nURSS5nURSS5UlXl0Ul/Ul0Ul0Ul/UlSUlSUl /Ul SUl UcZ[5nURS5 U4S jnU4S jnURS U5 [US US 9n U R!SS9 X`lOX lUR%U5 UR'UR"5uUlUlSUR*S'SUR*S'U(a][-UR"SSS9n U R!SSS9 [/U SS9UlSUR0S'UR0R!SS9 OSUlU(a=UR'UR"SS5upXsUlUlS UR4S'OSUlUR75 UR95 UR;5 UR=5 UR*RS!UR>5 g)"z$ Construct a new ``Chart`` display. draw_treer draw_sentencerfontsizer9Nz Chart Viewc$UR5 grrd)rrs r?destroy1$ChartView.__init__..destroy1   rBc$UR5 grr?)rs r?destroy2$ChartView.__init__..destroy2rBrBqDonerurxrCi,rrrEsunkrrrr)r}r{rr#e0e0e0rrrrArz ) get _fontsizer]rj _edgelevels _edgetagsr_ _treetoks_treetoks_edge_treetoks_index _tree_tags_compactr rbrcrr~ra _init_fonts _sb_canvas _chart_sb _chart_canvasrr_sentence_canvas_tree_sb _tree_canvas_analyzerl_resize_grow _configure) r<rnrkwr;r<rr@rDbrsbrXs r?rqChartView.__init__s( FF;* 2  C0  "   <$C IIl # # !  HHS( #s:A FFF !JJ 04tzz/J,+'*8$,.=) 4::fQ?F KKV(K 3$*6"$=D !2;D ! !, /  ! ! & &F & 3%)D ! ??4::sC@LR24 .T]D-*-D  h ' $D       t?rBc[SSURS9Ul[SURS9Ul[[ 5SS9UlUR SUR 5 g)Nr8r:familyweightsizerfrhr3r3*Font)rrM _boldfont_fontr_sysfont option_addrs r?rUChartView._init_fonts?sM[dnnU4>>B &(6"23  /rBc[USSS9nURX2US9 [USS9n[USS9nURS S S 9 URS US S9 URUS'UR US'Xv4$)z; Helper for __init__: construct a canvas with a scrollbar. rHrrI)r}r|r{rKrvertical)orientrByr{r}rDyesr{r}r|rwyscrollcommand)rr~rr yviewr)r<rr|r}r{rrXrbs r?rVChartView._sb_canvasFstF15 4 895vj 1 W3' d5 9 9 #%66 |rBc>URRSSS5 g)NscrollunitsrXryrs r? scroll_upChartView.scroll_upY   2w7rBc>URRSSS5 g)Nr|rr~rrs r? scroll_downChartView.scroll_down\   1g6rBc>URRSSS5 g)Nr|r}pagesrrs r?page_upChartView.page_up_rrBc>URRSSS5 g)Nr|rrrrs r? page_downChartView.page_downbrrBcURR5n[[URS5XR -[ RS--5nURRUS9 URRURSS9 US[ R-- U- UlURbURURS'gg)z Grow the window, if necessary rrrrrJN) r]r$rr%rX _unitsizer7_MARGIN configurerY_sentence_height)r<rrs r?r^ChartView._growes KK " " $ ""7+ ,a...@9CTCTWXCX.X  $$5$1 $$D,>,>x,H$I!i&7&7"771<  ,.2.C.CD ! !( + -rBc6URR[U5*S9 URR[U5*S9 URR[U5*S9 UR 5 UR 5 UR5 gN)rh)rmrabsrlrnr\r^rlr<rhs r? set_font_sizeChartView.set_font_sizezsn 3t9*-   s4yj 1 c$iZ0   rBc,[UR5$r)rrMrs r? get_font_sizeChartView.get_font_sizes4>>""rBcURR5nURS[R-- U- UlUR 5 g)z The configure callback. This is called whenever the window is resized. It is also called when the window is first mapped. It figures out the unit size, and redraws the contents of each canvas. rN)r]r$rr7rrrl)r<rrs r?r_ChartView._configures? KK " " $''A (9(9$99Q> rBc^UbeXl/Ul0UlUR5 UR 5 UR 5 UR 5 UR5 gURH%nX R;dMURU5 M' UR5 g)a= Draw any edges that have not been drawn. This is typically called when a after modifies the canvas that a CanvasView is displaying. ``update`` will cause any edges that have been added to the chart to be drawn. If update is given a ``chart`` argument, then it will replace the current chart with the given chart. N) r]rNr_r\r^rl erase_treer]rO _add_edge)r<rnrs r?rChartView.updates{  K!D DK MMO JJL IIK OO  LLN ~~-NN4($ LLNrBcUR5up4URUHLnUR5upgX6s=::aU:d+O Xcs=::aU:dO X6s=:XaUs=:Xa U:XdMF g ML g g)z Return True if the given edge overlaps with any edge on the given level. This is used by _add_edge to figure out what level a new edge should be added to. TF)rrN)r<rlvls1e1 otheredges2e2s r?_edge_conflictChartView._edge_conflictse 99;))#.I ~~'HR 2 2=b=b6J"6J6J7K/rBc URn[U[5(aUR5n/nUR 5H\n[U[ 5(a*UR [UR555 MBUR [U55 M^ SRU5nOUR5nSnX64HnURSSXpRSSS9nURU5n URU5 U Sn [UR!5S5n [UR"X- 5Ul[UR$U S U S- 5UlM g ) z Given a new edge, recalculate: - _text_height - _unitsize (if the edge text is too big for the current _unitsize, then increase _unitsize) rprrnwrDrvr3rjustifyrrrN)rXrIr&rErHrrDstrr1r'joinr&rlr\r#rlengthr _text_height) r<rr/rErhseltsrNrHsr"r\redgelens r? _analyze_edgeChartView._analyze_edges)    dH % %((*CGxxzc;//NN3szz|#45NN49- " ((7#C((*CCA--11>>$ C66#;D HHSMGE$++-+G ADN #D$5$5tAwa7H ID rBc[U[5(agXR;agURU5 UR 5 UR (dVUR RU/5 [UR 5S- nURX5 UR5 gSnU[UR 5:aFUR R/5 UR5 U[UR 5:aMFX2:a5URX5(dUR URU5 OUS- nMURX5 g)z Add a single edge to the ChartView: - Call analyze_edge to recalculate display parameters - Find an available level - Call _draw_edge Nrr) rIr rOrr^rTrNrDr _draw_edger]r)r<rminlvlrs r?rChartView._add_edges" dH % %  >> !  4  }}    # #TF +d&&'!+C OOD & LLN T--..  ''+ T--.. }T%8%8%C%C  %,,T2 1HC "rBcxSn[[UR55HnXRU;dMUn O UcgUS-UR-nURS-nUR R SS5 URS:wa,UR R SXE- UR- 5 gg)Nrrmovetog?r)rrrN_chart_level_sizerrXry _chart_height)r<rlevelrMrtr1s r?rChartView.view_edgess4++,-A''**. =  QY$00 0    #   3/    "    $ $X$:L:L/L M #rBc URnUR5UR-[R-nUR 5UR-[R-nXT:XaU[ SURS- 5- nUS-UR-nURXFXVSSS9n[U[5(a/nUR5H\n [U [5(a*UR[U R555 MBUR[!U 55 M^ UR#5n O/nSn SR%US U 5n SR%XS 5n UR'US-XkUR(S S 9n UR+U 5S S -nUR+U 5SUR+U 5S-S - nUR-US - US - US -US -5nUR'US -XlUR(S S 9nUR'XE-S - U[UR/55SUR0S9nX}UUU4UR2U'X4SjnUR5U SU5 UR5USU5 UR5USU5 UR5USU5 UR5USU5 UR7U5 g )z& Draw a single edge on the ChartView. rrlastr)r0rrrpNr)rvr3rrrrvrr3c(URSU5 grr)rr<rs r?r ChartView._draw_edge..cb<rrBr)rXrrr7rrrrr(rIr&rHrrDrr1r'r5rr&rmr\ create_ovalrErlrOr* _color_edge)r<rrr/rarcrtlinetagrHrNposrhs1rhs2rhstag1dotxdotydottagrhstag2lhstagrs r?rChartView._draw_edges   ZZ\DNN *Y->-> > XXZ$.. (9+<+< < 8 #a!+, ,B 1W.. .--rF!-D dH % %Cxxzc;//JJs3::<01JJtCy) " ((*CCCxxDS "xxD "--Q4::d-Svvgq!A%w"QVVG_Q%771<tax4!8TAXF--q!TZZPT-U WM13txxz?3T^^  !(&'6Jt  1 7L"- 7L"- 7L"- 6<, 6<, rBcXR;agURnUbUbXR;aURUnURUnURUSUS9 URUSUS9 URUSX3S9 URUSUS9 URUSUS9 gURR 5nXR;aUR URU5 UR5(a*UR5SU4:XaUR US S 5 g[U[5(aUR US S 5 gUR US S5 g)z} Color in an edge with the given colors. If no colors are specified, use intelligent defaults (dependent on selection, etc.) Nrrrrr}rrr#084#042z#48cz#246z#00fz#008) rOrXr_rr]r$rrJrrIr )r<r linecolor textcolorr/tagsrs r?rChartView._color_edgeGsJ ~~ %      Y%:{{" KK- >>$'D LLayL 1 LLayL 1 LLayL D LLayL 1 LLayL 1  &&(A{{"  T!23!!diikaV&;  vv6D(++  vv6  vv6rBcBX RU'URU5 g)z Mark an edge N)r_rr<rr s r?r ChartView.mark_edgefs! D rBcUcE[URR55n0UlUHnURU5 M gURU URU5 g)z Unmark an edge (or all edges) N)rr_rr)r<rold_marked_edgess r?rChartView.unmark_edgems\ <#DKK$4$4$67 DK(  &) D!   T "rBcFUR5 URX5 gr)rr rs r?rChartView.markonly_edgezs  t"rBc SnSnURnURR5HnURSS[ U5UR SSS9nUR U5nURU5 US[R-n[Xq5n[X&SUS- 5nM Xl X l URS[R--UlURR5HnUR!U5 M URS-UlS[R$UR--UlUR)5 g ) zi Analyze the sentence string, to figure out how big a unit needs to be, How big the tree should be, etc. FrrrDrrrrN)rXr]leavesr&r'rmr\r#r7 _LEAF_SPACINGrrrrrrrr_TREE_LEVEL_SIZE _tree_heightr]) r<unitsize text_heightr/leafr"r\rrs r?r\ChartView._analyze~s;    KK&&(D--14:DJJtV C66#;D HHSMGi555E5+Hk7T!W+<=K)"' $ 1 1A 8I8I4I IKK%%'D   t $("&!2!2Q!6!;!;d>O>O!OP rBcjURnURR5UR-[R S--n[ UR5nUS-UR-Ul SSX R4US'UR(aSSX R4URS'gg)z Update the scroll-regions for each canvas. This ensures that everything is within a scroll-region, so the user can use the scrollbars to view the entire display. This does *not* resize the window. rrrqN) rXr]r$rr7rrrNrrr[r)r<r/rlevelss r?r]ChartView._resizes    &&(4>>9IO>O0PD  n - rBc SnURnURnURn[Rn/Ul[ SURR5S-5GH[nX`R-U-nU(a$URUSXq5nURU5 U(a.URUSXpR5n URU 5 URUSXq5n URU 5 URUS-S[U5SURS9n URU 5 US-S:XaAU(aUR!WSS9 U(aUR!W SS9 UR!U SS9 GMU(aUR!WS S9 U(aUR!W S S9 UR!U S S9 GM^ g ) z^ Draw location lines. These are vertical gridlines used to show where each location unit is. iPrrrrrgray60rgray80N)r[rYrXr7r _loclinesrr]r$rr(r+rr&r'rmr) r<BOTTOMc1c2c3marginrMrAt1t2t3t4s r?_draw_loclinesChartView._draw_locliness      " "   ""q$++002Q67ANN"V+A^^Aq!4 R ^^Aq!-B-BC R 1a0B LL AqtAwt$**UB LL  1uzMM"8M4MM"8M4 bx 0MM"8M4MM"8M4 bx 098rBc ^URR5S:XagURn[Rn[Rn[ URR 55HupEX@R-U-nX`R-nXg-S- nURX[U5URSSS9n URU 5n URUS-U S[RS- - US- U S[RS- -S S S 9n URU 5 M g) zDraw the sentence string.rNrrrDrrrz#f0f0f0r)r]r$rYr7rrGrrr&r'rmr\r)rr+) r<r/rrtrMrrarcrAr"r\rts r?_draw_sentenceChartView._draw_sentences ;; ! ! #q (   ! !""    !3!3!56GA^^#f,Bnn$BA A--4:DJJsF C66#;D##QQ922Q67QQ922Q67! $B KKO!7rBcURHnURRU5 M /UlSUlSUlgr)rSr[r#rPrQrR)r<r"s r?rChartView.erase_trees;??C    $ $S )#" rBc.UcURcgUc URnURU:waUURRU5Vs/sHn[U[5(dMUPM snUlXlSUl[UR 5S:XagURHnURRU5 M UR UR nURXAR55 UR5 URR5UR-S[ R"--nUR%5[ R&UR(--nSSXV4URS'gs snf)Nrrrq)rQr]treesrIr'rPrRrrSr[r# _draw_treetokr_draw_treecycler$rr7rrrr)r<rr2r"treewhs r?r;ChartView.draw_treesP .cbAs'($ rBr)rrPr[r7rr]r$rr&rlrSrDr\rrRcreate_polygonr*) r<rgr/rrBr"_rtrMrAr}rs r?r ChartView._draw_treecycle&sY t~~ ! # S00   "" &&(4>>9FBQFmmE1TNNmS s#VVC[ 1as4>>*+Ac$..1A59::A(((""r61q5!VQV$#C OO " "3 ' $ ! JJsL" -#,rBc URn[Rn/nUHqn[U[5(a*UR XrUS-5upUR U5 MBUR SU-S-UR-S- U-5 US- nMs U(a[U5[U5- n O SU-S-UR-S- U-n US- nU[RUR--n URU U SS[UR55SURS9n UR R U 5 U [R-UR-n [#Xa5GHup[U[5(aBU(a;UR%U XR-U U SSS9n UR R U 5 [U[5(aCU(d<UR%U XR-U U SS S S 9n UR R U 5 [U[5(aMUR%U XR-U S SSS9n UR R U 5 GM X4$) zm :param index: The index of the first leaf in the tree. :return: The index of the first leaf after the tree. rrrcenterr)rrrvr}r3r)rr}z#048z2 3)rr}ri')r[r7rrIr'r rDrsumrrrr&rrgrlrSzipr()r<treetokindexdepthr/rchild_xsrjchild_xnodexnodeyr"childychildxs r?r ChartView._draw_treetokGsd   ""E%&&!%!3!3E%!)!L(UQ$.. @1 Dv MN   MCM1EY]dnn4q86AE QJE33d6G6GGHmm  W]]_%  s#333d6G6GG 3MF%&&5mm--- $&&s+%&&umm---$&&s+eT**mm--- $&&s+E4H|rBc8UR(a+URRS5 UR5 UR(a+URRS5 UR 5 UR RS5 0Ul[[UR55H*nURUHnURX!5 M M, URHnURU5 M UR5 g)z! Draw everything (from scratch). rN)r[r#r;rYrrXrOrrrNrr]rr)r<rrs r?rlChartView.draws       $ $U + NN    ! ! ( ( /    ! !!%(T--./C((-*.0KKD NN4   rBcBSURRU05U'grrrs r?rChartView.add_callbackrrBcVUcURU gURUU g! g=frrrs r?rChartView.remove_callbackrrcXR;ag[URUR55HnU"U6 M grrrs r?rChartView._fire_callbacksrrB)rlrjr]rXrrrWrTrNrOrmrMrr_rarYrrnrr[rrZrSrPrQrRrr)rtrrx)r)NN)#0df),rRrSrTrUr=rrr_CHART_LEVEL_SIZErqrUrVrrrrr^rrr_rrrrrrrr rrr\r]rrrr;rr r rlrrrrWrQrBr?r7r7s,\MGW@r0&8787D*# 2  JD)#V N3j7> ##$LQ('1R4!9@,.BN`28rBr7cD^\rSrSrSrU4SjrU4SjrU4SjrSrU=r $)EdgeRuleiz To create an edge rule, make an empty base class that uses EdgeRule as the first base class, and the basic rule as the second base class. (Order matters!) cl>URRSnXlURS- Ulgr) __class__ __bases___edge NUM_EDGES)r<rsuperr6s r?rqEdgeRule.__init__s,((+ 1,rBc'># URRSnX0R4- nUR"XU/UQ76ShvN gN7fr)r6r7r8apply)r<rnrOrr:r6s r?r=EdgeRule.applysA((+ **;;tGURRSnURU5$r)r6r7__str__)r<r:r6s r?r@EdgeRule.__str__s&((+}}T""rB)r9r8) rRrSrTrUr=rqr=r@rW __classcell__)r6s@r?r4r4s - = ##rBr4c\rSrSrSrg)TopDownPredictEdgeRuleirQNrRrSrTrUrWrQrBr?rDrDrBrDc\rSrSrSrg)BottomUpEdgeRuleirQNrErQrBr?rHrHrFrBrHc\rSrSrSrg)BottomUpLeftCornerEdgeRuleirQNrErQrBr?rJrJrFrBrJc\rSrSrSrg)FundamentalEdgeRuleirQNrErQrBr?rLrLrFrBrLc\rSrSrS5SjrSrSrSrSrSr Sr S r S r S r S rS rSrSrSrSrSrSrSrSS/r/SQrSrSrSrSrSrSrSrSr S r!S!r"S"r#S#r$S$r%S%r&S6S'jr'S(r(S7S)jr)S*r*S+r+\,"5/r-\."5/r/\0"5/r1\2"5/r3\4"5/r5\-\/-\5-r6\1\5-r7\3\5-r8S,r9S-r:S.r;S/rS2r?S3r@S4rAg&)8ChartParserAppicURX5 SUl[5UlURRU5 URR SUR 5 [ UR5n[ UR5n[ UR5nURSSS9 URSSS9 URSSSS9 URUR5 UR5 URU5 URU5 URU5 UR5 SUlSUlUR!5 g! [#S 5 UR 5 e=f) Nr\rxryrurArrrwzError creating Tree View) _init_parserrar rbrcrdrr~rU_init_animation_init_chartview_init_rulelabelrr_matrix_resultsrprint)r<rOrrbframe3frame2frame1s r?rqChartParserApp.__init__s7 '*  DJ JJ  U # JJOOM4<< 84::&F4::&F4::&F KKXFK 3 KKXCK 0 KKXF1K =   TZZ (  "   (   (   v &    DL DM    !  , - LLN s E E''FcbURcgURR5 SUlgrrr<rs r?rdChartParserApp.destroys& ::    rBc\[5(agURR"U0UD6 g)z Enter the Tkinter mainloop. This function must be called if this demo is created from a non-interactive program (e.g. from a secript); otherwise, the demo will close as soon as the script completes. N)r(rarr8s r?rChartParserApp.mainloop!s% 99  T,V,rBc<XlX lUR5 gr)rF_tokens _reset_parser)r<rOrs r?rPChartParserApp._init_parser0s   rBcv[UR5UlURRUR5 URR 5Ul[5RUR UR5HnM URR5Ul SUl gr) r#rF_cp initializerarnr]r!r=step_cpsteprJ)r< _new_edges r?rbChartParserApp._reset_parser5s}&t}}5 DLL)hhnn& &--dkk4==II Jxx}} rBc[[5SS9UlURSUR5 [ U5UlUR R URRS55 [SSUR R5S9Ul [SUR R5S9Ul g) Nr3rjrkrhr8r:reri) rrrnror_sizercgetrLrlrmrs r?rUChartParserApp._init_fontsDs&(6"23  /D\  t}}))&12[djjnnFVW4::>>3CD rBc[UR5UlURRS5 [UR5UlURRS5 SUlg)Nrrr)rra_stepr_animate _animatingrs r?rQChartParserApp._init_animationPsODJJ'  qtzz*  !rBc[URUSSS9UlURRSUR5 g)Nr)r;r<r)r7r]_cvr_click_cv_edge)r<rms r?rRChartParserApp._init_chartview\s2T[[&AQO h(;(;zzzr\rzz rz r2rar/zz z rc$URS5$rrras r?/ChartParserApp._init_bindings.. arBrc$URS5$)Nrrrs r?rrrrBrc$URS5$)Nrrrs r?rrrrBrcJURUR5(+5$r)rrL)rrs r?rrsQUUquuw;5GrB)rarcrurrrrrdhelp save_chartrrrrr_stop_animation edit_grammar edit_sentencerqrprs r?rChartParserApp._init_bindingss  2 23 $(("6"67  488#3#34 $(("4"45  t||4  t||4  *  t7  t7  tzz2 T334 T445 T??@  4#7#78  t'8'89  t'9'9: @A @A @A GHrBc< [UR5n[USS9nURSSURSS9 URSSURSS9 URSSUR S S9 UR 5 URS URS 9 URS URS 9 UR 5 URS SURSS9 URSSUS9 [USS9nURSSURSS9 URSSURSS9 URSSUS9 [USS9nURSSURS9 URSSURS9 URSSUS9 [USS9nURSSURSS9 URSSUR S S9 URS!SUR"S"S9 UR 5 URS#UR$S 9 URS$UR&S 9 URS%UR(S 9 URS&UR*S 9 URS'UR,S 9 URS(SUS9 [USS9nUR/S)SUR0S*S+9 UR 5 UR3S,SUR4SS-9 UR3S.SUR4SS/S09 UR3S1SUR4S2S3S09 UR3S4SUR4S5S6S09 URS7SUS9 [USS9nUR3S8UR6SS9UR8S:9 UR3S;UR6SSUR8S:9 UR3S?UR6SS@UR8S:9 UR3SAUR6SSBUR8S:9 URSCSUS9 [USS9nURSDSUR:S9 URSESUR<SFS9 URSGSUS9 URR?USH9 g)INrrz Save Chartrrrrz Reset ChartzCtrl-rz Save Grammarrz Load Grammarrrrrrz Edit GrammarrzCtrl-g Edit TextzCtrl-tEditr<r)rgr4rwResultsViewzTop Down Strategyr2zBottom Up StrategyrazBottom Up Left-Corner Strategyr/zBottom Up RulezBottom Up Left-Corner RulezTop Down Init RulezTop Down Predict RulezFundamental RuleApplyryr)rgr4rzrz No Animation)rgr4rzvaluezSlow Animationr)rgr4rzrrzNormal AnimationrrzFast AnimationrrAnimateTinyr)rgrzr4rrwSmallr8MediumLargeHugeZoomAbout InstructionsF1Helpr) r rarrrrr save_grammar load_grammarrdrrr view_matrix view_resultsrrrrrrrradd_checkbuttonrpadd_radiobuttonrqrlresizeaboutrr) r<rreditmenuviewmenurulemenu animatemenuzoommenuhelpmenus r?rChartParserApp._init_menubars[tzz"+OO  OO  1djjh    >4;L;LM>4;L;LM At||   &AHE+ %%  &&  &AHE+ At7G7G   94CTCTU&AHE+%**  &++  266   #3T^^L.8Q8Q   #7ASAST)43H3H   #5t?O?OP'QXF7A. ##A  $  !!### A Q $  ##"]] $  ##$]] $  ##"]] $  )q{K+  ZZKK !    ZZKK !    ZZKK !    ZZKK !    ZZKK !  &AHE+7aL Atyyd   &AHE w'rBczXR:waURU5 gURR5 gr)rJ _select_edgerurrs r?rvChartParserApp._click_cv_edge}s, ?? "   d # HH   !rBc\URU5 URRU5 gr)rrurrs r?_select_matrix_edge"ChartParserApp._select_matrix_edges" $ 4 rBc0XlURRUS5 URRU5 UR(aURRU5 UR(aURR U5 gg)Nz#f00)rJrurr;rTrrs r?rChartParserApp._select_edgesd tV, 4 << LL & &t , << LL " "4 ( rBcSUlURR5 URR5 UR(aURR5 ggr)rJrurrrTrs r?_deselect_edgeChartParserApp._deselect_edgesE   << LL $ $ & rBcURURR55 URR 5 URR U5 URR US5 URRU5 UR(aURR 5 UR(aURR U5 UR(aURRU5 UR(aURR U5 gg)Nr1) _display_rulerecurrent_chartrulerurr;rrrTrUrs r?_show_new_edgeChartParserApp._show_new_edges 4885578  4  tV, 4 << LL   ! << LL & &t , << LL " "4 ( == MM  & rBcSUl[URS[=(d SR 5SSS9 g! [URS[=(d SR 5SS9 g=f)NrzHelp: Chart Parser ApplicationrKfixed)rr3r)rrrrar=striprs r?rChartParserApp.helpsb   0B%%'     0B%%'  s 2<3A1c Sn[SU5 g)Nz5NLTK Chart Parser Application Written by Edward LoperzAbout: Chart Parser Application)r)r<rABOUTs r?rChartParserApp.aboutsM2E:rBrr))zPlaintext grammar file.cfgrrc\[URSS9nU(dg[US5n[R"U5nSSS5 WUlUR RU5 UR(aURRU5 UR(aURR5 UR(aURRU5 URRU5 g!,(df  N=f![aneSnAff=f)zLoad a chart from a pickle filerrNr )r rrrr r]rurrTrrrUrerr)r<rrrrnrs r?rChartParserApp.load_charts"++i   Sh% F+&DK HHOOE "|| &&u-|| **,}} ''. HH  u %&% S  Ss/ DD CD DD D+%D&&D+c[URSS9nU(dg[US5n[R"UR U5 SSS5 g!,(df  g=f![ aneSnAff=f)zSave a chart to a pickle filerrNr)rrrrrr]rrrs r?rChartParserApp.save_chartsc$++i   Rh% DKK1&%% R  Rs4 A&"A A& A#A&#A&& A60A11A6c[URSS9nU(dgURS5(a,[US5n[R "U5nSSS5 O8[U5n[ R"UR55nSSS5 URW5 g!,(df  N =f!,(df  N1=f![an[SSU-5 SnAgSnAff=f)z!Load a grammar from a pickle filerrNrr zError Loading GrammarUnable to open file: %r) r GRAMMAR_FILE_TYPESrrrr r fromstringreadr|rr)r<rrrrOrs r?rChartParserApp.load_grammars"--   U  ++(D)V$kk&1G*)(^v!nnV[[];G$   W % *)$^ U -/H8/S T T UsG"C B*C +%B;C * B84C ; C C C/C**C/cb[URSS9nU(dgURS5(aC[US5n[R "UR UR4U5 SSS5 g[US5nURR5nUVs/sH2oUR5URR5:XdM0UPM4 nnUVs/sH2oUR5URR5:wdM0UPM4 nnUHnURSU-5 M UHnURSU-5 M SSS5 g!,(df  g=fs snfs snf!,(df  g=f![an [SSU-5 Sn A gSn A ff=f) Nrrrrrz%s zError Saving Grammarr)rrrrrrr]rarF productionsrErwriterr) r<rrrprodsprrestprodrs r?rChartParserApp.save_grammar sZ$--   T  ++(D)WKKdll ;WE*)(C(G MM557E(-R1DMMrBcXlURRU5 UR(aURRU5 ggr)rFrer|rUr{s r?r|ChartParserApp.set_grammar6 s7  W% == MM % %g . rBcSRUR5nSnSn[URX$URU5 g)NrprzEnter a new sentence to parse.)rrarra set_sentence)r<rsentencerbinstrs r?rChartParserApp.edit_sentence< s688DLL)0DJJ1B1BEJrBc`[UR55UlUR5 gr)rsplitrar)r<rs r?rChartParserApp.set_sentenceB sHNN,-  rBcURbURR5 [URUR5UlURR SUR 5 gr)rTrdrYrar]rrrs r?rChartParserApp.view_matrixJ sL << # LL "&tzz4;;?  !!(D,D,DErBcURbURR5 [URURUR 5Ulgr)rUrdr?rar]rFrs r?rChartParserApp.view_resultsP s8 == $ MM ! ! #(T[[$--P rBcdSUlURURR55 gr)rrrrlrLrs r?rChartParserApp.resizeY s" 4::>>+,rBc URRU5 URR[ U5*S9 UR R[ U5*S9 UR R[ U5*S9 gr)rurrmrrrlrnrs r?rChartParserApp.set_font_size] se t$ 3t9*-   s4yj 1 c$iZ0rBcH[URR55$r)rrlrLrs r?rChartParserApp.get_font_sizec s4::>>#$$rBNcxUR(aSUlgURS5 URR5(aURnUb[UbXUR R U"U5/5 UR5nUc"URR5 SUlggUR R U5 UR5 gUR R U5 URR5(aSUlUR5 gURHnUbM O URR5 UR(aURR5 UR(aURR5 gg)Nrr)rrrrprLrJre set_strategy_apply_strategyrurrq_animate_strategyrhrrTrU)r<strategy edge_strategy selectionnewedgers r?apply_strategyChartParserApp.apply_strategyj sH ??DO  4  ::>>  I%M,E%%}Y'?&@A..0?HH((*&*DO#%%h/$$& HH ! !( +}}  """#&&( LLD|)!<<LL'')==MM((*!rBcSUlgr)rrrs r?rChartParserApp._stop_animation s rBc$URS:XagUR5bURR5S:XdURR5S:XagURR5S:Xa'UR R SUR5 gURR5S:Xa'UR R SUR5 gUR R SUR5 gg)Nrri rir)rrrrqrLrpraafterr)r<speeds r?r ChartParserApp._animate_strategy s ??a      ! -}}  "a'4::>>+;q+@}}  "a'   t'='=>""$)   t'='=>   T%;%;< .rBcX[UR5nUbURU5 U$r)nextrhr)r<new_edges r?rChartParserApp._apply_strategy s) %      )rBcUcSURS'g[U5nX RS'URR5ng)Nrrv)r|rrur)r<rulerrhs r?rChartParserApp._display_rule s@ <')D  V $t9D'+  V $88))+DrBc<URURS5 gr)r _TD_INITrs r?rChartParserApp.top_down_init s DMM40rBcDURUR[5 gr)r  _TD_PREDICTrDrs r?rChartParserApp.top_down_predict s D,,.DErBcDURUR[5 gr)r _BU_RULErHrs r?rChartParserApp.bottom_up s DMM+; NP VP VP -> VP PP | V NP | V NP -> Det N | NP PP PP -> P NP # Lexical productions. NP -> 'John' | 'I' Det -> 'the' | 'my' | 'a' N -> 'dog' | 'cookie' | 'table' | 'cake' | 'fork' V -> 'ate' | 'saw' P -> 'on' | 'under' | 'with' z*John ate the cake on the table with a forkzJohn ate the cake on the tablez grammar= (z ,)z tokens = %rz,Calling "ChartParserApp(grammar, tokens)"...) rrrrrVrr'rNr)rOsentrrs r?appr5 snn G 8D +D $**, F ,##% vtDzC'()& #J -& ! 897#,,.rB__main__r5)Br=os.pathr rtkinterrrrrrrr r r r tkinter.filedialogr r tkinter.fontrtkinter.messageboxrr nltk.drawrrrnltk.draw.utilrrrrrr nltk.grammarrrnltk.parse.chartrrrr r!r"r#r$r%r& nltk.treer' nltk.utilr(r*rYr?rr7r4rDrHrJrLrNr5rR__all__rQrBr?rCs<    B2GG*   }@I)I)bL)L)hJTJTd N N p##, X'9  x!4  +E  ($= c Gc GL/< zE 'rB