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269 /F0 13/Times-Roman@0 SF(The History of PCCTS)228.232 84 Q/F1 11/Times-Roman@0
270 SF(The Purdue Compiler)190.468 108 Q(-Construction T)-.22 E(ool Set)-.88 E/F2
271 10/Times-Italic@0 SF -.92(Te)262.245 144 S -.37(re).92 G(nce P).37 E(arr)-.8 E
272 /F3 10/Times-Roman@0 SF -.15(Pa)234.755 156 S(rr Research Corporation).15 E
273 (Minneapolis, Minnesota)239.39 168 Q(and)280.78 180 Q(Uni)239.315 192 Q -.15
274 (ve)-.25 G(rsity of Minnesota).15 E
275 (Army High Performance Computing Research Center)180.38 204 Q F2
276 ([Updated 8-7-94])252.31 228 Q F1 .084(The PCCTS project be)97 259.6 R -.055
277 (ga)-.165 G 2.834(na).055 G 2.833(sap)220.547 259.6 S(arser)240.876 259.6 Q
278 .083(-generator project for a graduate course at Purdue Uni-)-.22 F -.165(ve)72
279 275.6 S 1.085(rsity in the F).165 F 1.086
280 (all of 1988 taught by Hank Dietz\212 translator)-.165 F 1.086
281 (-writing systems.)-.22 F 1.086(Under the guid-)6.586 F .627
282 (ance of Professor Dietz, the parser generator)72 291.6 R 3.377(,A)-.44 G .626
283 (NTLR \(originally called YUCC\), continued after)285.18 291.6 R .253
284 (the termination of the course and e)72 307.6 R -.165(ve)-.275 G .254
285 (ntually became the subject of T).165 F .254(erence P)-.77 F(arr')-.165 E 3.004
286 (sM)-.605 G(aster')445.083 307.6 Q 3.004(st)-.605 G(hesis.)479.25 307.6 Q
287 (Originally)72 323.6 Q 4.092(,l)-.715 G -.165(ex)126.406 323.6 S 1.342
288 (ical analysis w).165 F 1.342(as performed via ALX which w)-.11 F 1.342
289 (as soon replaced by W)-.11 F 1.341(ill Cohen')-.44 F(s)-.605 E .594
290 (DLG in the F)72 339.6 R .594(all of 1989 \(DF)-.165 F .595(A-based le)-.814 F
291 .595(xical-analyzer generator)-.165 F 3.345(,a)-.44 G .595(lso an of)367.188
292 339.6 R .595(fshoot of the graduate)-.275 F(translation course\).)72 355.6 Q
293 .877(The alpha v)97 375.2 R .877(ersion of ANTLR w)-.165 F .877(as totally re)
294 -.11 F .876(written resulting in 1.00B.)-.275 F -1.221(Ve)6.376 G .876
295 (rsion 1.00B w)1.221 F(as)-.11 E 1.577(released via an internet ne)72 391.2 R
296 1.577(wsgroup \(comp.compilers\) posting in February of 1990 and quickly)-.275
297 F -.055(ga)72 407.2 S .356(thered a lar).055 F .356(ge follo)-.198 F 3.106
298 (wing. 1.00B)-.275 F .356(generated only LL\(1\) parsers, b)3.106 F .356
299 (ut allo)-.22 F .356(wed the mer)-.275 F .356(ged descrip-)-.198 F 1.859
300 (tion of le)72 423.2 R 1.859(xical and syntactic analysis.)-.165 F 1.86
301 (It had rudimentary attrib)7.359 F 1.86(ute handling similar to that of)-.22 F
302 -.55 -1.32(YA C)72 439.2 T 3.549(Ca)1.32 G .799
303 (nd did not incorporate rule parameters or return v)109.231 439.2 R .798
304 (alues; do)-.275 F(wnw)-.275 E .798(ard inheritance w)-.11 F .798(as v)-.11 F
305 (ery)-.165 E -.165(aw)72 455.2 S(kw).165 E 6.433(ard. 1.00B-generated)-.11 F
306 3.684(parsers terminated upon the \214rst syntax error)6.433 F 9.184(.L)-.605 G
307 -.165(ex)440.916 455.2 S 3.684(ical classes).165 F(\(modes\) were not allo)72
308 471.2 Q(wed and DLG did not ha)-.275 E .33 -.165(ve a)-.22 H 2.75(ni).165 G
309 (nteracti)305.959 471.2 Q .33 -.165(ve m)-.275 H(ode.).165 E .831
310 (Upon starting his Ph.D. at Purdue in the F)97 490.8 R .83(all of 1990, T)-.165
311 F .83(erence P)-.77 F .83(arr be)-.165 F -.055(ga)-.165 G 3.58(nt).055 G .83
312 (he second total)436.351 490.8 R(re)72 506.8 Q 1.646(write of ANTLR.)-.275 F
313 1.646(The method by which grammars may be practically analyzed to generate)
314 7.146 F/F4 11/Times-Italic@0 SF(LL)72.638 522.8 Q F1(\().583 E F4(k).396 E F1
315 3.849(\)l).737 G 1.099(ookahead information w)105.703 522.8 R 1.099(as disco)
316 -.11 F -.165(ve)-.165 G 1.099(red in August of 1990 just before his return.)
317 .165 F -1.221(Ve)6.598 G(rsion)1.221 E .626
318 (1.00 incorporated this algorithm and included the AST mechanism, le)72 538.8 R
319 .626(xical classes, error classes,)-.165 F .354(and automatic error reco)72
320 554.8 R -.165(ve)-.165 G .353(ry; code quality and portability were higher).165
321 F 5.853(.I)-.605 G 3.103(nF)395.965 554.8 S .353(ebruary of 1992 1.00)410.684
322 554.8 R -.11(wa)72 570.8 S 2.76(sr).11 G .01
323 (eleased via an article in SIGPLAN Notices.)95.418 570.8 R .01
324 (Peter Dahl, Ph.D. candidate, and Professor Matt)5.51 F(O'K)72 586.8 Q 2.074
325 (eefe \(both at the Uni)-.275 F -.165(ve)-.275 G 2.073
326 (rsity of Minnesota\) tested this v).165 F 2.073(ersion e)-.165 F(xtensi)-.165
327 E -.165(ve)-.275 G(ly).165 E 7.573(.D)-.715 G 2.073(ana Hogg)448.522 586.8 R
328 (att)-.055 E .078(\(Micro Data Base Systems, Inc.\) came up with the idea of e\
329 rror grouping \(strings attached to non-)72 602.8 R
330 (terminals\) and tested 1.00 hea)72 618.8 Q(vily)-.22 E(.)-.715 E -1.221(Ve)97
331 638.4 S .878(rsion 1.06 w)1.221 F .877
332 (as released in December 1992 and represented a lar)-.11 F .877
333 (ge feature enhancement)-.198 F -.165(ove)72 654.4 S 3.648(r1).165 G 3.648
334 (.00. F)100.365 654.4 R .898(or e)-.165 F .899
335 (xample, rudimentary semantic predicates were introduced, error messages were)
336 -.165 F 2.281(signi\214cantly impro)72 670.4 R -.165(ve)-.165 G 5.031(df).165 G
337 (or)181.953 670.4 Q F4(k)5.427 E F1 2.281
338 (>1 lookahead and ANTLR parsers could indicate that lookahead).737 F 1.381
339 (fetches were to occur only when necessary for the parse \(normally)72 686.4 R
340 4.131(,t)-.715 G 1.381(he lookahead `)387.051 686.4 R(`pipe')-.814 E 4.132('w)
341 -.814 G(as)494.837 686.4 Q 1.182(constantly full\).)72 702.4 R 1.182
342 (Russell Quong joined the project in the Spring of 1992 to aid in the semantic)
343 6.682 F .681(predicate design.)72 718.4 R(Be)6.181 E .681(ginning and adv)-.165
344 F .682(anced tutorials were created and released as well.)-.275 F 3.432(Am)
345 6.182 G(ak)485.179 718.4 Q(e-)-.11 E .993(\214le generator w)72 734.4 R .993
346 (as included that sets up dependencies and such correctly for ANTLR and DLG.)
352 /F0 11/Times-Roman@0 SF 2.75(-2-)278.837 52 S -1.221(Ve)72 88 S 1.414(ry fe)
353 1.221 F 4.164(w1)-.275 G 1.414(.00 incompatibilities were introduced \(1.00 w)
354 122.81 88 R 1.415(as quite dif)-.11 F 1.415(ferent from 1.00B in some)-.275 F
355 (areas\).)72 104 Q 1.089(1.10 w)97 123.6 R 1.088
356 (as released on August 31, 1993 and incorporated b)-.11 F 1.088(ug \214x)-.22 F
357 1.088(es, a fe)-.165 F 3.838(wf)-.275 G 1.088(eature enhance-)433.59 123.6 R
358 3.112(ments and a major ne)72 139.6 R 5.863(wc)-.275 G(apability \212)196.957
359 139.6 Q 3.113(an arbitrary lookahead operator \(syntactic predicate\),)5.863 F
360 /F1 11/Courier@0 SF(\(alpha\)?beta)72 155.6 Q F0 6.754(.T)C 1.254
361 (his feature w)167.425 155.6 R 1.254
362 (as co-designed with Professor Russell Quong also at Purdue.)-.11 F 3.297 -.88
363 (To s)72 171.6 T 1.537
364 (upport in\214nite lookahead, a preprocessor \215ag, ZZINF_LOOK, w).88 F 1.537
365 (as created that forced the)-.11 F .21(ANTLR\(\) macro to tok)72 187.6 R .21
366 (enize all input prior to parsing.)-.11 F .209(Hence, at an)5.709 F 2.959(ym)
367 -.165 G .209(oment, an action or predi-)389.215 187.6 R .936
368 (cate can see the entire input sentence.)72 203.6 R .936
369 (The predicate mechanism of 1.06 w)6.436 F .937(as e)-.11 F .937
370 (xtended to allo)-.165 F(w)-.275 E .55
371 (multiple predicates to be hoisted; the syntactic conte)72 219.6 R .55
372 (xt of a predicate w)-.165 F .55(as also mo)-.11 F -.165(ve)-.165 G 3.299(da)
373 .165 G .549(long with)461.585 219.6 R(the predicate.)72 235.6 Q .754
374 (In February of 1994, SORCERER \(a simple tree-parser generator\) w)97 255.2 R
375 .755(as released.)-.11 F .755(This tool)6.255 F(allo)72 271.2 Q .6(ws the user\
376 to parse child-sibling trees by specifying a grammar rather than b)-.275 F
377 .599(uilding a recur)-.22 F(-)-.22 E(si)72 287.2 Q -.165(ve)-.275 G 1.39
378 (-descent tree w).165 F(alk)-.11 E 1.391(er by hand.)-.11 F -.88(Wo)6.891 G
379 1.391(rk to).88 F -.11(wa)-.275 G 1.391
380 (rds a library of tree transformations is underw).11 F(ay)-.11 E(.)-.715 E .581
381 (Aaron Sa)72 303.2 R(wde)-.165 E 3.331(ya)-.165 G 3.331(tT)145.531 303.2 S .581
382 (he Uni)158.641 303.2 R -.165(ve)-.275 G .58
383 (rsity of Minnesota became a second author of SORCERER after the).165 F
384 (initial release.)72 319.2 Q .627(On April 1, 1994, PCCTS 1.20 w)97 338.8 R
385 .627(as released.)-.11 F .627(This w)6.127 F .627(as the \214rst v)-.11 F .627
386 (ersion to acti)-.165 F -.165(ve)-.275 G .627(ly support).165 F 1.664
387 (C++ output.)72 354.8 R 1.664(It also included important \214x)7.164 F 1.663
388 (es re)-.165 F -.055(ga)-.165 G 1.663
389 (rding semantic predicates and \(..\)+ subrules.).055 F(This v)72 370.8 Q
390 (ersion also introduced tok)-.165 E(en classes, the `)-.11 E(`)-.814 E/F2 11
391 /Times-Italic@0 SF(not)A F0 1.628 -.814('' o)D(perator).814 E 2.75(,a)-.44 G
392 (nd tok)355.294 370.8 Q(en ranges.)-.11 E .764
393 (On June 19, 1994, SORCERER 1.00B9 w)97 390.4 R .765(as released.)-.11 F .765
394 (Gary Funck of Intrepid T)6.265 F(echnology)-.77 E .807
395 (joined the SORCERER team and pro)72 406.4 R .807(vided v)-.165 F .807(ery v)
396 -.165 F .807(aluable suggestions re)-.275 F -.055(ga)-.165 G .806(rding the `)
397 .055 F(`transform')-.814 E(')-.814 E(mode of SORCERER.)72 422.4 Q 1.137
398 (On August 8, 1994, PCCTS 1.21 w)97 442 R 1.137(as released.)-.11 F 1.138
399 (It mainly cleaned up the C++ output and)6.637 F(included a number of b)72 458
400 Q(ug \214x)-.22 E(es.)-.165 E .316(From the 1.21 release forw)97 477.6 R .316
401 (ard, the maintenance and support of all PCCTS tools will be pri-)-.11 F 1.557
402 (marily pro)72 493.6 R 1.557(vided by P)-.165 F 1.557
403 (arr Research Corporation, Minneapolis MN---an or)-.165 F -.055(ga)-.198 G
404 1.558(nization founded on).055 F 1.616(the principles of e)72 509.6 R 1.616
405 (xcellence in research and inte)-.165 F 1.616(grity in b)-.165 F 1.616
406 (usiness; we are de)-.22 F -.22(vo)-.275 G 1.616(ted to pro).22 F(viding)-.165
407 E 1.202(really cool softw)72 525.6 R 1.202(are tools.)-.11 F 1.202
408 (Please see \214le PCCTS.FUTURE for more information.)6.702 F 1.203(All PCCTS)
409 6.703 F(tools currently in the public domain will continue to be in the public\
410 domain.)72 541.6 Q 1.198(Looking to)97 561.2 R -.11(wa)-.275 G 1.198
411 (rds the future, a graphical user).11 F(-interf)-.22 E 1.197
412 (ace is in the design phase.)-.11 F 1.197(This w)6.697 F(ould)-.11 E(allo)72
413 577.2 Q 2.753(wu)-.275 G .003(sers to vie)104.42 577.2 R 2.753(wt)-.275 G .004
414 (he syntax diagram representation of their grammars and w)162.509 577.2 R .004
415 (ould highlight non-)-.11 F 1.181(deterministic productions.)72 593.2 R -.165
416 (Pa)6.681 G 1.18(rsing can be traced graphically as well.).165 F 1.18
417 (This system will be b)6.68 F(uilt)-.22 E .167(using a multiplatform windo)72
418 609.2 R 2.917(wl)-.275 G(ibrary)211.73 609.2 Q 5.667(.W)-.715 G 2.917(ea)
419 255.204 609.2 S .168(lso anticipate the introduction of a sophisticated error)
420 267.889 609.2 R(handling mechanism called `)72 625.2 Q(`parser e)-.814 E
421 (xception handling')-.165 E 2.75('i)-.814 G 2.75(nan)327.431 625.2 S
422 (ear future release.)348.815 625.2 Q(Currently)97 644.8 Q 3.019(,P)-.715 G .269
423 (CCTS is used at o)150.333 644.8 R -.165(ve)-.165 G 3.019(r1).165 G .269
424 (000 kno)253.098 644.8 R .268(wn academic, go)-.275 F -.165(ve)-.165 G .268
425 (rnment, and commercial sites).165 F .859(in 37 countries.)72 660.8 R .859
426 (Of course, the true number of users is unkno)6.359 F .859(wn due to the lar)
427 -.275 F .859(ge number of ftp)-.198 F(sites.)72 676.8 Q EP
432 /F0 11/Times-Roman@0 SF 2.75(-3-)278.837 52 S(Credits)272.11 88 Q .44 LW
433 472.162 103.75 103.838 103.75 DL(Idea/T)134.236 117 Q 52.987(ool Coder)-.88 F
434 (Co-designer\(s\))345.436 117 Q 281.334 103.75 281.334 124.75 DL 209.273 103.75
435 209.273 124.75 DL 209.273 124.75 103.838 124.75 DL 103.838 126.75 209.273
436 126.75 DL 281.334 124.75 209.273 124.75 DL 209.273 126.75 281.334 126.75 DL
437 472.162 124.75 281.334 124.75 DL 281.334 126.75 472.162 126.75 DL(ANTLR 1.00A)
438 109.338 140 Q -.77(Te)217.523 140 S(rence P).77 E 13.75(arr Hank)-.165 F(Dietz)
439 2.75 E 82.83(ALX T)109.338 156 R(erence P)-.77 E 13.75(arr Hank)-.165 F(Dietz)
440 2.75 E(ANTLR 1.00B)109.338 172 Q -.77(Te)217.523 172 S(rence P).77 E 13.75
441 (arr Hank)-.165 F(Dietz, W)2.75 E(ill Cohen)-.44 E(DLG 1.00B)109.338 188 Q -.44
442 (Wi)217.523 188 S(ll Cohen).44 E -.77(Te)289.584 188 S(rence P).77 E(arr)-.165
443 E 2.75(,H)-.44 G(ank Dietz)358.147 188 Q(NF)109.338 204 Q 2.75(AR)-.814 G
444 30.778(elabelling W)140.611 204 R(ill Cohen)-.44 E/F1 11/Times-Italic@0 SF(LL)
445 109.976 220 Q F0(\().583 E F1(k).396 E F0 2.75(\)a).737 G 40.447(nalysis T)
446 143.768 220 R(erence P)-.77 E 13.75(arr Hank)-.165 F(Dietz)2.75 E(ANTLR 1.00)
447 109.338 236 Q -.77(Te)217.523 236 S(rence P).77 E 13.75(arr Hank)-.165 F
448 (Dietz, W)2.75 E(ill Cohen)-.44 E(DLG 1.00)109.338 252 Q -.44(Wi)217.523 252 S
449 (ll Cohen).44 E -.77(Te)289.584 252 S(rence P).77 E(arr)-.165 E 2.75(,H)-.44 G
450 (ank Dietz)358.147 252 Q(ANTLR 1.06)109.338 268 Q -.77(Te)217.523 268 S
451 (rence P).77 E 13.75(arr W)-.165 F(ill Cohen, Russell Quong, Hank Dietz)-.44 E
452 (DLG 1.06)109.338 284 Q -.44(Wi)217.523 284 S(ll Cohen).44 E -.77(Te)289.584
453 284 S(rence P).77 E(arr)-.165 E 2.75(,H)-.44 G(ank Dietz)358.147 284 Q
454 (ANTLR 1.10)109.338 300 Q -.77(Te)217.523 300 S(rence P).77 E 13.75(arr W)-.165
455 F(ill Cohen, Russell Quong)-.44 E(ANTLR 1.20)109.338 316 Q -.77(Te)217.523 316
456 S(rence P).77 E 13.75(arr W)-.165 F(ill Cohen, Russell Quong)-.44 E(ANTLR 1.21)
457 109.338 332 Q -.77(Te)217.523 332 S(rence P).77 E 13.75(arr Russell)-.165 F
458 (Quong)2.75 E(DLG 1.10)109.338 348 Q -.44(Wi)217.523 348 S(ll Cohen).44 E -.77
459 (Te)289.584 348 S(rence P).77 E(arr)-.165 E(DLG 1.20)109.338 364 Q -.44(Wi)
460 217.523 364 S(ll Cohen).44 E -.77(Te)289.584 364 S(rence P).77 E(arr)-.165 E
461 (DLG 1.21)109.338 380 Q -.77(Te)217.523 380 S(rence P).77 E(arr)-.165 E
462 (Semantic predicates)109.338 396 Q -.77(Te)217.523 396 S(rence P).77 E 13.75
463 (arr Russell)-.165 F(Quonq)2.75 E(Syntactic predicates)109.338 412 Q -.77(Te)
464 217.523 412 S(rence P).77 E 13.75(arr Russell)-.165 F(Quonq)2.75 E
465 (SORCERER 1.00A)109.338 428 Q -.77(Te)217.523 428 S(rence P).77 E(arr)-.165 E
466 (SORCERER 1.00B)109.338 444 Q -.77(Te)217.523 444 S(rence P).77 E 13.75
467 (arr Aaron)-.165 F(Sa)2.75 E(wde)-.165 E(y)-.165 E(SORCERER 1.00B9)109.338 460
468 Q -.77(Te)217.523 460 S(rence P).77 E 13.75(arr Aaron)-.165 F(Sa)2.75 E(wde)
469 -.165 E 1.43 -.715(y, G)-.165 H(ary Funck).715 E 472.162 467.75 103.838 467.75
470 DL 472.162 103.75 472.162 467.75 DL 103.838 103.75 103.838 467.75 DL EP