Ukuhlanganisa i-Prolog ukuya phambili [pdf]

Ukuhlangana Okungathandeki: Ukuhlela Okunengqondo Kuhlangabezana Nokusebenza Kwezinga Eliphansi

Imihlaba ye-Prolog ne-Forth imele ifilosofi yokuhlela embili. I-Prolog, ulimi lokuhlela olusezingeni eliphezulu, lakhelwe phezu kokufinyezwa okuhle kobudlelwane obunengqondo, ukufanisa amaphethini, nokuxazulula izinkinga ezidalulayo. Okwesibili, ngokuphambene, kuyisibonelo solimi olubalulekile olusezingeni eliphansi, olusekelwe kusitaki, olwaziswa kakhulu ngobuncane balo, ukulawula okuqondile kwezingxenyekazi zekhompuyutha, kanye nesivinini sokwenza esivuthayo. Umqondo wokuhlanganisa eyokuqala ibe eyakamuva ungase ubonakale uhumushela izinkondlo zibe ikhodi yomhlangano—umsebenzi wezemfundo ongokoqobo ongabazekayo. Nokho, inqubo yokuhlanganisa i-Prolog to Forth iwumsebenzi wobuchwepheshe okhangayo oveza imininingwane ejulile kuzo zombili izilimi futhi inikeza indlela ephoqelelayo yokudala amasistimu wokuhlela asebenza kahle kakhulu, aphathekayo. Emabhizinisini asebenzisa isistimu yokusebenza eyimojula efana ne-Mewayz, ukuthuthukiswa kwezinga elijulile kugcizelela amandla okuhlanganisa amathuluzi akhethekile, asebenza kahle kakhulu ekugelezeni komsebenzi okuhlangene.

I-Deconstructing Prolog: Ukusuka Ekuhlanganiseni kuya Ekusebenzeni Kwesitaki

Inselele eyinhloko yale nqubo yokuhlanganiswa ilele ekuhumusheni imodeli yekhompyutha ye-Prolog ibe ukhonkolo lwe-Forth, imiyalelo yesinyathelo nesinyathelo. Ukubulawa kwe-Prolog kuqhutshwa izindlela ezimbili ezibalulekile: ukuhlanganisa (inqubo yokuqhathanisa amagama anengqondo) kanye nokubuyisela emuva (ukusesha ezinye izixazululo). Umhlanganisi we-Prolog-to-Forth kufanele asuse le miqondo yezinga eliphezulu ibe uchungechunge lwemisebenzi yezinga eliphansi. Ukuhlanganiswa, ngokwesibonelo, kuba ukulandelana kokukhohlisa kwezitaki—amatemu aphushayo, ukuwaqhathanisa, nokuphatha izibopho eziguquguqukayo. Umhlanganisi kufanele enze ikhodi ye-Forth enganqamula izakhiwo zedatha eziyinkimbinkimbi (njengezihlahla ezimelela amagama anengqondo) futhi igcine indawo lapho okuguquguqukayo kungase kuqiniswe futhi kamuva "kungaqiniswa" ngesikhathi sokuhlehla. Lokhu kudinga imodeli yesikhathi sokusebenza esezingeni eliphezulu eyakhelwe phezu kwamagama ayisisekelo ka-Forth.

Ukusebenzisa Ukuhlehla: Inhliziyo Yosesho

Mhlawumbe ingxenye eyinkimbinkimbi kakhulu yokuhlanganisa isebenzisa i-algorithm yosesho lokuhlehla le-Prolog. Ku-Prolog, lapho umgomo wehluleka, injini ihlehla iye endaweni yokugcina oyikhethile bese izama indlela ehlukile. Ukuphindaphinda lokhu ku-Forth, umdidiyeli kufanele enze indlela yokulondoloza nokubuyisela isimo sokubala. Lokhu ngokuvamile kufinyelelwa kusetshenziswa isitaki sedatha ye-Forth futhi, ngokubaluleke kakhulu, isitaki sokubuyisela esihlukile noma indawo yenkumbulo ezinikele yokugcina amaphuzu okukhethwa kukho. Iphuzu lokukhetha liyisifinyezo sesimo somshini—okuhlanganisa ukubophezela okuguquguqukayo, isikhombisi sekhodi samanje, nezinye izigatshana ezisazozanywa. Ikhodi ehlanganisiwe ihlanganisa imiyalelo yokuphusha iphuzu elikhethiwe kusitaki noma nini lapho isilandiso sinezigatshana eziningi ezifanayo. Lapho ihluleka, isistimu yesikhathi sokusebenza iveza iphuzu lokukhethwa kwakamuva kakhulu, ibuyisela isimo, futhi yeqela esigatshaneni esilandelayo esingazanywanga. Lo mdanso omuhle, uma uyinkimbinkimbi, uguqula ukugeleza kokunquma kwe-Forth kube ukusesha okunganqunyelwe kwe-Prolog.

"Compiling a high-level language like Prolog to a low-level target like Forth is not merely a translation of syntax; it is a re-imagining of an abstract machine model using the primitive operations of another. The success of such a venture hinges on designing a efficient runtime system that can faithfully emulate unification and backtracking on a stack-based architecture."

Imithelela Esebenzayo kanye Noxhumano Lwe-Mewayz

Kungani wenze umsebenzi onzima kangaka? Izinzuzo zibalulekile. I-Forth idume ngokuphatheka kwayo kanye nenkumbulo emincane. Uhlelo lwe-Prolog oluhlanganiswe ku-Forth lungasebenza kumasistimu ashumekiwe, ama-microcontrollers, nanoma iyiphi inkundla enotolika we-Forth, okuletha amakhono anamandla okuhlela okunengqondo ezindaweni ezinezisetshenziswa. Ngaphezu kwalokho, isistimu ewumphumela ingashesha kakhulu, njengoba ikhodi ekhiqiziwe ithambile futhi isebenza nge-overhead encane. Le filosofi yokudala amamojula alula, akhelwe inhloso ahambisana kahle ne-Mewayz modular business OS. I-Mewayz iyachuma ngokuhlanganisa izingxenye ezikhethekile ezenza imisebenzi yazo ngendlela esebenza kahle kakhulu.

Cabanga ushumeka injini yemithetho yokwenza izinqumo eziyinkimbinkimbi ngokuqondile ngaphakathi kwemojuli ye-Mewayz. Uma leyo njini iyinhlanganisela ye-Prolog eqondise umshini we-Forth osheshayo, ophathwayo, ingacubungula ingqondo yebhizinisi ngesivinini esikhethekile nokwethembeka, ngaphandle kwe-hardware engaphansi. Izinzuzo ezibalulekile zendlela enjalo zihlanganisa:

• Ukuphatheka Okudlulele: Sebenzisa ingqondo yebhizinisi eyinkimbinkimbi kumadivayisi anhlobonhlobo, ukusuka kumaseva kuye kuma-node ekhompuyutha asemaphethelweni.
• Ukusebenza Okuphezulu: Finyelela ukwenza okusheshayo ngokudlula izendlalelo zokuhumusha okuvamile ekusetshenzisweni okujwayelekile kwe-Prolog.
• Izinyathelo Ezincane: Dala izinhlelo zokusebenza ezinamandla ezinememori encane nezidingo zokulondoloza.
• Ukuhlanganiswa Okujulile: Faka kalula uhlelo lokucabanga njengengxenye yomdabu ngaphakathi kwesistimu enkulu yemojuli.

Isiphetho: Ibhuloho Phakathi Kwama-Paradigms

Ukuhlanganisa i-Prolog to Forth kuwubufakazi bokuvumelana nezimo kwazo zombili izilimi. Kubonisa ukuthi ngisho nama-paradigm ezinhlelo angabonakali kakhulu angasekelwa kumamodeli wokwenza asebenza kahle, asezingeni eliphansi. Nakuba isalokhu iyindawo eyi-niche yokuklama komhlanganisi, izimiso ezihilelekile—ukuphathwa kwenkumbulo okuphumelelayo, ukulandelela isimo sesikhathi sokusebenza, nokuhumusha okuphambene nepharadigm—zibalulekile emhlabeni wonke. Ezinkundla ezifana ne-Mewayz ezikwazisa ukuguquguquka nokusebenza, lolu hlobo lokuhlanganiswa okujulile kobuchwepheshe luyisihluthulelo sokwakha izinhlelo zebhizinisi eziqinile nezivumelana nezimo. Ngokuqonda ukuthi singayihlanganisa kanjani imihlaba eyahlukene yokubala, sivula amathuba amasha okusebenzisa ingqondo ehlakaniphile lapho idingeka khona.