Do we really need another Algol family context-free brackets and symbols language? I doubt it.
In the aim of making it easier for users to learn and input. How many Linguistic Universals does your language support? On Tue, Jan 1, 2013 at 9:38 PM, Russell Wallace <[email protected]>wrote: > Looks to me like lex/yacc, or equivalent tools in your favorite > programming language, would handle this well? > > On Tue, Jan 1, 2013 at 8:53 PM, Piaget Modeler > <[email protected]>wrote: > >> >> >> Hello all, >> >> I'm attempting to create parse trees for user input to the following >> simple grammar: >> >> >> *term := number | moment | string | symbol | scheme | collection* >> * >> * >> *number := #nnnn.nnn -- where n is a >> digit.* >> * >> * >> *moment := @nnnnnnnnnnnnnnnn -- where n is a digit* >> * >> * >> *string := $[ccccccc] -- where c >> is a character* >> * >> * >> *symbol := cccccccc -- where c >> is a character* >> * >> * >> *slot := ccccccccc ** -- >> where c is a character* >> * >> * >> *scheme := positional | slotted * >> * >> * >> *positional := symbol( term* ) -- where term **is >> zero or more & slot** * >> * >> * >> *slotted := symbol(slot:term* ) -- where slot & >> term pair is one or more.* >> * >> * >> *collection := sequence | concurrence | choice | cycle* >> * >> * >> *sequence := [ term* ] -- where [ ] >> are delimiters* >> * >> * >> *concurrence := ( term* ) -- where ( ) >> are delimiters* >> * >> * >> *choice := { term* } -- where { >> } are delimiters* >> * >> * >> *cycle := < term* > -- where < >> > are delimiters* >> >> >> After an input expression is parsed and a parse tree is generated, I'd >> like to be able to: >> >> (1) query the parse tree against a database >> >> (2) merge the parse tree into the database. >> >> >> Other requirements: The parse itself should be on the order of >> milliseconds. >> >> Your thoughts on approaches or tools is appreciated? >> >> >> ~PM >> >> >> >> >> ------------------------------------------------------------------------------------------------------------------------------------------------ >> *Confidential *- *This message is meant solely for the intended >> recipient. Please do not copy or forward this message without * >> *the consent of the sender. If you have received this message in error, >> please delete the message and notify the sender.* >> *AGI* | Archives <https://www.listbox.com/member/archive/303/=now> >> <https://www.listbox.com/member/archive/rss/303/1658954-f53d1a3f> | >> Modify <https://www.listbox.com/member/?&;> Your Subscription >> <http://www.listbox.com> >> > > *AGI* | Archives <https://www.listbox.com/member/archive/303/=now> > <https://www.listbox.com/member/archive/rss/303/5037279-a88c7a6d> | > Modify<https://www.listbox.com/member/?&;>Your Subscription > <http://www.listbox.com> > ------------------------------------------- AGI Archives: https://www.listbox.com/member/archive/303/=now RSS Feed: https://www.listbox.com/member/archive/rss/303/21088071-f452e424 Modify Your Subscription: https://www.listbox.com/member/?member_id=21088071&id_secret=21088071-58d57657 Powered by Listbox: http://www.listbox.com
