* Optimised the SDF grammar.
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Eelco Dolstra
parent
3648d1c732
commit
abd1878b26
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@ -15,9 +15,9 @@ imports Fix-Exprs Fix-Layout
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%% Expressions.
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module Fix-Exprs
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imports Fix-Lexicals URI
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imports Fix-Lexicals
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exports
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sorts Expr Formal Bind Binds BindSemi ExprList
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sorts Expr Formal Bind Binds ExprList
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context-free syntax
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Id -> Expr {cons("Var")}
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@ -44,10 +44,8 @@ exports
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"let" "{" Binds "}" -> Expr {cons("LetRec")}
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"{" Binds "}" -> Expr {cons("Attrs")}
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Id "=" Expr -> Bind {cons("Bind")}
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{Bind ";"}* -> Binds
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Bind ";" -> BindSemi
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BindSemi* -> Binds
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Bind* -> Binds
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Id "=" Expr ";" -> Bind {cons("Bind")}
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"[" ExprList "]" -> Expr {cons("List")}
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"" -> ExprList {cons("ExprNil")}
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@ -65,8 +63,6 @@ exports
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Expr "||" Expr -> Expr {cons("OpOr"), right}
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Expr "->" Expr -> Expr {cons("OpImpl"), right}
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Bool -> Expr {cons("Bool")}
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context-free priorities
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Expr "." Id -> Expr
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@ -87,7 +83,7 @@ exports
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module Fix-Lexicals
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exports
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sorts Id Int Str Path PathComp Bool
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sorts Id Int Str Path PathComp Uri
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lexical syntax
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[a-zA-Z\_][a-zA-Z0-9\_\']* -> Id
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"rec" -> Id {reject}
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@ -95,97 +91,24 @@ exports
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"if" -> Id {reject}
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"then" -> Id {reject}
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"else" -> Id {reject}
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"true" -> Id {reject}
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"false" -> Id {reject}
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"assert" -> Id {reject}
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[0-9]+ -> Int
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"\"" ~[\n\"]* "\"" -> Str
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PathComp ("/" PathComp)+ -> Path
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"." ("/" PathComp)+ -> Path
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".." ("/" PathComp)+ -> Path
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("/" PathComp)+ -> Path
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[a-zA-Z0-9\.\_\-\+]+ -> PathComp
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"true" -> Bool
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"false" -> Bool
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[a-zA-Z] [a-zA-Z0-9\+\-\.]* ":" [a-zA-Z0-9\%\/\?\:\@\&\=\+\$\,\-\_\.\!\~\*\']* -> Uri
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lexical restrictions
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Id -/- [a-zA-Z0-9\_\']
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Int -/- [0-9]
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Path -/- [a-zA-Z0-9\.\_\-\+\/]
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%% URIs (RFC 2396, appendix A).
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module URI
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exports
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sorts Uri Uhierpart Uopaquepart Uuricnoslash Unetpath Uabspath
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Urelpath Urelsegment Uscheme Uauthority Uregname Userver
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Uuserinfo Uhostport Uhost Uhostname Udomainlabel Utoplabel
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UIPv4address Uport Upath Upathsegments Usegment Uparam
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Upchar Uquery Ufragment Uuric Ureserved Uunreserved Umark
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Uescaped Uhex Ualphanum Ualpha Ulowalpha Uupalpha Udigit
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lexical syntax
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Uscheme ":" (Uhierpart | Uopaquepart) -> Uri
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(Unetpath | Uabspath) ("?" Uquery)? -> Uhierpart
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Uuricnoslash Uuric* -> Uopaquepart
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Uunreserved | Uescaped | [\;\?\:\@\&\=\+\$\,] -> Uuricnoslash
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"//" Uauthority Uabspath? -> Unetpath
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"/" Upathsegments -> Uabspath
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"//" Uuric* -> Uabspath {reject}
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Urelsegment Uabspath? -> Urelpath
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(Uunreserved | Uescaped | [\;\@\&\=\+\$\,])+ -> Urelsegment
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Ualpha (Ualpha | Udigit | [\+\-\.])* -> Uscheme
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Userver | Uregname -> Uauthority
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(Uunreserved | Uescaped | [\$\,\;\:\@\&\=\+])+ -> Uregname
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((Uuserinfo "@") Uhostport) -> Userver
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(Uunreserved | Uescaped | [\;\:\&\=\+\$\,])* -> Uuserinfo
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Uhost (":" Uport)? -> Uhostport
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Uhostname | UIPv4address -> Uhost
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(Udomainlabel ".")+ Utoplabel "."? -> Uhostname
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Ualphanum | Ualphanum (Ualphanum | "-")* Ualphanum -> Udomainlabel
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Ualpha | Ualpha (Ualphanum | "-")* Ualphanum -> Utoplabel
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Udigit+ "." Udigit+ "." Udigit+ "." Udigit+ -> UIPv4address
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Udigit* -> Uport
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Uabspath | Uopaquepart -> Upath
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Usegment ("/" Usegment)* -> Upathsegments
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Upchar* (";" Uparam)* -> Usegment
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Upchar* -> Uparam
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Uunreserved | Uescaped | [\:\@\&\=\+\$\,] -> Upchar
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Uuric* -> Uquery
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Uuric* -> Ufragment
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Ureserved | Uunreserved | Uescaped -> Uuric
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[\;\/\?\:\@\&\=\+\$\,] -> Ureserved
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Ualphanum | Umark -> Uunreserved
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[\-\_\.\!\~\*\'\(\)] -> Umark
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"%" Uhex Uhex -> Uescaped
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Udigit | [A-Fa-f] -> Uhex
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Ualpha | Udigit -> Ualphanum
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Ulowalpha | Uupalpha -> Ualpha
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[a-z] -> Ulowalpha
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[A-Z] -> Uupalpha
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[0-9] -> Udigit
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lexical restrictions
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Uri -/- [a-zA-Z0-9\-\_\.\!\~\*\'\(\)\/]
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Uri -/- [a-zA-Z0-9\%\/\?\:\@\&\=\+\$\,\-\_\.\!\~\*\']
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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@ -193,18 +116,16 @@ exports
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module Fix-Layout
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exports
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sorts HashComment Asterisk Comment EOF
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sorts HashComment Asterisk Comment
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lexical syntax
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[\ \t\n] -> LAYOUT
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HashComment -> LAYOUT
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Comment -> LAYOUT
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"#" ~[\n]* ([\n] | EOF) -> HashComment
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"//" ~[\n]* ([\n] | EOF) -> HashComment
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"#" ~[\n]* -> HashComment
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"/*" ( ~[\*] | Asterisk )* "*/" -> Comment
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[\*] -> Asterisk
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"" -> EOF
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lexical restrictions
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Asterisk -/- [\/]
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EOF -/- ~[]
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HashComment -/- ~[\n]
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context-free restrictions
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LAYOUT? -/- [\ \t\n] | [\#]
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LAYOUT? -/- [\ \t\n]
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@ -45,10 +45,10 @@ struct Cleanup : TermFun
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return ATmake("Int(<int>)", n);
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}
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if (atMatch(m, e) >> "Bool" >> "true")
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if (atMatch(m, e) >> "Var" >> "true")
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return ATmake("Bool(True)");
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if (atMatch(m, e) >> "Bool" >> "false")
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if (atMatch(m, e) >> "Var" >> "false")
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return ATmake("Bool(False)");
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if (atMatch(m, e) >> "ExprNil")
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