diff options
Diffstat (limited to 'src/libexpr')
| -rw-r--r-- | src/libexpr/nix.sdf | 105 | ||||
| -rw-r--r-- | src/libexpr/parser.cc | 4 |
2 files changed, 15 insertions, 94 deletions
diff --git a/src/libexpr/nix.sdf b/src/libexpr/nix.sdf index b6bb23ebd..36fbef39c 100644 --- a/src/libexpr/nix.sdf +++ b/src/libexpr/nix.sdf @@ -15,9 +15,9 @@ imports Fix-Exprs Fix-Layout %% Expressions. module Fix-Exprs -imports Fix-Lexicals URI +imports Fix-Lexicals exports - sorts Expr Formal Bind Binds BindSemi ExprList + sorts Expr Formal Bind Binds ExprList context-free syntax Id -> Expr {cons("Var")} @@ -44,10 +44,8 @@ exports "let" "{" Binds "}" -> Expr {cons("LetRec")} "{" Binds "}" -> Expr {cons("Attrs")} - Id "=" Expr -> Bind {cons("Bind")} - {Bind ";"}* -> Binds - Bind ";" -> BindSemi - BindSemi* -> Binds + Bind* -> Binds + Id "=" Expr ";" -> Bind {cons("Bind")} "[" ExprList "]" -> Expr {cons("List")} "" -> ExprList {cons("ExprNil")} @@ -65,8 +63,6 @@ exports Expr "||" Expr -> Expr {cons("OpOr"), right} Expr "->" Expr -> Expr {cons("OpImpl"), right} - Bool -> Expr {cons("Bool")} - context-free priorities Expr "." Id -> Expr @@ -87,7 +83,7 @@ exports module Fix-Lexicals exports - sorts Id Int Str Path PathComp Bool + sorts Id Int Str Path PathComp Uri lexical syntax [a-zA-Z\_][a-zA-Z0-9\_\']* -> Id "rec" -> Id {reject} @@ -95,97 +91,24 @@ exports "if" -> Id {reject} "then" -> Id {reject} "else" -> Id {reject} - "true" -> Id {reject} - "false" -> Id {reject} "assert" -> Id {reject} [0-9]+ -> Int "\"" ~[\n\"]* "\"" -> Str - PathComp ("/" PathComp)+ -> Path + "." ("/" PathComp)+ -> Path + ".." ("/" PathComp)+ -> Path ("/" PathComp)+ -> Path [a-zA-Z0-9\.\_\-\+]+ -> PathComp - "true" -> Bool - "false" -> Bool + [a-zA-Z] [a-zA-Z0-9\+\-\.]* ":" [a-zA-Z0-9\%\/\?\:\@\&\=\+\$\,\-\_\.\!\~\*\']* -> Uri lexical restrictions Id -/- [a-zA-Z0-9\_\'] Int -/- [0-9] Path -/- [a-zA-Z0-9\.\_\-\+\/] - - -%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% -%% URIs (RFC 2396, appendix A). - -module URI -exports - sorts Uri Uhierpart Uopaquepart Uuricnoslash Unetpath Uabspath - Urelpath Urelsegment Uscheme Uauthority Uregname Userver - Uuserinfo Uhostport Uhost Uhostname Udomainlabel Utoplabel - UIPv4address Uport Upath Upathsegments Usegment Uparam - Upchar Uquery Ufragment Uuric Ureserved Uunreserved Umark - Uescaped Uhex Ualphanum Ualpha Ulowalpha Uupalpha Udigit - lexical syntax - Uscheme ":" (Uhierpart | Uopaquepart) -> Uri - - (Unetpath | Uabspath) ("?" Uquery)? -> Uhierpart - Uuricnoslash Uuric* -> Uopaquepart - - Uunreserved | Uescaped | [\;\?\:\@\&\=\+\$\,] -> Uuricnoslash - - "//" Uauthority Uabspath? -> Unetpath - "/" Upathsegments -> Uabspath - "//" Uuric* -> Uabspath {reject} - Urelsegment Uabspath? -> Urelpath - - (Uunreserved | Uescaped | [\;\@\&\=\+\$\,])+ -> Urelsegment - - Ualpha (Ualpha | Udigit | [\+\-\.])* -> Uscheme - - Userver | Uregname -> Uauthority - - (Uunreserved | Uescaped | [\$\,\;\:\@\&\=\+])+ -> Uregname - - ((Uuserinfo "@") Uhostport) -> Userver - (Uunreserved | Uescaped | [\;\:\&\=\+\$\,])* -> Uuserinfo - - Uhost (":" Uport)? -> Uhostport - Uhostname | UIPv4address -> Uhost - (Udomainlabel ".")+ Utoplabel "."? -> Uhostname - Ualphanum | Ualphanum (Ualphanum | "-")* Ualphanum -> Udomainlabel - Ualpha | Ualpha (Ualphanum | "-")* Ualphanum -> Utoplabel - Udigit+ "." Udigit+ "." Udigit+ "." Udigit+ -> UIPv4address - Udigit* -> Uport - - Uabspath | Uopaquepart -> Upath - Usegment ("/" Usegment)* -> Upathsegments - Upchar* (";" Uparam)* -> Usegment - Upchar* -> Uparam - Uunreserved | Uescaped | [\:\@\&\=\+\$\,] -> Upchar - - Uuric* -> Uquery - - Uuric* -> Ufragment - - Ureserved | Uunreserved | Uescaped -> Uuric - [\;\/\?\:\@\&\=\+\$\,] -> Ureserved - Ualphanum | Umark -> Uunreserved - [\-\_\.\!\~\*\'\(\)] -> Umark - - "%" Uhex Uhex -> Uescaped - Udigit | [A-Fa-f] -> Uhex - - Ualpha | Udigit -> Ualphanum - Ulowalpha | Uupalpha -> Ualpha - - [a-z] -> Ulowalpha - [A-Z] -> Uupalpha - [0-9] -> Udigit - - lexical restrictions - Uri -/- [a-zA-Z0-9\-\_\.\!\~\*\'\(\)\/] + Uri -/- [a-zA-Z0-9\%\/\?\:\@\&\=\+\$\,\-\_\.\!\~\*\'] %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% @@ -193,18 +116,16 @@ exports module Fix-Layout exports - sorts HashComment Asterisk Comment EOF + sorts HashComment Asterisk Comment lexical syntax [\ \t\n] -> LAYOUT HashComment -> LAYOUT Comment -> LAYOUT - "#" ~[\n]* ([\n] | EOF) -> HashComment - "//" ~[\n]* ([\n] | EOF) -> HashComment + "#" ~[\n]* -> HashComment "/*" ( ~[\*] | Asterisk )* "*/" -> Comment [\*] -> Asterisk - "" -> EOF lexical restrictions Asterisk -/- [\/] - EOF -/- ~[] + HashComment -/- ~[\n] context-free restrictions - LAYOUT? -/- [\ \t\n] | [\#] + LAYOUT? -/- [\ \t\n] diff --git a/src/libexpr/parser.cc b/src/libexpr/parser.cc index 83b656342..1e0ef0c45 100644 --- a/src/libexpr/parser.cc +++ b/src/libexpr/parser.cc @@ -45,10 +45,10 @@ struct Cleanup : TermFun return ATmake("Int(<int>)", n); } - if (atMatch(m, e) >> "Bool" >> "true") + if (atMatch(m, e) >> "Var" >> "true") return ATmake("Bool(True)"); - if (atMatch(m, e) >> "Bool" >> "false") + if (atMatch(m, e) >> "Var" >> "false") return ATmake("Bool(False)"); if (atMatch(m, e) >> "ExprNil") |