diff options
| author | Eelco Dolstra <e.dolstra@tudelft.nl> | 2006-09-11 13:05:15 +0000 |
|---|---|---|
| committer | Eelco Dolstra <e.dolstra@tudelft.nl> | 2006-09-11 13:05:15 +0000 |
| commit | 01d169f817649796aad94180beadbf54bb636161 (patch) | |
| tree | c8f5b950bc1171b214d34539b81a10a123d584fe /src/libexpr | |
| parent | feb63da431eae72087fb57d723e62573ee0c4e14 (diff) | |
* Support `++'.
* More follow restrictions on layout.
Diffstat (limited to 'src/libexpr')
| -rw-r--r-- | src/libexpr/nix.sdf | 20 |
1 files changed, 14 insertions, 6 deletions
diff --git a/src/libexpr/nix.sdf b/src/libexpr/nix.sdf index 8546e758d..8623d1d14 100644 --- a/src/libexpr/nix.sdf +++ b/src/libexpr/nix.sdf @@ -18,7 +18,11 @@ exports context-free start-symbols Expr context-free syntax - Id | Int | Str | Uri | Path -> Expr {cons("Var")} + Id -> Expr {cons("Var")} + Int -> Expr {cons("Int")} + Str -> Expr {cons("Str")} + Uri -> Expr {cons("Uri")} + Path -> Expr {cons("Path")} "(" Expr ")" -> Expr {bracket} @@ -41,7 +45,7 @@ exports "inherit" ("(" Expr ")")? Id* ";" -> Bind {cons("Inherit")} "[" ExprList "]" -> Expr {cons("List")} - "" -> ExprList {cons("ExprNil")} + -> ExprList {cons("ExprNil")} Expr ExprList -> ExprList {cons("ExprCons")} Expr "." Id -> Expr {cons("Select")} @@ -60,6 +64,7 @@ exports Expr "~" Expr -> Expr {cons("SubPath"), non-assoc} Expr "?" Id -> Expr {cons("OpHasAttr")} Expr "+" Expr -> Expr {cons("OpPlus"), left} + Expr "++" Expr -> Expr {cons("OpConcat"), right} context-free priorities @@ -68,11 +73,13 @@ exports > Expr Expr -> Expr > Expr "~" Expr -> Expr > Expr "?" Id -> Expr + > Expr "++" Expr -> Expr > Expr "+" Expr -> Expr > "!" Expr -> Expr > Expr "//" Expr -> Expr - > Expr "==" Expr -> Expr - > Expr "!=" Expr -> Expr + > { Expr "==" Expr -> Expr + Expr "!=" Expr -> Expr + } > Expr "&&" Expr -> Expr > Expr "||" Expr -> Expr > Expr "->" Expr -> Expr @@ -99,7 +106,7 @@ exports [a-zA-Z0-9\.\_\-\+]* ("/"[a-zA-Z0-9\.\_\-\+]+)+ -> Path - [a-zA-Z] [a-zA-Z0-9\+\-\.]* ":" [a-zA-Z0-9\%\/\?\:\@\&\=\+\$\,\-\_\.\!\~\*\']* -> Uri + [a-zA-Z] [a-zA-Z0-9\+\-\.]* ":" [a-zA-Z0-9\%\/\?\:\@\&\=\+\$\,\-\_\.\!\~\*\']+ -> Uri lexical restrictions Id -/- [a-zA-Z0-9\_\'] @@ -125,4 +132,5 @@ exports lexical restrictions HashComment -/- ~[\n] context-free restrictions - LAYOUT? -/- [\ \t\n] + LAYOUT? -/- [\ \t\n\#] + LAYOUT? -/- [\/].[\*] |