diff options
| author |  Adam Chlipala <adam@chlipala.net> | 2012-05-06 13:07:13 -0400 |
|---|---|---|
| committer | Adam Chlipala <adam@chlipala.net> | 2012-05-06 13:07:13 -0400 |
| commit | 4387731e477e2af050841f916a03f5d8a975a164 (patch) | |
| tree | c05d904bc4318b2c43116218f2844479cc71e3fc /src/urweb.grm | |
| parent | 44d64f9ce5ee0c4f4bce154ec2bd7f93bb26356b (diff) | |
Simplify type of Basis.tag, regarding 'class' attribute; new compatibility parsing of 'class' values given as string literals
Diffstat (limited to 'src/urweb.grm')
| -rw-r--r-- | src/urweb.grm | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/src/urweb.grm b/src/urweb.grm index 0fe9b987..6d175c48 100644 --- a/src/urweb.grm +++ b/src/urweb.grm @@ -246,6 +246,15 @@ fun tnamesOf (e, _) = | EDisjointApp e => tnamesOf e | _ => [] +fun classOut (s, pos) = (EVar ([], String.translate (fn #"-" => "_" | ch => str ch) s, Infer), pos) + +fun parseClass s pos = + case String.tokens Char.isSpace s of + [] => (EVar (["Basis"], "null", Infer), pos) + | class :: classes => + foldl (fn (s, e) => (EApp ((EApp ((EVar (["Basis"], "classes", Infer), pos), e), pos), classOut (s, pos)), pos)) + (classOut (class, pos)) classes + %% %header (functor UrwebLrValsFn(structure Token : TOKEN)) @@ -1521,9 +1530,9 @@ tag : tagHead attrs (let val e = (EVar (["Basis"], "tag", Infer), pos) val eo = case #1 attrs of - NONE => (EVar (["Basis"], "None", Infer), pos) - | SOME e => (EApp ((EVar (["Basis"], "Some", Infer), pos), - e), pos) + NONE => (EVar (["Basis"], "null", Infer), pos) + | SOME (EPrim (Prim.String s), pos) => parseClass s pos + | SOME e => e val e = (EApp (e, eo), pos) val eo = case #2 attrs of NONE => (EVar (["Basis"], "None", Infer), pos) |