2 files changed, 11 insertions, 8 deletions
diff --git a/src/Script/Expr.hs b/src/Script/Expr.hs
index 09b7c80..e6f945d 100644
--- a/src/Script/Expr.hs
+++ b/src/Script/Expr.hs
@@ -8,6 +8,7 @@ module Script.Expr (
 
     FunctionType, DynamicType,
     ExprType(..), SomeExpr(..),
+    SomePrimType(..),
     TypeVar(..), SomeExprType(..), someExprType, textSomeExprType,
     renameTypeVar, renameVarInType,
 
@@ -293,6 +294,8 @@ instance ExprType DynamicType where
 
 data SomeExpr = forall a. ExprType a => SomeExpr (Expr a)
 
+data SomePrimType = forall a. ExprType a => SomePrimType (Proxy a)
+
 newtype TypeVar = TypeVar Text
     deriving (Eq, Ord)
 
@@ -569,7 +572,7 @@ data Regex = RegexCompiled Text RE.Regex
            | RegexString Text
 
 instance ExprType Regex where
-    textExprType _ = T.pack "regex"
+    textExprType _ = T.pack "Regex"
     textExprValue _ = T.pack "<regex>"
 
     exprExpansionConvFrom = listToMaybe $ catMaybes
diff --git a/src/Script/Expr/Class.hs b/src/Script/Expr/Class.hs
index 5bf8a4b..1a6082a 100644
--- a/src/Script/Expr/Class.hs
+++ b/src/Script/Expr/Class.hs
@@ -57,7 +57,7 @@ instance ExprType () where
     textExprValue () = "()"
 
 instance ExprType Integer where
-    textExprType _ = T.pack "integer"
+    textExprType _ = T.pack "Integer"
     textExprValue x = T.pack (show x)
 
     exprExpansionConvTo = listToMaybe $ catMaybes
@@ -67,7 +67,7 @@ instance ExprType Integer where
     exprEnumerator _ = Just $ ExprEnumerator enumFromTo enumFromThenTo
 
 instance ExprType Scientific where
-    textExprType _ = T.pack "number"
+    textExprType _ = T.pack "Number"
     textExprValue x = T.pack (show x)
 
     exprExpansionConvTo = listToMaybe $ catMaybes
@@ -75,16 +75,16 @@ instance ExprType Scientific where
         ]
 
 instance ExprType Bool where
-    textExprType _ = T.pack "bool"
-    textExprValue True = T.pack "true"
-    textExprValue False = T.pack "false"
+    textExprType _ = T.pack "Bool"
+    textExprValue True = T.pack "True"
+    textExprValue False = T.pack "False"
 
 instance ExprType Text where
-    textExprType _ = T.pack "string"
+    textExprType _ = T.pack "String"
     textExprValue x = T.pack (show x)
 
 instance ExprType Void where
-    textExprType _ = T.pack "void"
+    textExprType _ = T.pack "Void"
     textExprValue _ = T.pack "<void>"
 
 instance ExprType a => ExprType [ a ] where