Implemented extern functions

src/types/ByName.go

@@ -31,6 +31,8 @@ func ByName(name string, pkg string, structs map[string]*Struct) Type {
 	switch name {
 	case "Any":
 		return Any
+	case "Bool":
+		return Bool
 	case "Int":
 		return Int
 	case "Int64":
@@ -47,6 +49,8 @@ func ByName(name string, pkg string, structs map[string]*Struct) Type {
 		return Float64
 	case "Float32":
 		return Float32
+	case "UInt":
+		return UInt
 	}
 
 	typ, exists := structs[pkg+"."+name]

src/types/Common.go

@@ -13,6 +13,8 @@ var (
 )
 
 var (
+	Bool  = Int
 	Int   = Int64
 	Float = Float64
+	UInt  = Int
 )