Hook in the integer parser.

src/parser/parser.rs

@@ -211,13 +211,14 @@ fn path(i: &str) -> IResult<&str, Path> {
     ))(i)
 }
 
-fn postitive_integer_literal(i: &str) -> IResult<&str, RValue> {
+/// Just digits, no signs or decimals
+fn postitive_integer_literal(i: &str) -> IResult<&str, u64> {
     map(
         verify(
             map(digit1, |number_string: &str| number_string.parse::<u64>()),
             |parse_result| parse_result.is_ok(),
         ),
-        |parsed_number| RValue::RVPositiveInteger(parsed_number.unwrap()),
+        |parsed_number| parsed_number.unwrap(),
     )(i)
 }
 
@@ -226,6 +227,7 @@ fn rvalue(i: &str) -> IResult<&str, RValue> {
     alt((
         map(path, RValue::RVPath),
         map(quoted_string, RValue::RVString),
+        map(postitive_integer_literal, RValue::RVPositiveInteger),
     ))(i)
 }