1 files changed, 7 insertions, 4 deletions
diff --git a/src/parser/pair_ext_parse.rs b/src/parser/pair_ext_parse.rs
index 2ce642a..c7d2d45 100644
--- a/src/parser/pair_ext_parse.rs
+++ b/src/parser/pair_ext_parse.rs
@@ -1,5 +1,6 @@
 use std::str::FromStr;
 
+use pest::Span;
 use pest::iterators::Pair;
 use pest::error::{Error,ErrorVariant};
 
@@ -10,9 +11,11 @@ pub trait PairExt<R> where R: pest::RuleType {
 
 impl<'l, R> PairExt<R> for Pair<'l, R> where R: pest::RuleType {
     fn parse<T, E>(&self) -> Result<T, Error<R>> where T: FromStr<Err = E>, E: ToString {
-        self.as_str().parse().map_err(|e: T::Err| {
-            let var: ErrorVariant<R> = ErrorVariant::CustomError { message: e.to_string() };
-            Error::new_from_span(var, self.as_span())
-        })
+        self.as_str().parse().map_err(|e| to_parse_error(self.as_span(), &e))
     }
 }
+
+pub(crate) fn to_parse_error<E, R>(span: Span, e: &E) -> Error<R> where E: ToString, R: pest::RuleType {
+    let var: ErrorVariant<R> = ErrorVariant::CustomError { message: e.to_string() };
+    Error::new_from_span(var, span)
+}