1 files changed, 18 insertions, 0 deletions
diff --git a/src/parser/pair_ext_parse.rs b/src/parser/pair_ext_parse.rs
new file mode 100644
index 0000000..2ce642a
--- /dev/null
+++ b/src/parser/pair_ext_parse.rs
@@ -0,0 +1,18 @@
+use std::str::FromStr;
+
+use pest::iterators::Pair;
+use pest::error::{Error,ErrorVariant};
+
+
+pub trait PairExt<R> where R: pest::RuleType {
+    fn parse<T, E>(&self) -> Result<T, Error<R>> where T: FromStr<Err = E>, E: ToString;
+}
+
+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())
+        })
+    }
+}