Add first steps of AutoChomp

1 files changed, 8 insertions, 0 deletions

diff --git a/chewed/src/parse.rs b/chewed/src/parse.rs
index 0687ea5..f6bbd66 100644
--- a/chewed/src/parse.rs
+++ b/chewed/src/parse.rs
@@ -1,3 +1,5 @@
+use std::iter::Peekable;
+
 use super::error::{ParseError, TakeError};
 
 pub trait Parser: Iterator<Item = char> {
@@ -37,6 +39,12 @@ pub trait Parser: Iterator<Item = char> {
     }
 }
 
+impl<I: Iterator<Item = char>> Parser for Peekable<I> {
+    fn peek(&mut self) -> Option<char> {
+        Peekable::peek(self).copied()
+    }
+}
+
 pub trait Parse: Sized {
     fn take<P: Parser + ?Sized>(input: &mut P) -> Result<Self, TakeError>;