minor parse optimizations

src/event/mod.rs

@@ -285,7 +285,14 @@ fn param_parse_with<'a, T, P: Fn(&'a str) -> IResult<&'a str, T>>(
 
         let input = &input[has_open as usize..];
 
-        Ok((input.trim_start_matches(' '), value))
+        debug_assert!(
+            input.is_empty() || input.as_bytes()[0] == b' ',
+            "\"{}\" starts with space",
+            input
+        );
+
+        let input = &input[(!input.is_empty() as usize)..];
+        Ok((input, value))
     }
 }
 

src/lib.rs

@@ -138,6 +138,7 @@ pub struct LineSplit<'a> {
 
 impl<'a> LineSplit<'a> {
     pub fn new(input: &'a str) -> Self {
+        let input = &input[2..]; //skip first
         LineSplit {
             input,
             start: 0,
@@ -152,7 +153,7 @@ impl<'a> Iterator for LineSplit<'a> {
     fn next(&mut self) -> Option<Self::Item> {
         match self.iter.next() {
             Some(next) => {
-                let line = &self.input[self.start..next];
+                let line = &self.input[self.start..next - 1]; // -1 for the newline we strip
                 self.start = next + 2;
                 Some(line)
             }

src/raw_event.rs

@@ -30,11 +30,13 @@ fn event_parser(input: &str) -> Result<RawEvent> {
 
     let (input, ty) = event_type_parser(&input[1..])?;
 
+    let params = &input[(!input.is_empty() as usize)..];
+
     Ok(RawEvent {
         date,
         subject,
         ty,
-        params: &input[1..],
+        params,
     })
 }