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switch back to lookahead, 175ns vs 184ns

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This commit is contained in:
Erick Tryzelaar
2014-05-23 22:30:53 -07:00
parent 2d1c7b43d7
commit 7180d94196
2 changed files with 68 additions and 91 deletions
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bench_vec.rs
-30
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@@ -133,7 +133,6 @@ mod deserializer {
enum State {
StartState,
SepOrEndState,
//ValueState,
EndState,
}
@@ -141,7 +140,6 @@ mod deserializer {
state: State,
len: uint,
iter: vec::MoveItems<int>,
value: Option<int>
}
impl IntsDeserializer {
@@ -151,7 +149,6 @@ mod deserializer {
state: StartState,
len: values.len(),
iter: values.move_iter(),
value: None,
}
}
}
@@ -167,9 +164,6 @@ mod deserializer {
SepOrEndState => {
match self.iter.next() {
Some(value) => {
//self.state = ValueState;
//self.value = Some(value);
//Some(Ok(Sep))
Some(Ok(Int(value)))
}
None => {
@@ -178,15 +172,6 @@ mod deserializer {
}
}
}
/*
ValueState => {
self.state = SepOrEndState;
match self.value.take() {
Some(value) => Some(Ok(Int(value))),
None => Some(Err(self.end_of_stream_error())),
}
}
*/
EndState => {
None
}
@@ -204,21 +189,6 @@ mod deserializer {
fn syntax_error(&self) -> Error {
SyntaxError
}
#[inline]
fn expect_num<T: NumCast>(&mut self) -> Result<T, Error> {
assert_eq!(self.state, SepOrEndState);
match self.iter.next() {
Some(value) => {
match num::cast(value) {
Some(value) => Ok(value),
None => Err(self.syntax_error()),
}
}
None => Err(self.end_of_stream_error()),
}
}
}
}