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[lexer] Pass Builders around by reference instead of implicitly Copying

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This commit is contained in:
Eryn Wells 2018-09-06 17:21:30 -07:00
parent 9365e51893
commit 15e275513d
6 changed files with 16 additions and 10 deletions
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16
lexer/src/states/number/prefix.rs
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@ -18,7 +18,7 @@ impl Prefix {
Prefix(b)
}
pub fn with_char(b: Builder, c: char) -> Option<Prefix> {
pub fn with_char(b: &Builder, c: char) -> Option<Prefix> {
if let Some(ex) = Exact::from(c) {
if b.seen_exact() {
return None;
@ -42,10 +42,10 @@ impl Prefix {
impl State for Prefix {
fn lex(&mut self, c: char) -> StateResult {
if c.is_hash() {
StateResult::advance(Box::new(Hash(self.0)))
} else if let Some(st) = Sign::with_char(self.0, c) {
StateResult::advance(Box::new(Hash::new(&self.0)))
} else if let Some(st) = Sign::with_char(&self.0, c) {
StateResult::advance(Box::new(st))
} else if let Some(st) = Digit::with_char(self.0, c) {
} else if let Some(st) = Digit::with_char(&self.0, c) {
StateResult::advance(Box::new(st))
} else {
StateResult::fail(Error::invalid_char(c))
@ -57,9 +57,15 @@ impl State for Prefix {
}
}
impl Hash {
fn new(b: &Builder) -> Hash {
Hash(b.clone())
}
}
impl State for Hash {
fn lex(&mut self, c: char) -> StateResult {
if let Some(st) = Prefix::with_char(self.0, c) {
if let Some(st) = Prefix::with_char(&self.0, c) {
StateResult::advance(Box::new(st))
} else {
StateResult::fail(Error::invalid_char(c))