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Avoid allocating temporary Strings in Display implementations

This commit is contained in:
lilydjwg 2020-01-18 13:49:20 +08:00
parent c443136bdc
commit 67fe54119b
1 changed files with 5 additions and 5 deletions
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10
src/cursor.rs
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@ -50,7 +50,7 @@ impl Default for Goto {
impl fmt::Display for Goto { impl fmt::Display for Goto {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
debug_assert!(self != &Goto(0, 0), "Goto is one-based."); debug_assert!(self != &Goto(0, 0), "Goto is one-based.");
f.write_str(&String::from(*self)) write!(f, "\x1B[{};{}H", self.1, self.0)
} }
} }
@ -67,7 +67,7 @@ impl From<Left> for String {
impl fmt::Display for Left { impl fmt::Display for Left {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
f.write_str(&String::from(*self)) write!(f, "\x1B[{}D", self.0)
} }
} }
@ -84,7 +84,7 @@ impl From<Right> for String {
impl fmt::Display for Right { impl fmt::Display for Right {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
f.write_str(&String::from(*self)) write!(f, "\x1B[{}C", self.0)
} }
} }
@ -101,7 +101,7 @@ impl From<Up> for String {
impl fmt::Display for Up { impl fmt::Display for Up {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
f.write_str(&String::from(*self)) write!(f, "\x1B[{}A", self.0)
} }
} }
@ -118,7 +118,7 @@ impl From<Down> for String {
impl fmt::Display for Down { impl fmt::Display for Down {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
f.write_str(&String::from(*self)) write!(f, "\x1B[{}B", self.0)
} }
} }