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Use lazy_static! to avoid expensive regex compiles in loop

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Dane Johnson 2022-10-12 11:30:08 -05:00
parent 3ab9cedbcd
commit bf84433d5b
3 changed files with 14 additions and 3 deletions
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7
Cargo.lock generated
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@ -224,6 +224,7 @@ name = "hexland-server"
version = "0.1.0" version = "0.1.0"
dependencies = [ dependencies = [
"futures", "futures",
"lazy_static",
"rand", "rand",
"regex", "regex",
"sha2", "sha2",
@ -264,6 +265,12 @@ version = "1.0.3"
source = "registry+https://github.com/rust-lang/crates.io-index" source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "6c8af84674fe1f223a982c933a0ee1086ac4d4052aa0fb8060c12c6ad838e754" checksum = "6c8af84674fe1f223a982c933a0ee1086ac4d4052aa0fb8060c12c6ad838e754"
[[package]]
name = "lazy_static"
version = "1.4.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
[[package]] [[package]]
name = "libc" name = "libc"
version = "0.2.133" version = "0.2.133"

1
Cargo.toml
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@ -12,3 +12,4 @@ regex = "1.6.0"
tokio = { version = "1.21.2", features = ["full"] } tokio = { version = "1.21.2", features = ["full"] }
tokio-tungstenite = "0.17.2" tokio-tungstenite = "0.17.2"
futures = "0.3.24" futures = "0.3.24"
lazy_static = "1.4.0"

7
src/message.rs
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@ -6,6 +6,7 @@ use tokio_tungstenite::{
tungstenite::Message as WsMessage, tungstenite::Message as WsMessage,
}; };
use futures::{StreamExt, SinkExt}; use futures::{StreamExt, SinkExt};
use lazy_static::lazy_static;
#[derive(PartialEq, Debug)] #[derive(PartialEq, Debug)]
pub struct Message { pub struct Message {
@ -25,8 +26,10 @@ pub enum Error {
impl Message { impl Message {
pub fn parse(text: String) -> Result<Message> { pub fn parse(text: String) -> Result<Message> {
let re = regex::Regex::new(r"^([A-Z_]+):\s*(.*)").unwrap(); lazy_static! {
match re.captures(text.as_str()) { static ref RE: regex::Regex = regex::Regex::new(r"^([A-Z_]+):\s*(.*)").unwrap();
}
match RE.captures(text.as_str()) {
Some(captures) => { Some(captures) => {
if captures.len() < 3 { if captures.len() < 3 {
Err(Error::BadParse) Err(Error::BadParse)