-
Notifications
You must be signed in to change notification settings - Fork 8
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
- Loading branch information
Showing
2 changed files
with
148 additions
and
15 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,3 +1,65 @@ | ||
| use std::borrow::Cow; | ||
|
|
||
| pub struct FxMap(rustc_hash::FxHashMap<Cow<'static, str>, Cow<'static, str>>); | ||
| pub struct FxMap { | ||
| map: rustc_hash::FxHashMap<Cow<'static, str>, Cow<'static, str>>, | ||
| size: usize, | ||
| } | ||
| impl FxMap { | ||
| pub fn new() -> Self { | ||
| Self { | ||
| map: rustc_hash::FxHashMap::default(), | ||
| size: 2/* "\r\n".len() */ | ||
| } | ||
| } | ||
|
|
||
| pub fn insert( | ||
| &mut self, | ||
| key: impl Into<Cow<'static, str>>, | ||
| value: impl Into<Cow<'static, str>>, | ||
| ) -> &mut Self { | ||
| let (key, value) = (key.into(), value.into()); | ||
| let key_len = key.len(); | ||
|
|
||
| self.size += value.len(); | ||
| if let Some(old) = self.map.insert(key, value) { | ||
| self.size -= old.len(); | ||
| } else { | ||
| self.size += key_len + 2/* ": ".len() */ + 2/* "\r\n".len() */; | ||
| } | ||
| self | ||
| } | ||
|
|
||
| pub fn remove(&mut self, key: impl Into<Cow<'static, str>>) -> &mut Self { | ||
| let key = key.into(); | ||
| if let Some(old) = self.map.remove(&key) { | ||
| self.size -= key.len() + 2/* ": ".len() */ + old.len() + 2/* "\r\n".len() */; | ||
| } | ||
| self | ||
| } | ||
|
|
||
| pub fn write_to(&self, buf: &mut Vec<u8>) { | ||
| macro_rules! push { | ||
| ($buf:ident <- $bytes:expr) => { | ||
| unsafe { | ||
| let (buf_len, bytes_len) = ($buf.len(), $bytes.len()); | ||
| std::ptr::copy_nonoverlapping( | ||
| $bytes.as_ptr(), | ||
| <[u8]>::as_mut_ptr($buf).add(buf_len), | ||
| bytes_len | ||
| ); | ||
| $buf.set_len(buf_len + bytes_len); | ||
| } | ||
| }; | ||
| } | ||
|
|
||
| buf.reserve(self.size); | ||
|
|
||
| for (k, v) in &self.map { | ||
| push!(buf <- k.as_bytes()); | ||
| push!(buf <- b": "); | ||
| push!(buf <- v.as_bytes()); | ||
| push!(buf <- b"\r\n"); | ||
| } | ||
| push!(buf <- b"\r\n") | ||
| } | ||
| } |