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use crate::{
pos::Spanned,
syntax_pos::{BytePos, Span},
};
use dashmap::{mapref::one::Ref, DashMap};
use fxhash::FxBuildHasher;
pub type CommentMap = DashMap<BytePos, Vec<Comment>, FxBuildHasher>;
#[derive(Debug)]
pub struct Comments {
leading: CommentMap,
trailing: CommentMap,
}
impl Default for Comments {
fn default() -> Self {
fn mk() -> CommentMap {
DashMap::with_hasher(Default::default())
}
Comments {
leading: mk(),
trailing: mk(),
}
}
}
impl Comments {
pub fn add_leading(&self, pos: BytePos, cmt: Vec<Comment>) {
self.leading.entry(pos).or_default().extend(cmt);
}
pub fn add_trailing(&self, pos: BytePos, cmt: Comment) {
self.trailing.entry(pos).or_default().push(cmt);
}
pub fn take_trailing_comments(&self, pos: BytePos) -> Option<Vec<Comment>> {
self.trailing.remove(&pos).map(|v| v.1)
}
pub fn trailing_comments(
&self,
pos: BytePos,
) -> Option<Ref<'_, BytePos, Vec<Comment>, FxBuildHasher>> {
self.trailing.get(&pos)
}
pub fn take_leading_comments(&self, pos: BytePos) -> Option<Vec<Comment>> {
self.leading.remove(&pos).map(|v| v.1)
}
pub fn leading_comments(
&self,
pos: BytePos,
) -> Option<Ref<'_, BytePos, Vec<Comment>, FxBuildHasher>> {
self.leading.get(&pos)
}
pub fn move_leading(&self, from: BytePos, to: BytePos) {
let cmt = self.leading.remove(&from);
if let Some(cmt) = cmt {
self.leading.entry(to).or_default().extend(cmt.1);
}
}
pub fn move_trailing(&self, from: BytePos, to: BytePos) {
let cmt = self.trailing.remove(&from);
if let Some(cmt) = cmt {
self.trailing.entry(to).or_default().extend(cmt.1);
}
}
pub fn take_all(self) -> (CommentMap, CommentMap) {
(self.leading, self.trailing)
}
}
#[derive(Debug, Clone, PartialEq, Eq)]
pub struct Comment {
pub kind: CommentKind,
pub span: Span,
pub text: String,
}
impl Spanned for Comment {
fn span(&self) -> Span {
self.span
}
}
#[derive(Debug, Clone, Copy, PartialEq, Eq)]
pub enum CommentKind {
Line,
Block,
}