1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
|
// Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
use std::cell::RefCell;
use std::rc::Rc;
use std::sync::Arc;
use swc_common::comments::Comment;
use swc_common::comments::Comments;
use swc_common::comments::SingleThreadedComments;
use swc_common::comments::SingleThreadedCommentsMapInner;
use swc_common::BytePos;
/// An implementation of swc's `Comments` that implements `Sync`
/// to support being used in multi-threaded code. This implementation
/// is immutable and should you need mutability you may create a copy
/// by converting it to an swc `SingleThreadedComments`.
#[derive(Clone, Debug)]
pub struct MultiThreadedComments {
leading: Arc<SingleThreadedCommentsMapInner>,
trailing: Arc<SingleThreadedCommentsMapInner>,
}
impl MultiThreadedComments {
pub fn from_single_threaded(comments: SingleThreadedComments) -> Self {
let (leading, trailing) = comments.take_all();
let leading = Arc::new(Rc::try_unwrap(leading).unwrap().into_inner());
let trailing = Arc::new(Rc::try_unwrap(trailing).unwrap().into_inner());
MultiThreadedComments { leading, trailing }
}
pub fn as_single_threaded(&self) -> SingleThreadedComments {
let leading = Rc::new(RefCell::new((*self.leading).to_owned()));
let trailing = Rc::new(RefCell::new((*self.trailing).to_owned()));
SingleThreadedComments::from_leading_and_trailing(leading, trailing)
}
/// Gets a vector of all the comments sorted by position.
pub fn get_vec(&self) -> Vec<Comment> {
let mut comments = self
.leading
.values()
.chain(self.trailing.values())
.flatten()
.cloned()
.collect::<Vec<_>>();
comments.sort_by_key(|comment| comment.span.lo);
comments
}
}
impl Comments for MultiThreadedComments {
fn has_leading(&self, pos: BytePos) -> bool {
self.leading.contains_key(&pos)
}
fn get_leading(&self, pos: BytePos) -> Option<Vec<Comment>> {
self.leading.get(&pos).cloned()
}
fn has_trailing(&self, pos: BytePos) -> bool {
self.trailing.contains_key(&pos)
}
fn get_trailing(&self, pos: BytePos) -> Option<Vec<Comment>> {
self.trailing.get(&pos).cloned()
}
fn add_leading(&self, _pos: BytePos, _cmt: Comment) {
panic_readonly();
}
fn add_leading_comments(&self, _pos: BytePos, _comments: Vec<Comment>) {
panic_readonly();
}
fn move_leading(&self, _from: BytePos, _to: BytePos) {
panic_readonly();
}
fn take_leading(&self, _pos: BytePos) -> Option<Vec<Comment>> {
panic_readonly();
}
fn add_trailing(&self, _pos: BytePos, _cmt: Comment) {
panic_readonly();
}
fn add_trailing_comments(&self, _pos: BytePos, _comments: Vec<Comment>) {
panic_readonly();
}
fn move_trailing(&self, _from: BytePos, _to: BytePos) {
panic_readonly();
}
fn take_trailing(&self, _pos: BytePos) -> Option<Vec<Comment>> {
panic_readonly();
}
fn add_pure_comment(&self, _pos: BytePos) {
panic_readonly();
}
}
fn panic_readonly() -> ! {
panic!("MultiThreadedComments do not support write operations")
}
|
