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
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
use super::{ASTNode, ParseError, Span, TSXToken, TokenReader};
use crate::ParseSettings;
use std::{borrow::Cow, mem};
use tokenizer_lib::Token;
#[derive(Debug, Clone, Eq)]
pub enum WithComment<T> {
None(T),
PrefixComment(String, T),
PostfixComment(T, String),
}
#[cfg(feature = "self-rust-tokenize")]
impl<T> self_rust_tokenize::SelfRustTokenize for WithComment<T>
where
T: self_rust_tokenize::SelfRustTokenize,
{
fn append_to_token_stream(
&self,
token_stream: &mut self_rust_tokenize::proc_macro2::TokenStream,
) {
match self {
WithComment::None(item)
| WithComment::PrefixComment(_, item)
| WithComment::PostfixComment(item, _) => {
let inner = self_rust_tokenize::SelfRustTokenize::to_tokens(item);
token_stream.extend(self_rust_tokenize::quote!(WithComment::None(#inner)))
}
}
}
}
impl<T: PartialEq> PartialEq for WithComment<T> {
fn eq(&self, other: &Self) -> bool {
self.get_ast() == other.get_ast()
}
}
impl<T> From<T> for WithComment<T> {
fn from(item: T) -> Self {
Self::None(item)
}
}
impl<T> WithComment<T> {
pub fn get_ast(&self) -> &T {
match self {
Self::None(ast) => ast,
Self::PrefixComment(_, ast) => ast,
Self::PostfixComment(ast, _) => ast,
}
}
pub fn get_ast_mut(&mut self) -> &mut T {
match self {
Self::None(ast) => ast,
Self::PrefixComment(_, ast) => ast,
Self::PostfixComment(ast, _) => ast,
}
}
pub fn add_comment(&mut self, comment: &str) {
match self {
Self::None(t) => {
let t = mem::replace(t, unsafe { mem::zeroed() });
*self = Self::PrefixComment(comment.to_owned(), t);
}
Self::PrefixComment(prev_comment, _) | Self::PostfixComment(_, prev_comment) => {
prev_comment.push_str(comment)
}
}
}
pub fn unwrap_ast(self) -> T {
match self {
Self::None(ast) | Self::PrefixComment(_, ast) | Self::PostfixComment(ast, _) => ast,
}
}
pub fn as_ref_mut(&mut self) -> WithComment<&mut T> {
match self {
WithComment::None(t) => WithComment::None(t),
WithComment::PrefixComment(_, _) => todo!(),
WithComment::PostfixComment(_, _) => todo!(),
}
}
pub fn map<U>(self, cb: impl FnOnce(T) -> U) -> WithComment<U> {
match self {
Self::None(item) => WithComment::None(cb(item)),
Self::PrefixComment(_, _) => todo!(),
Self::PostfixComment(_, _) => todo!(),
}
}
}
impl<T: ASTNode> ASTNode for WithComment<T> {
fn from_reader(
reader: &mut impl TokenReader<TSXToken, Span>,
state: &mut crate::ParsingState,
settings: &ParseSettings,
) -> Result<WithComment<T>, ParseError> {
if matches!(reader.peek(), Some(Token(TSXToken::MultiLineComment(..), _))) {
let comment = if let TSXToken::MultiLineComment(comment) = reader.next().unwrap().0 {
comment
} else {
unreachable!();
};
Ok(Self::PrefixComment(comment, T::from_reader(reader, state, settings)?))
} else {
let key = T::from_reader(reader, state, settings)?;
if matches!(reader.peek(), Some(Token(TSXToken::MultiLineComment(..), _))) {
let comment = if let TSXToken::MultiLineComment(comment) = reader.next().unwrap().0
{
comment
} else {
unreachable!();
};
Ok(Self::PostfixComment(key, comment))
} else {
Ok(Self::None(key))
}
}
}
fn get_position(&self) -> Cow<Span> {
match self {
Self::None(ast) => ast.get_position(),
Self::PrefixComment(_, ast) => ast.get_position(),
Self::PostfixComment(ast, _) => ast.get_position(),
}
}
fn to_string_from_buffer<U: source_map::ToString>(
&self,
buf: &mut U,
settings: &crate::ToStringSettingsAndData,
depth: u8,
) {
match self {
Self::None(ast) => ast.to_string_from_buffer(buf, settings, depth),
Self::PrefixComment(comment, ast) => {
if settings.0.should_add_comment() {
buf.push_str("/*");
buf.push_str_contains_new_line(comment.as_str());
buf.push_str("*/ ");
}
ast.to_string_from_buffer(buf, settings, depth);
}
Self::PostfixComment(ast, comment) => {
ast.to_string_from_buffer(buf, settings, depth);
if settings.0.should_add_comment() {
buf.push_str(" /*");
buf.push_str_contains_new_line(comment.as_str());
buf.push_str("*/");
}
}
}
}
}