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authorPavan Kumar Sunkara <[email protected]>2020-08-13 01:57:26 +0100
committerPavan Kumar Sunkara <[email protected]>2020-08-13 02:18:19 +0100
commit349e6c62ada1fa45a8b80edb877b5e7c9d0c306d (patch)
treec08cb7cd48089c1c7316ff2570de02df76e9d9ef /crates/ra_proc_macro_srv/src/proc_macro/diagnostic.rs
parentf277ec27ac024992e8b8834c68e16b31c983be1b (diff)
Rename ra_proc_macro_srv -> proc_macro_srv
Diffstat (limited to 'crates/ra_proc_macro_srv/src/proc_macro/diagnostic.rs')
-rw-r--r--crates/ra_proc_macro_srv/src/proc_macro/diagnostic.rs172
1 files changed, 0 insertions, 172 deletions
diff --git a/crates/ra_proc_macro_srv/src/proc_macro/diagnostic.rs b/crates/ra_proc_macro_srv/src/proc_macro/diagnostic.rs
deleted file mode 100644
index 55d93917c..000000000
--- a/crates/ra_proc_macro_srv/src/proc_macro/diagnostic.rs
+++ /dev/null
@@ -1,172 +0,0 @@
1//! lib-proc-macro diagnostic
2//!
3//! Copy from https://github.com/rust-lang/rust/blob/6050e523bae6de61de4e060facc43dc512adaccd/src/libproc_macro/diagnostic.rs
4//! augmented with removing unstable features
5
6use crate::proc_macro::Span;
7
8/// An enum representing a diagnostic level.
9#[derive(Copy, Clone, Debug)]
10#[non_exhaustive]
11pub enum Level {
12 /// An error.
13 Error,
14 /// A warning.
15 Warning,
16 /// A note.
17 Note,
18 /// A help message.
19 Help,
20}
21
22/// Trait implemented by types that can be converted into a set of `Span`s.
23pub trait MultiSpan {
24 /// Converts `self` into a `Vec<Span>`.
25 fn into_spans(self) -> Vec<Span>;
26}
27
28impl MultiSpan for Span {
29 fn into_spans(self) -> Vec<Span> {
30 vec![self]
31 }
32}
33
34impl MultiSpan for Vec<Span> {
35 fn into_spans(self) -> Vec<Span> {
36 self
37 }
38}
39
40impl<'a> MultiSpan for &'a [Span] {
41 fn into_spans(self) -> Vec<Span> {
42 self.to_vec()
43 }
44}
45
46/// A structure representing a diagnostic message and associated children
47/// messages.
48#[derive(Clone, Debug)]
49pub struct Diagnostic {
50 level: Level,
51 message: String,
52 spans: Vec<Span>,
53 children: Vec<Diagnostic>,
54}
55
56macro_rules! diagnostic_child_methods {
57 ($spanned:ident, $regular:ident, $level:expr) => {
58 /// Adds a new child diagnostic message to `self` with the level
59 /// identified by this method's name with the given `spans` and
60 /// `message`.
61 pub fn $spanned<S, T>(mut self, spans: S, message: T) -> Diagnostic
62 where
63 S: MultiSpan,
64 T: Into<String>,
65 {
66 self.children.push(Diagnostic::spanned(spans, $level, message));
67 self
68 }
69
70 /// Adds a new child diagnostic message to `self` with the level
71 /// identified by this method's name with the given `message`.
72 pub fn $regular<T: Into<String>>(mut self, message: T) -> Diagnostic {
73 self.children.push(Diagnostic::new($level, message));
74 self
75 }
76 };
77}
78
79/// Iterator over the children diagnostics of a `Diagnostic`.
80#[derive(Debug, Clone)]
81pub struct Children<'a>(std::slice::Iter<'a, Diagnostic>);
82
83impl<'a> Iterator for Children<'a> {
84 type Item = &'a Diagnostic;
85
86 fn next(&mut self) -> Option<Self::Item> {
87 self.0.next()
88 }
89}
90
91impl Diagnostic {
92 /// Creates a new diagnostic with the given `level` and `message`.
93 pub fn new<T: Into<String>>(level: Level, message: T) -> Diagnostic {
94 Diagnostic { level: level, message: message.into(), spans: vec![], children: vec![] }
95 }
96
97 /// Creates a new diagnostic with the given `level` and `message` pointing to
98 /// the given set of `spans`.
99 pub fn spanned<S, T>(spans: S, level: Level, message: T) -> Diagnostic
100 where
101 S: MultiSpan,
102 T: Into<String>,
103 {
104 Diagnostic {
105 level: level,
106 message: message.into(),
107 spans: spans.into_spans(),
108 children: vec![],
109 }
110 }
111
112 diagnostic_child_methods!(span_error, error, Level::Error);
113 diagnostic_child_methods!(span_warning, warning, Level::Warning);
114 diagnostic_child_methods!(span_note, note, Level::Note);
115 diagnostic_child_methods!(span_help, help, Level::Help);
116
117 /// Returns the diagnostic `level` for `self`.
118 pub fn level(&self) -> Level {
119 self.level
120 }
121
122 /// Sets the level in `self` to `level`.
123 pub fn set_level(&mut self, level: Level) {
124 self.level = level;
125 }
126
127 /// Returns the message in `self`.
128 pub fn message(&self) -> &str {
129 &self.message
130 }
131
132 /// Sets the message in `self` to `message`.
133 pub fn set_message<T: Into<String>>(&mut self, message: T) {
134 self.message = message.into();
135 }
136
137 /// Returns the `Span`s in `self`.
138 pub fn spans(&self) -> &[Span] {
139 &self.spans
140 }
141
142 /// Sets the `Span`s in `self` to `spans`.
143 pub fn set_spans<S: MultiSpan>(&mut self, spans: S) {
144 self.spans = spans.into_spans();
145 }
146
147 /// Returns an iterator over the children diagnostics of `self`.
148 pub fn children(&self) -> Children<'_> {
149 Children(self.children.iter())
150 }
151
152 /// Emit the diagnostic.
153 pub fn emit(self) {
154 fn to_internal(spans: Vec<Span>) -> crate::proc_macro::bridge::client::MultiSpan {
155 let mut multi_span = crate::proc_macro::bridge::client::MultiSpan::new();
156 for span in spans {
157 multi_span.push(span.0);
158 }
159 multi_span
160 }
161
162 let mut diag = crate::proc_macro::bridge::client::Diagnostic::new(
163 self.level,
164 &self.message[..],
165 to_internal(self.spans),
166 );
167 for c in self.children {
168 diag.sub(c.level, &c.message[..], to_internal(c.spans));
169 }
170 diag.emit();
171 }
172}