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
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
#![allow(unused)]
use crate::{syntax_pos::Mark, SyntaxContext};
use abi_stable::{
sabi_trait,
std_types::{RBox, RVec},
StableAbi,
};
use anyhow::{Context, Error};
use serde::{de::DeserializeOwned, Serialize};
use std::any::type_name;
#[repr(transparent)]
#[derive(StableAbi)]
pub struct Runtime {
inner: RuntimeImpl_TO<'static, RBox<()>>,
}
#[cfg(feature = "plugin-mode")]
scoped_tls::scoped_thread_local!(
pub(crate) static RT: RuntimeImpl_TO<'static, RBox<()>>
);
#[sabi_trait]
pub trait RuntimeImpl {
fn emit_diagnostic(&self, db: RVec<u8>);
fn fresh_mark(&self, parent: Mark) -> Mark;
fn parent_mark(&self, mar: Mark) -> Mark;
fn is_mark_builtin(&self, mark: Mark) -> bool;
fn set_mark_is_builtin(&self, mark: Mark, is_builtin: bool);
fn is_mark_descendant_of(&self, mark: Mark, ancestor: Mark) -> bool;
fn least_ancestor_of_marks(&self, a: Mark, b: Mark) -> Mark;
fn apply_mark_to_syntax_context_internal(
&self,
ctxt: SyntaxContext,
mark: Mark,
) -> SyntaxContext;
fn remove_mark_of_syntax_context(&self, ctxt: &mut SyntaxContext) -> Mark;
fn outer_mark_of_syntax_context(&self, ctxt: SyntaxContext) -> Mark;
}
#[cfg(feature = "plugin-mode")]
struct PluginEmitter;
#[cfg(feature = "plugin-mode")]
impl crate::errors::Emitter for PluginEmitter {
fn emit(&mut self, db: &crate::errors::DiagnosticBuilder<'_>) {
let bytes: RVec<_> = serialize_for_plugin(&db.diagnostic).unwrap().into();
RT.with(|rt| rt.emit_diagnostic(bytes))
}
}
#[cfg_attr(docsrs, doc(cfg(feature = "plugin-mode")))]
#[cfg(feature = "plugin-mode")]
pub fn with_runtime<F, Ret>(rt: &Runtime, op: F) -> Ret
where
F: FnOnce() -> Ret,
{
use crate::errors::{Handler, HANDLER};
let handler = Handler::with_emitter(true, false, Box::new(PluginEmitter));
RT.set(&rt.inner, || {
HANDLER.set(&handler, || op())
})
}
pub fn serialize_for_plugin<T>(t: &T) -> Result<Vec<u8>, Error>
where
T: Serialize,
{
bincode::serialize(&t)
.with_context(|| format!("failed to serialize `{}` using bincode", type_name::<T>()))
}
pub fn deserialize_for_plugin<T>(bytes: &[u8]) -> Result<T, Error>
where
T: DeserializeOwned,
{
bincode::deserialize(bytes)
.with_context(|| format!("failed to deserialize `{}` using bincode", type_name::<T>()))
}
#[cfg(feature = "plugin-rt")]
struct PluginRt {
name: String,
}
#[cfg(feature = "plugin-rt")]
impl RuntimeImpl for PluginRt {
fn emit_diagnostic(&self, db: RVec<u8>) {
use crate::errors::{Diagnostic, DiagnosticBuilder, HANDLER};
let diagnostic: Diagnostic =
deserialize_for_plugin(db.as_slice()).expect("plugin send invalid diagnostic");
HANDLER.with(|handler| {
DiagnosticBuilder::new_diagnostic(&handler, diagnostic)
.note(&format!(
"this message is generated by plugin `{}`",
&self.name
))
.emit();
});
}
fn fresh_mark(&self, parent: Mark) -> Mark {
Mark::fresh(parent)
}
fn parent_mark(&self, mark: Mark) -> Mark {
mark.parent()
}
fn is_mark_builtin(&self, mark: Mark) -> bool {
mark.is_builtin()
}
fn set_mark_is_builtin(&self, mark: Mark, is_builtin: bool) {
mark.set_is_builtin(is_builtin)
}
fn is_mark_descendant_of(&self, mark: Mark, ancestor: Mark) -> bool {
mark.is_descendant_of(ancestor)
}
fn least_ancestor_of_marks(&self, a: Mark, b: Mark) -> Mark {
Mark::least_ancestor(a, b)
}
fn apply_mark_to_syntax_context_internal(
&self,
ctxt: SyntaxContext,
mark: Mark,
) -> SyntaxContext {
ctxt.apply_mark(mark)
}
fn remove_mark_of_syntax_context(&self, ctxt: &mut SyntaxContext) -> Mark {
ctxt.remove_mark()
}
fn outer_mark_of_syntax_context(&self, ctxt: SyntaxContext) -> Mark {
ctxt.outer()
}
}
#[cfg_attr(docsrs, doc(cfg(feature = "plugin-rt")))]
#[cfg(feature = "plugin-rt")]
pub fn get_runtime_for_plugin(plugin_name: String) -> Runtime {
use abi_stable::erased_types::TD_Opaque;
let rt = PluginRt { name: plugin_name };
let rt: RuntimeImpl_TO<'_, RBox<_>> = RuntimeImpl_TO::from_value(rt, TD_Opaque);
Runtime { inner: rt }
}