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
|
//! base_db defines basic database traits. The concrete DB is defined by ide.
#![warn(rust_2018_idioms, unused_lifetimes, semicolon_in_expressions_from_macros)]
mod input;
mod change;
pub mod fixture;
use std::{panic, sync::Arc};
use stdx::hash::NoHashHashSet;
use syntax::{ast, Parse, SourceFile, TextRange, TextSize};
pub use crate::{
change::Change,
input::{
CrateData, CrateDisplayName, CrateGraph, CrateId, CrateName, CrateOrigin, Dependency,
Edition, Env, LangCrateOrigin, ProcMacro, ProcMacroExpander, ProcMacroExpansionError,
ProcMacroId, ProcMacroKind, ProcMacroLoadResult, SourceRoot, SourceRootId,
TargetLayoutLoadResult,
},
};
pub use salsa::{self, Cancelled};
pub use vfs::{file_set::FileSet, AnchoredPath, AnchoredPathBuf, FileId, VfsPath};
#[macro_export]
macro_rules! impl_intern_key {
($name:ident) => {
impl $crate::salsa::InternKey for $name {
fn from_intern_id(v: $crate::salsa::InternId) -> Self {
$name(v)
}
fn as_intern_id(&self) -> $crate::salsa::InternId {
self.0
}
}
};
}
pub trait Upcast<T: ?Sized> {
fn upcast(&self) -> &T;
}
#[derive(Clone, Copy, Debug)]
pub struct FilePosition {
pub file_id: FileId,
pub offset: TextSize,
}
#[derive(Clone, Copy, Debug, Eq, PartialEq, Hash)]
pub struct FileRange {
pub file_id: FileId,
pub range: TextRange,
}
pub const DEFAULT_LRU_CAP: usize = 128;
pub trait FileLoader {
/// Text of the file.
fn file_text(&self, file_id: FileId) -> Arc<String>;
fn resolve_path(&self, path: AnchoredPath<'_>) -> Option<FileId>;
fn relevant_crates(&self, file_id: FileId) -> Arc<NoHashHashSet<CrateId>>;
}
/// Database which stores all significant input facts: source code and project
/// model. Everything else in rust-analyzer is derived from these queries.
#[salsa::query_group(SourceDatabaseStorage)]
pub trait SourceDatabase: FileLoader + std::fmt::Debug {
// Parses the file into the syntax tree.
#[salsa::invoke(parse_query)]
fn parse(&self, file_id: FileId) -> Parse<ast::SourceFile>;
/// The crate graph.
#[salsa::input]
fn crate_graph(&self) -> Arc<CrateGraph>;
}
fn parse_query(db: &dyn SourceDatabase, file_id: FileId) -> Parse<ast::SourceFile> {
let _p = profile::span("parse_query").detail(|| format!("{file_id:?}"));
let text = db.file_text(file_id);
SourceFile::parse(&text)
}
/// We don't want to give HIR knowledge of source roots, hence we extract these
/// methods into a separate DB.
#[salsa::query_group(SourceDatabaseExtStorage)]
pub trait SourceDatabaseExt: SourceDatabase {
#[salsa::input]
fn file_text(&self, file_id: FileId) -> Arc<String>;
/// Path to a file, relative to the root of its source root.
/// Source root of the file.
#[salsa::input]
fn file_source_root(&self, file_id: FileId) -> SourceRootId;
/// Contents of the source root.
#[salsa::input]
fn source_root(&self, id: SourceRootId) -> Arc<SourceRoot>;
fn source_root_crates(&self, id: SourceRootId) -> Arc<NoHashHashSet<CrateId>>;
}
fn source_root_crates(db: &dyn SourceDatabaseExt, id: SourceRootId) -> Arc<NoHashHashSet<CrateId>> {
let graph = db.crate_graph();
let res = graph
.iter()
.filter(|&krate| {
let root_file = graph[krate].root_file_id;
db.file_source_root(root_file) == id
})
.collect();
Arc::new(res)
}
/// Silly workaround for cyclic deps between the traits
pub struct FileLoaderDelegate<T>(pub T);
impl<T: SourceDatabaseExt> FileLoader for FileLoaderDelegate<&'_ T> {
fn file_text(&self, file_id: FileId) -> Arc<String> {
SourceDatabaseExt::file_text(self.0, file_id)
}
fn resolve_path(&self, path: AnchoredPath<'_>) -> Option<FileId> {
// FIXME: this *somehow* should be platform agnostic...
let source_root = self.0.file_source_root(path.anchor);
let source_root = self.0.source_root(source_root);
source_root.resolve_path(path)
}
fn relevant_crates(&self, file_id: FileId) -> Arc<NoHashHashSet<CrateId>> {
let _p = profile::span("relevant_crates");
let source_root = self.0.file_source_root(file_id);
self.0.source_root_crates(source_root)
}
}
|
