aboutsummaryrefslogtreecommitdiff
path: root/crates/ra_analysis/src/db.rs
blob: 887d687ea939480e984b6757395037d51ecc0b08 (plain)
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
use std::sync::Arc;

use ra_editor::LineIndex;
use ra_syntax::{SourceFileNode, SyntaxNode};
use salsa::{self, Database};

use crate::{
    db,
    descriptors::{
        DescriptorDatabase, FnScopesQuery, FnSyntaxQuery, ModuleTreeQuery,
        SubmodulesQuery, ItemMapQuery, InputModuleItemsQuery,
    },
    symbol_index::SymbolIndex,
    syntax_ptr::SyntaxPtr,
    loc2id::{IdMaps, IdDatabase},
    Cancelable, Canceled, FileId,
};

#[derive(Debug)]
pub(crate) struct RootDatabase {
    runtime: salsa::Runtime<RootDatabase>,
    id_maps: IdMaps,
}

impl salsa::Database for RootDatabase {
    fn salsa_runtime(&self) -> &salsa::Runtime<RootDatabase> {
        &self.runtime
    }
}

impl Default for RootDatabase {
    fn default() -> RootDatabase {
        let mut db = RootDatabase {
            runtime: salsa::Runtime::default(),
            id_maps: IdMaps::default(),
        };
        db.query_mut(crate::input::SourceRootQuery)
            .set(crate::input::WORKSPACE, Default::default());
        db.query_mut(crate::input::CrateGraphQuery)
            .set((), Default::default());
        db.query_mut(crate::input::LibrariesQuery)
            .set((), Default::default());
        db
    }
}

pub(crate) fn check_canceled(db: &impl salsa::Database) -> Cancelable<()> {
    if db.salsa_runtime().is_current_revision_canceled() {
        Err(Canceled)
    } else {
        Ok(())
    }
}

impl salsa::ParallelDatabase for RootDatabase {
    fn snapshot(&self) -> salsa::Snapshot<RootDatabase> {
        salsa::Snapshot::new(RootDatabase {
            runtime: self.runtime.snapshot(self),
            id_maps: self.id_maps.clone(),
        })
    }
}

impl IdDatabase for RootDatabase {
    fn id_maps(&self) -> &IdMaps {
        &self.id_maps
    }
}

salsa::database_storage! {
    pub(crate) struct RootDatabaseStorage for RootDatabase {
        impl crate::input::FilesDatabase {
            fn file_text() for crate::input::FileTextQuery;
            fn file_source_root() for crate::input::FileSourceRootQuery;
            fn source_root() for crate::input::SourceRootQuery;
            fn libraries() for crate::input::LibrariesQuery;
            fn library_symbols() for crate::input::LibrarySymbolsQuery;
            fn crate_graph() for crate::input::CrateGraphQuery;
        }
        impl SyntaxDatabase {
            fn file_syntax() for FileSyntaxQuery;
            fn file_lines() for FileLinesQuery;
            fn file_symbols() for FileSymbolsQuery;
            fn resolve_syntax_ptr() for ResolveSyntaxPtrQuery;
        }
        impl DescriptorDatabase {
            fn module_tree() for ModuleTreeQuery;
            fn fn_scopes() for FnScopesQuery;
            fn _input_module_items() for InputModuleItemsQuery;
            fn _item_map() for ItemMapQuery;
            fn _fn_syntax() for FnSyntaxQuery;
            fn _submodules() for SubmodulesQuery;
        }
    }
}

salsa::query_group! {
    pub(crate) trait SyntaxDatabase: crate::input::FilesDatabase {
        fn file_syntax(file_id: FileId) -> SourceFileNode {
            type FileSyntaxQuery;
        }
        fn file_lines(file_id: FileId) -> Arc<LineIndex> {
            type FileLinesQuery;
        }
        fn file_symbols(file_id: FileId) -> Cancelable<Arc<SymbolIndex>> {
            type FileSymbolsQuery;
        }
        fn resolve_syntax_ptr(ptr: SyntaxPtr) -> SyntaxNode {
            type ResolveSyntaxPtrQuery;
            // Don't retain syntax trees in memory
            storage volatile;
            use fn crate::syntax_ptr::resolve_syntax_ptr;
        }
    }
}

fn file_syntax(db: &impl SyntaxDatabase, file_id: FileId) -> SourceFileNode {
    let text = db.file_text(file_id);
    SourceFileNode::parse(&*text)
}
fn file_lines(db: &impl SyntaxDatabase, file_id: FileId) -> Arc<LineIndex> {
    let text = db.file_text(file_id);
    Arc::new(LineIndex::new(&*text))
}
fn file_symbols(db: &impl SyntaxDatabase, file_id: FileId) -> Cancelable<Arc<SymbolIndex>> {
    db::check_canceled(db)?;
    let syntax = db.file_syntax(file_id);
    Ok(Arc::new(SymbolIndex::for_file(file_id, syntax)))
}