65 lines
1.7 KiB
Rust
65 lines
1.7 KiB
Rust
//! ra_db defines basic database traits. The concrete DB is defined by ra_ide_api.
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mod cancellation;
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mod syntax_ptr;
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mod input;
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mod loc2id;
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pub mod mock;
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use std::panic;
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use ra_syntax::{TextUnit, TextRange, SourceFile, TreePtr};
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pub use crate::{
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cancellation::{Canceled, Cancelable},
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syntax_ptr::LocalSyntaxPtr,
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input::{
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FilesDatabase, FileId, CrateId, SourceRoot, SourceRootId, CrateGraph, Dependency,
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FileTextQuery, FileSourceRootQuery, SourceRootQuery, LocalRootsQuery, LibraryRootsQuery, CrateGraphQuery,
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FileRelativePathQuery
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},
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loc2id::LocationIntener,
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};
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pub trait BaseDatabase: salsa::Database + panic::RefUnwindSafe {
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fn check_canceled(&self) -> Cancelable<()> {
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self.salsa_runtime()
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.unwind_if_current_revision_is_canceled();
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Ok(())
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}
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fn catch_canceled<F: FnOnce(&Self) -> T + panic::UnwindSafe, T>(
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&self,
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f: F,
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) -> Result<T, Canceled> {
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panic::catch_unwind(|| f(self)).map_err(|err| match err.downcast::<salsa::Canceled>() {
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Ok(_) => Canceled::new(),
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Err(payload) => panic::resume_unwind(payload),
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})
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}
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}
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salsa::query_group! {
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pub trait SyntaxDatabase: crate::input::FilesDatabase + BaseDatabase {
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fn source_file(file_id: FileId) -> TreePtr<SourceFile> {
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type SourceFileQuery;
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}
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}
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}
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fn source_file(db: &impl SyntaxDatabase, file_id: FileId) -> TreePtr<SourceFile> {
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let text = db.file_text(file_id);
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SourceFile::parse(&*text)
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}
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#[derive(Clone, Copy, Debug)]
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pub struct FilePosition {
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pub file_id: FileId,
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pub offset: TextUnit,
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}
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#[derive(Clone, Copy, Debug)]
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pub struct FileRange {
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pub file_id: FileId,
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pub range: TextRange,
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}
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