c4b3db0c2f
This commit adds a function that tries to determine the syntax highlighting class of NAME_REFs based on the usage. It is used for highlighting injections (such as highlighting of doctests) as the semantic logic will most of the time result in unresolved references. It also adds a color to unresolved references in HTML encoding.
600 lines
19 KiB
Rust
600 lines
19 KiB
Rust
//! ra_ide crate provides "ide-centric" APIs for the rust-analyzer. That is,
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//! it generally operates with files and text ranges, and returns results as
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//! Strings, suitable for displaying to the human.
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//!
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//! What powers this API are the `RootDatabase` struct, which defines a `salsa`
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//! database, and the `ra_hir` crate, where majority of the analysis happens.
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//! However, IDE specific bits of the analysis (most notably completion) happen
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//! in this crate.
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// For proving that RootDatabase is RefUnwindSafe.
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#![recursion_limit = "128"]
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#[allow(unused)]
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macro_rules! eprintln {
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($($tt:tt)*) => { stdx::eprintln!($($tt)*) };
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}
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pub mod mock_analysis;
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mod prime_caches;
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mod status;
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mod completion;
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mod runnables;
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mod goto_definition;
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mod goto_type_definition;
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mod goto_implementation;
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mod extend_selection;
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mod hover;
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mod call_hierarchy;
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mod call_info;
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mod syntax_highlighting;
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mod parent_module;
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mod references;
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mod diagnostics;
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mod syntax_tree;
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mod folding_ranges;
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mod join_lines;
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mod typing;
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mod matching_brace;
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mod display;
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mod inlay_hints;
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mod expand_macro;
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mod ssr;
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use std::sync::Arc;
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use ra_cfg::CfgOptions;
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use ra_db::{
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salsa::{self, ParallelDatabase},
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CheckCanceled, Env, FileLoader, SourceDatabase,
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};
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use ra_ide_db::{
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symbol_index::{self, FileSymbol},
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LineIndexDatabase,
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};
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use ra_syntax::{SourceFile, TextRange, TextSize};
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use crate::display::ToNav;
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pub use crate::{
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call_hierarchy::CallItem,
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completion::{
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CompletionConfig, CompletionItem, CompletionItemKind, CompletionScore, InsertTextFormat,
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},
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diagnostics::Severity,
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display::{file_structure, FunctionSignature, NavigationTarget, StructureNode},
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expand_macro::ExpandedMacro,
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folding_ranges::{Fold, FoldKind},
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hover::{HoverAction, HoverConfig, HoverResult},
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inlay_hints::{InlayHint, InlayHintsConfig, InlayKind},
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references::{Declaration, Reference, ReferenceAccess, ReferenceKind, ReferenceSearchResult},
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runnables::{Runnable, RunnableKind, TestId},
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ssr::SsrError,
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syntax_highlighting::{
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Highlight, HighlightModifier, HighlightModifiers, HighlightTag, HighlightedRange,
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},
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};
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pub use hir::Documentation;
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pub use ra_assists::{Assist, AssistConfig, AssistId, ResolvedAssist};
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pub use ra_db::{
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Canceled, CrateGraph, CrateId, Edition, FileId, FilePosition, FileRange, SourceRootId,
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};
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pub use ra_ide_db::{
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change::{AnalysisChange, LibraryData},
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line_index::{LineCol, LineIndex},
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search::SearchScope,
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source_change::{FileSystemEdit, SourceChange, SourceFileEdit},
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symbol_index::Query,
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RootDatabase,
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};
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pub use ra_text_edit::{Indel, TextEdit};
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pub type Cancelable<T> = Result<T, Canceled>;
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#[derive(Debug)]
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pub struct Diagnostic {
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pub message: String,
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pub range: TextRange,
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pub severity: Severity,
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pub fix: Option<Fix>,
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}
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#[derive(Debug)]
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pub struct Fix {
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pub label: String,
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pub source_change: SourceChange,
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}
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impl Fix {
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pub fn new(label: impl Into<String>, source_change: SourceChange) -> Self {
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let label = label.into();
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assert!(label.starts_with(char::is_uppercase) && !label.ends_with('.'));
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Self { label, source_change }
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}
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}
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/// Info associated with a text range.
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#[derive(Debug)]
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pub struct RangeInfo<T> {
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pub range: TextRange,
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pub info: T,
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}
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impl<T> RangeInfo<T> {
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pub fn new(range: TextRange, info: T) -> RangeInfo<T> {
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RangeInfo { range, info }
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}
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}
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/// Contains information about a call site. Specifically the
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/// `FunctionSignature`and current parameter.
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#[derive(Debug)]
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pub struct CallInfo {
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pub signature: FunctionSignature,
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pub active_parameter: Option<usize>,
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}
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/// `AnalysisHost` stores the current state of the world.
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#[derive(Debug)]
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pub struct AnalysisHost {
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db: RootDatabase,
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}
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impl AnalysisHost {
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pub fn new(lru_capacity: Option<usize>) -> AnalysisHost {
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AnalysisHost { db: RootDatabase::new(lru_capacity) }
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}
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pub fn update_lru_capacity(&mut self, lru_capacity: Option<usize>) {
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self.db.update_lru_capacity(lru_capacity);
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}
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/// Returns a snapshot of the current state, which you can query for
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/// semantic information.
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pub fn analysis(&self) -> Analysis {
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Analysis { db: self.db.snapshot() }
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}
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/// Applies changes to the current state of the world. If there are
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/// outstanding snapshots, they will be canceled.
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pub fn apply_change(&mut self, change: AnalysisChange) {
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self.db.apply_change(change)
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}
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pub fn maybe_collect_garbage(&mut self) {
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self.db.maybe_collect_garbage();
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}
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pub fn collect_garbage(&mut self) {
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self.db.collect_garbage();
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}
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/// NB: this clears the database
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pub fn per_query_memory_usage(&mut self) -> Vec<(String, ra_prof::Bytes)> {
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self.db.per_query_memory_usage()
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}
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pub fn request_cancellation(&mut self) {
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self.db.request_cancellation();
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}
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pub fn raw_database(&self) -> &RootDatabase {
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&self.db
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}
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pub fn raw_database_mut(&mut self) -> &mut RootDatabase {
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&mut self.db
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}
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}
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impl Default for AnalysisHost {
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fn default() -> AnalysisHost {
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AnalysisHost::new(None)
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}
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}
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/// Analysis is a snapshot of a world state at a moment in time. It is the main
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/// entry point for asking semantic information about the world. When the world
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/// state is advanced using `AnalysisHost::apply_change` method, all existing
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/// `Analysis` are canceled (most method return `Err(Canceled)`).
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#[derive(Debug)]
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pub struct Analysis {
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db: salsa::Snapshot<RootDatabase>,
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}
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// As a general design guideline, `Analysis` API are intended to be independent
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// from the language server protocol. That is, when exposing some functionality
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// we should think in terms of "what API makes most sense" and not in terms of
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// "what types LSP uses". Although currently LSP is the only consumer of the
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// API, the API should in theory be usable as a library, or via a different
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// protocol.
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impl Analysis {
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// Creates an analysis instance for a single file, without any extenal
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// dependencies, stdlib support or ability to apply changes. See
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// `AnalysisHost` for creating a fully-featured analysis.
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pub fn from_single_file(text: String) -> (Analysis, FileId) {
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let mut host = AnalysisHost::default();
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let source_root = SourceRootId(0);
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let mut change = AnalysisChange::new();
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change.add_root(source_root, true);
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let mut crate_graph = CrateGraph::default();
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let file_id = FileId(0);
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// FIXME: cfg options
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// Default to enable test for single file.
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let mut cfg_options = CfgOptions::default();
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cfg_options.insert_atom("test".into());
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crate_graph.add_crate_root(
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file_id,
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Edition::Edition2018,
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None,
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cfg_options,
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Env::default(),
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Default::default(),
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Default::default(),
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);
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change.add_file(source_root, file_id, "main.rs".into(), Arc::new(text));
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change.set_crate_graph(crate_graph);
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host.apply_change(change);
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(host.analysis(), file_id)
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}
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/// Debug info about the current state of the analysis.
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pub fn status(&self) -> Cancelable<String> {
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self.with_db(|db| status::status(&*db))
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}
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pub fn prime_caches(&self, files: Vec<FileId>) -> Cancelable<()> {
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self.with_db(|db| prime_caches::prime_caches(db, files))
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}
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/// Gets the text of the source file.
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pub fn file_text(&self, file_id: FileId) -> Cancelable<Arc<String>> {
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self.with_db(|db| db.file_text(file_id))
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}
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/// Gets the syntax tree of the file.
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pub fn parse(&self, file_id: FileId) -> Cancelable<SourceFile> {
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self.with_db(|db| db.parse(file_id).tree())
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}
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/// Gets the file's `LineIndex`: data structure to convert between absolute
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/// offsets and line/column representation.
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pub fn file_line_index(&self, file_id: FileId) -> Cancelable<Arc<LineIndex>> {
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self.with_db(|db| db.line_index(file_id))
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}
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/// Selects the next syntactic nodes encompassing the range.
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pub fn extend_selection(&self, frange: FileRange) -> Cancelable<TextRange> {
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self.with_db(|db| extend_selection::extend_selection(db, frange))
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}
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/// Returns position of the matching brace (all types of braces are
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/// supported).
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pub fn matching_brace(&self, position: FilePosition) -> Cancelable<Option<TextSize>> {
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self.with_db(|db| {
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let parse = db.parse(position.file_id);
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let file = parse.tree();
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matching_brace::matching_brace(&file, position.offset)
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})
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}
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/// Returns a syntax tree represented as `String`, for debug purposes.
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// FIXME: use a better name here.
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pub fn syntax_tree(
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&self,
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file_id: FileId,
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text_range: Option<TextRange>,
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) -> Cancelable<String> {
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self.with_db(|db| syntax_tree::syntax_tree(&db, file_id, text_range))
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}
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pub fn expand_macro(&self, position: FilePosition) -> Cancelable<Option<ExpandedMacro>> {
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self.with_db(|db| expand_macro::expand_macro(db, position))
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}
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/// Returns an edit to remove all newlines in the range, cleaning up minor
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/// stuff like trailing commas.
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pub fn join_lines(&self, frange: FileRange) -> Cancelable<TextEdit> {
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self.with_db(|db| {
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let parse = db.parse(frange.file_id);
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join_lines::join_lines(&parse.tree(), frange.range)
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})
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}
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/// Returns an edit which should be applied when opening a new line, fixing
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/// up minor stuff like continuing the comment.
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/// The edit will be a snippet (with `$0`).
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pub fn on_enter(&self, position: FilePosition) -> Cancelable<Option<TextEdit>> {
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self.with_db(|db| typing::on_enter(&db, position))
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}
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/// Returns an edit which should be applied after a character was typed.
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///
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/// This is useful for some on-the-fly fixups, like adding `;` to `let =`
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/// automatically.
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pub fn on_char_typed(
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&self,
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position: FilePosition,
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char_typed: char,
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) -> Cancelable<Option<SourceChange>> {
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// Fast path to not even parse the file.
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if !typing::TRIGGER_CHARS.contains(char_typed) {
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return Ok(None);
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}
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self.with_db(|db| typing::on_char_typed(&db, position, char_typed))
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}
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/// Returns a tree representation of symbols in the file. Useful to draw a
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/// file outline.
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pub fn file_structure(&self, file_id: FileId) -> Cancelable<Vec<StructureNode>> {
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self.with_db(|db| file_structure(&db.parse(file_id).tree()))
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}
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/// Returns a list of the places in the file where type hints can be displayed.
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pub fn inlay_hints(
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&self,
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file_id: FileId,
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config: &InlayHintsConfig,
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) -> Cancelable<Vec<InlayHint>> {
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self.with_db(|db| inlay_hints::inlay_hints(db, file_id, config))
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}
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/// Returns the set of folding ranges.
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pub fn folding_ranges(&self, file_id: FileId) -> Cancelable<Vec<Fold>> {
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self.with_db(|db| folding_ranges::folding_ranges(&db.parse(file_id).tree()))
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}
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/// Fuzzy searches for a symbol.
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pub fn symbol_search(&self, query: Query) -> Cancelable<Vec<NavigationTarget>> {
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self.with_db(|db| {
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symbol_index::world_symbols(db, query)
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.into_iter()
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.map(|s| s.to_nav(db))
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.collect::<Vec<_>>()
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})
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}
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/// Returns the definitions from the symbol at `position`.
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pub fn goto_definition(
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&self,
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position: FilePosition,
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) -> Cancelable<Option<RangeInfo<Vec<NavigationTarget>>>> {
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self.with_db(|db| goto_definition::goto_definition(db, position))
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}
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/// Returns the impls from the symbol at `position`.
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pub fn goto_implementation(
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&self,
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position: FilePosition,
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) -> Cancelable<Option<RangeInfo<Vec<NavigationTarget>>>> {
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self.with_db(|db| goto_implementation::goto_implementation(db, position))
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}
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/// Returns the type definitions for the symbol at `position`.
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pub fn goto_type_definition(
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&self,
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position: FilePosition,
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) -> Cancelable<Option<RangeInfo<Vec<NavigationTarget>>>> {
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self.with_db(|db| goto_type_definition::goto_type_definition(db, position))
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}
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/// Finds all usages of the reference at point.
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pub fn find_all_refs(
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&self,
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position: FilePosition,
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search_scope: Option<SearchScope>,
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) -> Cancelable<Option<ReferenceSearchResult>> {
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self.with_db(|db| references::find_all_refs(db, position, search_scope).map(|it| it.info))
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}
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/// Returns a short text describing element at position.
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pub fn hover(&self, position: FilePosition) -> Cancelable<Option<RangeInfo<HoverResult>>> {
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self.with_db(|db| hover::hover(db, position))
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}
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/// Computes parameter information for the given call expression.
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pub fn call_info(&self, position: FilePosition) -> Cancelable<Option<CallInfo>> {
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self.with_db(|db| call_info::call_info(db, position))
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}
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/// Computes call hierarchy candidates for the given file position.
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pub fn call_hierarchy(
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&self,
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position: FilePosition,
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) -> Cancelable<Option<RangeInfo<Vec<NavigationTarget>>>> {
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self.with_db(|db| call_hierarchy::call_hierarchy(db, position))
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}
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/// Computes incoming calls for the given file position.
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pub fn incoming_calls(&self, position: FilePosition) -> Cancelable<Option<Vec<CallItem>>> {
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self.with_db(|db| call_hierarchy::incoming_calls(db, position))
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}
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/// Computes incoming calls for the given file position.
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pub fn outgoing_calls(&self, position: FilePosition) -> Cancelable<Option<Vec<CallItem>>> {
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self.with_db(|db| call_hierarchy::outgoing_calls(db, position))
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}
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/// Returns a `mod name;` declaration which created the current module.
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pub fn parent_module(&self, position: FilePosition) -> Cancelable<Vec<NavigationTarget>> {
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self.with_db(|db| parent_module::parent_module(db, position))
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}
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/// Returns crates this file belongs too.
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pub fn crate_for(&self, file_id: FileId) -> Cancelable<Vec<CrateId>> {
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self.with_db(|db| parent_module::crate_for(db, file_id))
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}
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/// Returns the edition of the given crate.
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pub fn crate_edition(&self, crate_id: CrateId) -> Cancelable<Edition> {
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self.with_db(|db| db.crate_graph()[crate_id].edition)
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}
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/// Returns the root file of the given crate.
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pub fn crate_root(&self, crate_id: CrateId) -> Cancelable<FileId> {
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self.with_db(|db| db.crate_graph()[crate_id].root_file_id)
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}
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/// Returns the set of possible targets to run for the current file.
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pub fn runnables(&self, file_id: FileId) -> Cancelable<Vec<Runnable>> {
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self.with_db(|db| runnables::runnables(db, file_id))
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}
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/// Computes syntax highlighting for the given file
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pub fn highlight(&self, file_id: FileId) -> Cancelable<Vec<HighlightedRange>> {
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self.with_db(|db| syntax_highlighting::highlight(db, file_id, None, false))
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}
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/// Computes syntax highlighting for the given file range.
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pub fn highlight_range(&self, frange: FileRange) -> Cancelable<Vec<HighlightedRange>> {
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self.with_db(|db| {
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syntax_highlighting::highlight(db, frange.file_id, Some(frange.range), false)
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})
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}
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/// Computes syntax highlighting for the given file.
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pub fn highlight_as_html(&self, file_id: FileId, rainbow: bool) -> Cancelable<String> {
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self.with_db(|db| syntax_highlighting::highlight_as_html(db, file_id, rainbow))
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}
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/// Computes completions at the given position.
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pub fn completions(
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&self,
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config: &CompletionConfig,
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position: FilePosition,
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) -> Cancelable<Option<Vec<CompletionItem>>> {
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self.with_db(|db| completion::completions(db, config, position).map(Into::into))
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}
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/// Computes resolved assists with source changes for the given position.
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pub fn resolved_assists(
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&self,
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config: &AssistConfig,
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frange: FileRange,
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) -> Cancelable<Vec<ResolvedAssist>> {
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self.with_db(|db| ra_assists::Assist::resolved(db, config, frange))
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}
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/// Computes unresolved assists (aka code actions aka intentions) for the given
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/// position.
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pub fn unresolved_assists(
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&self,
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config: &AssistConfig,
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frange: FileRange,
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) -> Cancelable<Vec<Assist>> {
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self.with_db(|db| Assist::unresolved(db, config, frange))
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}
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/// Computes the set of diagnostics for the given file.
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pub fn diagnostics(&self, file_id: FileId) -> Cancelable<Vec<Diagnostic>> {
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|
self.with_db(|db| diagnostics::diagnostics(db, file_id))
|
|
}
|
|
|
|
/// Returns the edit required to rename reference at the position to the new
|
|
/// name.
|
|
pub fn rename(
|
|
&self,
|
|
position: FilePosition,
|
|
new_name: &str,
|
|
) -> Cancelable<Option<RangeInfo<SourceChange>>> {
|
|
self.with_db(|db| references::rename(db, position, new_name))
|
|
}
|
|
|
|
pub fn structural_search_replace(
|
|
&self,
|
|
query: &str,
|
|
parse_only: bool,
|
|
) -> Cancelable<Result<SourceChange, SsrError>> {
|
|
self.with_db(|db| {
|
|
let edits = ssr::parse_search_replace(query, parse_only, db)?;
|
|
Ok(SourceChange::from(edits))
|
|
})
|
|
}
|
|
|
|
/// Performs an operation on that may be Canceled.
|
|
fn with_db<F: FnOnce(&RootDatabase) -> T + std::panic::UnwindSafe, T>(
|
|
&self,
|
|
f: F,
|
|
) -> Cancelable<T> {
|
|
self.db.catch_canceled(f)
|
|
}
|
|
}
|
|
|
|
#[test]
|
|
fn analysis_is_send() {
|
|
fn is_send<T: Send>() {}
|
|
is_send::<Analysis>();
|
|
}
|
|
|
|
#[cfg(test)]
|
|
mod tests {
|
|
use crate::{display::NavigationTarget, mock_analysis::single_file, Query};
|
|
use ra_syntax::{
|
|
SmolStr,
|
|
SyntaxKind::{FN_DEF, STRUCT_DEF},
|
|
};
|
|
|
|
#[test]
|
|
fn test_world_symbols_with_no_container() {
|
|
let code = r#"
|
|
enum FooInner { }
|
|
"#;
|
|
|
|
let mut symbols = get_symbols_matching(code, "FooInner");
|
|
|
|
let s = symbols.pop().unwrap();
|
|
|
|
assert_eq!(s.name(), "FooInner");
|
|
assert!(s.container_name().is_none());
|
|
}
|
|
|
|
#[test]
|
|
fn test_world_symbols_include_container_name() {
|
|
let code = r#"
|
|
fn foo() {
|
|
enum FooInner { }
|
|
}
|
|
"#;
|
|
|
|
let mut symbols = get_symbols_matching(code, "FooInner");
|
|
|
|
let s = symbols.pop().unwrap();
|
|
|
|
assert_eq!(s.name(), "FooInner");
|
|
assert_eq!(s.container_name(), Some(&SmolStr::new("foo")));
|
|
|
|
let code = r#"
|
|
mod foo {
|
|
struct FooInner;
|
|
}
|
|
"#;
|
|
|
|
let mut symbols = get_symbols_matching(code, "FooInner");
|
|
|
|
let s = symbols.pop().unwrap();
|
|
|
|
assert_eq!(s.name(), "FooInner");
|
|
assert_eq!(s.container_name(), Some(&SmolStr::new("foo")));
|
|
}
|
|
|
|
#[test]
|
|
fn test_world_symbols_are_case_sensitive() {
|
|
let code = r#"
|
|
fn foo() {}
|
|
|
|
struct Foo;
|
|
"#;
|
|
|
|
let symbols = get_symbols_matching(code, "Foo");
|
|
|
|
let fn_match = symbols.iter().find(|s| s.name() == "foo").map(|s| s.kind());
|
|
let struct_match = symbols.iter().find(|s| s.name() == "Foo").map(|s| s.kind());
|
|
|
|
assert_eq!(fn_match, Some(FN_DEF));
|
|
assert_eq!(struct_match, Some(STRUCT_DEF));
|
|
}
|
|
|
|
fn get_symbols_matching(text: &str, query: &str) -> Vec<NavigationTarget> {
|
|
let (analysis, _) = single_file(text);
|
|
analysis.symbol_search(Query::new(query.into())).unwrap()
|
|
}
|
|
}
|