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|
//! This module is responsible for implementing handlers for Language Server
//! Protocol. The majority of requests are fulfilled by calling into the
//! `ra_ide` crate.
use std::{
collections::hash_map::Entry,
fmt::Write as _,
io::Write as _,
process::{self, Stdio},
};
use lsp_server::ErrorCode;
use lsp_types::{
CallHierarchyIncomingCall, CallHierarchyIncomingCallsParams, CallHierarchyItem,
CallHierarchyOutgoingCall, CallHierarchyOutgoingCallsParams, CallHierarchyPrepareParams,
CodeAction, CodeActionOrCommand, CodeActionResponse, CodeLens, Command, CompletionItem,
Diagnostic, DocumentFormattingParams, DocumentHighlight, DocumentSymbol, FoldingRange,
FoldingRangeParams, Hover, HoverContents, Location, MarkupContent, MarkupKind, Position,
PrepareRenameResponse, Range, RenameParams, SemanticTokens, SemanticTokensParams,
SemanticTokensRangeParams, SemanticTokensRangeResult, SemanticTokensResult, SymbolInformation,
TextDocumentIdentifier, TextEdit, WorkspaceEdit,
};
use ra_ide::{
AssistId, FileId, FilePosition, FileRange, Query, RangeInfo, Runnable, RunnableKind,
SearchScope,
};
use ra_prof::profile;
use ra_syntax::{AstNode, SyntaxKind, TextRange, TextUnit};
use rustc_hash::FxHashMap;
use serde::{Deserialize, Serialize};
use serde_json::to_value;
use crate::{
cargo_target_spec::CargoTargetSpec,
conv::{
to_call_hierarchy_item, to_location, Conv, ConvWith, FoldConvCtx, MapConvWith, TryConvWith,
TryConvWithToVec,
},
diagnostics::DiagnosticTask,
from_json,
req::{self, Decoration, InlayHint, InlayHintsParams, InlayKind},
semantic_tokens::SemanticTokensBuilder,
world::WorldSnapshot,
LspError, Result,
};
pub fn handle_analyzer_status(world: WorldSnapshot, _: ()) -> Result<String> {
let _p = profile("handle_analyzer_status");
let mut buf = world.status();
writeln!(buf, "\n\nrequests:").unwrap();
let requests = world.latest_requests.read();
for (is_last, r) in requests.iter() {
let mark = if is_last { "*" } else { " " };
writeln!(buf, "{}{:4} {:<36}{}ms", mark, r.id, r.method, r.duration.as_millis()).unwrap();
}
Ok(buf)
}
pub fn handle_syntax_tree(world: WorldSnapshot, params: req::SyntaxTreeParams) -> Result<String> {
let _p = profile("handle_syntax_tree");
let id = params.text_document.try_conv_with(&world)?;
let line_index = world.analysis().file_line_index(id)?;
let text_range = params.range.map(|p| p.conv_with(&line_index));
let res = world.analysis().syntax_tree(id, text_range)?;
Ok(res)
}
pub fn handle_expand_macro(
world: WorldSnapshot,
params: req::ExpandMacroParams,
) -> Result<Option<req::ExpandedMacro>> {
let _p = profile("handle_expand_macro");
let file_id = params.text_document.try_conv_with(&world)?;
let line_index = world.analysis().file_line_index(file_id)?;
let offset = params.position.map(|p| p.conv_with(&line_index));
match offset {
None => Ok(None),
Some(offset) => {
let res = world.analysis().expand_macro(FilePosition { file_id, offset })?;
Ok(res.map(|it| req::ExpandedMacro { name: it.name, expansion: it.expansion }))
}
}
}
pub fn handle_selection_range(
world: WorldSnapshot,
params: req::SelectionRangeParams,
) -> Result<Vec<req::SelectionRange>> {
let _p = profile("handle_selection_range");
let file_id = params.text_document.try_conv_with(&world)?;
let line_index = world.analysis().file_line_index(file_id)?;
params
.positions
.into_iter()
.map_conv_with(&line_index)
.map(|position| {
let mut ranges = Vec::new();
{
let mut range = TextRange::from_to(position, position);
loop {
ranges.push(range);
let frange = FileRange { file_id, range };
let next = world.analysis().extend_selection(frange)?;
if next == range {
break;
} else {
range = next
}
}
}
let mut range = req::SelectionRange {
range: ranges.last().unwrap().conv_with(&line_index),
parent: None,
};
for r in ranges.iter().rev().skip(1) {
range = req::SelectionRange {
range: r.conv_with(&line_index),
parent: Some(Box::new(range)),
}
}
Ok(range)
})
.collect()
}
pub fn handle_find_matching_brace(
world: WorldSnapshot,
params: req::FindMatchingBraceParams,
) -> Result<Vec<Position>> {
let _p = profile("handle_find_matching_brace");
let file_id = params.text_document.try_conv_with(&world)?;
let line_index = world.analysis().file_line_index(file_id)?;
let res = params
.offsets
.into_iter()
.map_conv_with(&line_index)
.map(|offset| {
if let Ok(Some(matching_brace_offset)) =
world.analysis().matching_brace(FilePosition { file_id, offset })
{
matching_brace_offset
} else {
offset
}
})
.map_conv_with(&line_index)
.collect();
Ok(res)
}
pub fn handle_join_lines(
world: WorldSnapshot,
params: req::JoinLinesParams,
) -> Result<req::SourceChange> {
let _p = profile("handle_join_lines");
let frange = (¶ms.text_document, params.range).try_conv_with(&world)?;
world.analysis().join_lines(frange)?.try_conv_with(&world)
}
pub fn handle_on_enter(
world: WorldSnapshot,
params: req::TextDocumentPositionParams,
) -> Result<Option<req::SourceChange>> {
let _p = profile("handle_on_enter");
let position = params.try_conv_with(&world)?;
match world.analysis().on_enter(position)? {
None => Ok(None),
Some(edit) => Ok(Some(edit.try_conv_with(&world)?)),
}
}
// Don't forget to add new trigger characters to `ServerCapabilities` in `caps.rs`.
pub fn handle_on_type_formatting(
world: WorldSnapshot,
params: req::DocumentOnTypeFormattingParams,
) -> Result<Option<Vec<TextEdit>>> {
let _p = profile("handle_on_type_formatting");
let mut position = params.text_document_position.try_conv_with(&world)?;
let line_index = world.analysis().file_line_index(position.file_id)?;
let line_endings = world.file_line_endings(position.file_id);
// in `ra_ide`, the `on_type` invariant is that
// `text.char_at(position) == typed_char`.
position.offset -= TextUnit::of_char('.');
let char_typed = params.ch.chars().next().unwrap_or('\0');
// We have an assist that inserts ` ` after typing `->` in `fn foo() ->{`,
// but it requires precise cursor positioning to work, and one can't
// position the cursor with on_type formatting. So, let's just toggle this
// feature off here, hoping that we'll enable it one day, 😿.
if char_typed == '>' {
return Ok(None);
}
let edit = world.analysis().on_char_typed(position, char_typed)?;
let mut edit = match edit {
Some(it) => it,
None => return Ok(None),
};
// This should be a single-file edit
let edit = edit.source_file_edits.pop().unwrap();
let change: Vec<TextEdit> = edit.edit.conv_with((&line_index, line_endings));
Ok(Some(change))
}
pub fn handle_document_symbol(
world: WorldSnapshot,
params: req::DocumentSymbolParams,
) -> Result<Option<req::DocumentSymbolResponse>> {
let _p = profile("handle_document_symbol");
let file_id = params.text_document.try_conv_with(&world)?;
let line_index = world.analysis().file_line_index(file_id)?;
let mut parents: Vec<(DocumentSymbol, Option<usize>)> = Vec::new();
for symbol in world.analysis().file_structure(file_id)? {
let doc_symbol = DocumentSymbol {
name: symbol.label,
detail: symbol.detail,
kind: symbol.kind.conv(),
deprecated: Some(symbol.deprecated),
range: symbol.node_range.conv_with(&line_index),
selection_range: symbol.navigation_range.conv_with(&line_index),
children: None,
};
parents.push((doc_symbol, symbol.parent));
}
let mut res = Vec::new();
while let Some((node, parent)) = parents.pop() {
match parent {
None => res.push(node),
Some(i) => {
let children = &mut parents[i].0.children;
if children.is_none() {
*children = Some(Vec::new());
}
children.as_mut().unwrap().push(node);
}
}
}
Ok(Some(res.into()))
}
pub fn handle_workspace_symbol(
world: WorldSnapshot,
params: req::WorkspaceSymbolParams,
) -> Result<Option<Vec<SymbolInformation>>> {
let _p = profile("handle_workspace_symbol");
let all_symbols = params.query.contains('#');
let libs = params.query.contains('*');
let query = {
let query: String = params.query.chars().filter(|&c| c != '#' && c != '*').collect();
let mut q = Query::new(query);
if !all_symbols {
q.only_types();
}
if libs {
q.libs();
}
q.limit(128);
q
};
let mut res = exec_query(&world, query)?;
if res.is_empty() && !all_symbols {
let mut query = Query::new(params.query);
query.limit(128);
res = exec_query(&world, query)?;
}
return Ok(Some(res));
fn exec_query(world: &WorldSnapshot, query: Query) -> Result<Vec<SymbolInformation>> {
let mut res = Vec::new();
for nav in world.analysis().symbol_search(query)? {
let info = SymbolInformation {
name: nav.name().to_string(),
kind: nav.kind().conv(),
location: nav.try_conv_with(world)?,
container_name: nav.container_name().map(|v| v.to_string()),
deprecated: None,
};
res.push(info);
}
Ok(res)
}
}
pub fn handle_goto_definition(
world: WorldSnapshot,
params: req::TextDocumentPositionParams,
) -> Result<Option<req::GotoDefinitionResponse>> {
let _p = profile("handle_goto_definition");
let position = params.try_conv_with(&world)?;
let nav_info = match world.analysis().goto_definition(position)? {
None => return Ok(None),
Some(it) => it,
};
let res = (position.file_id, nav_info).try_conv_with(&world)?;
Ok(Some(res))
}
pub fn handle_goto_implementation(
world: WorldSnapshot,
params: req::TextDocumentPositionParams,
) -> Result<Option<req::GotoImplementationResponse>> {
let _p = profile("handle_goto_implementation");
let position = params.try_conv_with(&world)?;
let nav_info = match world.analysis().goto_implementation(position)? {
None => return Ok(None),
Some(it) => it,
};
let res = (position.file_id, nav_info).try_conv_with(&world)?;
Ok(Some(res))
}
pub fn handle_goto_type_definition(
world: WorldSnapshot,
params: req::TextDocumentPositionParams,
) -> Result<Option<req::GotoTypeDefinitionResponse>> {
let _p = profile("handle_goto_type_definition");
let position = params.try_conv_with(&world)?;
let nav_info = match world.analysis().goto_type_definition(position)? {
None => return Ok(None),
Some(it) => it,
};
let res = (position.file_id, nav_info).try_conv_with(&world)?;
Ok(Some(res))
}
pub fn handle_parent_module(
world: WorldSnapshot,
params: req::TextDocumentPositionParams,
) -> Result<Vec<Location>> {
let _p = profile("handle_parent_module");
let position = params.try_conv_with(&world)?;
world.analysis().parent_module(position)?.iter().try_conv_with_to_vec(&world)
}
pub fn handle_runnables(
world: WorldSnapshot,
params: req::RunnablesParams,
) -> Result<Vec<req::Runnable>> {
let _p = profile("handle_runnables");
let file_id = params.text_document.try_conv_with(&world)?;
let line_index = world.analysis().file_line_index(file_id)?;
let offset = params.position.map(|it| it.conv_with(&line_index));
let mut res = Vec::new();
let workspace_root = world.workspace_root_for(file_id);
for runnable in world.analysis().runnables(file_id)? {
if let Some(offset) = offset {
if !runnable.range.contains_inclusive(offset) {
continue;
}
}
res.push(to_lsp_runnable(&world, file_id, runnable)?);
}
let mut check_args = vec!["check".to_string()];
let label;
match CargoTargetSpec::for_file(&world, file_id)? {
Some(spec) => {
label = format!("cargo check -p {}", spec.package);
spec.push_to(&mut check_args);
}
None => {
label = "cargo check --all".to_string();
check_args.push("--all".to_string())
}
}
// Always add `cargo check`.
res.push(req::Runnable {
range: Default::default(),
label,
bin: "cargo".to_string(),
args: check_args,
env: FxHashMap::default(),
cwd: workspace_root.map(|root| root.to_string_lossy().to_string()),
});
Ok(res)
}
pub fn handle_decorations(
world: WorldSnapshot,
params: TextDocumentIdentifier,
) -> Result<Vec<Decoration>> {
let _p = profile("handle_decorations");
let file_id = params.try_conv_with(&world)?;
highlight(&world, file_id)
}
pub fn handle_completion(
world: WorldSnapshot,
params: req::CompletionParams,
) -> Result<Option<req::CompletionResponse>> {
let _p = profile("handle_completion");
let position = params.text_document_position.try_conv_with(&world)?;
let completion_triggered_after_single_colon = {
let mut res = false;
if let Some(ctx) = params.context {
if ctx.trigger_character.unwrap_or_default() == ":" {
let source_file = world.analysis().parse(position.file_id)?;
let syntax = source_file.syntax();
let text = syntax.text();
if let Some(next_char) = text.char_at(position.offset) {
let diff = TextUnit::of_char(next_char) + TextUnit::of_char(':');
let prev_char = position.offset - diff;
if text.char_at(prev_char) != Some(':') {
res = true;
}
}
}
}
res
};
if completion_triggered_after_single_colon {
return Ok(None);
}
let items = match world.analysis().completions(position)? {
None => return Ok(None),
Some(items) => items,
};
let line_index = world.analysis().file_line_index(position.file_id)?;
let line_endings = world.file_line_endings(position.file_id);
let items: Vec<CompletionItem> =
items.into_iter().map(|item| item.conv_with((&line_index, line_endings))).collect();
Ok(Some(items.into()))
}
pub fn handle_folding_range(
world: WorldSnapshot,
params: FoldingRangeParams,
) -> Result<Option<Vec<FoldingRange>>> {
let _p = profile("handle_folding_range");
let file_id = params.text_document.try_conv_with(&world)?;
let folds = world.analysis().folding_ranges(file_id)?;
let text = world.analysis().file_text(file_id)?;
let line_index = world.analysis().file_line_index(file_id)?;
let ctx = FoldConvCtx {
text: &text,
line_index: &line_index,
line_folding_only: world.options.line_folding_only,
};
let res = Some(folds.into_iter().map_conv_with(&ctx).collect());
Ok(res)
}
pub fn handle_signature_help(
world: WorldSnapshot,
params: req::TextDocumentPositionParams,
) -> Result<Option<req::SignatureHelp>> {
let _p = profile("handle_signature_help");
let position = params.try_conv_with(&world)?;
if let Some(call_info) = world.analysis().call_info(position)? {
let active_parameter = call_info.active_parameter.map(|it| it as i64);
let sig_info = call_info.signature.conv();
Ok(Some(req::SignatureHelp {
signatures: vec![sig_info],
active_signature: Some(0),
active_parameter,
}))
} else {
Ok(None)
}
}
pub fn handle_hover(
world: WorldSnapshot,
params: req::TextDocumentPositionParams,
) -> Result<Option<Hover>> {
let _p = profile("handle_hover");
let position = params.try_conv_with(&world)?;
let info = match world.analysis().hover(position)? {
None => return Ok(None),
Some(info) => info,
};
let line_index = world.analysis.file_line_index(position.file_id)?;
let range = info.range.conv_with(&line_index);
let res = Hover {
contents: HoverContents::Markup(MarkupContent {
kind: MarkupKind::Markdown,
value: crate::markdown::format_docs(&info.info.to_markup()),
}),
range: Some(range),
};
Ok(Some(res))
}
pub fn handle_prepare_rename(
world: WorldSnapshot,
params: req::TextDocumentPositionParams,
) -> Result<Option<PrepareRenameResponse>> {
let _p = profile("handle_prepare_rename");
let position = params.try_conv_with(&world)?;
let optional_change = world.analysis().rename(position, "dummy")?;
let range = match optional_change {
None => return Ok(None),
Some(it) => it.range,
};
let file_id = params.text_document.try_conv_with(&world)?;
let line_index = world.analysis().file_line_index(file_id)?;
let range = range.conv_with(&line_index);
Ok(Some(PrepareRenameResponse::Range(range)))
}
pub fn handle_rename(world: WorldSnapshot, params: RenameParams) -> Result<Option<WorkspaceEdit>> {
let _p = profile("handle_rename");
let position = params.text_document_position.try_conv_with(&world)?;
if params.new_name.is_empty() {
return Err(LspError::new(
ErrorCode::InvalidParams as i32,
"New Name cannot be empty".into(),
)
.into());
}
let optional_change = world.analysis().rename(position, &*params.new_name)?;
let change = match optional_change {
None => return Ok(None),
Some(it) => it.info,
};
let source_change_req = change.try_conv_with(&world)?;
Ok(Some(source_change_req.workspace_edit))
}
pub fn handle_references(
world: WorldSnapshot,
params: req::ReferenceParams,
) -> Result<Option<Vec<Location>>> {
let _p = profile("handle_references");
let position = params.text_document_position.try_conv_with(&world)?;
let refs = match world.analysis().find_all_refs(position, None)? {
None => return Ok(None),
Some(refs) => refs,
};
let locations = if params.context.include_declaration {
refs.into_iter()
.filter_map(|reference| {
let line_index =
world.analysis().file_line_index(reference.file_range.file_id).ok()?;
to_location(
reference.file_range.file_id,
reference.file_range.range,
&world,
&line_index,
)
.ok()
})
.collect()
} else {
// Only iterate over the references if include_declaration was false
refs.references()
.iter()
.filter_map(|reference| {
let line_index =
world.analysis().file_line_index(reference.file_range.file_id).ok()?;
to_location(
reference.file_range.file_id,
reference.file_range.range,
&world,
&line_index,
)
.ok()
})
.collect()
};
Ok(Some(locations))
}
pub fn handle_formatting(
world: WorldSnapshot,
params: DocumentFormattingParams,
) -> Result<Option<Vec<TextEdit>>> {
let _p = profile("handle_formatting");
let file_id = params.text_document.try_conv_with(&world)?;
let file = world.analysis().file_text(file_id)?;
let crate_ids = world.analysis().crate_for(file_id)?;
let file_line_index = world.analysis().file_line_index(file_id)?;
let end_position = TextUnit::of_str(&file).conv_with(&file_line_index);
let mut rustfmt = process::Command::new("rustfmt");
rustfmt.args(&world.options.rustfmt_args);
if let Some(&crate_id) = crate_ids.first() {
// Assume all crates are in the same edition
let edition = world.analysis().crate_edition(crate_id)?;
rustfmt.args(&["--edition", &edition.to_string()]);
}
if let Ok(path) = params.text_document.uri.to_file_path() {
if let Some(parent) = path.parent() {
rustfmt.current_dir(parent);
}
}
let mut rustfmt = rustfmt.stdin(Stdio::piped()).stdout(Stdio::piped()).spawn()?;
rustfmt.stdin.as_mut().unwrap().write_all(file.as_bytes())?;
let output = rustfmt.wait_with_output()?;
let captured_stdout = String::from_utf8(output.stdout)?;
if !output.status.success() {
match output.status.code() {
Some(1) => {
// While `rustfmt` doesn't have a specific exit code for parse errors this is the
// likely cause exiting with 1. Most Language Servers swallow parse errors on
// formatting because otherwise an error is surfaced to the user on top of the
// syntax error diagnostics they're already receiving. This is especially jarring
// if they have format on save enabled.
log::info!("rustfmt exited with status 1, assuming parse error and ignoring");
return Ok(None);
}
_ => {
// Something else happened - e.g. `rustfmt` is missing or caught a signal
return Err(LspError::new(
-32900,
format!(
r#"rustfmt exited with:
Status: {}
stdout: {}"#,
output.status, captured_stdout,
),
)
.into());
}
}
}
Ok(Some(vec![TextEdit {
range: Range::new(Position::new(0, 0), end_position),
new_text: captured_stdout,
}]))
}
pub fn handle_code_action(
world: WorldSnapshot,
params: req::CodeActionParams,
) -> Result<Option<CodeActionResponse>> {
let _p = profile("handle_code_action");
let file_id = params.text_document.try_conv_with(&world)?;
let line_index = world.analysis().file_line_index(file_id)?;
let range = params.range.conv_with(&line_index);
let diagnostics = world.analysis().diagnostics(file_id)?;
let mut res = CodeActionResponse::default();
let fixes_from_diagnostics = diagnostics
.into_iter()
.filter_map(|d| Some((d.range, d.fix?)))
.filter(|(diag_range, _fix)| diag_range.intersection(&range).is_some())
.map(|(_range, fix)| fix);
for source_edit in fixes_from_diagnostics {
let title = source_edit.label.clone();
let edit = source_edit.try_conv_with(&world)?;
let command = Command {
title,
command: "rust-analyzer.applySourceChange".to_string(),
arguments: Some(vec![to_value(edit).unwrap()]),
};
let action = CodeAction {
title: command.title.clone(),
kind: None,
diagnostics: None,
edit: None,
command: Some(command),
is_preferred: None,
};
res.push(action.into());
}
for fix in world.check_fixes.get(&file_id).into_iter().flatten() {
let fix_range = fix.range.conv_with(&line_index);
if fix_range.intersection(&range).is_none() {
continue;
}
res.push(fix.action.clone());
}
let mut groups = FxHashMap::default();
for assist in world.analysis().assists(FileRange { file_id, range })?.into_iter() {
let arg = to_value(assist.source_change.try_conv_with(&world)?)?;
let (command, title, arg) = match assist.group_label {
None => ("rust-analyzer.applySourceChange", assist.label.clone(), arg),
// Group all assists with the same `group_label` into a single CodeAction.
Some(group_label) => {
match groups.entry(group_label.clone()) {
Entry::Occupied(entry) => {
let idx: usize = *entry.get();
match &mut res[idx] {
CodeActionOrCommand::CodeAction(CodeAction {
command: Some(Command { arguments: Some(arguments), .. }),
..
}) => match arguments.as_mut_slice() {
[serde_json::Value::Array(arguments)] => arguments.push(arg),
_ => panic!("invalid group"),
},
_ => panic!("invalid group"),
}
continue;
}
Entry::Vacant(entry) => {
entry.insert(res.len());
}
}
("rust-analyzer.selectAndApplySourceChange", group_label, to_value(vec![arg])?)
}
};
let command = Command {
title: assist.label.clone(),
command: command.to_string(),
arguments: Some(vec![arg]),
};
let kind = match assist.id {
AssistId("introduce_variable") => Some("refactor.extract.variable".to_string()),
AssistId("add_custom_impl") => Some("refactor.rewrite.add_custom_impl".to_string()),
_ => None,
};
let action = CodeAction {
title,
kind,
diagnostics: None,
edit: None,
command: Some(command),
is_preferred: None,
};
res.push(action.into());
}
Ok(Some(res))
}
pub fn handle_code_lens(
world: WorldSnapshot,
params: req::CodeLensParams,
) -> Result<Option<Vec<CodeLens>>> {
let _p = profile("handle_code_lens");
let file_id = params.text_document.try_conv_with(&world)?;
let line_index = world.analysis().file_line_index(file_id)?;
let mut lenses: Vec<CodeLens> = Default::default();
// Gather runnables
for runnable in world.analysis().runnables(file_id)? {
let title = match &runnable.kind {
RunnableKind::Test { .. } | RunnableKind::TestMod { .. } => "▶️\u{fe0e}Run Test",
RunnableKind::Bench { .. } => "Run Bench",
RunnableKind::Bin => "Run",
}
.to_string();
let r = to_lsp_runnable(&world, file_id, runnable)?;
let lens = CodeLens {
range: r.range,
command: Some(Command {
title,
command: "rust-analyzer.runSingle".into(),
arguments: Some(vec![to_value(r).unwrap()]),
}),
data: None,
};
lenses.push(lens);
}
// Handle impls
lenses.extend(
world
.analysis()
.file_structure(file_id)?
.into_iter()
.filter(|it| match it.kind {
SyntaxKind::TRAIT_DEF | SyntaxKind::STRUCT_DEF | SyntaxKind::ENUM_DEF => true,
_ => false,
})
.map(|it| {
let range = it.node_range.conv_with(&line_index);
let pos = range.start;
let lens_params =
req::TextDocumentPositionParams::new(params.text_document.clone(), pos);
CodeLens {
range,
command: None,
data: Some(to_value(CodeLensResolveData::Impls(lens_params)).unwrap()),
}
}),
);
Ok(Some(lenses))
}
#[derive(Debug, Serialize, Deserialize)]
#[serde(rename_all = "camelCase")]
enum CodeLensResolveData {
Impls(req::TextDocumentPositionParams),
}
pub fn handle_code_lens_resolve(world: WorldSnapshot, code_lens: CodeLens) -> Result<CodeLens> {
let _p = profile("handle_code_lens_resolve");
let data = code_lens.data.unwrap();
let resolve = from_json::<Option<CodeLensResolveData>>("CodeLensResolveData", data)?;
match resolve {
Some(CodeLensResolveData::Impls(lens_params)) => {
let locations: Vec<Location> =
match handle_goto_implementation(world, lens_params.clone())? {
Some(req::GotoDefinitionResponse::Scalar(loc)) => vec![loc],
Some(req::GotoDefinitionResponse::Array(locs)) => locs,
Some(req::GotoDefinitionResponse::Link(links)) => links
.into_iter()
.map(|link| Location::new(link.target_uri, link.target_selection_range))
.collect(),
_ => vec![],
};
let title = if locations.len() == 1 {
"1 implementation".into()
} else {
format!("{} implementations", locations.len())
};
// We cannot use the 'editor.action.showReferences' command directly
// because that command requires vscode types which we convert in the handler
// on the client side.
let cmd = Command {
title,
command: "rust-analyzer.showReferences".into(),
arguments: Some(vec![
to_value(&lens_params.text_document.uri).unwrap(),
to_value(code_lens.range.start).unwrap(),
to_value(locations).unwrap(),
]),
};
Ok(CodeLens { range: code_lens.range, command: Some(cmd), data: None })
}
None => Ok(CodeLens {
range: code_lens.range,
command: Some(Command { title: "Error".into(), ..Default::default() }),
data: None,
}),
}
}
pub fn handle_document_highlight(
world: WorldSnapshot,
params: req::TextDocumentPositionParams,
) -> Result<Option<Vec<DocumentHighlight>>> {
let _p = profile("handle_document_highlight");
let file_id = params.text_document.try_conv_with(&world)?;
let line_index = world.analysis().file_line_index(file_id)?;
let refs = match world
.analysis()
.find_all_refs(params.try_conv_with(&world)?, Some(SearchScope::single_file(file_id)))?
{
None => return Ok(None),
Some(refs) => refs,
};
Ok(Some(
refs.into_iter()
.filter(|reference| reference.file_range.file_id == file_id)
.map(|reference| DocumentHighlight {
range: reference.file_range.range.conv_with(&line_index),
kind: reference.access.map(|it| it.conv()),
})
.collect(),
))
}
pub fn handle_ssr(world: WorldSnapshot, params: req::SsrParams) -> Result<req::SourceChange> {
let _p = profile("handle_ssr");
world.analysis().structural_search_replace(¶ms.arg)??.try_conv_with(&world)
}
pub fn publish_diagnostics(world: &WorldSnapshot, file_id: FileId) -> Result<DiagnosticTask> {
let _p = profile("publish_diagnostics");
let line_index = world.analysis().file_line_index(file_id)?;
let diagnostics: Vec<Diagnostic> = world
.analysis()
.diagnostics(file_id)?
.into_iter()
.map(|d| Diagnostic {
range: d.range.conv_with(&line_index),
severity: Some(d.severity.conv()),
code: None,
source: Some("rust-analyzer".to_string()),
message: d.message,
related_information: None,
tags: None,
})
.collect();
Ok(DiagnosticTask::SetNative(file_id, diagnostics))
}
pub fn publish_decorations(
world: &WorldSnapshot,
file_id: FileId,
) -> Result<req::PublishDecorationsParams> {
let _p = profile("publish_decorations");
let uri = world.file_id_to_uri(file_id)?;
Ok(req::PublishDecorationsParams { uri, decorations: highlight(&world, file_id)? })
}
fn to_lsp_runnable(
world: &WorldSnapshot,
file_id: FileId,
runnable: Runnable,
) -> Result<req::Runnable> {
let spec = CargoTargetSpec::for_file(world, file_id)?;
let args = CargoTargetSpec::runnable_args(spec, &runnable.kind)?;
let line_index = world.analysis().file_line_index(file_id)?;
let label = match &runnable.kind {
RunnableKind::Test { test_id } => format!("test {}", test_id),
RunnableKind::TestMod { path } => format!("test-mod {}", path),
RunnableKind::Bench { test_id } => format!("bench {}", test_id),
RunnableKind::Bin => "run binary".to_string(),
};
Ok(req::Runnable {
range: runnable.range.conv_with(&line_index),
label,
bin: "cargo".to_string(),
args,
env: {
let mut m = FxHashMap::default();
m.insert("RUST_BACKTRACE".to_string(), "short".to_string());
m
},
cwd: world.workspace_root_for(file_id).map(|root| root.to_string_lossy().to_string()),
})
}
fn highlight(world: &WorldSnapshot, file_id: FileId) -> Result<Vec<Decoration>> {
let line_index = world.analysis().file_line_index(file_id)?;
let res = world
.analysis()
.highlight(file_id)?
.into_iter()
.map(|h| Decoration {
range: h.range.conv_with(&line_index),
tag: h.highlight.to_string(),
binding_hash: h.binding_hash.map(|x| x.to_string()),
})
.collect();
Ok(res)
}
pub fn handle_inlay_hints(
world: WorldSnapshot,
params: InlayHintsParams,
) -> Result<Vec<InlayHint>> {
let _p = profile("handle_inlay_hints");
let file_id = params.text_document.try_conv_with(&world)?;
let analysis = world.analysis();
let line_index = analysis.file_line_index(file_id)?;
Ok(analysis
.inlay_hints(file_id, world.options.max_inlay_hint_length)?
.into_iter()
.map(|api_type| InlayHint {
label: api_type.label.to_string(),
range: api_type.range.conv_with(&line_index),
kind: match api_type.kind {
ra_ide::InlayKind::TypeHint => InlayKind::TypeHint,
ra_ide::InlayKind::ParameterHint => InlayKind::ParameterHint,
},
})
.collect())
}
pub fn handle_call_hierarchy_prepare(
world: WorldSnapshot,
params: CallHierarchyPrepareParams,
) -> Result<Option<Vec<CallHierarchyItem>>> {
let _p = profile("handle_call_hierarchy_prepare");
let position = params.text_document_position_params.try_conv_with(&world)?;
let file_id = position.file_id;
let nav_info = match world.analysis().call_hierarchy(position)? {
None => return Ok(None),
Some(it) => it,
};
let line_index = world.analysis().file_line_index(file_id)?;
let RangeInfo { range, info: navs } = nav_info;
let res = navs
.into_iter()
.filter(|it| it.kind() == SyntaxKind::FN_DEF)
.filter_map(|it| to_call_hierarchy_item(file_id, range, &world, &line_index, it).ok())
.collect();
Ok(Some(res))
}
pub fn handle_call_hierarchy_incoming(
world: WorldSnapshot,
params: CallHierarchyIncomingCallsParams,
) -> Result<Option<Vec<CallHierarchyIncomingCall>>> {
let _p = profile("handle_call_hierarchy_incoming");
let item = params.item;
let doc = TextDocumentIdentifier::new(item.uri);
let frange: FileRange = (&doc, item.range).try_conv_with(&world)?;
let fpos = FilePosition { file_id: frange.file_id, offset: frange.range.start() };
let call_items = match world.analysis().incoming_calls(fpos)? {
None => return Ok(None),
Some(it) => it,
};
let mut res = vec![];
for call_item in call_items.into_iter() {
let file_id = call_item.target.file_id();
let line_index = world.analysis().file_line_index(file_id)?;
let range = call_item.target.range();
let item = to_call_hierarchy_item(file_id, range, &world, &line_index, call_item.target)?;
res.push(CallHierarchyIncomingCall {
from: item,
from_ranges: call_item.ranges.iter().map(|it| it.conv_with(&line_index)).collect(),
});
}
Ok(Some(res))
}
pub fn handle_call_hierarchy_outgoing(
world: WorldSnapshot,
params: CallHierarchyOutgoingCallsParams,
) -> Result<Option<Vec<CallHierarchyOutgoingCall>>> {
let _p = profile("handle_call_hierarchy_outgoing");
let item = params.item;
let doc = TextDocumentIdentifier::new(item.uri);
let frange: FileRange = (&doc, item.range).try_conv_with(&world)?;
let fpos = FilePosition { file_id: frange.file_id, offset: frange.range.start() };
let call_items = match world.analysis().outgoing_calls(fpos)? {
None => return Ok(None),
Some(it) => it,
};
let mut res = vec![];
for call_item in call_items.into_iter() {
let file_id = call_item.target.file_id();
let line_index = world.analysis().file_line_index(file_id)?;
let range = call_item.target.range();
let item = to_call_hierarchy_item(file_id, range, &world, &line_index, call_item.target)?;
res.push(CallHierarchyOutgoingCall {
to: item,
from_ranges: call_item.ranges.iter().map(|it| it.conv_with(&line_index)).collect(),
});
}
Ok(Some(res))
}
pub fn handle_semantic_tokens(
world: WorldSnapshot,
params: SemanticTokensParams,
) -> Result<Option<SemanticTokensResult>> {
let _p = profile("handle_semantic_tokens");
let file_id = params.text_document.try_conv_with(&world)?;
let line_index = world.analysis().file_line_index(file_id)?;
let mut builder = SemanticTokensBuilder::default();
for highlight_range in world.analysis().highlight(file_id)?.into_iter() {
let (token_type, token_modifiers) = highlight_range.highlight.conv();
builder.push(highlight_range.range.conv_with(&line_index), token_type, token_modifiers);
}
let tokens = SemanticTokens { data: builder.build(), ..Default::default() };
Ok(Some(tokens.into()))
}
pub fn handle_semantic_tokens_range(
world: WorldSnapshot,
params: SemanticTokensRangeParams,
) -> Result<Option<SemanticTokensRangeResult>> {
let _p = profile("handle_semantic_tokens_range");
let frange = (¶ms.text_document, params.range).try_conv_with(&world)?;
let line_index = world.analysis().file_line_index(frange.file_id)?;
let mut builder = SemanticTokensBuilder::default();
for highlight_range in world.analysis().highlight_range(frange)?.into_iter() {
let (token_type, token_modifiers) = highlight_range.highlight.conv();
builder.push(highlight_range.range.conv_with(&line_index), token_type, token_modifiers);
}
let tokens = SemanticTokens { data: builder.build(), ..Default::default() };
Ok(Some(tokens.into()))
}
|