mirror of
https://github.com/rust-lang/rust-analyzer
synced 2024-11-16 01:38:13 +00:00
Merge #3346
3346: More cleanup r=matklad a=matklad
bors r+
🤖
Co-authored-by: Aleksey Kladov <aleksey.kladov@gmail.com>
This commit is contained in:
bors[bot]
GitHub
commit
57f0d6cba3
2 changed files with 230 additions and 241 deletions
|
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@ -1,7 +1,9 @@
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//! FIXME: write short doc here
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//! Implements syntax highlighting.
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mod tags;
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mod html;
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#[cfg(test)]
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mod tests;
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use hir::{Name, Semantics};
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use ra_ide_db::{
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@ -10,16 +12,14 @@ use ra_ide_db::{
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};
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use ra_prof::profile;
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use ra_syntax::{
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ast, AstNode, Direction, NodeOrToken, SyntaxElement, SyntaxKind, SyntaxKind::*, SyntaxToken,
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TextRange, WalkEvent, T,
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ast, AstNode, Direction, NodeOrToken, SyntaxElement, SyntaxKind::*, TextRange, WalkEvent, T,
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};
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use rustc_hash::FxHashMap;
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use crate::{references::classify_name_ref, FileId};
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pub use tags::{Highlight, HighlightModifier, HighlightModifiers, HighlightTag};
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pub(crate) use html::highlight_as_html;
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pub use tags::{Highlight, HighlightModifier, HighlightModifiers, HighlightTag};
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#[derive(Debug)]
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pub struct HighlightedRange {
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@ -28,21 +28,6 @@ pub struct HighlightedRange {
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pub binding_hash: Option<u64>,
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}
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fn is_control_keyword(kind: SyntaxKind) -> bool {
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match kind {
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T![for]
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| T![loop]
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| T![while]
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| T![continue]
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| T![break]
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| T![if]
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| T![else]
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| T![match]
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| T![return] => true,
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_ => false,
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}
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}
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pub(crate) fn highlight(
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db: &RootDatabase,
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file_id: FileId,
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@ -71,20 +56,24 @@ pub(crate) fn highlight(
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let mut current_macro_call: Option<ast::MacroCall> = None;
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// Walk all nodes, keeping track of whether we are inside a macro or not.
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// If in macro, expand it first and highlight the expanded code.
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for event in root.preorder_with_tokens() {
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let event_range = match &event {
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WalkEvent::Enter(it) => it.text_range(),
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WalkEvent::Leave(it) => it.text_range(),
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};
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if event_range.intersection(&range_to_highlight).is_none() {
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// Element outside of the viewport, no need to highlight
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if range_to_highlight.intersection(&event_range).is_none() {
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continue;
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}
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// Track "inside macro" state
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match event.clone().map(|it| it.into_node().and_then(ast::MacroCall::cast)) {
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WalkEvent::Enter(Some(mc)) => {
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current_macro_call = Some(mc.clone());
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if let Some(range) = highlight_macro(&mc) {
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if let Some(range) = macro_call_range(&mc) {
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res.push(HighlightedRange {
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range,
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highlight: HighlightTag::Macro.into(),
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@ -101,37 +90,40 @@ pub(crate) fn highlight(
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_ => (),
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}
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let node = match event {
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let element = match event {
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WalkEvent::Enter(it) => it,
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WalkEvent::Leave(_) => continue,
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};
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let range = element.text_range();
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if current_macro_call.is_some() {
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if let Some(token) = node.into_token() {
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if let Some((highlight, binding_hash)) =
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highlight_token_tree(&sema, &mut bindings_shadow_count, token.clone())
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{
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res.push(HighlightedRange {
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range: token.text_range(),
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highlight,
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binding_hash,
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});
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}
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let element_to_highlight = if current_macro_call.is_some() {
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// Inside a macro -- expand it first
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let token = match element.into_token() {
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Some(it) if it.parent().kind() == TOKEN_TREE => it,
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_ => continue,
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};
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let token = sema.descend_into_macros(token.clone());
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let parent = token.parent();
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// We only care Name and Name_ref
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match (token.kind(), parent.kind()) {
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(IDENT, NAME) | (IDENT, NAME_REF) => parent.into(),
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_ => token.into(),
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}
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continue;
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}
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} else {
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element
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};
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if let Some((highlight, binding_hash)) =
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highlight_node(&sema, &mut bindings_shadow_count, node.clone())
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highlight_element(&sema, &mut bindings_shadow_count, element_to_highlight)
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{
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res.push(HighlightedRange { range: node.text_range(), highlight, binding_hash });
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res.push(HighlightedRange { range, highlight, binding_hash });
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}
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}
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res
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}
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fn highlight_macro(macro_call: &ast::MacroCall) -> Option<TextRange> {
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fn macro_call_range(macro_call: &ast::MacroCall) -> Option<TextRange> {
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let path = macro_call.path()?;
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let name_ref = path.segment()?.name_ref()?;
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@ -147,67 +139,22 @@ fn highlight_macro(macro_call: &ast::MacroCall) -> Option<TextRange> {
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Some(TextRange::from_to(range_start, range_end))
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}
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fn highlight_token_tree(
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fn highlight_element(
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sema: &Semantics<RootDatabase>,
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bindings_shadow_count: &mut FxHashMap<Name, u32>,
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token: SyntaxToken,
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) -> Option<(Highlight, Option<u64>)> {
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if token.parent().kind() != TOKEN_TREE {
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return None;
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}
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let token = sema.descend_into_macros(token.clone());
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let expanded = {
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let parent = token.parent();
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// We only care Name and Name_ref
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match (token.kind(), parent.kind()) {
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(IDENT, NAME) | (IDENT, NAME_REF) => parent.into(),
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_ => token.into(),
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}
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};
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highlight_node(sema, bindings_shadow_count, expanded)
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}
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fn highlight_node(
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sema: &Semantics<RootDatabase>,
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bindings_shadow_count: &mut FxHashMap<Name, u32>,
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node: SyntaxElement,
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element: SyntaxElement,
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) -> Option<(Highlight, Option<u64>)> {
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let db = sema.db;
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let mut binding_hash = None;
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let highlight: Highlight = match node.kind() {
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let highlight: Highlight = match element.kind() {
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FN_DEF => {
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bindings_shadow_count.clear();
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return None;
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}
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COMMENT => HighlightTag::Comment.into(),
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STRING | RAW_STRING | RAW_BYTE_STRING | BYTE_STRING => HighlightTag::LiteralString.into(),
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ATTR => HighlightTag::Attribute.into(),
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// Special-case field init shorthand
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NAME_REF if node.parent().and_then(ast::RecordField::cast).is_some() => {
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HighlightTag::Field.into()
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}
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NAME_REF if node.ancestors().any(|it| it.kind() == ATTR) => return None,
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NAME_REF => {
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let name_ref = node.as_node().cloned().and_then(ast::NameRef::cast).unwrap();
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let name_kind = classify_name_ref(sema, &name_ref);
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match name_kind {
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Some(name_kind) => {
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if let NameDefinition::Local(local) = &name_kind {
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if let Some(name) = local.name(db) {
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let shadow_count =
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bindings_shadow_count.entry(name.clone()).or_default();
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binding_hash = Some(calc_binding_hash(&name, *shadow_count))
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}
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};
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highlight_name(db, name_kind)
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}
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_ => return None,
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}
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}
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// Highlight definitions depending on the "type" of the definition.
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NAME => {
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let name = node.as_node().cloned().and_then(ast::Name::cast).unwrap();
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let name = element.into_node().and_then(ast::Name::cast).unwrap();
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let name_kind = classify_name(sema, &name);
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if let Some(NameDefinition::Local(local)) = &name_kind {
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@ -220,25 +167,56 @@ fn highlight_node(
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match name_kind {
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Some(name_kind) => highlight_name(db, name_kind),
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None => name.syntax().parent().map_or(HighlightTag::Function.into(), |x| {
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match x.kind() {
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STRUCT_DEF | ENUM_DEF | TRAIT_DEF | TYPE_ALIAS_DEF => {
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HighlightTag::Type.into()
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}
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TYPE_PARAM => HighlightTag::TypeParam.into(),
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RECORD_FIELD_DEF => HighlightTag::Field.into(),
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_ => HighlightTag::Function.into(),
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}
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}),
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None => highlight_name_by_syntax(name),
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}
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}
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// Highlight references like the definitions they resolve to
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// Special-case field init shorthand
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NAME_REF if element.parent().and_then(ast::RecordField::cast).is_some() => {
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HighlightTag::Field.into()
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}
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NAME_REF if element.ancestors().any(|it| it.kind() == ATTR) => return None,
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NAME_REF => {
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let name_ref = element.into_node().and_then(ast::NameRef::cast).unwrap();
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let name_kind = classify_name_ref(sema, &name_ref)?;
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if let NameDefinition::Local(local) = &name_kind {
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if let Some(name) = local.name(db) {
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let shadow_count = bindings_shadow_count.entry(name.clone()).or_default();
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binding_hash = Some(calc_binding_hash(&name, *shadow_count))
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}
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};
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highlight_name(db, name_kind)
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}
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// Simple token-based highlighting
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COMMENT => HighlightTag::Comment.into(),
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STRING | RAW_STRING | RAW_BYTE_STRING | BYTE_STRING => HighlightTag::LiteralString.into(),
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ATTR => HighlightTag::Attribute.into(),
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INT_NUMBER | FLOAT_NUMBER => HighlightTag::LiteralNumeric.into(),
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BYTE => HighlightTag::LiteralByte.into(),
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CHAR => HighlightTag::LiteralChar.into(),
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LIFETIME => HighlightTag::TypeLifetime.into(),
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T![unsafe] => HighlightTag::Keyword | HighlightModifier::Unsafe,
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k if is_control_keyword(k) => HighlightTag::Keyword | HighlightModifier::Control,
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k if k.is_keyword() => HighlightTag::Keyword.into(),
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k if k.is_keyword() => {
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let h = Highlight::new(HighlightTag::Keyword);
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match k {
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T![break]
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| T![continue]
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| T![else]
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| T![for]
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| T![if]
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| T![loop]
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| T![match]
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| T![return]
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| T![while] => h | HighlightModifier::Control,
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T![unsafe] => h | HighlightModifier::Unsafe,
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_ => h,
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}
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}
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_ => return None,
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};
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|
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@ -262,17 +240,19 @@ fn highlight_name(db: &RootDatabase, def: NameDefinition) -> Highlight {
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match def {
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NameDefinition::Macro(_) => HighlightTag::Macro,
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NameDefinition::StructField(_) => HighlightTag::Field,
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NameDefinition::ModuleDef(hir::ModuleDef::Module(_)) => HighlightTag::Module,
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NameDefinition::ModuleDef(hir::ModuleDef::Function(_)) => HighlightTag::Function,
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NameDefinition::ModuleDef(hir::ModuleDef::Adt(_)) => HighlightTag::Type,
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NameDefinition::ModuleDef(hir::ModuleDef::EnumVariant(_)) => HighlightTag::Constant,
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NameDefinition::ModuleDef(hir::ModuleDef::Const(_)) => HighlightTag::Constant,
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NameDefinition::ModuleDef(hir::ModuleDef::Static(_)) => HighlightTag::Constant,
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NameDefinition::ModuleDef(hir::ModuleDef::Trait(_)) => HighlightTag::Type,
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NameDefinition::ModuleDef(hir::ModuleDef::TypeAlias(_)) => HighlightTag::Type,
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NameDefinition::ModuleDef(hir::ModuleDef::BuiltinType(_)) => {
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return HighlightTag::Type | HighlightModifier::Builtin
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}
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NameDefinition::ModuleDef(def) => match def {
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hir::ModuleDef::Module(_) => HighlightTag::Module,
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hir::ModuleDef::Function(_) => HighlightTag::Function,
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hir::ModuleDef::Adt(_) => HighlightTag::Type,
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hir::ModuleDef::EnumVariant(_) => HighlightTag::Constant,
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hir::ModuleDef::Const(_) => HighlightTag::Constant,
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hir::ModuleDef::Static(_) => HighlightTag::Constant,
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hir::ModuleDef::Trait(_) => HighlightTag::Type,
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hir::ModuleDef::TypeAlias(_) => HighlightTag::Type,
|
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hir::ModuleDef::BuiltinType(_) => {
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return HighlightTag::Type | HighlightModifier::Builtin
|
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}
|
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},
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NameDefinition::SelfType(_) => HighlightTag::TypeSelf,
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NameDefinition::TypeParam(_) => HighlightTag::TypeParam,
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NameDefinition::Local(local) => {
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|
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@ -286,136 +266,18 @@ fn highlight_name(db: &RootDatabase, def: NameDefinition) -> Highlight {
|
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.into()
|
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}
|
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|
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#[cfg(test)]
|
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mod tests {
|
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use std::fs;
|
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fn highlight_name_by_syntax(name: ast::Name) -> Highlight {
|
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let default = HighlightTag::Function.into();
|
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|
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use test_utils::{assert_eq_text, project_dir, read_text};
|
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|
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use crate::{
|
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mock_analysis::{single_file, MockAnalysis},
|
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FileRange, TextRange,
|
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let parent = match name.syntax().parent() {
|
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Some(it) => it,
|
||||
_ => return default,
|
||||
};
|
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|
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#[test]
|
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fn test_highlighting() {
|
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let (analysis, file_id) = single_file(
|
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r#"
|
||||
#[derive(Clone, Debug)]
|
||||
struct Foo {
|
||||
pub x: i32,
|
||||
pub y: i32,
|
||||
}
|
||||
|
||||
fn foo<T>() -> T {
|
||||
unimplemented!();
|
||||
foo::<i32>();
|
||||
}
|
||||
|
||||
macro_rules! def_fn {
|
||||
($($tt:tt)*) => {$($tt)*}
|
||||
}
|
||||
|
||||
def_fn!{
|
||||
fn bar() -> u32 {
|
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100
|
||||
}
|
||||
}
|
||||
|
||||
// comment
|
||||
fn main() {
|
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println!("Hello, {}!", 92);
|
||||
|
||||
let mut vec = Vec::new();
|
||||
if true {
|
||||
let x = 92;
|
||||
vec.push(Foo { x, y: 1 });
|
||||
}
|
||||
unsafe { vec.set_len(0); }
|
||||
|
||||
let mut x = 42;
|
||||
let y = &mut x;
|
||||
let z = &y;
|
||||
|
||||
y;
|
||||
}
|
||||
|
||||
enum E<X> {
|
||||
V(X)
|
||||
}
|
||||
|
||||
impl<X> E<X> {
|
||||
fn new<T>() -> E<T> {}
|
||||
}
|
||||
"#
|
||||
.trim(),
|
||||
);
|
||||
let dst_file = project_dir().join("crates/ra_ide/src/snapshots/highlighting.html");
|
||||
let actual_html = &analysis.highlight_as_html(file_id, false).unwrap();
|
||||
let expected_html = &read_text(&dst_file);
|
||||
fs::write(dst_file, &actual_html).unwrap();
|
||||
assert_eq_text!(expected_html, actual_html);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn test_rainbow_highlighting() {
|
||||
let (analysis, file_id) = single_file(
|
||||
r#"
|
||||
fn main() {
|
||||
let hello = "hello";
|
||||
let x = hello.to_string();
|
||||
let y = hello.to_string();
|
||||
|
||||
let x = "other color please!";
|
||||
let y = x.to_string();
|
||||
}
|
||||
|
||||
fn bar() {
|
||||
let mut hello = "hello";
|
||||
}
|
||||
"#
|
||||
.trim(),
|
||||
);
|
||||
let dst_file = project_dir().join("crates/ra_ide/src/snapshots/rainbow_highlighting.html");
|
||||
let actual_html = &analysis.highlight_as_html(file_id, true).unwrap();
|
||||
let expected_html = &read_text(&dst_file);
|
||||
fs::write(dst_file, &actual_html).unwrap();
|
||||
assert_eq_text!(expected_html, actual_html);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn accidentally_quadratic() {
|
||||
let file = project_dir().join("crates/ra_syntax/test_data/accidentally_quadratic");
|
||||
let src = fs::read_to_string(file).unwrap();
|
||||
|
||||
let mut mock = MockAnalysis::new();
|
||||
let file_id = mock.add_file("/main.rs", &src);
|
||||
let host = mock.analysis_host();
|
||||
|
||||
// let t = std::time::Instant::now();
|
||||
let _ = host.analysis().highlight(file_id).unwrap();
|
||||
// eprintln!("elapsed: {:?}", t.elapsed());
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn test_ranges() {
|
||||
let (analysis, file_id) = single_file(
|
||||
r#"
|
||||
#[derive(Clone, Debug)]
|
||||
struct Foo {
|
||||
pub x: i32,
|
||||
pub y: i32,
|
||||
}"#,
|
||||
);
|
||||
|
||||
// The "x"
|
||||
let highlights = &analysis
|
||||
.highlight_range(FileRange {
|
||||
file_id,
|
||||
range: TextRange::offset_len(82.into(), 1.into()),
|
||||
})
|
||||
.unwrap();
|
||||
|
||||
assert_eq!(&highlights[0].highlight.to_string(), "field");
|
||||
match parent.kind() {
|
||||
STRUCT_DEF | ENUM_DEF | TRAIT_DEF | TYPE_ALIAS_DEF => HighlightTag::Type.into(),
|
||||
TYPE_PARAM => HighlightTag::TypeParam.into(),
|
||||
RECORD_FIELD_DEF => HighlightTag::Field.into(),
|
||||
_ => default,
|
||||
}
|
||||
}
|
||||
|
|
|
|||
127
crates/ra_ide/src/syntax_highlighting/tests.rs
Normal file
127
crates/ra_ide/src/syntax_highlighting/tests.rs
Normal file
|
|
@ -0,0 +1,127 @@
|
|||
use std::fs;
|
||||
|
||||
use test_utils::{assert_eq_text, project_dir, read_text};
|
||||
|
||||
use crate::{
|
||||
mock_analysis::{single_file, MockAnalysis},
|
||||
FileRange, TextRange,
|
||||
};
|
||||
|
||||
#[test]
|
||||
fn test_highlighting() {
|
||||
let (analysis, file_id) = single_file(
|
||||
r#"
|
||||
#[derive(Clone, Debug)]
|
||||
struct Foo {
|
||||
pub x: i32,
|
||||
pub y: i32,
|
||||
}
|
||||
|
||||
fn foo<T>() -> T {
|
||||
unimplemented!();
|
||||
foo::<i32>();
|
||||
}
|
||||
|
||||
macro_rules! def_fn {
|
||||
($($tt:tt)*) => {$($tt)*}
|
||||
}
|
||||
|
||||
def_fn!{
|
||||
fn bar() -> u32 {
|
||||
100
|
||||
}
|
||||
}
|
||||
|
||||
// comment
|
||||
fn main() {
|
||||
println!("Hello, {}!", 92);
|
||||
|
||||
let mut vec = Vec::new();
|
||||
if true {
|
||||
let x = 92;
|
||||
vec.push(Foo { x, y: 1 });
|
||||
}
|
||||
unsafe { vec.set_len(0); }
|
||||
|
||||
let mut x = 42;
|
||||
let y = &mut x;
|
||||
let z = &y;
|
||||
|
||||
y;
|
||||
}
|
||||
|
||||
enum E<X> {
|
||||
V(X)
|
||||
}
|
||||
|
||||
impl<X> E<X> {
|
||||
fn new<T>() -> E<T> {}
|
||||
}
|
||||
"#
|
||||
.trim(),
|
||||
);
|
||||
let dst_file = project_dir().join("crates/ra_ide/src/snapshots/highlighting.html");
|
||||
let actual_html = &analysis.highlight_as_html(file_id, false).unwrap();
|
||||
let expected_html = &read_text(&dst_file);
|
||||
fs::write(dst_file, &actual_html).unwrap();
|
||||
assert_eq_text!(expected_html, actual_html);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn test_rainbow_highlighting() {
|
||||
let (analysis, file_id) = single_file(
|
||||
r#"
|
||||
fn main() {
|
||||
let hello = "hello";
|
||||
let x = hello.to_string();
|
||||
let y = hello.to_string();
|
||||
|
||||
let x = "other color please!";
|
||||
let y = x.to_string();
|
||||
}
|
||||
|
||||
fn bar() {
|
||||
let mut hello = "hello";
|
||||
}
|
||||
"#
|
||||
.trim(),
|
||||
);
|
||||
let dst_file = project_dir().join("crates/ra_ide/src/snapshots/rainbow_highlighting.html");
|
||||
let actual_html = &analysis.highlight_as_html(file_id, true).unwrap();
|
||||
let expected_html = &read_text(&dst_file);
|
||||
fs::write(dst_file, &actual_html).unwrap();
|
||||
assert_eq_text!(expected_html, actual_html);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn accidentally_quadratic() {
|
||||
let file = project_dir().join("crates/ra_syntax/test_data/accidentally_quadratic");
|
||||
let src = fs::read_to_string(file).unwrap();
|
||||
|
||||
let mut mock = MockAnalysis::new();
|
||||
let file_id = mock.add_file("/main.rs", &src);
|
||||
let host = mock.analysis_host();
|
||||
|
||||
// let t = std::time::Instant::now();
|
||||
let _ = host.analysis().highlight(file_id).unwrap();
|
||||
// eprintln!("elapsed: {:?}", t.elapsed());
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn test_ranges() {
|
||||
let (analysis, file_id) = single_file(
|
||||
r#"
|
||||
#[derive(Clone, Debug)]
|
||||
struct Foo {
|
||||
pub x: i32,
|
||||
pub y: i32,
|
||||
}"#,
|
||||
);
|
||||
|
||||
// The "x"
|
||||
let highlights = &analysis
|
||||
.highlight_range(FileRange { file_id, range: TextRange::offset_len(82.into(), 1.into()) })
|
||||
.unwrap();
|
||||
|
||||
assert_eq!(&highlights[0].highlight.to_string(), "field");
|
||||
}
|
||||
Loading…
Reference in a new issue