1209 lines
26 KiB
Rust
1209 lines
26 KiB
Rust
//! This module handles auto-magic editing actions applied together with users
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//! edits. For example, if the user typed
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//!
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//! ```text
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//! foo
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//! .bar()
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//! .baz()
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//! | // <- cursor is here
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//! ```
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//!
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//! and types `.` next, we want to indent the dot.
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//!
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//! Language server executes such typing assists synchronously. That is, they
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//! block user's typing and should be pretty fast for this reason!
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mod on_enter;
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use ide_db::{
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base_db::{FilePosition, SourceDatabase},
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RootDatabase,
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};
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use syntax::{
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algo::{ancestors_at_offset, find_node_at_offset},
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ast::{self, edit::IndentLevel, AstToken},
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AstNode, Parse, SourceFile, SyntaxKind, TextRange, TextSize, T,
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};
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use text_edit::{Indel, TextEdit};
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use crate::SourceChange;
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pub(crate) use on_enter::on_enter;
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// Don't forget to add new trigger characters to `server_capabilities` in `caps.rs`.
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pub(crate) const TRIGGER_CHARS: &str = ".=<>{";
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struct ExtendedTextEdit {
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edit: TextEdit,
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is_snippet: bool,
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}
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// Feature: On Typing Assists
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//
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// Some features trigger on typing certain characters:
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//
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// - typing `let =` tries to smartly add `;` if `=` is followed by an existing expression
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// - typing `=` between two expressions adds `;` when in statement position
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// - typing `=` to turn an assignment into an equality comparison removes `;` when in expression position
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// - typing `.` in a chain method call auto-indents
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// - typing `{` in front of an expression inserts a closing `}` after the expression
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// - typing `{` in a use item adds a closing `}` in the right place
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//
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// VS Code::
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//
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// Add the following to `settings.json`:
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// [source,json]
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// ----
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// "editor.formatOnType": true,
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// ----
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//
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// image::https://user-images.githubusercontent.com/48062697/113166163-69758500-923a-11eb-81ee-eb33ec380399.gif[]
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// image::https://user-images.githubusercontent.com/48062697/113171066-105c2000-923f-11eb-87ab-f4a263346567.gif[]
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pub(crate) fn on_char_typed(
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db: &RootDatabase,
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position: FilePosition,
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char_typed: char,
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) -> Option<SourceChange> {
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if !stdx::always!(TRIGGER_CHARS.contains(char_typed)) {
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return None;
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}
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let file = &db.parse(position.file_id);
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if !stdx::always!(file.tree().syntax().text().char_at(position.offset) == Some(char_typed)) {
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return None;
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}
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let edit = on_char_typed_inner(file, position.offset, char_typed)?;
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let mut sc = SourceChange::from_text_edit(position.file_id, edit.edit);
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sc.is_snippet = edit.is_snippet;
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Some(sc)
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}
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fn on_char_typed_inner(
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file: &Parse<SourceFile>,
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offset: TextSize,
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char_typed: char,
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) -> Option<ExtendedTextEdit> {
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if !stdx::always!(TRIGGER_CHARS.contains(char_typed)) {
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return None;
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}
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return match char_typed {
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'.' => conv(on_dot_typed(&file.tree(), offset)),
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'=' => conv(on_eq_typed(&file.tree(), offset)),
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'<' => on_left_angle_typed(&file.tree(), offset),
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'>' => conv(on_right_angle_typed(&file.tree(), offset)),
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'{' => conv(on_opening_brace_typed(file, offset)),
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_ => return None,
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};
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fn conv(text_edit: Option<TextEdit>) -> Option<ExtendedTextEdit> {
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Some(ExtendedTextEdit { edit: text_edit?, is_snippet: false })
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}
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}
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/// Inserts a closing `}` when the user types an opening `{`, wrapping an existing expression in a
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/// block, or a part of a `use` item.
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fn on_opening_brace_typed(file: &Parse<SourceFile>, offset: TextSize) -> Option<TextEdit> {
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if !stdx::always!(file.tree().syntax().text().char_at(offset) == Some('{')) {
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return None;
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}
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let brace_token = file.tree().syntax().token_at_offset(offset).right_biased()?;
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if brace_token.kind() != SyntaxKind::L_CURLY {
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return None;
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}
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// Remove the `{` to get a better parse tree, and reparse.
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let range = brace_token.text_range();
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if !stdx::always!(range.len() == TextSize::of('{')) {
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return None;
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}
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let file = file.reparse(&Indel::delete(range));
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if let Some(edit) = brace_expr(&file.tree(), offset) {
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return Some(edit);
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}
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if let Some(edit) = brace_use_path(&file.tree(), offset) {
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return Some(edit);
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}
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return None;
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fn brace_use_path(file: &SourceFile, offset: TextSize) -> Option<TextEdit> {
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let segment: ast::PathSegment = find_node_at_offset(file.syntax(), offset)?;
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if segment.syntax().text_range().start() != offset {
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return None;
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}
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let tree: ast::UseTree = find_node_at_offset(file.syntax(), offset)?;
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Some(TextEdit::insert(
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tree.syntax().text_range().end() + TextSize::of("{"),
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"}".to_string(),
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))
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}
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fn brace_expr(file: &SourceFile, offset: TextSize) -> Option<TextEdit> {
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let mut expr: ast::Expr = find_node_at_offset(file.syntax(), offset)?;
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if expr.syntax().text_range().start() != offset {
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return None;
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}
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// Enclose the outermost expression starting at `offset`
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while let Some(parent) = expr.syntax().parent() {
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if parent.text_range().start() != expr.syntax().text_range().start() {
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break;
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}
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match ast::Expr::cast(parent) {
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Some(parent) => expr = parent,
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None => break,
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}
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}
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// If it's a statement in a block, we don't know how many statements should be included
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if ast::ExprStmt::can_cast(expr.syntax().parent()?.kind()) {
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return None;
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}
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// Insert `}` right after the expression.
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Some(TextEdit::insert(
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expr.syntax().text_range().end() + TextSize::of("{"),
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"}".to_string(),
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))
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}
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}
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/// Returns an edit which should be applied after `=` was typed. Primarily,
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/// this works when adding `let =`.
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// FIXME: use a snippet completion instead of this hack here.
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fn on_eq_typed(file: &SourceFile, offset: TextSize) -> Option<TextEdit> {
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if !stdx::always!(file.syntax().text().char_at(offset) == Some('=')) {
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return None;
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}
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if let Some(edit) = let_stmt(file, offset) {
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return Some(edit);
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}
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if let Some(edit) = assign_expr(file, offset) {
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return Some(edit);
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}
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if let Some(edit) = assign_to_eq(file, offset) {
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return Some(edit);
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}
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return None;
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fn assign_expr(file: &SourceFile, offset: TextSize) -> Option<TextEdit> {
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let binop: ast::BinExpr = find_node_at_offset(file.syntax(), offset)?;
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if !matches!(binop.op_kind(), Some(ast::BinaryOp::Assignment { op: None })) {
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return None;
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}
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// Parent must be `ExprStmt` or `StmtList` for `;` to be valid.
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if let Some(expr_stmt) = ast::ExprStmt::cast(binop.syntax().parent()?) {
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if expr_stmt.semicolon_token().is_some() {
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return None;
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}
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} else if !ast::StmtList::can_cast(binop.syntax().parent()?.kind()) {
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return None;
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}
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let expr = binop.rhs()?;
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let expr_range = expr.syntax().text_range();
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if expr_range.contains(offset) && offset != expr_range.start() {
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return None;
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}
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if file.syntax().text().slice(offset..expr_range.start()).contains_char('\n') {
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return None;
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}
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let offset = expr.syntax().text_range().end();
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Some(TextEdit::insert(offset, ";".to_string()))
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}
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/// `a =$0 b;` removes the semicolon if an expression is valid in this context.
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fn assign_to_eq(file: &SourceFile, offset: TextSize) -> Option<TextEdit> {
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let binop: ast::BinExpr = find_node_at_offset(file.syntax(), offset)?;
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if !matches!(binop.op_kind(), Some(ast::BinaryOp::CmpOp(ast::CmpOp::Eq { negated: false })))
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{
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return None;
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}
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let expr_stmt = ast::ExprStmt::cast(binop.syntax().parent()?)?;
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let semi = expr_stmt.semicolon_token()?;
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if expr_stmt.syntax().next_sibling().is_some() {
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// Not the last statement in the list.
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return None;
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}
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Some(TextEdit::delete(semi.text_range()))
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}
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fn let_stmt(file: &SourceFile, offset: TextSize) -> Option<TextEdit> {
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let let_stmt: ast::LetStmt = find_node_at_offset(file.syntax(), offset)?;
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if let_stmt.semicolon_token().is_some() {
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return None;
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}
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let expr = let_stmt.initializer()?;
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let expr_range = expr.syntax().text_range();
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if expr_range.contains(offset) && offset != expr_range.start() {
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return None;
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}
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if file.syntax().text().slice(offset..expr_range.start()).contains_char('\n') {
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return None;
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}
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let offset = let_stmt.syntax().text_range().end();
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Some(TextEdit::insert(offset, ";".to_string()))
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}
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}
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/// Returns an edit which should be applied when a dot ('.') is typed on a blank line, indenting the line appropriately.
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fn on_dot_typed(file: &SourceFile, offset: TextSize) -> Option<TextEdit> {
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if !stdx::always!(file.syntax().text().char_at(offset) == Some('.')) {
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return None;
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}
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let whitespace =
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file.syntax().token_at_offset(offset).left_biased().and_then(ast::Whitespace::cast)?;
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// if prior is fn call over multiple lines dont indent
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// or if previous is method call over multiples lines keep that indent
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let current_indent = {
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let text = whitespace.text();
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let (_prefix, suffix) = text.rsplit_once('\n')?;
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suffix
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};
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let current_indent_len = TextSize::of(current_indent);
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let parent = whitespace.syntax().parent()?;
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// Make sure dot is a part of call chain
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let receiver = if let Some(field_expr) = ast::FieldExpr::cast(parent.clone()) {
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field_expr.expr()?
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} else if let Some(method_call_expr) = ast::MethodCallExpr::cast(parent.clone()) {
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method_call_expr.receiver()?
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} else {
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return None;
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};
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let receiver_is_multiline = receiver.syntax().text().find_char('\n').is_some();
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let target_indent = match (receiver, receiver_is_multiline) {
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// if receiver is multiline field or method call, just take the previous `.` indentation
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(ast::Expr::MethodCallExpr(expr), true) => {
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expr.dot_token().as_ref().map(IndentLevel::from_token)
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}
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(ast::Expr::FieldExpr(expr), true) => {
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expr.dot_token().as_ref().map(IndentLevel::from_token)
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}
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// if receiver is multiline expression, just keeps its indentation
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(_, true) => Some(IndentLevel::from_node(&parent)),
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_ => None,
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};
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let target_indent = match target_indent {
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Some(x) => x,
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// in all other cases, take previous indentation and indent once
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None => IndentLevel::from_node(&parent) + 1,
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}
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.to_string();
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if current_indent_len == TextSize::of(&target_indent) {
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return None;
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}
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Some(TextEdit::replace(TextRange::new(offset - current_indent_len, offset), target_indent))
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}
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/// Add closing `>` for generic arguments/parameters.
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fn on_left_angle_typed(file: &SourceFile, offset: TextSize) -> Option<ExtendedTextEdit> {
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let file_text = file.syntax().text();
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if !stdx::always!(file_text.char_at(offset) == Some('<')) {
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return None;
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}
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// Find the next non-whitespace char in the line.
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let mut next_offset = offset + TextSize::of('<');
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while file_text.char_at(next_offset) == Some(' ') {
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next_offset += TextSize::of(' ')
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}
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if file_text.char_at(next_offset) == Some('>') {
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return None;
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}
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let range = TextRange::at(offset, TextSize::of('<'));
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if let Some(t) = file.syntax().token_at_offset(offset).left_biased() {
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if T![impl] == t.kind() {
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return Some(ExtendedTextEdit {
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edit: TextEdit::replace(range, "<$0>".to_string()),
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is_snippet: true,
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});
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}
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}
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if ancestors_at_offset(file.syntax(), offset)
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.find(|n| {
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ast::GenericParamList::can_cast(n.kind()) || ast::GenericArgList::can_cast(n.kind())
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})
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.is_some()
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{
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return Some(ExtendedTextEdit {
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edit: TextEdit::replace(range, "<$0>".to_string()),
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is_snippet: true,
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});
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}
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None
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}
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/// Adds a space after an arrow when `fn foo() { ... }` is turned into `fn foo() -> { ... }`
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fn on_right_angle_typed(file: &SourceFile, offset: TextSize) -> Option<TextEdit> {
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let file_text = file.syntax().text();
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if !stdx::always!(file_text.char_at(offset) == Some('>')) {
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return None;
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}
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let after_arrow = offset + TextSize::of('>');
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if file_text.char_at(after_arrow) != Some('{') {
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return None;
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}
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if find_node_at_offset::<ast::RetType>(file.syntax(), offset).is_none() {
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return None;
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}
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Some(TextEdit::insert(after_arrow, " ".to_string()))
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}
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#[cfg(test)]
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mod tests {
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use test_utils::{assert_eq_text, extract_offset};
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use super::*;
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impl ExtendedTextEdit {
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fn apply(&self, text: &mut String) {
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self.edit.apply(text);
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}
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}
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fn do_type_char(char_typed: char, before: &str) -> Option<String> {
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let (offset, mut before) = extract_offset(before);
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let edit = TextEdit::insert(offset, char_typed.to_string());
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edit.apply(&mut before);
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let parse = SourceFile::parse(&before);
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on_char_typed_inner(&parse, offset, char_typed).map(|it| {
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it.apply(&mut before);
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before.to_string()
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})
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}
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fn type_char(char_typed: char, ra_fixture_before: &str, ra_fixture_after: &str) {
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let actual = do_type_char(char_typed, ra_fixture_before)
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.unwrap_or_else(|| panic!("typing `{char_typed}` did nothing"));
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assert_eq_text!(ra_fixture_after, &actual);
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}
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fn type_char_noop(char_typed: char, ra_fixture_before: &str) {
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let file_change = do_type_char(char_typed, ra_fixture_before);
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assert!(file_change.is_none())
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}
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|
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#[test]
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fn test_semi_after_let() {
|
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// do_check(r"
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// fn foo() {
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// let foo =$0
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// }
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// ", r"
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// fn foo() {
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// let foo =;
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// }
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// ");
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type_char(
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'=',
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r#"
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fn foo() {
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let foo $0 1 + 1
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}
|
|
"#,
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|
r#"
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|
fn foo() {
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let foo = 1 + 1;
|
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}
|
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"#,
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);
|
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// do_check(r"
|
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// fn foo() {
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// let foo =$0
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// let bar = 1;
|
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// }
|
|
// ", r"
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// fn foo() {
|
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// let foo =;
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// let bar = 1;
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// }
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// ");
|
|
}
|
|
|
|
#[test]
|
|
fn test_semi_after_assign() {
|
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type_char(
|
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'=',
|
|
r#"
|
|
fn f() {
|
|
i $0 0
|
|
}
|
|
"#,
|
|
r#"
|
|
fn f() {
|
|
i = 0;
|
|
}
|
|
"#,
|
|
);
|
|
type_char(
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|
'=',
|
|
r#"
|
|
fn f() {
|
|
i $0 0
|
|
i
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|
}
|
|
"#,
|
|
r#"
|
|
fn f() {
|
|
i = 0;
|
|
i
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|
}
|
|
"#,
|
|
);
|
|
type_char_noop(
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|
'=',
|
|
r#"
|
|
fn f(x: u8) {
|
|
if x $0
|
|
}
|
|
"#,
|
|
);
|
|
type_char_noop(
|
|
'=',
|
|
r#"
|
|
fn f(x: u8) {
|
|
if x $0 {}
|
|
}
|
|
"#,
|
|
);
|
|
type_char_noop(
|
|
'=',
|
|
r#"
|
|
fn f(x: u8) {
|
|
if x $0 0 {}
|
|
}
|
|
"#,
|
|
);
|
|
type_char_noop(
|
|
'=',
|
|
r#"
|
|
fn f() {
|
|
g(i $0 0);
|
|
}
|
|
"#,
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn assign_to_eq() {
|
|
type_char(
|
|
'=',
|
|
r#"
|
|
fn f(a: u8) {
|
|
a =$0 0;
|
|
}
|
|
"#,
|
|
r#"
|
|
fn f(a: u8) {
|
|
a == 0
|
|
}
|
|
"#,
|
|
);
|
|
type_char(
|
|
'=',
|
|
r#"
|
|
fn f(a: u8) {
|
|
a $0= 0;
|
|
}
|
|
"#,
|
|
r#"
|
|
fn f(a: u8) {
|
|
a == 0
|
|
}
|
|
"#,
|
|
);
|
|
type_char_noop(
|
|
'=',
|
|
r#"
|
|
fn f(a: u8) {
|
|
let e = a =$0 0;
|
|
}
|
|
"#,
|
|
);
|
|
type_char_noop(
|
|
'=',
|
|
r#"
|
|
fn f(a: u8) {
|
|
let e = a =$0 0;
|
|
e
|
|
}
|
|
"#,
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn indents_new_chain_call() {
|
|
type_char(
|
|
'.',
|
|
r#"
|
|
fn main() {
|
|
xs.foo()
|
|
$0
|
|
}
|
|
"#,
|
|
r#"
|
|
fn main() {
|
|
xs.foo()
|
|
.
|
|
}
|
|
"#,
|
|
);
|
|
type_char_noop(
|
|
'.',
|
|
r#"
|
|
fn main() {
|
|
xs.foo()
|
|
$0
|
|
}
|
|
"#,
|
|
)
|
|
}
|
|
|
|
#[test]
|
|
fn indents_new_chain_call_with_semi() {
|
|
type_char(
|
|
'.',
|
|
r"
|
|
fn main() {
|
|
xs.foo()
|
|
$0;
|
|
}
|
|
",
|
|
r#"
|
|
fn main() {
|
|
xs.foo()
|
|
.;
|
|
}
|
|
"#,
|
|
);
|
|
type_char_noop(
|
|
'.',
|
|
r#"
|
|
fn main() {
|
|
xs.foo()
|
|
$0;
|
|
}
|
|
"#,
|
|
)
|
|
}
|
|
|
|
#[test]
|
|
fn indents_new_chain_call_with_let() {
|
|
type_char(
|
|
'.',
|
|
r#"
|
|
fn main() {
|
|
let _ = foo
|
|
$0
|
|
bar()
|
|
}
|
|
"#,
|
|
r#"
|
|
fn main() {
|
|
let _ = foo
|
|
.
|
|
bar()
|
|
}
|
|
"#,
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn indents_continued_chain_call() {
|
|
type_char(
|
|
'.',
|
|
r#"
|
|
fn main() {
|
|
xs.foo()
|
|
.first()
|
|
$0
|
|
}
|
|
"#,
|
|
r#"
|
|
fn main() {
|
|
xs.foo()
|
|
.first()
|
|
.
|
|
}
|
|
"#,
|
|
);
|
|
type_char_noop(
|
|
'.',
|
|
r#"
|
|
fn main() {
|
|
xs.foo()
|
|
.first()
|
|
$0
|
|
}
|
|
"#,
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn indents_middle_of_chain_call() {
|
|
type_char(
|
|
'.',
|
|
r#"
|
|
fn source_impl() {
|
|
let var = enum_defvariant_list().unwrap()
|
|
$0
|
|
.nth(92)
|
|
.unwrap();
|
|
}
|
|
"#,
|
|
r#"
|
|
fn source_impl() {
|
|
let var = enum_defvariant_list().unwrap()
|
|
.
|
|
.nth(92)
|
|
.unwrap();
|
|
}
|
|
"#,
|
|
);
|
|
type_char_noop(
|
|
'.',
|
|
r#"
|
|
fn source_impl() {
|
|
let var = enum_defvariant_list().unwrap()
|
|
$0
|
|
.nth(92)
|
|
.unwrap();
|
|
}
|
|
"#,
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn dont_indent_freestanding_dot() {
|
|
type_char_noop(
|
|
'.',
|
|
r#"
|
|
fn main() {
|
|
$0
|
|
}
|
|
"#,
|
|
);
|
|
type_char_noop(
|
|
'.',
|
|
r#"
|
|
fn main() {
|
|
$0
|
|
}
|
|
"#,
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn adds_space_after_return_type() {
|
|
type_char(
|
|
'>',
|
|
r#"
|
|
fn foo() -$0{ 92 }
|
|
"#,
|
|
r#"
|
|
fn foo() -> { 92 }
|
|
"#,
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn adds_closing_brace_for_expr() {
|
|
type_char(
|
|
'{',
|
|
r#"
|
|
fn f() { match () { _ => $0() } }
|
|
"#,
|
|
r#"
|
|
fn f() { match () { _ => {()} } }
|
|
"#,
|
|
);
|
|
type_char(
|
|
'{',
|
|
r#"
|
|
fn f() { $0() }
|
|
"#,
|
|
r#"
|
|
fn f() { {()} }
|
|
"#,
|
|
);
|
|
type_char(
|
|
'{',
|
|
r#"
|
|
fn f() { let x = $0(); }
|
|
"#,
|
|
r#"
|
|
fn f() { let x = {()}; }
|
|
"#,
|
|
);
|
|
type_char(
|
|
'{',
|
|
r#"
|
|
fn f() { let x = $0a.b(); }
|
|
"#,
|
|
r#"
|
|
fn f() { let x = {a.b()}; }
|
|
"#,
|
|
);
|
|
type_char(
|
|
'{',
|
|
r#"
|
|
const S: () = $0();
|
|
fn f() {}
|
|
"#,
|
|
r#"
|
|
const S: () = {()};
|
|
fn f() {}
|
|
"#,
|
|
);
|
|
type_char(
|
|
'{',
|
|
r#"
|
|
const S: () = $0a.b();
|
|
fn f() {}
|
|
"#,
|
|
r#"
|
|
const S: () = {a.b()};
|
|
fn f() {}
|
|
"#,
|
|
);
|
|
type_char(
|
|
'{',
|
|
r#"
|
|
fn f() {
|
|
match x {
|
|
0 => $0(),
|
|
1 => (),
|
|
}
|
|
}
|
|
"#,
|
|
r#"
|
|
fn f() {
|
|
match x {
|
|
0 => {()},
|
|
1 => (),
|
|
}
|
|
}
|
|
"#,
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn noop_in_string_literal() {
|
|
// Regression test for #9351
|
|
type_char_noop(
|
|
'{',
|
|
r##"
|
|
fn check_with(ra_fixture: &str, expect: Expect) {
|
|
let base = r#"
|
|
enum E { T(), R$0, C }
|
|
use self::E::X;
|
|
const Z: E = E::C;
|
|
mod m {}
|
|
asdasdasdasdasdasda
|
|
sdasdasdasdasdasda
|
|
sdasdasdasdasd
|
|
"#;
|
|
let actual = completion_list(&format!("{}\n{}", base, ra_fixture));
|
|
expect.assert_eq(&actual)
|
|
}
|
|
"##,
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn noop_in_item_position_with_macro() {
|
|
type_char_noop('{', r#"$0println!();"#);
|
|
type_char_noop(
|
|
'{',
|
|
r#"
|
|
fn main() $0println!("hello");
|
|
}"#,
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn adds_closing_brace_for_use_tree() {
|
|
type_char(
|
|
'{',
|
|
r#"
|
|
use some::$0Path;
|
|
"#,
|
|
r#"
|
|
use some::{Path};
|
|
"#,
|
|
);
|
|
type_char(
|
|
'{',
|
|
r#"
|
|
use some::{Path, $0Other};
|
|
"#,
|
|
r#"
|
|
use some::{Path, {Other}};
|
|
"#,
|
|
);
|
|
type_char(
|
|
'{',
|
|
r#"
|
|
use some::{$0Path, Other};
|
|
"#,
|
|
r#"
|
|
use some::{{Path}, Other};
|
|
"#,
|
|
);
|
|
type_char(
|
|
'{',
|
|
r#"
|
|
use some::path::$0to::Item;
|
|
"#,
|
|
r#"
|
|
use some::path::{to::Item};
|
|
"#,
|
|
);
|
|
type_char(
|
|
'{',
|
|
r#"
|
|
use some::$0path::to::Item;
|
|
"#,
|
|
r#"
|
|
use some::{path::to::Item};
|
|
"#,
|
|
);
|
|
type_char(
|
|
'{',
|
|
r#"
|
|
use $0some::path::to::Item;
|
|
"#,
|
|
r#"
|
|
use {some::path::to::Item};
|
|
"#,
|
|
);
|
|
type_char(
|
|
'{',
|
|
r#"
|
|
use some::path::$0to::{Item};
|
|
"#,
|
|
r#"
|
|
use some::path::{to::{Item}};
|
|
"#,
|
|
);
|
|
type_char(
|
|
'{',
|
|
r#"
|
|
use $0Thing as _;
|
|
"#,
|
|
r#"
|
|
use {Thing as _};
|
|
"#,
|
|
);
|
|
|
|
type_char_noop(
|
|
'{',
|
|
r#"
|
|
use some::pa$0th::to::Item;
|
|
"#,
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn adds_closing_angle_bracket_for_generic_args() {
|
|
type_char(
|
|
'<',
|
|
r#"
|
|
fn foo() {
|
|
bar::$0
|
|
}
|
|
"#,
|
|
r#"
|
|
fn foo() {
|
|
bar::<$0>
|
|
}
|
|
"#,
|
|
);
|
|
|
|
type_char(
|
|
'<',
|
|
r#"
|
|
fn foo(bar: &[u64]) {
|
|
bar.iter().collect::$0();
|
|
}
|
|
"#,
|
|
r#"
|
|
fn foo(bar: &[u64]) {
|
|
bar.iter().collect::<$0>();
|
|
}
|
|
"#,
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn adds_closing_angle_bracket_for_generic_params() {
|
|
type_char(
|
|
'<',
|
|
r#"
|
|
fn foo$0() {}
|
|
"#,
|
|
r#"
|
|
fn foo<$0>() {}
|
|
"#,
|
|
);
|
|
type_char(
|
|
'<',
|
|
r#"
|
|
fn foo$0
|
|
"#,
|
|
r#"
|
|
fn foo<$0>
|
|
"#,
|
|
);
|
|
type_char(
|
|
'<',
|
|
r#"
|
|
struct Foo$0 {}
|
|
"#,
|
|
r#"
|
|
struct Foo<$0> {}
|
|
"#,
|
|
);
|
|
type_char(
|
|
'<',
|
|
r#"
|
|
struct Foo$0();
|
|
"#,
|
|
r#"
|
|
struct Foo<$0>();
|
|
"#,
|
|
);
|
|
type_char(
|
|
'<',
|
|
r#"
|
|
struct Foo$0
|
|
"#,
|
|
r#"
|
|
struct Foo<$0>
|
|
"#,
|
|
);
|
|
type_char(
|
|
'<',
|
|
r#"
|
|
enum Foo$0
|
|
"#,
|
|
r#"
|
|
enum Foo<$0>
|
|
"#,
|
|
);
|
|
type_char(
|
|
'<',
|
|
r#"
|
|
trait Foo$0
|
|
"#,
|
|
r#"
|
|
trait Foo<$0>
|
|
"#,
|
|
);
|
|
type_char(
|
|
'<',
|
|
r#"
|
|
type Foo$0 = Bar;
|
|
"#,
|
|
r#"
|
|
type Foo<$0> = Bar;
|
|
"#,
|
|
);
|
|
type_char(
|
|
'<',
|
|
r#"
|
|
impl$0 Foo {}
|
|
"#,
|
|
r#"
|
|
impl<$0> Foo {}
|
|
"#,
|
|
);
|
|
type_char(
|
|
'<',
|
|
r#"
|
|
impl<T> Foo$0 {}
|
|
"#,
|
|
r#"
|
|
impl<T> Foo<$0> {}
|
|
"#,
|
|
);
|
|
type_char(
|
|
'<',
|
|
r#"
|
|
impl Foo$0 {}
|
|
"#,
|
|
r#"
|
|
impl Foo<$0> {}
|
|
"#,
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn dont_add_closing_angle_bracket_for_comparison() {
|
|
type_char_noop(
|
|
'<',
|
|
r#"
|
|
fn main() {
|
|
42$0
|
|
}
|
|
"#,
|
|
);
|
|
type_char_noop(
|
|
'<',
|
|
r#"
|
|
fn main() {
|
|
42 $0
|
|
}
|
|
"#,
|
|
);
|
|
type_char_noop(
|
|
'<',
|
|
r#"
|
|
fn main() {
|
|
let foo = 42;
|
|
foo $0
|
|
}
|
|
"#,
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn dont_add_closing_angle_bracket_if_it_is_already_there() {
|
|
type_char_noop(
|
|
'<',
|
|
r#"
|
|
fn foo() {
|
|
bar::$0>
|
|
}
|
|
"#,
|
|
);
|
|
type_char_noop(
|
|
'<',
|
|
r#"
|
|
fn foo(bar: &[u64]) {
|
|
bar.iter().collect::$0 >();
|
|
}
|
|
"#,
|
|
);
|
|
type_char_noop(
|
|
'<',
|
|
r#"
|
|
fn foo$0>() {}
|
|
"#,
|
|
);
|
|
type_char_noop(
|
|
'<',
|
|
r#"
|
|
fn foo$0>
|
|
"#,
|
|
);
|
|
type_char_noop(
|
|
'<',
|
|
r#"
|
|
struct Foo$0> {}
|
|
"#,
|
|
);
|
|
type_char_noop(
|
|
'<',
|
|
r#"
|
|
struct Foo$0>();
|
|
"#,
|
|
);
|
|
type_char_noop(
|
|
'<',
|
|
r#"
|
|
struct Foo$0>
|
|
"#,
|
|
);
|
|
type_char_noop(
|
|
'<',
|
|
r#"
|
|
enum Foo$0>
|
|
"#,
|
|
);
|
|
type_char_noop(
|
|
'<',
|
|
r#"
|
|
trait Foo$0>
|
|
"#,
|
|
);
|
|
type_char_noop(
|
|
'<',
|
|
r#"
|
|
type Foo$0> = Bar;
|
|
"#,
|
|
);
|
|
type_char_noop(
|
|
'<',
|
|
r#"
|
|
impl$0> Foo {}
|
|
"#,
|
|
);
|
|
type_char_noop(
|
|
'<',
|
|
r#"
|
|
impl<T> Foo$0> {}
|
|
"#,
|
|
);
|
|
type_char_noop(
|
|
'<',
|
|
r#"
|
|
impl Foo$0> {}
|
|
"#,
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn regression_629() {
|
|
type_char_noop(
|
|
'.',
|
|
r#"
|
|
fn foo() {
|
|
CompletionItem::new(
|
|
CompletionKind::Reference,
|
|
ctx.source_range(),
|
|
field.name().to_string(),
|
|
)
|
|
.foo()
|
|
$0
|
|
}
|
|
"#,
|
|
);
|
|
type_char_noop(
|
|
'.',
|
|
r#"
|
|
fn foo() {
|
|
CompletionItem::new(
|
|
CompletionKind::Reference,
|
|
ctx.source_range(),
|
|
field.name().to_string(),
|
|
)
|
|
$0
|
|
}
|
|
"#,
|
|
);
|
|
}
|
|
}
|