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feat: make join lines behavior configurable

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closes #9492
This commit is contained in:
Aleksey Kladov 2021-07-05 23:31:44 +03:00
parent 91bfa4b154
commit b8a6ea5ab5
6 changed files with 171 additions and 84 deletions
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186
crates/ide/src/join_lines.rs
View file

@ -12,10 +12,20 @@ use syntax::{
use text_edit::{TextEdit, TextEditBuilder};
pub struct JoinLinesConfig {
pub join_else_if: bool,
pub remove_trailing_comma: bool,
pub unwrap_trivial_blocks: bool,
}
// Feature: Join Lines
//
// Join selected lines into one, smartly fixing up whitespace, trailing commas, and braces.
//
// See
// https://user-images.githubusercontent.com/1711539/124515923-4504e800-dde9-11eb-8d58-d97945a1a785.gif[this gif]
// for the cases handled specially by joined lines.
//
// |===
// | Editor | Action Name
//
@ -23,7 +33,11 @@ use text_edit::{TextEdit, TextEditBuilder};
// |===
//
// image::https://user-images.githubusercontent.com/48062697/113020661-b6922200-917a-11eb-87c4-b75acc028f11.gif[]
pub(crate) fn join_lines(file: &SourceFile, range: TextRange) -> TextEdit {
pub(crate) fn join_lines(
config: &JoinLinesConfig,
file: &SourceFile,
range: TextRange,
) -> TextEdit {
let range = if range.is_empty() {
let syntax = file.syntax();
let text = syntax.text().slice(range.start()..);
@ -40,15 +54,20 @@ pub(crate) fn join_lines(file: &SourceFile, range: TextRange) -> TextEdit {
match file.syntax().covering_element(range) {
NodeOrToken::Node(node) => {
for token in node.descendants_with_tokens().filter_map(|it| it.into_token()) {
remove_newlines(&mut edit, &token, range)
remove_newlines(config, &mut edit, &token, range)
}
}
NodeOrToken::Token(token) => remove_newlines(&mut edit, &token, range),
NodeOrToken::Token(token) => remove_newlines(config, &mut edit, &token, range),
};
edit.finish()
}
fn remove_newlines(edit: &mut TextEditBuilder, token: &SyntaxToken, range: TextRange) {
fn remove_newlines(
config: &JoinLinesConfig,
edit: &mut TextEditBuilder,
token: &SyntaxToken,
range: TextRange,
) {
let intersection = match range.intersect(token.text_range()) {
Some(range) => range,
None => return,
@ -60,12 +79,17 @@ fn remove_newlines(edit: &mut TextEditBuilder, token: &SyntaxToken, range: TextR
let pos: TextSize = (pos as u32).into();
let offset = token.text_range().start() + range.start() + pos;
if !edit.invalidates_offset(offset) {
remove_newline(edit, token, offset);
remove_newline(config, edit, token, offset);
}
}
}
fn remove_newline(edit: &mut TextEditBuilder, token: &SyntaxToken, offset: TextSize) {
fn remove_newline(
config: &JoinLinesConfig,
edit: &mut TextEditBuilder,
token: &SyntaxToken,
offset: TextSize,
) {
if token.kind() != WHITESPACE || token.text().bytes().filter(|&b| b == b'\n').count() != 1 {
let n_spaces_after_line_break = {
let suff = &token.text()[TextRange::new(
@ -102,24 +126,66 @@ fn remove_newline(edit: &mut TextEditBuilder, token: &SyntaxToken, offset: TextS
_ => return,
};
if is_trailing_comma(prev.kind(), next.kind()) {
// Removes: trailing comma, newline (incl. surrounding whitespace)
edit.delete(TextRange::new(prev.text_range().start(), token.text_range().end()));
return;
if config.remove_trailing_comma && prev.kind() == T![,] {
match next.kind() {
T![')'] | T![']'] => {
// Removes: trailing comma, newline (incl. surrounding whitespace)
edit.delete(TextRange::new(prev.text_range().start(), token.text_range().end()));
return;
}
T!['}'] => {
// Removes: comma, newline (incl. surrounding whitespace)
let space = if let Some(left) = prev.prev_sibling_or_token() {
compute_ws(left.kind(), next.kind())
} else {
" "
};
edit.replace(
TextRange::new(prev.text_range().start(), token.text_range().end()),
space.to_string(),
);
return;
}
_ => (),
}
}
if prev.kind() == T![,] && next.kind() == T!['}'] {
// Removes: comma, newline (incl. surrounding whitespace)
let space = if let Some(left) = prev.prev_sibling_or_token() {
compute_ws(left.kind(), next.kind())
} else {
" "
};
edit.replace(
TextRange::new(prev.text_range().start(), token.text_range().end()),
space.to_string(),
);
return;
if config.join_else_if {
if let (Some(prev), Some(_next)) = (as_if_expr(&prev), as_if_expr(&next)) {
match prev.else_token() {
Some(_) => cov_mark::hit!(join_two_ifs_with_existing_else),
None => {
cov_mark::hit!(join_two_ifs);
edit.replace(token.text_range(), " else ".to_string());
return;
}
}
}
}
if config.unwrap_trivial_blocks {
// Special case that turns something like:
//
// ```
// my_function({$0
// <some-expr>
// })
// ```
//
// into `my_function(<some-expr>)`
if join_single_expr_block(edit, token).is_some() {
return;
}
// ditto for
//
// ```
// use foo::{$0
// bar
// };
// ```
if join_single_use_tree(edit, token).is_some() {
return;
}
}
if let (Some(_), Some(next)) = (
@ -134,40 +200,6 @@ fn remove_newline(edit: &mut TextEditBuilder, token: &SyntaxToken, offset: TextS
return;
}
if let (Some(prev), Some(_next)) = (as_if_expr(&prev), as_if_expr(&next)) {
match prev.else_token() {
Some(_) => cov_mark::hit!(join_two_ifs_with_existing_else),
None => {
cov_mark::hit!(join_two_ifs);
edit.replace(token.text_range(), " else ".to_string());
return;
}
}
}
// Special case that turns something like:
//
// ```
// my_function({$0
// <some-expr>
// })
// ```
//
// into `my_function(<some-expr>)`
if join_single_expr_block(edit, token).is_some() {
return;
}
// ditto for
//
// ```
// use foo::{$0
// bar
// };
// ```
if join_single_use_tree(edit, token).is_some() {
return;
}
// Remove newline but add a computed amount of whitespace characters
edit.replace(token.text_range(), compute_ws(prev.kind(), next.kind()).to_string());
}
@ -208,10 +240,6 @@ fn join_single_use_tree(edit: &mut TextEditBuilder, token: &SyntaxToken) -> Opti
Some(())
}
fn is_trailing_comma(left: SyntaxKind, right: SyntaxKind) -> bool {
matches!((left, right), (T![,], T![')'] | T![']']))
}
fn as_if_expr(element: &SyntaxElement) -> Option<ast::IfExpr> {
let mut node = element.as_node()?.clone();
if let Some(stmt) = ast::ExprStmt::cast(node.clone()) {
@ -251,11 +279,17 @@ mod tests {
use super::*;
fn check_join_lines(ra_fixture_before: &str, ra_fixture_after: &str) {
let config = JoinLinesConfig {
join_else_if: true,
remove_trailing_comma: true,
unwrap_trivial_blocks: true,
};
let (before_cursor_pos, before) = extract_offset(ra_fixture_before);
let file = SourceFile::parse(&before).ok().unwrap();
let range = TextRange::empty(before_cursor_pos);
let result = join_lines(&file, range);
let result = join_lines(&config, &file, range);
let actual = {
let mut actual = before;
@ -269,6 +303,24 @@ mod tests {
assert_eq_text!(ra_fixture_after, &actual);
}
fn check_join_lines_sel(ra_fixture_before: &str, ra_fixture_after: &str) {
let config = JoinLinesConfig {
join_else_if: true,
remove_trailing_comma: true,
unwrap_trivial_blocks: true,
};
let (sel, before) = extract_range(ra_fixture_before);
let parse = SourceFile::parse(&before);
let result = join_lines(&config, &parse.tree(), sel);
let actual = {
let mut actual = before;
result.apply(&mut actual);
actual
};
assert_eq_text!(ra_fixture_after, &actual);
}
#[test]
fn test_join_lines_comma() {
check_join_lines(
@ -657,18 +709,6 @@ fn foo() {
);
}
fn check_join_lines_sel(ra_fixture_before: &str, ra_fixture_after: &str) {
let (sel, before) = extract_range(ra_fixture_before);
let parse = SourceFile::parse(&before);
let result = join_lines(&parse.tree(), sel);
let actual = {
let mut actual = before;
result.apply(&mut actual);
actual
};
assert_eq_text!(ra_fixture_after, &actual);
}
#[test]
fn test_join_lines_selection_fn_args() {
check_join_lines_sel(

14
crates/ide/src/lib.rs
View file

@ -57,12 +57,11 @@ mod view_item_tree;
use std::sync::Arc;
use cfg::CfgOptions;
use ide_db::base_db::{
salsa::{self, ParallelDatabase},
Env, FileLoader, FileSet, SourceDatabase, VfsPath,
};
use ide_db::{
base_db::{
salsa::{self, ParallelDatabase},
Env, FileLoader, FileSet, SourceDatabase, VfsPath,
},
symbol_index::{self, FileSymbol},
LineIndexDatabase,
};
@ -80,6 +79,7 @@ pub use crate::{
highlight_related::HighlightedRange,
hover::{HoverAction, HoverConfig, HoverDocFormat, HoverGotoTypeData, HoverResult},
inlay_hints::{InlayHint, InlayHintsConfig, InlayKind},
join_lines::JoinLinesConfig,
markup::Markup,
move_item::Direction,
prime_caches::PrimeCachesProgress,
@ -308,10 +308,10 @@ impl Analysis {
/// Returns an edit to remove all newlines in the range, cleaning up minor
/// stuff like trailing commas.
pub fn join_lines(&self, frange: FileRange) -> Cancellable<TextEdit> {
pub fn join_lines(&self, config: &JoinLinesConfig, frange: FileRange) -> Cancellable<TextEdit> {
self.with_db(|db| {
let parse = db.parse(frange.file_id);
join_lines::join_lines(&parse.tree(), frange.range)
join_lines::join_lines(&config, &parse.tree(), frange.range)
})
}

16
crates/rust-analyzer/src/config.rs
View file

@ -12,7 +12,7 @@ use std::{ffi::OsString, iter, path::PathBuf};
use flycheck::FlycheckConfig;
use ide::{
AssistConfig, CompletionConfig, DiagnosticsConfig, HoverConfig, HoverDocFormat,
InlayHintsConfig,
InlayHintsConfig, JoinLinesConfig,
};
use ide_db::helpers::{
insert_use::{ImportGranularity, InsertUseConfig, PrefixKind},
@ -186,6 +186,13 @@ config_data! {
/// Whether to show inlay type hints for variables.
inlayHints_typeHints: bool = "true",
/// Join lines inserts else between consecutive ifs.
joinLines_joinElseIf: bool = "true",
/// Join lines removes trailing commas.
joinLines_removeTrailingComma: bool = "true",
/// Join lines unwraps trivial blocks.
joinLines_unwrapTrivialBlock: bool = "true",
/// Whether to show `Debug` lens. Only applies when
/// `#rust-analyzer.lens.enable#` is set.
lens_debug: bool = "true",
@ -752,6 +759,13 @@ impl Config {
insert_use: self.insert_use_config(),
}
}
pub fn join_lines(&self) -> JoinLinesConfig {
JoinLinesConfig {
join_else_if: self.data.joinLines_joinElseIf,
remove_trailing_comma: self.data.joinLines_removeTrailingComma,
unwrap_trivial_blocks: self.data.joinLines_unwrapTrivialBlock,
}
}
pub fn call_info_full(&self) -> bool {
self.data.callInfo_full
}

9
crates/rust-analyzer/src/handlers.rs
View file

@ -233,12 +233,15 @@ pub(crate) fn handle_join_lines(
params: lsp_ext::JoinLinesParams,
) -> Result<Vec<lsp_types::TextEdit>> {
let _p = profile::span("handle_join_lines");
let config = snap.config.join_lines();
let file_id = from_proto::file_id(&snap, &params.text_document.uri)?;
let line_index = snap.file_line_index(file_id)?;
let mut res = TextEdit::default();
for range in params.ranges {
let range = from_proto::text_range(&line_index, range);
let edit = snap.analysis.join_lines(FileRange { file_id, range })?;
let edit = snap.analysis.join_lines(&config, FileRange { file_id, range })?;
match res.union(edit) {
Ok(()) => (),
Err(_edit) => {
@ -246,8 +249,8 @@ pub(crate) fn handle_join_lines(
}
}
}
let res = to_proto::text_edit_vec(&line_index, res);
Ok(res)
Ok(to_proto::text_edit_vec(&line_index, res))
}
pub(crate) fn handle_on_enter(

15
docs/user/generated_config.adoc
View file

@ -281,6 +281,21 @@ site.
--
Whether to show inlay type hints for variables.
--
[[rust-analyzer.joinLines.joinElseIf]]rust-analyzer.joinLines.joinElseIf (default: `true`)::
+
--
Join lines inserts else between consecutive ifs.
--
[[rust-analyzer.joinLines.removeTrailingComma]]rust-analyzer.joinLines.removeTrailingComma (default: `true`)::
+
--
Join lines removes trailing commas.
--
[[rust-analyzer.joinLines.unwrapTrivialBlock]]rust-analyzer.joinLines.unwrapTrivialBlock (default: `true`)::
+
--
Join lines unwraps trivial blocks.
--
[[rust-analyzer.lens.debug]]rust-analyzer.lens.debug (default: `true`)::
+
--

15
editors/code/package.json
View file

@ -724,6 +724,21 @@
"default": true,
"type": "boolean"
},
"rust-analyzer.joinLines.joinElseIf": {
"markdownDescription": "Join lines inserts else between consecutive ifs.",
"default": true,
"type": "boolean"
},
"rust-analyzer.joinLines.removeTrailingComma": {
"markdownDescription": "Join lines removes trailing commas.",
"default": true,
"type": "boolean"
},
"rust-analyzer.joinLines.unwrapTrivialBlock": {
"markdownDescription": "Join lines unwraps trivial blocks.",
"default": true,
"type": "boolean"
},
"rust-analyzer.lens.debug": {
"markdownDescription": "Whether to show `Debug` lens. Only applies when\n`#rust-analyzer.lens.enable#` is set.",
"default": true,