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authorJonas Schievink <[email protected]>2021-05-10 14:10:56 +0100
committerJonas Schievink <[email protected]>2021-05-10 14:10:56 +0100
commite718c6b3e89bfca3ea0805a603ff1d4f60517316 (patch)
treecd2aafb81ba93f077092bd1cbf1e2b6fdea5a39d /crates/ide/src
parent17038756baeaea2c66fc300ff395e4c4e8a18ee8 (diff)
feat: auto-indent use tree lists
Diffstat (limited to 'crates/ide/src')
-rw-r--r--crates/ide/src/typing/on_enter.rs115
1 files changed, 115 insertions, 0 deletions
diff --git a/crates/ide/src/typing/on_enter.rs b/crates/ide/src/typing/on_enter.rs
index 7d2db201a..81c4d95b1 100644
--- a/crates/ide/src/typing/on_enter.rs
+++ b/crates/ide/src/typing/on_enter.rs
@@ -54,6 +54,14 @@ pub(crate) fn on_enter(db: &RootDatabase, position: FilePosition) -> Option<Text
54 cov_mark::hit!(indent_block_contents); 54 cov_mark::hit!(indent_block_contents);
55 return Some(edit); 55 return Some(edit);
56 } 56 }
57
58 // Typing enter after the `{` of a use tree list.
59 if let Some(edit) = find_node_at_offset(file.syntax(), position.offset - TextSize::of('{'))
60 .and_then(|list| on_enter_in_use_tree_list(list, position))
61 {
62 cov_mark::hit!(indent_block_contents);
63 return Some(edit);
64 }
57 } 65 }
58 66
59 None 67 None
@@ -111,6 +119,21 @@ fn on_enter_in_block(block: ast::BlockExpr, position: FilePosition) -> Option<Te
111 Some(edit) 119 Some(edit)
112} 120}
113 121
122fn on_enter_in_use_tree_list(list: ast::UseTreeList, position: FilePosition) -> Option<TextEdit> {
123 if list.syntax().text().contains_char('\n') {
124 return None;
125 }
126
127 let indent = IndentLevel::from_node(list.syntax());
128 let mut edit = TextEdit::insert(position.offset, format!("\n{}$0", indent + 1));
129 edit.union(TextEdit::insert(
130 list.r_curly_token()?.text_range().start(),
131 format!("\n{}", indent),
132 ))
133 .ok()?;
134 Some(edit)
135}
136
114fn block_contents(block: &ast::BlockExpr) -> Option<SyntaxNode> { 137fn block_contents(block: &ast::BlockExpr) -> Option<SyntaxNode> {
115 let mut node = block.tail_expr().map(|e| e.syntax().clone()); 138 let mut node = block.tail_expr().map(|e| e.syntax().clone());
116 139
@@ -484,4 +507,96 @@ fn f() {$0
484 "#, 507 "#,
485 ); 508 );
486 } 509 }
510
511 #[test]
512 fn indents_use_tree_list() {
513 do_check(
514 r#"
515use crate::{$0};
516 "#,
517 r#"
518use crate::{
519 $0
520};
521 "#,
522 );
523 do_check(
524 r#"
525use crate::{$0Object, path::to::OtherThing};
526 "#,
527 r#"
528use crate::{
529 $0Object, path::to::OtherThing
530};
531 "#,
532 );
533 do_check(
534 r#"
535use {crate::{$0Object, path::to::OtherThing}};
536 "#,
537 r#"
538use {crate::{
539 $0Object, path::to::OtherThing
540}};
541 "#,
542 );
543 do_check(
544 r#"
545use {
546 crate::{$0Object, path::to::OtherThing}
547};
548 "#,
549 r#"
550use {
551 crate::{
552 $0Object, path::to::OtherThing
553 }
554};
555 "#,
556 );
557 }
558
559 #[test]
560 fn does_not_indent_use_tree_list_when_not_at_curly_brace() {
561 do_check_noop(
562 r#"
563use path::{Thing$0};
564 "#,
565 );
566 }
567
568 #[test]
569 fn does_not_indent_use_tree_list_without_curly_braces() {
570 do_check_noop(
571 r#"
572use path::Thing$0;
573 "#,
574 );
575 do_check_noop(
576 r#"
577use path::$0Thing;
578 "#,
579 );
580 do_check_noop(
581 r#"
582use path::Thing$0};
583 "#,
584 );
585 do_check_noop(
586 r#"
587use path::{$0Thing;
588 "#,
589 );
590 }
591
592 #[test]
593 fn does_not_indent_multiline_use_tree_list() {
594 do_check_noop(
595 r#"
596use path::{$0
597 Thing
598};
599 "#,
600 );
601 }
487} 602}