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Diffstat (limited to 'crates/syntax/src/ast/edit_in_place.rs')
| -rw-r--r-- | crates/syntax/src/ast/edit_in_place.rs | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/crates/syntax/src/ast/edit_in_place.rs b/crates/syntax/src/ast/edit_in_place.rs index c9944b75b0..bc9c54d0b7 100644 --- a/crates/syntax/src/ast/edit_in_place.rs +++ b/crates/syntax/src/ast/edit_in_place.rs @@ -627,6 +627,8 @@ impl ast::Impl { } impl ast::AssocItemList { + /// Adds a new associated item after all of the existing associated items. + /// /// Attention! This function does align the first line of `item` with respect to `self`, /// but it does _not_ change indentation of other lines (if any). pub fn add_item(&self, item: ast::AssocItem) { @@ -650,6 +652,46 @@ impl ast::AssocItemList { ]; ted::insert_all(position, elements); } + + /// Adds a new associated item at the start of the associated item list. + /// + /// Attention! This function does align the first line of `item` with respect to `self`, + /// but it does _not_ change indentation of other lines (if any). + pub fn add_item_at_start(&self, item: ast::AssocItem) { + match self.assoc_items().next() { + Some(first_item) => { + let indent = IndentLevel::from_node(first_item.syntax()); + let before = Position::before(first_item.syntax()); + + ted::insert_all( + before, + vec![ + item.syntax().clone().into(), + make::tokens::whitespace(&format!("\n\n{indent}")).into(), + ], + ) + } + None => { + let (indent, position, whitespace) = match self.l_curly_token() { + Some(l_curly) => { + normalize_ws_between_braces(self.syntax()); + (IndentLevel::from_token(&l_curly) + 1, Position::after(&l_curly), "\n") + } + None => (IndentLevel::single(), Position::first_child_of(self.syntax()), ""), + }; + + let mut elements = vec![]; + + // Avoid pushing an empty whitespace token + if !indent.is_zero() || !whitespace.is_empty() { + elements.push(make::tokens::whitespace(&format!("{whitespace}{indent}")).into()) + } + elements.push(item.syntax().clone().into()); + + ted::insert_all(position, elements) + } + }; + } } impl ast::Fn { |