Unnamed repository; edit this file 'description' to name the repository.
Diffstat (limited to 'crates/ide-assists/src/handlers/extract_variable.rs')
| -rw-r--r-- | crates/ide-assists/src/handlers/extract_variable.rs | 101 |
1 files changed, 35 insertions, 66 deletions
diff --git a/crates/ide-assists/src/handlers/extract_variable.rs b/crates/ide-assists/src/handlers/extract_variable.rs index a43a4b5e1a..61dc72e0b3 100644 --- a/crates/ide-assists/src/handlers/extract_variable.rs +++ b/crates/ide-assists/src/handlers/extract_variable.rs @@ -1,8 +1,12 @@ use hir::TypeInfo; use ide_db::syntax_helpers::suggest_name; use syntax::{ - ast::{self, edit::IndentLevel, edit_in_place::Indent, make, AstNode, HasName}, - ted, NodeOrToken, + ast::{ + self, edit::IndentLevel, edit_in_place::Indent, make, syntax_factory::SyntaxFactory, + AstNode, + }, + syntax_editor::Position, + NodeOrToken, SyntaxKind::{BLOCK_EXPR, BREAK_EXPR, COMMENT, LOOP_EXPR, MATCH_GUARD, PATH_EXPR, RETURN_EXPR}, SyntaxNode, T, }; @@ -105,39 +109,46 @@ pub(crate) fn extract_variable(acc: &mut Assists, ctx: &AssistContext<'_>) -> Op ), }; + let make = SyntaxFactory::new(); + let mut editor = edit.make_editor(&expr_replace); + + let pat_name = make.name(&var_name); + let name_expr = make.expr_path(make::ext::ident_path(&var_name)); + + if let Some(cap) = ctx.config.snippet_cap { + let tabstop = edit.make_tabstop_before(cap); + editor.add_annotation(pat_name.syntax().clone(), tabstop); + } + let ident_pat = match parent { Some(ast::Expr::RefExpr(expr)) if expr.mut_token().is_some() => { - make::ident_pat(false, true, make::name(&var_name)) + make.ident_pat(false, true, pat_name) } _ if needs_adjust && !needs_ref && ty.as_ref().is_some_and(|ty| ty.is_mutable_reference()) => { - make::ident_pat(false, true, make::name(&var_name)) + make.ident_pat(false, true, pat_name) } - _ => make::ident_pat(false, false, make::name(&var_name)), + _ => make.ident_pat(false, false, pat_name), }; let to_extract_no_ref = match ty.as_ref().filter(|_| needs_ref) { Some(receiver_type) if receiver_type.is_mutable_reference() => { - make::expr_ref(to_extract_no_ref, true) + make.expr_ref(to_extract_no_ref, true) } Some(receiver_type) if receiver_type.is_reference() => { - make::expr_ref(to_extract_no_ref, false) + make.expr_ref(to_extract_no_ref, false) } _ => to_extract_no_ref, }; - let expr_replace = edit.make_syntax_mut(expr_replace); - let let_stmt = - make::let_stmt(ident_pat.into(), None, Some(to_extract_no_ref)).clone_for_update(); - let name_expr = make::expr_path(make::ext::ident_path(&var_name)).clone_for_update(); + let let_stmt = make.let_stmt(ident_pat.into(), None, Some(to_extract_no_ref)); match anchor { Anchor::Before(place) => { let prev_ws = place.prev_sibling_or_token().and_then(|it| it.into_token()); let indent_to = IndentLevel::from_node(&place); - let insert_place = edit.make_syntax_mut(place); // Adjust ws to insert depending on if this is all inline or on separate lines let trailing_ws = if prev_ws.is_some_and(|it| it.text().starts_with('\n')) { @@ -146,37 +157,20 @@ pub(crate) fn extract_variable(acc: &mut Assists, ctx: &AssistContext<'_>) -> Op " ".to_owned() }; - ted::insert_all_raw( - ted::Position::before(insert_place), + editor.insert_all( + Position::before(place), vec![ let_stmt.syntax().clone().into(), make::tokens::whitespace(&trailing_ws).into(), ], ); - ted::replace(expr_replace, name_expr.syntax()); - - if let Some(cap) = ctx.config.snippet_cap { - if let Some(ast::Pat::IdentPat(ident_pat)) = let_stmt.pat() { - if let Some(name) = ident_pat.name() { - edit.add_tabstop_before(cap, name); - } - } - } + editor.replace(expr_replace, name_expr.syntax()); } Anchor::Replace(stmt) => { cov_mark::hit!(test_extract_var_expr_stmt); - let stmt_replace = edit.make_mut(stmt); - ted::replace(stmt_replace.syntax(), let_stmt.syntax()); - - if let Some(cap) = ctx.config.snippet_cap { - if let Some(ast::Pat::IdentPat(ident_pat)) = let_stmt.pat() { - if let Some(name) = ident_pat.name() { - edit.add_tabstop_before(cap, name); - } - } - } + editor.replace(stmt.syntax(), let_stmt.syntax()); } Anchor::WrapInBlock(to_wrap) => { let indent_to = to_wrap.indent_level(); @@ -184,47 +178,22 @@ pub(crate) fn extract_variable(acc: &mut Assists, ctx: &AssistContext<'_>) -> Op let block = if to_wrap.syntax() == &expr_replace { // Since `expr_replace` is the same that needs to be wrapped in a block, // we can just directly replace it with a block - let block = - make::block_expr([let_stmt.into()], Some(name_expr)).clone_for_update(); - ted::replace(expr_replace, block.syntax()); - - block + make.block_expr([let_stmt.into()], Some(name_expr)) } else { - // `expr_replace` is a descendant of `to_wrap`, so both steps need to be - // handled separately, otherwise we wrap the wrong expression - let to_wrap = edit.make_mut(to_wrap); - - // Replace the target expr first so that we don't need to find where - // `expr_replace` is in the wrapped `to_wrap` - ted::replace(expr_replace, name_expr.syntax()); - - // Wrap `to_wrap` in a block - let block = make::block_expr([let_stmt.into()], Some(to_wrap.clone())) - .clone_for_update(); - ted::replace(to_wrap.syntax(), block.syntax()); - - block + // `expr_replace` is a descendant of `to_wrap`, so we just replace it with `name_expr`. + editor.replace(expr_replace, name_expr.syntax()); + make.block_expr([let_stmt.into()], Some(to_wrap.clone())) }; - if let Some(cap) = ctx.config.snippet_cap { - // Adding a tabstop to `name` requires finding the let stmt again, since - // the existing `let_stmt` is not actually added to the tree - let pat = block.statements().find_map(|stmt| { - let ast::Stmt::LetStmt(let_stmt) = stmt else { return None }; - let_stmt.pat() - }); - - if let Some(ast::Pat::IdentPat(ident_pat)) = pat { - if let Some(name) = ident_pat.name() { - edit.add_tabstop_before(cap, name); - } - } - } + editor.replace(to_wrap.syntax(), block.syntax()); // fixup indentation of block block.indent(indent_to); } } + + editor.add_mappings(make.finish_with_mappings()); + edit.add_file_edits(ctx.file_id(), editor); edit.rename(); }, ) |