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Migrate `extract_type_alias` to mutable ast
| -rw-r--r-- | crates/ide-assists/src/handlers/extract_type_alias.rs | 49 | ||||
| -rw-r--r-- | crates/syntax/src/ast/make.rs | 6 |
2 files changed, 31 insertions, 24 deletions
diff --git a/crates/ide-assists/src/handlers/extract_type_alias.rs b/crates/ide-assists/src/handlers/extract_type_alias.rs index b310c2db9f..71b45d88cb 100644 --- a/crates/ide-assists/src/handlers/extract_type_alias.rs +++ b/crates/ide-assists/src/handlers/extract_type_alias.rs @@ -1,6 +1,9 @@ use either::Either; use ide_db::syntax_helpers::node_ext::walk_ty; -use syntax::ast::{self, edit::IndentLevel, make, AstNode, HasGenericParams, HasName}; +use syntax::{ + ast::{self, edit::IndentLevel, make, AstNode, HasGenericParams, HasName}, + ted, +}; use crate::{AssistContext, AssistId, AssistKind, Assists}; @@ -34,14 +37,16 @@ pub(crate) fn extract_type_alias(acc: &mut Assists, ctx: &AssistContext<'_>) -> || item.syntax(), |impl_| impl_.as_ref().either(AstNode::syntax, AstNode::syntax), ); - let insert_pos = node.text_range().start(); let target = ty.syntax().text_range(); acc.add( AssistId("extract_type_alias", AssistKind::RefactorExtract), "Extract type as type alias", target, - |builder| { + |edit| { + let node = edit.make_syntax_mut(node.clone()); + let target_ty = edit.make_mut(ty.clone()); + let mut known_generics = match item.generic_param_list() { Some(it) => it.generic_params().collect(), None => Vec::new(), @@ -56,27 +61,29 @@ pub(crate) fn extract_type_alias(acc: &mut Assists, ctx: &AssistContext<'_>) -> let generic_params = generics.map(|it| make::generic_param_list(it.into_iter().cloned())); + // Replace original type with the alias let ty_args = generic_params .as_ref() .map_or(String::new(), |it| it.to_generic_args().to_string()); - let replacement = format!("Type{ty_args}"); - builder.replace(target, replacement); - - let indent = IndentLevel::from_node(node); - let generic_params = generic_params.map_or(String::new(), |it| it.to_string()); - match ctx.config.snippet_cap { - Some(cap) => { - builder.insert_snippet( - cap, - insert_pos, - format!("type $0Type{generic_params} = {ty};\n\n{indent}"), - ); - } - None => { - builder.insert( - insert_pos, - format!("type Type{generic_params} = {ty};\n\n{indent}"), - ); + // FIXME: replace with a `ast::make` constructor + let new_ty = make::ty(&format!("Type{ty_args}")).clone_for_update(); + ted::replace(target_ty.syntax(), new_ty.syntax()); + + // Insert new alias + let indent = IndentLevel::from_node(&node); + let ty_alias = make::ty_alias("Type", generic_params, None, None, Some((ty, None))) + .clone_for_update(); + ted::insert_all( + ted::Position::before(node), + vec![ + ty_alias.syntax().clone().into(), + make::tokens::whitespace(&format!("\n\n{indent}")).into(), + ], + ); + + if let Some(cap) = ctx.config.snippet_cap { + if let Some(name) = ty_alias.name() { + edit.add_tabstop_before(cap, name); } } }, diff --git a/crates/syntax/src/ast/make.rs b/crates/syntax/src/ast/make.rs index a07561e79a..3c2b7e56b0 100644 --- a/crates/syntax/src/ast/make.rs +++ b/crates/syntax/src/ast/make.rs @@ -166,7 +166,7 @@ pub fn ty_alias( assignment: Option<(ast::Type, Option<ast::WhereClause>)>, ) -> ast::TypeAlias { let mut s = String::new(); - s.push_str(&format!("type {} ", ident)); + s.push_str(&format!("type {}", ident)); if let Some(list) = generic_param_list { s.push_str(&list.to_string()); @@ -182,9 +182,9 @@ pub fn ty_alias( if let Some(exp) = assignment { if let Some(cl) = exp.1 { - s.push_str(&format!("= {} {}", &exp.0.to_string(), &cl.to_string())); + s.push_str(&format!(" = {} {}", &exp.0.to_string(), &cl.to_string())); } else { - s.push_str(&format!("= {}", &exp.0.to_string())); + s.push_str(&format!(" = {}", &exp.0.to_string())); } } |