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Create new nodes only when applying changes

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This commit is contained in:
unexge 2021-01-15 22:35:42 +03:00
parent a3a722de9f
commit c303014f39
1 changed files with 31 additions and 16 deletions
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47
crates/assists/src/handlers/unmerge_use.rs
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@ -32,28 +32,33 @@ pub(crate) fn unmerge_use(acc: &mut Assists, ctx: &AssistContext) -> Option<()>
let use_: ast::Use = tree_list.syntax().ancestors().find_map(ast::Use::cast)?;
let path = resolve_full_path(&tree)?;
let new_use = ast::make::use_(
use_.visibility(),
ast::make::use_tree(path, None, tree.rename(), tree.star_token().is_some()),
);
let mut rewriter = SyntaxRewriter::default();
rewriter += tree.remove();
rewriter.insert_after(use_.syntax(), &ast::make::tokens::single_newline());
if let ident_level @ 1..=usize::MAX = use_.indent_level().0 as usize {
rewriter.insert_after(
use_.syntax(),
&ast::make::tokens::whitespace(&" ".repeat(4 * ident_level)),
);
}
rewriter.insert_after(use_.syntax(), new_use.syntax());
let target = tree.syntax().text_range();
acc.add(
AssistId("unmerge_use", AssistKind::RefactorRewrite),
"Unmerge use",
target,
|builder| {
let new_use = ast::make::use_(
use_.visibility(),
ast::make::use_tree(
path,
tree.use_tree_list(),
tree.rename(),
tree.star_token().is_some(),
),
);
let mut rewriter = SyntaxRewriter::default();
rewriter += tree.remove();
rewriter.insert_after(use_.syntax(), &ast::make::tokens::single_newline());
if let ident_level @ 1..=usize::MAX = use_.indent_level().0 as usize {
rewriter.insert_after(
use_.syntax(),
&ast::make::tokens::whitespace(&" ".repeat(4 * ident_level)),
);
}
rewriter.insert_after(use_.syntax(), new_use.syntax());
builder.rewrite(rewriter);
},
)
@ -193,6 +198,16 @@ use foo::bar::{baz::{qux$0, foobar}, barbaz};
r"
use foo::bar::{baz::{foobar}, barbaz};
use foo::bar::baz::qux;
",
);
check_assist(
unmerge_use,
r"
use foo::bar::{baz$0::{qux, foobar}, barbaz};
",
r"
use foo::bar::{barbaz};
use foo::bar::baz::{qux, foobar};
",
);
}