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|
use syntax::{
ast::{self, NameOwner, VisibilityOwner},
AstNode,
SyntaxKind::{CONST, ENUM, FN, MODULE, STATIC, STRUCT, TRAIT, TYPE_ALIAS, VISIBILITY},
T,
};
use crate::{utils::vis_offset, AssistContext, AssistId, AssistKind, Assists};
// Assist: change_visibility
//
// Adds or changes existing visibility specifier.
//
// ```
// $0fn frobnicate() {}
// ```
// ->
// ```
// pub(crate) fn frobnicate() {}
// ```
pub(crate) fn change_visibility(acc: &mut Assists, ctx: &AssistContext) -> Option<()> {
if let Some(vis) = ctx.find_node_at_offset::<ast::Visibility>() {
return change_vis(acc, vis);
}
add_vis(acc, ctx)
}
fn add_vis(acc: &mut Assists, ctx: &AssistContext) -> Option<()> {
let item_keyword = ctx.token_at_offset().find(|leaf| {
matches!(
leaf.kind(),
T![const]
| T![static]
| T![fn]
| T![mod]
| T![struct]
| T![enum]
| T![trait]
| T![type]
)
});
let (offset, target) = if let Some(keyword) = item_keyword {
let parent = keyword.parent()?;
let def_kws = vec![CONST, STATIC, TYPE_ALIAS, FN, MODULE, STRUCT, ENUM, TRAIT];
// Parent is not a definition, can't add visibility
if !def_kws.iter().any(|&def_kw| def_kw == parent.kind()) {
return None;
}
// Already have visibility, do nothing
if parent.children().any(|child| child.kind() == VISIBILITY) {
return None;
}
(vis_offset(&parent), keyword.text_range())
} else if let Some(field_name) = ctx.find_node_at_offset::<ast::Name>() {
let field = field_name.syntax().ancestors().find_map(ast::RecordField::cast)?;
if field.name()? != field_name {
cov_mark::hit!(change_visibility_field_false_positive);
return None;
}
if field.visibility().is_some() {
return None;
}
(vis_offset(field.syntax()), field_name.syntax().text_range())
} else if let Some(field) = ctx.find_node_at_offset::<ast::TupleField>() {
if field.visibility().is_some() {
return None;
}
(vis_offset(field.syntax()), field.syntax().text_range())
} else {
return None;
};
acc.add(
AssistId("change_visibility", AssistKind::RefactorRewrite),
"Change visibility to pub(crate)",
target,
|edit| {
edit.insert(offset, "pub(crate) ");
},
)
}
fn change_vis(acc: &mut Assists, vis: ast::Visibility) -> Option<()> {
if vis.syntax().text() == "pub" {
let target = vis.syntax().text_range();
return acc.add(
AssistId("change_visibility", AssistKind::RefactorRewrite),
"Change Visibility to pub(crate)",
target,
|edit| {
edit.replace(vis.syntax().text_range(), "pub(crate)");
},
);
}
if vis.syntax().text() == "pub(crate)" {
let target = vis.syntax().text_range();
return acc.add(
AssistId("change_visibility", AssistKind::RefactorRewrite),
"Change visibility to pub",
target,
|edit| {
edit.replace(vis.syntax().text_range(), "pub");
},
);
}
None
}
#[cfg(test)]
mod tests {
use crate::tests::{check_assist, check_assist_not_applicable, check_assist_target};
use super::*;
#[test]
fn change_visibility_adds_pub_crate_to_items() {
check_assist(change_visibility, "$0fn foo() {}", "pub(crate) fn foo() {}");
check_assist(change_visibility, "f$0n foo() {}", "pub(crate) fn foo() {}");
check_assist(change_visibility, "$0struct Foo {}", "pub(crate) struct Foo {}");
check_assist(change_visibility, "$0mod foo {}", "pub(crate) mod foo {}");
check_assist(change_visibility, "$0trait Foo {}", "pub(crate) trait Foo {}");
check_assist(change_visibility, "m$0od {}", "pub(crate) mod {}");
check_assist(change_visibility, "unsafe f$0n foo() {}", "pub(crate) unsafe fn foo() {}");
}
#[test]
fn change_visibility_works_with_struct_fields() {
check_assist(
change_visibility,
r"struct S { $0field: u32 }",
r"struct S { pub(crate) field: u32 }",
);
check_assist(change_visibility, r"struct S ( $0u32 )", r"struct S ( pub(crate) u32 )");
}
#[test]
fn change_visibility_field_false_positive() {
cov_mark::check!(change_visibility_field_false_positive);
check_assist_not_applicable(
change_visibility,
r"struct S { field: [(); { let $0x = ();}] }",
)
}
#[test]
fn change_visibility_pub_to_pub_crate() {
check_assist(change_visibility, "$0pub fn foo() {}", "pub(crate) fn foo() {}")
}
#[test]
fn change_visibility_pub_crate_to_pub() {
check_assist(change_visibility, "$0pub(crate) fn foo() {}", "pub fn foo() {}")
}
#[test]
fn change_visibility_const() {
check_assist(change_visibility, "$0const FOO = 3u8;", "pub(crate) const FOO = 3u8;");
}
#[test]
fn change_visibility_static() {
check_assist(change_visibility, "$0static FOO = 3u8;", "pub(crate) static FOO = 3u8;");
}
#[test]
fn change_visibility_type_alias() {
check_assist(change_visibility, "$0type T = ();", "pub(crate) type T = ();");
}
#[test]
fn change_visibility_handles_comment_attrs() {
check_assist(
change_visibility,
r"
/// docs
// comments
#[derive(Debug)]
$0struct Foo;
",
r"
/// docs
// comments
#[derive(Debug)]
pub(crate) struct Foo;
",
)
}
#[test]
fn not_applicable_for_enum_variants() {
check_assist_not_applicable(
change_visibility,
r"mod foo { pub enum Foo {Foo1} }
fn main() { foo::Foo::Foo1$0 } ",
);
}
#[test]
fn change_visibility_target() {
check_assist_target(change_visibility, "$0fn foo() {}", "fn");
check_assist_target(change_visibility, "pub(crate)$0 fn foo() {}", "pub(crate)");
check_assist_target(change_visibility, "struct S { $0field: u32 }", "field");
}
}
|
