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use ra_syntax::{
SyntaxKind::{VISIBILITY, FN_KW, MOD_KW, STRUCT_KW, ENUM_KW, TRAIT_KW, FN_DEF, MODULE, STRUCT_DEF, ENUM_DEF, TRAIT_DEF},
};
use crate::assists::{AssistCtx, Assist};
pub fn change_visibility(ctx: AssistCtx) -> Option<Assist> {
let keyword = ctx.leaf_at_offset().find(|leaf| match leaf.kind() {
FN_KW | MOD_KW | STRUCT_KW | ENUM_KW | TRAIT_KW => true,
_ => false,
})?;
let parent = keyword.parent()?;
let def_kws = vec![FN_DEF, MODULE, STRUCT_DEF, ENUM_DEF, TRAIT_DEF];
// 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;
}
let node_start = parent.range().start();
ctx.build("make pub crate", |edit| {
edit.insert(node_start, "pub(crate) ");
edit.set_cursor(node_start);
})
}
#[cfg(test)]
mod tests {
use super::*;
use crate::assists::check_assist;
#[test]
fn test_change_visibility() {
check_assist(
change_visibility,
"<|>fn foo() {}",
"<|>pub(crate) fn foo() {}",
);
check_assist(
change_visibility,
"f<|>n foo() {}",
"<|>pub(crate) fn foo() {}",
);
check_assist(
change_visibility,
"<|>struct Foo {}",
"<|>pub(crate) struct Foo {}",
);
check_assist(
change_visibility,
"<|>mod foo {}",
"<|>pub(crate) mod foo {}",
);
check_assist(
change_visibility,
"<|>trait Foo {}",
"<|>pub(crate) trait Foo {}",
);
check_assist(change_visibility, "m<|>od {}", "<|>pub(crate) mod {}");
check_assist(
change_visibility,
"pub(crate) f<|>n foo() {}",
"pub(crate) f<|>n foo() {}",
);
check_assist(
change_visibility,
"unsafe f<|>n foo() {}",
"<|>pub(crate) unsafe fn foo() {}",
);
}
}
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