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use ra_text_edit::TextEditBuilder;
use ra_syntax::{
SourceFileNode,
algo::find_leaf_at_offset,
SyntaxKind::{VISIBILITY, FN_KW, MOD_KW, STRUCT_KW, ENUM_KW, TRAIT_KW, FN_DEF, MODULE, STRUCT_DEF, ENUM_DEF, TRAIT_DEF},
TextUnit,
};
use crate::assists::LocalEdit;
pub fn change_visibility<'a>(
file: &'a SourceFileNode,
offset: TextUnit,
) -> Option<impl FnOnce() -> LocalEdit + 'a> {
let syntax = file.syntax();
let keyword = find_leaf_at_offset(syntax, 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];
let node_start = parent.range().start();
Some(move || {
let mut edit = TextEditBuilder::new();
if !def_kws.iter().any(|&def_kw| def_kw == parent.kind())
|| parent.children().any(|child| child.kind() == VISIBILITY)
{
return LocalEdit {
label: "make pub crate".to_string(),
edit: edit.finish(),
cursor_position: Some(offset),
};
}
edit.insert(node_start, "pub(crate) ".to_string());
LocalEdit {
label: "make pub crate".to_string(),
edit: edit.finish(),
cursor_position: Some(node_start),
}
})
}
#[cfg(test)]
mod tests {
use super::*;
use crate::test_utils::check_action;
#[test]
fn test_change_visibility() {
check_action(
"<|>fn foo() {}",
"<|>pub(crate) fn foo() {}",
|file, off| change_visibility(file, off).map(|f| f()),
);
check_action(
"f<|>n foo() {}",
"<|>pub(crate) fn foo() {}",
|file, off| change_visibility(file, off).map(|f| f()),
);
check_action(
"<|>struct Foo {}",
"<|>pub(crate) struct Foo {}",
|file, off| change_visibility(file, off).map(|f| f()),
);
check_action("<|>mod foo {}", "<|>pub(crate) mod foo {}", |file, off| {
change_visibility(file, off).map(|f| f())
});
check_action(
"<|>trait Foo {}",
"<|>pub(crate) trait Foo {}",
|file, off| change_visibility(file, off).map(|f| f()),
);
check_action("m<|>od {}", "<|>pub(crate) mod {}", |file, off| {
change_visibility(file, off).map(|f| f())
});
check_action(
"pub(crate) f<|>n foo() {}",
"pub(crate) f<|>n foo() {}",
|file, off| change_visibility(file, off).map(|f| f()),
);
check_action(
"unsafe f<|>n foo() {}",
"<|>pub(crate) unsafe fn foo() {}",
|file, off| change_visibility(file, off).map(|f| f()),
);
}
}
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