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move_to_mod_rs.rs
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move_to_mod_rs.rs
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use ide_db::{
assists::{AssistId, AssistKind},
base_db::AnchoredPathBuf,
};
use syntax::{ast, AstNode};
use crate::{
assist_context::{AssistContext, Assists},
utils::trimmed_text_range,
};
// Assist: move_to_mod_rs
//
// Moves xxx.rs to xxx/mod.rs.
//
// ```
// //- /main.rs
// mod a;
// //- /a.rs
// $0fn t() {}$0
// ```
// ->
// ```
// fn t() {}
// ```
pub(crate) fn move_to_mod_rs(acc: &mut Assists, ctx: &AssistContext<'_>) -> Option<()> {
let source_file = ctx.find_node_at_offset::<ast::SourceFile>()?;
let module = ctx.sema.file_to_module_def(ctx.file_id())?;
// Enable this assist if the user select all "meaningful" content in the source file
let trimmed_selected_range = trimmed_text_range(&source_file, ctx.selection_trimmed());
let trimmed_file_range = trimmed_text_range(&source_file, source_file.syntax().text_range());
if module.is_mod_rs(ctx.db()) {
cov_mark::hit!(already_mod_rs);
return None;
}
if trimmed_selected_range != trimmed_file_range {
cov_mark::hit!(not_all_selected);
return None;
}
let target = source_file.syntax().text_range();
let module_name = module.name(ctx.db())?.display(ctx.db()).to_string();
let path = format!("./{module_name}/mod.rs");
let dst = AnchoredPathBuf { anchor: ctx.file_id(), path };
acc.add(
AssistId("move_to_mod_rs", AssistKind::Refactor),
format!("Convert {module_name}.rs to {module_name}/mod.rs"),
target,
|builder| {
builder.move_file(ctx.file_id(), dst);
},
)
}
#[cfg(test)]
mod tests {
use crate::tests::{check_assist, check_assist_not_applicable};
use super::*;
#[test]
fn trivial() {
check_assist(
move_to_mod_rs,
r#"
//- /main.rs
mod a;
//- /a.rs
$0fn t() {}
$0"#,
r#"
//- /a/mod.rs
fn t() {}
"#,
);
}
#[test]
fn must_select_all_file() {
cov_mark::check!(not_all_selected);
check_assist_not_applicable(
move_to_mod_rs,
r#"
//- /main.rs
mod a;
//- /a.rs
fn t() {}$0
"#,
);
cov_mark::check!(not_all_selected);
check_assist_not_applicable(
move_to_mod_rs,
r#"
//- /main.rs
mod a;
//- /a.rs
$0fn$0 t() {}
"#,
);
}
#[test]
fn cannot_promote_mod_rs() {
cov_mark::check!(already_mod_rs);
check_assist_not_applicable(
move_to_mod_rs,
r#"//- /main.rs
mod a;
//- /a/mod.rs
$0fn t() {}$0
"#,
);
}
#[test]
fn cannot_promote_main_and_lib_rs() {
check_assist_not_applicable(
move_to_mod_rs,
r#"//- /main.rs
$0fn t() {}$0
"#,
);
check_assist_not_applicable(
move_to_mod_rs,
r#"//- /lib.rs
$0fn t() {}$0
"#,
);
}
#[test]
fn works_in_mod() {
// note: /a/b.rs remains untouched
check_assist(
move_to_mod_rs,
r#"//- /main.rs
mod a;
//- /a.rs
$0mod b;
fn t() {}$0
//- /a/b.rs
fn t1() {}
"#,
r#"
//- /a/mod.rs
mod b;
fn t() {}
"#,
);
}
}