94 lines
2.5 KiB
Rust
94 lines
2.5 KiB
Rust
|
use ide_db::syntax_helpers::node_ext::for_each_break_and_continue_expr;
|
||
|
|
use syntax::ast::{self, AstNode, HasLoopBody};
|
||
|
|
use syntax::T;
|
||
|
|
|
||
|
|
use crate::{AssistContext, AssistId, AssistKind, Assists};
|
||
|
|
|
||
|
|
// Assist: add_lifetime_to_type
|
||
|
|
//
|
||
|
|
// Adds a new lifetime to a struct, enum or union.
|
||
|
|
//
|
||
|
|
// ```
|
||
|
|
// struct Point {
|
||
|
|
// x: &u32,
|
||
|
|
// y: u32,
|
||
|
|
// }
|
||
|
|
// ```
|
||
|
|
// ->
|
||
|
|
// ```
|
||
|
|
// struct Point<'a> {
|
||
|
|
// x: &'a u32,
|
||
|
|
// y: u32,
|
||
|
|
// }
|
||
|
|
// ```
|
||
|
|
pub(crate) fn add_label_to_loop(acc: &mut Assists, ctx: &AssistContext) -> Option<()> {
|
||
|
|
let loop_expr = ctx.find_node_at_offset::<ast::LoopExpr>()?;
|
||
|
|
let loop_body = loop_expr.loop_body().and_then(|it| it.stmt_list());
|
||
|
|
let mut related_exprs = vec![];
|
||
|
|
related_exprs.push(ast::Expr::LoopExpr(loop_expr.clone()));
|
||
|
|
for_each_break_and_continue_expr(loop_expr.label(), loop_body, &mut |expr| {
|
||
|
|
if let ast::Expr::BreakExpr(_) | ast::Expr::ContinueExpr(_) = expr {
|
||
|
|
related_exprs.push(expr)
|
||
|
|
}
|
||
|
|
});
|
||
|
|
dbg!(loop_expr.syntax().text_range());
|
||
|
|
|
||
|
|
acc.add(
|
||
|
|
AssistId("add_label_to_loop", AssistKind::Generate),
|
||
|
|
"Add Label",
|
||
|
|
loop_expr.syntax().text_range(),
|
||
|
|
|builder| {
|
||
|
|
for expr in related_exprs {
|
||
|
|
match expr {
|
||
|
|
ast::Expr::BreakExpr(break_expr) => {
|
||
|
|
if let Some(break_token) = break_expr.break_token() {
|
||
|
|
builder.insert(break_token.text_range().end(), " 'loop")
|
||
|
|
}
|
||
|
|
},
|
||
|
|
ast::Expr::ContinueExpr(continue_expr) => {
|
||
|
|
if let Some(continue_token) = continue_expr.continue_token() {
|
||
|
|
builder.insert(continue_token.text_range().end(), " 'loop")
|
||
|
|
}
|
||
|
|
},
|
||
|
|
ast::Expr::LoopExpr(loop_expr) => {
|
||
|
|
if let Some(loop_token) = loop_expr.loop_token() {
|
||
|
|
builder.insert(loop_token.text_range().start(), "'loop: ")
|
||
|
|
}
|
||
|
|
},
|
||
|
|
_ => todo!()
|
||
|
|
}
|
||
|
|
}
|
||
|
|
},
|
||
|
|
)
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
#[cfg(test)]
|
||
|
|
mod tests {
|
||
|
|
use crate::tests::check_assist;
|
||
|
|
|
||
|
|
use super::*;
|
||
|
|
|
||
|
|
#[test]
|
||
|
|
fn add_label() {
|
||
|
|
check_assist(
|
||
|
|
add_label_to_loop,
|
||
|
|
r#"
|
||
|
|
fn main() {
|
||
|
|
loop$0 {
|
||
|
|
break;
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
}"#,
|
||
|
|
r#"
|
||
|
|
fn main() {
|
||
|
|
'loop: loop {
|
||
|
|
break 'loop;
|
||
|
|
continue 'loop;
|
||
|
|
}
|
||
|
|
}"#,
|
||
|
|
);
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|