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use hir::{db::AstDatabase, diagnostics::RemoveThisSemicolon, Semantics};
use ide_assists::{Assist, AssistResolveStrategy};
use ide_db::{source_change::SourceChange, RootDatabase};
use syntax::{ast, AstNode};
use text_edit::TextEdit;
use crate::diagnostics::{fix, DiagnosticWithFix};
impl DiagnosticWithFix for RemoveThisSemicolon {
fn fix(
&self,
sema: &Semantics<RootDatabase>,
_resolve: &AssistResolveStrategy,
) -> Option<Assist> {
let root = sema.db.parse_or_expand(self.file)?;
let semicolon = self
.expr
.to_node(&root)
.syntax()
.parent()
.and_then(ast::ExprStmt::cast)
.and_then(|expr| expr.semicolon_token())?
.text_range();
let edit = TextEdit::delete(semicolon);
let source_change = SourceChange::from_text_edit(self.file.original_file(sema.db), edit);
Some(fix("remove_semicolon", "Remove this semicolon", source_change, semicolon))
}
}
#[cfg(test)]
mod tests {
use crate::diagnostics::tests::check_fix;
#[test]
fn remove_semicolon() {
check_fix(r#"fn f() -> i32 { 92$0; }"#, r#"fn f() -> i32 { 92 }"#);
}
}
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