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feat: add fix for unused_variables

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This commit is contained in:
Young-Flash 2024-03-11 19:34:16 +08:00
parent a0dd822972
commit 77136575da
1 changed files with 28 additions and 0 deletions
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28
crates/ide-diagnostics/src/handlers/unused_variables.rs
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@ -1,3 +1,11 @@
use ide_db::{
assists::{Assist, AssistId, AssistKind},
base_db::FileRange,
label::Label,
source_change::SourceChange,
};
use text_edit::TextEdit;
use crate::{Diagnostic, DiagnosticCode, DiagnosticsContext};
// Diagnostic: unused-variables
@ -8,15 +16,35 @@ pub(crate) fn unused_variables(
d: &hir::UnusedVariable,
) -> Diagnostic {
let ast = d.local.primary_source(ctx.sema.db).syntax_ptr();
let diagnostic_range = ctx.sema.diagnostics_display_range(ast);
let var_name = d.local.primary_source(ctx.sema.db).syntax().to_string();
Diagnostic::new_with_syntax_node_ptr(
ctx,
DiagnosticCode::RustcLint("unused_variables"),
"unused variable",
ast,
)
.with_fixes(fixes(&var_name, diagnostic_range, ast.file_id.is_macro()))
.experimental()
}
fn fixes(var_name: &String, diagnostic_range: FileRange, is_in_marco: bool) -> Option<Vec<Assist>> {
if is_in_marco {
return None;
}
Some(vec![Assist {
id: AssistId("unscore_unused_variable_name", AssistKind::QuickFix),
label: Label::new(format!("Rename unused {} to _{}", var_name, var_name)),
group: None,
target: diagnostic_range.range,
source_change: Some(SourceChange::from_text_edit(
diagnostic_range.file_id,
TextEdit::replace(diagnostic_range.range, format!("_{}", var_name)),
)),
trigger_signature_help: false,
}])
}
#[cfg(test)]
mod tests {
use crate::tests::check_diagnostics;