Trait DiagExt

pub trait DiagExt<T: LintContext> {
    // Required methods
    fn suggest_item_with_attr<D: Display + ?Sized>(
        &mut self,
        cx: &T,
        item: Span,
        msg: &str,
        attr: &D,
        applicability: Applicability,
    );
    fn suggest_prepend_item(
        &mut self,
        cx: &T,
        item: Span,
        msg: &str,
        new_item: &str,
        applicability: Applicability,
    );
    fn suggest_remove_item(
        &mut self,
        cx: &T,
        item: Span,
        msg: &str,
        applicability: Applicability,
    );
}

Convenience extension trait for Diag.

Required Methods

fn suggest_item_with_attr<D: Display + ?Sized>( &mut self, cx: &T, item: Span, msg: &str, attr: &D, applicability: Applicability, )

Suggests to add an attribute to an item.

Correctly handles indentation of the attribute and item.

Example

diag.suggest_item_with_attr(cx, item, "#[derive(Default)]");

fn suggest_prepend_item( &mut self, cx: &T, item: Span, msg: &str, new_item: &str, applicability: Applicability, )

Suggest to add an item before another.

The item should not be indented (except for inner indentation).

Example

diag.suggest_prepend_item(cx, item,
"fn foo() {
    bar();
}");

fn suggest_remove_item( &mut self, cx: &T, item: Span, msg: &str, applicability: Applicability, )

Suggest to completely remove an item.

This will remove an item and all following whitespace until the next non-whitespace character. This should work correctly if item is on the same indentation level as the following item.

Example

diag.suggest_remove_item(cx, item, "remove this")

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementations on Foreign Types

impl<T: LintContext> DiagExt<T> for Diag<'_, ()>

fn suggest_item_with_attr<D: Display + ?Sized>( &mut self, cx: &T, item: Span, msg: &str, attr: &D, applicability: Applicability, )

fn suggest_prepend_item( &mut self, cx: &T, item: Span, msg: &str, new_item: &str, applicability: Applicability, )

fn suggest_remove_item( &mut self, cx: &T, item: Span, msg: &str, applicability: Applicability, )

Implementors