Trait clippy_utils::sugg::DiagnosticExt

pub trait DiagnosticExt<T: LintContext> {
    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 Diagnostic.

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")

Implementations on Foreign Types

impl<T: LintContext> DiagnosticExt<T> for Diagnostic

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