CodeSuggestion in rustc_errors - Rust (original) (raw)

Struct CodeSuggestion

pub struct CodeSuggestion {
    pub substitutions: Vec<Substitution>,
    pub msg: DiagMessage,
    pub style: SuggestionStyle,
    pub applicability: Applicability,
}

Each substitute can have multiple variants due to multiple applicable suggestions

foo.bar might be replaced with a.b or x.y by replacingfoo and bar on their own:

ⓘ

vec![
    Substitution { parts: vec![(0..3, "a"), (4..7, "b")] },
    Substitution { parts: vec![(0..3, "x"), (4..7, "y")] },
]

or by replacing the entire span:

ⓘ

vec![
    Substitution { parts: vec![(0..7, "a.b")] },
    Substitution { parts: vec![(0..7, "x.y")] },
]

Visual representation of this suggestion.

Whether or not the suggestion is approximate

Sometimes we may show suggestions with placeholders, which are useful for users but not useful for tools like rustfix

Source §

Source

Returns the assembled code suggestions, whether they should be shown with an underline and whether the substitution only differs in capitalization.

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 80 bytes