Struct darling::util::Ignored

pub struct Ignored;

An efficient way of discarding data from an attribute.

All meta-items, fields, and variants will be successfully read into the Ignored struct, with all properties discarded.

Trait Implementations

impl Hash for Ignored

fn hash<__H>(&self, __arg_0: &mut __H) where
    __H: Hasher, 

impl Copy for Ignored

impl Clone for Ignored

fn clone(&self) -> Ignored

impl Eq for Ignored

impl FromVariant for Ignored

fn from_variant(&Variant) -> Result<Ignored, Error>

Create an instance from syn::Variant, or return an error.

impl PartialEq<Ignored> for Ignored

fn eq(&self, __arg_0: &Ignored) -> bool

impl Debug for Ignored

fn fmt(&self, __arg_0: &mut Formatter) -> Result<(), Error>

impl FromDeriveInput for Ignored

fn from_derive_input(&DeriveInput) -> Result<Ignored, Error>

Create an instance from syn::DeriveInput, or return an error.

impl FromMetaItem for Ignored

fn from_meta_item(&MetaItem) -> Result<Ignored, Error>

Create an instance from a syn::MetaItem by dispatching to the format-appropriate trait function. This generally should not be overridden by implementers.

fn from_nested_meta_item(&NestedMetaItem) -> Result<Ignored, Error>

fn from_word() -> Result<Self, Error>

Create an instance from the presence of the word in the attribute with no additional options specified.

fn from_list(items: &[NestedMetaItem]) -> Result<Self, Error>

Create an instance from a list of nested meta items.

fn from_value(value: &Lit) -> Result<Self, Error>

Create an instance from a literal value of either foo = "bar" or foo("bar"). This dispatches to the appropriate method based on the type of literal encountered, and generally should not be overridden by implementers.

fn from_char(value: char) -> Result<Self, Error>

Create an instance from a char literal in a value position.

fn from_string(value: &str) -> Result<Self, Error>

Create an instance from a string literal in a value position.

fn from_bool(value: bool) -> Result<Self, Error>

Create an instance from a bool literal in a value position.

impl FromField for Ignored

fn from_field(&Field) -> Result<Ignored, Error>