Struct darling::ast::Fields

pub struct Fields<T> {
    pub style: Style,
    pub fields: Vec<T, Global>,
    /* private fields */
}

Equivalent to syn::Fields, but replaces the AST element with a generic.

Fields

style: Style

fields: Vec<T, Global>

Implementations

impl<T> Fields<T>

pub fn new(style: Style, fields: Vec<T, Global>) -> Fields<T>

Creates a new Fields struct.

pub fn with_span(self, span: Span) -> Fields<T>

Adds a Span to Fields.

pub fn empty_from(vd: &Fields) -> Fields<T>

pub fn split(self) -> (Style, Vec<T, Global>)

Splits the Fields into its style and fields for further processing. Returns an empty Vec for Unit data.

pub fn is_newtype(&self) -> bool

Returns true if this variant’s data makes it a newtype.

pub fn is_unit(&self) -> bool

pub fn is_tuple(&self) -> bool

pub fn is_struct(&self) -> bool

pub fn as_ref(&self) -> Fields<&T>

pub fn map<F, U>(self, map: F) -> Fields<U>where
    F: FnMut(T) -> U,

pub fn iter(&self) -> Iter<'_, T>

pub fn len(&self) -> usize

Returns the number of fields in the structure.

pub fn is_empty(&self) -> bool

Returns true if the Fields contains no fields.

impl<F> Fields<F>where
    F: FromField,

pub fn try_from(fields: &Fields) -> Result<Fields<F>, Error>

Trait Implementations

impl<T> Clone for Fields<T>where
    T: Clone,

fn clone(&self) -> Fields<T>

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<T> Debug for Fields<T>where
    T: Debug,

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl<T, U> From<(Style, U)> for Fields<T>where
    U: Into<Vec<T, Global>>,

fn from((Style, U)) -> Fields<T>

Converts to this type from the input type.

impl<T> From<Style> for Fields<T>

fn from(style: Style) -> Fields<T>

Converts to this type from the input type.

impl<T> IntoIterator for Fields<T>

type Item = T

The type of the elements being iterated over.

type IntoIter = IntoIter<T, Global>

Which kind of iterator are we turning this into?

fn into_iter(self) -> <Fields<T> as IntoIterator>::IntoIter

Creates an iterator from a value.

impl<T> PartialEq<Fields<T>> for Fields<T>where
    T: PartialEq<T>,

fn eq(&self, other: &Fields<T>) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<T> ToTokens for Fields<T>where
    T: ToTokens,

fn to_tokens(&self, tokens: &mut TokenStream)

Write self to the given TokenStream.

fn to_token_stream(&self) -> TokenStream

Convert self directly into a TokenStream object.

fn into_token_stream(self) -> TokenStream

Convert self directly into a TokenStream object.

impl<T> UsesLifetimes for Fields<T>where
    T: UsesLifetimes,

fn uses_lifetimes(
    &self,
    options: &Options,
    lifetimes: &'a HashSet<Lifetime, BuildHasherDefault<FnvHasher>>
) -> HashSet<&'a Lifetime, BuildHasherDefault<FnvHasher>>

Returns the subset of the queried lifetimes that are used by the implementing syntax element.

fn uses_lifetimes_cloned(
    &self,
    options: &Options,
    lifetimes: &HashSet<Lifetime, BuildHasherDefault<FnvHasher>>
) -> HashSet<Lifetime, BuildHasherDefault<FnvHasher>>

Find all used lifetimes, then clone them and return that set.

impl<T> UsesTypeParams for Fields<T>where
    T: UsesTypeParams,

fn uses_type_params(
    &self,
    options: &Options,
    type_set: &'a HashSet<Ident, BuildHasherDefault<FnvHasher>>
) -> HashSet<&'a Ident, BuildHasherDefault<FnvHasher>>

Returns the subset of the queried type parameters that are used by the implementing syntax element.

fn uses_type_params_cloned(
    &self,
    options: &Options,
    type_set: &HashSet<Ident, BuildHasherDefault<FnvHasher>>
) -> HashSet<Ident, BuildHasherDefault<FnvHasher>>

Find all type params using uses_type_params, then clone the found values and return the set.

impl<T> Eq for Fields<T>where
    T: Eq,