Enum syn::Fields

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pub enum Fields {
    Named(FieldsNamed),
    Unnamed(FieldsUnnamed),
    Unit,
}

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Data stored within an enum variant or struct.

This type is available if Syn is built with the "derive" or "full" feature.

Syntax tree enum

This type is a syntax tree enum.

Variants

Named(FieldsNamed)

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Named fields of a struct or struct variant such as Point { x: f64, y: f64 }.

This type is available if Syn is built with the "derive" or "full" feature.

Unnamed(FieldsUnnamed)

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Unnamed fields of a tuple struct or tuple variant such as Some(T).

This type is available if Syn is built with the "derive" or "full" feature.

Unit

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Unit struct or unit variant such as None.

Methods

impl Fields

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Important traits for Iter<'a, T>

impl<'a, T> Iterator for Iter<'a, T> type Item = &'a T;

pub fn iter(&self) -> Iter<Field>

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Get an iterator over the borrowed Field items in this object. This iterator can be used to iterate over a named or unnamed struct or variant's fields uniformly.

Important traits for IterMut<'a, T>

impl<'a, T> Iterator for IterMut<'a, T> type Item = &'a mut T;

pub fn iter_mut(&mut self) -> IterMut<Field>

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Get an iterator over the mutably borrowed Field items in this object. This iterator can be used to iterate over a named or unnamed struct or variant's fields uniformly.

Trait Implementations

impl Debug for Fields

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fn fmt(&self, f: &mut Formatter) -> Result

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Formats the value using the given formatter.

impl Eq for Fields

impl PartialEq for Fields

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

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

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

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This method tests for !=.

impl Hash for Fields

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

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Feeds this value into the given [Hasher].

fn hash_slice<H>(data: &[Self], state: &mut H) where     H: Hasher,

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Feeds a slice of this type into the given [Hasher].

impl Clone for Fields

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fn clone(&self) -> Fields

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Returns a copy of the value.

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

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Performs copy-assignment from source.

impl From<FieldsNamed> for Fields

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fn from(e: FieldsNamed) -> Fields

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Performs the conversion.

impl From<FieldsUnnamed> for Fields

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fn from(e: FieldsUnnamed) -> Fields

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Performs the conversion.

impl ToTokens for Fields

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

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Write self to the given TokenStream.

fn into_token_stream(self) -> TokenStream

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Convert self directly into a TokenStream object.

impl<'a> IntoIterator for &'a Fields

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type Item = &'a Field

The type of the elements being iterated over.

type IntoIter = Iter<'a, Field>

Which kind of iterator are we turning this into?

fn into_iter(self) -> Self::IntoIter

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Creates an iterator from a value.

impl<'a> IntoIterator for &'a mut Fields

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type Item = &'a mut Field

The type of the elements being iterated over.

type IntoIter = IterMut<'a, Field>

Which kind of iterator are we turning this into?

fn into_iter(self) -> Self::IntoIter

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Creates an iterator from a value.