Enum syn::Fields

[−] Show declaration

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

[−] Expand description

Data stored within an enum variant or struct.

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

Syntax tree enum

This type is a syntax tree enum.

Variants

Named(FieldsNamed)

[−] Expand description

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

Unnamed(FieldsUnnamed)

[−] Expand description

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

Unit

[−] Expand description

Unit struct or unit variant such as None.

Implementations

impl Fields[−]

pub fn iter(&self) -> Iter<'_, Field>[−]

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.

pub fn iter_mut(&mut self) -> IterMut<'_, Field>[−]

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.

pub fn len(&self) -> usize[−]

Returns the number of fields.

pub fn is_empty(&self) -> bool[−]

Returns true if there are zero fields.

Trait Implementations

impl Clone for Fields[+]

[+] Show hidden undocumented items

fn clone(&self) -> Self[−]

Returns a copy of the value.

pub fn clone_from(&mut self, source: &Self)[−]

Performs copy-assignment from source.

impl Debug for Fields[+]

[+] Show hidden undocumented items

fn fmt(&self, formatter: &mut Formatter<'_>) -> Result[−]

Formats the value using the given formatter.

impl Eq for Fields

impl From<FieldsNamed> for Fields[+]

[+] Show hidden undocumented items

fn from(e: FieldsNamed) -> Fields[−]

Performs the conversion.

impl From<FieldsUnnamed> for Fields[+]

[+] Show hidden undocumented items

fn from(e: FieldsUnnamed) -> Fields[−]

Performs the conversion.

impl Hash for Fields[+]

[+] Show hidden undocumented items

fn hash<H>(&self, state: &mut H) where
    H: Hasher, [−]

Feeds this value into the given Hasher.

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

Feeds a slice of this type into the given Hasher.

impl IntoIterator for Fields[+]

[+] Show hidden undocumented items

type Item = Field

The type of the elements being iterated over.

type IntoIter = IntoIter<Field>

Which kind of iterator are we turning this into?

fn into_iter(self) -> Self::IntoIter[−]

Creates an iterator from a value.

impl<'a> IntoIterator for &'a Fields[+]

[+] Show hidden undocumented items

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[−]

Creates an iterator from a value.

impl<'a> IntoIterator for &'a mut Fields[+]

[+] Show hidden undocumented items

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[−]

Creates an iterator from a value.

impl PartialEq<Fields> for Fields[+]

[+] Show hidden undocumented items

fn eq(&self, other: &Self) -> bool[−]

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

[+] Expand attributes

#[must_use]pub fn ne(&self, other: &Rhs) -> bool[−]

This method tests for !=.

impl ToTokens for Fields[+]

[+] Show hidden undocumented items

fn to_tokens(&self, tokens: &mut TokenStream)[−]

Write self to the given TokenStream.

pub fn to_token_stream(&self) -> TokenStream[−]

Convert self directly into a TokenStream object.

pub fn into_token_stream(self) -> TokenStream[−]

Convert self directly into a TokenStream object.