[][src]Struct synstructure::BindingInfo

pub struct BindingInfo<'a> {
    pub binding: Ident,
    pub style: BindStyle,
    // some fields omitted

Information about a specific binding. This contains both an Ident reference to the given field, and the syn &'a Field descriptor for that field.

This type supports quote::ToTokens, so can be directly used within the quote! macro. It expands to a reference to the matched field.


binding: Ident

The name which this BindingInfo will bind to.

style: BindStyle

The type of binding which this BindingInfo will create.


impl<'a> BindingInfo<'a>[src]

pub fn ast(&self) -> &'a Field[src]

Returns a reference to the underlying syn AST node which this BindingInfo references

pub fn pat(&self) -> TokenStream[src]

Generates the pattern fragment for this field binding.


let di: syn::DeriveInput = parse_quote! {
    enum A {
        B{ a: i32, b: i32 },
let s = Structure::new(&di);

    quote! {
        ref __binding_0

pub fn referenced_ty_params(&self) -> Vec<&'a Ident>[src]

Returns a list of the type parameters which are referenced in this field's type.


If the field contains any macros in type position, all parameters will be considered bound. This is because we cannot determine which type parameters are bound by type macros.


let di: syn::DeriveInput = parse_quote! {
    struct A<T, U> {
        a: Option<T>,
        b: U,
let mut s = Structure::new(&di);

    &[&(syn::Ident::new("T", proc_macro2::Span::call_site()))]

Trait Implementations

impl<'a> Clone for BindingInfo<'a>[src]

fn clone_from(&mut self, source: &Self)1.0.0[src]

Performs copy-assignment from source. Read more

impl<'a> Eq for BindingInfo<'a>[src]

impl<'a> PartialEq<BindingInfo<'a>> for BindingInfo<'a>[src]

impl<'a> Debug for BindingInfo<'a>[src]

impl<'a> Hash for BindingInfo<'a>[src]

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

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

impl<'a> ToTokens for BindingInfo<'a>[src]

fn into_token_stream(self) -> TokenStream[src]

Convert self directly into a TokenStream object. Read more

Auto Trait Implementations

impl<'a> !Send for BindingInfo<'a>

impl<'a> !Sync for BindingInfo<'a>

Blanket Implementations

impl<T> From<T> for T[src]

impl<T, U> Into<U> for T where
    U: From<T>, 

impl<T> ToOwned for T where
    T: Clone

type Owned = T

The resulting type after obtaining ownership.

impl<T, U> TryFrom<U> for T where
    U: Into<T>, 

type Error = Infallible

The type returned in the event of a conversion error.

impl<T, U> TryInto<U> for T where
    U: TryFrom<T>, 

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.

impl<T> BorrowMut<T> for T where
    T: ?Sized

impl<T> Borrow<T> for T where
    T: ?Sized

impl<T> Any for T where
    T: 'static + ?Sized

impl<T> Spanned for T where
    T: ToTokens