Struct parsel::ast::Brace

pub struct Brace<T> { /* private fields */ }

Parses a subexpression inside curly braces.

#[derive(PartialEq, Eq, Debug, Parse)]
struct KeyValue {
    key: LitStr,
    eq: Token![=],
    value: Lit,
}
let map: Brace<KeyValue> = parse_quote!({ "age" = 27 });
let key_value: KeyValue = parse_quote!("age" = 27);

assert_eq!(map.into_inner(), key_value);

let set: Brace<Ident> = parse_quote!(my_ident);

let block: Brace<LitBool> = LitBool::from(false).into();

assert_eq!(
    block.to_token_stream().to_string(),
    quote::quote!({ false }).to_string(),
);

Implementations

impl<T> Brace<T>

pub fn new(inner: T, span: Span) -> Self

pub fn into_inner(self) -> T

pub const fn as_braces(&self) -> &Brace

pub fn into_braces(self) -> Brace

pub const fn as_parts(&self) -> (&Brace, &T)

pub fn into_parts(self) -> (Brace, T)

Trait Implementations

impl<T> AsMut<T> for Brace<T>

fn as_mut(&mut self) -> &mut T

Converts this type into a mutable reference of the (usually inferred) input type.

impl<T> AsRef<T> for Brace<T>

fn as_ref(&self) -> &T

Converts this type into a shared reference of the (usually inferred) input type.

impl<T: Clone> Clone for Brace<T>

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

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<T: Debug> Debug for Brace<T>

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

Formats the value using the given formatter.

impl<T: Default> Default for Brace<T>

fn default() -> Brace<T>

Returns the “default value” for a type.

impl<T> Deref for Brace<T>

type Target = T

The resulting type after dereferencing.

fn deref(&self) -> &Self::Target

Dereferences the value.

impl<T> DerefMut for Brace<T>

fn deref_mut(&mut self) -> &mut Self::Target

Mutably dereferences the value.

impl<T: ToTokens> Display for Brace<T>

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

Formats the value using the given formatter.

impl<T> From<(Brace, T)> for Brace<T>

fn from((braces, inner): (Brace, T)) -> Self

Converts to this type from the input type.

impl<T: Spanned> From<T> for Brace<T>

fn from(inner: T) -> Self

Converts to this type from the input type.

impl<T: Parse> FromStr for Brace<T>

type Err = Error

The associated error which can be returned from parsing.

fn from_str(string: &str) -> Result<Self>

Parses a string s to return a value of this type.

impl<T: Hash> Hash for Brace<T>

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

Feeds this value into the given Hasher.

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

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl<T: Parse> Parse for Brace<T>

fn parse(input: ParseStream<'_>) -> Result<Self>

impl<T: PartialEq> PartialEq for Brace<T>

fn eq(&self, other: &Brace<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> ToTokens for Brace<T>

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

where Self: Sized,

Convert self directly into a TokenStream object.

impl<T: Copy> Copy for Brace<T>

impl<T: Eq> Eq for Brace<T>

impl<T> StructuralPartialEq for Brace<T>