Struct StringTokens

pub struct StringTokens<T: FromMacro>(pub T);

Parse a string as TokenStream and extract into T.

Example

let StringTokens(Iter(mut iter)) = quote!("1 2 3").into_iter().extract()?;
let a: i32 = iter.extract()?;
let b: i32 = iter.extract()?;
let c: i32 = iter.extract()?;
assert_eq!((a, b, c), (1, 2, 3));

Tuple Fields

0: T

Trait Implementations

impl<T: Debug + FromMacro> Debug for StringTokens<T>

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

Formats the value using the given formatter.

impl<T: Default + FromMacro> Default for StringTokens<T>

fn default() -> StringTokens<T>

Returns the “default value” for a type.

impl<T: FromMacro> FromMacro for StringTokens<T>

fn from_one(tt: TokenTree) -> Result<Self, Error>

This will be called if there is only one item

const PREFER_MANY: bool = false

Hint to All and similar extractors to disable length validation.

fn from_many(tokens: TokenStream) -> Result<Self, Error>

This will be called if there is more than one item.

fn peek(tt: &TokenTree) -> bool

Look ahead and determine parsability.

impl<T: Hash + FromMacro> Hash for StringTokens<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: PartialEq + FromMacro> PartialEq for StringTokens<T>

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

Tests for self and other values to be equal, and is used by ==.

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

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

impl<T: Eq + FromMacro> Eq for StringTokens<T>

impl<T: FromMacro> StructuralPartialEq for StringTokens<T>