Struct proc_easy::examples::arg

source · [−]

pub struct arg {
    pub span: Span,
}

Fields

span: Span

Trait Implementations

impl Clone for arg

fn clone(&self) -> Self

Returns a copy of the value. Read more

1.0.0 · source

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

Performs copy-assignment from source. Read more

impl Debug for arg

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

Formats the value using the given formatter. Read more

impl Default for arg

fn default() -> Self

Returns the “default value” for a type. Read more

impl EasyToken for arg

fn display() -> &'static str

Display the token for the user.

impl Hash for arg

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

Feeds this value into the given Hasher. Read more

1.3.0 · source

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 Parse for arg

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

impl PartialEq<arg> for arg

fn eq(&self, _other: &Self) -> bool

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

1.0.0 · source

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

This method tests for !=.

impl ToTokens for arg

fn to_tokens(&self, tokens: &mut TokenStream2)

Write self to the given TokenStream. Read more

fn to_token_stream(&self) -> TokenStream

Convert self directly into a TokenStream object. Read more

fn into_token_stream(self) -> TokenStream

Convert self directly into a TokenStream object. Read more

impl Copy for arg

impl Eq for arg

Auto Trait Implementations

impl RefUnwindSafe for arg

impl !Send for arg

impl !Sync for arg

impl Unpin for arg

impl UnwindSafe for arg

Blanket Implementations

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

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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

const: unstable · source

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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

const: unstable · source

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

Mutably borrows from an owned value. Read more

impl<T> EasyArgument for T where
T: EasyToken,

fn name_display() -> &'static str

Returns attribute name for display purposes.

fn name_span(&self) -> Span

Returns attribute name for display purposes.

impl<T> EasyArgumentField for T where
T: EasyArgumentGroup,

fn try_parse(
lookahead1: &Lookahead1<'_>,
stream: &ParseBuffer<'_>
) -> Result<Option<T>, Error>

Attempt to parse attribute field. Returns some field when parsing succeeds. Returns none if attribute peeking returns false, signalling that stream contains some other attribute. Returns error if peeking returns true but parsing fails. Read more

fn try_extend(
    &mut self,
    lookahead1: &Lookahead1<'_>,
    stream: &ParseBuffer<'_>
) -> Result<bool, Error>

Attempt to parse attribute field when it already has been successfully parsed. Field value should extend itself with newly parsed attribute or return error. Returns true when parsing and extending succeeds. Returns false if attribute peeking returns false, signalling that stream contains some other attribute. Returns error if peeking returns true but parsing or extending fails. Read more

fn missing() -> Result<T, String>

Called if the attribute field was never parsed. Returns error if attribute is mandatory. Otherwise returns an instance that will be used to build attributes structure. Read more

impl<T> EasyArgumentGroup for T where
T: EasyArgument,

fn try_parse(
lookahead1: &Lookahead1<'_>,
stream: &ParseBuffer<'_>
) -> Result<Option<T>, Error>

Attempt to parse attribute group. Returns some attribute when parsing succeeds. Returns none if attribute peeking returns false, signalling that stream contains some other attribute. Returns error if peeking returns true but parsing fails. Read more

fn overlap_error(&self, other: &T) -> Error

Produces error with appropriate message when the attribute group overlaps another instance. This is called by certain EasyArgumentField implementations. Read more

fn missing_error() -> String

Produces error with appropriate message when the attribute group is missing. This is called by certain EasyArgumentField implementations. Read more

impl<T> EasyPeek for T where
T: Token + Parse,

fn peek(lookahead1: &Lookahead1<'_>) -> bool

Peek head token before parsing.

fn peek_stream(stream: &ParseBuffer<'_>) -> bool

Peek head token before parsing.

impl<T> From<T> for T

const: unstable · source

fn from(t: T) -> T

Returns the argument unchanged.

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

const: unstable · source

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

impl<T> Spanned for T where
T: Spanned + ?Sized,

fn span(&self) -> Span

Returns a Span covering the complete contents of this syntax tree node, or Span::call_site() if this node is empty. Read more

impl<T> ToOwned for T where
T: Clone,

type Owned = T

The resulting type after obtaining ownership.

fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more

fn clone_into(&self, target: &mut T)

🔬 This is a nightly-only experimental API. (toowned_clone_into)

Uses borrowed data to replace owned data, usually by cloning. Read more

impl<T> Token for T where
T: CustomToken,

fn peek(cursor: Cursor<'_>) -> bool

fn display() -> &'static str

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

type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.

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.

const: unstable · source

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.