[−][src]Struct syn::LitStr
A UTF-8 string literal: "foo"
.
This type is available if Syn is built with the "derive"
or
"full"
feature.
Methods
impl LitStr
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pub fn new(value: &str, span: Span) -> Self
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pub fn value(&self) -> String
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pub fn parse<T: Parse>(&self) -> Result<T, Error>
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Parse a syntax tree node from the content of this string literal.
All spans in the syntax tree will point to the span of this LitStr
.
Example
ⓘThis code runs with edition 2018
use proc_macro2::Span; use syn::{Attribute, Error, Ident, Lit, Meta, MetaNameValue, Path, Result}; // Parses the path from an attribute that looks like: // // #[path = "a::b::c"] // // or returns `None` if the input is some other attribute. fn get_path(attr: &Attribute) -> Result<Option<Path>> { if !attr.path.is_ident("path") { return Ok(None); } match attr.parse_meta()? { Meta::NameValue(MetaNameValue { lit: Lit::Str(lit_str), .. }) => { lit_str.parse().map(Some) } _ => { let error_span = attr.bracket_token.span; let message = "expected #[path = \"...\"]"; Err(Error::new(error_span, message)) } } }
pub fn span(&self) -> Span
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pub fn set_span(&mut self, span: Span)
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Trait Implementations
impl Token for LitStr
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impl Parse for LitStr
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fn parse(input: ParseStream) -> Result<Self>
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impl Clone for LitStr
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fn clone(&self) -> LitStr
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fn clone_from(&mut self, source: &Self)
1.0.0[src]
Performs copy-assignment from source
. Read more
impl PartialEq<LitStr> for LitStr
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fn eq(&self, other: &Self) -> bool
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#[must_use]
fn ne(&self, other: &Rhs) -> bool
1.0.0[src]
#[must_use]
fn ne(&self, other: &Rhs) -> boolThis method tests for !=
.
impl Eq for LitStr
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impl From<LitStr> for Lit
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impl Hash for LitStr
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fn hash<H>(&self, state: &mut H) where
H: Hasher,
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H: Hasher,
fn hash_slice<H>(data: &[Self], state: &mut H) where
H: Hasher,
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H: Hasher,
Feeds a slice of this type into the given [Hasher
]. Read more
impl Debug for LitStr
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impl ToTokens for LitStr
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fn to_tokens(&self, tokens: &mut TokenStream)
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fn into_token_stream(self) -> TokenStream
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Convert self
directly into a TokenStream
object. Read more
Auto Trait Implementations
Blanket Implementations
impl<K> Token for K where
K: CustomKeyword,
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K: CustomKeyword,
impl<T> Spanned for T where
T: ToTokens,
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T: ToTokens,
impl<T, U> Into for T where
U: From<T>,
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U: From<T>,
impl<T> From for T
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impl<T> ToOwned for T where
T: Clone,
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T: Clone,
impl<T, U> TryFrom for T where
U: Into<T>,
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U: Into<T>,
type Error = !
🔬 This is a nightly-only experimental API. (
try_from
)The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T> Borrow for T where
T: ?Sized,
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T: ?Sized,
impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,
impl<T> BorrowMut for T where
T: ?Sized,
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T: ?Sized,
fn borrow_mut(&mut self) -> &mut T
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impl<T, U> TryInto for T where
U: TryFrom<T>,
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U: TryFrom<T>,