Struct serde_spanned::Spanned

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pub struct Spanned<T> { /* private fields */ }
Expand description

A spanned value, indicating the range at which it is defined in the source.

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impl<T> Spanned<T>

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pub fn new(range: Range<usize>, value: T) -> Self

Create a spanned value encompassing the given byte range.

§Example

Transposing a Spanned<Enum<T>> into Enum<Spanned<T>>:

use serde::de::{Deserialize, Deserializer};
use serde_untagged::UntaggedEnumVisitor;
use toml::Spanned;

pub enum Dependency {
    Simple(Spanned<String>),
    Detailed(Spanned<DetailedDependency>),
}

impl<'de> Deserialize<'de> for Dependency {
    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
    where
        D: Deserializer<'de>,
    {
        enum DependencyKind {
            Simple(String),
            Detailed(DetailedDependency),
        }

        impl<'de> Deserialize<'de> for DependencyKind {
            fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
            where
                D: Deserializer<'de>,
            {
                UntaggedEnumVisitor::new()
                    .expecting(
                        "a version string like \"0.9.8\" or a \
                            detailed dependency like { version = \"0.9.8\" }",
                    )
                    .string(|value| Ok(DependencyKind::Simple(value.to_owned())))
                    .map(|value| value.deserialize().map(DependencyKind::Detailed))
                    .deserialize(deserializer)
            }
        }

        let spanned: Spanned<DependencyKind> = Deserialize::deserialize(deserializer)?;
        let range = spanned.span();
        Ok(match spanned.into_inner() {
            DependencyKind::Simple(simple) => Dependency::Simple(Spanned::new(range, simple)),
            DependencyKind::Detailed(detailed) => Dependency::Detailed(Spanned::new(range, detailed)),
        })
    }
}
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pub fn span(&self) -> Range<usize>

Byte range

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pub fn into_inner(self) -> T

Consumes the spanned value and returns the contained value.

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pub fn get_ref(&self) -> &T

Returns a reference to the contained value.

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pub fn get_mut(&mut self) -> &mut T

Returns a mutable reference to the contained value.

Trait Implementations§

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impl<T> AsMut<T> for Spanned<T>

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

Converts this type into a mutable reference of the (usually inferred) input type.
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impl<T> AsRef<T> for Spanned<T>

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fn as_ref(&self) -> &T

Converts this type into a shared reference of the (usually inferred) input type.
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impl Borrow<str> for Spanned<String>

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fn borrow(&self) -> &str

Immutably borrows from an owned value. Read more
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impl<T: Clone> Clone for Spanned<T>

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

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl<T: Debug> Debug for Spanned<T>

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

Formats the value using the given formatter. Read more
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impl<'de, T> Deserialize<'de> for Spanned<T>
where T: Deserialize<'de>,

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fn deserialize<D>(deserializer: D) -> Result<Spanned<T>, D::Error>
where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer. Read more
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impl<T: Hash> Hash for Spanned<T>

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

Feeds this value into the given Hasher. Read more
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fn hash_slice<H>(data: &[Self], state: &mut H)
where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
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impl<T: Ord> Ord for Spanned<T>

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fn cmp(&self, other: &Self) -> Ordering

This method returns an Ordering between self and other. Read more
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fn max(self, other: Self) -> Self
where Self: Sized,

Compares and returns the maximum of two values. Read more
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fn min(self, other: Self) -> Self
where Self: Sized,

Compares and returns the minimum of two values. Read more
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fn clamp(self, min: Self, max: Self) -> Self
where Self: Sized + PartialOrd,

Restrict a value to a certain interval. Read more
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impl<T: PartialEq> PartialEq for Spanned<T>

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

This method tests for self and other values to be equal, and is used by ==.
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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.
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impl<T: PartialOrd> PartialOrd for Spanned<T>

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fn partial_cmp(&self, other: &Self) -> Option<Ordering>

This method returns an ordering between self and other values if one exists. Read more
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fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator. Read more
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fn le(&self, other: &Rhs) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator. Read more
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fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator. Read more
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fn ge(&self, other: &Rhs) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator. Read more
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impl<T: Serialize> Serialize for Spanned<T>

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fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

Serialize this value into the given Serde serializer. Read more
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impl<T: Eq> Eq for Spanned<T>

Auto Trait Implementations§

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impl<T> Freeze for Spanned<T>
where T: Freeze,

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impl<T> RefUnwindSafe for Spanned<T>
where T: RefUnwindSafe,

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impl<T> Send for Spanned<T>
where T: Send,

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impl<T> Sync for Spanned<T>
where T: Sync,

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impl<T> Unpin for Spanned<T>
where T: Unpin,

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impl<T> UnwindSafe for Spanned<T>
where T: UnwindSafe,

Blanket Implementations§

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

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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default unsafe fn clone_to_uninit(&self, dst: *mut T)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dst. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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

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fn into(self) -> U

Calls U::from(self).

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

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

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<T> DeserializeOwned for T
where T: for<'de> Deserialize<'de>,