impl<T> Spanned<T>

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)),
        })
    }
}
#
# type DetailedDependency = std::collections::BTreeMap<String, String>;

fn span(&self) -> Range<usize>

Byte range

fn into_inner(self) -> T

Consumes the spanned value and returns the contained value.

fn get_ref(&self) -> &T

Returns a reference to the contained value.

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

Returns a mutable reference to the contained value.