Struct miniconf::KeyLookup

pub struct KeyLookup {
    pub len: NonZero<usize>,
    pub names: Option<&'static [&'static str]>,
}

Data to look up field names and convert to indices

This struct used together with crate::TreeKey.

Fields

len: NonZero<usize>

The number of top-level nodes.

This is used by impl Keys for Packed.

names: Option<&'static [&'static str]>

Node names, if any.

If nodes have names, this is a slice of them. If it is Some, it’s .len() is guaranteed to be LEN.

Implementations

impl KeyLookup

pub const fn homogeneous(len: usize) -> Self

Return a homogenenous unnamed KeyLookup

pub fn lookup(&self, index: usize) -> Result<Option<&'static str>, Traversal>

Perform a index-to-name lookup

pub fn clamp(&self, index: usize) -> Result<usize, Traversal>

Check that index is within range