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use std::fmt;
use std::slice;
use itertools;
use super::ScalarCow;
#[derive(Clone, Debug, PartialEq)]
pub struct Path<'s>(Vec<ScalarCow<'s>>);
impl<'s> Path<'s> {
pub fn with_index<I: Into<ScalarCow<'s>>>(value: I) -> Self {
let indexes = vec![value.into()];
Path(indexes)
}
pub fn push<I: Into<ScalarCow<'s>>>(&mut self, value: I) {
self.0.push(value.into());
}
pub fn reserve(&mut self, additional: usize) {
self.0.reserve(additional);
}
pub fn iter(&self) -> PathIter<'_, '_> {
PathIter(self.0.iter())
}
#[inline]
pub fn as_slice(&self) -> &[ScalarCow<'s>] {
self.0.as_slice()
}
}
impl<'s> Extend<ScalarCow<'s>> for Path<'s> {
fn extend<T: IntoIterator<Item = ScalarCow<'s>>>(&mut self, iter: T) {
self.0.extend(iter);
}
}
impl<'s> ::std::ops::Deref for Path<'s> {
type Target = [ScalarCow<'s>];
#[inline]
fn deref(&self) -> &Self::Target {
&self.0
}
}
impl<'s> ::std::borrow::Borrow<[ScalarCow<'s>]> for Path<'s> {
#[inline]
fn borrow(&self) -> &[ScalarCow<'s>] {
self
}
}
impl<'s> AsRef<[ScalarCow<'s>]> for Path<'s> {
#[inline]
fn as_ref(&self) -> &[ScalarCow<'s>] {
self
}
}
impl<'s> fmt::Display for Path<'s> {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
let data = itertools::join(self.iter().map(ScalarCow::render), ".");
write!(f, "{}", data)
}
}
#[derive(Debug)]
pub struct PathIter<'i, 's: 'i>(slice::Iter<'i, ScalarCow<'s>>);
impl<'i, 's: 'i> Iterator for PathIter<'i, 's> {
type Item = &'i ScalarCow<'s>;
#[inline]
fn next(&mut self) -> Option<&'i ScalarCow<'s>> {
self.0.next()
}
#[inline]
fn size_hint(&self) -> (usize, Option<usize>) {
self.0.size_hint()
}
#[inline]
fn count(self) -> usize {
self.0.count()
}
}
impl<'i, 's: 'i> ExactSizeIterator for PathIter<'i, 's> {
#[inline]
fn len(&self) -> usize {
self.0.len()
}
}
pub type PathRef<'p, 's> = &'p [ScalarCow<'s>];