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use super::Error;
use crate::parsing;
use pct_str::PctStr;
use std::cmp::{Ord, Ordering, PartialOrd};
use std::convert::TryFrom;
use std::hash::{Hash, Hasher};
use std::{cmp, fmt};
#[derive(Clone, Copy)]
pub struct Fragment<'a> {
pub(crate) data: &'a [u8],
}
impl<'a> Fragment<'a> {
#[inline]
pub fn as_bytes(&self) -> &[u8] {
self.data
}
#[inline]
pub fn as_str(&self) -> &str {
unsafe { std::str::from_utf8_unchecked(self.data) }
}
#[inline]
pub fn as_pct_str(&self) -> &PctStr {
unsafe { PctStr::new_unchecked(self.as_str()) }
}
#[inline]
pub fn is_empty(&self) -> bool {
self.data.is_empty()
}
}
impl<'a> AsRef<[u8]> for Fragment<'a> {
#[inline]
fn as_ref(&self) -> &[u8] {
self.as_bytes()
}
}
impl<'a> TryFrom<&'a str> for Fragment<'a> {
type Error = Error;
#[inline]
fn try_from(str: &'a str) -> Result<Fragment<'a>, Error> {
let fragment_len = parsing::parse_fragment(str.as_ref(), 0)?;
if fragment_len < str.len() {
Err(Error::InvalidFragment)
} else {
Ok(Fragment { data: str.as_ref() })
}
}
}
impl<'a> fmt::Display for Fragment<'a> {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
self.as_str().fmt(f)
}
}
impl<'a> fmt::Debug for Fragment<'a> {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
self.as_str().fmt(f)
}
}
impl<'a> cmp::PartialEq for Fragment<'a> {
fn eq(&self, other: &Fragment) -> bool {
self.as_pct_str() == other.as_pct_str()
}
}
impl<'a> Eq for Fragment<'a> {}
impl<'a> cmp::PartialEq<&'a str> for Fragment<'a> {
fn eq(&self, other: &&'a str) -> bool {
self.as_str() == *other
}
}
impl<'a> PartialOrd for Fragment<'a> {
fn partial_cmp(&self, other: &Fragment<'a>) -> Option<Ordering> {
Some(self.cmp(other))
}
}
impl<'a> Ord for Fragment<'a> {
fn cmp(&self, other: &Fragment<'a>) -> Ordering {
self.as_pct_str().cmp(other.as_pct_str())
}
}
impl<'a> Hash for Fragment<'a> {
fn hash<H: Hasher>(&self, hasher: &mut H) {
self.as_pct_str().hash(hasher)
}
}