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//! A private module for sealed trait and internal implementations.
//!
//! Note that this MUST be a private module.
//! See [Rust API Guidelines][sealed-trait] about the necessity of being private.
//!
//! [sealed-trait]:
//! https://rust-lang.github.io/api-guidelines/future-proofing.html#sealed-traits-protect-against-downstream-implementations-c-sealed
use crate::parser::char::is_ucschar;
use crate::spec::{IriSpec, UriSpec};
/// A trait to prohibit user-defined types from implementing `Spec`.
///
/// About sealed trait, see [Rust API Guidelines][future-proofing].
///
/// [future-proofing]: https://rust-lang.github.io/api-guidelines/future-proofing.html
pub trait Sealed: SpecInternal {}
impl Sealed for IriSpec {}
impl Sealed for UriSpec {}
/// Internal implementations for spec types.
pub trait SpecInternal: Sized {
/// Checks if the given non-ASCII character matches `unreserved` or `iunreserved` rule.
#[must_use]
fn is_nonascii_char_unreserved(c: char) -> bool;
/// Checks if the given character matches `iprivate` rule.
#[must_use]
fn is_nonascii_char_private(c: char) -> bool;
}
impl SpecInternal for IriSpec {
#[inline]
fn is_nonascii_char_unreserved(c: char) -> bool {
is_ucschar(c)
}
fn is_nonascii_char_private(c: char) -> bool {
matches!(
u32::from(c),
0xE000..=0xF8FF |
0xF_0000..=0xF_FFFD |
0x10_0000..=0x10_FFFD
)
}
}
impl SpecInternal for UriSpec {
#[inline]
fn is_nonascii_char_unreserved(_: char) -> bool {
false
}
#[inline]
fn is_nonascii_char_private(_: char) -> bool {
false
}
}
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