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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 } }