/src/fontations/read-fonts/generated/generated_ift.rs

Source
// THIS FILE IS AUTOGENERATED.
// Any changes to this file will be overwritten.
// For more information about how codegen works, see font-codegen/README.md

#[allow(unused_imports)]
use crate::codegen_prelude::*;

#[derive(Clone)]
pub enum Ift<'a> {
    Format1(PatchMapFormat1<'a>),
    Format2(PatchMapFormat2<'a>),
}

impl Default for Ift<'_> {
    fn default() -> Self {
        Self::Format1(Default::default())
    }
}

impl<'a> Ift<'a> {
    ///Return the `FontData` used to resolve offsets for this table.
    pub fn offset_data(&self) -> FontData<'a> {
        match self {
            Self::Format1(item) => item.offset_data(),
            Self::Format2(item) => item.offset_data(),
        }
    }

    /// Format identifier: format = 1
    pub fn format(&self) -> u8 {
        match self {
            Self::Format1(item) => item.format(),
            Self::Format2(item) => item.format(),
        }
    }

    pub fn field_flags(&self) -> PatchMapFieldPresenceFlags {
        match self {
            Self::Format1(item) => item.field_flags(),
            Self::Format2(item) => item.field_flags(),
        }
    }

    /// Unique ID that identifies compatible patches.
    pub fn compatibility_id(&self) -> CompatibilityId {
        match self {
            Self::Format1(item) => item.compatibility_id(),
            Self::Format2(item) => item.compatibility_id(),
        }
    }

    pub fn url_template_length(&self) -> u16 {
        match self {
            Self::Format1(item) => item.url_template_length(),
            Self::Format2(item) => item.url_template_length(),
        }
    }

    pub fn url_template(&self) -> &'a [u8] {
        match self {
            Self::Format1(item) => item.url_template(),
            Self::Format2(item) => item.url_template(),
        }
    }

    pub fn cff_charstrings_offset(&self) -> Option<u32> {
        match self {
            Self::Format1(item) => item.cff_charstrings_offset(),
            Self::Format2(item) => item.cff_charstrings_offset(),
        }
    }

    pub fn cff2_charstrings_offset(&self) -> Option<u32> {
        match self {
            Self::Format1(item) => item.cff2_charstrings_offset(),
            Self::Format2(item) => item.cff2_charstrings_offset(),
        }
    }
}

impl ReadArgs for Ift<'_> {
    type Args = ();
}

impl<'a> FontRead<'a> for Ift<'a> {
    fn read_with_args(data: FontData<'a>, _: ()) -> Result<Self, ReadError> {
        let format: u8 = data.read_at(0usize)?;
        match format {
            PatchMapFormat1::FORMAT => Ok(Self::Format1(FontRead::read(data)?)),
            PatchMapFormat2::FORMAT => Ok(Self::Format2(FontRead::read(data)?)),
            other => Err(ReadError::InvalidFormat(other.into())),
        }
    }
}

impl<'a> MinByteRange<'a> for Ift<'a> {
    fn min_byte_range(&self) -> Range<usize> {
        match self {
            Self::Format1(item) => item.min_byte_range(),
            Self::Format2(item) => item.min_byte_range(),
        }
    }
    fn min_table_bytes(&self) -> &'a [u8] {
        match self {
            Self::Format1(item) => item.min_table_bytes(),
            Self::Format2(item) => item.min_table_bytes(),
        }
    }
}

#[cfg(feature = "experimental_traverse")]
impl<'a> Ift<'a> {
    fn dyn_inner<'b>(&'b self) -> &'b dyn SomeTable<'a> {
        match self {
            Self::Format1(table) => table,
            Self::Format2(table) => table,
        }
    }
}

#[cfg(feature = "experimental_traverse")]
impl std::fmt::Debug for Ift<'_> {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        self.dyn_inner().fmt(f)
    }
}

#[cfg(feature = "experimental_traverse")]
impl<'a> SomeTable<'a> for Ift<'a> {
    fn type_name(&self) -> &str {
        self.dyn_inner().type_name()
    }
    fn get_field(&self, idx: usize) -> Option<Field<'a>> {
        self.dyn_inner().get_field(idx)
    }
}

#[derive(Clone, Copy, Default, PartialEq, Eq, PartialOrd, Ord, Hash, bytemuck :: AnyBitPattern)]
#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
#[repr(transparent)]
pub struct PatchMapFieldPresenceFlags {
    bits: u8,
}

impl PatchMapFieldPresenceFlags {
    pub const CFF_CHARSTRINGS_OFFSET: Self = Self { bits: 0b00000001 };

    pub const CFF2_CHARSTRINGS_OFFSET: Self = Self { bits: 0b00000010 };
}

impl PatchMapFieldPresenceFlags {
    ///  Returns an empty set of flags.
    #[inline]
    pub const fn empty() -> Self {
        Self { bits: 0 }
    }

    /// Returns the set containing all flags.
    #[inline]
    pub const fn all() -> Self {
        Self {
            bits: Self::CFF_CHARSTRINGS_OFFSET.bits | Self::CFF2_CHARSTRINGS_OFFSET.bits,
        }
    }

    /// Returns the raw value of the flags currently stored.
    #[inline]
    pub const fn bits(&self) -> u8 {
        self.bits
    }

    /// Convert from underlying bit representation, unless that
    /// representation contains bits that do not correspond to a flag.
    #[inline]
    pub const fn from_bits(bits: u8) -> Option<Self> {
        if (bits & !Self::all().bits()) == 0 {
            Some(Self { bits })
        } else {
            None
        }
    }

    /// Convert from underlying bit representation, dropping any bits
    /// that do not correspond to flags.
    #[inline]
    pub const fn from_bits_truncate(bits: u8) -> Self {
        Self {
            bits: bits & Self::all().bits,
        }
    }

    /// Returns `true` if no flags are currently stored.
    #[inline]
    pub const fn is_empty(&self) -> bool {
        self.bits() == Self::empty().bits()
    }

    /// Returns `true` if there are flags common to both `self` and `other`.
    #[inline]
    pub const fn intersects(&self, other: Self) -> bool {
        !(Self {
            bits: self.bits & other.bits,
        })
        .is_empty()
    }

    /// Returns `true` if all of the flags in `other` are contained within `self`.
    #[inline]
    pub const fn contains(&self, other: Self) -> bool {
        (self.bits & other.bits) == other.bits
    }

    /// Inserts the specified flags in-place.
    #[inline]
    pub fn insert(&mut self, other: Self) {
        self.bits |= other.bits;
    }

    /// Removes the specified flags in-place.
    #[inline]
    pub fn remove(&mut self, other: Self) {
        self.bits &= !other.bits;
    }

    /// Toggles the specified flags in-place.
    #[inline]
    pub fn toggle(&mut self, other: Self) {
        self.bits ^= other.bits;
    }

    /// Returns the intersection between the flags in `self` and
    /// `other`.
    ///
    /// Specifically, the returned set contains only the flags which are
    /// present in *both* `self` *and* `other`.
    ///
    /// This is equivalent to using the `&` operator (e.g.
    /// [`ops::BitAnd`]), as in `flags & other`.
    ///
    /// [`ops::BitAnd`]: https://doc.rust-lang.org/std/ops/trait.BitAnd.html
    #[inline]
    #[must_use]
    pub const fn intersection(self, other: Self) -> Self {
        Self {
            bits: self.bits & other.bits,
        }
    }

    /// Returns the union of between the flags in `self` and `other`.
    ///
    /// Specifically, the returned set contains all flags which are
    /// present in *either* `self` *or* `other`, including any which are
    /// present in both.
    ///
    /// This is equivalent to using the `|` operator (e.g.
    /// [`ops::BitOr`]), as in `flags | other`.
    ///
    /// [`ops::BitOr`]: https://doc.rust-lang.org/std/ops/trait.BitOr.html
    #[inline]
    #[must_use]
    pub const fn union(self, other: Self) -> Self {
        Self {
            bits: self.bits | other.bits,
        }
    }

    /// Returns the difference between the flags in `self` and `other`.
    ///
    /// Specifically, the returned set contains all flags present in
    /// `self`, except for the ones present in `other`.
    ///
    /// It is also conceptually equivalent to the "bit-clear" operation:
    /// `flags & !other` (and this syntax is also supported).
    ///
    /// This is equivalent to using the `-` operator (e.g.
    /// [`ops::Sub`]), as in `flags - other`.
    ///
    /// [`ops::Sub`]: https://doc.rust-lang.org/std/ops/trait.Sub.html
    #[inline]
    #[must_use]
    pub const fn difference(self, other: Self) -> Self {
        Self {
            bits: self.bits & !other.bits,
        }
    }
}

impl std::ops::BitOr for PatchMapFieldPresenceFlags {
    type Output = Self;

    /// Returns the union of the two sets of flags.
    #[inline]
    fn bitor(self, other: PatchMapFieldPresenceFlags) -> Self {
        Self {
            bits: self.bits | other.bits,
        }
    }
}

impl std::ops::BitOrAssign for PatchMapFieldPresenceFlags {
    /// Adds the set of flags.
    #[inline]
    fn bitor_assign(&mut self, other: Self) {
        self.bits |= other.bits;
    }
}

impl std::ops::BitXor for PatchMapFieldPresenceFlags {
    type Output = Self;

    /// Returns the left flags, but with all the right flags toggled.
    #[inline]
    fn bitxor(self, other: Self) -> Self {
        Self {
            bits: self.bits ^ other.bits,
        }
    }
}

impl std::ops::BitXorAssign for PatchMapFieldPresenceFlags {
    /// Toggles the set of flags.
    #[inline]
    fn bitxor_assign(&mut self, other: Self) {
        self.bits ^= other.bits;
    }
}

impl std::ops::BitAnd for PatchMapFieldPresenceFlags {
    type Output = Self;

    /// Returns the intersection between the two sets of flags.
    #[inline]
    fn bitand(self, other: Self) -> Self {
        Self {
            bits: self.bits & other.bits,
        }
    }
}

impl std::ops::BitAndAssign for PatchMapFieldPresenceFlags {
    /// Disables all flags disabled in the set.
    #[inline]
    fn bitand_assign(&mut self, other: Self) {
        self.bits &= other.bits;
    }
}

impl std::ops::Sub for PatchMapFieldPresenceFlags {
    type Output = Self;

    /// Returns the set difference of the two sets of flags.
    #[inline]
    fn sub(self, other: Self) -> Self {
        Self {
            bits: self.bits & !other.bits,
        }
    }
}

impl std::ops::SubAssign for PatchMapFieldPresenceFlags {
    /// Disables all flags enabled in the set.
    #[inline]
    fn sub_assign(&mut self, other: Self) {
        self.bits &= !other.bits;
    }
}

impl std::ops::Not for PatchMapFieldPresenceFlags {
    type Output = Self;

    /// Returns the complement of this set of flags.
    #[inline]
    fn not(self) -> Self {
        Self { bits: !self.bits } & Self::all()
    }
}

impl std::fmt::Debug for PatchMapFieldPresenceFlags {
    fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
        let members: &[(&str, Self)] = &[
            ("CFF_CHARSTRINGS_OFFSET", Self::CFF_CHARSTRINGS_OFFSET),
            ("CFF2_CHARSTRINGS_OFFSET", Self::CFF2_CHARSTRINGS_OFFSET),
        ];
        let mut first = true;
        for (name, value) in members {
            if self.contains(*value) {
                if !first {
                    f.write_str(" | ")?;
                }
                first = false;
                f.write_str(name)?;
            }
        }
        if first {
            f.write_str("(empty)")?;
        }
        Ok(())
    }
}

impl std::fmt::Binary for PatchMapFieldPresenceFlags {
    fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
        std::fmt::Binary::fmt(&self.bits, f)
    }
}

impl std::fmt::Octal for PatchMapFieldPresenceFlags {
    fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
        std::fmt::Octal::fmt(&self.bits, f)
    }
}

impl std::fmt::LowerHex for PatchMapFieldPresenceFlags {
    fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
        std::fmt::LowerHex::fmt(&self.bits, f)
    }
}

impl std::fmt::UpperHex for PatchMapFieldPresenceFlags {
    fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
        std::fmt::UpperHex::fmt(&self.bits, f)
    }
}

impl font_types::Scalar for PatchMapFieldPresenceFlags {
    type Raw = <u8 as font_types::Scalar>::Raw;
    fn to_raw(self) -> Self::Raw {
        self.bits().to_raw()
    }
    fn from_raw(raw: Self::Raw) -> Self {
        let t = <u8>::from_raw(raw);
        Self::from_bits_truncate(t)
    }
}

#[cfg(feature = "experimental_traverse")]
impl<'a> From<PatchMapFieldPresenceFlags> for FieldType<'a> {
    fn from(src: PatchMapFieldPresenceFlags) -> FieldType<'a> {
        src.bits().into()
    }
}

impl Format<u8> for PatchMapFormat1<'_> {
    const FORMAT: u8 = 1;
}

impl<'a> MinByteRange<'a> for PatchMapFormat1<'a> {
    fn min_byte_range(&self) -> Range<usize> {
        0..self.patch_format_byte_range().end
    }
    fn min_table_bytes(&self) -> &'a [u8] {
        let range = self.min_byte_range();
        self.data.as_bytes().get(range).unwrap_or_default()
    }
}

impl ReadArgs for PatchMapFormat1<'_> {
    type Args = ();
}

impl<'a> FontRead<'a> for PatchMapFormat1<'a> {
    fn read_with_args(data: FontData<'a>, _: ()) -> Result<Self, ReadError> {
        #[allow(clippy::absurd_extreme_comparisons)]
        if data.len() < Self::MIN_SIZE {
            return Err(ReadError::OutOfBounds);
        }
        Ok(Self { data })
    }
}

/// [Patch Map Format Format 1](https://w3c.github.io/IFT/Overview.html#patch-map-format-1)
#[derive(Clone)]
pub struct PatchMapFormat1<'a> {
    data: FontData<'a>,
}

#[allow(clippy::needless_lifetimes)]
impl<'a> PatchMapFormat1<'a> {
    pub const MIN_SIZE: usize = (u8::RAW_BYTE_LEN
        + u8::RAW_BYTE_LEN
        + u8::RAW_BYTE_LEN
        + u8::RAW_BYTE_LEN
        + PatchMapFieldPresenceFlags::RAW_BYTE_LEN
        + CompatibilityId::RAW_BYTE_LEN
        + u16::RAW_BYTE_LEN
        + u16::RAW_BYTE_LEN
        + Uint24::RAW_BYTE_LEN
        + Offset32::RAW_BYTE_LEN
        + Offset32::RAW_BYTE_LEN
        + u16::RAW_BYTE_LEN
        + u8::RAW_BYTE_LEN);
    basic_table_impls!(impl_the_methods);

    /// Format identifier: format = 1
    pub fn format(&self) -> u8 {
        let range = self.format_byte_range();
        self.data.read_at(range.start).ok().unwrap()
    }

    pub fn field_flags(&self) -> PatchMapFieldPresenceFlags {
        let range = self.field_flags_byte_range();
        self.data.read_at(range.start).ok().unwrap()
    }

    /// Unique ID that identifies compatible patches.
    pub fn compatibility_id(&self) -> CompatibilityId {
        let range = self.compatibility_id_byte_range();
        self.data.read_at(range.start).ok().unwrap()
    }

    /// Largest entry index which appears in either the glyph map or feature map.
    pub fn max_entry_index(&self) -> u16 {
        let range = self.max_entry_index_byte_range();
        self.data.read_at(range.start).ok().unwrap()
    }

    /// Largest entry index which appears in the glyph map.
    pub fn max_glyph_map_entry_index(&self) -> u16 {
        let range = self.max_glyph_map_entry_index_byte_range();
        self.data.read_at(range.start).ok().unwrap()
    }

    pub fn glyph_count(&self) -> Uint24 {
        let range = self.glyph_count_byte_range();
        self.data.read_at(range.start).ok().unwrap()
    }

    /// Sub table that maps glyph ids to entry indices.
    pub fn glyph_map_offset(&self) -> Offset32 {
        let range = self.glyph_map_offset_byte_range();
        self.data.read_at(range.start).ok().unwrap()
    }

    /// Attempt to resolve [`glyph_map_offset`][Self::glyph_map_offset].
    pub fn glyph_map(&self) -> Result<GlyphMap<'a>, ReadError> {
        let data = self.data;
        let args = (self.glyph_count(), self.max_entry_index());
        self.glyph_map_offset().resolve_with_args(data, args)
    }

    /// Sub table that maps feature and glyph ids to entry indices.
    pub fn feature_map_offset(&self) -> Nullable<Offset32> {
        let range = self.feature_map_offset_byte_range();
        self.data.read_at(range.start).ok().unwrap()
    }

    /// Attempt to resolve [`feature_map_offset`][Self::feature_map_offset].
    pub fn feature_map(&self) -> Option<Result<FeatureMap<'a>, ReadError>> {
        let data = self.data;
        let args = self.max_entry_index();
        self.feature_map_offset().resolve_with_args(data, args)
    }

    pub fn applied_entries_bitmap(&self) -> &'a [u8] {
        let range = self.applied_entries_bitmap_byte_range();
        self.data.read_array(range).ok().unwrap_or_default()
    }

    pub fn url_template_length(&self) -> u16 {
        let range = self.url_template_length_byte_range();
        self.data.read_at(range.start).ok().unwrap_or_default()
    }

    pub fn url_template(&self) -> &'a [u8] {
        let range = self.url_template_byte_range();
        self.data.read_array(range).ok().unwrap_or_default()
    }

    /// Patch format number for patches referenced by this mapping.
    pub fn patch_format(&self) -> u8 {
        let range = self.patch_format_byte_range();
        self.data.read_at(range.start).ok().unwrap_or_default()
    }

    pub fn cff_charstrings_offset(&self) -> Option<u32> {
        let range = self.cff_charstrings_offset_byte_range();
        (!range.is_empty())
            .then(|| self.data.read_at(range.start).ok())
            .flatten()
    }

    pub fn cff2_charstrings_offset(&self) -> Option<u32> {
        let range = self.cff2_charstrings_offset_byte_range();
        (!range.is_empty())
            .then(|| self.data.read_at(range.start).ok())
            .flatten()
    }

    pub fn format_byte_range(&self) -> Range<usize> {
        let start = 0;
        let end = start + u8::RAW_BYTE_LEN;
        start..end
    }

    pub fn _reserved_0_byte_range(&self) -> Range<usize> {
        let start = self.format_byte_range().end;
        let end = start + u8::RAW_BYTE_LEN;
        start..end
    }

    pub fn _reserved_1_byte_range(&self) -> Range<usize> {
        let start = self._reserved_0_byte_range().end;
        let end = start + u8::RAW_BYTE_LEN;
        start..end
    }

    pub fn _reserved_2_byte_range(&self) -> Range<usize> {
        let start = self._reserved_1_byte_range().end;
        let end = start + u8::RAW_BYTE_LEN;
        start..end
    }

    pub fn field_flags_byte_range(&self) -> Range<usize> {
        let start = self._reserved_2_byte_range().end;
        let end = start + PatchMapFieldPresenceFlags::RAW_BYTE_LEN;
        start..end
    }

    pub fn compatibility_id_byte_range(&self) -> Range<usize> {
        let start = self.field_flags_byte_range().end;
        let end = start + CompatibilityId::RAW_BYTE_LEN;
        start..end
    }

    pub fn max_entry_index_byte_range(&self) -> Range<usize> {
        let start = self.compatibility_id_byte_range().end;
        let end = start + u16::RAW_BYTE_LEN;
        start..end
    }

    pub fn max_glyph_map_entry_index_byte_range(&self) -> Range<usize> {
        let start = self.max_entry_index_byte_range().end;
        let end = start + u16::RAW_BYTE_LEN;
        start..end
    }

    pub fn glyph_count_byte_range(&self) -> Range<usize> {
        let start = self.max_glyph_map_entry_index_byte_range().end;
        let end = start + Uint24::RAW_BYTE_LEN;
        start..end
    }

    pub fn glyph_map_offset_byte_range(&self) -> Range<usize> {
        let start = self.glyph_count_byte_range().end;
        let end = start + Offset32::RAW_BYTE_LEN;
        start..end
    }

    pub fn feature_map_offset_byte_range(&self) -> Range<usize> {
        let start = self.glyph_map_offset_byte_range().end;
        let end = start + Offset32::RAW_BYTE_LEN;
        start..end
    }

    pub fn applied_entries_bitmap_byte_range(&self) -> Range<usize> {
        let max_entry_index = self.max_entry_index();
        let start = self.feature_map_offset_byte_range().end;
        let end = start
            + (transforms::max_value_bitmap_len(max_entry_index)).saturating_mul(u8::RAW_BYTE_LEN);
        start..end
    }

    pub fn url_template_length_byte_range(&self) -> Range<usize> {
        let start = self.applied_entries_bitmap_byte_range().end;
        let end = start + u16::RAW_BYTE_LEN;
        start..end
    }

    pub fn url_template_byte_range(&self) -> Range<usize> {
        let url_template_length = self.url_template_length();
        let start = self.url_template_length_byte_range().end;
        let end =
            start + (transforms::to_usize(url_template_length)).saturating_mul(u8::RAW_BYTE_LEN);
        start..end
    }

    pub fn patch_format_byte_range(&self) -> Range<usize> {
        let start = self.url_template_byte_range().end;
        let end = start + u8::RAW_BYTE_LEN;
        start..end
    }

    pub fn cff_charstrings_offset_byte_range(&self) -> Range<usize> {
        let start = self.patch_format_byte_range().end;
        let end = if self
            .field_flags()
            .contains(PatchMapFieldPresenceFlags::CFF_CHARSTRINGS_OFFSET)
        {
            start + u32::RAW_BYTE_LEN
        } else {
            start
        };
        start..end
    }

    pub fn cff2_charstrings_offset_byte_range(&self) -> Range<usize> {
        let start = self.cff_charstrings_offset_byte_range().end;
        let end = if self
            .field_flags()
            .contains(PatchMapFieldPresenceFlags::CFF2_CHARSTRINGS_OFFSET)
        {
            start + u32::RAW_BYTE_LEN
        } else {
            start
        };
        start..end
    }
}

const _: () = assert!(FontData::default_data_long_enough(
    PatchMapFormat1::MIN_SIZE
));

impl Default for PatchMapFormat1<'_> {
    fn default() -> Self {
        Self {
            data: FontData::default_format_1_u8_table_data(),
        }
    }
}

#[cfg(feature = "experimental_traverse")]
impl<'a> SomeTable<'a> for PatchMapFormat1<'a> {
    fn type_name(&self) -> &str {
        "PatchMapFormat1"
    }
    fn get_field(&self, idx: usize) -> Option<Field<'a>> {
        match idx {
            0usize => Some(Field::new("format", self.format())),
            1usize => Some(Field::new("field_flags", self.field_flags())),
            2usize => Some(Field::new(
                "compatibility_id",
                traversal::FieldType::Unknown,
            )),
            3usize => Some(Field::new("max_entry_index", self.max_entry_index())),
            4usize => Some(Field::new(
                "max_glyph_map_entry_index",
                self.max_glyph_map_entry_index(),
            )),
            5usize => Some(Field::new("glyph_count", self.glyph_count())),
            6usize => Some(Field::new(
                "glyph_map_offset",
                FieldType::offset(self.glyph_map_offset(), self.glyph_map()),
            )),
            7usize => Some(Field::new(
                "feature_map_offset",
                FieldType::offset(self.feature_map_offset(), self.feature_map()),
            )),
            8usize => Some(Field::new(
                "applied_entries_bitmap",
                self.applied_entries_bitmap(),
            )),
            9usize => Some(Field::new(
                "url_template_length",
                self.url_template_length(),
            )),
            10usize => Some(Field::new("url_template", self.url_template())),
            11usize => Some(Field::new("patch_format", self.patch_format())),
            12usize
                if self
                    .field_flags()
                    .contains(PatchMapFieldPresenceFlags::CFF_CHARSTRINGS_OFFSET) =>
            {
                Some(Field::new(
                    "cff_charstrings_offset",
                    self.cff_charstrings_offset().unwrap(),
                ))
            }
            13usize
                if self
                    .field_flags()
                    .contains(PatchMapFieldPresenceFlags::CFF2_CHARSTRINGS_OFFSET) =>
            {
                Some(Field::new(
                    "cff2_charstrings_offset",
                    self.cff2_charstrings_offset().unwrap(),
                ))
            }
            _ => None,
        }
    }
}

#[cfg(feature = "experimental_traverse")]
#[allow(clippy::needless_lifetimes)]
impl<'a> std::fmt::Debug for PatchMapFormat1<'a> {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        (self as &dyn SomeTable<'a>).fmt(f)
    }
}

impl<'a> MinByteRange<'a> for GlyphMap<'a> {
    fn min_byte_range(&self) -> Range<usize> {
        0..self.entry_index_byte_range().end
    }
    fn min_table_bytes(&self) -> &'a [u8] {
        let range = self.min_byte_range();
        self.data.as_bytes().get(range).unwrap_or_default()
    }
}

impl ReadArgs for GlyphMap<'_> {
    type Args = (Uint24, u16);
}

impl<'a> FontRead<'a> for GlyphMap<'a> {
    fn read_with_args(data: FontData<'a>, args: (Uint24, u16)) -> Result<Self, ReadError> {
        let (glyph_count, max_entry_index) = args;

        #[allow(clippy::absurd_extreme_comparisons)]
        if data.len() < Self::MIN_SIZE {
            return Err(ReadError::OutOfBounds);
        }
        Ok(Self {
            data,
            glyph_count,
            max_entry_index,
        })
    }
}

impl<'a> GlyphMap<'a> {
    /// A constructor that requires additional arguments.
    ///
    /// This type requires some external state in order to be
    /// parsed.
    pub fn read(
        data: FontData<'a>,
        glyph_count: Uint24,
        max_entry_index: u16,
    ) -> Result<Self, ReadError> {
        let args = (glyph_count, max_entry_index);
        Self::read_with_args(data, args)
    }
}

#[derive(Clone)]
pub struct GlyphMap<'a> {
    data: FontData<'a>,
    glyph_count: Uint24,
    max_entry_index: u16,
}

#[allow(clippy::needless_lifetimes)]
impl<'a> GlyphMap<'a> {
    pub const MIN_SIZE: usize = u16::RAW_BYTE_LEN;
    basic_table_impls!(impl_the_methods);

    pub fn first_mapped_glyph(&self) -> u16 {
        let range = self.first_mapped_glyph_byte_range();
        self.data.read_at(range.start).ok().unwrap()
    }

    pub fn entry_index(&self) -> ComputedArray<'a, U8Or16> {
        let range = self.entry_index_byte_range();
        self.data
            .read_with_args(range, self.max_entry_index())
            .unwrap_or_default()
    }

    pub(crate) fn glyph_count(&self) -> Uint24 {
        self.glyph_count
    }

    pub(crate) fn max_entry_index(&self) -> u16 {
        self.max_entry_index
    }

    pub fn first_mapped_glyph_byte_range(&self) -> Range<usize> {
        let start = 0;
        let end = start + u16::RAW_BYTE_LEN;
        start..end
    }

    pub fn entry_index_byte_range(&self) -> Range<usize> {
        let glyph_count = self.glyph_count();
        let first_mapped_glyph = self.first_mapped_glyph();
        let start = self.first_mapped_glyph_byte_range().end;
        let end = start
            + (transforms::subtract(glyph_count, first_mapped_glyph)).saturating_mul(
                <U8Or16 as ComputeSize>::compute_size(self.max_entry_index()).unwrap_or(0),
            );
        start..end
    }
}

const _: () = assert!(FontData::default_data_long_enough(GlyphMap::MIN_SIZE));

impl Default for GlyphMap<'_> {
    fn default() -> Self {
        Self {
            data: FontData::default_table_data(),
            glyph_count: Default::default(),
            max_entry_index: Default::default(),
        }
    }
}

#[cfg(feature = "experimental_traverse")]
impl<'a> SomeTable<'a> for GlyphMap<'a> {
    fn type_name(&self) -> &str {
        "GlyphMap"
    }
    fn get_field(&self, idx: usize) -> Option<Field<'a>> {
        match idx {
            0usize => Some(Field::new("first_mapped_glyph", self.first_mapped_glyph())),
            1usize => Some(Field::new("entry_index", traversal::FieldType::Unknown)),
            _ => None,
        }
    }
}

#[cfg(feature = "experimental_traverse")]
#[allow(clippy::needless_lifetimes)]
impl<'a> std::fmt::Debug for GlyphMap<'a> {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        (self as &dyn SomeTable<'a>).fmt(f)
    }
}

impl<'a> MinByteRange<'a> for FeatureMap<'a> {
    fn min_byte_range(&self) -> Range<usize> {
        0..self.entry_map_data_byte_range().end
    }
    fn min_table_bytes(&self) -> &'a [u8] {
        let range = self.min_byte_range();
        self.data.as_bytes().get(range).unwrap_or_default()
    }
}

impl ReadArgs for FeatureMap<'_> {
    type Args = u16;
}

impl<'a> FontRead<'a> for FeatureMap<'a> {
    fn read_with_args(data: FontData<'a>, args: u16) -> Result<Self, ReadError> {
        let max_entry_index = args;

        #[allow(clippy::absurd_extreme_comparisons)]
        if data.len() < Self::MIN_SIZE {
            return Err(ReadError::OutOfBounds);
        }
        Ok(Self {
            data,
            max_entry_index,
        })
    }
}

impl<'a> FeatureMap<'a> {
    /// A constructor that requires additional arguments.
    ///
    /// This type requires some external state in order to be
    /// parsed.
    pub fn read(data: FontData<'a>, max_entry_index: u16) -> Result<Self, ReadError> {
        let args = max_entry_index;
        Self::read_with_args(data, args)
    }
}

#[derive(Clone)]
pub struct FeatureMap<'a> {
    data: FontData<'a>,
    max_entry_index: u16,
}

#[allow(clippy::needless_lifetimes)]
impl<'a> FeatureMap<'a> {
    pub const MIN_SIZE: usize = u16::RAW_BYTE_LEN;
    basic_table_impls!(impl_the_methods);

    pub fn feature_count(&self) -> u16 {
        let range = self.feature_count_byte_range();
        self.data.read_at(range.start).ok().unwrap()
    }

    pub fn feature_records(&self) -> ComputedArray<'a, FeatureRecord> {
        let range = self.feature_records_byte_range();
        self.data
            .read_with_args(range, self.max_entry_index())
            .unwrap_or_default()
    }

    pub fn entry_map_data(&self) -> &'a [u8] {
        let range = self.entry_map_data_byte_range();
        self.data.read_array(range).ok().unwrap_or_default()
    }

    pub(crate) fn max_entry_index(&self) -> u16 {
        self.max_entry_index
    }

    pub fn feature_count_byte_range(&self) -> Range<usize> {
        let start = 0;
        let end = start + u16::RAW_BYTE_LEN;
        start..end
    }

    pub fn feature_records_byte_range(&self) -> Range<usize> {
        let feature_count = self.feature_count();
        let start = self.feature_count_byte_range().end;
        let end = start
            + (transforms::to_usize(feature_count)).saturating_mul(
                <FeatureRecord as ComputeSize>::compute_size(self.max_entry_index()).unwrap_or(0),
            );
        start..end
    }

    pub fn entry_map_data_byte_range(&self) -> Range<usize> {
        let start = self.feature_records_byte_range().end;
        let end =
            start + self.data.len().saturating_sub(start) / u8::RAW_BYTE_LEN * u8::RAW_BYTE_LEN;
        start..end
    }
}

const _: () = assert!(FontData::default_data_long_enough(FeatureMap::MIN_SIZE));

impl Default for FeatureMap<'_> {
    fn default() -> Self {
        Self {
            data: FontData::default_table_data(),
            max_entry_index: Default::default(),
        }
    }
}

#[cfg(feature = "experimental_traverse")]
impl<'a> SomeTable<'a> for FeatureMap<'a> {
    fn type_name(&self) -> &str {
        "FeatureMap"
    }
    fn get_field(&self, idx: usize) -> Option<Field<'a>> {
        match idx {
            0usize => Some(Field::new("feature_count", self.feature_count())),
            1usize => Some(Field::new("feature_records", traversal::FieldType::Unknown)),
            2usize => Some(Field::new("entry_map_data", self.entry_map_data())),
            _ => None,
        }
    }
}

#[cfg(feature = "experimental_traverse")]
#[allow(clippy::needless_lifetimes)]
impl<'a> std::fmt::Debug for FeatureMap<'a> {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        (self as &dyn SomeTable<'a>).fmt(f)
    }
}

#[derive(Clone, Debug)]
pub struct FeatureRecord {
    pub feature_tag: BigEndian<Tag>,
    pub first_new_entry_index: U8Or16,
    pub entry_map_count: U8Or16,
}

impl FeatureRecord {
    pub fn feature_tag(&self) -> Tag {
        self.feature_tag.get()
    }

    pub fn first_new_entry_index(&self) -> &U8Or16 {
        &self.first_new_entry_index
    }

    pub fn entry_map_count(&self) -> &U8Or16 {
        &self.entry_map_count
    }
}

impl ReadArgs for FeatureRecord {
    type Args = u16;
}

impl ComputeSize for FeatureRecord {
    #[allow(clippy::needless_question_mark)]
    fn compute_size(args: u16) -> Result<usize, ReadError> {
        let max_entry_index = args;
        let mut result = 0usize;
        result = result
            .checked_add(Tag::RAW_BYTE_LEN)
            .ok_or(ReadError::OutOfBounds)?;
        result = result
            .checked_add(<U8Or16 as ComputeSize>::compute_size(max_entry_index).unwrap_or(0))
            .ok_or(ReadError::OutOfBounds)?;
        result = result
            .checked_add(<U8Or16 as ComputeSize>::compute_size(max_entry_index).unwrap_or(0))
            .ok_or(ReadError::OutOfBounds)?;
        Ok(result)
    }
}

impl<'a> FontRead<'a> for FeatureRecord {
    fn read_with_args(data: FontData<'a>, args: u16) -> Result<Self, ReadError> {
        let mut cursor = data.cursor();
        let max_entry_index = args;
        Ok(Self {
            feature_tag: cursor.read_be()?,
            first_new_entry_index: cursor.read_with_args(max_entry_index)?,
            entry_map_count: cursor.read_with_args(max_entry_index)?,
        })
    }
}

#[allow(clippy::needless_lifetimes)]
impl<'a> FeatureRecord {
    /// A constructor that requires additional arguments.
    ///
    /// This type requires some external state in order to be
    /// parsed.
    pub fn read(data: FontData<'a>, max_entry_index: u16) -> Result<Self, ReadError> {
        let args = max_entry_index;
        Self::read_with_args(data, args)
    }
}

#[cfg(feature = "experimental_traverse")]
impl<'a> SomeRecord<'a> for FeatureRecord {
    fn traverse(self, data: FontData<'a>) -> RecordResolver<'a> {
        RecordResolver {
            name: "FeatureRecord",
            get_field: Box::new(move |idx, _data| match idx {
                0usize => Some(Field::new("feature_tag", self.feature_tag())),
                1usize => Some(Field::new(
                    "first_new_entry_index",
                    traversal::FieldType::Unknown,
                )),
                2usize => Some(Field::new("entry_map_count", traversal::FieldType::Unknown)),
                _ => None,
            }),
            data,
        }
    }
}

#[derive(Clone, Debug)]
pub struct EntryMapRecord {
    pub first_entry_index: U8Or16,
    pub last_entry_index: U8Or16,
}

impl EntryMapRecord {
    pub fn first_entry_index(&self) -> &U8Or16 {
        &self.first_entry_index
    }

    pub fn last_entry_index(&self) -> &U8Or16 {
        &self.last_entry_index
    }
}

impl ReadArgs for EntryMapRecord {
    type Args = u16;
}

impl ComputeSize for EntryMapRecord {
    #[allow(clippy::needless_question_mark)]
    fn compute_size(args: u16) -> Result<usize, ReadError> {
        let max_entry_index = args;
        let mut result = 0usize;
        result = result
            .checked_add(<U8Or16 as ComputeSize>::compute_size(max_entry_index).unwrap_or(0))
            .ok_or(ReadError::OutOfBounds)?;
        result = result
            .checked_add(<U8Or16 as ComputeSize>::compute_size(max_entry_index).unwrap_or(0))
            .ok_or(ReadError::OutOfBounds)?;
        Ok(result)
    }
}

impl<'a> FontRead<'a> for EntryMapRecord {
    fn read_with_args(data: FontData<'a>, args: u16) -> Result<Self, ReadError> {
        let mut cursor = data.cursor();
        let max_entry_index = args;
        Ok(Self {
            first_entry_index: cursor.read_with_args(max_entry_index)?,
            last_entry_index: cursor.read_with_args(max_entry_index)?,
        })
    }
}

#[allow(clippy::needless_lifetimes)]
impl<'a> EntryMapRecord {
    /// A constructor that requires additional arguments.
    ///
    /// This type requires some external state in order to be
    /// parsed.
    pub fn read(data: FontData<'a>, max_entry_index: u16) -> Result<Self, ReadError> {
        let args = max_entry_index;
        Self::read_with_args(data, args)
    }
}

#[cfg(feature = "experimental_traverse")]
impl<'a> SomeRecord<'a> for EntryMapRecord {
    fn traverse(self, data: FontData<'a>) -> RecordResolver<'a> {
        RecordResolver {
            name: "EntryMapRecord",
            get_field: Box::new(move |idx, _data| match idx {
                0usize => Some(Field::new(
                    "first_entry_index",
                    traversal::FieldType::Unknown,
                )),
                1usize => Some(Field::new(
                    "last_entry_index",
                    traversal::FieldType::Unknown,
                )),
                _ => None,
            }),
            data,
        }
    }
}

impl Format<u8> for PatchMapFormat2<'_> {
    const FORMAT: u8 = 2;
}

impl<'a> MinByteRange<'a> for PatchMapFormat2<'a> {
    fn min_byte_range(&self) -> Range<usize> {
        0..self.url_template_byte_range().end
    }
    fn min_table_bytes(&self) -> &'a [u8] {
        let range = self.min_byte_range();
        self.data.as_bytes().get(range).unwrap_or_default()
    }
}

impl ReadArgs for PatchMapFormat2<'_> {
    type Args = ();
}

impl<'a> FontRead<'a> for PatchMapFormat2<'a> {
    fn read_with_args(data: FontData<'a>, _: ()) -> Result<Self, ReadError> {
        #[allow(clippy::absurd_extreme_comparisons)]
        if data.len() < Self::MIN_SIZE {
            return Err(ReadError::OutOfBounds);
        }
        Ok(Self { data })
    }
}

/// [Patch Map Format Format 2](https://w3c.github.io/IFT/Overview.html#patch-map-format-2)
#[derive(Clone)]
pub struct PatchMapFormat2<'a> {
    data: FontData<'a>,
}

#[allow(clippy::needless_lifetimes)]
impl<'a> PatchMapFormat2<'a> {
    pub const MIN_SIZE: usize = (u8::RAW_BYTE_LEN
        + u8::RAW_BYTE_LEN
        + u8::RAW_BYTE_LEN
        + u8::RAW_BYTE_LEN
        + PatchMapFieldPresenceFlags::RAW_BYTE_LEN
        + CompatibilityId::RAW_BYTE_LEN
        + u8::RAW_BYTE_LEN
        + Uint24::RAW_BYTE_LEN
        + Offset32::RAW_BYTE_LEN
        + Offset32::RAW_BYTE_LEN
        + u16::RAW_BYTE_LEN);
    basic_table_impls!(impl_the_methods);

    /// Format identifier: format = 2
    pub fn format(&self) -> u8 {
        let range = self.format_byte_range();
        self.data.read_at(range.start).ok().unwrap()
    }

    pub fn field_flags(&self) -> PatchMapFieldPresenceFlags {
        let range = self.field_flags_byte_range();
        self.data.read_at(range.start).ok().unwrap()
    }

    /// Unique ID that identifies compatible patches.
    pub fn compatibility_id(&self) -> CompatibilityId {
        let range = self.compatibility_id_byte_range();
        self.data.read_at(range.start).ok().unwrap()
    }

    /// Patch format number for patches referenced by this mapping.
    pub fn default_patch_format(&self) -> u8 {
        let range = self.default_patch_format_byte_range();
        self.data.read_at(range.start).ok().unwrap()
    }

    pub fn entry_count(&self) -> Uint24 {
        let range = self.entry_count_byte_range();
        self.data.read_at(range.start).ok().unwrap()
    }

    pub fn entries_offset(&self) -> Offset32 {
        let range = self.entries_offset_byte_range();
        self.data.read_at(range.start).ok().unwrap()
    }

    /// Attempt to resolve [`entries_offset`][Self::entries_offset].
    pub fn entries(&self) -> Result<MappingEntries<'a>, ReadError> {
        let data = self.data;
        self.entries_offset().resolve(data)
    }

    pub fn entry_id_string_data_offset(&self) -> Nullable<Offset32> {
        let range = self.entry_id_string_data_offset_byte_range();
        self.data.read_at(range.start).ok().unwrap()
    }

    /// Attempt to resolve [`entry_id_string_data_offset`][Self::entry_id_string_data_offset].
    pub fn entry_id_string_data(&self) -> Option<Result<IdStringData<'a>, ReadError>> {
        let data = self.data;
        self.entry_id_string_data_offset().resolve(data)
    }

    pub fn url_template_length(&self) -> u16 {
        let range = self.url_template_length_byte_range();
        self.data.read_at(range.start).ok().unwrap()
    }

    pub fn url_template(&self) -> &'a [u8] {
        let range = self.url_template_byte_range();
        self.data.read_array(range).ok().unwrap_or_default()
    }

    pub fn cff_charstrings_offset(&self) -> Option<u32> {
        let range = self.cff_charstrings_offset_byte_range();
        (!range.is_empty())
            .then(|| self.data.read_at(range.start).ok())
            .flatten()
    }

    pub fn cff2_charstrings_offset(&self) -> Option<u32> {
        let range = self.cff2_charstrings_offset_byte_range();
        (!range.is_empty())
            .then(|| self.data.read_at(range.start).ok())
            .flatten()
    }

    pub fn format_byte_range(&self) -> Range<usize> {
        let start = 0;
        let end = start + u8::RAW_BYTE_LEN;
        start..end
    }

    pub fn _reserved_0_byte_range(&self) -> Range<usize> {
        let start = self.format_byte_range().end;
        let end = start + u8::RAW_BYTE_LEN;
        start..end
    }

    pub fn _reserved_1_byte_range(&self) -> Range<usize> {
        let start = self._reserved_0_byte_range().end;
        let end = start + u8::RAW_BYTE_LEN;
        start..end
    }

    pub fn _reserved_2_byte_range(&self) -> Range<usize> {
        let start = self._reserved_1_byte_range().end;
        let end = start + u8::RAW_BYTE_LEN;
        start..end
    }

    pub fn field_flags_byte_range(&self) -> Range<usize> {
        let start = self._reserved_2_byte_range().end;
        let end = start + PatchMapFieldPresenceFlags::RAW_BYTE_LEN;
        start..end
    }

    pub fn compatibility_id_byte_range(&self) -> Range<usize> {
        let start = self.field_flags_byte_range().end;
        let end = start + CompatibilityId::RAW_BYTE_LEN;
        start..end
    }

    pub fn default_patch_format_byte_range(&self) -> Range<usize> {
        let start = self.compatibility_id_byte_range().end;
        let end = start + u8::RAW_BYTE_LEN;
        start..end
    }

    pub fn entry_count_byte_range(&self) -> Range<usize> {
        let start = self.default_patch_format_byte_range().end;
        let end = start + Uint24::RAW_BYTE_LEN;
        start..end
    }

    pub fn entries_offset_byte_range(&self) -> Range<usize> {
        let start = self.entry_count_byte_range().end;
        let end = start + Offset32::RAW_BYTE_LEN;
        start..end
    }

    pub fn entry_id_string_data_offset_byte_range(&self) -> Range<usize> {
        let start = self.entries_offset_byte_range().end;
        let end = start + Offset32::RAW_BYTE_LEN;
        start..end
    }

    pub fn url_template_length_byte_range(&self) -> Range<usize> {
        let start = self.entry_id_string_data_offset_byte_range().end;
        let end = start + u16::RAW_BYTE_LEN;
        start..end
    }

    pub fn url_template_byte_range(&self) -> Range<usize> {
        let url_template_length = self.url_template_length();
        let start = self.url_template_length_byte_range().end;
        let end =
            start + (transforms::to_usize(url_template_length)).saturating_mul(u8::RAW_BYTE_LEN);
        start..end
    }

    pub fn cff_charstrings_offset_byte_range(&self) -> Range<usize> {
        let start = self.url_template_byte_range().end;
        let end = if self
            .field_flags()
            .contains(PatchMapFieldPresenceFlags::CFF_CHARSTRINGS_OFFSET)
        {
            start + u32::RAW_BYTE_LEN
        } else {
            start
        };
        start..end
    }

    pub fn cff2_charstrings_offset_byte_range(&self) -> Range<usize> {
        let start = self.cff_charstrings_offset_byte_range().end;
        let end = if self
            .field_flags()
            .contains(PatchMapFieldPresenceFlags::CFF2_CHARSTRINGS_OFFSET)
        {
            start + u32::RAW_BYTE_LEN
        } else {
            start
        };
        start..end
    }
}

#[cfg(feature = "experimental_traverse")]
impl<'a> SomeTable<'a> for PatchMapFormat2<'a> {
    fn type_name(&self) -> &str {
        "PatchMapFormat2"
    }
    fn get_field(&self, idx: usize) -> Option<Field<'a>> {
        match idx {
            0usize => Some(Field::new("format", self.format())),
            1usize => Some(Field::new("field_flags", self.field_flags())),
            2usize => Some(Field::new(
                "compatibility_id",
                traversal::FieldType::Unknown,
            )),
            3usize => Some(Field::new(
                "default_patch_format",
                self.default_patch_format(),
            )),
            4usize => Some(Field::new("entry_count", self.entry_count())),
            5usize => Some(Field::new(
                "entries_offset",
                FieldType::offset(self.entries_offset(), self.entries()),
            )),
            6usize => Some(Field::new(
                "entry_id_string_data_offset",
                FieldType::offset(
                    self.entry_id_string_data_offset(),
                    self.entry_id_string_data(),
                ),
            )),
            7usize => Some(Field::new(
                "url_template_length",
                self.url_template_length(),
            )),
            8usize => Some(Field::new("url_template", self.url_template())),
            9usize
                if self
                    .field_flags()
                    .contains(PatchMapFieldPresenceFlags::CFF_CHARSTRINGS_OFFSET) =>
            {
                Some(Field::new(
                    "cff_charstrings_offset",
                    self.cff_charstrings_offset().unwrap(),
                ))
            }
            10usize
                if self
                    .field_flags()
                    .contains(PatchMapFieldPresenceFlags::CFF2_CHARSTRINGS_OFFSET) =>
            {
                Some(Field::new(
                    "cff2_charstrings_offset",
                    self.cff2_charstrings_offset().unwrap(),
                ))
            }
            _ => None,
        }
    }
}

#[cfg(feature = "experimental_traverse")]
#[allow(clippy::needless_lifetimes)]
impl<'a> std::fmt::Debug for PatchMapFormat2<'a> {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        (self as &dyn SomeTable<'a>).fmt(f)
    }
}

impl<'a> MinByteRange<'a> for MappingEntries<'a> {
    fn min_byte_range(&self) -> Range<usize> {
        0..self.entry_data_byte_range().end
    }
    fn min_table_bytes(&self) -> &'a [u8] {
        let range = self.min_byte_range();
        self.data.as_bytes().get(range).unwrap_or_default()
    }
}

impl ReadArgs for MappingEntries<'_> {
    type Args = ();
}

impl<'a> FontRead<'a> for MappingEntries<'a> {
    fn read_with_args(data: FontData<'a>, _: ()) -> Result<Self, ReadError> {
        #[allow(clippy::absurd_extreme_comparisons)]
        if data.len() < Self::MIN_SIZE {
            return Err(ReadError::OutOfBounds);
        }
        Ok(Self { data })
    }
}

#[derive(Clone)]
pub struct MappingEntries<'a> {
    data: FontData<'a>,
}

#[allow(clippy::needless_lifetimes)]
impl<'a> MappingEntries<'a> {
    pub const MIN_SIZE: usize = 0;
    basic_table_impls!(impl_the_methods);

    pub fn entry_data(&self) -> &'a [u8] {
        let range = self.entry_data_byte_range();
        self.data.read_array(range).ok().unwrap_or_default()
    }

    pub fn entry_data_byte_range(&self) -> Range<usize> {
        let start = 0;
        let end =
            start + self.data.len().saturating_sub(start) / u8::RAW_BYTE_LEN * u8::RAW_BYTE_LEN;
        start..end
    }
}

#[allow(clippy::absurd_extreme_comparisons)]
const _: () = assert!(FontData::default_data_long_enough(MappingEntries::MIN_SIZE));

impl Default for MappingEntries<'_> {
    fn default() -> Self {
        Self {
            data: FontData::default_table_data(),
        }
    }
}

#[cfg(feature = "experimental_traverse")]
impl<'a> SomeTable<'a> for MappingEntries<'a> {
    fn type_name(&self) -> &str {
        "MappingEntries"
    }
    fn get_field(&self, idx: usize) -> Option<Field<'a>> {
        match idx {
            0usize => Some(Field::new("entry_data", self.entry_data())),
            _ => None,
        }
    }
}

#[cfg(feature = "experimental_traverse")]
#[allow(clippy::needless_lifetimes)]
impl<'a> std::fmt::Debug for MappingEntries<'a> {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        (self as &dyn SomeTable<'a>).fmt(f)
    }
}

impl<'a> MinByteRange<'a> for EntryData<'a> {
    fn min_byte_range(&self) -> Range<usize> {
        0..self.trailing_data_byte_range().end
    }
    fn min_table_bytes(&self) -> &'a [u8] {
        let range = self.min_byte_range();
        self.data.as_bytes().get(range).unwrap_or_default()
    }
}

impl ReadArgs for EntryData<'_> {
    type Args = ();
}

impl<'a> FontRead<'a> for EntryData<'a> {
    fn read_with_args(data: FontData<'a>, _: ()) -> Result<Self, ReadError> {
        #[allow(clippy::absurd_extreme_comparisons)]
        if data.len() < Self::MIN_SIZE {
            return Err(ReadError::OutOfBounds);
        }
        Ok(Self { data })
    }
}

#[derive(Clone)]
pub struct EntryData<'a> {
    data: FontData<'a>,
}

#[allow(clippy::needless_lifetimes)]
impl<'a> EntryData<'a> {
    pub const MIN_SIZE: usize = EntryFormatFlags::RAW_BYTE_LEN;
    basic_table_impls!(impl_the_methods);

    pub fn format_flags(&self) -> EntryFormatFlags {
        let range = self.format_flags_byte_range();
        self.data.read_at(range.start).ok().unwrap()
    }

    pub fn feature_count(&self) -> Option<u8> {
        let range = self.feature_count_byte_range();
        (!range.is_empty())
            .then(|| self.data.read_at(range.start).ok())
            .flatten()
    }

    pub fn feature_tags(&self) -> Option<&'a [BigEndian<Tag>]> {
        let range = self.feature_tags_byte_range();
        (!range.is_empty())
            .then(|| self.data.read_array(range).ok())
            .flatten()
    }

    pub fn design_space_count(&self) -> Option<u16> {
        let range = self.design_space_count_byte_range();
        (!range.is_empty())
            .then(|| self.data.read_at(range.start).ok())
            .flatten()
    }

    pub fn design_space_segments(&self) -> Option<&'a [DesignSpaceSegment]> {
        let range = self.design_space_segments_byte_range();
        (!range.is_empty())
            .then(|| self.data.read_array(range).ok())
            .flatten()
    }

    pub fn match_mode_and_count(&self) -> Option<MatchModeAndCount> {
        let range = self.match_mode_and_count_byte_range();
        (!range.is_empty())
            .then(|| self.data.read_at(range.start).ok())
            .flatten()
    }

    pub fn child_indices(&self) -> Option<&'a [BigEndian<Uint24>]> {
        let range = self.child_indices_byte_range();
        (!range.is_empty())
            .then(|| self.data.read_array(range).ok())
            .flatten()
    }

    pub fn format_flags_byte_range(&self) -> Range<usize> {
        let start = 0;
        let end = start + EntryFormatFlags::RAW_BYTE_LEN;
        start..end
    }

    pub fn feature_count_byte_range(&self) -> Range<usize> {
        let start = self.format_flags_byte_range().end;
        let end = if self
            .format_flags()
            .contains(EntryFormatFlags::FEATURES_AND_DESIGN_SPACE)
        {
            start + u8::RAW_BYTE_LEN
        } else {
            start
        };
        start..end
    }

    pub fn feature_tags_byte_range(&self) -> Range<usize> {
        let feature_count = self.feature_count().unwrap_or_default();
        let start = self.feature_count_byte_range().end;
        let end = if self
            .format_flags()
            .contains(EntryFormatFlags::FEATURES_AND_DESIGN_SPACE)
        {
            start + (transforms::to_usize(feature_count)).saturating_mul(Tag::RAW_BYTE_LEN)
        } else {
            start
        };
        start..end
    }

    pub fn design_space_count_byte_range(&self) -> Range<usize> {
        let start = self.feature_tags_byte_range().end;
        let end = if self
            .format_flags()
            .contains(EntryFormatFlags::FEATURES_AND_DESIGN_SPACE)
        {
            start + u16::RAW_BYTE_LEN
        } else {
            start
        };
        start..end
    }

    pub fn design_space_segments_byte_range(&self) -> Range<usize> {
        let design_space_count = self.design_space_count().unwrap_or_default();
        let start = self.design_space_count_byte_range().end;
        let end = if self
            .format_flags()
            .contains(EntryFormatFlags::FEATURES_AND_DESIGN_SPACE)
        {
            start
                + (transforms::to_usize(design_space_count))
                    .saturating_mul(DesignSpaceSegment::RAW_BYTE_LEN)
        } else {
            start
        };
        start..end
    }

    pub fn match_mode_and_count_byte_range(&self) -> Range<usize> {
        let start = self.design_space_segments_byte_range().end;
        let end = if self
            .format_flags()
            .contains(EntryFormatFlags::CHILD_INDICES)
        {
            start + MatchModeAndCount::RAW_BYTE_LEN
        } else {
            start
        };
        start..end
    }

    pub fn child_indices_byte_range(&self) -> Range<usize> {
        let match_mode_and_count = self.match_mode_and_count().unwrap_or_default();
        let start = self.match_mode_and_count_byte_range().end;
        let end = if self
            .format_flags()
            .contains(EntryFormatFlags::CHILD_INDICES)
        {
            start
                + (transforms::to_usize(match_mode_and_count)).saturating_mul(Uint24::RAW_BYTE_LEN)
        } else {
            start
        };
        start..end
    }

    pub fn trailing_data_byte_range(&self) -> Range<usize> {
        let start = self.child_indices_byte_range().end;
        let end =
            start + self.data.len().saturating_sub(start) / u8::RAW_BYTE_LEN * u8::RAW_BYTE_LEN;
        start..end
    }
}

const _: () = assert!(FontData::default_data_long_enough(EntryData::MIN_SIZE));

impl Default for EntryData<'_> {
    fn default() -> Self {
        Self {
            data: FontData::default_table_data(),
        }
    }
}

#[cfg(feature = "experimental_traverse")]
impl<'a> SomeTable<'a> for EntryData<'a> {
    fn type_name(&self) -> &str {
        "EntryData"
    }
    fn get_field(&self, idx: usize) -> Option<Field<'a>> {
        match idx {
            0usize => Some(Field::new("format_flags", self.format_flags())),
            1usize
                if self
                    .format_flags()
                    .contains(EntryFormatFlags::FEATURES_AND_DESIGN_SPACE) =>
            {
                Some(Field::new("feature_count", self.feature_count().unwrap()))
            }
            2usize
                if self
                    .format_flags()
                    .contains(EntryFormatFlags::FEATURES_AND_DESIGN_SPACE) =>
            {
                Some(Field::new("feature_tags", self.feature_tags().unwrap()))
            }
            3usize
                if self
                    .format_flags()
                    .contains(EntryFormatFlags::FEATURES_AND_DESIGN_SPACE) =>
            {
                Some(Field::new(
                    "design_space_count",
                    self.design_space_count().unwrap(),
                ))
            }
            4usize
                if self
                    .format_flags()
                    .contains(EntryFormatFlags::FEATURES_AND_DESIGN_SPACE) =>
            {
                Some(Field::new(
                    "design_space_segments",
                    traversal::FieldType::array_of_records(
                        stringify!(DesignSpaceSegment),
                        self.design_space_segments().unwrap(),
                        self.offset_data(),
                    ),
                ))
            }
            5usize
                if self
                    .format_flags()
                    .contains(EntryFormatFlags::CHILD_INDICES) =>
            {
                Some(Field::new(
                    "match_mode_and_count",
                    traversal::FieldType::Unknown,
                ))
            }
            6usize
                if self
                    .format_flags()
                    .contains(EntryFormatFlags::CHILD_INDICES) =>
            {
                Some(Field::new("child_indices", self.child_indices().unwrap()))
            }
            _ => None,
        }
    }
}

#[cfg(feature = "experimental_traverse")]
#[allow(clippy::needless_lifetimes)]
impl<'a> std::fmt::Debug for EntryData<'a> {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        (self as &dyn SomeTable<'a>).fmt(f)
    }
}

#[derive(Clone, Copy, Default, PartialEq, Eq, PartialOrd, Ord, Hash, bytemuck :: AnyBitPattern)]
#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
#[repr(transparent)]
pub struct EntryFormatFlags {
    bits: u8,
}

impl EntryFormatFlags {
    pub const FEATURES_AND_DESIGN_SPACE: Self = Self { bits: 0b00000001 };

    pub const CHILD_INDICES: Self = Self { bits: 0b00000010 };

    pub const ENTRY_ID_DELTA: Self = Self { bits: 0b00000100 };

    pub const PATCH_FORMAT: Self = Self { bits: 0b00001000 };

    pub const CODEPOINTS_BIT_1: Self = Self { bits: 0b00010000 };

    pub const CODEPOINTS_BIT_2: Self = Self { bits: 0b00100000 };

    pub const IGNORED: Self = Self { bits: 0b01000000 };

    pub const RESERVED: Self = Self { bits: 0b10000000 };
}

impl EntryFormatFlags {
    ///  Returns an empty set of flags.
    #[inline]
    pub const fn empty() -> Self {
        Self { bits: 0 }
    }

    /// Returns the set containing all flags.
    #[inline]
    pub const fn all() -> Self {
        Self {
            bits: Self::FEATURES_AND_DESIGN_SPACE.bits
                | Self::CHILD_INDICES.bits
                | Self::ENTRY_ID_DELTA.bits
                | Self::PATCH_FORMAT.bits
                | Self::CODEPOINTS_BIT_1.bits
                | Self::CODEPOINTS_BIT_2.bits
                | Self::IGNORED.bits
                | Self::RESERVED.bits,
        }
    }

    /// Returns the raw value of the flags currently stored.
    #[inline]
    pub const fn bits(&self) -> u8 {
        self.bits
    }

    /// Convert from underlying bit representation, unless that
    /// representation contains bits that do not correspond to a flag.
    #[inline]
    pub const fn from_bits(bits: u8) -> Option<Self> {
        if (bits & !Self::all().bits()) == 0 {
            Some(Self { bits })
        } else {
            None
        }
    }

    /// Convert from underlying bit representation, dropping any bits
    /// that do not correspond to flags.
    #[inline]
    pub const fn from_bits_truncate(bits: u8) -> Self {
        Self {
            bits: bits & Self::all().bits,
        }
    }

    /// Returns `true` if no flags are currently stored.
    #[inline]
    pub const fn is_empty(&self) -> bool {
        self.bits() == Self::empty().bits()
    }

    /// Returns `true` if there are flags common to both `self` and `other`.
    #[inline]
    pub const fn intersects(&self, other: Self) -> bool {
        !(Self {
            bits: self.bits & other.bits,
        })
        .is_empty()
    }

    /// Returns `true` if all of the flags in `other` are contained within `self`.
    #[inline]
    pub const fn contains(&self, other: Self) -> bool {
        (self.bits & other.bits) == other.bits
    }

    /// Inserts the specified flags in-place.
    #[inline]
    pub fn insert(&mut self, other: Self) {
        self.bits |= other.bits;
    }

    /// Removes the specified flags in-place.
    #[inline]
    pub fn remove(&mut self, other: Self) {
        self.bits &= !other.bits;
    }

    /// Toggles the specified flags in-place.
    #[inline]
    pub fn toggle(&mut self, other: Self) {
        self.bits ^= other.bits;
    }

    /// Returns the intersection between the flags in `self` and
    /// `other`.
    ///
    /// Specifically, the returned set contains only the flags which are
    /// present in *both* `self` *and* `other`.
    ///
    /// This is equivalent to using the `&` operator (e.g.
    /// [`ops::BitAnd`]), as in `flags & other`.
    ///
    /// [`ops::BitAnd`]: https://doc.rust-lang.org/std/ops/trait.BitAnd.html
    #[inline]
    #[must_use]
    pub const fn intersection(self, other: Self) -> Self {
        Self {
            bits: self.bits & other.bits,
        }
    }

    /// Returns the union of between the flags in `self` and `other`.
    ///
    /// Specifically, the returned set contains all flags which are
    /// present in *either* `self` *or* `other`, including any which are
    /// present in both.
    ///
    /// This is equivalent to using the `|` operator (e.g.
    /// [`ops::BitOr`]), as in `flags | other`.
    ///
    /// [`ops::BitOr`]: https://doc.rust-lang.org/std/ops/trait.BitOr.html
    #[inline]
    #[must_use]
    pub const fn union(self, other: Self) -> Self {
        Self {
            bits: self.bits | other.bits,
        }
    }

    /// Returns the difference between the flags in `self` and `other`.
    ///
    /// Specifically, the returned set contains all flags present in
    /// `self`, except for the ones present in `other`.
    ///
    /// It is also conceptually equivalent to the "bit-clear" operation:
    /// `flags & !other` (and this syntax is also supported).
    ///
    /// This is equivalent to using the `-` operator (e.g.
    /// [`ops::Sub`]), as in `flags - other`.
    ///
    /// [`ops::Sub`]: https://doc.rust-lang.org/std/ops/trait.Sub.html
    #[inline]
    #[must_use]
    pub const fn difference(self, other: Self) -> Self {
        Self {
            bits: self.bits & !other.bits,
        }
    }
}

impl std::ops::BitOr for EntryFormatFlags {
    type Output = Self;

    /// Returns the union of the two sets of flags.
    #[inline]
    fn bitor(self, other: EntryFormatFlags) -> Self {
        Self {
            bits: self.bits | other.bits,
        }
    }
}

impl std::ops::BitOrAssign for EntryFormatFlags {
    /// Adds the set of flags.
    #[inline]
    fn bitor_assign(&mut self, other: Self) {
        self.bits |= other.bits;
    }
}

impl std::ops::BitXor for EntryFormatFlags {
    type Output = Self;

    /// Returns the left flags, but with all the right flags toggled.
    #[inline]
    fn bitxor(self, other: Self) -> Self {
        Self {
            bits: self.bits ^ other.bits,
        }
    }
}

impl std::ops::BitXorAssign for EntryFormatFlags {
    /// Toggles the set of flags.
    #[inline]
    fn bitxor_assign(&mut self, other: Self) {
        self.bits ^= other.bits;
    }
}

impl std::ops::BitAnd for EntryFormatFlags {
    type Output = Self;

    /// Returns the intersection between the two sets of flags.
    #[inline]
    fn bitand(self, other: Self) -> Self {
        Self {
            bits: self.bits & other.bits,
        }
    }
}

impl std::ops::BitAndAssign for EntryFormatFlags {
    /// Disables all flags disabled in the set.
    #[inline]
    fn bitand_assign(&mut self, other: Self) {
        self.bits &= other.bits;
    }
}

impl std::ops::Sub for EntryFormatFlags {
    type Output = Self;

    /// Returns the set difference of the two sets of flags.
    #[inline]
    fn sub(self, other: Self) -> Self {
        Self {
            bits: self.bits & !other.bits,
        }
    }
}

impl std::ops::SubAssign for EntryFormatFlags {
    /// Disables all flags enabled in the set.
    #[inline]
    fn sub_assign(&mut self, other: Self) {
        self.bits &= !other.bits;
    }
}

impl std::ops::Not for EntryFormatFlags {
    type Output = Self;

    /// Returns the complement of this set of flags.
    #[inline]
    fn not(self) -> Self {
        Self { bits: !self.bits } & Self::all()
    }
}

impl std::fmt::Debug for EntryFormatFlags {
    fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
        let members: &[(&str, Self)] = &[
            ("FEATURES_AND_DESIGN_SPACE", Self::FEATURES_AND_DESIGN_SPACE),
            ("CHILD_INDICES", Self::CHILD_INDICES),
            ("ENTRY_ID_DELTA", Self::ENTRY_ID_DELTA),
            ("PATCH_FORMAT", Self::PATCH_FORMAT),
            ("CODEPOINTS_BIT_1", Self::CODEPOINTS_BIT_1),
            ("CODEPOINTS_BIT_2", Self::CODEPOINTS_BIT_2),
            ("IGNORED", Self::IGNORED),
            ("RESERVED", Self::RESERVED),
        ];
        let mut first = true;
        for (name, value) in members {
            if self.contains(*value) {
                if !first {
                    f.write_str(" | ")?;
                }
                first = false;
                f.write_str(name)?;
            }
        }
        if first {
            f.write_str("(empty)")?;
        }
        Ok(())
    }
}

impl std::fmt::Binary for EntryFormatFlags {
    fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
        std::fmt::Binary::fmt(&self.bits, f)
    }
}

impl std::fmt::Octal for EntryFormatFlags {
    fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
        std::fmt::Octal::fmt(&self.bits, f)
    }
}

impl std::fmt::LowerHex for EntryFormatFlags {
    fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
        std::fmt::LowerHex::fmt(&self.bits, f)
    }
}

impl std::fmt::UpperHex for EntryFormatFlags {
    fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
        std::fmt::UpperHex::fmt(&self.bits, f)
    }
}

impl font_types::Scalar for EntryFormatFlags {
    type Raw = <u8 as font_types::Scalar>::Raw;
    fn to_raw(self) -> Self::Raw {
        self.bits().to_raw()
    }
    fn from_raw(raw: Self::Raw) -> Self {
        let t = <u8>::from_raw(raw);
        Self::from_bits_truncate(t)
    }
}

#[cfg(feature = "experimental_traverse")]
impl<'a> From<EntryFormatFlags> for FieldType<'a> {
    fn from(src: EntryFormatFlags) -> FieldType<'a> {
        src.bits().into()
    }
}

#[derive(Clone, Debug, PartialEq, Eq, PartialOrd, Ord, Hash, Copy, bytemuck :: AnyBitPattern)]
#[repr(C)]
#[repr(packed)]
pub struct DesignSpaceSegment {
    pub axis_tag: BigEndian<Tag>,
    pub start: BigEndian<Fixed>,
    pub end: BigEndian<Fixed>,
}

impl DesignSpaceSegment {
    pub fn axis_tag(&self) -> Tag {
        self.axis_tag.get()
    }

    pub fn start(&self) -> Fixed {
        self.start.get()
    }

    pub fn end(&self) -> Fixed {
        self.end.get()
    }
}

impl FixedSize for DesignSpaceSegment {
    const RAW_BYTE_LEN: usize = Tag::RAW_BYTE_LEN + Fixed::RAW_BYTE_LEN + Fixed::RAW_BYTE_LEN;
}

#[cfg(feature = "experimental_traverse")]
impl<'a> SomeRecord<'a> for DesignSpaceSegment {
    fn traverse(self, data: FontData<'a>) -> RecordResolver<'a> {
        RecordResolver {
            name: "DesignSpaceSegment",
            get_field: Box::new(move |idx, _data| match idx {
                0usize => Some(Field::new("axis_tag", self.axis_tag())),
                1usize => Some(Field::new("start", self.start())),
                2usize => Some(Field::new("end", self.end())),
                _ => None,
            }),
            data,
        }
    }
}

impl<'a> MinByteRange<'a> for IdStringData<'a> {
    fn min_byte_range(&self) -> Range<usize> {
        0..self.id_data_byte_range().end
    }
    fn min_table_bytes(&self) -> &'a [u8] {
        let range = self.min_byte_range();
        self.data.as_bytes().get(range).unwrap_or_default()
    }
}

impl ReadArgs for IdStringData<'_> {
    type Args = ();
}

impl<'a> FontRead<'a> for IdStringData<'a> {
    fn read_with_args(data: FontData<'a>, _: ()) -> Result<Self, ReadError> {
        #[allow(clippy::absurd_extreme_comparisons)]
        if data.len() < Self::MIN_SIZE {
            return Err(ReadError::OutOfBounds);
        }
        Ok(Self { data })
    }
}

#[derive(Clone)]
pub struct IdStringData<'a> {
    data: FontData<'a>,
}

#[allow(clippy::needless_lifetimes)]
impl<'a> IdStringData<'a> {
    pub const MIN_SIZE: usize = 0;
    basic_table_impls!(impl_the_methods);

    pub fn id_data(&self) -> &'a [u8] {
        let range = self.id_data_byte_range();
        self.data.read_array(range).ok().unwrap_or_default()
    }

    pub fn id_data_byte_range(&self) -> Range<usize> {
        let start = 0;
        let end =
            start + self.data.len().saturating_sub(start) / u8::RAW_BYTE_LEN * u8::RAW_BYTE_LEN;
        start..end
    }
}

#[allow(clippy::absurd_extreme_comparisons)]
const _: () = assert!(FontData::default_data_long_enough(IdStringData::MIN_SIZE));

impl Default for IdStringData<'_> {
    fn default() -> Self {
        Self {
            data: FontData::default_table_data(),
        }
    }
}

#[cfg(feature = "experimental_traverse")]
impl<'a> SomeTable<'a> for IdStringData<'a> {
    fn type_name(&self) -> &str {
        "IdStringData"
    }
    fn get_field(&self, idx: usize) -> Option<Field<'a>> {
        match idx {
            0usize => Some(Field::new("id_data", self.id_data())),
            _ => None,
        }
    }
}

#[cfg(feature = "experimental_traverse")]
#[allow(clippy::needless_lifetimes)]
impl<'a> std::fmt::Debug for IdStringData<'a> {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        (self as &dyn SomeTable<'a>).fmt(f)
    }
}

impl<'a> MinByteRange<'a> for TableKeyedPatch<'a> {
    fn min_byte_range(&self) -> Range<usize> {
        0..self.patch_offsets_byte_range().end
    }
    fn min_table_bytes(&self) -> &'a [u8] {
        let range = self.min_byte_range();
        self.data.as_bytes().get(range).unwrap_or_default()
    }
}

impl ReadArgs for TableKeyedPatch<'_> {
    type Args = ();
}

impl<'a> FontRead<'a> for TableKeyedPatch<'a> {
    fn read_with_args(data: FontData<'a>, _: ()) -> Result<Self, ReadError> {
        #[allow(clippy::absurd_extreme_comparisons)]
        if data.len() < Self::MIN_SIZE {
            return Err(ReadError::OutOfBounds);
        }
        Ok(Self { data })
    }
}

/// [Table Keyed Patch](https://w3c.github.io/IFT/Overview.html#table-keyed)
#[derive(Clone)]
pub struct TableKeyedPatch<'a> {
    data: FontData<'a>,
}

#[allow(clippy::needless_lifetimes)]
impl<'a> TableKeyedPatch<'a> {
    pub const MIN_SIZE: usize =
        (Tag::RAW_BYTE_LEN + u32::RAW_BYTE_LEN + CompatibilityId::RAW_BYTE_LEN + u16::RAW_BYTE_LEN);
    basic_table_impls!(impl_the_methods);

    pub fn format(&self) -> Tag {
        let range = self.format_byte_range();
        self.data.read_at(range.start).ok().unwrap()
    }

    /// Unique ID that identifies compatible patches.
    pub fn compatibility_id(&self) -> CompatibilityId {
        let range = self.compatibility_id_byte_range();
        self.data.read_at(range.start).ok().unwrap()
    }

    pub fn patches_count(&self) -> u16 {
        let range = self.patches_count_byte_range();
        self.data.read_at(range.start).ok().unwrap()
    }

    pub fn patch_offsets(&self) -> &'a [BigEndian<Offset32>] {
        let range = self.patch_offsets_byte_range();
        self.data.read_array(range).ok().unwrap_or_default()
    }

    /// A dynamically resolving wrapper for [`patch_offsets`][Self::patch_offsets].
    pub fn patches(&self) -> ArrayOfOffsets<'a, TablePatch<'a>, Offset32> {
        let data = self.data;
        let offsets = self.patch_offsets();
        ArrayOfOffsets::new(offsets, data, ())
    }

    pub fn format_byte_range(&self) -> Range<usize> {
        let start = 0;
        let end = start + Tag::RAW_BYTE_LEN;
        start..end
    }

    pub fn _reserved_byte_range(&self) -> Range<usize> {
        let start = self.format_byte_range().end;
        let end = start + u32::RAW_BYTE_LEN;
        start..end
    }

    pub fn compatibility_id_byte_range(&self) -> Range<usize> {
        let start = self._reserved_byte_range().end;
        let end = start + CompatibilityId::RAW_BYTE_LEN;
        start..end
    }

    pub fn patches_count_byte_range(&self) -> Range<usize> {
        let start = self.compatibility_id_byte_range().end;
        let end = start + u16::RAW_BYTE_LEN;
        start..end
    }

    pub fn patch_offsets_byte_range(&self) -> Range<usize> {
        let patches_count = self.patches_count();
        let start = self.patches_count_byte_range().end;
        let end = start
            + (transforms::add(patches_count, 1_usize)).saturating_mul(Offset32::RAW_BYTE_LEN);
        start..end
    }
}

const _: () = assert!(FontData::default_data_long_enough(
    TableKeyedPatch::MIN_SIZE
));

impl Default for TableKeyedPatch<'_> {
    fn default() -> Self {
        Self {
            data: FontData::default_table_data(),
        }
    }
}

#[cfg(feature = "experimental_traverse")]
impl<'a> SomeTable<'a> for TableKeyedPatch<'a> {
    fn type_name(&self) -> &str {
        "TableKeyedPatch"
    }
    fn get_field(&self, idx: usize) -> Option<Field<'a>> {
        match idx {
            0usize => Some(Field::new("format", self.format())),
            1usize => Some(Field::new(
                "compatibility_id",
                traversal::FieldType::Unknown,
            )),
            2usize => Some(Field::new("patches_count", self.patches_count())),
            3usize => Some(Field::new("patch_offsets", FieldType::from(self.patches()))),
            _ => None,
        }
    }
}

#[cfg(feature = "experimental_traverse")]
#[allow(clippy::needless_lifetimes)]
impl<'a> std::fmt::Debug for TableKeyedPatch<'a> {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        (self as &dyn SomeTable<'a>).fmt(f)
    }
}

impl<'a> MinByteRange<'a> for TablePatch<'a> {
    fn min_byte_range(&self) -> Range<usize> {
        0..self.brotli_stream_byte_range().end
    }
    fn min_table_bytes(&self) -> &'a [u8] {
        let range = self.min_byte_range();
        self.data.as_bytes().get(range).unwrap_or_default()
    }
}

impl ReadArgs for TablePatch<'_> {
    type Args = ();
}

impl<'a> FontRead<'a> for TablePatch<'a> {
    fn read_with_args(data: FontData<'a>, _: ()) -> Result<Self, ReadError> {
        #[allow(clippy::absurd_extreme_comparisons)]
        if data.len() < Self::MIN_SIZE {
            return Err(ReadError::OutOfBounds);
        }
        Ok(Self { data })
    }
}

/// [TablePatch](https://w3c.github.io/IFT/Overview.html#tablepatch)
#[derive(Clone)]
pub struct TablePatch<'a> {
    data: FontData<'a>,
}

#[allow(clippy::needless_lifetimes)]
impl<'a> TablePatch<'a> {
    pub const MIN_SIZE: usize =
        (Tag::RAW_BYTE_LEN + TablePatchFlags::RAW_BYTE_LEN + u32::RAW_BYTE_LEN);
    basic_table_impls!(impl_the_methods);

    pub fn tag(&self) -> Tag {
        let range = self.tag_byte_range();
        self.data.read_at(range.start).ok().unwrap()
    }

    pub fn flags(&self) -> TablePatchFlags {
        let range = self.flags_byte_range();
        self.data.read_at(range.start).ok().unwrap()
    }

    pub fn max_uncompressed_length(&self) -> u32 {
        let range = self.max_uncompressed_length_byte_range();
        self.data.read_at(range.start).ok().unwrap()
    }

    pub fn brotli_stream(&self) -> &'a [u8] {
        let range = self.brotli_stream_byte_range();
        self.data.read_array(range).ok().unwrap_or_default()
    }

    pub fn tag_byte_range(&self) -> Range<usize> {
        let start = 0;
        let end = start + Tag::RAW_BYTE_LEN;
        start..end
    }

    pub fn flags_byte_range(&self) -> Range<usize> {
        let start = self.tag_byte_range().end;
        let end = start + TablePatchFlags::RAW_BYTE_LEN;
        start..end
    }

    pub fn max_uncompressed_length_byte_range(&self) -> Range<usize> {
        let start = self.flags_byte_range().end;
        let end = start + u32::RAW_BYTE_LEN;
        start..end
    }

    pub fn brotli_stream_byte_range(&self) -> Range<usize> {
        let start = self.max_uncompressed_length_byte_range().end;
        let end =
            start + self.data.len().saturating_sub(start) / u8::RAW_BYTE_LEN * u8::RAW_BYTE_LEN;
        start..end
    }
}

const _: () = assert!(FontData::default_data_long_enough(TablePatch::MIN_SIZE));

impl Default for TablePatch<'_> {
    fn default() -> Self {
        Self {
            data: FontData::default_table_data(),
        }
    }
}

#[cfg(feature = "experimental_traverse")]
impl<'a> SomeTable<'a> for TablePatch<'a> {
    fn type_name(&self) -> &str {
        "TablePatch"
    }
    fn get_field(&self, idx: usize) -> Option<Field<'a>> {
        match idx {
            0usize => Some(Field::new("tag", self.tag())),
            1usize => Some(Field::new("flags", self.flags())),
            2usize => Some(Field::new(
                "max_uncompressed_length",
                self.max_uncompressed_length(),
            )),
            3usize => Some(Field::new("brotli_stream", self.brotli_stream())),
            _ => None,
        }
    }
}

#[cfg(feature = "experimental_traverse")]
#[allow(clippy::needless_lifetimes)]
impl<'a> std::fmt::Debug for TablePatch<'a> {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        (self as &dyn SomeTable<'a>).fmt(f)
    }
}

#[derive(Clone, Copy, Default, PartialEq, Eq, PartialOrd, Ord, Hash, bytemuck :: AnyBitPattern)]
#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
#[repr(transparent)]
pub struct TablePatchFlags {
    bits: u8,
}

impl TablePatchFlags {
    pub const REPLACE_TABLE: Self = Self { bits: 0b01 };

    pub const DROP_TABLE: Self = Self { bits: 0b10 };
}

impl TablePatchFlags {
    ///  Returns an empty set of flags.
    #[inline]
    pub const fn empty() -> Self {
        Self { bits: 0 }
    }

    /// Returns the set containing all flags.
    #[inline]
    pub const fn all() -> Self {
        Self {
            bits: Self::REPLACE_TABLE.bits | Self::DROP_TABLE.bits,
        }
    }

    /// Returns the raw value of the flags currently stored.
    #[inline]
    pub const fn bits(&self) -> u8 {
        self.bits
    }

    /// Convert from underlying bit representation, unless that
    /// representation contains bits that do not correspond to a flag.
    #[inline]
    pub const fn from_bits(bits: u8) -> Option<Self> {
        if (bits & !Self::all().bits()) == 0 {
            Some(Self { bits })
        } else {
            None
        }
    }

    /// Convert from underlying bit representation, dropping any bits
    /// that do not correspond to flags.
    #[inline]
    pub const fn from_bits_truncate(bits: u8) -> Self {
        Self {
            bits: bits & Self::all().bits,
        }
    }

    /// Returns `true` if no flags are currently stored.
    #[inline]
    pub const fn is_empty(&self) -> bool {
        self.bits() == Self::empty().bits()
    }

    /// Returns `true` if there are flags common to both `self` and `other`.
    #[inline]
    pub const fn intersects(&self, other: Self) -> bool {
        !(Self {
            bits: self.bits & other.bits,
        })
        .is_empty()
    }

    /// Returns `true` if all of the flags in `other` are contained within `self`.
    #[inline]
    pub const fn contains(&self, other: Self) -> bool {
        (self.bits & other.bits) == other.bits
    }

    /// Inserts the specified flags in-place.
    #[inline]
    pub fn insert(&mut self, other: Self) {
        self.bits |= other.bits;
    }

    /// Removes the specified flags in-place.
    #[inline]
    pub fn remove(&mut self, other: Self) {
        self.bits &= !other.bits;
    }

    /// Toggles the specified flags in-place.
    #[inline]
    pub fn toggle(&mut self, other: Self) {
        self.bits ^= other.bits;
    }

    /// Returns the intersection between the flags in `self` and
    /// `other`.
    ///
    /// Specifically, the returned set contains only the flags which are
    /// present in *both* `self` *and* `other`.
    ///
    /// This is equivalent to using the `&` operator (e.g.
    /// [`ops::BitAnd`]), as in `flags & other`.
    ///
    /// [`ops::BitAnd`]: https://doc.rust-lang.org/std/ops/trait.BitAnd.html
    #[inline]
    #[must_use]
    pub const fn intersection(self, other: Self) -> Self {
        Self {
            bits: self.bits & other.bits,
        }
    }

    /// Returns the union of between the flags in `self` and `other`.
    ///
    /// Specifically, the returned set contains all flags which are
    /// present in *either* `self` *or* `other`, including any which are
    /// present in both.
    ///
    /// This is equivalent to using the `|` operator (e.g.
    /// [`ops::BitOr`]), as in `flags | other`.
    ///
    /// [`ops::BitOr`]: https://doc.rust-lang.org/std/ops/trait.BitOr.html
    #[inline]
    #[must_use]
    pub const fn union(self, other: Self) -> Self {
        Self {
            bits: self.bits | other.bits,
        }
    }

    /// Returns the difference between the flags in `self` and `other`.
    ///
    /// Specifically, the returned set contains all flags present in
    /// `self`, except for the ones present in `other`.
    ///
    /// It is also conceptually equivalent to the "bit-clear" operation:
    /// `flags & !other` (and this syntax is also supported).
    ///
    /// This is equivalent to using the `-` operator (e.g.
    /// [`ops::Sub`]), as in `flags - other`.
    ///
    /// [`ops::Sub`]: https://doc.rust-lang.org/std/ops/trait.Sub.html
    #[inline]
    #[must_use]
    pub const fn difference(self, other: Self) -> Self {
        Self {
            bits: self.bits & !other.bits,
        }
    }
}

impl std::ops::BitOr for TablePatchFlags {
    type Output = Self;

    /// Returns the union of the two sets of flags.
    #[inline]
    fn bitor(self, other: TablePatchFlags) -> Self {
        Self {
            bits: self.bits | other.bits,
        }
    }
}

impl std::ops::BitOrAssign for TablePatchFlags {
    /// Adds the set of flags.
    #[inline]
    fn bitor_assign(&mut self, other: Self) {
        self.bits |= other.bits;
    }
}

impl std::ops::BitXor for TablePatchFlags {
    type Output = Self;

    /// Returns the left flags, but with all the right flags toggled.
    #[inline]
    fn bitxor(self, other: Self) -> Self {
        Self {
            bits: self.bits ^ other.bits,
        }
    }
}

impl std::ops::BitXorAssign for TablePatchFlags {
    /// Toggles the set of flags.
    #[inline]
    fn bitxor_assign(&mut self, other: Self) {
        self.bits ^= other.bits;
    }
}

impl std::ops::BitAnd for TablePatchFlags {
    type Output = Self;

    /// Returns the intersection between the two sets of flags.
    #[inline]
    fn bitand(self, other: Self) -> Self {
        Self {
            bits: self.bits & other.bits,
        }
    }
}

impl std::ops::BitAndAssign for TablePatchFlags {
    /// Disables all flags disabled in the set.
    #[inline]
    fn bitand_assign(&mut self, other: Self) {
        self.bits &= other.bits;
    }
}

impl std::ops::Sub for TablePatchFlags {
    type Output = Self;

    /// Returns the set difference of the two sets of flags.
    #[inline]
    fn sub(self, other: Self) -> Self {
        Self {
            bits: self.bits & !other.bits,
        }
    }
}

impl std::ops::SubAssign for TablePatchFlags {
    /// Disables all flags enabled in the set.
    #[inline]
    fn sub_assign(&mut self, other: Self) {
        self.bits &= !other.bits;
    }
}

impl std::ops::Not for TablePatchFlags {
    type Output = Self;

    /// Returns the complement of this set of flags.
    #[inline]
    fn not(self) -> Self {
        Self { bits: !self.bits } & Self::all()
    }
}

impl std::fmt::Debug for TablePatchFlags {
    fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
        let members: &[(&str, Self)] = &[
            ("REPLACE_TABLE", Self::REPLACE_TABLE),
            ("DROP_TABLE", Self::DROP_TABLE),
        ];
        let mut first = true;
        for (name, value) in members {
            if self.contains(*value) {
                if !first {
                    f.write_str(" | ")?;
                }
                first = false;
                f.write_str(name)?;
            }
        }
        if first {
            f.write_str("(empty)")?;
        }
        Ok(())
    }
}

impl std::fmt::Binary for TablePatchFlags {
    fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
        std::fmt::Binary::fmt(&self.bits, f)
    }
}

impl std::fmt::Octal for TablePatchFlags {
    fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
        std::fmt::Octal::fmt(&self.bits, f)
    }
}

impl std::fmt::LowerHex for TablePatchFlags {
    fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
        std::fmt::LowerHex::fmt(&self.bits, f)
    }
}

impl std::fmt::UpperHex for TablePatchFlags {
    fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
        std::fmt::UpperHex::fmt(&self.bits, f)
    }
}

impl font_types::Scalar for TablePatchFlags {
    type Raw = <u8 as font_types::Scalar>::Raw;
    fn to_raw(self) -> Self::Raw {
        self.bits().to_raw()
    }
    fn from_raw(raw: Self::Raw) -> Self {
        let t = <u8>::from_raw(raw);
        Self::from_bits_truncate(t)
    }
}

#[cfg(feature = "experimental_traverse")]
impl<'a> From<TablePatchFlags> for FieldType<'a> {
    fn from(src: TablePatchFlags) -> FieldType<'a> {
        src.bits().into()
    }
}

impl<'a> MinByteRange<'a> for GlyphKeyedPatch<'a> {
    fn min_byte_range(&self) -> Range<usize> {
        0..self.brotli_stream_byte_range().end
    }
    fn min_table_bytes(&self) -> &'a [u8] {
        let range = self.min_byte_range();
        self.data.as_bytes().get(range).unwrap_or_default()
    }
}

impl ReadArgs for GlyphKeyedPatch<'_> {
    type Args = ();
}

impl<'a> FontRead<'a> for GlyphKeyedPatch<'a> {
    fn read_with_args(data: FontData<'a>, _: ()) -> Result<Self, ReadError> {
        #[allow(clippy::absurd_extreme_comparisons)]
        if data.len() < Self::MIN_SIZE {
            return Err(ReadError::OutOfBounds);
        }
        Ok(Self { data })
    }
}

/// [Glyph Keyed Patch](https://w3c.github.io/IFT/Overview.html#glyph-keyed)
#[derive(Clone)]
pub struct GlyphKeyedPatch<'a> {
    data: FontData<'a>,
}

#[allow(clippy::needless_lifetimes)]
impl<'a> GlyphKeyedPatch<'a> {
    pub const MIN_SIZE: usize = (Tag::RAW_BYTE_LEN
        + u32::RAW_BYTE_LEN
        + GlyphKeyedFlags::RAW_BYTE_LEN
        + CompatibilityId::RAW_BYTE_LEN
        + u32::RAW_BYTE_LEN);
    basic_table_impls!(impl_the_methods);

    pub fn format(&self) -> Tag {
        let range = self.format_byte_range();
        self.data.read_at(range.start).ok().unwrap()
    }

    pub fn flags(&self) -> GlyphKeyedFlags {
        let range = self.flags_byte_range();
        self.data.read_at(range.start).ok().unwrap()
    }

    pub fn compatibility_id(&self) -> CompatibilityId {
        let range = self.compatibility_id_byte_range();
        self.data.read_at(range.start).ok().unwrap()
    }

    pub fn max_uncompressed_length(&self) -> u32 {
        let range = self.max_uncompressed_length_byte_range();
        self.data.read_at(range.start).ok().unwrap()
    }

    pub fn brotli_stream(&self) -> &'a [u8] {
        let range = self.brotli_stream_byte_range();
        self.data.read_array(range).ok().unwrap_or_default()
    }

    pub fn format_byte_range(&self) -> Range<usize> {
        let start = 0;
        let end = start + Tag::RAW_BYTE_LEN;
        start..end
    }

    pub fn _reserved_byte_range(&self) -> Range<usize> {
        let start = self.format_byte_range().end;
        let end = start + u32::RAW_BYTE_LEN;
        start..end
    }

    pub fn flags_byte_range(&self) -> Range<usize> {
        let start = self._reserved_byte_range().end;
        let end = start + GlyphKeyedFlags::RAW_BYTE_LEN;
        start..end
    }

    pub fn compatibility_id_byte_range(&self) -> Range<usize> {
        let start = self.flags_byte_range().end;
        let end = start + CompatibilityId::RAW_BYTE_LEN;
        start..end
    }

    pub fn max_uncompressed_length_byte_range(&self) -> Range<usize> {
        let start = self.compatibility_id_byte_range().end;
        let end = start + u32::RAW_BYTE_LEN;
        start..end
    }

    pub fn brotli_stream_byte_range(&self) -> Range<usize> {
        let start = self.max_uncompressed_length_byte_range().end;
        let end =
            start + self.data.len().saturating_sub(start) / u8::RAW_BYTE_LEN * u8::RAW_BYTE_LEN;
        start..end
    }
}

const _: () = assert!(FontData::default_data_long_enough(
    GlyphKeyedPatch::MIN_SIZE
));

impl Default for GlyphKeyedPatch<'_> {
    fn default() -> Self {
        Self {
            data: FontData::default_table_data(),
        }
    }
}

#[cfg(feature = "experimental_traverse")]
impl<'a> SomeTable<'a> for GlyphKeyedPatch<'a> {
    fn type_name(&self) -> &str {
        "GlyphKeyedPatch"
    }
    fn get_field(&self, idx: usize) -> Option<Field<'a>> {
        match idx {
            0usize => Some(Field::new("format", self.format())),
            1usize => Some(Field::new("flags", self.flags())),
            2usize => Some(Field::new(
                "compatibility_id",
                traversal::FieldType::Unknown,
            )),
            3usize => Some(Field::new(
                "max_uncompressed_length",
                self.max_uncompressed_length(),
            )),
            4usize => Some(Field::new("brotli_stream", self.brotli_stream())),
            _ => None,
        }
    }
}

#[cfg(feature = "experimental_traverse")]
#[allow(clippy::needless_lifetimes)]
impl<'a> std::fmt::Debug for GlyphKeyedPatch<'a> {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        (self as &dyn SomeTable<'a>).fmt(f)
    }
}

#[derive(Clone, Copy, Default, PartialEq, Eq, PartialOrd, Ord, Hash, bytemuck :: AnyBitPattern)]
#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
#[repr(transparent)]
pub struct GlyphKeyedFlags {
    bits: u8,
}

impl GlyphKeyedFlags {
    pub const NONE: Self = Self { bits: 0b0 };

    pub const WIDE_GLYPH_IDS: Self = Self { bits: 0b1 };
}

impl GlyphKeyedFlags {
    ///  Returns an empty set of flags.
    #[inline]
    pub const fn empty() -> Self {
        Self { bits: 0 }
    }

    /// Returns the set containing all flags.
    #[inline]
    pub const fn all() -> Self {
        Self {
            bits: Self::NONE.bits | Self::WIDE_GLYPH_IDS.bits,
        }
    }

    /// Returns the raw value of the flags currently stored.
    #[inline]
    pub const fn bits(&self) -> u8 {
        self.bits
    }

    /// Convert from underlying bit representation, unless that
    /// representation contains bits that do not correspond to a flag.
    #[inline]
    pub const fn from_bits(bits: u8) -> Option<Self> {
        if (bits & !Self::all().bits()) == 0 {
            Some(Self { bits })
        } else {
            None
        }
    }

    /// Convert from underlying bit representation, dropping any bits
    /// that do not correspond to flags.
    #[inline]
    pub const fn from_bits_truncate(bits: u8) -> Self {
        Self {
            bits: bits & Self::all().bits,
        }
    }

    /// Returns `true` if no flags are currently stored.
    #[inline]
    pub const fn is_empty(&self) -> bool {
        self.bits() == Self::empty().bits()
    }

    /// Returns `true` if there are flags common to both `self` and `other`.
    #[inline]
    pub const fn intersects(&self, other: Self) -> bool {
        !(Self {
            bits: self.bits & other.bits,
        })
        .is_empty()
    }

    /// Returns `true` if all of the flags in `other` are contained within `self`.
    #[inline]
    pub const fn contains(&self, other: Self) -> bool {
        (self.bits & other.bits) == other.bits
    }

    /// Inserts the specified flags in-place.
    #[inline]
    pub fn insert(&mut self, other: Self) {
        self.bits |= other.bits;
    }

    /// Removes the specified flags in-place.
    #[inline]
    pub fn remove(&mut self, other: Self) {
        self.bits &= !other.bits;
    }

    /// Toggles the specified flags in-place.
    #[inline]
    pub fn toggle(&mut self, other: Self) {
        self.bits ^= other.bits;
    }

    /// Returns the intersection between the flags in `self` and
    /// `other`.
    ///
    /// Specifically, the returned set contains only the flags which are
    /// present in *both* `self` *and* `other`.
    ///
    /// This is equivalent to using the `&` operator (e.g.
    /// [`ops::BitAnd`]), as in `flags & other`.
    ///
    /// [`ops::BitAnd`]: https://doc.rust-lang.org/std/ops/trait.BitAnd.html
    #[inline]
    #[must_use]
    pub const fn intersection(self, other: Self) -> Self {
        Self {
            bits: self.bits & other.bits,
        }
    }

    /// Returns the union of between the flags in `self` and `other`.
    ///
    /// Specifically, the returned set contains all flags which are
    /// present in *either* `self` *or* `other`, including any which are
    /// present in both.
    ///
    /// This is equivalent to using the `|` operator (e.g.
    /// [`ops::BitOr`]), as in `flags | other`.
    ///
    /// [`ops::BitOr`]: https://doc.rust-lang.org/std/ops/trait.BitOr.html
    #[inline]
    #[must_use]
    pub const fn union(self, other: Self) -> Self {
        Self {
            bits: self.bits | other.bits,
        }
    }

    /// Returns the difference between the flags in `self` and `other`.
    ///
    /// Specifically, the returned set contains all flags present in
    /// `self`, except for the ones present in `other`.
    ///
    /// It is also conceptually equivalent to the "bit-clear" operation:
    /// `flags & !other` (and this syntax is also supported).
    ///
    /// This is equivalent to using the `-` operator (e.g.
    /// [`ops::Sub`]), as in `flags - other`.
    ///
    /// [`ops::Sub`]: https://doc.rust-lang.org/std/ops/trait.Sub.html
    #[inline]
    #[must_use]
    pub const fn difference(self, other: Self) -> Self {
        Self {
            bits: self.bits & !other.bits,
        }
    }
}

impl std::ops::BitOr for GlyphKeyedFlags {
    type Output = Self;

    /// Returns the union of the two sets of flags.
    #[inline]
    fn bitor(self, other: GlyphKeyedFlags) -> Self {
        Self {
            bits: self.bits | other.bits,
        }
    }
}

impl std::ops::BitOrAssign for GlyphKeyedFlags {
    /// Adds the set of flags.
    #[inline]
    fn bitor_assign(&mut self, other: Self) {
        self.bits |= other.bits;
    }
}

impl std::ops::BitXor for GlyphKeyedFlags {
    type Output = Self;

    /// Returns the left flags, but with all the right flags toggled.
    #[inline]
    fn bitxor(self, other: Self) -> Self {
        Self {
            bits: self.bits ^ other.bits,
        }
    }
}

impl std::ops::BitXorAssign for GlyphKeyedFlags {
    /// Toggles the set of flags.
    #[inline]
    fn bitxor_assign(&mut self, other: Self) {
        self.bits ^= other.bits;
    }
}

impl std::ops::BitAnd for GlyphKeyedFlags {
    type Output = Self;

    /// Returns the intersection between the two sets of flags.
    #[inline]
    fn bitand(self, other: Self) -> Self {
        Self {
            bits: self.bits & other.bits,
        }
    }
}

impl std::ops::BitAndAssign for GlyphKeyedFlags {
    /// Disables all flags disabled in the set.
    #[inline]
    fn bitand_assign(&mut self, other: Self) {
        self.bits &= other.bits;
    }
}

impl std::ops::Sub for GlyphKeyedFlags {
    type Output = Self;

    /// Returns the set difference of the two sets of flags.
    #[inline]
    fn sub(self, other: Self) -> Self {
        Self {
            bits: self.bits & !other.bits,
        }
    }
}

impl std::ops::SubAssign for GlyphKeyedFlags {
    /// Disables all flags enabled in the set.
    #[inline]
    fn sub_assign(&mut self, other: Self) {
        self.bits &= !other.bits;
    }
}

impl std::ops::Not for GlyphKeyedFlags {
    type Output = Self;

    /// Returns the complement of this set of flags.
    #[inline]
    fn not(self) -> Self {
        Self { bits: !self.bits } & Self::all()
    }
}

impl std::fmt::Debug for GlyphKeyedFlags {
    fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
        let members: &[(&str, Self)] = &[
            ("NONE", Self::NONE),
            ("WIDE_GLYPH_IDS", Self::WIDE_GLYPH_IDS),
        ];
        let mut first = true;
        for (name, value) in members {
            if self.contains(*value) {
                if !first {
                    f.write_str(" | ")?;
                }
                first = false;
                f.write_str(name)?;
            }
        }
        if first {
            f.write_str("(empty)")?;
        }
        Ok(())
    }
}

impl std::fmt::Binary for GlyphKeyedFlags {
    fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
        std::fmt::Binary::fmt(&self.bits, f)
    }
}

impl std::fmt::Octal for GlyphKeyedFlags {
    fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
        std::fmt::Octal::fmt(&self.bits, f)
    }
}

impl std::fmt::LowerHex for GlyphKeyedFlags {
    fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
        std::fmt::LowerHex::fmt(&self.bits, f)
    }
}

impl std::fmt::UpperHex for GlyphKeyedFlags {
    fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
        std::fmt::UpperHex::fmt(&self.bits, f)
    }
}

impl font_types::Scalar for GlyphKeyedFlags {
    type Raw = <u8 as font_types::Scalar>::Raw;
    fn to_raw(self) -> Self::Raw {
        self.bits().to_raw()
    }
    fn from_raw(raw: Self::Raw) -> Self {
        let t = <u8>::from_raw(raw);
        Self::from_bits_truncate(t)
    }
}

#[cfg(feature = "experimental_traverse")]
impl<'a> From<GlyphKeyedFlags> for FieldType<'a> {
    fn from(src: GlyphKeyedFlags) -> FieldType<'a> {
        src.bits().into()
    }
}

impl<'a> MinByteRange<'a> for GlyphPatches<'a> {
    fn min_byte_range(&self) -> Range<usize> {
        0..self.glyph_data_offsets_byte_range().end
    }
    fn min_table_bytes(&self) -> &'a [u8] {
        let range = self.min_byte_range();
        self.data.as_bytes().get(range).unwrap_or_default()
    }
}

impl ReadArgs for GlyphPatches<'_> {
    type Args = GlyphKeyedFlags;
}

impl<'a> FontRead<'a> for GlyphPatches<'a> {
    fn read_with_args(data: FontData<'a>, args: GlyphKeyedFlags) -> Result<Self, ReadError> {
        let flags = args;

        #[allow(clippy::absurd_extreme_comparisons)]
        if data.len() < Self::MIN_SIZE {
            return Err(ReadError::OutOfBounds);
        }
        Ok(Self { data, flags })
    }
}

impl<'a> GlyphPatches<'a> {
    /// A constructor that requires additional arguments.
    ///
    /// This type requires some external state in order to be
    /// parsed.
    pub fn read(data: FontData<'a>, flags: GlyphKeyedFlags) -> Result<Self, ReadError> {
        let args = flags;
        Self::read_with_args(data, args)
    }
}

/// [GlyphPatches](https://w3c.github.io/IFT/Overview.html#glyphpatches)
#[derive(Clone)]
pub struct GlyphPatches<'a> {
    data: FontData<'a>,
    flags: GlyphKeyedFlags,
}

#[allow(clippy::needless_lifetimes)]
impl<'a> GlyphPatches<'a> {
    pub const MIN_SIZE: usize = (u32::RAW_BYTE_LEN + u8::RAW_BYTE_LEN);
    basic_table_impls!(impl_the_methods);

    pub fn glyph_count(&self) -> u32 {
        let range = self.glyph_count_byte_range();
        self.data.read_at(range.start).ok().unwrap()
    }

    pub fn table_count(&self) -> u8 {
        let range = self.table_count_byte_range();
        self.data.read_at(range.start).ok().unwrap()
    }

    pub fn glyph_ids(&self) -> ComputedArray<'a, U16Or24> {
        let range = self.glyph_ids_byte_range();
        self.data
            .read_with_args(range, self.flags())
            .unwrap_or_default()
    }

    pub fn tables(&self) -> &'a [BigEndian<Tag>] {
        let range = self.tables_byte_range();
        self.data.read_array(range).ok().unwrap_or_default()
    }

    pub fn glyph_data_offsets(&self) -> &'a [BigEndian<Offset32>] {
        let range = self.glyph_data_offsets_byte_range();
        self.data.read_array(range).ok().unwrap_or_default()
    }

    /// A dynamically resolving wrapper for [`glyph_data_offsets`][Self::glyph_data_offsets].
    pub fn glyph_data(&self) -> ArrayOfOffsets<'a, GlyphData<'a>, Offset32> {
        let data = self.data;
        let offsets = self.glyph_data_offsets();
        ArrayOfOffsets::new(offsets, data, ())
    }

    pub(crate) fn flags(&self) -> GlyphKeyedFlags {
        self.flags
    }

    pub fn glyph_count_byte_range(&self) -> Range<usize> {
        let start = 0;
        let end = start + u32::RAW_BYTE_LEN;
        start..end
    }

    pub fn table_count_byte_range(&self) -> Range<usize> {
        let start = self.glyph_count_byte_range().end;
        let end = start + u8::RAW_BYTE_LEN;
        start..end
    }

    pub fn glyph_ids_byte_range(&self) -> Range<usize> {
        let glyph_count = self.glyph_count();
        let start = self.table_count_byte_range().end;
        let end = start
            + (transforms::to_usize(glyph_count))
                .saturating_mul(<U16Or24 as ComputeSize>::compute_size(self.flags()).unwrap_or(0));
        start..end
    }

    pub fn tables_byte_range(&self) -> Range<usize> {
        let table_count = self.table_count();
        let start = self.glyph_ids_byte_range().end;
        let end = start + (transforms::to_usize(table_count)).saturating_mul(Tag::RAW_BYTE_LEN);
        start..end
    }

    pub fn glyph_data_offsets_byte_range(&self) -> Range<usize> {
        let glyph_count = self.glyph_count();
        let table_count = self.table_count();
        let start = self.tables_byte_range().end;
        let end = start
            + (transforms::multiply_add(glyph_count, table_count, 1_usize))
                .saturating_mul(Offset32::RAW_BYTE_LEN);
        start..end
    }
}

const _: () = assert!(FontData::default_data_long_enough(GlyphPatches::MIN_SIZE));

impl Default for GlyphPatches<'_> {
    fn default() -> Self {
        Self {
            data: FontData::default_table_data(),
            flags: Default::default(),
        }
    }
}

#[cfg(feature = "experimental_traverse")]
impl<'a> SomeTable<'a> for GlyphPatches<'a> {
    fn type_name(&self) -> &str {
        "GlyphPatches"
    }
    fn get_field(&self, idx: usize) -> Option<Field<'a>> {
        match idx {
            0usize => Some(Field::new("glyph_count", self.glyph_count())),
            1usize => Some(Field::new("table_count", self.table_count())),
            2usize => Some(Field::new("glyph_ids", traversal::FieldType::Unknown)),
            3usize => Some(Field::new("tables", self.tables())),
            4usize => Some(Field::new(
                "glyph_data_offsets",
                FieldType::from(self.glyph_data()),
            )),
            _ => None,
        }
    }
}

#[cfg(feature = "experimental_traverse")]
#[allow(clippy::needless_lifetimes)]
impl<'a> std::fmt::Debug for GlyphPatches<'a> {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        (self as &dyn SomeTable<'a>).fmt(f)
    }
}

impl<'a> MinByteRange<'a> for GlyphData<'a> {
    fn min_byte_range(&self) -> Range<usize> {
        0..self.data_byte_range().end
    }
    fn min_table_bytes(&self) -> &'a [u8] {
        let range = self.min_byte_range();
        self.data.as_bytes().get(range).unwrap_or_default()
    }
}

impl ReadArgs for GlyphData<'_> {
    type Args = ();
}

impl<'a> FontRead<'a> for GlyphData<'a> {
    fn read_with_args(data: FontData<'a>, _: ()) -> Result<Self, ReadError> {
        #[allow(clippy::absurd_extreme_comparisons)]
        if data.len() < Self::MIN_SIZE {
            return Err(ReadError::OutOfBounds);
        }
        Ok(Self { data })
    }
}

#[derive(Clone)]
pub struct GlyphData<'a> {
    data: FontData<'a>,
}

#[allow(clippy::needless_lifetimes)]
impl<'a> GlyphData<'a> {
    pub const MIN_SIZE: usize = 0;
    basic_table_impls!(impl_the_methods);

    pub fn data(&self) -> &'a [u8] {
        let range = self.data_byte_range();
        self.data.read_array(range).ok().unwrap_or_default()
    }

    pub fn data_byte_range(&self) -> Range<usize> {
        let start = 0;
        let end =
            start + self.data.len().saturating_sub(start) / u8::RAW_BYTE_LEN * u8::RAW_BYTE_LEN;
        start..end
    }
}

#[allow(clippy::absurd_extreme_comparisons)]
const _: () = assert!(FontData::default_data_long_enough(GlyphData::MIN_SIZE));

impl Default for GlyphData<'_> {
    fn default() -> Self {
        Self {
            data: FontData::default_table_data(),
        }
    }
}

#[cfg(feature = "experimental_traverse")]
impl<'a> SomeTable<'a> for GlyphData<'a> {
    fn type_name(&self) -> &str {
        "GlyphData"
    }
    fn get_field(&self, idx: usize) -> Option<Field<'a>> {
        match idx {
            0usize => Some(Field::new("data", self.data())),
            _ => None,
        }
    }
}

#[cfg(feature = "experimental_traverse")]
#[allow(clippy::needless_lifetimes)]
impl<'a> std::fmt::Debug for GlyphData<'a> {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        (self as &dyn SomeTable<'a>).fmt(f)
    }
}

Coverage Report

Created: 2026-07-25 07:50