/rust/registry/src/index.crates.io-1949cf8c6b5b557f/read-fonts-0.46.0/generated/generated_bitmap.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::*;

/// [BitmapSize](https://learn.microsoft.com/en-us/typography/opentype/spec/eblc#bitmapsize-record) record.
#[derive(Clone, Debug, PartialEq, Eq, PartialOrd, Ord, Hash, Copy, bytemuck :: AnyBitPattern)]
#[repr(C)]
#[repr(packed)]
pub struct BitmapSize {
    /// Offset to IndexSubtableList, from beginning of EBLC/CBLC.
    pub index_subtable_list_offset: BigEndian<u32>,
    /// Total size in bytes of the IndexSubtableList including its array of IndexSubtables.
    pub index_subtable_list_size: BigEndian<u32>,
    /// Number of IndexSubtables in the IndexSubtableList.
    pub number_of_index_subtables: BigEndian<u32>,
    /// Not used; set to 0.
    pub color_ref: BigEndian<u32>,
    /// Line metrics for text rendered horizontally.
    pub hori: SbitLineMetrics,
    /// Line metrics for text rendered vertically.
    pub vert: SbitLineMetrics,
    /// Lowest glyph index for this size.
    pub start_glyph_index: BigEndian<GlyphId16>,
    /// Highest glyph index for this size.
    pub end_glyph_index: BigEndian<GlyphId16>,
    /// Horizontal pixels per em.
    pub ppem_x: u8,
    /// Vertical pixels per em.
    pub ppem_y: u8,
    /// The Microsoft rasterizer v.1.7 or greater supports the following
    /// bitDepth values, as described below: 1, 2, 4, and 8 (and 32 for CBLC).
    pub bit_depth: u8,
    /// Vertical or horizontal.
    pub flags: BigEndian<BitmapFlags>,
}

impl BitmapSize {
    /// Offset to IndexSubtableList, from beginning of EBLC/CBLC.
    pub fn index_subtable_list_offset(&self) -> u32 {
        self.index_subtable_list_offset.get()
    }

    /// Total size in bytes of the IndexSubtableList including its array of IndexSubtables.
    pub fn index_subtable_list_size(&self) -> u32 {
        self.index_subtable_list_size.get()
    }

    /// Number of IndexSubtables in the IndexSubtableList.
    pub fn number_of_index_subtables(&self) -> u32 {
        self.number_of_index_subtables.get()
    }

    /// Not used; set to 0.
    pub fn color_ref(&self) -> u32 {
        self.color_ref.get()
    }

    /// Line metrics for text rendered horizontally.
    pub fn hori(&self) -> &SbitLineMetrics {
        &self.hori
    }

    /// Line metrics for text rendered vertically.
    pub fn vert(&self) -> &SbitLineMetrics {
        &self.vert
    }

    /// Lowest glyph index for this size.
    pub fn start_glyph_index(&self) -> GlyphId16 {
        self.start_glyph_index.get()
    }

    /// Highest glyph index for this size.
    pub fn end_glyph_index(&self) -> GlyphId16 {
        self.end_glyph_index.get()
    }

    /// Horizontal pixels per em.
    pub fn ppem_x(&self) -> u8 {
        self.ppem_x
    }

    /// Vertical pixels per em.
    pub fn ppem_y(&self) -> u8 {
        self.ppem_y
    }

    /// The Microsoft rasterizer v.1.7 or greater supports the following
    /// bitDepth values, as described below: 1, 2, 4, and 8 (and 32 for CBLC).
    pub fn bit_depth(&self) -> u8 {
        self.bit_depth
    }

    /// Vertical or horizontal.
    pub fn flags(&self) -> BitmapFlags {
        self.flags.get()
    }
}

impl FixedSize for BitmapSize {
    const RAW_BYTE_LEN: usize = u32::RAW_BYTE_LEN
        + u32::RAW_BYTE_LEN
        + u32::RAW_BYTE_LEN
        + u32::RAW_BYTE_LEN
        + SbitLineMetrics::RAW_BYTE_LEN
        + SbitLineMetrics::RAW_BYTE_LEN
        + GlyphId16::RAW_BYTE_LEN
        + GlyphId16::RAW_BYTE_LEN
        + u8::RAW_BYTE_LEN
        + u8::RAW_BYTE_LEN
        + u8::RAW_BYTE_LEN
        + BitmapFlags::RAW_BYTE_LEN;
}

/// [SbitLineMetrics](https://learn.microsoft.com/en-us/typography/opentype/spec/eblc#sbitlinemetrics-record) record.
#[derive(Clone, Debug, PartialEq, Eq, PartialOrd, Ord, Hash, Copy, bytemuck :: AnyBitPattern)]
#[repr(C)]
#[repr(packed)]
pub struct SbitLineMetrics {
    pub ascender: BigEndian<i8>,
    pub descender: BigEndian<i8>,
    pub width_max: u8,
    pub caret_slope_numerator: BigEndian<i8>,
    pub caret_slope_denominator: u8,
    pub caret_offset: BigEndian<i8>,
    pub min_origin_sb: BigEndian<i8>,
    pub min_advance_sb: BigEndian<i8>,
    pub max_before_bl: BigEndian<i8>,
    pub min_after_bl: BigEndian<i8>,
    pub pad1: BigEndian<i8>,
    pub pad2: BigEndian<i8>,
}

impl SbitLineMetrics {
    pub fn ascender(&self) -> i8 {
        self.ascender.get()
    }

    pub fn descender(&self) -> i8 {
        self.descender.get()
    }

    pub fn width_max(&self) -> u8 {
        self.width_max
    }

    pub fn caret_slope_numerator(&self) -> i8 {
        self.caret_slope_numerator.get()
    }

    pub fn caret_slope_denominator(&self) -> u8 {
        self.caret_slope_denominator
    }

    pub fn caret_offset(&self) -> i8 {
        self.caret_offset.get()
    }

    pub fn min_origin_sb(&self) -> i8 {
        self.min_origin_sb.get()
    }

    pub fn min_advance_sb(&self) -> i8 {
        self.min_advance_sb.get()
    }

    pub fn max_before_bl(&self) -> i8 {
        self.max_before_bl.get()
    }

    pub fn min_after_bl(&self) -> i8 {
        self.min_after_bl.get()
    }

    pub fn pad1(&self) -> i8 {
        self.pad1.get()
    }

    pub fn pad2(&self) -> i8 {
        self.pad2.get()
    }
}

impl FixedSize for SbitLineMetrics {
    const RAW_BYTE_LEN: usize = i8::RAW_BYTE_LEN
        + i8::RAW_BYTE_LEN
        + u8::RAW_BYTE_LEN
        + i8::RAW_BYTE_LEN
        + u8::RAW_BYTE_LEN
        + i8::RAW_BYTE_LEN
        + i8::RAW_BYTE_LEN
        + i8::RAW_BYTE_LEN
        + i8::RAW_BYTE_LEN
        + i8::RAW_BYTE_LEN
        + i8::RAW_BYTE_LEN
        + i8::RAW_BYTE_LEN;
}

/// [Bitmap flags](https://learn.microsoft.com/en-us/typography/opentype/spec/eblc#bitmap-flags).
#[derive(Clone, Copy, Default, PartialEq, Eq, PartialOrd, Ord, Hash, bytemuck :: AnyBitPattern)]
#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
#[repr(transparent)]
pub struct BitmapFlags {
    bits: u8,
}

impl BitmapFlags {
    /// Horizontal
    pub const HORIZONTAL_METRICS: Self = Self { bits: 0x01 };

    /// Vertical
    pub const VERTICAL_METRICS: Self = Self { bits: 0x02 };
}

impl BitmapFlags {
    ///  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::HORIZONTAL_METRICS.bits | Self::VERTICAL_METRICS.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 BitmapFlags {
    type Output = Self;

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

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

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

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

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

impl std::ops::Not for BitmapFlags {
    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 BitmapFlags {
    fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
        let members: &[(&str, Self)] = &[
            ("HORIZONTAL_METRICS", Self::HORIZONTAL_METRICS),
            ("VERTICAL_METRICS", Self::VERTICAL_METRICS),
        ];
        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 BitmapFlags {
    fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
        std::fmt::Binary::fmt(&self.bits, f)
    }
}

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

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

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

impl font_types::Scalar for BitmapFlags {
    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)
    }
}

/// [BigGlyphMetrics](https://learn.microsoft.com/en-us/typography/opentype/spec/eblc#bigglyphmetrics) record.
#[derive(Clone, Debug, PartialEq, Eq, PartialOrd, Ord, Hash, Copy, bytemuck :: AnyBitPattern)]
#[repr(C)]
#[repr(packed)]
pub struct BigGlyphMetrics {
    /// Number of rows of data.
    pub height: u8,
    /// Number of columns of data.
    pub width: u8,
    /// Distance in pixels from the horizontal origin to the left edge of the bitmap.
    pub hori_bearing_x: BigEndian<i8>,
    /// Distance in pixels from the horizontal origin to the top edge of the bitmap.
    pub hori_bearing_y: BigEndian<i8>,
    /// Horizontal advance width in pixels.
    pub hori_advance: u8,
    /// Distance in pixels from the vertical origin to the left edge of the bitmap.
    pub vert_bearing_x: BigEndian<i8>,
    /// Distance in pixels from the vertical origin to the top edge of the bitmap.
    pub vert_bearing_y: BigEndian<i8>,
    /// Vertical advance width in pixels.
    pub vert_advance: u8,
}

impl BigGlyphMetrics {
    /// Number of rows of data.
    pub fn height(&self) -> u8 {
        self.height
    }

    /// Number of columns of data.
    pub fn width(&self) -> u8 {
        self.width
    }

    /// Distance in pixels from the horizontal origin to the left edge of the bitmap.
    pub fn hori_bearing_x(&self) -> i8 {
        self.hori_bearing_x.get()
    }

    /// Distance in pixels from the horizontal origin to the top edge of the bitmap.
    pub fn hori_bearing_y(&self) -> i8 {
        self.hori_bearing_y.get()
    }

    /// Horizontal advance width in pixels.
    pub fn hori_advance(&self) -> u8 {
        self.hori_advance
    }

    /// Distance in pixels from the vertical origin to the left edge of the bitmap.
    pub fn vert_bearing_x(&self) -> i8 {
        self.vert_bearing_x.get()
    }

    /// Distance in pixels from the vertical origin to the top edge of the bitmap.
    pub fn vert_bearing_y(&self) -> i8 {
        self.vert_bearing_y.get()
    }

    /// Vertical advance width in pixels.
    pub fn vert_advance(&self) -> u8 {
        self.vert_advance
    }
}

impl FixedSize for BigGlyphMetrics {
    const RAW_BYTE_LEN: usize = u8::RAW_BYTE_LEN
        + u8::RAW_BYTE_LEN
        + i8::RAW_BYTE_LEN
        + i8::RAW_BYTE_LEN
        + u8::RAW_BYTE_LEN
        + i8::RAW_BYTE_LEN
        + i8::RAW_BYTE_LEN
        + u8::RAW_BYTE_LEN;
}

/// [SmallGlyphMetrics](https://learn.microsoft.com/en-us/typography/opentype/spec/eblc#smallglyphmetrics) record.
#[derive(Clone, Debug, PartialEq, Eq, PartialOrd, Ord, Hash, Copy, bytemuck :: AnyBitPattern)]
#[repr(C)]
#[repr(packed)]
pub struct SmallGlyphMetrics {
    /// Number of rows of data.
    pub height: u8,
    /// Number of columns of data.
    pub width: u8,
    /// Distance in pixels from the horizontal origin to the left edge of the bitmap (for horizontal text); or distance in pixels from the vertical origin to the top edge of the bitmap (for vertical text).
    pub bearing_x: BigEndian<i8>,
    /// Distance in pixels from the horizontal origin to the top edge of the bitmap (for horizontal text); or distance in pixels from the vertical origin to the left edge of the bitmap (for vertical text).
    pub bearing_y: BigEndian<i8>,
    /// Horizontal or vertical advance width in pixels.
    pub advance: u8,
}

impl SmallGlyphMetrics {
    /// Number of rows of data.
    pub fn height(&self) -> u8 {
        self.height
    }

    /// Number of columns of data.
    pub fn width(&self) -> u8 {
        self.width
    }

    /// Distance in pixels from the horizontal origin to the left edge of the bitmap (for horizontal text); or distance in pixels from the vertical origin to the top edge of the bitmap (for vertical text).
    pub fn bearing_x(&self) -> i8 {
        self.bearing_x.get()
    }

    /// Distance in pixels from the horizontal origin to the top edge of the bitmap (for horizontal text); or distance in pixels from the vertical origin to the left edge of the bitmap (for vertical text).
    pub fn bearing_y(&self) -> i8 {
        self.bearing_y.get()
    }

    /// Horizontal or vertical advance width in pixels.
    pub fn advance(&self) -> u8 {
        self.advance
    }
}

impl FixedSize for SmallGlyphMetrics {
    const RAW_BYTE_LEN: usize = u8::RAW_BYTE_LEN
        + u8::RAW_BYTE_LEN
        + i8::RAW_BYTE_LEN
        + i8::RAW_BYTE_LEN
        + u8::RAW_BYTE_LEN;
}

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

impl ReadArgs for IndexSubtableList<'_> {
    type Args = u32;
}

impl<'a> FontRead<'a> for IndexSubtableList<'a> {
    fn read_with_args(data: FontData<'a>, args: u32) -> Result<Self, ReadError> {
        let number_of_index_subtables = args;

        #[allow(clippy::absurd_extreme_comparisons)]
        if data.len() < Self::MIN_SIZE {
            return Err(ReadError::OutOfBounds);
        }
        let Some(data) = TableDataRef::new(data.as_bytes()) else {
            return Err(ReadError::OutOfBounds);
        };
        Ok(Self {
            data,
            number_of_index_subtables,
        })
    }
}

impl<'a> IndexSubtableList<'a> {
    /// A constructor that requires additional arguments.
    ///
    /// This type requires some external state in order to be
    /// parsed.
    pub fn read(data: FontData<'a>, number_of_index_subtables: u32) -> Result<Self, ReadError> {
        let args = number_of_index_subtables;
        Self::read_with_args(data, args)
    }
}

/// The fields at the start of the table, which are read directly.
#[derive(Clone, Copy, bytemuck :: AnyBitPattern)]
#[repr(C, packed)]
#[doc(hidden)]
pub struct IndexSubtableListFixedHeader {}

#[allow(clippy::absurd_extreme_comparisons)]
const _: () =
    assert!(std::mem::size_of::<IndexSubtableListFixedHeader>() <= IndexSubtableList::MIN_SIZE);

/// [IndexSubtableList](https://learn.microsoft.com/en-us/typography/opentype/spec/eblc#indexsubtablelist) table.
#[derive(Clone)]
pub struct IndexSubtableList<'a> {
    data: TableDataRef<'a, IndexSubtableListFixedHeader>,
    number_of_index_subtables: u32,
}

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

    /// Array of IndexSubtableRecords.
    pub fn index_subtable_records(&self) -> &'a [IndexSubtableRecord] {
        let range = self.index_subtable_records_byte_range();
        self.offset_data()
            .read_array(range)
            .ok()
            .unwrap_or_default()
    }

    pub(crate) fn number_of_index_subtables(&self) -> u32 {
        self.number_of_index_subtables
    }

    pub fn index_subtable_records_byte_range(&self) -> Range<usize> {
        let number_of_index_subtables = self.number_of_index_subtables();
        let start = 0;
        let end = start
            + (transforms::to_usize(number_of_index_subtables))
                .saturating_mul(IndexSubtableRecord::RAW_BYTE_LEN);
        start..end
    }
}

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

impl Default for IndexSubtableList<'_> {
    fn default() -> Self {
        Self {
            data: TableDataRef::new(FontData::default_table_data().as_bytes())
                .unwrap_or_else(|| unreachable!("the default data covers MIN_SIZE")),
            number_of_index_subtables: Default::default(),
        }
    }
}

#[derive(Clone, Debug, Copy, bytemuck :: AnyBitPattern)]
#[repr(C)]
#[repr(packed)]
pub struct IndexSubtableRecord {
    /// First glyph ID of this range.
    pub first_glyph_index: BigEndian<GlyphId16>,
    /// Last glyph ID of this range (inclusive).
    pub last_glyph_index: BigEndian<GlyphId16>,
    /// Offset to an IndexSubtable from the start of the IndexSubtableList.
    pub index_subtable_offset: BigEndian<Offset32>,
}

impl IndexSubtableRecord {
    /// First glyph ID of this range.
    pub fn first_glyph_index(&self) -> GlyphId16 {
        self.first_glyph_index.get()
    }

    /// Last glyph ID of this range (inclusive).
    pub fn last_glyph_index(&self) -> GlyphId16 {
        self.last_glyph_index.get()
    }

    /// Offset to an IndexSubtable from the start of the IndexSubtableList.
    pub fn index_subtable_offset(&self) -> Offset32 {
        self.index_subtable_offset.get()
    }

    /// Offset to an IndexSubtable from the start of the IndexSubtableList.
    ///
    /// The `data` argument should be retrieved from the parent table
    /// By calling its `offset_data` method.
    pub fn index_subtable<'a>(&self, data: FontData<'a>) -> Result<IndexSubtable<'a>, ReadError> {
        let args = (self.last_glyph_index(), self.first_glyph_index());
        self.index_subtable_offset().resolve_with_args(data, args)
    }
}

impl FixedSize for IndexSubtableRecord {
    const RAW_BYTE_LEN: usize =
        GlyphId16::RAW_BYTE_LEN + GlyphId16::RAW_BYTE_LEN + Offset32::RAW_BYTE_LEN;
}

impl Format<u16> for IndexSubtable1<'_> {
    const FORMAT: u16 = 1;
}

impl<'a> MinByteRange<'a> for IndexSubtable1<'a> {
    fn min_byte_range(&self) -> Range<usize> {
        0..self.sbit_offsets_byte_range().end
    }
    fn min_table_bytes(&self) -> &'a [u8] {
        let range = self.min_byte_range();
        self.offset_data().as_bytes().get(range).unwrap_or_default()
    }
}

impl ReadArgs for IndexSubtable1<'_> {
    type Args = (GlyphId16, GlyphId16);
}

impl<'a> FontRead<'a> for IndexSubtable1<'a> {
    fn read_with_args(data: FontData<'a>, args: (GlyphId16, GlyphId16)) -> Result<Self, ReadError> {
        let (last_glyph_index, first_glyph_index) = args;

        #[allow(clippy::absurd_extreme_comparisons)]
        if data.len() < Self::MIN_SIZE {
            return Err(ReadError::OutOfBounds);
        }
        let Some(data) = TableDataRef::new(data.as_bytes()) else {
            return Err(ReadError::OutOfBounds);
        };
        Ok(Self {
            data,
            last_glyph_index,
            first_glyph_index,
        })
    }
}

impl<'a> IndexSubtable1<'a> {
    /// A constructor that requires additional arguments.
    ///
    /// This type requires some external state in order to be
    /// parsed.
    pub fn read(
        data: FontData<'a>,
        last_glyph_index: GlyphId16,
        first_glyph_index: GlyphId16,
    ) -> Result<Self, ReadError> {
        let args = (last_glyph_index, first_glyph_index);
        Self::read_with_args(data, args)
    }
}

/// The fields at the start of the table, which are read directly.
#[derive(Clone, Copy, bytemuck :: AnyBitPattern)]
#[repr(C, packed)]
#[doc(hidden)]
pub struct IndexSubtable1FixedHeader {
    pub index_format: BigEndian<u16>,
    pub image_format: BigEndian<u16>,
    pub image_data_offset: BigEndian<u32>,
}

#[allow(clippy::absurd_extreme_comparisons)]
const _: () = assert!(std::mem::size_of::<IndexSubtable1FixedHeader>() <= IndexSubtable1::MIN_SIZE);

/// [IndexSubTable1](https://learn.microsoft.com/en-us/typography/opentype/spec/eblc#indexsubtable1-variable-metrics-glyphs-with-4-byte-offsets): variable-metrics glyphs with 4-byte offsets.
#[derive(Clone)]
pub struct IndexSubtable1<'a> {
    data: TableDataRef<'a, IndexSubtable1FixedHeader>,
    last_glyph_index: GlyphId16,
    first_glyph_index: GlyphId16,
}

#[allow(clippy::needless_lifetimes)]
impl<'a> IndexSubtable1<'a> {
    pub const MIN_SIZE: usize = (u16::RAW_BYTE_LEN + u16::RAW_BYTE_LEN + u32::RAW_BYTE_LEN);
    basic_table_impls!(impl_the_methods);

    /// Format of this IndexSubTable.
    pub fn index_format(&self) -> u16 {
        self.data.header().index_format.get()
    }

    /// Format of EBDT image data.
    pub fn image_format(&self) -> u16 {
        self.data.header().image_format.get()
    }

    /// Offset to image data in EBDT table.
    pub fn image_data_offset(&self) -> u32 {
        self.data.header().image_data_offset.get()
    }

    pub fn sbit_offsets(&self) -> &'a [BigEndian<u32>] {
        let range = self.sbit_offsets_byte_range();
        self.offset_data()
            .read_array(range)
            .ok()
            .unwrap_or_default()
    }

    pub(crate) fn last_glyph_index(&self) -> GlyphId16 {
        self.last_glyph_index
    }

    pub(crate) fn first_glyph_index(&self) -> GlyphId16 {
        self.first_glyph_index
    }

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

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

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

    pub fn sbit_offsets_byte_range(&self) -> Range<usize> {
        let last_glyph_index = self.last_glyph_index();
        let first_glyph_index = self.first_glyph_index();
        let start = self.image_data_offset_byte_range().end;
        let end = start
            + (transforms::subtract_add_two(last_glyph_index, first_glyph_index))
                .saturating_mul(u32::RAW_BYTE_LEN);
        start..end
    }
}

const _: () = assert!(FontData::default_data_long_enough(IndexSubtable1::MIN_SIZE));

impl Default for IndexSubtable1<'_> {
    fn default() -> Self {
        Self {
            data: TableDataRef::new(FontData::default_format_1_u16_table_data().as_bytes())
                .unwrap_or_else(|| unreachable!("the default data covers MIN_SIZE")),
            last_glyph_index: Default::default(),
            first_glyph_index: Default::default(),
        }
    }
}

impl Format<u16> for IndexSubtable2<'_> {
    const FORMAT: u16 = 2;
}

impl<'a> MinByteRange<'a> for IndexSubtable2<'a> {
    fn min_byte_range(&self) -> Range<usize> {
        0..self.big_metrics_byte_range().end
    }
    fn min_table_bytes(&self) -> &'a [u8] {
        let range = self.min_byte_range();
        self.offset_data().as_bytes().get(range).unwrap_or_default()
    }
}

impl ReadArgs for IndexSubtable2<'_> {
    type Args = ();
}

impl<'a> FontRead<'a> for IndexSubtable2<'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);
        }
        let Some(data) = TableDataRef::new(data.as_bytes()) else {
            return Err(ReadError::OutOfBounds);
        };
        Ok(Self { data })
    }
}

/// The fields at the start of the table, which are read directly.
#[derive(Clone, Copy, bytemuck :: AnyBitPattern)]
#[repr(C, packed)]
#[doc(hidden)]
pub struct IndexSubtable2FixedHeader {
    pub index_format: BigEndian<u16>,
    pub image_format: BigEndian<u16>,
    pub image_data_offset: BigEndian<u32>,
    pub image_size: BigEndian<u32>,
    pub big_metrics: BigGlyphMetrics,
}

#[allow(clippy::absurd_extreme_comparisons)]
const _: () = assert!(std::mem::size_of::<IndexSubtable2FixedHeader>() <= IndexSubtable2::MIN_SIZE);

/// [IndexSubTable2](https://learn.microsoft.com/en-us/typography/opentype/spec/eblc#indexsubtable2-all-glyphs-have-identical-metrics): all glyphs have identical metrics.
#[derive(Clone)]
pub struct IndexSubtable2<'a> {
    data: TableDataRef<'a, IndexSubtable2FixedHeader>,
}

#[allow(clippy::needless_lifetimes)]
impl<'a> IndexSubtable2<'a> {
    pub const MIN_SIZE: usize = (u16::RAW_BYTE_LEN
        + u16::RAW_BYTE_LEN
        + u32::RAW_BYTE_LEN
        + u32::RAW_BYTE_LEN
        + BigGlyphMetrics::RAW_BYTE_LEN);
    basic_table_impls!(impl_the_methods);

    /// Format of this IndexSubTable.
    pub fn index_format(&self) -> u16 {
        self.data.header().index_format.get()
    }

    /// Format of EBDT image data.
    pub fn image_format(&self) -> u16 {
        self.data.header().image_format.get()
    }

    /// Offset to image data in EBDT table.
    pub fn image_data_offset(&self) -> u32 {
        self.data.header().image_data_offset.get()
    }

    /// All the glyphs are of the same size.
    pub fn image_size(&self) -> u32 {
        self.data.header().image_size.get()
    }

    /// All glyphs have the same metrics; glyph data may be compressed, byte-aligned, or bit-aligned.
    pub fn big_metrics(&self) -> &'a BigGlyphMetrics {
        &self.data.header().big_metrics
    }

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

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

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

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

    pub fn big_metrics_byte_range(&self) -> Range<usize> {
        let start = self.image_size_byte_range().end;
        let end = start + BigGlyphMetrics::RAW_BYTE_LEN;
        start..end
    }
}

impl Format<u16> for IndexSubtable3<'_> {
    const FORMAT: u16 = 3;
}

impl<'a> MinByteRange<'a> for IndexSubtable3<'a> {
    fn min_byte_range(&self) -> Range<usize> {
        0..self.sbit_offsets_byte_range().end
    }
    fn min_table_bytes(&self) -> &'a [u8] {
        let range = self.min_byte_range();
        self.offset_data().as_bytes().get(range).unwrap_or_default()
    }
}

impl ReadArgs for IndexSubtable3<'_> {
    type Args = (GlyphId16, GlyphId16);
}

impl<'a> FontRead<'a> for IndexSubtable3<'a> {
    fn read_with_args(data: FontData<'a>, args: (GlyphId16, GlyphId16)) -> Result<Self, ReadError> {
        let (last_glyph_index, first_glyph_index) = args;

        #[allow(clippy::absurd_extreme_comparisons)]
        if data.len() < Self::MIN_SIZE {
            return Err(ReadError::OutOfBounds);
        }
        let Some(data) = TableDataRef::new(data.as_bytes()) else {
            return Err(ReadError::OutOfBounds);
        };
        Ok(Self {
            data,
            last_glyph_index,
            first_glyph_index,
        })
    }
}

impl<'a> IndexSubtable3<'a> {
    /// A constructor that requires additional arguments.
    ///
    /// This type requires some external state in order to be
    /// parsed.
    pub fn read(
        data: FontData<'a>,
        last_glyph_index: GlyphId16,
        first_glyph_index: GlyphId16,
    ) -> Result<Self, ReadError> {
        let args = (last_glyph_index, first_glyph_index);
        Self::read_with_args(data, args)
    }
}

/// The fields at the start of the table, which are read directly.
#[derive(Clone, Copy, bytemuck :: AnyBitPattern)]
#[repr(C, packed)]
#[doc(hidden)]
pub struct IndexSubtable3FixedHeader {
    pub index_format: BigEndian<u16>,
    pub image_format: BigEndian<u16>,
    pub image_data_offset: BigEndian<u32>,
}

#[allow(clippy::absurd_extreme_comparisons)]
const _: () = assert!(std::mem::size_of::<IndexSubtable3FixedHeader>() <= IndexSubtable3::MIN_SIZE);

/// [IndexSubTable3](https://learn.microsoft.com/en-us/typography/opentype/spec/eblc#indexsubtable3-variable-metrics-glyphs-with-2-byte-offsets): variable-metrics glyphs with 2-byte offsets.
#[derive(Clone)]
pub struct IndexSubtable3<'a> {
    data: TableDataRef<'a, IndexSubtable3FixedHeader>,
    last_glyph_index: GlyphId16,
    first_glyph_index: GlyphId16,
}

#[allow(clippy::needless_lifetimes)]
impl<'a> IndexSubtable3<'a> {
    pub const MIN_SIZE: usize = (u16::RAW_BYTE_LEN + u16::RAW_BYTE_LEN + u32::RAW_BYTE_LEN);
    basic_table_impls!(impl_the_methods);

    /// Format of this IndexSubTable.
    pub fn index_format(&self) -> u16 {
        self.data.header().index_format.get()
    }

    /// Format of EBDT image data.
    pub fn image_format(&self) -> u16 {
        self.data.header().image_format.get()
    }

    /// Offset to image data in EBDT table.
    pub fn image_data_offset(&self) -> u32 {
        self.data.header().image_data_offset.get()
    }

    pub fn sbit_offsets(&self) -> &'a [BigEndian<u16>] {
        let range = self.sbit_offsets_byte_range();
        self.offset_data()
            .read_array(range)
            .ok()
            .unwrap_or_default()
    }

    pub(crate) fn last_glyph_index(&self) -> GlyphId16 {
        self.last_glyph_index
    }

    pub(crate) fn first_glyph_index(&self) -> GlyphId16 {
        self.first_glyph_index
    }

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

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

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

    pub fn sbit_offsets_byte_range(&self) -> Range<usize> {
        let last_glyph_index = self.last_glyph_index();
        let first_glyph_index = self.first_glyph_index();
        let start = self.image_data_offset_byte_range().end;
        let end = start
            + (transforms::subtract_add_two(last_glyph_index, first_glyph_index))
                .saturating_mul(u16::RAW_BYTE_LEN);
        start..end
    }
}

impl Format<u16> for IndexSubtable4<'_> {
    const FORMAT: u16 = 4;
}

impl<'a> MinByteRange<'a> for IndexSubtable4<'a> {
    fn min_byte_range(&self) -> Range<usize> {
        0..self.glyph_array_byte_range().end
    }
    fn min_table_bytes(&self) -> &'a [u8] {
        let range = self.min_byte_range();
        self.offset_data().as_bytes().get(range).unwrap_or_default()
    }
}

impl ReadArgs for IndexSubtable4<'_> {
    type Args = ();
}

impl<'a> FontRead<'a> for IndexSubtable4<'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);
        }
        let Some(data) = TableDataRef::new(data.as_bytes()) else {
            return Err(ReadError::OutOfBounds);
        };
        Ok(Self { data })
    }
}

/// The fields at the start of the table, which are read directly.
#[derive(Clone, Copy, bytemuck :: AnyBitPattern)]
#[repr(C, packed)]
#[doc(hidden)]
pub struct IndexSubtable4FixedHeader {
    pub index_format: BigEndian<u16>,
    pub image_format: BigEndian<u16>,
    pub image_data_offset: BigEndian<u32>,
    pub num_glyphs: BigEndian<u32>,
}

#[allow(clippy::absurd_extreme_comparisons)]
const _: () = assert!(std::mem::size_of::<IndexSubtable4FixedHeader>() <= IndexSubtable4::MIN_SIZE);

/// [IndexSubTable4](https://learn.microsoft.com/en-us/typography/opentype/spec/eblc#indexsubtable3-variable-metrics-glyphs-with-2-byte-offsets): variable-metrics glyphs with sparse glyph codes.
#[derive(Clone)]
pub struct IndexSubtable4<'a> {
    data: TableDataRef<'a, IndexSubtable4FixedHeader>,
}

#[allow(clippy::needless_lifetimes)]
impl<'a> IndexSubtable4<'a> {
    pub const MIN_SIZE: usize =
        (u16::RAW_BYTE_LEN + u16::RAW_BYTE_LEN + u32::RAW_BYTE_LEN + u32::RAW_BYTE_LEN);
    basic_table_impls!(impl_the_methods);

    /// Format of this IndexSubTable.
    pub fn index_format(&self) -> u16 {
        self.data.header().index_format.get()
    }

    /// Format of EBDT image data.
    pub fn image_format(&self) -> u16 {
        self.data.header().image_format.get()
    }

    /// Offset to image data in EBDT table.
    pub fn image_data_offset(&self) -> u32 {
        self.data.header().image_data_offset.get()
    }

    /// Array length.
    pub fn num_glyphs(&self) -> u32 {
        self.data.header().num_glyphs.get()
    }

    /// One per glyph.
    pub fn glyph_array(&self) -> &'a [GlyphIdOffsetPair] {
        let range = self.glyph_array_byte_range();
        self.offset_data()
            .read_array(range)
            .ok()
            .unwrap_or_default()
    }

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

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

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

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

    pub fn glyph_array_byte_range(&self) -> Range<usize> {
        let num_glyphs = self.num_glyphs();
        let start = self.num_glyphs_byte_range().end;
        let end = start
            + (transforms::add(num_glyphs, 1_usize))
                .saturating_mul(GlyphIdOffsetPair::RAW_BYTE_LEN);
        start..end
    }
}

/// [GlyphIdOffsetPair](https://learn.microsoft.com/en-us/typography/opentype/spec/eblc#glyphidoffsetpair-record) record.
#[derive(Clone, Debug, PartialEq, Eq, PartialOrd, Ord, Hash, Copy, bytemuck :: AnyBitPattern)]
#[repr(C)]
#[repr(packed)]
pub struct GlyphIdOffsetPair {
    /// Glyph ID of glyph present.
    pub glyph_id: BigEndian<GlyphId16>,
    /// Location in EBDT.
    pub sbit_offset: BigEndian<u16>,
}

impl GlyphIdOffsetPair {
    /// Glyph ID of glyph present.
    pub fn glyph_id(&self) -> GlyphId16 {
        self.glyph_id.get()
    }

    /// Location in EBDT.
    pub fn sbit_offset(&self) -> u16 {
        self.sbit_offset.get()
    }
}

impl FixedSize for GlyphIdOffsetPair {
    const RAW_BYTE_LEN: usize = GlyphId16::RAW_BYTE_LEN + u16::RAW_BYTE_LEN;
}

impl Format<u16> for IndexSubtable5<'_> {
    const FORMAT: u16 = 5;
}

impl<'a> MinByteRange<'a> for IndexSubtable5<'a> {
    fn min_byte_range(&self) -> Range<usize> {
        0..self.glyph_array_byte_range().end
    }
    fn min_table_bytes(&self) -> &'a [u8] {
        let range = self.min_byte_range();
        self.offset_data().as_bytes().get(range).unwrap_or_default()
    }
}

impl ReadArgs for IndexSubtable5<'_> {
    type Args = ();
}

impl<'a> FontRead<'a> for IndexSubtable5<'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);
        }
        let Some(data) = TableDataRef::new(data.as_bytes()) else {
            return Err(ReadError::OutOfBounds);
        };
        Ok(Self { data })
    }
}

/// The fields at the start of the table, which are read directly.
#[derive(Clone, Copy, bytemuck :: AnyBitPattern)]
#[repr(C, packed)]
#[doc(hidden)]
pub struct IndexSubtable5FixedHeader {
    pub index_format: BigEndian<u16>,
    pub image_format: BigEndian<u16>,
    pub image_data_offset: BigEndian<u32>,
    pub image_size: BigEndian<u32>,
    pub big_metrics: BigGlyphMetrics,
    pub num_glyphs: BigEndian<u32>,
}

#[allow(clippy::absurd_extreme_comparisons)]
const _: () = assert!(std::mem::size_of::<IndexSubtable5FixedHeader>() <= IndexSubtable5::MIN_SIZE);

/// [IndexSubTable5](https://learn.microsoft.com/en-us/typography/opentype/spec/eblc#indexsubtable5-constant-metrics-glyphs-with-sparse-glyph-codes): constant-metrics glyphs with sparse glyph codes
#[derive(Clone)]
pub struct IndexSubtable5<'a> {
    data: TableDataRef<'a, IndexSubtable5FixedHeader>,
}

#[allow(clippy::needless_lifetimes)]
impl<'a> IndexSubtable5<'a> {
    pub const MIN_SIZE: usize = (u16::RAW_BYTE_LEN
        + u16::RAW_BYTE_LEN
        + u32::RAW_BYTE_LEN
        + u32::RAW_BYTE_LEN
        + BigGlyphMetrics::RAW_BYTE_LEN
        + u32::RAW_BYTE_LEN);
    basic_table_impls!(impl_the_methods);

    /// Format of this IndexSubTable.
    pub fn index_format(&self) -> u16 {
        self.data.header().index_format.get()
    }

    /// Format of EBDT image data.
    pub fn image_format(&self) -> u16 {
        self.data.header().image_format.get()
    }

    /// Offset to image data in EBDT table.
    pub fn image_data_offset(&self) -> u32 {
        self.data.header().image_data_offset.get()
    }

    /// All glyphs have the same data size.
    pub fn image_size(&self) -> u32 {
        self.data.header().image_size.get()
    }

    /// All glyphs have the same metrics.
    pub fn big_metrics(&self) -> &'a BigGlyphMetrics {
        &self.data.header().big_metrics
    }

    /// Array length.
    pub fn num_glyphs(&self) -> u32 {
        self.data.header().num_glyphs.get()
    }

    /// One per glyph, sorted by glyhph ID.
    pub fn glyph_array(&self) -> &'a [BigEndian<GlyphId16>] {
        let range = self.glyph_array_byte_range();
        self.offset_data()
            .read_array(range)
            .ok()
            .unwrap_or_default()
    }

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

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

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

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

    pub fn big_metrics_byte_range(&self) -> Range<usize> {
        let start = self.image_size_byte_range().end;
        let end = start + BigGlyphMetrics::RAW_BYTE_LEN;
        start..end
    }

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

    pub fn glyph_array_byte_range(&self) -> Range<usize> {
        let num_glyphs = self.num_glyphs();
        let start = self.num_glyphs_byte_range().end;
        let end =
            start + (transforms::to_usize(num_glyphs)).saturating_mul(GlyphId16::RAW_BYTE_LEN);
        start..end
    }
}

/// [EbdtComponent](https://learn.microsoft.com/en-us/typography/opentype/spec/ebdt#ebdtcomponent-record) record.
#[derive(Clone, Debug, PartialEq, Eq, PartialOrd, Ord, Hash, Copy, bytemuck :: AnyBitPattern)]
#[repr(C)]
#[repr(packed)]
pub struct BdtComponent {
    /// Component glyph ID.
    pub glyph_id: BigEndian<GlyphId16>,
    /// Position of component left.
    pub x_offset: BigEndian<i8>,
    /// Position of component top.
    pub y_offset: BigEndian<i8>,
}

impl BdtComponent {
    /// Component glyph ID.
    pub fn glyph_id(&self) -> GlyphId16 {
        self.glyph_id.get()
    }

    /// Position of component left.
    pub fn x_offset(&self) -> i8 {
        self.x_offset.get()
    }

    /// Position of component top.
    pub fn y_offset(&self) -> i8 {
        self.y_offset.get()
    }
}

impl FixedSize for BdtComponent {
    const RAW_BYTE_LEN: usize = GlyphId16::RAW_BYTE_LEN + i8::RAW_BYTE_LEN + i8::RAW_BYTE_LEN;
}

Coverage Report

Created: 2026-10-24 07:19