read-fonts 0.46.0

// 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::*;

impl<'a> MinByteRange<'a> for Cff2Header<'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.offset_data().as_bytes().get(range).unwrap_or_default()
    }
}

impl ReadArgs for Cff2Header<'_> {
    type Args = ();
}

impl<'a> FontRead<'a> for Cff2Header<'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 Cff2HeaderFixedHeader {
    pub major_version: u8,
    pub minor_version: u8,
    pub header_size: u8,
    pub top_dict_length: BigEndian<u16>,
}

#[allow(clippy::absurd_extreme_comparisons)]
const _: () = assert!(std::mem::size_of::<Cff2HeaderFixedHeader>() <= Cff2Header::MIN_SIZE);

/// [Compact Font Format (CFF) version 2](https://learn.microsoft.com/en-us/typography/opentype/spec/cff2) table header
#[derive(Clone)]
pub struct Cff2Header<'a> {
    data: TableDataRef<'a, Cff2HeaderFixedHeader>,
}

#[allow(clippy::needless_lifetimes)]
impl<'a> Cff2Header<'a> {
    pub const MIN_SIZE: usize =
        (u8::RAW_BYTE_LEN + u8::RAW_BYTE_LEN + u8::RAW_BYTE_LEN + u16::RAW_BYTE_LEN);
    basic_table_impls!(impl_the_methods);

    /// Format major version (set to 2).
    pub fn major_version(&self) -> u8 {
        self.data.header().major_version
    }

    /// Format minor version (set to 0).
    pub fn minor_version(&self) -> u8 {
        self.data.header().minor_version
    }

    /// Header size (bytes).
    pub fn header_size(&self) -> u8 {
        self.data.header().header_size
    }

    /// Length of Top DICT structure in bytes.
    pub fn top_dict_length(&self) -> u16 {
        self.data.header().top_dict_length.get()
    }

    /// Padding bytes before the start of the Top DICT.
    pub fn _padding(&self) -> &'a [u8] {
        let range = self._padding_byte_range();
        self.offset_data()
            .read_array(range)
            .ok()
            .unwrap_or_default()
    }

    /// Data containing the Top DICT.
    pub fn top_dict_data(&self) -> &'a [u8] {
        let range = self.top_dict_data_byte_range();
        self.offset_data()
            .read_array(range)
            .ok()
            .unwrap_or_default()
    }

    /// Remaining table data.
    pub fn trailing_data(&self) -> &'a [u8] {
        let range = self.trailing_data_byte_range();
        self.offset_data()
            .read_array(range)
            .ok()
            .unwrap_or_default()
    }

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

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

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

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

    pub fn _padding_byte_range(&self) -> Range<usize> {
        let header_size = self.header_size();
        let start = self.top_dict_length_byte_range().end;
        let end =
            start + (transforms::subtract(header_size, 5_usize)).saturating_mul(u8::RAW_BYTE_LEN);
        start..end
    }

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

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

const _: () = assert!(FontData::default_data_long_enough(Cff2Header::MIN_SIZE));

impl Default for Cff2Header<'_> {
    fn default() -> Self {
        Self {
            data: TableDataRef::new(FontData::default_table_data().as_bytes())
                .unwrap_or_else(|| unreachable!("the default data covers MIN_SIZE")),
        }
    }
}

impl<'a> MinByteRange<'a> for Index<'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.offset_data().as_bytes().get(range).unwrap_or_default()
    }
}

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

impl<'a> FontRead<'a> for Index<'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 IndexFixedHeader {
    pub count: BigEndian<u32>,
    pub off_size: u8,
}

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

/// An array of variable-sized objects in a `CFF2` table.
#[derive(Clone)]
pub struct Index<'a> {
    data: TableDataRef<'a, IndexFixedHeader>,
}

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

    /// Number of objects stored in INDEX.
    pub fn count(&self) -> u32 {
        self.data.header().count.get()
    }

    /// Object array element size.
    pub fn off_size(&self) -> u8 {
        self.data.header().off_size
    }

    /// Bytes containing `count + 1` offsets each of `off_size`.
    pub fn offsets(&self) -> &'a [u8] {
        let range = self.offsets_byte_range();
        self.offset_data()
            .read_array(range)
            .ok()
            .unwrap_or_default()
    }

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

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

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

    pub fn offsets_byte_range(&self) -> Range<usize> {
        let count = self.count();
        let off_size = self.off_size();
        let start = self.off_size_byte_range().end;
        let end = start
            + (transforms::add_multiply(count, 1_usize, off_size)).saturating_mul(u8::RAW_BYTE_LEN);
        start..end
    }

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

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

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