// 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 Hvar<'a> {

    fn min_byte_range(&self) -> Range<usize> {

        0..self.rsb_mapping_offset_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 TopLevelTable for Hvar<'_> {

    /// `HVAR`

    const TAG: Tag = Tag::new(b"HVAR");

}

impl ReadArgs for Hvar<'_> {

    type Args = ();

}

impl<'a> FontRead<'a> for Hvar<'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 HvarFixedHeader {

    pub version: BigEndian<MajorMinor>,

    pub item_variation_store_offset: BigEndian<Offset32>,

    pub advance_width_mapping_offset: BigEndian<Nullable<Offset32>>,

    pub lsb_mapping_offset: BigEndian<Nullable<Offset32>>,

    pub rsb_mapping_offset: BigEndian<Nullable<Offset32>>,

}

#[allow(clippy::absurd_extreme_comparisons)]

const _: () = assert!(std::mem::size_of::<HvarFixedHeader>() <= Hvar::MIN_SIZE);

/// The [HVAR (Horizontal Metrics Variations)](https://docs.microsoft.com/en-us/typography/opentype/spec/hvar) table

#[derive(Clone)]

pub struct Hvar<'a> {

    data: TableDataRef<'a, HvarFixedHeader>,

}

#[allow(clippy::needless_lifetimes)]

impl<'a> Hvar<'a> {

    pub const MIN_SIZE: usize = (MajorMinor::RAW_BYTE_LEN

        + Offset32::RAW_BYTE_LEN

        + Offset32::RAW_BYTE_LEN

        + Offset32::RAW_BYTE_LEN

        + Offset32::RAW_BYTE_LEN);

    basic_table_impls!(impl_the_methods);

    /// Major version number of the horizontal metrics variations table — set to 1.

    /// Minor version number of the horizontal metrics variations table — set to 0.

    pub fn version(&self) -> MajorMinor {

        self.data.header().version.get()

    }

    /// Offset in bytes from the start of this table to the item variation store table.

    pub fn item_variation_store_offset(&self) -> Offset32 {

        self.data.header().item_variation_store_offset.get()

    }

    /// Attempt to resolve [`item_variation_store_offset`][Self::item_variation_store_offset].

    pub fn item_variation_store(&self) -> Result<ItemVariationStore<'a>, ReadError> {

        let data = self.offset_data();

        self.item_variation_store_offset().resolve(data)

    }

    /// Offset in bytes from the start of this table to the delta-set index mapping for advance widths (may be NULL).

    pub fn advance_width_mapping_offset(&self) -> Nullable<Offset32> {

        self.data.header().advance_width_mapping_offset.get()

    }

    /// Attempt to resolve [`advance_width_mapping_offset`][Self::advance_width_mapping_offset].

    pub fn advance_width_mapping(&self) -> Option<Result<DeltaSetIndexMap<'a>, ReadError>> {

        let data = self.offset_data();

        self.advance_width_mapping_offset().resolve(data)

    }

    /// Offset in bytes from the start of this table to the delta-set index mapping for left side bearings (may be NULL).

    pub fn lsb_mapping_offset(&self) -> Nullable<Offset32> {

        self.data.header().lsb_mapping_offset.get()

    }

    /// Attempt to resolve [`lsb_mapping_offset`][Self::lsb_mapping_offset].

    pub fn lsb_mapping(&self) -> Option<Result<DeltaSetIndexMap<'a>, ReadError>> {

        let data = self.offset_data();

        self.lsb_mapping_offset().resolve(data)

    }

    /// Offset in bytes from the start of this table to the delta-set index mapping for right side bearings (may be NULL).

    pub fn rsb_mapping_offset(&self) -> Nullable<Offset32> {

        self.data.header().rsb_mapping_offset.get()

    }

    /// Attempt to resolve [`rsb_mapping_offset`][Self::rsb_mapping_offset].

    pub fn rsb_mapping(&self) -> Option<Result<DeltaSetIndexMap<'a>, ReadError>> {

        let data = self.offset_data();

        self.rsb_mapping_offset().resolve(data)

    }

    pub fn version_byte_range(&self) -> Range<usize> {

        let start = 0;

        let end = start + MajorMinor::RAW_BYTE_LEN;

        start..end

    }

    pub fn item_variation_store_offset_byte_range(&self) -> Range<usize> {

        let start = self.version_byte_range().end;

        let end = start + Offset32::RAW_BYTE_LEN;

        start..end

    }

    pub fn advance_width_mapping_offset_byte_range(&self) -> Range<usize> {

        let start = self.item_variation_store_offset_byte_range().end;

        let end = start + Offset32::RAW_BYTE_LEN;

        start..end

    }

    pub fn lsb_mapping_offset_byte_range(&self) -> Range<usize> {

        let start = self.advance_width_mapping_offset_byte_range().end;

        let end = start + Offset32::RAW_BYTE_LEN;

        start..end

    }

    pub fn rsb_mapping_offset_byte_range(&self) -> Range<usize> {

        let start = self.lsb_mapping_offset_byte_range().end;

        let end = start + Offset32::RAW_BYTE_LEN;

        start..end

    }

}

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

impl Default for Hvar<'_> {

    fn default() -> Self {

        Self {

            data: TableDataRef::new(FontData::default_table_data().as_bytes())

                .unwrap_or_else(|| unreachable!("the default data covers MIN_SIZE")),

        }

    }

}