// 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 Avar<'a> {

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

        0..self.axis_segment_maps_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 Avar<'_> {

    /// `avar`

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

}

impl ReadArgs for Avar<'_> {

    type Args = ();

}

impl<'a> FontRead<'a> for Avar<'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 AvarFixedHeader {

    pub version: BigEndian<MajorMinor>,

    pub _reserved: BigEndian<u16>,

    pub axis_count: BigEndian<u16>,

}

#[allow(clippy::absurd_extreme_comparisons)]

const _: () = assert!(std::mem::size_of::<AvarFixedHeader>() <= Avar::MIN_SIZE);

/// The [avar (Axis Variations)](https://docs.microsoft.com/en-us/typography/opentype/spec/avar) table

#[derive(Clone)]

pub struct Avar<'a> {

    data: TableDataRef<'a, AvarFixedHeader>,

}

#[allow(clippy::needless_lifetimes)]

impl<'a> Avar<'a> {

    pub const MIN_SIZE: usize = (MajorMinor::RAW_BYTE_LEN + u16::RAW_BYTE_LEN + u16::RAW_BYTE_LEN);

    basic_table_impls!(impl_the_methods);

    /// Major version number of the axis variations table — set to 1 or 2.

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

    pub fn version(&self) -> MajorMinor {

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

    }

    /// The number of variation axes for this font. This must be the same number as axisCount in the 'fvar' table.

    pub fn axis_count(&self) -> u16 {

        self.data.header().axis_count.get()

    }

    /// The segment maps array — one segment map for each axis, in the order of axes specified in the 'fvar' table.

    pub fn axis_segment_maps(&self) -> VarLenArray<'a, SegmentMaps<'a>> {

        let range = self.axis_segment_maps_byte_range();

        self.offset_data()

            .split_off(range.start)

            .and_then(|d| VarLenArray::read(d).ok())

            .unwrap_or_default()

    }

    /// Offset to DeltaSetIndexMap table (may be NULL).

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

        let range = self.axis_index_map_offset_byte_range();

        (!range.is_empty())

            .then(|| self.offset_data().read_at(range.start).ok())

            .flatten()

    }

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

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

        let data = self.offset_data();

        self.axis_index_map_offset().map(|x| x.resolve(data))?

    }

    /// Offset to ItemVariationStore (may be NULL).

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

        let range = self.var_store_offset_byte_range();

        (!range.is_empty())

            .then(|| self.offset_data().read_at(range.start).ok())

            .flatten()

    }

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

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

        let data = self.offset_data();

        self.var_store_offset().map(|x| x.resolve(data))?

    }

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

        let start = 0;

        let end = start + MajorMinor::RAW_BYTE_LEN;

        start..end

    }

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

        let start = self.version_byte_range().end;

        let end = start + u16::RAW_BYTE_LEN;

        start..end

    }

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

        let start = self._reserved_byte_range().end;

        let end = start + u16::RAW_BYTE_LEN;

        start..end

    }

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

        let axis_count = self.axis_count();

        let start = self.axis_count_byte_range().end;

        let end = start + {

            let data = self.offset_data().split_off(start).unwrap_or_default();

            <SegmentMaps as VarSize>::total_len_for_count(data, transforms::to_usize(axis_count))

                .unwrap_or(0)

        };

        start..end

    }

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

        let start = self.axis_segment_maps_byte_range().end;

        let end = if self.version().compatible((2u16, 0u16)) {

            start + Offset32::RAW_BYTE_LEN

        } else {

            start

        };

        start..end

    }

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

        let start = self.axis_index_map_offset_byte_range().end;

        let end = if self.version().compatible((2u16, 0u16)) {

            start + Offset32::RAW_BYTE_LEN

        } else {

            start

        };

        start..end

    }

}

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

impl Default for Avar<'_> {

    fn default() -> Self {

        Self {

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

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

        }

    }

}

/// [SegmentMaps](https://learn.microsoft.com/en-us/typography/opentype/spec/avar#table-formats) record

#[derive(Clone, Debug, PartialEq, Eq, PartialOrd, Ord, Hash)]

pub struct SegmentMaps<'a> {

    /// The number of correspondence pairs for this axis.

    pub position_map_count: BigEndian<u16>,

    /// The array of axis value map records for this axis.

    pub axis_value_maps: &'a [AxisValueMap],

}

impl<'a> SegmentMaps<'a> {

    /// The number of correspondence pairs for this axis.

    pub fn position_map_count(&self) -> u16 {

        self.position_map_count.get()

    }

    /// The array of axis value map records for this axis.

    pub fn axis_value_maps(&self) -> &'a [AxisValueMap] {

        self.axis_value_maps

    }

}

/// [AxisValueMap](https://learn.microsoft.com/en-us/typography/opentype/spec/avar#table-formats) record

#[derive(Clone, Debug, PartialEq, Eq, PartialOrd, Ord, Hash, Copy, bytemuck :: AnyBitPattern)]

#[repr(C)]

#[repr(packed)]

pub struct AxisValueMap {

    /// A normalized coordinate value obtained using default normalization.

    pub from_coordinate: BigEndian<F2Dot14>,

    /// The modified, normalized coordinate value.

    pub to_coordinate: BigEndian<F2Dot14>,

}

impl AxisValueMap {

    /// A normalized coordinate value obtained using default normalization.

    pub fn from_coordinate(&self) -> F2Dot14 {

        self.from_coordinate.get()

    }

    /// The modified, normalized coordinate value.

    pub fn to_coordinate(&self) -> F2Dot14 {

        self.to_coordinate.get()

    }

}

impl FixedSize for AxisValueMap {

    const RAW_BYTE_LEN: usize = F2Dot14::RAW_BYTE_LEN + F2Dot14::RAW_BYTE_LEN;

}