// 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 Hdmx<'a> {

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

        0..self.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 TopLevelTable for Hdmx<'_> {

    /// `hdmx`

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

}

impl ReadArgs for Hdmx<'_> {

    type Args = u32;

}

impl<'a> FontRead<'a> for Hdmx<'a> {

    fn read_with_args(data: FontData<'a>, args: u32) -> Result<Self, ReadError> {

        let num_glyphs = 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, num_glyphs })

    }

}

impl<'a> Hdmx<'a> {

    /// A constructor that requires additional arguments.

    ///

    /// This type requires some external state in order to be

    /// parsed.

    pub fn read(data: FontData<'a>, num_glyphs: u32) -> Result<Self, ReadError> {

        let args = num_glyphs;

        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 HdmxFixedHeader {

    pub version: BigEndian<u16>,

    pub num_records: BigEndian<u16>,

    pub size_device_record: BigEndian<u32>,

}

#[allow(clippy::absurd_extreme_comparisons)]

const _: () = assert!(std::mem::size_of::<HdmxFixedHeader>() <= Hdmx::MIN_SIZE);

/// The [Horizontal Device Metrics](https://learn.microsoft.com/en-us/typography/opentype/spec/hdmx) table.

#[derive(Clone)]

pub struct Hdmx<'a> {

    data: TableDataRef<'a, HdmxFixedHeader>,

    num_glyphs: u32,

}

#[allow(clippy::needless_lifetimes)]

impl<'a> Hdmx<'a> {

    pub const MIN_SIZE: usize = (u16::RAW_BYTE_LEN + u16::RAW_BYTE_LEN + u32::RAW_BYTE_LEN);

    basic_table_impls!(impl_the_methods);

    /// Table version number (set to 0).

    pub fn version(&self) -> u16 {

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

    }

    /// Number of device records.

    pub fn num_records(&self) -> u16 {

        self.data.header().num_records.get()

    }

    /// Size of device record, 32-bit aligned.

    pub fn size_device_record(&self) -> u32 {

        self.data.header().size_device_record.get()

    }

    /// Array of device records.

    pub fn records(&self) -> ComputedArray<'a, DeviceRecord<'a>> {

        let range = self.records_byte_range();

        ComputedArray::new(

            self.offset_data(),

            range,

            (self.num_glyphs(), self.size_device_record()),

        )

        .unwrap_or_default()

    }

    pub(crate) fn num_glyphs(&self) -> u32 {

        self.num_glyphs

    }

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

        let start = 0;

        let end = start + u16::RAW_BYTE_LEN;

        start..end

    }

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

        let start = self.version_byte_range().end;

        let end = start + u16::RAW_BYTE_LEN;

        start..end

    }

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

        let start = self.num_records_byte_range().end;

        let end = start + u32::RAW_BYTE_LEN;

        start..end

    }

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

        let num_records = self.num_records();

        let start = self.size_device_record_byte_range().end;

        let end = start

            + (transforms::to_usize(num_records)).saturating_mul(

                <DeviceRecord as ComputeSize>::compute_size((

                    self.num_glyphs(),

                    self.size_device_record(),

                ))

                .unwrap_or(0),

            );

        start..end

    }

}

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

impl Default for Hdmx<'_> {

    fn default() -> Self {

        Self {

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

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

            num_glyphs: Default::default(),

        }

    }

}