// 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::*;

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

#[derive(Debug, Clone, Copy)]

#[doc(hidden)]

pub struct HdmxMarker {

    num_glyphs: u16,

    records_byte_len: usize,

}

impl HdmxMarker {

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

        let start = 0;

        start..start + u16::RAW_BYTE_LEN

    }

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

        let start = self.version_byte_range().end;

        start..start + u16::RAW_BYTE_LEN

    }

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

        let start = self.num_records_byte_range().end;

        start..start + u32::RAW_BYTE_LEN

    }

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

        let start = self.size_device_record_byte_range().end;

        start..start + self.records_byte_len

    }

}

impl MinByteRange for HdmxMarker {

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

        0..self.records_byte_range().end

    }

}

impl TopLevelTable for Hdmx<'_> {

    /// `hdmx`

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

}

impl ReadArgs for Hdmx<'_> {

    type Args = u16;

}

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

    fn read_with_args(data: FontData<'a>, args: &u16) -> Result<Self, ReadError> {

        let num_glyphs = *args;

        let mut cursor = data.cursor();

        cursor.advance::<u16>();

        let num_records: u16 = cursor.read()?;

        let size_device_record: u32 = cursor.read()?;

        let records_byte_len = (num_records as usize)

            .checked_mul(<DeviceRecord as ComputeSize>::compute_size(&(

                num_glyphs,

                size_device_record,

            ))?)

            .ok_or(ReadError::OutOfBounds)?;

        cursor.advance_by(records_byte_len);

        cursor.finish(HdmxMarker {

            num_glyphs,

            records_byte_len,

        })

    }

}

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: u16) -> Result<Self, ReadError> {

        let args = num_glyphs;

        Self::read_with_args(data, &args)

    }

}

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

pub type Hdmx<'a> = TableRef<'a, HdmxMarker>;

#[allow(clippy::needless_lifetimes)]

impl<'a> Hdmx<'a> {

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

    pub fn version(&self) -> u16 {

        let range = self.shape.version_byte_range();

        self.data.read_at(range.start).unwrap()

    }

    /// Number of device records.

    pub fn num_records(&self) -> u16 {

        let range = self.shape.num_records_byte_range();

        self.data.read_at(range.start).unwrap()

    }

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

    pub fn size_device_record(&self) -> u32 {

        let range = self.shape.size_device_record_byte_range();

        self.data.read_at(range.start).unwrap()

    }

    /// Array of device records.

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

        let range = self.shape.records_byte_range();

        self.data

            .read_with_args(range, &(self.num_glyphs(), self.size_device_record()))

            .unwrap()

    }

    pub(crate) fn num_glyphs(&self) -> u16 {

        self.shape.num_glyphs

    }

}

#[cfg(feature = "experimental_traverse")]

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

    fn type_name(&self) -> &str {

        "Hdmx"

    }

    fn get_field(&self, idx: usize) -> Option<Field<'a>> {

        match idx {

            0usize => Some(Field::new("version", self.version())),

            1usize => Some(Field::new("num_records", self.num_records())),

            2usize => Some(Field::new("size_device_record", self.size_device_record())),

            3usize => Some(Field::new(

                "records",

                traversal::FieldType::computed_array(

                    "DeviceRecord",

                    self.records(),

                    self.offset_data(),

                ),

            )),

            _ => None,

        }

    }

}

#[cfg(feature = "experimental_traverse")]

#[allow(clippy::needless_lifetimes)]

impl<'a> std::fmt::Debug for Hdmx<'a> {

    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {

        (self as &dyn SomeTable<'a>).fmt(f)

    }

}