151 lines
4.5 KiB
Rust
151 lines
4.5 KiB
Rust
// THIS FILE IS AUTOGENERATED.
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// Any changes to this file will be overwritten.
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// For more information about how codegen works, see font-codegen/README.md
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#[allow(unused_imports)]
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use crate::codegen_prelude::*;
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/// The [Horizontal Device Metrics](https://learn.microsoft.com/en-us/typography/opentype/spec/hdmx) table.
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#[derive(Debug, Clone, Copy)]
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#[doc(hidden)]
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pub struct HdmxMarker {
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num_glyphs: u16,
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records_byte_len: usize,
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}
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impl HdmxMarker {
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pub fn version_byte_range(&self) -> Range<usize> {
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let start = 0;
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start..start + u16::RAW_BYTE_LEN
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}
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pub fn num_records_byte_range(&self) -> Range<usize> {
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let start = self.version_byte_range().end;
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start..start + u16::RAW_BYTE_LEN
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}
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pub fn size_device_record_byte_range(&self) -> Range<usize> {
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let start = self.num_records_byte_range().end;
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start..start + u32::RAW_BYTE_LEN
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}
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pub fn records_byte_range(&self) -> Range<usize> {
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let start = self.size_device_record_byte_range().end;
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start..start + self.records_byte_len
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}
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}
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impl MinByteRange for HdmxMarker {
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fn min_byte_range(&self) -> Range<usize> {
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0..self.records_byte_range().end
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}
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}
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impl TopLevelTable for Hdmx<'_> {
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/// `hdmx`
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const TAG: Tag = Tag::new(b"hdmx");
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}
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impl ReadArgs for Hdmx<'_> {
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type Args = u16;
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}
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impl<'a> FontReadWithArgs<'a> for Hdmx<'a> {
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fn read_with_args(data: FontData<'a>, args: &u16) -> Result<Self, ReadError> {
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let num_glyphs = *args;
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let mut cursor = data.cursor();
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cursor.advance::<u16>();
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let num_records: u16 = cursor.read()?;
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let size_device_record: u32 = cursor.read()?;
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let records_byte_len = (num_records as usize)
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.checked_mul(<DeviceRecord as ComputeSize>::compute_size(&(
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num_glyphs,
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size_device_record,
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))?)
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.ok_or(ReadError::OutOfBounds)?;
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cursor.advance_by(records_byte_len);
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cursor.finish(HdmxMarker {
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num_glyphs,
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records_byte_len,
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})
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}
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}
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impl<'a> Hdmx<'a> {
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/// A constructor that requires additional arguments.
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///
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/// This type requires some external state in order to be
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/// parsed.
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pub fn read(data: FontData<'a>, num_glyphs: u16) -> Result<Self, ReadError> {
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let args = num_glyphs;
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Self::read_with_args(data, &args)
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}
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}
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/// The [Horizontal Device Metrics](https://learn.microsoft.com/en-us/typography/opentype/spec/hdmx) table.
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pub type Hdmx<'a> = TableRef<'a, HdmxMarker>;
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#[allow(clippy::needless_lifetimes)]
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impl<'a> Hdmx<'a> {
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/// Table version number (set to 0).
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pub fn version(&self) -> u16 {
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let range = self.shape.version_byte_range();
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self.data.read_at(range.start).unwrap()
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}
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/// Number of device records.
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pub fn num_records(&self) -> u16 {
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let range = self.shape.num_records_byte_range();
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self.data.read_at(range.start).unwrap()
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}
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/// Size of device record, 32-bit aligned.
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pub fn size_device_record(&self) -> u32 {
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let range = self.shape.size_device_record_byte_range();
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self.data.read_at(range.start).unwrap()
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}
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/// Array of device records.
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pub fn records(&self) -> ComputedArray<'a, DeviceRecord<'a>> {
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let range = self.shape.records_byte_range();
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self.data
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.read_with_args(range, &(self.num_glyphs(), self.size_device_record()))
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.unwrap()
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}
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pub(crate) fn num_glyphs(&self) -> u16 {
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self.shape.num_glyphs
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}
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}
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#[cfg(feature = "experimental_traverse")]
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impl<'a> SomeTable<'a> for Hdmx<'a> {
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fn type_name(&self) -> &str {
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"Hdmx"
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}
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fn get_field(&self, idx: usize) -> Option<Field<'a>> {
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match idx {
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0usize => Some(Field::new("version", self.version())),
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1usize => Some(Field::new("num_records", self.num_records())),
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2usize => Some(Field::new("size_device_record", self.size_device_record())),
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3usize => Some(Field::new(
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"records",
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traversal::FieldType::computed_array(
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"DeviceRecord",
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self.records(),
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self.offset_data(),
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),
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)),
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_ => None,
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}
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}
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}
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#[cfg(feature = "experimental_traverse")]
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#[allow(clippy::needless_lifetimes)]
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impl<'a> std::fmt::Debug for Hdmx<'a> {
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fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
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(self as &dyn SomeTable<'a>).fmt(f)
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}
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}
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