130 lines
4.3 KiB
Rust
130 lines
4.3 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 [cvar](https://learn.microsoft.com/en-us/typography/opentype/spec/cvar) table.
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#[derive(Debug, Clone, Copy)]
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#[doc(hidden)]
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pub struct CvarMarker {
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tuple_variation_headers_byte_len: usize,
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}
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impl CvarMarker {
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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 + MajorMinor::RAW_BYTE_LEN
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}
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pub fn tuple_variation_count_byte_range(&self) -> Range<usize> {
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let start = self.version_byte_range().end;
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start..start + TupleVariationCount::RAW_BYTE_LEN
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}
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pub fn data_offset_byte_range(&self) -> Range<usize> {
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let start = self.tuple_variation_count_byte_range().end;
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start..start + Offset16::RAW_BYTE_LEN
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}
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pub fn tuple_variation_headers_byte_range(&self) -> Range<usize> {
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let start = self.data_offset_byte_range().end;
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start..start + self.tuple_variation_headers_byte_len
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}
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}
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impl MinByteRange for CvarMarker {
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fn min_byte_range(&self) -> Range<usize> {
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0..self.tuple_variation_headers_byte_range().end
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}
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}
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impl TopLevelTable for Cvar<'_> {
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/// `cvar`
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const TAG: Tag = Tag::new(b"cvar");
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}
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impl<'a> FontRead<'a> for Cvar<'a> {
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fn read(data: FontData<'a>) -> Result<Self, ReadError> {
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let mut cursor = data.cursor();
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cursor.advance::<MajorMinor>();
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cursor.advance::<TupleVariationCount>();
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cursor.advance::<Offset16>();
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let tuple_variation_headers_byte_len = cursor.remaining_bytes();
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cursor.advance_by(tuple_variation_headers_byte_len);
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cursor.finish(CvarMarker {
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tuple_variation_headers_byte_len,
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})
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}
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}
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/// The [cvar](https://learn.microsoft.com/en-us/typography/opentype/spec/cvar) table.
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pub type Cvar<'a> = TableRef<'a, CvarMarker>;
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#[allow(clippy::needless_lifetimes)]
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impl<'a> Cvar<'a> {
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/// Major/minor version number of the CVT variations table — set to (1,0).
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pub fn version(&self) -> MajorMinor {
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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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/// A packed field. The high 4 bits are flags, and the low 12 bits
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/// are the number of tuple variation tables for this glyph. The
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/// number of tuple variation tables can be any number between 1
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/// and 4095.
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pub fn tuple_variation_count(&self) -> TupleVariationCount {
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let range = self.shape.tuple_variation_count_byte_range();
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self.data.read_at(range.start).unwrap()
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}
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/// Offset from the start of the 'cvar' table to the serialized data.
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pub fn data_offset(&self) -> Offset16 {
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let range = self.shape.data_offset_byte_range();
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self.data.read_at(range.start).unwrap()
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}
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/// Attempt to resolve [`data_offset`][Self::data_offset].
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pub fn data(&self) -> Result<FontData<'a>, ReadError> {
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let data = self.data;
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self.data_offset().resolve(data)
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}
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/// Array of tuple variation headers.
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pub fn tuple_variation_headers(&self) -> VarLenArray<'a, TupleVariationHeader> {
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let range = self.shape.tuple_variation_headers_byte_range();
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VarLenArray::read(self.data.split_off(range.start).unwrap()).unwrap()
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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 Cvar<'a> {
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fn type_name(&self) -> &str {
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"Cvar"
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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(
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"tuple_variation_count",
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traversal::FieldType::Unknown,
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)),
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2usize => Some(Field::new("data_offset", traversal::FieldType::Unknown)),
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3usize => Some(Field::new(
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"tuple_variation_headers",
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traversal::FieldType::Unknown,
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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 Cvar<'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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