698 lines
21 KiB
Rust
698 lines
21 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 ['gvar' header](https://learn.microsoft.com/en-us/typography/opentype/spec/gvar#gvar-header)
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#[derive(Debug, Clone, Copy)]
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#[doc(hidden)]
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pub struct GvarMarker {
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glyph_variation_data_offsets_byte_len: usize,
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}
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impl GvarMarker {
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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 axis_count_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 shared_tuple_count_byte_range(&self) -> Range<usize> {
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let start = self.axis_count_byte_range().end;
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start..start + u16::RAW_BYTE_LEN
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}
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pub fn shared_tuples_offset_byte_range(&self) -> Range<usize> {
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let start = self.shared_tuple_count_byte_range().end;
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start..start + Offset32::RAW_BYTE_LEN
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}
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pub fn glyph_count_byte_range(&self) -> Range<usize> {
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let start = self.shared_tuples_offset_byte_range().end;
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start..start + u16::RAW_BYTE_LEN
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}
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pub fn flags_byte_range(&self) -> Range<usize> {
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let start = self.glyph_count_byte_range().end;
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start..start + GvarFlags::RAW_BYTE_LEN
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}
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pub fn glyph_variation_data_array_offset_byte_range(&self) -> Range<usize> {
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let start = self.flags_byte_range().end;
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start..start + u32::RAW_BYTE_LEN
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}
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pub fn glyph_variation_data_offsets_byte_range(&self) -> Range<usize> {
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let start = self.glyph_variation_data_array_offset_byte_range().end;
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start..start + self.glyph_variation_data_offsets_byte_len
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}
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}
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impl MinByteRange for GvarMarker {
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fn min_byte_range(&self) -> Range<usize> {
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0..self.glyph_variation_data_offsets_byte_range().end
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}
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}
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impl TopLevelTable for Gvar<'_> {
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/// `gvar`
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const TAG: Tag = Tag::new(b"gvar");
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}
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impl<'a> FontRead<'a> for Gvar<'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::<u16>();
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cursor.advance::<u16>();
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cursor.advance::<Offset32>();
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let glyph_count: u16 = cursor.read()?;
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let flags: GvarFlags = cursor.read()?;
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cursor.advance::<u32>();
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let glyph_variation_data_offsets_byte_len = (transforms::add(glyph_count, 1_usize))
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.checked_mul(<U16Or32 as ComputeSize>::compute_size(&flags)?)
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.ok_or(ReadError::OutOfBounds)?;
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cursor.advance_by(glyph_variation_data_offsets_byte_len);
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cursor.finish(GvarMarker {
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glyph_variation_data_offsets_byte_len,
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})
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}
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}
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/// The ['gvar' header](https://learn.microsoft.com/en-us/typography/opentype/spec/gvar#gvar-header)
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pub type Gvar<'a> = TableRef<'a, GvarMarker>;
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#[allow(clippy::needless_lifetimes)]
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impl<'a> Gvar<'a> {
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/// Major/minor version number of the glyph 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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/// The number of variation axes for this font. This must be the
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/// same number as axisCount in the 'fvar' table.
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pub fn axis_count(&self) -> u16 {
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let range = self.shape.axis_count_byte_range();
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self.data.read_at(range.start).unwrap()
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}
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/// The number of shared tuple records. Shared tuple records can be
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/// referenced within glyph variation data tables for multiple
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/// glyphs, as opposed to other tuple records stored directly
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/// within a glyph variation data table.
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pub fn shared_tuple_count(&self) -> u16 {
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let range = self.shape.shared_tuple_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 this table to the shared tuple records.
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pub fn shared_tuples_offset(&self) -> Offset32 {
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let range = self.shape.shared_tuples_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 [`shared_tuples_offset`][Self::shared_tuples_offset].
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pub fn shared_tuples(&self) -> Result<SharedTuples<'a>, ReadError> {
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let data = self.data;
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let args = (self.shared_tuple_count(), self.axis_count());
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self.shared_tuples_offset().resolve_with_args(data, &args)
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}
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/// The number of glyphs in this font. This must match the number
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/// of glyphs stored elsewhere in the font.
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pub fn glyph_count(&self) -> u16 {
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let range = self.shape.glyph_count_byte_range();
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self.data.read_at(range.start).unwrap()
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}
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/// Bit-field that gives the format of the offset array that
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/// follows. If bit 0 is clear, the offsets are uint16; if bit 0 is
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/// set, the offsets are uint32.
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pub fn flags(&self) -> GvarFlags {
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let range = self.shape.flags_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 this table to the array of
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/// GlyphVariationData tables.
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pub fn glyph_variation_data_array_offset(&self) -> u32 {
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let range = self.shape.glyph_variation_data_array_offset_byte_range();
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self.data.read_at(range.start).unwrap()
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}
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/// Offsets from the start of the GlyphVariationData array to each
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/// GlyphVariationData table.
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pub fn glyph_variation_data_offsets(&self) -> ComputedArray<'a, U16Or32> {
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let range = self.shape.glyph_variation_data_offsets_byte_range();
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self.data.read_with_args(range, &self.flags()).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 Gvar<'a> {
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fn type_name(&self) -> &str {
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"Gvar"
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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("axis_count", self.axis_count())),
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2usize => Some(Field::new("shared_tuple_count", self.shared_tuple_count())),
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3usize => Some(Field::new(
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"shared_tuples_offset",
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FieldType::offset(self.shared_tuples_offset(), self.shared_tuples()),
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)),
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4usize => Some(Field::new("glyph_count", self.glyph_count())),
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5usize => Some(Field::new("flags", self.flags())),
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6usize => Some(Field::new(
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"glyph_variation_data_array_offset",
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self.glyph_variation_data_array_offset(),
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)),
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7usize => Some(Field::new(
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"glyph_variation_data_offsets",
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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 Gvar<'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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#[derive(Clone, Copy, Default, PartialEq, Eq, PartialOrd, Ord, Hash, bytemuck :: AnyBitPattern)]
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#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
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#[repr(transparent)]
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pub struct GvarFlags {
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bits: u16,
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}
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impl GvarFlags {
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/// If set, offsets to GlyphVariationData are 32 bits
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pub const LONG_OFFSETS: Self = Self { bits: 1 };
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}
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impl GvarFlags {
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/// Returns an empty set of flags.
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#[inline]
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pub const fn empty() -> Self {
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Self { bits: 0 }
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}
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/// Returns the set containing all flags.
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#[inline]
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pub const fn all() -> Self {
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Self {
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bits: Self::LONG_OFFSETS.bits,
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}
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}
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/// Returns the raw value of the flags currently stored.
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#[inline]
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pub const fn bits(&self) -> u16 {
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self.bits
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}
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/// Convert from underlying bit representation, unless that
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/// representation contains bits that do not correspond to a flag.
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#[inline]
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pub const fn from_bits(bits: u16) -> Option<Self> {
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if (bits & !Self::all().bits()) == 0 {
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Some(Self { bits })
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} else {
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None
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}
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}
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/// Convert from underlying bit representation, dropping any bits
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/// that do not correspond to flags.
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#[inline]
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pub const fn from_bits_truncate(bits: u16) -> Self {
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Self {
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bits: bits & Self::all().bits,
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}
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}
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/// Returns `true` if no flags are currently stored.
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#[inline]
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pub const fn is_empty(&self) -> bool {
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self.bits() == Self::empty().bits()
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}
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/// Returns `true` if there are flags common to both `self` and `other`.
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#[inline]
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pub const fn intersects(&self, other: Self) -> bool {
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!(Self {
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bits: self.bits & other.bits,
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})
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.is_empty()
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}
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/// Returns `true` if all of the flags in `other` are contained within `self`.
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#[inline]
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pub const fn contains(&self, other: Self) -> bool {
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(self.bits & other.bits) == other.bits
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}
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/// Inserts the specified flags in-place.
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#[inline]
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pub fn insert(&mut self, other: Self) {
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self.bits |= other.bits;
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}
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/// Removes the specified flags in-place.
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#[inline]
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pub fn remove(&mut self, other: Self) {
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self.bits &= !other.bits;
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}
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/// Toggles the specified flags in-place.
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#[inline]
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pub fn toggle(&mut self, other: Self) {
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self.bits ^= other.bits;
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}
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/// Returns the intersection between the flags in `self` and
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/// `other`.
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///
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/// Specifically, the returned set contains only the flags which are
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/// present in *both* `self` *and* `other`.
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///
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/// This is equivalent to using the `&` operator (e.g.
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/// [`ops::BitAnd`]), as in `flags & other`.
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///
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/// [`ops::BitAnd`]: https://doc.rust-lang.org/std/ops/trait.BitAnd.html
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#[inline]
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#[must_use]
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pub const fn intersection(self, other: Self) -> Self {
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Self {
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bits: self.bits & other.bits,
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}
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}
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/// Returns the union of between the flags in `self` and `other`.
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///
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/// Specifically, the returned set contains all flags which are
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/// present in *either* `self` *or* `other`, including any which are
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/// present in both.
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///
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/// This is equivalent to using the `|` operator (e.g.
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/// [`ops::BitOr`]), as in `flags | other`.
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///
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/// [`ops::BitOr`]: https://doc.rust-lang.org/std/ops/trait.BitOr.html
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#[inline]
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#[must_use]
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pub const fn union(self, other: Self) -> Self {
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Self {
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bits: self.bits | other.bits,
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}
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}
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/// Returns the difference between the flags in `self` and `other`.
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///
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/// Specifically, the returned set contains all flags present in
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/// `self`, except for the ones present in `other`.
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///
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/// It is also conceptually equivalent to the "bit-clear" operation:
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/// `flags & !other` (and this syntax is also supported).
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///
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/// This is equivalent to using the `-` operator (e.g.
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/// [`ops::Sub`]), as in `flags - other`.
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///
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/// [`ops::Sub`]: https://doc.rust-lang.org/std/ops/trait.Sub.html
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#[inline]
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#[must_use]
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pub const fn difference(self, other: Self) -> Self {
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Self {
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bits: self.bits & !other.bits,
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}
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}
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}
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impl std::ops::BitOr for GvarFlags {
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type Output = Self;
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/// Returns the union of the two sets of flags.
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#[inline]
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fn bitor(self, other: GvarFlags) -> Self {
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Self {
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bits: self.bits | other.bits,
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}
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}
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}
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impl std::ops::BitOrAssign for GvarFlags {
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/// Adds the set of flags.
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#[inline]
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fn bitor_assign(&mut self, other: Self) {
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self.bits |= other.bits;
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}
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}
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impl std::ops::BitXor for GvarFlags {
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type Output = Self;
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/// Returns the left flags, but with all the right flags toggled.
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#[inline]
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fn bitxor(self, other: Self) -> Self {
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Self {
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bits: self.bits ^ other.bits,
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}
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}
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}
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impl std::ops::BitXorAssign for GvarFlags {
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/// Toggles the set of flags.
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#[inline]
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fn bitxor_assign(&mut self, other: Self) {
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self.bits ^= other.bits;
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}
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}
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impl std::ops::BitAnd for GvarFlags {
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type Output = Self;
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/// Returns the intersection between the two sets of flags.
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#[inline]
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fn bitand(self, other: Self) -> Self {
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Self {
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bits: self.bits & other.bits,
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}
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}
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}
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impl std::ops::BitAndAssign for GvarFlags {
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/// Disables all flags disabled in the set.
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#[inline]
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fn bitand_assign(&mut self, other: Self) {
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self.bits &= other.bits;
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}
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}
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impl std::ops::Sub for GvarFlags {
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type Output = Self;
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/// Returns the set difference of the two sets of flags.
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#[inline]
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fn sub(self, other: Self) -> Self {
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Self {
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bits: self.bits & !other.bits,
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}
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}
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}
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impl std::ops::SubAssign for GvarFlags {
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/// Disables all flags enabled in the set.
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#[inline]
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fn sub_assign(&mut self, other: Self) {
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self.bits &= !other.bits;
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}
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}
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impl std::ops::Not for GvarFlags {
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type Output = Self;
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/// Returns the complement of this set of flags.
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#[inline]
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fn not(self) -> Self {
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Self { bits: !self.bits } & Self::all()
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}
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}
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impl std::fmt::Debug for GvarFlags {
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fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
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let members: &[(&str, Self)] = &[("LONG_OFFSETS", Self::LONG_OFFSETS)];
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let mut first = true;
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for (name, value) in members {
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if self.contains(*value) {
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if !first {
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f.write_str(" | ")?;
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}
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first = false;
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f.write_str(name)?;
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}
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}
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if first {
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f.write_str("(empty)")?;
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}
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Ok(())
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}
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}
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impl std::fmt::Binary for GvarFlags {
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fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
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std::fmt::Binary::fmt(&self.bits, f)
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}
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}
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impl std::fmt::Octal for GvarFlags {
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fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
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std::fmt::Octal::fmt(&self.bits, f)
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}
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}
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impl std::fmt::LowerHex for GvarFlags {
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fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
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std::fmt::LowerHex::fmt(&self.bits, f)
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}
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}
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impl std::fmt::UpperHex for GvarFlags {
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fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
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std::fmt::UpperHex::fmt(&self.bits, f)
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}
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}
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impl font_types::Scalar for GvarFlags {
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type Raw = <u16 as font_types::Scalar>::Raw;
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fn to_raw(self) -> Self::Raw {
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self.bits().to_raw()
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}
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fn from_raw(raw: Self::Raw) -> Self {
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let t = <u16>::from_raw(raw);
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Self::from_bits_truncate(t)
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}
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}
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#[cfg(feature = "experimental_traverse")]
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impl<'a> From<GvarFlags> for FieldType<'a> {
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fn from(src: GvarFlags) -> FieldType<'a> {
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src.bits().into()
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}
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}
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/// Array of tuple records shared across all glyph variation data tables.
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#[derive(Debug, Clone, Copy)]
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#[doc(hidden)]
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pub struct SharedTuplesMarker {
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axis_count: u16,
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tuples_byte_len: usize,
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}
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impl SharedTuplesMarker {
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pub fn tuples_byte_range(&self) -> Range<usize> {
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let start = 0;
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start..start + self.tuples_byte_len
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}
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}
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impl MinByteRange for SharedTuplesMarker {
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fn min_byte_range(&self) -> Range<usize> {
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0..self.tuples_byte_range().end
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}
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}
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|
|
impl ReadArgs for SharedTuples<'_> {
|
|
type Args = (u16, u16);
|
|
}
|
|
|
|
impl<'a> FontReadWithArgs<'a> for SharedTuples<'a> {
|
|
fn read_with_args(data: FontData<'a>, args: &(u16, u16)) -> Result<Self, ReadError> {
|
|
let (shared_tuple_count, axis_count) = *args;
|
|
let mut cursor = data.cursor();
|
|
let tuples_byte_len = (shared_tuple_count as usize)
|
|
.checked_mul(<Tuple as ComputeSize>::compute_size(&axis_count)?)
|
|
.ok_or(ReadError::OutOfBounds)?;
|
|
cursor.advance_by(tuples_byte_len);
|
|
cursor.finish(SharedTuplesMarker {
|
|
axis_count,
|
|
tuples_byte_len,
|
|
})
|
|
}
|
|
}
|
|
|
|
impl<'a> SharedTuples<'a> {
|
|
/// A constructor that requires additional arguments.
|
|
///
|
|
/// This type requires some external state in order to be
|
|
/// parsed.
|
|
pub fn read(
|
|
data: FontData<'a>,
|
|
shared_tuple_count: u16,
|
|
axis_count: u16,
|
|
) -> Result<Self, ReadError> {
|
|
let args = (shared_tuple_count, axis_count);
|
|
Self::read_with_args(data, &args)
|
|
}
|
|
}
|
|
|
|
/// Array of tuple records shared across all glyph variation data tables.
|
|
pub type SharedTuples<'a> = TableRef<'a, SharedTuplesMarker>;
|
|
|
|
#[allow(clippy::needless_lifetimes)]
|
|
impl<'a> SharedTuples<'a> {
|
|
pub fn tuples(&self) -> ComputedArray<'a, Tuple<'a>> {
|
|
let range = self.shape.tuples_byte_range();
|
|
self.data.read_with_args(range, &self.axis_count()).unwrap()
|
|
}
|
|
|
|
pub(crate) fn axis_count(&self) -> u16 {
|
|
self.shape.axis_count
|
|
}
|
|
}
|
|
|
|
#[cfg(feature = "experimental_traverse")]
|
|
impl<'a> SomeTable<'a> for SharedTuples<'a> {
|
|
fn type_name(&self) -> &str {
|
|
"SharedTuples"
|
|
}
|
|
fn get_field(&self, idx: usize) -> Option<Field<'a>> {
|
|
match idx {
|
|
0usize => Some(Field::new(
|
|
"tuples",
|
|
traversal::FieldType::computed_array("Tuple", self.tuples(), self.offset_data()),
|
|
)),
|
|
_ => None,
|
|
}
|
|
}
|
|
}
|
|
|
|
#[cfg(feature = "experimental_traverse")]
|
|
#[allow(clippy::needless_lifetimes)]
|
|
impl<'a> std::fmt::Debug for SharedTuples<'a> {
|
|
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
|
|
(self as &dyn SomeTable<'a>).fmt(f)
|
|
}
|
|
}
|
|
|
|
/// The [GlyphVariationData](https://learn.microsoft.com/en-us/typography/opentype/spec/gvar#the-glyphvariationdata-table-array) table
|
|
#[derive(Debug, Clone, Copy)]
|
|
#[doc(hidden)]
|
|
pub struct GlyphVariationDataHeaderMarker {
|
|
tuple_variation_headers_byte_len: usize,
|
|
}
|
|
|
|
impl GlyphVariationDataHeaderMarker {
|
|
pub fn tuple_variation_count_byte_range(&self) -> Range<usize> {
|
|
let start = 0;
|
|
start..start + TupleVariationCount::RAW_BYTE_LEN
|
|
}
|
|
|
|
pub fn serialized_data_offset_byte_range(&self) -> Range<usize> {
|
|
let start = self.tuple_variation_count_byte_range().end;
|
|
start..start + Offset16::RAW_BYTE_LEN
|
|
}
|
|
|
|
pub fn tuple_variation_headers_byte_range(&self) -> Range<usize> {
|
|
let start = self.serialized_data_offset_byte_range().end;
|
|
start..start + self.tuple_variation_headers_byte_len
|
|
}
|
|
}
|
|
|
|
impl MinByteRange for GlyphVariationDataHeaderMarker {
|
|
fn min_byte_range(&self) -> Range<usize> {
|
|
0..self.tuple_variation_headers_byte_range().end
|
|
}
|
|
}
|
|
|
|
impl<'a> FontRead<'a> for GlyphVariationDataHeader<'a> {
|
|
fn read(data: FontData<'a>) -> Result<Self, ReadError> {
|
|
let mut cursor = data.cursor();
|
|
cursor.advance::<TupleVariationCount>();
|
|
cursor.advance::<Offset16>();
|
|
let tuple_variation_headers_byte_len = cursor.remaining_bytes();
|
|
cursor.advance_by(tuple_variation_headers_byte_len);
|
|
cursor.finish(GlyphVariationDataHeaderMarker {
|
|
tuple_variation_headers_byte_len,
|
|
})
|
|
}
|
|
}
|
|
|
|
/// The [GlyphVariationData](https://learn.microsoft.com/en-us/typography/opentype/spec/gvar#the-glyphvariationdata-table-array) table
|
|
pub type GlyphVariationDataHeader<'a> = TableRef<'a, GlyphVariationDataHeaderMarker>;
|
|
|
|
#[allow(clippy::needless_lifetimes)]
|
|
impl<'a> GlyphVariationDataHeader<'a> {
|
|
/// A packed field. The high 4 bits are flags, and the low 12 bits
|
|
/// are the number of tuple variation tables for this glyph. The
|
|
/// number of tuple variation tables can be any number between 1
|
|
/// and 4095.
|
|
pub fn tuple_variation_count(&self) -> TupleVariationCount {
|
|
let range = self.shape.tuple_variation_count_byte_range();
|
|
self.data.read_at(range.start).unwrap()
|
|
}
|
|
|
|
/// Offset from the start of the GlyphVariationData table to the
|
|
/// serialized data
|
|
pub fn serialized_data_offset(&self) -> Offset16 {
|
|
let range = self.shape.serialized_data_offset_byte_range();
|
|
self.data.read_at(range.start).unwrap()
|
|
}
|
|
|
|
/// Attempt to resolve [`serialized_data_offset`][Self::serialized_data_offset].
|
|
pub fn serialized_data(&self) -> Result<FontData<'a>, ReadError> {
|
|
let data = self.data;
|
|
self.serialized_data_offset().resolve(data)
|
|
}
|
|
|
|
/// Array of tuple variation headers.
|
|
pub fn tuple_variation_headers(&self) -> VarLenArray<'a, TupleVariationHeader> {
|
|
let range = self.shape.tuple_variation_headers_byte_range();
|
|
VarLenArray::read(self.data.split_off(range.start).unwrap()).unwrap()
|
|
}
|
|
}
|
|
|
|
#[cfg(feature = "experimental_traverse")]
|
|
impl<'a> SomeTable<'a> for GlyphVariationDataHeader<'a> {
|
|
fn type_name(&self) -> &str {
|
|
"GlyphVariationDataHeader"
|
|
}
|
|
fn get_field(&self, idx: usize) -> Option<Field<'a>> {
|
|
match idx {
|
|
0usize => Some(Field::new(
|
|
"tuple_variation_count",
|
|
traversal::FieldType::Unknown,
|
|
)),
|
|
1usize => Some(Field::new(
|
|
"serialized_data_offset",
|
|
traversal::FieldType::Unknown,
|
|
)),
|
|
2usize => Some(Field::new(
|
|
"tuple_variation_headers",
|
|
traversal::FieldType::Unknown,
|
|
)),
|
|
_ => None,
|
|
}
|
|
}
|
|
}
|
|
|
|
#[cfg(feature = "experimental_traverse")]
|
|
#[allow(clippy::needless_lifetimes)]
|
|
impl<'a> std::fmt::Debug for GlyphVariationDataHeader<'a> {
|
|
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
|
|
(self as &dyn SomeTable<'a>).fmt(f)
|
|
}
|
|
}
|