read_fonts/generated/
generated_gvar.rs

1// THIS FILE IS AUTOGENERATED.
2// Any changes to this file will be overwritten.
3// For more information about how codegen works, see font-codegen/README.md
4
5#[allow(unused_imports)]
6use crate::codegen_prelude::*;
7
8impl<'a> MinByteRange<'a> for Gvar<'a> {
9    fn min_byte_range(&self) -> Range<usize> {
10        0..self.glyph_variation_data_offsets_byte_range().end
11    }
12    fn min_table_bytes(&self) -> &'a [u8] {
13        let range = self.min_byte_range();
14        self.data.as_bytes().get(range).unwrap_or_default()
15    }
16}
17
18impl TopLevelTable for Gvar<'_> {
19    /// `gvar`
20    const TAG: Tag = Tag::new(b"gvar");
21}
22
23impl<'a> FontRead<'a> for Gvar<'a> {
24    fn read(data: FontData<'a>) -> Result<Self, ReadError> {
25        #[allow(clippy::absurd_extreme_comparisons)]
26        if data.len() < Self::MIN_SIZE {
27            return Err(ReadError::OutOfBounds);
28        }
29        Ok(Self { data })
30    }
31}
32
33/// The ['gvar' header](https://learn.microsoft.com/en-us/typography/opentype/spec/gvar#gvar-header)
34#[derive(Clone)]
35pub struct Gvar<'a> {
36    data: FontData<'a>,
37}
38
39#[allow(clippy::needless_lifetimes)]
40impl<'a> Gvar<'a> {
41    pub const MIN_SIZE: usize = (MajorMinor::RAW_BYTE_LEN
42        + u16::RAW_BYTE_LEN
43        + u16::RAW_BYTE_LEN
44        + Offset32::RAW_BYTE_LEN
45        + u16::RAW_BYTE_LEN
46        + GvarFlags::RAW_BYTE_LEN
47        + u32::RAW_BYTE_LEN);
48    basic_table_impls!(impl_the_methods);
49
50    /// Major/minor version number of the glyph variations table — set to (1,0).
51    pub fn version(&self) -> MajorMinor {
52        let range = self.version_byte_range();
53        self.data.read_at(range.start).ok().unwrap()
54    }
55
56    /// The number of variation axes for this font. This must be the
57    /// same number as axisCount in the 'fvar' table.
58    pub fn axis_count(&self) -> u16 {
59        let range = self.axis_count_byte_range();
60        self.data.read_at(range.start).ok().unwrap()
61    }
62
63    /// The number of shared tuple records. Shared tuple records can be
64    /// referenced within glyph variation data tables for multiple
65    /// glyphs, as opposed to other tuple records stored directly
66    /// within a glyph variation data table.
67    pub fn shared_tuple_count(&self) -> u16 {
68        let range = self.shared_tuple_count_byte_range();
69        self.data.read_at(range.start).ok().unwrap()
70    }
71
72    /// Offset from the start of this table to the shared tuple records.
73    pub fn shared_tuples_offset(&self) -> Offset32 {
74        let range = self.shared_tuples_offset_byte_range();
75        self.data.read_at(range.start).ok().unwrap()
76    }
77
78    /// Attempt to resolve [`shared_tuples_offset`][Self::shared_tuples_offset].
79    pub fn shared_tuples(&self) -> Result<SharedTuples<'a>, ReadError> {
80        let data = self.data;
81        let args = (self.shared_tuple_count(), self.axis_count());
82        self.shared_tuples_offset().resolve_with_args(data, &args)
83    }
84
85    /// The number of glyphs in this font. This must match the number
86    /// of glyphs stored elsewhere in the font.
87    pub fn glyph_count(&self) -> u16 {
88        let range = self.glyph_count_byte_range();
89        self.data.read_at(range.start).ok().unwrap()
90    }
91
92    /// Bit-field that gives the format of the offset array that
93    /// follows. If bit 0 is clear, the offsets are uint16; if bit 0 is
94    /// set, the offsets are uint32.
95    pub fn flags(&self) -> GvarFlags {
96        let range = self.flags_byte_range();
97        self.data.read_at(range.start).ok().unwrap()
98    }
99
100    /// Offset from the start of this table to the array of
101    /// GlyphVariationData tables.
102    pub fn glyph_variation_data_array_offset(&self) -> u32 {
103        let range = self.glyph_variation_data_array_offset_byte_range();
104        self.data.read_at(range.start).ok().unwrap()
105    }
106
107    /// Offsets from the start of the GlyphVariationData array to each
108    /// GlyphVariationData table.
109    pub fn glyph_variation_data_offsets(&self) -> ComputedArray<'a, U16Or32> {
110        let range = self.glyph_variation_data_offsets_byte_range();
111        self.data
112            .read_with_args(range, &self.flags())
113            .unwrap_or_default()
114    }
115
116    pub fn version_byte_range(&self) -> Range<usize> {
117        let start = 0;
118        start..start + MajorMinor::RAW_BYTE_LEN
119    }
120
121    pub fn axis_count_byte_range(&self) -> Range<usize> {
122        let start = self.version_byte_range().end;
123        start..start + u16::RAW_BYTE_LEN
124    }
125
126    pub fn shared_tuple_count_byte_range(&self) -> Range<usize> {
127        let start = self.axis_count_byte_range().end;
128        start..start + u16::RAW_BYTE_LEN
129    }
130
131    pub fn shared_tuples_offset_byte_range(&self) -> Range<usize> {
132        let start = self.shared_tuple_count_byte_range().end;
133        start..start + Offset32::RAW_BYTE_LEN
134    }
135
136    pub fn glyph_count_byte_range(&self) -> Range<usize> {
137        let start = self.shared_tuples_offset_byte_range().end;
138        start..start + u16::RAW_BYTE_LEN
139    }
140
141    pub fn flags_byte_range(&self) -> Range<usize> {
142        let start = self.glyph_count_byte_range().end;
143        start..start + GvarFlags::RAW_BYTE_LEN
144    }
145
146    pub fn glyph_variation_data_array_offset_byte_range(&self) -> Range<usize> {
147        let start = self.flags_byte_range().end;
148        start..start + u32::RAW_BYTE_LEN
149    }
150
151    pub fn glyph_variation_data_offsets_byte_range(&self) -> Range<usize> {
152        let glyph_count = self.glyph_count();
153        let start = self.glyph_variation_data_array_offset_byte_range().end;
154        start
155            ..start
156                + (transforms::add(glyph_count, 1_usize)).saturating_mul(
157                    <U16Or32 as ComputeSize>::compute_size(&self.flags()).unwrap_or(0),
158                )
159    }
160}
161
162const _: () = assert!(FontData::default_data_long_enough(Gvar::MIN_SIZE));
163
164impl Default for Gvar<'_> {
165    fn default() -> Self {
166        Self {
167            data: FontData::default_table_data(),
168        }
169    }
170}
171
172#[cfg(feature = "experimental_traverse")]
173impl<'a> SomeTable<'a> for Gvar<'a> {
174    fn type_name(&self) -> &str {
175        "Gvar"
176    }
177    fn get_field(&self, idx: usize) -> Option<Field<'a>> {
178        match idx {
179            0usize => Some(Field::new("version", self.version())),
180            1usize => Some(Field::new("axis_count", self.axis_count())),
181            2usize => Some(Field::new("shared_tuple_count", self.shared_tuple_count())),
182            3usize => Some(Field::new(
183                "shared_tuples_offset",
184                FieldType::offset(self.shared_tuples_offset(), self.shared_tuples()),
185            )),
186            4usize => Some(Field::new("glyph_count", self.glyph_count())),
187            5usize => Some(Field::new("flags", self.flags())),
188            6usize => Some(Field::new(
189                "glyph_variation_data_array_offset",
190                self.glyph_variation_data_array_offset(),
191            )),
192            7usize => Some(Field::new(
193                "glyph_variation_data_offsets",
194                traversal::FieldType::Unknown,
195            )),
196            _ => None,
197        }
198    }
199}
200
201#[cfg(feature = "experimental_traverse")]
202#[allow(clippy::needless_lifetimes)]
203impl<'a> std::fmt::Debug for Gvar<'a> {
204    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
205        (self as &dyn SomeTable<'a>).fmt(f)
206    }
207}
208
209#[derive(Clone, Copy, Default, PartialEq, Eq, PartialOrd, Ord, Hash, bytemuck :: AnyBitPattern)]
210#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
211#[repr(transparent)]
212pub struct GvarFlags {
213    bits: u16,
214}
215
216impl GvarFlags {
217    /// If set, offsets to GlyphVariationData are 32 bits
218    pub const LONG_OFFSETS: Self = Self { bits: 1 };
219}
220
221impl GvarFlags {
222    ///  Returns an empty set of flags.
223    #[inline]
224    pub const fn empty() -> Self {
225        Self { bits: 0 }
226    }
227
228    /// Returns the set containing all flags.
229    #[inline]
230    pub const fn all() -> Self {
231        Self {
232            bits: Self::LONG_OFFSETS.bits,
233        }
234    }
235
236    /// Returns the raw value of the flags currently stored.
237    #[inline]
238    pub const fn bits(&self) -> u16 {
239        self.bits
240    }
241
242    /// Convert from underlying bit representation, unless that
243    /// representation contains bits that do not correspond to a flag.
244    #[inline]
245    pub const fn from_bits(bits: u16) -> Option<Self> {
246        if (bits & !Self::all().bits()) == 0 {
247            Some(Self { bits })
248        } else {
249            None
250        }
251    }
252
253    /// Convert from underlying bit representation, dropping any bits
254    /// that do not correspond to flags.
255    #[inline]
256    pub const fn from_bits_truncate(bits: u16) -> Self {
257        Self {
258            bits: bits & Self::all().bits,
259        }
260    }
261
262    /// Returns `true` if no flags are currently stored.
263    #[inline]
264    pub const fn is_empty(&self) -> bool {
265        self.bits() == Self::empty().bits()
266    }
267
268    /// Returns `true` if there are flags common to both `self` and `other`.
269    #[inline]
270    pub const fn intersects(&self, other: Self) -> bool {
271        !(Self {
272            bits: self.bits & other.bits,
273        })
274        .is_empty()
275    }
276
277    /// Returns `true` if all of the flags in `other` are contained within `self`.
278    #[inline]
279    pub const fn contains(&self, other: Self) -> bool {
280        (self.bits & other.bits) == other.bits
281    }
282
283    /// Inserts the specified flags in-place.
284    #[inline]
285    pub fn insert(&mut self, other: Self) {
286        self.bits |= other.bits;
287    }
288
289    /// Removes the specified flags in-place.
290    #[inline]
291    pub fn remove(&mut self, other: Self) {
292        self.bits &= !other.bits;
293    }
294
295    /// Toggles the specified flags in-place.
296    #[inline]
297    pub fn toggle(&mut self, other: Self) {
298        self.bits ^= other.bits;
299    }
300
301    /// Returns the intersection between the flags in `self` and
302    /// `other`.
303    ///
304    /// Specifically, the returned set contains only the flags which are
305    /// present in *both* `self` *and* `other`.
306    ///
307    /// This is equivalent to using the `&` operator (e.g.
308    /// [`ops::BitAnd`]), as in `flags & other`.
309    ///
310    /// [`ops::BitAnd`]: https://doc.rust-lang.org/std/ops/trait.BitAnd.html
311    #[inline]
312    #[must_use]
313    pub const fn intersection(self, other: Self) -> Self {
314        Self {
315            bits: self.bits & other.bits,
316        }
317    }
318
319    /// Returns the union of between the flags in `self` and `other`.
320    ///
321    /// Specifically, the returned set contains all flags which are
322    /// present in *either* `self` *or* `other`, including any which are
323    /// present in both.
324    ///
325    /// This is equivalent to using the `|` operator (e.g.
326    /// [`ops::BitOr`]), as in `flags | other`.
327    ///
328    /// [`ops::BitOr`]: https://doc.rust-lang.org/std/ops/trait.BitOr.html
329    #[inline]
330    #[must_use]
331    pub const fn union(self, other: Self) -> Self {
332        Self {
333            bits: self.bits | other.bits,
334        }
335    }
336
337    /// Returns the difference between the flags in `self` and `other`.
338    ///
339    /// Specifically, the returned set contains all flags present in
340    /// `self`, except for the ones present in `other`.
341    ///
342    /// It is also conceptually equivalent to the "bit-clear" operation:
343    /// `flags & !other` (and this syntax is also supported).
344    ///
345    /// This is equivalent to using the `-` operator (e.g.
346    /// [`ops::Sub`]), as in `flags - other`.
347    ///
348    /// [`ops::Sub`]: https://doc.rust-lang.org/std/ops/trait.Sub.html
349    #[inline]
350    #[must_use]
351    pub const fn difference(self, other: Self) -> Self {
352        Self {
353            bits: self.bits & !other.bits,
354        }
355    }
356}
357
358impl std::ops::BitOr for GvarFlags {
359    type Output = Self;
360
361    /// Returns the union of the two sets of flags.
362    #[inline]
363    fn bitor(self, other: GvarFlags) -> Self {
364        Self {
365            bits: self.bits | other.bits,
366        }
367    }
368}
369
370impl std::ops::BitOrAssign for GvarFlags {
371    /// Adds the set of flags.
372    #[inline]
373    fn bitor_assign(&mut self, other: Self) {
374        self.bits |= other.bits;
375    }
376}
377
378impl std::ops::BitXor for GvarFlags {
379    type Output = Self;
380
381    /// Returns the left flags, but with all the right flags toggled.
382    #[inline]
383    fn bitxor(self, other: Self) -> Self {
384        Self {
385            bits: self.bits ^ other.bits,
386        }
387    }
388}
389
390impl std::ops::BitXorAssign for GvarFlags {
391    /// Toggles the set of flags.
392    #[inline]
393    fn bitxor_assign(&mut self, other: Self) {
394        self.bits ^= other.bits;
395    }
396}
397
398impl std::ops::BitAnd for GvarFlags {
399    type Output = Self;
400
401    /// Returns the intersection between the two sets of flags.
402    #[inline]
403    fn bitand(self, other: Self) -> Self {
404        Self {
405            bits: self.bits & other.bits,
406        }
407    }
408}
409
410impl std::ops::BitAndAssign for GvarFlags {
411    /// Disables all flags disabled in the set.
412    #[inline]
413    fn bitand_assign(&mut self, other: Self) {
414        self.bits &= other.bits;
415    }
416}
417
418impl std::ops::Sub for GvarFlags {
419    type Output = Self;
420
421    /// Returns the set difference of the two sets of flags.
422    #[inline]
423    fn sub(self, other: Self) -> Self {
424        Self {
425            bits: self.bits & !other.bits,
426        }
427    }
428}
429
430impl std::ops::SubAssign for GvarFlags {
431    /// Disables all flags enabled in the set.
432    #[inline]
433    fn sub_assign(&mut self, other: Self) {
434        self.bits &= !other.bits;
435    }
436}
437
438impl std::ops::Not for GvarFlags {
439    type Output = Self;
440
441    /// Returns the complement of this set of flags.
442    #[inline]
443    fn not(self) -> Self {
444        Self { bits: !self.bits } & Self::all()
445    }
446}
447
448impl std::fmt::Debug for GvarFlags {
449    fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
450        let members: &[(&str, Self)] = &[("LONG_OFFSETS", Self::LONG_OFFSETS)];
451        let mut first = true;
452        for (name, value) in members {
453            if self.contains(*value) {
454                if !first {
455                    f.write_str(" | ")?;
456                }
457                first = false;
458                f.write_str(name)?;
459            }
460        }
461        if first {
462            f.write_str("(empty)")?;
463        }
464        Ok(())
465    }
466}
467
468impl std::fmt::Binary for GvarFlags {
469    fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
470        std::fmt::Binary::fmt(&self.bits, f)
471    }
472}
473
474impl std::fmt::Octal for GvarFlags {
475    fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
476        std::fmt::Octal::fmt(&self.bits, f)
477    }
478}
479
480impl std::fmt::LowerHex for GvarFlags {
481    fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
482        std::fmt::LowerHex::fmt(&self.bits, f)
483    }
484}
485
486impl std::fmt::UpperHex for GvarFlags {
487    fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
488        std::fmt::UpperHex::fmt(&self.bits, f)
489    }
490}
491
492impl font_types::Scalar for GvarFlags {
493    type Raw = <u16 as font_types::Scalar>::Raw;
494    fn to_raw(self) -> Self::Raw {
495        self.bits().to_raw()
496    }
497    fn from_raw(raw: Self::Raw) -> Self {
498        let t = <u16>::from_raw(raw);
499        Self::from_bits_truncate(t)
500    }
501}
502
503#[cfg(feature = "experimental_traverse")]
504impl<'a> From<GvarFlags> for FieldType<'a> {
505    fn from(src: GvarFlags) -> FieldType<'a> {
506        src.bits().into()
507    }
508}
509
510impl<'a> MinByteRange<'a> for SharedTuples<'a> {
511    fn min_byte_range(&self) -> Range<usize> {
512        0..self.tuples_byte_range().end
513    }
514    fn min_table_bytes(&self) -> &'a [u8] {
515        let range = self.min_byte_range();
516        self.data.as_bytes().get(range).unwrap_or_default()
517    }
518}
519
520impl ReadArgs for SharedTuples<'_> {
521    type Args = (u16, u16);
522}
523
524impl<'a> FontReadWithArgs<'a> for SharedTuples<'a> {
525    fn read_with_args(data: FontData<'a>, args: &(u16, u16)) -> Result<Self, ReadError> {
526        let (shared_tuple_count, axis_count) = *args;
527
528        #[allow(clippy::absurd_extreme_comparisons)]
529        if data.len() < Self::MIN_SIZE {
530            return Err(ReadError::OutOfBounds);
531        }
532        Ok(Self {
533            data,
534            shared_tuple_count,
535            axis_count,
536        })
537    }
538}
539
540impl<'a> SharedTuples<'a> {
541    /// A constructor that requires additional arguments.
542    ///
543    /// This type requires some external state in order to be
544    /// parsed.
545    pub fn read(
546        data: FontData<'a>,
547        shared_tuple_count: u16,
548        axis_count: u16,
549    ) -> Result<Self, ReadError> {
550        let args = (shared_tuple_count, axis_count);
551        Self::read_with_args(data, &args)
552    }
553}
554
555/// Array of tuple records shared across all glyph variation data tables.
556#[derive(Clone)]
557pub struct SharedTuples<'a> {
558    data: FontData<'a>,
559    shared_tuple_count: u16,
560    axis_count: u16,
561}
562
563#[allow(clippy::needless_lifetimes)]
564impl<'a> SharedTuples<'a> {
565    pub const MIN_SIZE: usize = 0;
566    basic_table_impls!(impl_the_methods);
567
568    pub fn tuples(&self) -> ComputedArray<'a, Tuple<'a>> {
569        let range = self.tuples_byte_range();
570        self.data
571            .read_with_args(range, &self.axis_count())
572            .unwrap_or_default()
573    }
574
575    pub(crate) fn shared_tuple_count(&self) -> u16 {
576        self.shared_tuple_count
577    }
578
579    pub(crate) fn axis_count(&self) -> u16 {
580        self.axis_count
581    }
582
583    pub fn tuples_byte_range(&self) -> Range<usize> {
584        let shared_tuple_count = self.shared_tuple_count();
585        let start = 0;
586        start
587            ..start
588                + (shared_tuple_count as usize).saturating_mul(
589                    <Tuple as ComputeSize>::compute_size(&self.axis_count()).unwrap_or(0),
590                )
591    }
592}
593
594#[allow(clippy::absurd_extreme_comparisons)]
595const _: () = assert!(FontData::default_data_long_enough(SharedTuples::MIN_SIZE));
596
597impl Default for SharedTuples<'_> {
598    fn default() -> Self {
599        Self {
600            data: FontData::default_table_data(),
601            shared_tuple_count: Default::default(),
602            axis_count: Default::default(),
603        }
604    }
605}
606
607#[cfg(feature = "experimental_traverse")]
608impl<'a> SomeTable<'a> for SharedTuples<'a> {
609    fn type_name(&self) -> &str {
610        "SharedTuples"
611    }
612    fn get_field(&self, idx: usize) -> Option<Field<'a>> {
613        match idx {
614            0usize => Some(Field::new(
615                "tuples",
616                traversal::FieldType::computed_array("Tuple", self.tuples(), self.offset_data()),
617            )),
618            _ => None,
619        }
620    }
621}
622
623#[cfg(feature = "experimental_traverse")]
624#[allow(clippy::needless_lifetimes)]
625impl<'a> std::fmt::Debug for SharedTuples<'a> {
626    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
627        (self as &dyn SomeTable<'a>).fmt(f)
628    }
629}
630
631impl<'a> MinByteRange<'a> for GlyphVariationDataHeader<'a> {
632    fn min_byte_range(&self) -> Range<usize> {
633        0..self.tuple_variation_headers_byte_range().end
634    }
635    fn min_table_bytes(&self) -> &'a [u8] {
636        let range = self.min_byte_range();
637        self.data.as_bytes().get(range).unwrap_or_default()
638    }
639}
640
641impl<'a> FontRead<'a> for GlyphVariationDataHeader<'a> {
642    fn read(data: FontData<'a>) -> Result<Self, ReadError> {
643        #[allow(clippy::absurd_extreme_comparisons)]
644        if data.len() < Self::MIN_SIZE {
645            return Err(ReadError::OutOfBounds);
646        }
647        Ok(Self { data })
648    }
649}
650
651/// The [GlyphVariationData](https://learn.microsoft.com/en-us/typography/opentype/spec/gvar#the-glyphvariationdata-table-array) table
652#[derive(Clone)]
653pub struct GlyphVariationDataHeader<'a> {
654    data: FontData<'a>,
655}
656
657#[allow(clippy::needless_lifetimes)]
658impl<'a> GlyphVariationDataHeader<'a> {
659    pub const MIN_SIZE: usize = (TupleVariationCount::RAW_BYTE_LEN + Offset16::RAW_BYTE_LEN);
660    basic_table_impls!(impl_the_methods);
661
662    /// A packed field. The high 4 bits are flags, and the low 12 bits
663    /// are the number of tuple variation tables for this glyph. The
664    /// number of tuple variation tables can be any number between 1
665    /// and 4095.
666    pub fn tuple_variation_count(&self) -> TupleVariationCount {
667        let range = self.tuple_variation_count_byte_range();
668        self.data.read_at(range.start).ok().unwrap()
669    }
670
671    /// Offset from the start of the GlyphVariationData table to the
672    /// serialized data
673    pub fn serialized_data_offset(&self) -> Offset16 {
674        let range = self.serialized_data_offset_byte_range();
675        self.data.read_at(range.start).ok().unwrap()
676    }
677
678    /// Attempt to resolve [`serialized_data_offset`][Self::serialized_data_offset].
679    pub fn serialized_data(&self) -> Result<FontData<'a>, ReadError> {
680        let data = self.data;
681        self.serialized_data_offset().resolve(data)
682    }
683
684    /// Array of tuple variation headers.
685    pub fn tuple_variation_headers(&self) -> VarLenArray<'a, TupleVariationHeader<'a>> {
686        let range = self.tuple_variation_headers_byte_range();
687        self.data
688            .split_off(range.start)
689            .and_then(|d| VarLenArray::read(d).ok())
690            .unwrap_or_default()
691    }
692
693    pub fn tuple_variation_count_byte_range(&self) -> Range<usize> {
694        let start = 0;
695        start..start + TupleVariationCount::RAW_BYTE_LEN
696    }
697
698    pub fn serialized_data_offset_byte_range(&self) -> Range<usize> {
699        let start = self.tuple_variation_count_byte_range().end;
700        start..start + Offset16::RAW_BYTE_LEN
701    }
702
703    pub fn tuple_variation_headers_byte_range(&self) -> Range<usize> {
704        let start = self.serialized_data_offset_byte_range().end;
705        start..start + self.data.len().saturating_sub(start)
706    }
707}
708
709const _: () = assert!(FontData::default_data_long_enough(
710    GlyphVariationDataHeader::MIN_SIZE
711));
712
713impl Default for GlyphVariationDataHeader<'_> {
714    fn default() -> Self {
715        Self {
716            data: FontData::default_table_data(),
717        }
718    }
719}
720
721#[cfg(feature = "experimental_traverse")]
722impl<'a> SomeTable<'a> for GlyphVariationDataHeader<'a> {
723    fn type_name(&self) -> &str {
724        "GlyphVariationDataHeader"
725    }
726    fn get_field(&self, idx: usize) -> Option<Field<'a>> {
727        match idx {
728            0usize => Some(Field::new(
729                "tuple_variation_count",
730                traversal::FieldType::Unknown,
731            )),
732            1usize => Some(Field::new(
733                "serialized_data_offset",
734                traversal::FieldType::Unknown,
735            )),
736            2usize => Some(Field::new(
737                "tuple_variation_headers",
738                traversal::FieldType::Unknown,
739            )),
740            _ => None,
741        }
742    }
743}
744
745#[cfg(feature = "experimental_traverse")]
746#[allow(clippy::needless_lifetimes)]
747impl<'a> std::fmt::Debug for GlyphVariationDataHeader<'a> {
748    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
749        (self as &dyn SomeTable<'a>).fmt(f)
750    }
751}
read_fonts/generated/generated_gvar.rs

read_fonts/generated/
generated_gvar.rs
