read_fonts/generated/
generated_feat.rs

// 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 [feature name](https://developer.apple.com/fonts/TrueType-Reference-Manual/RM06/Chap6feat.html) table.
#[derive(Debug, Clone, Copy)]
#[doc(hidden)]
pub struct FeatMarker {
    names_byte_len: usize,
}

impl FeatMarker {
    fn version_byte_range(&self) -> Range<usize> {
        let start = 0;
        start..start + MajorMinor::RAW_BYTE_LEN
    }
    fn feature_name_count_byte_range(&self) -> Range<usize> {
        let start = self.version_byte_range().end;
        start..start + u16::RAW_BYTE_LEN
    }
    fn _reserved1_byte_range(&self) -> Range<usize> {
        let start = self.feature_name_count_byte_range().end;
        start..start + u16::RAW_BYTE_LEN
    }
    fn _reserved2_byte_range(&self) -> Range<usize> {
        let start = self._reserved1_byte_range().end;
        start..start + u32::RAW_BYTE_LEN
    }
    fn names_byte_range(&self) -> Range<usize> {
        let start = self._reserved2_byte_range().end;
        start..start + self.names_byte_len
    }
}

impl TopLevelTable for Feat<'_> {
    /// `feat`
    const TAG: Tag = Tag::new(b"feat");
}

impl<'a> FontRead<'a> for Feat<'a> {
    fn read(data: FontData<'a>) -> Result<Self, ReadError> {
        let mut cursor = data.cursor();
        cursor.advance::<MajorMinor>();
        let feature_name_count: u16 = cursor.read()?;
        cursor.advance::<u16>();
        cursor.advance::<u32>();
        let names_byte_len = (feature_name_count as usize)
            .checked_mul(FeatureName::RAW_BYTE_LEN)
            .ok_or(ReadError::OutOfBounds)?;
        cursor.advance_by(names_byte_len);
        cursor.finish(FeatMarker { names_byte_len })
    }
}

/// The [feature name](https://developer.apple.com/fonts/TrueType-Reference-Manual/RM06/Chap6feat.html) table.
pub type Feat<'a> = TableRef<'a, FeatMarker>;

impl<'a> Feat<'a> {
    /// Version number of the feature name table (0x00010000 for the current
    /// version).
    pub fn version(&self) -> MajorMinor {
        let range = self.shape.version_byte_range();
        self.data.read_at(range.start).unwrap()
    }

    /// The number of entries in the feature name array.
    pub fn feature_name_count(&self) -> u16 {
        let range = self.shape.feature_name_count_byte_range();
        self.data.read_at(range.start).unwrap()
    }

    /// The feature name array, sorted by feature type.
    pub fn names(&self) -> &'a [FeatureName] {
        let range = self.shape.names_byte_range();
        self.data.read_array(range).unwrap()
    }
}

#[cfg(feature = "experimental_traverse")]
impl<'a> SomeTable<'a> for Feat<'a> {
    fn type_name(&self) -> &str {
        "Feat"
    }
    fn get_field(&self, idx: usize) -> Option<Field<'a>> {
        match idx {
            0usize => Some(Field::new("version", self.version())),
            1usize => Some(Field::new("feature_name_count", self.feature_name_count())),
            2usize => Some(Field::new(
                "names",
                traversal::FieldType::array_of_records(
                    stringify!(FeatureName),
                    self.names(),
                    self.offset_data(),
                ),
            )),
            _ => None,
        }
    }
}

#[cfg(feature = "experimental_traverse")]
impl<'a> std::fmt::Debug for Feat<'a> {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        (self as &dyn SomeTable<'a>).fmt(f)
    }
}

/// Type, flags and names for a feature.
#[derive(Clone, Debug, Copy, bytemuck :: AnyBitPattern)]
#[repr(C)]
#[repr(packed)]
pub struct FeatureName {
    /// Feature type.
    pub feature: BigEndian<u16>,
    /// The number of records in the setting name array.
    pub n_settings: BigEndian<u16>,
    /// Offset in bytes from the beginning of this table to this feature's
    /// setting name array. The actual type of record this offset refers
    /// to will depend on the exclusivity value, as described below.
    pub setting_table_offset: BigEndian<Offset32>,
    /// Flags associated with the feature type.
    pub feature_flags: BigEndian<u16>,
    /// The name table index for the feature's name.
    pub name_index: BigEndian<NameId>,
}

impl FeatureName {
    /// Feature type.
    pub fn feature(&self) -> u16 {
        self.feature.get()
    }

    /// The number of records in the setting name array.
    pub fn n_settings(&self) -> u16 {
        self.n_settings.get()
    }

    /// Offset in bytes from the beginning of this table to this feature's
    /// setting name array. The actual type of record this offset refers
    /// to will depend on the exclusivity value, as described below.
    pub fn setting_table_offset(&self) -> Offset32 {
        self.setting_table_offset.get()
    }

    /// Offset in bytes from the beginning of this table to this feature's
    /// setting name array. The actual type of record this offset refers
    /// to will depend on the exclusivity value, as described below.
    ///
    /// The `data` argument should be retrieved from the parent table
    /// By calling its `offset_data` method.
    pub fn setting_table<'a>(&self, data: FontData<'a>) -> Result<SettingNameArray<'a>, ReadError> {
        let args = self.n_settings();
        self.setting_table_offset().resolve_with_args(data, &args)
    }

    /// Flags associated with the feature type.
    pub fn feature_flags(&self) -> u16 {
        self.feature_flags.get()
    }

    /// The name table index for the feature's name.
    pub fn name_index(&self) -> NameId {
        self.name_index.get()
    }
}

impl FixedSize for FeatureName {
    const RAW_BYTE_LEN: usize = u16::RAW_BYTE_LEN
        + u16::RAW_BYTE_LEN
        + Offset32::RAW_BYTE_LEN
        + u16::RAW_BYTE_LEN
        + NameId::RAW_BYTE_LEN;
}

#[cfg(feature = "experimental_traverse")]
impl<'a> SomeRecord<'a> for FeatureName {
    fn traverse(self, data: FontData<'a>) -> RecordResolver<'a> {
        RecordResolver {
            name: "FeatureName",
            get_field: Box::new(move |idx, _data| match idx {
                0usize => Some(Field::new("feature", self.feature())),
                1usize => Some(Field::new("n_settings", self.n_settings())),
                2usize => Some(Field::new(
                    "setting_table_offset",
                    FieldType::offset(self.setting_table_offset(), self.setting_table(_data)),
                )),
                3usize => Some(Field::new("feature_flags", self.feature_flags())),
                4usize => Some(Field::new("name_index", self.name_index())),
                _ => None,
            }),
            data,
        }
    }
}

#[derive(Debug, Clone, Copy)]
#[doc(hidden)]
pub struct SettingNameArrayMarker {
    settings_byte_len: usize,
}

impl SettingNameArrayMarker {
    fn settings_byte_range(&self) -> Range<usize> {
        let start = 0;
        start..start + self.settings_byte_len
    }
}

impl ReadArgs for SettingNameArray<'_> {
    type Args = u16;
}

impl<'a> FontReadWithArgs<'a> for SettingNameArray<'a> {
    fn read_with_args(data: FontData<'a>, args: &u16) -> Result<Self, ReadError> {
        let n_settings = *args;
        let mut cursor = data.cursor();
        let settings_byte_len = (n_settings as usize)
            .checked_mul(SettingName::RAW_BYTE_LEN)
            .ok_or(ReadError::OutOfBounds)?;
        cursor.advance_by(settings_byte_len);
        cursor.finish(SettingNameArrayMarker { settings_byte_len })
    }
}

impl<'a> SettingNameArray<'a> {
    /// A constructor that requires additional arguments.
    ///
    /// This type requires some external state in order to be
    /// parsed.
    pub fn read(data: FontData<'a>, n_settings: u16) -> Result<Self, ReadError> {
        let args = n_settings;
        Self::read_with_args(data, &args)
    }
}

pub type SettingNameArray<'a> = TableRef<'a, SettingNameArrayMarker>;

impl<'a> SettingNameArray<'a> {
    /// List of setting names for a feature.
    pub fn settings(&self) -> &'a [SettingName] {
        let range = self.shape.settings_byte_range();
        self.data.read_array(range).unwrap()
    }
}

#[cfg(feature = "experimental_traverse")]
impl<'a> SomeTable<'a> for SettingNameArray<'a> {
    fn type_name(&self) -> &str {
        "SettingNameArray"
    }
    fn get_field(&self, idx: usize) -> Option<Field<'a>> {
        match idx {
            0usize => Some(Field::new(
                "settings",
                traversal::FieldType::array_of_records(
                    stringify!(SettingName),
                    self.settings(),
                    self.offset_data(),
                ),
            )),
            _ => None,
        }
    }
}

#[cfg(feature = "experimental_traverse")]
impl<'a> std::fmt::Debug for SettingNameArray<'a> {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        (self as &dyn SomeTable<'a>).fmt(f)
    }
}

/// Associates a setting with a name identifier.
#[derive(Clone, Debug, PartialEq, Eq, PartialOrd, Ord, Hash, Copy, bytemuck :: AnyBitPattern)]
#[repr(C)]
#[repr(packed)]
pub struct SettingName {
    /// The setting.
    pub setting: BigEndian<u16>,
    /// The name table index for the setting's name.
    pub name_index: BigEndian<NameId>,
}

impl SettingName {
    /// The setting.
    pub fn setting(&self) -> u16 {
        self.setting.get()
    }

    /// The name table index for the setting's name.
    pub fn name_index(&self) -> NameId {
        self.name_index.get()
    }
}

impl FixedSize for SettingName {
    const RAW_BYTE_LEN: usize = u16::RAW_BYTE_LEN + NameId::RAW_BYTE_LEN;
}

#[cfg(feature = "experimental_traverse")]
impl<'a> SomeRecord<'a> for SettingName {
    fn traverse(self, data: FontData<'a>) -> RecordResolver<'a> {
        RecordResolver {
            name: "SettingName",
            get_field: Box::new(move |idx, _data| match idx {
                0usize => Some(Field::new("setting", self.setting())),
                1usize => Some(Field::new("name_index", self.name_index())),
                _ => None,
            }),
            data,
        }
    }
}
read_fonts/generated/generated_feat.rs

read_fonts/generated/
generated_feat.rs
