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use truetype::Tag;
table! {
@position
#[doc = "A feature list."]
pub Features {
count (u16),
headers (Vec<Header>) |this, tape, _| {
tape.take_given(this.count as usize)
},
records (Vec<Record>) |this, tape, position| {
jump_take!(tape, position, this.count, i => this.headers[i].offset)
},
}
}
table! {
#[doc = "A feature header."]
#[derive(Copy)]
pub Header {
tag (Tag),
offset (u16),
}
}
table! {
@position
#[doc = "A feature record."]
pub Record {
parameter_offset (u16),
lookup_count (u16),
lookup_indices (Vec<u16>) |this, tape, _| {
tape.take_given(this.lookup_count as usize)
},
parameters (Option<Vec<u8>>) |this, tape, position| {
if this.parameter_offset != 0 {
try!(tape.jump(position + this.parameter_offset as u64));
Ok(Some(try!(tape.take_bytes(0))))
} else {
Ok(None)
}
},
}
}