1use {crate::TextSize, std::convert::TryInto};
2
3use priv_in_pub::Sealed;
4mod priv_in_pub {
5 pub trait Sealed {}
6}
7
8/// Primitives with a textual length that can be passed to [`TextSize::of`].
9pub trait TextLen: Copy + Sealed {
10 /// The textual length of this primitive.
11 fn text_len(self) -> TextSize;
12}
13
14impl Sealed for &'_ str {}
15impl TextLen for &'_ str {
16 #[inline]
17 fn text_len(self) -> TextSize {
18 self.len().try_into().unwrap()
19 }
20}
21
22impl Sealed for &'_ String {}
23impl TextLen for &'_ String {
24 #[inline]
25 fn text_len(self) -> TextSize {
26 self.as_str().text_len()
27 }
28}
29
30impl Sealed for char {}
31impl TextLen for char {
32 #[inline]
33 fn text_len(self) -> TextSize {
34 (self.len_utf8() as u32).into()
35 }
36}
37