abin/string/
str_segment.rs

1use crate::{AnyBin, AnyStr, BinSegment, Segment};
2
3/// A segment; segments can be joined to create strings. See `StrBuilder`,
4/// `SegmentIterator` and `SegmentsSlice`.
5///
6/// ```rust
7/// use abin::{NewStr, StrSegment, Str, StrBuilder};
8///
9/// let mut builder = NewStr::builder();
10/// builder.push(StrSegment::Static("Hello, "));
11/// builder.push(StrSegment::Static("World!"));
12/// let string : Str = builder.build();
13///
14/// assert_eq!("Hello, World!", string.as_str());
15/// ```
16#[derive(Debug, Clone)]
17pub enum StrSegment<'a, TBin: AnyBin> {
18    Slice(&'a str),
19    Static(&'static str),
20    Str(AnyStr<TBin>),
21    GivenString(String),
22    Char(char),
23    Empty,
24}
25
26impl<'a, TBin: AnyBin> Into<BinSegment<'a, TBin>> for StrSegment<'a, TBin> {
27    fn into(self) -> BinSegment<'a, TBin> {
28        match self {
29            StrSegment::Slice(slice) => BinSegment::Slice(slice.as_bytes()),
30            StrSegment::Static(slice) => BinSegment::Static(slice.as_bytes()),
31            StrSegment::Str(string) => BinSegment::Bin(string.into_bin()),
32            StrSegment::GivenString(string) => BinSegment::GivenVec(string.into_bytes()),
33            StrSegment::Char(chr) => BinSegment::Bytes128(chr.into()),
34            StrSegment::Empty => BinSegment::Empty,
35        }
36    }
37}
38
39impl<'a, TBin: AnyBin> From<&'static str> for StrSegment<'a, TBin> {
40    fn from(string: &'static str) -> Self {
41        Self::Static(string)
42    }
43}
44
45impl<'a, TBin: AnyBin> From<AnyStr<TBin>> for StrSegment<'a, TBin> {
46    fn from(any_str: AnyStr<TBin>) -> Self {
47        Self::Str(any_str)
48    }
49}
50
51impl<'a, TBin: AnyBin> From<String> for StrSegment<'a, TBin> {
52    fn from(string: String) -> Self {
53        Self::GivenString(string)
54    }
55}
56
57impl<'a, TBin: AnyBin> From<char> for StrSegment<'a, TBin> {
58    fn from(chr: char) -> Self {
59        Self::Char(chr)
60    }
61}
62
63impl<'a, TBin: AnyBin> Segment for StrSegment<'a, TBin> {
64    #[inline]
65    fn number_of_bytes(&self) -> usize {
66        match self {
67            StrSegment::Slice(slice) => slice.len(),
68            StrSegment::Static(slice) => slice.len(),
69            StrSegment::Str(string) => string.len(),
70            StrSegment::GivenString(string) => string.len(),
71            StrSegment::Empty => 0,
72            StrSegment::Char(char) => char.len_utf8(),
73        }
74    }
75
76    #[inline]
77    fn empty() -> Self {
78        Self::Empty
79    }
80}
abin/string/str_segment.rs

abin/string/
str_segment.rs
