r3bl_tui 0.7.2

TUI library to build modern apps inspired by React, Elm, with Flexbox, CSS, editor component, emoji support, and more
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111

/*
 *   Copyright (c) 2022-2025 R3BL LLC
 *   All rights reserved.
 *
 *   Licensed under the Apache License, Version 2.0 (the "License");
 *   you may not use this file except in compliance with the License.
 *   You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 *   Unless required by applicable law or agreed to in writing, software
 *   distributed under the License is distributed on an "AS IS" BASIS,
 *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *   See the License for the specific language governing permissions and
 *   limitations under the License.
 */

use std::borrow::Cow;

use smallstr::SmallString;
use smallvec::Array;

use crate::GCString;

/// `GCStringExt` trait that allows converting lots of different types into
/// [`GCString`].
pub trait GCStringExt {
    fn grapheme_string(&self) -> GCString;
}

mod convert_impl_blocks {
    use super::{Array, Cow, GCString, GCStringExt, SmallString};

    impl<A: Array<Item = u8>> GCStringExt for SmallString<A> {
        fn grapheme_string(&self) -> GCString { GCString::new(self.as_str()) }
    }

    impl<A: Array<Item = u8>> GCStringExt for &SmallString<A> {
        fn grapheme_string(&self) -> GCString { GCString::new(self.as_str()) }
    }

    impl GCStringExt for dyn AsRef<str> {
        fn grapheme_string(&self) -> GCString { GCString::new(self.as_ref()) }
    }

    impl GCStringExt for Cow<'_, str> {
        fn grapheme_string(&self) -> GCString { GCString::new(self) }
    }

    impl GCStringExt for &str {
        fn grapheme_string(&self) -> GCString { GCString::new(self) }
    }

    impl GCStringExt for &&str {
        fn grapheme_string(&self) -> GCString { GCString::new(self) }
    }

    impl GCStringExt for String {
        fn grapheme_string(&self) -> GCString { GCString::new(self) }
    }
}

#[cfg(test)]
mod tests_unicode_string_ext {
    use super::*;

    #[test]
    fn test_unicode_string_for_smallstring() {
        let small_str: SmallString<[u8; 16]> = SmallString::from("hello");
        assert_eq!(small_str.grapheme_string(), GCString::new("hello"));
    }

    #[test]
    fn test_unicode_string_for_cow() {
        let cow_str: Cow<'_, str> = Cow::Borrowed("hello");
        assert_eq!(cow_str.grapheme_string(), GCString::new("hello"));
    }

    #[test]
    fn test_unicode_string_for_str() {
        let str_slice: &str = "hello";
        assert_eq!(str_slice.grapheme_string(), GCString::new("hello"));
    }

    #[test]
    fn test_unicode_string_for_string() {
        let string: String = String::from("hello");
        assert_eq!(string.grapheme_string(), GCString::new("hello"));
    }

    #[test]
    fn test_unicode_string_for_ref_small_str() {
        let small_str: SmallString<[u8; 16]> = SmallString::from("hello");
        let ref_small_str: &SmallString<[u8; 16]> = &small_str;
        assert_eq!(ref_small_str.grapheme_string(), GCString::new("hello"));
    }

    #[test]
    fn test_unicode_string_for_dyn_as_ref_str() {
        let string: String = String::from("hello");
        let dyn_as_ref_str: &dyn AsRef<str> = &string;
        assert_eq!(dyn_as_ref_str.grapheme_string(), GCString::new("hello"));
    }

    #[test]
    fn test_unicode_string_for_ref_str() {
        let str_slice: &str = "hello";
        let ref_str_slice: &&str = &str_slice;
        assert_eq!(ref_str_slice.grapheme_string(), GCString::new("hello"));
    }
}