ass-core 0.1.2

High-performance ASS subtitle format parser and analyzer
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
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141

//! Unit tests for [`PositionTracker`] advancing and span construction.

use super::*;
#[test]
fn tracker_creation() {
    let source = "Hello\nWorld";
    let tracker = PositionTracker::new(source);
    assert_eq!(tracker.offset(), 0);
    assert_eq!(tracker.line(), 1);
    assert_eq!(tracker.column(), 1);
}

#[test]
fn tracker_advance_single_line() {
    let source = "Hello World";
    let mut tracker = PositionTracker::new(source);

    tracker.advance(5);
    assert_eq!(tracker.offset(), 5);
    assert_eq!(tracker.line(), 1);
    assert_eq!(tracker.column(), 6);

    tracker.advance(6);
    assert_eq!(tracker.offset(), 11);
    assert_eq!(tracker.line(), 1);
    assert_eq!(tracker.column(), 12);
}

#[test]
fn tracker_advance_multiline() {
    let source = "Hello\nWorld\nTest";
    let mut tracker = PositionTracker::new(source);

    tracker.advance(6); // "Hello\n"
    assert_eq!(tracker.offset(), 6);
    assert_eq!(tracker.line(), 2);
    assert_eq!(tracker.column(), 1);

    tracker.advance(6); // "World\n"
    assert_eq!(tracker.offset(), 12);
    assert_eq!(tracker.line(), 3);
    assert_eq!(tracker.column(), 1);
}

#[test]
fn tracker_skip_whitespace() {
    let source = "   Hello";
    let mut tracker = PositionTracker::new(source);

    tracker.skip_whitespace();
    assert_eq!(tracker.offset(), 3);
    assert_eq!(tracker.column(), 4);
}

#[test]
fn tracker_skip_line() {
    let source = "Hello World\nNext Line";
    let mut tracker = PositionTracker::new(source);

    tracker.skip_line();
    assert_eq!(tracker.offset(), 12);
    assert_eq!(tracker.line(), 2);
    assert_eq!(tracker.column(), 1);
}

#[test]
fn tracker_span_creation() {
    let source = "Hello\nWorld";
    let mut tracker = PositionTracker::new(source);

    let start = tracker.checkpoint();
    tracker.advance(5);

    let span = tracker.span_from(&start);
    assert_eq!(span.start, 0);
    assert_eq!(span.end, 5);
    assert_eq!(span.line, 1);
    assert_eq!(span.column, 1);
}

#[test]
fn tracker_remaining_text() {
    let source = "Hello World";
    let mut tracker = PositionTracker::new(source);

    tracker.advance(6);
    assert_eq!(tracker.remaining(), "World");
}

#[test]
fn tracker_advance_to() {
    let source = "Hello World Test";
    let mut tracker = PositionTracker::new(source);

    tracker.advance_to(11);
    assert_eq!(tracker.offset(), 11);
    assert_eq!(tracker.column(), 12);
}

#[test]
fn tracker_at_end() {
    let source = "Hi";
    let mut tracker = PositionTracker::new(source);

    assert!(!tracker.is_at_end());
    tracker.advance(2);
    assert!(tracker.is_at_end());
}

#[test]
fn tracker_new_at_position() {
    let source = "Hello\nWorld";
    let tracker = PositionTracker::new_at(source, 6, 2, 1);

    assert_eq!(tracker.offset(), 6);
    assert_eq!(tracker.line(), 2);
    assert_eq!(tracker.column(), 1);
}

#[test]
fn tracker_span_for() {
    let source = "Hello World";
    let tracker = PositionTracker::new(source);

    let span = tracker.span_for(5);
    assert_eq!(span.start, 0);
    assert_eq!(span.end, 5);
    assert_eq!(span.line, 1);
    assert_eq!(span.column, 1);
}

#[test]
fn tracker_windows_line_endings() {
    let source = "Hello\r\nWorld";
    let mut tracker = PositionTracker::new(source);

    tracker.advance(7); // "Hello\r\n"
    assert_eq!(tracker.offset(), 7);
    assert_eq!(tracker.line(), 2);
    assert_eq!(tracker.column(), 1);
}