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
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185

//! Scanner unit tests: navigator basics and core scanning (part 1).

use super::*;
use crate::tokenizer::{state::TokenContext, tokens::TokenType};

#[test]
fn char_navigator_new() {
    let source = "test content";
    let nav = CharNavigator::new(source, 5, 2, 3);
    assert_eq!(nav.position(), 5);
    assert_eq!(nav.line(), 2);
    assert_eq!(nav.column(), 3);
}

#[test]
fn char_navigator_peek_char() {
    let source = "hello";
    let mut nav = CharNavigator::new(source, 0, 1, 1);
    assert_eq!(nav.peek_char().unwrap(), 'h');
    assert_eq!(nav.peek_char().unwrap(), 'h'); // Should not advance
    assert_eq!(nav.position(), 0);
}

#[test]
fn char_navigator_peek_next() {
    let source = "hello";
    let nav = CharNavigator::new(source, 0, 1, 1);
    assert_eq!(nav.peek_next().unwrap(), 'e');
}

#[test]
fn char_navigator_advance_char() {
    let source = "hello";
    let mut nav = CharNavigator::new(source, 0, 1, 1);
    assert_eq!(nav.advance_char().unwrap(), 'h');
    assert_eq!(nav.position(), 1);
    assert_eq!(nav.column(), 2);
}

#[test]
fn char_navigator_advance_newline() {
    let source = "line1\nline2";
    let mut nav = CharNavigator::new(source, 0, 1, 1);
    // Advance to newline
    for _ in 0..5 {
        nav.advance_char().unwrap();
    }
    assert_eq!(nav.advance_char().unwrap(), '\n');
    assert_eq!(nav.line(), 2);
    assert_eq!(nav.column(), 1);
}

#[test]
fn char_navigator_advance_carriage_return() {
    let source = "line1\rline2";
    let mut nav = CharNavigator::new(source, 0, 1, 1);
    // Advance to carriage return
    for _ in 0..5 {
        nav.advance_char().unwrap();
    }
    assert_eq!(nav.advance_char().unwrap(), '\r');
    assert_eq!(nav.line(), 2);
    assert_eq!(nav.column(), 1);
}

#[test]
fn char_navigator_advance_crlf() {
    let source = "line1\r\nline2";
    let mut nav = CharNavigator::new(source, 0, 1, 1);
    // Advance to \r
    for _ in 0..5 {
        nav.advance_char().unwrap();
    }
    assert_eq!(nav.advance_char().unwrap(), '\r');
    assert_eq!(nav.line(), 2);
    // Advance to \n
    assert_eq!(nav.advance_char().unwrap(), '\n');
    assert_eq!(nav.line(), 2); // Should not increment again
    assert_eq!(nav.column(), 1);
}

#[test]
fn char_navigator_skip_whitespace() {
    let source = "   \t  hello";
    let mut nav = CharNavigator::new(source, 0, 1, 1);
    nav.skip_whitespace();
    assert_eq!(nav.peek_char().unwrap(), 'h');
}

#[test]
fn char_navigator_skip_whitespace_preserves_newlines() {
    let source = "   \n  hello";
    let mut nav = CharNavigator::new(source, 0, 1, 1);
    nav.skip_whitespace();
    assert_eq!(nav.peek_char().unwrap(), '\n');
}

#[test]
fn char_navigator_is_at_end() {
    let source = "hi";
    let nav = CharNavigator::new(source, 2, 1, 1);
    assert!(nav.is_at_end());

    let nav2 = CharNavigator::new(source, 0, 1, 1);
    assert!(!nav2.is_at_end());
}

#[test]
fn char_navigator_peek_char_at_end() {
    let source = "hi";
    let mut nav = CharNavigator::new(source, 2, 1, 1);
    assert!(nav.peek_char().is_err());
}

#[test]
fn char_navigator_peek_next_at_end() {
    let source = "h";
    let nav = CharNavigator::new(source, 0, 1, 1);
    assert!(nav.peek_next().is_err());
}

#[test]
fn token_scanner_new() {
    let source = "test content";
    let scanner = TokenScanner::new(source, 5, 2, 3);
    assert_eq!(scanner.navigator().position(), 5);
    assert_eq!(scanner.navigator().line(), 2);
    assert_eq!(scanner.navigator().column(), 3);
}

#[test]
fn token_scanner_scan_section_header() {
    let source = "[Script Info]";
    let mut scanner = TokenScanner::new(source, 0, 1, 1);
    let token_type = scanner.scan_section_header().unwrap();
    assert_eq!(token_type, TokenType::SectionHeader);
}

#[test]
fn token_scanner_scan_style_override() {
    let source = "{\\b1\\i1}";
    let mut scanner = TokenScanner::new(source, 0, 1, 1);
    let token_type = scanner.scan_style_override().unwrap();
    assert_eq!(token_type, TokenType::OverrideBlock);
}

#[test]
fn token_scanner_scan_style_override_nested() {
    let source = "{\\b1{\\i1}\\b0}";
    let mut scanner = TokenScanner::new(source, 0, 1, 1);
    let token_type = scanner.scan_style_override().unwrap();
    assert_eq!(token_type, TokenType::OverrideBlock);
}

#[test]
fn token_scanner_scan_comment() {
    let source = "; This is a comment\nNext line";
    let mut scanner = TokenScanner::new(source, 0, 1, 1);
    let token_type = scanner.scan_comment().unwrap();
    assert_eq!(token_type, TokenType::Comment);
}

#[test]
fn token_scanner_scan_text_basic() {
    let source = "Hello World,";
    let mut scanner = TokenScanner::new(source, 0, 1, 1);
    let token_type = scanner.scan_text(TokenContext::Document).unwrap();
    assert_eq!(token_type, TokenType::Text);
}

#[test]
fn token_scanner_scan_text_number() {
    let source = "123.45,";
    let mut scanner = TokenScanner::new(source, 0, 1, 1);
    let token_type = scanner.scan_text(TokenContext::Document).unwrap();
    assert_eq!(token_type, TokenType::Number);
}

#[test]
fn token_scanner_scan_text_hex_value() {
    let source = "&HABCDEF&,";
    let mut scanner = TokenScanner::new(source, 0, 1, 1);
    let token_type = scanner.scan_text(TokenContext::Document).unwrap();
    assert_eq!(token_type, TokenType::HexValue);
}