windjammer 0.48.0

A simple language inspired by Go, Ruby, and Elixir that transpiles to Rust - 80% of Rust's power with 20% of the complexity
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

#![cfg(any(
    not(any(
        feature = "parser_tests",
        feature = "analyzer_tests",
        feature = "codegen_tests",
        feature = "interpreter_tests",
        feature = "conformance_tests",
        feature = "integration_tests",
    )),
    feature = "analyzer_tests",
))]

use windjammer::lexer::{Lexer, Token};

#[path = "common/test_utils.rs"]
mod test_utils;

fn tokenize(input: &str) -> Vec<Token> {
    let mut lexer = Lexer::new(input);
    let mut tokens = Vec::new();
    loop {
        let token = lexer.next_token();
        if token == Token::Eof {
            break;
        }
        tokens.push(token);
    }
    tokens
}

#[test]
fn test_scientific_notation_integer_base() {
    let tokens = tokenize("1e10");
    assert_eq!(
        tokens.len(),
        1,
        "1e10 should be a single token, got: {:?}",
        tokens
    );
    match &tokens[0] {
        Token::FloatLiteral(f) => {
            assert!(
                (f - 1e10).abs() < 1.0,
                "Expected 1e10 = 10000000000.0, got {}",
                f
            );
        }
        other => panic!("Expected FloatLiteral, got {:?}", other),
    }
}

#[test]
fn test_scientific_notation_float_base() {
    let tokens = tokenize("2.5e3");
    assert_eq!(
        tokens.len(),
        1,
        "2.5e3 should be a single token, got: {:?}",
        tokens
    );
    match &tokens[0] {
        Token::FloatLiteral(f) => {
            assert!((f - 2500.0).abs() < 0.001, "Expected 2500.0, got {}", f);
        }
        other => panic!("Expected FloatLiteral, got {:?}", other),
    }
}

#[test]
fn test_scientific_notation_negative_exponent() {
    let tokens = tokenize("1e-5");
    assert_eq!(
        tokens.len(),
        1,
        "1e-5 should be a single token, got: {:?}",
        tokens
    );
    match &tokens[0] {
        Token::FloatLiteral(f) => {
            assert!((f - 1e-5).abs() < 1e-10, "Expected 1e-5, got {}", f);
        }
        other => panic!("Expected FloatLiteral, got {:?}", other),
    }
}

#[test]
fn test_scientific_notation_positive_exponent() {
    let tokens = tokenize("3E+2");
    assert_eq!(
        tokens.len(),
        1,
        "3E+2 should be a single token, got: {:?}",
        tokens
    );
    match &tokens[0] {
        Token::FloatLiteral(f) => {
            assert!((f - 300.0).abs() < 0.001, "Expected 300.0, got {}", f);
        }
        other => panic!("Expected FloatLiteral, got {:?}", other),
    }
}

#[test]
fn test_scientific_notation_uppercase_e() {
    let tokens = tokenize("5E10");
    assert_eq!(tokens.len(), 1);
    match &tokens[0] {
        Token::FloatLiteral(f) => {
            assert!((f - 5e10).abs() < 1.0, "Expected 5e10, got {}", f);
        }
        other => panic!("Expected FloatLiteral, got {:?}", other),
    }
}

#[test]
fn test_scientific_notation_float_negative_exp() {
    let tokens = tokenize("6.022e-23");
    assert_eq!(tokens.len(), 1);
    match &tokens[0] {
        Token::FloatLiteral(f) => {
            assert!(
                (f - 6.022e-23).abs() < 1e-30,
                "Expected 6.022e-23, got {}",
                f
            );
        }
        other => panic!("Expected FloatLiteral, got {:?}", other),
    }
}

#[test]
fn test_scientific_notation_in_let_expression() {
    let tokens = tokenize("let x = 1e10");
    let float_tokens: Vec<&Token> = tokens
        .iter()
        .filter(|t| matches!(t, Token::FloatLiteral(_)))
        .collect();
    assert_eq!(
        float_tokens.len(),
        1,
        "Should have exactly one float literal in 'let x = 1e10'"
    );
}

#[test]
fn test_scientific_notation_codegen_rust() {
    let output = test_utils::compile_single(
        r#"
fn get_threshold() -> f64 {
    let x = 1e10
    x
}
"#,
    );
    assert!(
        output.contains("1e10") || output.contains("10000000000"),
        "Generated Rust should contain the scientific notation value. Got:\n{}",
        output
    );
    assert!(
        !output.contains("e10;"),
        "Should NOT generate 'e10' as a separate identifier"
    );
}