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

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

/// TDD Test: Vec.remove(index) should NOT add & to the index argument
///
/// Problem: Vec::remove takes an owned `usize` index, but the compiler
/// incorrectly adds `&` to the argument (treating it like HashMap::remove
/// which takes &K).
///
/// Example from text_input.wj:
///   let pos: usize = (self.cursor_position - 1) as usize
///   codepoints.remove(pos)
///
/// Generated (wrong): codepoints.remove(&pos);
/// Expected:          codepoints.remove(pos);
use std::process::Command;

#[test]
fn test_vec_remove_usize_no_ref() {
    let source = r#"
fn main() {
    let mut items = vec![10, 20, 30, 40, 50]
    let pos: usize = 2
    items.remove(pos)
    println("{}", items.len())
}
"#;

    let _tmp = tempfile::tempdir().unwrap();
    let temp_dir = _tmp.path();
    let test_id = format!(
        "wj_test_{}",
        std::time::SystemTime::now()
            .duration_since(std::time::UNIX_EPOCH)
            .unwrap()
            .as_nanos()
    );
    let output_dir = temp_dir.join(&test_id);

    let source_file = temp_dir.join("test_vec_remove.wj");
    std::fs::write(&source_file, source).unwrap();

    let wj = env!("CARGO_BIN_EXE_wj");
    let output = Command::new(wj)
        .arg("build")
        .arg(source_file.to_str().unwrap())
        .arg("--output")
        .arg(output_dir.to_str().unwrap())
        .arg("--no-cargo")
        .output()
        .expect("Failed to run wj");

    assert!(
        output.status.success(),
        "wj build failed: {}",
        String::from_utf8_lossy(&output.stderr)
    );

    let rs_file = output_dir.join("test_vec_remove.rs");
    assert!(rs_file.exists(), "Generated .rs file not found");

    let generated = std::fs::read_to_string(&rs_file).unwrap();

    // Vec::remove takes owned usize, NOT &usize
    assert!(
        !generated.contains("items.remove(&pos)"),
        "BUG: Vec.remove adds & to usize index!\nGenerated:\n{}",
        generated
    );

    // Should be plain items.remove(pos)
    assert!(
        generated.contains("items.remove(pos)"),
        "Expected items.remove(pos) without &.\nGenerated:\n{}",
        generated
    );
}

#[test]
fn test_vec_remove_with_expression_no_ref() {
    let source = r#"
struct TextInput {
    text: string,
    cursor_position: i32,
}

impl TextInput {
    pub fn delete_char(self) {
        if self.cursor_position > 0 {
            let pos: usize = (self.cursor_position - 1) as usize
            let mut codepoints = self.text.chars().collect::<Vec<char>>()
            if pos < codepoints.len() {
                codepoints.remove(pos)
                self.cursor_position = self.cursor_position - 1
            }
        }
    }
}

fn main() {
    let mut input = TextInput { text: "hello", cursor_position: 3 }
    input.delete_char()
    println("{}", input.cursor_position)
}
"#;

    let _tmp = tempfile::tempdir().unwrap();
    let temp_dir = _tmp.path();
    let test_id = format!(
        "wj_test_{}",
        std::time::SystemTime::now()
            .duration_since(std::time::UNIX_EPOCH)
            .unwrap()
            .as_nanos()
    );
    let output_dir = temp_dir.join(&test_id);

    let source_file = temp_dir.join("test_vec_remove_expr.wj");
    std::fs::write(&source_file, source).unwrap();

    let wj = env!("CARGO_BIN_EXE_wj");
    let output = Command::new(wj)
        .arg("build")
        .arg(source_file.to_str().unwrap())
        .arg("--output")
        .arg(output_dir.to_str().unwrap())
        .arg("--no-cargo")
        .output()
        .expect("Failed to run wj");

    assert!(
        output.status.success(),
        "wj build failed: {}",
        String::from_utf8_lossy(&output.stderr)
    );

    let rs_file = output_dir.join("test_vec_remove_expr.rs");
    assert!(rs_file.exists(), "Generated .rs file not found");

    let generated = std::fs::read_to_string(&rs_file).unwrap();

    // Vec::remove takes owned usize, NOT &usize
    assert!(
        !generated.contains("codepoints.remove(&pos)"),
        "BUG: Vec.remove adds & to usize index!\nGenerated:\n{}",
        generated
    );

    assert!(
        generated.contains("codepoints.remove(pos)"),
        "Expected codepoints.remove(pos) without &.\nGenerated:\n{}",
        generated
    );
}