rclua 0.0.2

Execute Lua in Rust.
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

pub extern crate libc;
use libc::c_char;

#[link(name = "clua", kind = "static")]
extern "C" {
    /// Evaluate Lua code for Lua 5.4.6
    fn eval_5_4_6(code: *const c_char);
}

/// Lua version
///
/// Default version is 5.4.6
#[derive(Debug, Default, PartialEq, Eq)]
pub enum Version {
    #[default]
    V5_4_6,
}

impl Version {
    /// Get the version as a &str (e.g. "5.4.6")
    pub fn as_str(&self) -> &str {
        match self {
            Version::V5_4_6 => "5.4.6",
        }
    }
}

impl ToString for Version {
    /// Get the version as a String (e.g. "5.4.6")
    fn to_string(&self) -> String {
        self.as_str().to_string()
    }
}

/// Evaluate Lua code.
///
/// This function takes a string of Lua code and a version of Lua, and evaluates the code using the specified version of Lua.
///
/// # Arguments
///
/// * `code` - A string slice containing the Lua code to be evaluated.
/// * `version` - The version of Lua to use for evaluating the code.
///
/// # Example
///
/// ```
/// use rclua::{eval, Version};
///
/// let code = "print('Hello, world!')\0";
///
/// let version = Version::V5_4_6;
///
/// eval(code, version);
///
/// ```
pub fn eval(code: &str, version: Version) {
    let code = code.to_string();

    let code = if code.ends_with('\0') {
        code
    } else {
        code + "\0"
    };

    unsafe {
        match version {
            Version::V5_4_6 => eval_5_4_6(code.as_ptr() as *const c_char),
        }
    }
}

#[test]
fn test_version() {
    assert_eq!(Version::V5_4_6.as_str(), "5.4.6");

    assert_eq!(Version::V5_4_6.to_string(), "5.4.6");

    assert_eq!(Version::default(), Version::V5_4_6);
}

#[test]
fn test_eval() {
    eval("print('Hello, world!')\0", Version::default());

    eval("print('Hello, world!')\0", Version::V5_4_6);
}

#[test]
fn test_eval_not_eof() {
    eval("print('Hello, world!')", Version::default());

    eval("print('Hello, world!')", Version::V5_4_6);
}

#[test]
fn test_clua_eval_5_4_6() {
    unsafe {
        eval_5_4_6("print('Hello, world!')\0".as_ptr() as *const c_char);
    }
}