ruby_mri/
lib.rs

1extern crate libc;
2
3#[allow(dead_code, non_snake_case, non_upper_case_globals, non_camel_case_types)]
4mod ffi;
5
6use self::ffi::*;
7use std::ffi::CString;
8
9pub struct Value(VALUE);
10
11impl Value {
12    pub fn from(v: VALUE) -> Value {
13        Value(v)
14    }
15
16    pub fn is_nil(&self) -> bool {
17        NIL_P(self.0)
18    }
19
20    pub fn is_string(&self) -> bool {
21        RB_TYPE_P(self.0, T_STRING)
22    }
23
24    pub fn is_fixnum(&self) -> bool {
25        RB_TYPE_P(self.0, T_FIXNUM)
26    }
27
28    pub fn is_symbol(&self) -> bool {
29        RB_TYPE_P(self.0, T_SYMBOL)
30    }
31
32    pub fn is_float(&self) -> bool {
33        RB_TYPE_P(self.0, T_FLOAT)
34    }
35
36    pub fn is_object(&self) -> bool {
37        RB_TYPE_P(self.0, T_OBJECT)
38    }
39}
40
41pub struct RubyVM;
42
43impl RubyVM {
44    pub fn new() -> RubyVM {
45        unsafe {
46            ruby_init();
47        }
48
49        RubyVM
50    }
51
52    pub fn eval(s: &str) -> Result<Value, ()> {
53        let mut state = 0;
54        let s = try!(CString::new(s).map_err(|_| ()));
55        unsafe {
56            let result = rb_eval_string_protect(s.as_ptr(), &mut state);
57            if state != 0 {
58                return Err(());
59            }
60            Ok(Value::from(result))
61        }
62    }
63}
64
65impl Drop for RubyVM {
66    fn drop(&mut self) {
67        unsafe {
68            ruby_cleanup(0)
69        }
70    }
71}
72
73#[test]
74fn it_works() {
75    let _ = RubyVM::new();
76}
ruby_mri/lib.rs

ruby_mri/
lib.rs
