ttvm 0.2.9

Runtime and compiler infrastructure API for 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
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

use super::*;

pub type CallError = mtk::Error;

#[derive(Clone)]
pub struct Routine {
    data: Vec<i128>,
    env: *mut Env
}

impl Routine {
    pub fn new(env: &mut Env) -> Routine {
        Routine {
            data: Vec::new(),
            env
        }
    }

    pub fn from(env: &mut Env, data: Vec<i128>) -> Routine {
        Routine { data, env }
    }

    pub fn push(&mut self, byte: i128) {
        self.data.push(byte)
    }

    pub fn pop(&mut self) -> Option<i128> {
        self.data.pop()
    }

    pub fn get(&self, index: usize) -> Option<&i128> {
        self.data.get(index)
    }

    pub fn get_mut(&mut self, index: usize) -> Option<&mut i128> {
        self.data.get_mut(index)
    }

    pub unsafe fn call(&mut self, argv: Vec<usize>) -> Result<Result<usize, usize>, CallError> {
        let mut pc = 0;

        let mut c: i128 = 0;
        let mut e: i128 = 0;

        while pc < self.data.len() {
            if self.data[pc] == ALLOC {
                pc += 1;

                let l = match self.data.get(pc) {
                    Some(some) => *some,
                    None => return Err(CallError::from(format!("can not get from index {}", pc + 1)))
                };

                c = match (*self.env).alloc(l as usize) {
                    Ok(ok) => ok as i128,
                    Err(err) => return Err(err.clone())
                };
            } else if self.data[pc] == DEALLOC {
                pc += 1;

                let l = match self.data.get(pc) {
                    Some(some) => *some,
                    None => return Err(CallError::from(format!("can not get from index {}", pc + 1)))
                };

                c = match (*self.env).dealloc(l as usize) {
                    Ok(ok) => ok as i128,
                    Err(err) => return Err(err.clone())
                };
            } else if self.data[pc] == THROW {
                pc += 1;

                let l = match self.data.get(pc) {
                    Some(some) => *some,
                    None => return Err(CallError::from(format!("can not get from index {}", pc + 1)))
                };

                return Ok(Err(l as usize));
            } else if self.data[pc] == RETURN {
                pc += 1;

                let l = match self.data.get(pc) {
                    Some(some) => *some,
                    None => return Err(CallError::from(format!("can not get from index {}", pc + 1)))
                };

                return Ok(Ok(l as usize));
            } else if self.data[pc] == CALL {
                pc += 1;

                let l = match self.data.get(pc) {
                    Some(some) => *some,
                    None => return Err(CallError::from(format!("can not get from index {}", pc + 1)))
                };

                pc += 1;

                let r = match self.data.get(pc) {
                    Some(some) => *some,
                    None => return Err(CallError::from(format!("can not get from index {}", pc + 1)))
                };

                let mut argv_p: Vec<usize> = Vec::new();

                match (*self.env).get_mem().get(r as usize) {
                    Some(some) => {
                        match some {
                            Some(some) => {
                                for elem in some.iter() {
                                    argv_p.push(*elem as usize);
                                }
                            },
                            None => return Err(CallError::from(format!("memory on address {} was deallocated", r)))
                        }
                    },
                    None => return Err(CallError::from(format!("no memory was allocated on address {}", r)))
                };
                
                let x = (*self.env).call(l as usize, argv_p);

                match x {
                    Ok(ok) => {
                        match ok {
                            Ok(ok) => c = ok as i128,
                            Err(err) => e = err as i128
                        }
                    },
                    Err(err) => return Err(err)
                };
            } else if self.data[pc] == RETURN_C {
                return Ok(Ok(c as usize));
            } else {
                pc += 1;
            }
        }

        Ok(Ok(0))
    }
}