shelly-shell 0.1.0

A Rust based Unix style shell with a typed and structured language syntax.
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


use std::{ cell::RefCell, collections::HashMap, rc::Rc };

use super::{ data::value::Value, text::location::Location };



pub enum Code
{
    Push,
    Execute,
    NewVariable,
    SetVariable,
    GetVariable,
    // Operand: [alias name, argument count]. Target and arguments are on the stack.
    NewAlias,
    ExportVariable,
    GlobFiles,
    ExpandArray,
    ExpandPath,
    InterpolateString,
    _EnterScope,
    _ExitScope,
    MathAdd,
    MathSubtract,
    MathMultiply,
    MathDivide,
    MathModulo
}


pub struct Instruction
{
    pub location: Option<Location>,
    pub code: Code,
    pub operand: Option<Value>
}


pub struct Function
{
    pub functions: FunctionBlockRef,

    pub arguments: Vec<String>,
    pub code: Vec<Instruction>
}


pub struct FunctionBlock
{
    pub parent: Option<FunctionBlockRef>,
    pub functions: HashMap<String, FunctionRef>
}


pub type FunctionBlockRef = Rc<RefCell<FunctionBlock>>;

pub type FunctionRef = Rc<Function>;