fef 0.2.3

Rust implementation of a parser of the FEF format
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

use crate::{
    common::traits::private::Sealed,
    v0::{
        expr::{
            error::NonMatchingExprError,
            traits::{EnumExpr, ExprObj},
            Expr,
        },
        raw::VariableLengthEnum,
        tokens::ExprToken,
    },
};

/// [Variable expression](https://github.com/jiricekcz/fef-specification/blob/main/expressions/Variable.md) in FEF.
#[derive(Debug, Clone, PartialEq, Eq, PartialOrd, Ord, Hash)]
pub struct ExprVariable<S: Sized> {
    _phantom: std::marker::PhantomData<S>,
    id: VariableLengthEnum,
}

impl<S: Sized> Sealed for ExprVariable<S> {}

impl<S: Sized> TryFrom<Expr<S>> for ExprVariable<S> {
    type Error = NonMatchingExprError;

    fn try_from(value: Expr<S>) -> Result<Self, Self::Error> {
        match value {
            Expr::Variable(v) => Ok(v),
            _ => Err(NonMatchingExprError {
                expected: vec![ExprToken::Variable],
                found: value.token(),
            }),
        }
    }
}

impl<S: Sized> Into<Expr<S>> for ExprVariable<S> {
    fn into(self) -> Expr<S> {
        Expr::Variable(self)
    }
}

impl<S: Sized> ExprObj<S> for ExprVariable<S> {
    fn token(&self) -> ExprToken {
        ExprToken::Variable
    }
}

impl<S: Sized> From<VariableLengthEnum> for ExprVariable<S> {
    fn from(id: VariableLengthEnum) -> Self {
        Self {
            _phantom: std::marker::PhantomData,
            id,
        }
    }
}

impl<S: Sized> Into<VariableLengthEnum> for ExprVariable<S> {
    fn into(self) -> VariableLengthEnum {
        self.id
    }
}

impl<S: Sized> EnumExpr<S> for ExprVariable<S> {
    fn variable_length_enum(&self) -> &VariableLengthEnum {
        &self.id
    }
}

/// Converts to a reference to the variable length enum specifying the variable id.
impl<S: Sized> AsRef<VariableLengthEnum> for ExprVariable<S> {
    fn as_ref(&self) -> &VariableLengthEnum {
        &self.id
    }
}

/// Converts to a mutable reference to the variable length enum specifying the variable id.
impl<S: Sized> AsMut<VariableLengthEnum> for ExprVariable<S> {
    fn as_mut(&mut self) -> &mut VariableLengthEnum {
        &mut self.id
    }
}