logicrs 0.6.1

Rust library for logic expression
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
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170

use std::{
    fmt::{self, Debug, Display, Write},
    ops::{BitAnd, BitOr, Deref, DerefMut, Not},
};

#[derive(Clone, Copy, PartialEq, Eq)]
pub struct Lbool(pub u8);

impl Lbool {
    pub const FALSE: Lbool = Lbool(0);
    pub const TRUE: Lbool = Lbool(1);
    pub const NONE: Lbool = Lbool(2);

    #[inline]
    pub fn is_true(self) -> bool {
        self == Self::TRUE
    }

    #[inline]
    pub fn is_false(self) -> bool {
        self == Self::FALSE
    }

    #[inline]
    pub fn is_none(self) -> bool {
        self.0 & 2 != 0
    }

    #[inline]
    pub fn not_if(self, x: bool) -> Self {
        if x { !self } else { self }
    }
}

impl From<bool> for Lbool {
    #[inline]
    fn from(value: bool) -> Self {
        Self(value as u8)
    }
}

impl From<Lbool> for Option<bool> {
    #[inline]
    fn from(val: Lbool) -> Self {
        match val {
            Lbool::TRUE => Some(true),
            Lbool::FALSE => Some(false),
            _ => None,
        }
    }
}

impl Default for Lbool {
    #[inline]
    fn default() -> Self {
        Self::NONE
    }
}

impl Debug for Lbool {
    #[inline]
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        let field = match *self {
            Lbool::TRUE => '1',
            Lbool::FALSE => '0',
            _ => 'X',
        };
        f.write_char(field)
    }
}

impl Display for Lbool {
    #[inline]
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        write!(f, "{self:?}")
    }
}

impl Not for Lbool {
    type Output = Self;

    #[inline]
    fn not(self) -> Self::Output {
        Lbool(self.0 ^ 1)
    }
}

impl BitAnd for Lbool {
    type Output = Lbool;

    #[inline]
    fn bitand(self, rhs: Self) -> Self::Output {
        if self.is_none() {
            if rhs.is_false() {
                Self::FALSE
            } else {
                Self::NONE
            }
        } else if rhs.is_none() {
            if self.is_false() {
                Self::FALSE
            } else {
                Self::NONE
            }
        } else {
            Self(self.0 & rhs.0)
        }
    }
}

impl BitOr for Lbool {
    type Output = Lbool;

    #[inline]
    fn bitor(self, rhs: Self) -> Self::Output {
        if self.is_none() {
            if rhs.is_true() {
                Self::TRUE
            } else {
                Self::NONE
            }
        } else if rhs.is_none() {
            if self.is_true() {
                Self::TRUE
            } else {
                Self::NONE
            }
        } else {
            Self(self.0 | rhs.0)
        }
    }
}

#[derive(Clone, Default, PartialEq, Eq)]
pub struct LboolVec {
    v: Vec<Lbool>,
}

impl Deref for LboolVec {
    type Target = Vec<Lbool>;

    #[inline]
    fn deref(&self) -> &Self::Target {
        &self.v
    }
}

impl DerefMut for LboolVec {
    #[inline]
    fn deref_mut(&mut self) -> &mut Self::Target {
        &mut self.v
    }
}

impl Debug for LboolVec {
    #[inline]
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        for lb in self.v.iter().rev() {
            Debug::fmt(lb, f)?;
        }
        Ok(())
    }
}

impl Display for LboolVec {
    #[inline]
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        write!(f, "{self:?}")
    }
}