litex-lang 0.9.82-beta

A simple formal proof language and verifier, learnable in 2 hours
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

use crate::prelude::*;
use std::fmt;

#[derive(Clone)]
pub struct ByFnSetAsSetStmt {
    pub func: Obj,
    pub fn_set: FnSet,
    pub line_file: LineFile,
}

impl fmt::Display for ByFnSetAsSetStmt {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        write!(
            f,
            "{} {} {} {} {}{} {} {}{} {}",
            BY, FN_LOWER_CASE, SET, AS, SET, COLON, self.func, FACT_PREFIX, IN, self.fn_set
        )
    }
}

impl ByFnSetAsSetStmt {
    pub fn new(func: Obj, fn_set: FnSet, line_file: LineFile) -> Self {
        ByFnSetAsSetStmt {
            func,
            fn_set,
            line_file,
        }
    }
}

// view fn set as a subset of a cartesian product set
#[derive(Clone)]
pub struct ByFnAsSetStmt {
    pub function: Obj,
    pub line_file: LineFile,
}

/// Introduce facts from the built-in ordered-pair / tuple encoding.
#[derive(Clone)]
pub struct ByTupleAsSetStmt {
    pub obj: Obj,
    pub line_file: LineFile,
}

impl fmt::Display for ByFnAsSetStmt {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        write!(
            f,
            "{} {} {} {}{} {}",
            BY, FN_LOWER_CASE, AS, SET, COLON, self.function
        )
    }
}

impl ByFnAsSetStmt {
    pub fn new(function: Obj, line_file: LineFile) -> Self {
        ByFnAsSetStmt {
            function,
            line_file,
        }
    }
}

impl fmt::Display for ByTupleAsSetStmt {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        write!(f, "{} {} {} {}{} {}", BY, TUPLE, AS, SET, COLON, self.obj)
    }
}

impl ByTupleAsSetStmt {
    pub fn new(obj: Obj, line_file: LineFile) -> Self {
        ByTupleAsSetStmt { obj, line_file }
    }
}