range_checker 0.2.2

derive-macro crate aimed to provide declarative bounds checking and filtering for structure.
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


# Expand Example

## Check

```rust
impl ::range_checker::Check for TestStruct {
    fn check(&self) -> Result<(), ()> {
        if !((..=5).contains(&self.v0)
            || (20..).contains(&self.v0) && (|x| x % 2 != 0)(&self.v0))
        {
            return Err(());
        }
        if !((-1.0..=5.0).contains(&self.v1)) {
            return Err(());
        }
        if !((|&x| x > 8.0)(&self.v2)) {
            return Err(());
        }
        if !((..-1).contains(&self.v3)) {
            return Err(());
        }
        Ok(())
    }
    fn check_with_fallback(&mut self) -> Result<(), ()> {
        if !((..=5).contains(&self.v0)
            || (20..).contains(&self.v0) && (|x| x % 2 != 0)(&self.v0))
        {
            self.v0 = 255;
        }
        if !((-1.0..=5.0).contains(&self.v1)) {
            self.v1 = 3.1;
        }
        if !((|&x| x > 8.0)(&self.v2)) {
            self.v2 = 9.9;
        }
        if !((..-1).contains(&self.v3)) {
            self
                .v3 = (|x| {
                {
                    ::std::io::_print(
                        ::core::fmt::Arguments::new_v1(
                            &["test fallback closure.\n"],
                            &[],
                        ),
                    );
                };
                x - 5
            })(&self.v3);
        }
        Ok(())
    }
}
```

## CheckVerbose

```rust
impl range_checker::CheckVerbose for TestStruct {
    fn check(&self) -> Result<(), Vec<range_checker::Error>> {
        let mut err_vec = ::alloc::vec::Vec::new();
        if !((..=5).contains(&self.v0) || (20..).contains(&self.v0)) {
            err_vec
                .push(range_checker::Error::CheckFailed {
                    ident: "v0".to_owned(),
                    value: (self.v0).to_string(),
                    check_statement: "(..= 5).contains(& self.v0) || (20 ..).contains(& self.v0)"
                        .to_owned(),
                })
        }
        if !((-1.0..=5.0).contains(&self.v1)) {
            err_vec
                .push(range_checker::Error::CheckFailed {
                    ident: "v1".to_owned(),
                    value: (self.v1).to_string(),
                    check_statement: "(- 1.0 ..= 5.0).contains(& self.v1)".to_owned(),
                })
        }
        if !((|&x| x > 8.0)(&self.v2)) {
            err_vec
                .push(range_checker::Error::CheckFailed {
                    ident: "v2".to_owned(),
                    value: (self.v2).to_string(),
                    check_statement: "(| & x | x > 8.0) (& self.v2)".to_owned(),
                })
        }
        if !((..-1).contains(&self.v3)) {
            err_vec
                .push(range_checker::Error::CheckFailed {
                    ident: "v3".to_owned(),
                    value: (self.v3).to_string(),
                    check_statement: "(.. - 1).contains(& self.v3)".to_owned(),
                })
        }
        if err_vec.is_empty() { Ok(()) } else { Err(err_vec) }
    }
    fn check_with_fallback(
        &mut self,
    ) -> Result<Vec<range_checker::Error>, Vec<range_checker::Error>> {
        let mut ret_vec = ::alloc::vec::Vec::new();
        let mut failed = false;
        if !((..=5).contains(&self.v0) || (20..).contains(&self.v0)) {
            let fallback = 255;
            ret_vec
                .push(range_checker::Error::Fallback {
                    ident: "v0".to_owned(),
                    value: (self.v0).to_string(),
                    check_statement: "(..= 5).contains(& self.v0) || (20 ..).contains(& self.v0)"
                        .to_owned(),
                    fallback: fallback.to_string(),
                });
            self.v0 = fallback;
        }
        if !((-1.0..=5.0).contains(&self.v1)) {
            let fallback = 3.1;
            ret_vec
                .push(range_checker::Error::Fallback {
                    ident: "v1".to_owned(),
                    value: (self.v1).to_string(),
                    check_statement: "(- 1.0 ..= 5.0).contains(& self.v1)".to_owned(),
                    fallback: fallback.to_string(),
                });
            self.v1 = fallback;
        }
        if !((|&x| x > 8.0)(&self.v2)) {
            let fallback = 9.9;
            ret_vec
                .push(range_checker::Error::Fallback {
                    ident: "v2".to_owned(),
                    value: (self.v2).to_string(),
                    check_statement: "(| & x | x > 8.0) (& self.v2)".to_owned(),
                    fallback: fallback.to_string(),
                });
            self.v2 = fallback;
        }
        if !((..-1).contains(&self.v3)) {
            let fallback = (|x| {
                {
                    ::std::io::_print(
                        ::core::fmt::Arguments::new_v1(
                            &["test fallback closure.\n"],
                            &[],
                        ),
                    );
                };
                x - 5
            })(&self.v3);
            ret_vec
                .push(range_checker::Error::Fallback {
                    ident: "v3".to_owned(),
                    value: (self.v3).to_string(),
                    check_statement: "(.. - 1).contains(& self.v3)".to_owned(),
                    fallback: fallback.to_string(),
                });
            self.v3 = fallback;
        }
        if !failed { Ok(ret_vec) } else { Err(ret_vec) }
    }
}
```