simple_parse 0.6.3

A declarative converter for Rust type to and from binary
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
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239

use std::io::Cursor;
use std::mem::size_of;

use crate::*;

const NUM_ITEMS: usize = 3;

#[macro_use]
macro_rules! test_primitive {
    // Defaults to using Self::STATIC_SIZE
    ($typ:ty, $new:ident $(, $ref_test:ident)?) => {{
        let mut ctx = SpCtx::default();
        let mut i = 0;
        let mut empty: [u8; 0] = [0; 0];
        let mut tmp: [u8; size_of::<$typ>() * NUM_ITEMS] = [0; size_of::<$typ>() * NUM_ITEMS];

        println!("<{}>", stringify!($typ));

        println!("\tEmpty Slice");
        assert_eq!(<$typ>::inner_from_reader(&mut Cursor::new(&empty), &mut ctx), Err(SpError::NotEnoughSpace));
        assert_eq!(<$typ>::inner_from_slice(&mut Cursor::new(&empty), &mut ctx), Err(SpError::NotEnoughSpace));
        assert_eq!(<$typ>::inner_from_mut_slice(&mut Cursor::new(&mut empty), &mut ctx), Err(SpError::NotEnoughSpace));

        println!("\tOne byte short");
        assert_eq!(<$typ>::inner_from_reader(&mut Cursor::new(&tmp[..size_of::<$typ>()-1]), &mut ctx), Err(SpError::NotEnoughSpace));
        assert_eq!(<$typ>::inner_from_slice(&mut Cursor::new(&tmp[..size_of::<$typ>()-1]), &mut ctx), Err(SpError::NotEnoughSpace));
        assert_eq!(<$typ>::inner_from_mut_slice(&mut Cursor::new(&mut tmp[..size_of::<$typ>()-1]), &mut ctx), Err(SpError::NotEnoughSpace));

        println!("\tOne byte extra");
        let mut cur = Cursor::new(&tmp[..size_of::<$typ>()+1]);
        assert_eq!(<$typ>::inner_from_reader(&mut cur, &mut ctx).unwrap(), $new(0));
        assert_eq!(cur.position() as usize, size_of::<$typ>());
        let mut cur = Cursor::new(&tmp[..size_of::<$typ>()+1]);
        assert_eq!(<$typ>::inner_from_slice(&mut cur, &mut ctx).unwrap(), $new(0));
        assert_eq!(cur.position() as usize, size_of::<$typ>());
        let mut cur = Cursor::new(&mut tmp[..size_of::<$typ>()+1]);
        assert_eq!(<$typ>::inner_from_mut_slice(&mut cur, &mut ctx).unwrap(), $new(0));
        assert_eq!(cur.position() as usize, size_of::<$typ>());

        println!("\tLittle Endian");
        ctx.is_little_endian = true;
        tmp[0] = 1;
        assert_eq!(<$typ>::inner_from_reader(&mut Cursor::new(&tmp), &mut ctx).unwrap(), $new(1));
        assert_eq!(<$typ>::inner_from_slice(&mut Cursor::new(&tmp), &mut ctx).unwrap(), $new(1));
        assert_eq!(<$typ>::inner_from_mut_slice(&mut Cursor::new(&mut tmp), &mut ctx).unwrap(), $new(1));

        println!("\tBig Endian");
        tmp[0] = 0;
        tmp[size_of::<$typ>()-1] = 1;
        ctx.is_little_endian = false;
        assert_eq!(<$typ>::inner_from_reader(&mut Cursor::new(&tmp), &mut ctx).unwrap(), $new(1));
        assert_eq!(<$typ>::inner_from_slice(&mut Cursor::new(&tmp), &mut ctx).unwrap(), $new(1));
        assert_eq!(<$typ>::inner_from_mut_slice(&mut Cursor::new(&mut tmp), &mut ctx).unwrap(), $new(1));

        println!("\t{} * {}", stringify!($typ), NUM_ITEMS);
        ctx.is_little_endian = true;
        let mut cur = Cursor::new(&tmp[..]);
        while let Ok(_) = <$typ>::inner_from_reader(&mut cur, &mut ctx) {
            i += 1;
        }
        assert_eq!(i, NUM_ITEMS);
        assert_eq!(cur.position() as usize, size_of::<$typ>() * NUM_ITEMS);
        i = 0;
        let mut cur = Cursor::new(&tmp[..]);
        while let Ok(_) = <$typ>::inner_from_slice(&mut cur, &mut ctx) {
            i += 1;
        }
        assert_eq!(i, NUM_ITEMS);
        assert_eq!(cur.position() as usize, size_of::<$typ>() * NUM_ITEMS);
        i = 0;
        let mut cur = Cursor::new(&mut tmp[..]);
        while let Ok(_) = <$typ>::inner_from_mut_slice(&mut cur, &mut ctx) {
            i += 1;
        }
        assert_eq!(i, NUM_ITEMS);
        assert_eq!(cur.position() as usize, size_of::<$typ>() * NUM_ITEMS);

        $($ref_test!($typ, $new);)?
    }};
}

#[macro_use]
macro_rules! test_references {
    // Defaults to using Self::STATIC_SIZE
    ($typ:ty, $new:ident) => {{
        let mut ctx = SpCtx::default();
        let mut tmp: [u8; size_of::<$typ>() * NUM_ITEMS] = [0; size_of::<$typ>() * NUM_ITEMS];

        tmp[0] = 2;

        println!("\t&{}", stringify!($typ));
        // References
        let mut cur = Cursor::new(&tmp[..]);
        assert_eq!(
            *<&$typ>::inner_from_slice(&mut cur, &mut ctx).unwrap(),
            $new(2)
        );
        assert_eq!(
            *<&$typ>::inner_from_slice(&mut cur, &mut ctx).unwrap(),
            $new(0)
        );
        let mut cur = Cursor::new(&mut tmp[..]);
        assert_eq!(
            *<&$typ>::inner_from_mut_slice(&mut cur, &mut ctx).unwrap(),
            $new(2)
        );
        assert_eq!(
            *<&$typ>::inner_from_mut_slice(&mut cur, &mut ctx).unwrap(),
            $new(0)
        );
        let mut cur = Cursor::new(&mut tmp[..]);
        assert_eq!(
            *<&mut $typ>::inner_from_mut_slice(&mut cur, &mut ctx).unwrap(),
            $new(2)
        );
        assert_eq!(
            *<&mut $typ>::inner_from_mut_slice(&mut cur, &mut ctx).unwrap(),
            $new(0)
        );

        // Slice
        println!("\t&[{}] with count", stringify!($typ));

        ctx.count = Some(0);
        let mut cur = Cursor::new(&tmp[..]);
        assert_eq!(
            <&[$typ]>::inner_from_slice(&mut cur, &mut ctx)
                .unwrap()
                .len(),
            0
        );
        assert_eq!(cur.position(), 0);
        let mut cur = Cursor::new(&mut tmp[..]);
        assert_eq!(
            <&[$typ]>::inner_from_mut_slice(&mut cur, &mut ctx)
                .unwrap()
                .len(),
            0
        );
        assert_eq!(cur.position(), 0);

        ctx.count = Some(NUM_ITEMS);
        let mut cur = Cursor::new(&tmp[..]);
        assert_eq!(
            <&[$typ]>::inner_from_slice(&mut cur, &mut ctx)
                .unwrap()
                .len(),
            NUM_ITEMS
        );
        assert_eq!(cur.position() as usize, size_of::<$typ>() * NUM_ITEMS);
        let mut cur = Cursor::new(&mut tmp[..]);
        assert_eq!(
            <&[$typ]>::inner_from_mut_slice(&mut cur, &mut ctx)
                .unwrap()
                .len(),
            NUM_ITEMS
        );
        assert_eq!(cur.position() as usize, size_of::<$typ>() * NUM_ITEMS);

        ctx.count = Some(NUM_ITEMS - 1);
        let mut cur = Cursor::new(&tmp[..]);
        assert_eq!(
            <&[$typ]>::inner_from_slice(&mut cur, &mut ctx)
                .unwrap()
                .len(),
            NUM_ITEMS - 1
        );
        assert_eq!(cur.position() as usize, size_of::<$typ>() * (NUM_ITEMS - 1));
        let mut cur = Cursor::new(&mut tmp[..]);
        assert_eq!(
            <&[$typ]>::inner_from_mut_slice(&mut cur, &mut ctx)
                .unwrap()
                .len(),
            NUM_ITEMS - 1
        );
        assert_eq!(cur.position() as usize, size_of::<$typ>() * (NUM_ITEMS - 1));

        ctx.count = Some(NUM_ITEMS + 1);
        let mut cur = Cursor::new(&tmp[..]);
        assert_eq!(
            <&[$typ]>::inner_from_slice(&mut cur, &mut ctx),
            Err(SpError::NotEnoughSpace)
        );
        let mut cur = Cursor::new(&mut tmp[..]);
        assert_eq!(
            <&[$typ]>::inner_from_mut_slice(&mut cur, &mut ctx),
            Err(SpError::NotEnoughSpace)
        );
    }};
}

fn new_primitive<T>(val: T) -> T {
    val
}

fn new_float32(val: usize) -> f32 {
    if val == 1 {
        0.000000000000000000000000000000000000000000001
    } else if val == 2 {
        0.000000000000000000000000000000000000000000003
    } else {
        0.0
    }
}

fn new_float64(val: usize) -> f64 {
    if val == 1 {
        0.000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000005
    } else if val == 2 {
        0.00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001
    } else {
        0.0
    }
}

fn new_bool(val: usize) -> bool {
    val > 0
}

#[test]
fn primitive_types() {
    test_primitive!(u8, new_primitive, test_references);
    test_primitive!(u16, new_primitive, test_references);
    test_primitive!(u32, new_primitive, test_references);
    test_primitive!(u64, new_primitive, test_references);
    test_primitive!(u128, new_primitive, test_references);
    test_primitive!(usize, new_primitive, test_references);
    test_primitive!(i8, new_primitive, test_references);
    test_primitive!(i16, new_primitive, test_references);
    test_primitive!(i32, new_primitive, test_references);
    test_primitive!(i64, new_primitive, test_references);
    test_primitive!(i128, new_primitive, test_references);
    test_primitive!(isize, new_primitive, test_references);

    test_primitive!(f32, new_float32, test_references);
    test_primitive!(f64, new_float64, test_references);

    test_primitive!(bool, new_bool);
}