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
use super::{Null, Type};

/// Owning [dynamic type value](http://sqlite.org/datatype3.html). Value's type is typically
/// dictated by SQLite (not by the caller).
///
/// See [`ValueRef`](crate::types::ValueRef) for a non-owning dynamic type
/// value.
#[derive(Clone, Debug, PartialEq)]
pub enum Value {
    /// The value is a `NULL` value.
    Null,
    /// The value is a signed integer.
    Integer(i64),
    /// The value is a floating point number.
    Real(f64),
    /// The value is a text string.
    Text(String),
    /// The value is a blob of data
    Blob(Vec<u8>),
}

impl From<Null> for Value {
    #[inline]
    fn from(_: Null) -> Value {
        Value::Null
    }
}

impl From<bool> for Value {
    #[inline]
    fn from(i: bool) -> Value {
        Value::Integer(i as i64)
    }
}

impl From<isize> for Value {
    #[inline]
    fn from(i: isize) -> Value {
        Value::Integer(i as i64)
    }
}

#[cfg(feature = "i128_blob")]
#[cfg_attr(docsrs, doc(cfg(feature = "i128_blob")))]
impl From<i128> for Value {
    #[inline]
    fn from(i: i128) -> Value {
        // We store these biased (e.g. with the most significant bit flipped)
        // so that comparisons with negative numbers work properly.
        Value::Blob(i128::to_be_bytes(i ^ (1_i128 << 127)).to_vec())
    }
}

#[cfg(feature = "uuid")]
#[cfg_attr(docsrs, doc(cfg(feature = "uuid")))]
impl From<uuid::Uuid> for Value {
    #[inline]
    fn from(id: uuid::Uuid) -> Value {
        Value::Blob(id.as_bytes().to_vec())
    }
}

macro_rules! from_i64(
    ($t:ty) => (
        impl From<$t> for Value {
            #[inline]
            fn from(i: $t) -> Value {
                Value::Integer(i64::from(i))
            }
        }
    )
);

from_i64!(i8);
from_i64!(i16);
from_i64!(i32);
from_i64!(u8);
from_i64!(u16);
from_i64!(u32);

impl From<i64> for Value {
    #[inline]
    fn from(i: i64) -> Value {
        Value::Integer(i)
    }
}

impl From<f32> for Value {
    #[inline]
    fn from(f: f32) -> Value {
        Value::Real(f.into())
    }
}

impl From<f64> for Value {
    #[inline]
    fn from(f: f64) -> Value {
        Value::Real(f)
    }
}

impl From<String> for Value {
    #[inline]
    fn from(s: String) -> Value {
        Value::Text(s)
    }
}

impl From<Vec<u8>> for Value {
    #[inline]
    fn from(v: Vec<u8>) -> Value {
        Value::Blob(v)
    }
}

impl<T> From<Option<T>> for Value
where
    T: Into<Value>,
{
    #[inline]
    fn from(v: Option<T>) -> Value {
        match v {
            Some(x) => x.into(),
            None => Value::Null,
        }
    }
}

impl Value {
    /// Returns SQLite fundamental datatype.
    #[inline]
    #[must_use]
    pub fn data_type(&self) -> Type {
        match *self {
            Value::Null => Type::Null,
            Value::Integer(_) => Type::Integer,
            Value::Real(_) => Type::Real,
            Value::Text(_) => Type::Text,
            Value::Blob(_) => Type::Blob,
        }
    }
}