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

use crate::any::{Any, AnyTypeInfo};
use crate::database::HasValueRef;
use crate::value::{Value, ValueRef};
use std::borrow::Cow;

#[cfg(feature = "postgres")]
use crate::postgres::{PgValue, PgValueRef};

#[cfg(feature = "mysql")]
use crate::mysql::{MySqlValue, MySqlValueRef};

#[cfg(feature = "sqlite")]
use crate::sqlite::{SqliteValue, SqliteValueRef};

#[cfg(feature = "mssql")]
use crate::mssql::{MssqlValue, MssqlValueRef};

pub struct AnyValue {
    pub(crate) kind: AnyValueKind,
    pub(crate) type_info: AnyTypeInfo,
}

pub(crate) enum AnyValueKind {
    #[cfg(feature = "postgres")]
    Postgres(PgValue),

    #[cfg(feature = "mysql")]
    MySql(MySqlValue),

    #[cfg(feature = "sqlite")]
    Sqlite(SqliteValue),

    #[cfg(feature = "mssql")]
    Mssql(MssqlValue),
}

pub struct AnyValueRef<'r> {
    pub(crate) kind: AnyValueRefKind<'r>,
    pub(crate) type_info: AnyTypeInfo,
}

pub(crate) enum AnyValueRefKind<'r> {
    #[cfg(feature = "postgres")]
    Postgres(PgValueRef<'r>),

    #[cfg(feature = "mysql")]
    MySql(MySqlValueRef<'r>),

    #[cfg(feature = "sqlite")]
    Sqlite(SqliteValueRef<'r>),

    #[cfg(feature = "mssql")]
    Mssql(MssqlValueRef<'r>),
}

impl Value for AnyValue {
    type Database = Any;

    fn as_ref(&self) -> <Self::Database as HasValueRef<'_>>::ValueRef {
        match &self.kind {
            #[cfg(feature = "postgres")]
            AnyValueKind::Postgres(value) => value.as_ref().into(),

            #[cfg(feature = "mysql")]
            AnyValueKind::MySql(value) => value.as_ref().into(),

            #[cfg(feature = "sqlite")]
            AnyValueKind::Sqlite(value) => value.as_ref().into(),

            #[cfg(feature = "mssql")]
            AnyValueKind::Mssql(value) => value.as_ref().into(),
        }
    }

    fn type_info(&self) -> Cow<'_, AnyTypeInfo> {
        Cow::Borrowed(&self.type_info)
    }

    fn is_null(&self) -> bool {
        match &self.kind {
            #[cfg(feature = "postgres")]
            AnyValueKind::Postgres(value) => value.is_null(),

            #[cfg(feature = "mysql")]
            AnyValueKind::MySql(value) => value.is_null(),

            #[cfg(feature = "sqlite")]
            AnyValueKind::Sqlite(value) => value.is_null(),

            #[cfg(feature = "mssql")]
            AnyValueKind::Mssql(value) => value.is_null(),
        }
    }
}

impl<'r> ValueRef<'r> for AnyValueRef<'r> {
    type Database = Any;

    fn to_owned(&self) -> AnyValue {
        match &self.kind {
            #[cfg(feature = "postgres")]
            AnyValueRefKind::Postgres(value) => ValueRef::to_owned(value).into(),

            #[cfg(feature = "mysql")]
            AnyValueRefKind::MySql(value) => ValueRef::to_owned(value).into(),

            #[cfg(feature = "sqlite")]
            AnyValueRefKind::Sqlite(value) => ValueRef::to_owned(value).into(),

            #[cfg(feature = "mssql")]
            AnyValueRefKind::Mssql(value) => ValueRef::to_owned(value).into(),
        }
    }

    fn type_info(&self) -> Cow<'_, AnyTypeInfo> {
        Cow::Borrowed(&self.type_info)
    }

    fn is_null(&self) -> bool {
        match &self.kind {
            #[cfg(feature = "postgres")]
            AnyValueRefKind::Postgres(value) => value.is_null(),

            #[cfg(feature = "mysql")]
            AnyValueRefKind::MySql(value) => value.is_null(),

            #[cfg(feature = "sqlite")]
            AnyValueRefKind::Sqlite(value) => value.is_null(),

            #[cfg(feature = "mssql")]
            AnyValueRefKind::Mssql(value) => value.is_null(),
        }
    }
}