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
//! MySQL specific types

#[cfg(feature = "chrono")]
mod date_and_time;
#[cfg(feature = "serde_json")]
mod json;
mod numeric;
mod primitives;

use byteorder::WriteBytesExt;
use mysqlclient_sys as ffi;
use std::io::Write;
use std::os::raw as libc;

use crate::deserialize::{self, FromSql};
use crate::mysql::{Mysql, MysqlType, MysqlValue};
use crate::query_builder::QueryId;
use crate::serialize::{self, IsNull, Output, ToSql};
use crate::sql_types::ops::*;
use crate::sql_types::*;

// A internal helper type
// This type also exists in mysqlclient_sys
// but the definition changed over time
// to remain backward compatible with old mysqlclient_sys
// version we just have our own copy here
#[repr(C)]
#[derive(Debug, Clone, Copy)]
pub(crate) struct MYSQL_TIME {
    pub year: libc::c_uint,
    pub month: libc::c_uint,
    pub day: libc::c_uint,
    pub hour: libc::c_uint,
    pub minute: libc::c_uint,
    pub second: libc::c_uint,
    pub second_part: libc::c_ulong,
    pub neg: bool,
    pub time_type: ffi::enum_mysql_timestamp_type,
    pub time_zone_displacement: libc::c_int,
}

impl ToSql<TinyInt, Mysql> for i8 {
    fn to_sql<W: Write>(&self, out: &mut Output<W, Mysql>) -> serialize::Result {
        out.write_i8(*self).map(|_| IsNull::No).map_err(Into::into)
    }
}

impl FromSql<TinyInt, Mysql> for i8 {
    fn from_sql(value: MysqlValue<'_>) -> deserialize::Result<Self> {
        let bytes = value.as_bytes();
        Ok(bytes[0] as i8)
    }
}

/// Represents the MySQL unsigned type.
#[derive(Debug, Clone, Copy, Default, SqlType, QueryId)]
pub struct Unsigned<ST>(ST);

impl<T> Add for Unsigned<T>
where
    T: Add,
{
    type Rhs = Unsigned<T::Rhs>;
    type Output = Unsigned<T::Output>;
}

impl<T> Sub for Unsigned<T>
where
    T: Sub,
{
    type Rhs = Unsigned<T::Rhs>;
    type Output = Unsigned<T::Output>;
}

impl<T> Mul for Unsigned<T>
where
    T: Mul,
{
    type Rhs = Unsigned<T::Rhs>;
    type Output = Unsigned<T::Output>;
}

impl<T> Div for Unsigned<T>
where
    T: Div,
{
    type Rhs = Unsigned<T::Rhs>;
    type Output = Unsigned<T::Output>;
}

impl ToSql<Unsigned<TinyInt>, Mysql> for u8 {
    fn to_sql<W: Write>(&self, out: &mut Output<W, Mysql>) -> serialize::Result {
        ToSql::<TinyInt, Mysql>::to_sql(&(*self as i8), out)
    }
}

impl FromSql<Unsigned<TinyInt>, Mysql> for u8 {
    fn from_sql(bytes: MysqlValue<'_>) -> deserialize::Result<Self> {
        let signed: i8 = FromSql::<TinyInt, Mysql>::from_sql(bytes)?;
        Ok(signed as u8)
    }
}

impl ToSql<Unsigned<SmallInt>, Mysql> for u16 {
    fn to_sql<W: Write>(&self, out: &mut Output<W, Mysql>) -> serialize::Result {
        ToSql::<SmallInt, Mysql>::to_sql(&(*self as i16), out)
    }
}

impl FromSql<Unsigned<SmallInt>, Mysql> for u16 {
    fn from_sql(bytes: MysqlValue<'_>) -> deserialize::Result<Self> {
        let signed: i16 = FromSql::<SmallInt, Mysql>::from_sql(bytes)?;
        Ok(signed as u16)
    }
}

impl ToSql<Unsigned<Integer>, Mysql> for u32 {
    fn to_sql<W: Write>(&self, out: &mut Output<W, Mysql>) -> serialize::Result {
        ToSql::<Integer, Mysql>::to_sql(&(*self as i32), out)
    }
}

impl FromSql<Unsigned<Integer>, Mysql> for u32 {
    fn from_sql(bytes: MysqlValue<'_>) -> deserialize::Result<Self> {
        let signed: i32 = FromSql::<Integer, Mysql>::from_sql(bytes)?;
        Ok(signed as u32)
    }
}

impl ToSql<Unsigned<BigInt>, Mysql> for u64 {
    fn to_sql<W: Write>(&self, out: &mut Output<W, Mysql>) -> serialize::Result {
        ToSql::<BigInt, Mysql>::to_sql(&(*self as i64), out)
    }
}

impl FromSql<Unsigned<BigInt>, Mysql> for u64 {
    fn from_sql(bytes: MysqlValue<'_>) -> deserialize::Result<Self> {
        let signed: i64 = FromSql::<BigInt, Mysql>::from_sql(bytes)?;
        Ok(signed as u64)
    }
}

impl ToSql<Bool, Mysql> for bool {
    fn to_sql<W: Write>(&self, out: &mut Output<W, Mysql>) -> serialize::Result {
        let int_value = if *self { 1 } else { 0 };
        <i32 as ToSql<Integer, Mysql>>::to_sql(&int_value, out)
    }
}

impl FromSql<Bool, Mysql> for bool {
    fn from_sql(bytes: MysqlValue<'_>) -> deserialize::Result<Self> {
        Ok(bytes.as_bytes().iter().any(|x| *x != 0))
    }
}

impl HasSqlType<Unsigned<TinyInt>> for Mysql {
    fn metadata(_lookup: &()) -> MysqlType {
        MysqlType::UnsignedTiny
    }
}

impl HasSqlType<Unsigned<SmallInt>> for Mysql {
    fn metadata(_lookup: &()) -> MysqlType {
        MysqlType::UnsignedShort
    }
}

impl HasSqlType<Unsigned<Integer>> for Mysql {
    fn metadata(_lookup: &()) -> MysqlType {
        MysqlType::UnsignedLong
    }
}

impl HasSqlType<Unsigned<BigInt>> for Mysql {
    fn metadata(_lookup: &()) -> MysqlType {
        MysqlType::UnsignedLongLong
    }
}

/// Represents the MySQL datetime type.
///
/// ### [`ToSql`] impls
///
/// - [`chrono::NaiveDateTime`] with `feature = "chrono"`
///
/// ### [`FromSql`] impls
///
/// - [`chrono::NaiveDateTime`] with `feature = "chrono"`
///
/// [`ToSql`]: ../../serialize/trait.ToSql.html
/// [`FromSql`]: ../../deserialize/trait.FromSql.html
/// [`chrono::NaiveDateTime`]: ../../../chrono/naive/struct.NaiveDateTime.html
#[derive(Debug, Clone, Copy, Default, QueryId, SqlType)]
#[mysql_type = "DateTime"]
pub struct Datetime;