[go: up one dir, main page]

arrow2 0.8.1

Unofficial implementation of Apache Arrow spec in safe Rust
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

use crate::datatypes::DataType;

use super::Scalar;

/// The [`Scalar`] implementation of a boolean.
#[derive(Debug, Clone)]
pub struct BooleanScalar {
    value: bool,
    is_valid: bool,
}

impl PartialEq for BooleanScalar {
    fn eq(&self, other: &Self) -> bool {
        self.is_valid == other.is_valid && ((!self.is_valid) | (self.value == other.value))
    }
}

impl BooleanScalar {
    /// Returns a new [`BooleanScalar`]
    #[inline]
    pub fn new(v: Option<bool>) -> Self {
        let is_valid = v.is_some();
        Self {
            value: v.unwrap_or_default(),
            is_valid,
        }
    }

    /// The value irrespectively of the validity
    #[inline]
    pub fn value(&self) -> bool {
        self.value
    }
}

impl Scalar for BooleanScalar {
    #[inline]
    fn as_any(&self) -> &dyn std::any::Any {
        self
    }

    #[inline]
    fn is_valid(&self) -> bool {
        self.is_valid
    }

    #[inline]
    fn data_type(&self) -> &DataType {
        &DataType::Boolean
    }
}

impl From<Option<bool>> for BooleanScalar {
    #[inline]
    fn from(v: Option<bool>) -> Self {
        Self::new(v)
    }
}