16935267080

Committed 13 Aug 2025 11:00AM UTC coverage: 24.312% (-63.3%) from 87.658%

Build # 16935267080

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Pull #4226

github

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web-flow

Commit Message

Merge 81b48c7fb into baa6ea202

Pull Request Pull Request #4226: Support converting TimestampTZ to and from duckdb

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30.59

/vortex-array/src/stats/precision.rs

// SPDX-License-Identifier: Apache-2.0
// SPDX-FileCopyrightText: Copyright the Vortex contributors

use std::fmt::{Debug, Display, Formatter};

use vortex_dtype::DType;
use vortex_error::VortexResult;
use vortex_scalar::{Scalar, ScalarValue};

use crate::stats::precision::Precision::{Exact, Inexact};

/// A statistic has a precision `Exact` or `Inexact`. This represents uncertainty in that value.
/// Exact values are computed, where can inexact values are likely inferred from compute functions.
///
/// Inexact statistics form a range of possible values that the statistic could be.
/// This is statistic specific, for max this will be an upper bound. Meaning that the actual max
/// in an array is guaranteed to be less than or equal to the inexact value, but equal to the exact
/// value.
#[derive(Debug, PartialEq, Eq)]
pub enum Precision<T> {
    Exact(T),
    Inexact(T),
}

impl<T> Clone for Precision<T>
where
    T: Clone,
{
    fn clone(&self) -> Self {
        match self {
            Exact(e) => Exact(e.clone()),
            Inexact(ie) => Inexact(ie.clone()),
        }
    }
}

impl<T> Precision<Option<T>> {
    /// Transpose the `Option<Precision<T>>` into `Option<Precision<T>>`.
    pub fn transpose(self) -> Option<Precision<T>> {
        match self {
            Exact(Some(x)) => Some(Exact(x)),
            Inexact(Some(x)) => Some(Inexact(x)),
            _ => None,
        }
    }
}

impl<T> Precision<T>
where
    T: Copy,
{
    pub fn to_inexact(&self) -> Self {
        match self {
            Exact(v) => Exact(*v),
            Inexact(v) => Inexact(*v),
        }
    }
}

impl<T> Precision<T> {
    /// Creates an exact value
    pub fn exact<S: Into<T>>(s: S) -> Precision<T> {
        Exact(s.into())
    }

    /// Creates an inexact value
    pub fn inexact<S: Into<T>>(s: S) -> Precision<T> {
        Inexact(s.into())
    }

    /// Pushed the ref into the Precision enum
    pub fn as_ref(&self) -> Precision<&T> {
        match self {
            Exact(val) => Exact(val),
            Inexact(val) => Inexact(val),
        }
    }

    /// Converts `self` into an inexact bound
    pub fn into_inexact(self) -> Self {
        match self {
            Exact(val) => Inexact(val),
            Inexact(_) => self,
        }
    }

    /// Returns the exact value from the bound, if that value is inexact, otherwise `None`.
    pub fn as_exact(self) -> Option<T> {
        match self {
            Exact(val) => Some(val),
            _ => None,
        }
    }

    /// Returns the exact value from the bound, if that value is inexact, otherwise `None`.
    pub fn as_inexact(self) -> Option<T> {
        match self {
            Inexact(val) => Some(val),
            _ => None,
        }
    }

    /// True iff self == Exact(_)
    pub fn is_exact(&self) -> bool {
        matches!(self, Exact(_))
    }

    /// Map the value of either precision value
    pub fn map<U, F: FnOnce(T) -> U>(self, f: F) -> Precision<U> {
        match self {
            Exact(value) => Exact(f(value)),
            Inexact(value) => Inexact(f(value)),
        }
    }

    /// Zip two `Precision` values into a tuple, keeping the inexactness if any.
    pub fn zip<U>(self, other: Precision<U>) -> Precision<(T, U)> {
        match (self, other) {
            (Exact(lhs), Exact(rhs)) => Exact((lhs, rhs)),
            (Inexact(lhs), Exact(rhs))
            | (Exact(lhs), Inexact(rhs))
            | (Inexact(lhs), Inexact(rhs)) => Inexact((lhs, rhs)),
        }
    }

    /// Similar to `map` but handles fucntions that can fail.
    pub fn try_map<U, F: FnOnce(T) -> VortexResult<U>>(self, f: F) -> VortexResult<Precision<U>> {
        let precision = match self {
            Exact(value) => Exact(f(value)?),
            Inexact(value) => Inexact(f(value)?),
        };
        Ok(precision)
    }

    /// Unwrap the underlying value
    pub fn into_inner(self) -> T {
        match self {
            Exact(val) | Inexact(val) => val,
        }
    }
}

impl<T: Display> Display for Precision<T> {
    fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
        match self {
            Exact(v) => {
                write!(f, "{v}")
            }
            Inexact(v) => {
                write!(f, "~{v}")
            }
        }
    }
}

impl<T: PartialEq> PartialEq<T> for Precision<T> {
    fn eq(&self, other: &T) -> bool {
        match self {
            Exact(v) => v == other,
            _ => false,
        }
    }
}

impl Precision<ScalarValue> {
    pub fn into_scalar(self, dtype: DType) -> Precision<Scalar> {
        self.map(|v| Scalar::new(dtype, v))
    }
}

impl Precision<&ScalarValue> {
    pub fn into_scalar(self, dtype: DType) -> Precision<Scalar> {
        self.map(|v| Scalar::new(dtype, v.clone()))
    }
}

1	// SPDX-License-Identifier: Apache-2.0
2	// SPDX-FileCopyrightText: Copyright the Vortex contributors
3
4	use std::fmt::{Debug, Display, Formatter};
5
6	use vortex_dtype::DType;
7	use vortex_error::VortexResult;
8	use vortex_scalar::{Scalar, ScalarValue};
9
10	use crate::stats::precision::Precision::{Exact, Inexact};
11
12	/// A statistic has a precision `Exact` or `Inexact`. This represents uncertainty in that value.
13	/// Exact values are computed, where can inexact values are likely inferred from compute functions.
14	///
15	/// Inexact statistics form a range of possible values that the statistic could be.
16	/// This is statistic specific, for max this will be an upper bound. Meaning that the actual max
17	/// in an array is guaranteed to be less than or equal to the inexact value, but equal to the exact
18	/// value.
19	#[derive(Debug, PartialEq, Eq)]
20	pub enum Precision<T> {
21	Exact(T),
22	Inexact(T),
23	}
24
25	impl<T> Clone for Precision<T>
26	where
27	T: Clone,
28	{
29	fn clone(&self) -> Self {	874✔
30	match self {	874✔
31	Exact(e) => Exact(e.clone()),	874✔
UNCOV 32	Inexact(ie) => Inexact(ie.clone()),	×
33	}
34	}	874✔
35	}
36
37	impl<T> Precision<Option<T>> {
38	/// Transpose the `Option<Precision<T>>` into `Option<Precision<T>>`.
UNCOV 39	pub fn transpose(self) -> Option<Precision<T>> {	×
UNCOV 40	match self {	×
UNCOV 41	Exact(Some(x)) => Some(Exact(x)),	×
42	Inexact(Some(x)) => Some(Inexact(x)),	×
UNCOV 43	_ => None,	×
44	}
UNCOV 45	}	×
46	}
47
48	impl<T> Precision<T>
49	where
50	T: Copy,
51	{
52	pub fn to_inexact(&self) -> Self {	×
53	match self {	×
54	Exact(v) => Exact(*v),	×
55	Inexact(v) => Inexact(*v),	×
56	}
57	}	×
58	}
59
60	impl<T> Precision<T> {
61	/// Creates an exact value
62	pub fn exact<S: Into<T>>(s: S) -> Precision<T> {	186✔
63	Exact(s.into())	186✔
64	}	186✔
65
66	/// Creates an inexact value
UNCOV 67	pub fn inexact<S: Into<T>>(s: S) -> Precision<T> {	×
UNCOV 68	Inexact(s.into())	×
UNCOV 69	}	×
70
71	/// Pushed the ref into the Precision enum
72	pub fn as_ref(&self) -> Precision<&T> {	180✔
73	match self {	180✔
74	Exact(val) => Exact(val),	180✔
75	Inexact(val) => Inexact(val),	×
76	}
77	}	180✔
78
79	/// Converts `self` into an inexact bound
UNCOV 80	pub fn into_inexact(self) -> Self {	×
UNCOV 81	match self {	×
UNCOV 82	Exact(val) => Inexact(val),	×
83	Inexact(_) => self,	×
84	}
UNCOV 85	}	×
86
87	/// Returns the exact value from the bound, if that value is inexact, otherwise `None`.
88	pub fn as_exact(self) -> Option<T> {	210✔
89	match self {	210✔
90	Exact(val) => Some(val),	210✔
91	_ => None,	×
92	}
93	}	210✔
94
95	/// Returns the exact value from the bound, if that value is inexact, otherwise `None`.
96	pub fn as_inexact(self) -> Option<T> {	×
97	match self {	×
98	Inexact(val) => Some(val),	×
99	_ => None,	×
100	}
101	}	×
102
103	/// True iff self == Exact(_)
104	pub fn is_exact(&self) -> bool {	32✔
105	matches!(self, Exact(_))	32✔
106	}	32✔
107
108	/// Map the value of either precision value
109	pub fn map<U, F: FnOnce(T) -> U>(self, f: F) -> Precision<U> {	242✔
110	match self {	242✔
111	Exact(value) => Exact(f(value)),	242✔
UNCOV 112	Inexact(value) => Inexact(f(value)),	×
113	}
114	}	242✔
115
116	/// Zip two `Precision` values into a tuple, keeping the inexactness if any.
UNCOV 117	pub fn zip<U>(self, other: Precision<U>) -> Precision<(T, U)> {	×
UNCOV 118	match (self, other) {	×
UNCOV 119	(Exact(lhs), Exact(rhs)) => Exact((lhs, rhs)),	×
120	(Inexact(lhs), Exact(rhs))	×
UNCOV 121	\| (Exact(lhs), Inexact(rhs))	×
UNCOV 122	\| (Inexact(lhs), Inexact(rhs)) => Inexact((lhs, rhs)),	×
123	}
UNCOV 124	}	×
125
126	/// Similar to `map` but handles fucntions that can fail.
127	pub fn try_map<U, F: FnOnce(T) -> VortexResult<U>>(self, f: F) -> VortexResult<Precision<U>> {	×
128	let precision = match self {	×
129	Exact(value) => Exact(f(value)?),	×
130	Inexact(value) => Inexact(f(value)?),	×
131	};
132	Ok(precision)	×
133	}	×
134
135	/// Unwrap the underlying value
136	pub fn into_inner(self) -> T {	32✔
137	match self {	32✔
138	Exact(val) \| Inexact(val) => val,	32✔
139	}
140	}	32✔
141	}
142
143	impl<T: Display> Display for Precision<T> {
144	fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {	×
145	match self {	×
146	Exact(v) => {	×
147	write!(f, "{v}")	×
148	}
149	Inexact(v) => {	×
150	write!(f, "~{v}")	×
151	}
152	}
153	}	×
154	}
155
156	impl<T: PartialEq> PartialEq<T> for Precision<T> {
UNCOV 157	fn eq(&self, other: &T) -> bool {	×
UNCOV 158	match self {	×
UNCOV 159	Exact(v) => v == other,	×
160	_ => false,	×
161	}
UNCOV 162	}	×
163	}
164
165	impl Precision<ScalarValue> {
166	pub fn into_scalar(self, dtype: DType) -> Precision<Scalar> {	×
167	self.map(\|v\| Scalar::new(dtype, v))	×
168	}	×
169	}
170
171	impl Precision<&ScalarValue> {
172	pub fn into_scalar(self, dtype: DType) -> Precision<Scalar> {	×
173	self.map(\|v\| Scalar::new(dtype, v.clone()))	×
174	}	×
175	}

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