/rust/registry/src/index.crates.io-1949cf8c6b5b557f/fixed_decimal-0.5.6/src/integer.rs

Source
// This file is part of ICU4X. For terms of use, please see the file
// called LICENSE at the top level of the ICU4X source tree
// (online at: https://github.com/unicode-org/icu4x/blob/main/LICENSE ).

use core::convert::TryFrom;
use core::fmt;

use core::str::FromStr;

use crate::Error;
use crate::FixedDecimal;

/// A [`FixedInteger`] is a [`FixedDecimal`] with no fractional part.
///
///
/// # Examples
///
/// ```
/// # use std::str::FromStr;
/// use fixed_decimal::Error;
/// use fixed_decimal::FixedDecimal;
/// use fixed_decimal::FixedInteger;
///
/// assert_eq!(
///     FixedDecimal::from(FixedInteger::from(5)),
///     FixedDecimal::from(5)
/// );
/// assert_eq!(
///     FixedInteger::try_from(FixedDecimal::from(5)),
///     Ok(FixedInteger::from(5))
/// );
/// assert_eq!(
///     FixedInteger::try_from(FixedDecimal::from_str("05").unwrap()),
///     Ok(FixedInteger::from_str("05").unwrap())
/// );
/// assert_eq!(
///     FixedInteger::try_from(FixedDecimal::from_str("5.0").unwrap()),
///     Err(Error::Limit)
/// );
/// ```
#[derive(Debug, Clone, PartialEq, Default)]
pub struct FixedInteger(FixedDecimal);

impl From<FixedInteger> for FixedDecimal {
    fn from(value: FixedInteger) -> Self {
        value.0
    }
}

macro_rules! impl_fixed_integer_from_integer_type {
    ($type:ident) => {
        impl From<$type> for FixedInteger {
            fn from(value: $type) -> Self {
                FixedInteger(FixedDecimal::from(value))
            }
        }
    };
}

impl_fixed_integer_from_integer_type!(isize);
impl_fixed_integer_from_integer_type!(i128);
impl_fixed_integer_from_integer_type!(i64);
impl_fixed_integer_from_integer_type!(i32);
impl_fixed_integer_from_integer_type!(i16);
impl_fixed_integer_from_integer_type!(i8);
impl_fixed_integer_from_integer_type!(usize);
impl_fixed_integer_from_integer_type!(u128);
impl_fixed_integer_from_integer_type!(u64);
impl_fixed_integer_from_integer_type!(u32);
impl_fixed_integer_from_integer_type!(u16);
impl_fixed_integer_from_integer_type!(u8);

impl writeable::Writeable for FixedInteger {
    fn write_to<W: fmt::Write + ?Sized>(&self, sink: &mut W) -> fmt::Result {
        self.0.write_to(sink)
    }
}

impl TryFrom<FixedDecimal> for FixedInteger {
    type Error = Error;
    fn try_from(value: FixedDecimal) -> Result<Self, Error> {
        if value.magnitude_range().start() != &0 {
            Err(Error::Limit)
        } else {
            Ok(FixedInteger(value))
        }
    }
}

impl TryFrom<&[u8]> for FixedInteger {
    type Error = Error;
    fn try_from(value: &[u8]) -> Result<Self, Error> {
        FixedInteger::try_from(FixedDecimal::try_from(value)?)
    }
}

impl FromStr for FixedInteger {
    type Err = Error;
    fn from_str(value: &str) -> Result<Self, Self::Err> {
        FixedInteger::try_from(FixedDecimal::from_str(value)?)
    }
}

Coverage Report

Created: 2026-06-14 07:00

Line	Count	Source
1		// This file is part of ICU4X. For terms of use, please see the file
2		// called LICENSE at the top level of the ICU4X source tree
3		// (online at: https://github.com/unicode-org/icu4x/blob/main/LICENSE ).
4
5		use core::convert::TryFrom;
6		use core::fmt;
7
8		use core::str::FromStr;
9
10		use crate::Error;
11		use crate::FixedDecimal;
12
13		/// A [`FixedInteger`] is a [`FixedDecimal`] with no fractional part.
14		///
15		///
16		/// # Examples
17		///
18		/// ```
19		/// # use std::str::FromStr;
20		/// use fixed_decimal::Error;
21		/// use fixed_decimal::FixedDecimal;
22		/// use fixed_decimal::FixedInteger;
23		///
24		/// assert_eq!(
25		/// FixedDecimal::from(FixedInteger::from(5)),
26		/// FixedDecimal::from(5)
27		/// );
28		/// assert_eq!(
29		/// FixedInteger::try_from(FixedDecimal::from(5)),
30		/// Ok(FixedInteger::from(5))
31		/// );
32		/// assert_eq!(
33		/// FixedInteger::try_from(FixedDecimal::from_str("05").unwrap()),
34		/// Ok(FixedInteger::from_str("05").unwrap())
35		/// );
36		/// assert_eq!(
37		/// FixedInteger::try_from(FixedDecimal::from_str("5.0").unwrap()),
38		/// Err(Error::Limit)
39		/// );
40		/// ```
41		#[derive(Debug, Clone, PartialEq, Default)]
42		pub struct FixedInteger(FixedDecimal);
43
44		impl From<FixedInteger> for FixedDecimal {
45	0	fn from(value: FixedInteger) -> Self {
46	0	value.0
47	0	}
48		}
49
50		macro_rules! impl_fixed_integer_from_integer_type {
51		($type:ident) => {
52		impl From<$type> for FixedInteger {
53	0	fn from(value: $type) -> Self {
54	0	FixedInteger(FixedDecimal::from(value))
55	0	} Unexecuted instantiation: <fixed_decimal::integer::FixedInteger as core::convert::From<isize>>::from Unexecuted instantiation: <fixed_decimal::integer::FixedInteger as core::convert::From<i128>>::from Unexecuted instantiation: <fixed_decimal::integer::FixedInteger as core::convert::From<i64>>::from Unexecuted instantiation: <fixed_decimal::integer::FixedInteger as core::convert::From<i32>>::from Unexecuted instantiation: <fixed_decimal::integer::FixedInteger as core::convert::From<i16>>::from Unexecuted instantiation: <fixed_decimal::integer::FixedInteger as core::convert::From<i8>>::from Unexecuted instantiation: <fixed_decimal::integer::FixedInteger as core::convert::From<usize>>::from Unexecuted instantiation: <fixed_decimal::integer::FixedInteger as core::convert::From<u128>>::from Unexecuted instantiation: <fixed_decimal::integer::FixedInteger as core::convert::From<u64>>::from Unexecuted instantiation: <fixed_decimal::integer::FixedInteger as core::convert::From<u32>>::from Unexecuted instantiation: <fixed_decimal::integer::FixedInteger as core::convert::From<u16>>::from Unexecuted instantiation: <fixed_decimal::integer::FixedInteger as core::convert::From<u8>>::from
56		}
57		};
58		}
59
60		impl_fixed_integer_from_integer_type!(isize);
61		impl_fixed_integer_from_integer_type!(i128);
62		impl_fixed_integer_from_integer_type!(i64);
63		impl_fixed_integer_from_integer_type!(i32);
64		impl_fixed_integer_from_integer_type!(i16);
65		impl_fixed_integer_from_integer_type!(i8);
66		impl_fixed_integer_from_integer_type!(usize);
67		impl_fixed_integer_from_integer_type!(u128);
68		impl_fixed_integer_from_integer_type!(u64);
69		impl_fixed_integer_from_integer_type!(u32);
70		impl_fixed_integer_from_integer_type!(u16);
71		impl_fixed_integer_from_integer_type!(u8);
72
73		impl writeable::Writeable for FixedInteger {
74	0	fn write_to<W: fmt::Write + ?Sized>(&self, sink: &mut W) -> fmt::Result {
75	0	self.0.write_to(sink)
76	0	}
77		}
78
79		impl TryFrom<FixedDecimal> for FixedInteger {
80		type Error = Error;
81	0	fn try_from(value: FixedDecimal) -> Result<Self, Error> {
82	0	if value.magnitude_range().start() != &0 {
83	0	Err(Error::Limit)
84		} else {
85	0	Ok(FixedInteger(value))
86		}
87	0	}
88		}
89
90		impl TryFrom<&[u8]> for FixedInteger {
91		type Error = Error;
92	0	fn try_from(value: &[u8]) -> Result<Self, Error> {
93	0	FixedInteger::try_from(FixedDecimal::try_from(value)?)
94	0	}
95		}
96
97		impl FromStr for FixedInteger {
98		type Err = Error;
99	0	fn from_str(value: &str) -> Result<Self, Self::Err> {
100	0	FixedInteger::try_from(FixedDecimal::from_str(value)?)
101	0	}
102		}