| use core::fmt::Debug; |
| use core::num::{IntErrorKind, ParseIntError, TryFromIntError, can_not_overflow}; |
| use core::ops::{Add, Div, Mul, Rem, Sub}; |
| use core::str::FromStr; |
| |
| #[macro_use] |
| mod int_macros; |
| |
| mod i128; |
| mod i16; |
| mod i32; |
| mod i64; |
| mod i8; |
| |
| #[macro_use] |
| mod uint_macros; |
| |
| mod u128; |
| mod u16; |
| mod u32; |
| mod u64; |
| mod u8; |
| |
| mod bignum; |
| mod const_from; |
| mod dec2flt; |
| mod float_iter_sum_identity; |
| mod flt2dec; |
| mod ieee754; |
| mod int_log; |
| mod int_sqrt; |
| mod midpoint; |
| mod nan; |
| mod niche_types; |
| mod ops; |
| mod wrapping; |
| |
| /// Adds the attribute to all items in the block. |
| macro_rules! cfg_block { |
| ($(#[$attr:meta]{$($it:item)*})*) => {$($( |
| #[$attr] |
| $it |
| )*)*} |
| } |
| |
| /// Groups items that assume the pointer width is either 16/32/64, and has to be altered if |
| /// support for larger/smaller pointer widths are added in the future. |
| macro_rules! assume_usize_width { |
| {$($it:item)*} => {#[cfg(not(any( |
| target_pointer_width = "16", target_pointer_width = "32", target_pointer_width = "64")))] |
| compile_error!("The current tests of try_from on usize/isize assume that \ |
| the pointer width is either 16, 32, or 64"); |
| $($it)* |
| } |
| } |
| |
| /// Return `a * 2^b`. |
| #[cfg(target_has_reliable_f16)] |
| fn ldexp_f16(a: f16, b: i32) -> f16 { |
| ldexp_f64(a as f64, b) as f16 |
| } |
| |
| /// Return `a * 2^b`. |
| fn ldexp_f32(a: f32, b: i32) -> f32 { |
| ldexp_f64(a as f64, b) as f32 |
| } |
| |
| /// Return `a * 2^b`. |
| fn ldexp_f64(a: f64, b: i32) -> f64 { |
| unsafe extern "C" { |
| fn ldexp(x: f64, n: i32) -> f64; |
| } |
| // SAFETY: assuming a correct `ldexp` has been supplied, the given arguments cannot possibly |
| // cause undefined behavior |
| unsafe { ldexp(a, b) } |
| } |
| |
| /// Helper function for testing numeric operations |
| pub fn test_num<T>(ten: T, two: T) |
| where |
| T: PartialEq |
| + Add<Output = T> |
| + Sub<Output = T> |
| + Mul<Output = T> |
| + Div<Output = T> |
| + Rem<Output = T> |
| + Debug |
| + Copy, |
| { |
| assert_eq!(ten.add(two), ten + two); |
| assert_eq!(ten.sub(two), ten - two); |
| assert_eq!(ten.mul(two), ten * two); |
| assert_eq!(ten.div(two), ten / two); |
| assert_eq!(ten.rem(two), ten % two); |
| } |
| |
| /// Helper function for asserting number parsing returns a specific error |
| fn test_parse<T>(num_str: &str, expected: Result<T, IntErrorKind>) |
| where |
| T: FromStr<Err = ParseIntError>, |
| Result<T, IntErrorKind>: PartialEq + Debug, |
| { |
| assert_eq!(num_str.parse::<T>().map_err(|e| e.kind().clone()), expected) |
| } |
| |
| #[test] |
| fn from_str_issue7588() { |
| let u: Option<u8> = u8::from_str_radix("1000", 10).ok(); |
| assert_eq!(u, None); |
| let s: Option<i16> = i16::from_str_radix("80000", 10).ok(); |
| assert_eq!(s, None); |
| } |
| |
| #[test] |
| fn test_int_from_str_overflow() { |
| test_parse::<i8>("127", Ok(127)); |
| test_parse::<i8>("128", Err(IntErrorKind::PosOverflow)); |
| |
| test_parse::<i8>("-128", Ok(-128)); |
| test_parse::<i8>("-129", Err(IntErrorKind::NegOverflow)); |
| |
| test_parse::<i16>("32767", Ok(32_767)); |
| test_parse::<i16>("32768", Err(IntErrorKind::PosOverflow)); |
| |
| test_parse::<i16>("-32768", Ok(-32_768)); |
| test_parse::<i16>("-32769", Err(IntErrorKind::NegOverflow)); |
| |
| test_parse::<i32>("2147483647", Ok(2_147_483_647)); |
| test_parse::<i32>("2147483648", Err(IntErrorKind::PosOverflow)); |
| |
| test_parse::<i32>("-2147483648", Ok(-2_147_483_648)); |
| test_parse::<i32>("-2147483649", Err(IntErrorKind::NegOverflow)); |
| |
| test_parse::<i64>("9223372036854775807", Ok(9_223_372_036_854_775_807)); |
| test_parse::<i64>("9223372036854775808", Err(IntErrorKind::PosOverflow)); |
| |
| test_parse::<i64>("-9223372036854775808", Ok(-9_223_372_036_854_775_808)); |
| test_parse::<i64>("-9223372036854775809", Err(IntErrorKind::NegOverflow)); |
| } |
| |
| #[test] |
| fn test_can_not_overflow() { |
| fn can_overflow<T>(radix: u32, input: &str) -> bool |
| where |
| T: std::convert::TryFrom<i8>, |
| { |
| !can_not_overflow::<T>(radix, T::try_from(-1_i8).is_ok(), input.as_bytes()) |
| } |
| |
| // Positive tests: |
| assert!(!can_overflow::<i8>(16, "F")); |
| assert!(!can_overflow::<u8>(16, "FF")); |
| |
| assert!(!can_overflow::<i8>(10, "9")); |
| assert!(!can_overflow::<u8>(10, "99")); |
| |
| // Negative tests: |
| |
| // Not currently in std lib (issue: #27728) |
| fn format_radix<T>(mut x: T, radix: T) -> String |
| where |
| T: std::ops::Rem<Output = T>, |
| T: std::ops::Div<Output = T>, |
| T: std::cmp::PartialEq, |
| T: std::default::Default, |
| T: Copy, |
| T: Default, |
| u32: TryFrom<T>, |
| { |
| let mut result = vec![]; |
| |
| loop { |
| let m = x % radix; |
| x = x / radix; |
| result.push( |
| std::char::from_digit(m.try_into().ok().unwrap(), radix.try_into().ok().unwrap()) |
| .unwrap(), |
| ); |
| if x == T::default() { |
| break; |
| } |
| } |
| result.into_iter().rev().collect() |
| } |
| |
| macro_rules! check { |
| ($($t:ty)*) => ($( |
| for base in 2..=36 { |
| let num = (<$t>::MAX as u128) + 1; |
| |
| // Calculate the string length for the smallest overflowing number: |
| let max_len_string = format_radix(num, base as u128); |
| // Ensure that string length is deemed to potentially overflow: |
| assert!(can_overflow::<$t>(base, &max_len_string)); |
| } |
| )*) |
| } |
| |
| check! { i8 i16 i32 i64 i128 isize usize u8 u16 u32 u64 } |
| |
| // Check u128 separately: |
| for base in 2..=36 { |
| let num = <u128>::MAX; |
| let max_len_string = format_radix(num, base as u128); |
| // base 16 fits perfectly for u128 and won't overflow: |
| assert_eq!(can_overflow::<u128>(base, &max_len_string), base != 16); |
| } |
| } |
| |
| #[test] |
| fn test_leading_plus() { |
| test_parse::<u8>("+127", Ok(127)); |
| test_parse::<i64>("+9223372036854775807", Ok(9223372036854775807)); |
| } |
| |
| #[test] |
| fn test_invalid() { |
| test_parse::<i8>("--129", Err(IntErrorKind::InvalidDigit)); |
| test_parse::<i8>("++129", Err(IntErrorKind::InvalidDigit)); |
| test_parse::<u8>("Съешь", Err(IntErrorKind::InvalidDigit)); |
| test_parse::<u8>("123Hello", Err(IntErrorKind::InvalidDigit)); |
| test_parse::<i8>("--", Err(IntErrorKind::InvalidDigit)); |
| test_parse::<i8>("-", Err(IntErrorKind::InvalidDigit)); |
| test_parse::<i8>("+", Err(IntErrorKind::InvalidDigit)); |
| test_parse::<u8>("-1", Err(IntErrorKind::InvalidDigit)); |
| } |
| |
| #[test] |
| fn test_empty() { |
| test_parse::<u8>("", Err(IntErrorKind::Empty)); |
| } |
| |
| #[test] |
| fn test_infallible_try_from_int_error() { |
| let func = |x: i8| -> Result<i32, TryFromIntError> { Ok(x.try_into()?) }; |
| |
| assert!(func(0).is_ok()); |
| } |
| |
| const _TEST_CONST_PARSE: () = { |
| let Ok(-0x8000) = i16::from_str_radix("-8000", 16) else { panic!() }; |
| let Ok(12345) = u64::from_str_radix("12345", 10) else { panic!() }; |
| if let Err(e) = i8::from_str_radix("+", 10) { |
| let IntErrorKind::InvalidDigit = e.kind() else { panic!() }; |
| } else { |
| panic!() |
| } |
| }; |
| |
| macro_rules! test_impl_from { |
| ($fn_name:ident, bool, $target: ty) => { |
| #[test] |
| fn $fn_name() { |
| let one: $target = 1; |
| let zero: $target = 0; |
| assert_eq!(one, <$target>::from(true)); |
| assert_eq!(zero, <$target>::from(false)); |
| } |
| }; |
| ($fn_name: ident, $Small: ty, $Large: ty) => { |
| #[test] |
| fn $fn_name() { |
| let small_max = <$Small>::MAX; |
| let small_min = <$Small>::MIN; |
| let large_max: $Large = small_max.into(); |
| let large_min: $Large = small_min.into(); |
| assert_eq!(large_max as $Small, small_max); |
| assert_eq!(large_min as $Small, small_min); |
| } |
| }; |
| } |
| |
| // Unsigned -> Unsigned |
| test_impl_from! { test_u8u16, u8, u16 } |
| test_impl_from! { test_u8u32, u8, u32 } |
| test_impl_from! { test_u8u64, u8, u64 } |
| test_impl_from! { test_u8usize, u8, usize } |
| test_impl_from! { test_u16u32, u16, u32 } |
| test_impl_from! { test_u16u64, u16, u64 } |
| test_impl_from! { test_u32u64, u32, u64 } |
| |
| // Signed -> Signed |
| test_impl_from! { test_i8i16, i8, i16 } |
| test_impl_from! { test_i8i32, i8, i32 } |
| test_impl_from! { test_i8i64, i8, i64 } |
| test_impl_from! { test_i8isize, i8, isize } |
| test_impl_from! { test_i16i32, i16, i32 } |
| test_impl_from! { test_i16i64, i16, i64 } |
| test_impl_from! { test_i32i64, i32, i64 } |
| |
| // Unsigned -> Signed |
| test_impl_from! { test_u8i16, u8, i16 } |
| test_impl_from! { test_u8i32, u8, i32 } |
| test_impl_from! { test_u8i64, u8, i64 } |
| test_impl_from! { test_u16i32, u16, i32 } |
| test_impl_from! { test_u16i64, u16, i64 } |
| test_impl_from! { test_u32i64, u32, i64 } |
| |
| // Bool -> Integer |
| test_impl_from! { test_boolu8, bool, u8 } |
| test_impl_from! { test_boolu16, bool, u16 } |
| test_impl_from! { test_boolu32, bool, u32 } |
| test_impl_from! { test_boolu64, bool, u64 } |
| test_impl_from! { test_boolu128, bool, u128 } |
| test_impl_from! { test_booli8, bool, i8 } |
| test_impl_from! { test_booli16, bool, i16 } |
| test_impl_from! { test_booli32, bool, i32 } |
| test_impl_from! { test_booli64, bool, i64 } |
| test_impl_from! { test_booli128, bool, i128 } |
| |
| // Signed -> Float |
| test_impl_from! { test_i8f32, i8, f32 } |
| test_impl_from! { test_i8f64, i8, f64 } |
| test_impl_from! { test_i16f32, i16, f32 } |
| test_impl_from! { test_i16f64, i16, f64 } |
| test_impl_from! { test_i32f64, i32, f64 } |
| |
| // Unsigned -> Float |
| test_impl_from! { test_u8f32, u8, f32 } |
| test_impl_from! { test_u8f64, u8, f64 } |
| test_impl_from! { test_u16f32, u16, f32 } |
| test_impl_from! { test_u16f64, u16, f64 } |
| test_impl_from! { test_u32f64, u32, f64 } |
| |
| // Float -> Float |
| #[test] |
| fn test_f32f64() { |
| let max: f64 = f32::MAX.into(); |
| assert_eq!(max as f32, f32::MAX); |
| assert!(max.is_normal()); |
| |
| let min: f64 = f32::MIN.into(); |
| assert_eq!(min as f32, f32::MIN); |
| assert!(min.is_normal()); |
| |
| let min_positive: f64 = f32::MIN_POSITIVE.into(); |
| assert_eq!(min_positive as f32, f32::MIN_POSITIVE); |
| assert!(min_positive.is_normal()); |
| |
| let epsilon: f64 = f32::EPSILON.into(); |
| assert_eq!(epsilon as f32, f32::EPSILON); |
| assert!(epsilon.is_normal()); |
| |
| let zero: f64 = (0.0f32).into(); |
| assert_eq!(zero as f32, 0.0f32); |
| assert!(zero.is_sign_positive()); |
| |
| let neg_zero: f64 = (-0.0f32).into(); |
| assert_eq!(neg_zero as f32, -0.0f32); |
| assert!(neg_zero.is_sign_negative()); |
| |
| let infinity: f64 = f32::INFINITY.into(); |
| assert_eq!(infinity as f32, f32::INFINITY); |
| assert!(infinity.is_infinite()); |
| assert!(infinity.is_sign_positive()); |
| |
| let neg_infinity: f64 = f32::NEG_INFINITY.into(); |
| assert_eq!(neg_infinity as f32, f32::NEG_INFINITY); |
| assert!(neg_infinity.is_infinite()); |
| assert!(neg_infinity.is_sign_negative()); |
| |
| let nan: f64 = f32::NAN.into(); |
| assert!(nan.is_nan()); |
| } |
| |
| /// Conversions where the full width of $source can be represented as $target |
| macro_rules! test_impl_try_from_always_ok { |
| ($fn_name:ident, $source:ty, $target: ty) => { |
| #[test] |
| fn $fn_name() { |
| let max = <$source>::MAX; |
| let min = <$source>::MIN; |
| let zero: $source = 0; |
| assert_eq!(<$target as TryFrom<$source>>::try_from(max).unwrap(), max as $target); |
| assert_eq!(<$target as TryFrom<$source>>::try_from(min).unwrap(), min as $target); |
| assert_eq!(<$target as TryFrom<$source>>::try_from(zero).unwrap(), zero as $target); |
| } |
| }; |
| } |
| |
| test_impl_try_from_always_ok! { test_try_u8u8, u8, u8 } |
| test_impl_try_from_always_ok! { test_try_u8u16, u8, u16 } |
| test_impl_try_from_always_ok! { test_try_u8u32, u8, u32 } |
| test_impl_try_from_always_ok! { test_try_u8u64, u8, u64 } |
| test_impl_try_from_always_ok! { test_try_u8u128, u8, u128 } |
| test_impl_try_from_always_ok! { test_try_u8i16, u8, i16 } |
| test_impl_try_from_always_ok! { test_try_u8i32, u8, i32 } |
| test_impl_try_from_always_ok! { test_try_u8i64, u8, i64 } |
| test_impl_try_from_always_ok! { test_try_u8i128, u8, i128 } |
| |
| test_impl_try_from_always_ok! { test_try_u16u16, u16, u16 } |
| test_impl_try_from_always_ok! { test_try_u16u32, u16, u32 } |
| test_impl_try_from_always_ok! { test_try_u16u64, u16, u64 } |
| test_impl_try_from_always_ok! { test_try_u16u128, u16, u128 } |
| test_impl_try_from_always_ok! { test_try_u16i32, u16, i32 } |
| test_impl_try_from_always_ok! { test_try_u16i64, u16, i64 } |
| test_impl_try_from_always_ok! { test_try_u16i128, u16, i128 } |
| |
| test_impl_try_from_always_ok! { test_try_u32u32, u32, u32 } |
| test_impl_try_from_always_ok! { test_try_u32u64, u32, u64 } |
| test_impl_try_from_always_ok! { test_try_u32u128, u32, u128 } |
| test_impl_try_from_always_ok! { test_try_u32i64, u32, i64 } |
| test_impl_try_from_always_ok! { test_try_u32i128, u32, i128 } |
| |
| test_impl_try_from_always_ok! { test_try_u64u64, u64, u64 } |
| test_impl_try_from_always_ok! { test_try_u64u128, u64, u128 } |
| test_impl_try_from_always_ok! { test_try_u64i128, u64, i128 } |
| |
| test_impl_try_from_always_ok! { test_try_u128u128, u128, u128 } |
| |
| test_impl_try_from_always_ok! { test_try_i8i8, i8, i8 } |
| test_impl_try_from_always_ok! { test_try_i8i16, i8, i16 } |
| test_impl_try_from_always_ok! { test_try_i8i32, i8, i32 } |
| test_impl_try_from_always_ok! { test_try_i8i64, i8, i64 } |
| test_impl_try_from_always_ok! { test_try_i8i128, i8, i128 } |
| |
| test_impl_try_from_always_ok! { test_try_i16i16, i16, i16 } |
| test_impl_try_from_always_ok! { test_try_i16i32, i16, i32 } |
| test_impl_try_from_always_ok! { test_try_i16i64, i16, i64 } |
| test_impl_try_from_always_ok! { test_try_i16i128, i16, i128 } |
| |
| test_impl_try_from_always_ok! { test_try_i32i32, i32, i32 } |
| test_impl_try_from_always_ok! { test_try_i32i64, i32, i64 } |
| test_impl_try_from_always_ok! { test_try_i32i128, i32, i128 } |
| |
| test_impl_try_from_always_ok! { test_try_i64i64, i64, i64 } |
| test_impl_try_from_always_ok! { test_try_i64i128, i64, i128 } |
| |
| test_impl_try_from_always_ok! { test_try_i128i128, i128, i128 } |
| |
| test_impl_try_from_always_ok! { test_try_usizeusize, usize, usize } |
| test_impl_try_from_always_ok! { test_try_isizeisize, isize, isize } |
| |
| assume_usize_width! { |
| test_impl_try_from_always_ok! { test_try_u8usize, u8, usize } |
| test_impl_try_from_always_ok! { test_try_u8isize, u8, isize } |
| test_impl_try_from_always_ok! { test_try_i8isize, i8, isize } |
| |
| test_impl_try_from_always_ok! { test_try_u16usize, u16, usize } |
| test_impl_try_from_always_ok! { test_try_i16isize, i16, isize } |
| |
| test_impl_try_from_always_ok! { test_try_usizeu64, usize, u64 } |
| test_impl_try_from_always_ok! { test_try_usizeu128, usize, u128 } |
| test_impl_try_from_always_ok! { test_try_usizei128, usize, i128 } |
| |
| test_impl_try_from_always_ok! { test_try_isizei64, isize, i64 } |
| test_impl_try_from_always_ok! { test_try_isizei128, isize, i128 } |
| |
| cfg_block!( |
| #[cfg(target_pointer_width = "16")] { |
| test_impl_try_from_always_ok! { test_try_usizeu16, usize, u16 } |
| test_impl_try_from_always_ok! { test_try_isizei16, isize, i16 } |
| test_impl_try_from_always_ok! { test_try_usizeu32, usize, u32 } |
| test_impl_try_from_always_ok! { test_try_usizei32, usize, i32 } |
| test_impl_try_from_always_ok! { test_try_isizei32, isize, i32 } |
| test_impl_try_from_always_ok! { test_try_usizei64, usize, i64 } |
| } |
| |
| #[cfg(target_pointer_width = "32")] { |
| test_impl_try_from_always_ok! { test_try_u16isize, u16, isize } |
| test_impl_try_from_always_ok! { test_try_usizeu32, usize, u32 } |
| test_impl_try_from_always_ok! { test_try_isizei32, isize, i32 } |
| test_impl_try_from_always_ok! { test_try_u32usize, u32, usize } |
| test_impl_try_from_always_ok! { test_try_i32isize, i32, isize } |
| test_impl_try_from_always_ok! { test_try_usizei64, usize, i64 } |
| } |
| |
| #[cfg(target_pointer_width = "64")] { |
| test_impl_try_from_always_ok! { test_try_u16isize, u16, isize } |
| test_impl_try_from_always_ok! { test_try_u32usize, u32, usize } |
| test_impl_try_from_always_ok! { test_try_u32isize, u32, isize } |
| test_impl_try_from_always_ok! { test_try_i32isize, i32, isize } |
| test_impl_try_from_always_ok! { test_try_u64usize, u64, usize } |
| test_impl_try_from_always_ok! { test_try_i64isize, i64, isize } |
| } |
| ); |
| } |
| |
| /// Conversions where max of $source can be represented as $target, |
| macro_rules! test_impl_try_from_signed_to_unsigned_upper_ok { |
| ($fn_name:ident, $source:ty, $target:ty) => { |
| #[test] |
| fn $fn_name() { |
| let max = <$source>::MAX; |
| let min = <$source>::MIN; |
| let zero: $source = 0; |
| let neg_one: $source = -1; |
| assert_eq!(<$target as TryFrom<$source>>::try_from(max).unwrap(), max as $target); |
| assert!(<$target as TryFrom<$source>>::try_from(min).is_err()); |
| assert_eq!(<$target as TryFrom<$source>>::try_from(zero).unwrap(), zero as $target); |
| assert!(<$target as TryFrom<$source>>::try_from(neg_one).is_err()); |
| } |
| }; |
| } |
| |
| test_impl_try_from_signed_to_unsigned_upper_ok! { test_try_i8u8, i8, u8 } |
| test_impl_try_from_signed_to_unsigned_upper_ok! { test_try_i8u16, i8, u16 } |
| test_impl_try_from_signed_to_unsigned_upper_ok! { test_try_i8u32, i8, u32 } |
| test_impl_try_from_signed_to_unsigned_upper_ok! { test_try_i8u64, i8, u64 } |
| test_impl_try_from_signed_to_unsigned_upper_ok! { test_try_i8u128, i8, u128 } |
| |
| test_impl_try_from_signed_to_unsigned_upper_ok! { test_try_i16u16, i16, u16 } |
| test_impl_try_from_signed_to_unsigned_upper_ok! { test_try_i16u32, i16, u32 } |
| test_impl_try_from_signed_to_unsigned_upper_ok! { test_try_i16u64, i16, u64 } |
| test_impl_try_from_signed_to_unsigned_upper_ok! { test_try_i16u128, i16, u128 } |
| |
| test_impl_try_from_signed_to_unsigned_upper_ok! { test_try_i32u32, i32, u32 } |
| test_impl_try_from_signed_to_unsigned_upper_ok! { test_try_i32u64, i32, u64 } |
| test_impl_try_from_signed_to_unsigned_upper_ok! { test_try_i32u128, i32, u128 } |
| |
| test_impl_try_from_signed_to_unsigned_upper_ok! { test_try_i64u64, i64, u64 } |
| test_impl_try_from_signed_to_unsigned_upper_ok! { test_try_i64u128, i64, u128 } |
| |
| test_impl_try_from_signed_to_unsigned_upper_ok! { test_try_i128u128, i128, u128 } |
| |
| assume_usize_width! { |
| test_impl_try_from_signed_to_unsigned_upper_ok! { test_try_i8usize, i8, usize } |
| test_impl_try_from_signed_to_unsigned_upper_ok! { test_try_i16usize, i16, usize } |
| |
| test_impl_try_from_signed_to_unsigned_upper_ok! { test_try_isizeu64, isize, u64 } |
| test_impl_try_from_signed_to_unsigned_upper_ok! { test_try_isizeu128, isize, u128 } |
| test_impl_try_from_signed_to_unsigned_upper_ok! { test_try_isizeusize, isize, usize } |
| |
| cfg_block!( |
| #[cfg(target_pointer_width = "16")] { |
| test_impl_try_from_signed_to_unsigned_upper_ok! { test_try_isizeu16, isize, u16 } |
| test_impl_try_from_signed_to_unsigned_upper_ok! { test_try_isizeu32, isize, u32 } |
| } |
| |
| #[cfg(target_pointer_width = "32")] { |
| test_impl_try_from_signed_to_unsigned_upper_ok! { test_try_isizeu32, isize, u32 } |
| |
| test_impl_try_from_signed_to_unsigned_upper_ok! { test_try_i32usize, i32, usize } |
| } |
| |
| #[cfg(target_pointer_width = "64")] { |
| test_impl_try_from_signed_to_unsigned_upper_ok! { test_try_i32usize, i32, usize } |
| test_impl_try_from_signed_to_unsigned_upper_ok! { test_try_i64usize, i64, usize } |
| } |
| ); |
| } |
| |
| /// Conversions where max of $source can not be represented as $target, |
| /// but min can. |
| macro_rules! test_impl_try_from_unsigned_to_signed_upper_err { |
| ($fn_name:ident, $source:ty, $target:ty) => { |
| #[test] |
| fn $fn_name() { |
| let max = <$source>::MAX; |
| let min = <$source>::MIN; |
| let zero: $source = 0; |
| assert!(<$target as TryFrom<$source>>::try_from(max).is_err()); |
| assert_eq!(<$target as TryFrom<$source>>::try_from(min).unwrap(), min as $target); |
| assert_eq!(<$target as TryFrom<$source>>::try_from(zero).unwrap(), zero as $target); |
| } |
| }; |
| } |
| |
| test_impl_try_from_unsigned_to_signed_upper_err! { test_try_u8i8, u8, i8 } |
| |
| test_impl_try_from_unsigned_to_signed_upper_err! { test_try_u16i8, u16, i8 } |
| test_impl_try_from_unsigned_to_signed_upper_err! { test_try_u16i16, u16, i16 } |
| |
| test_impl_try_from_unsigned_to_signed_upper_err! { test_try_u32i8, u32, i8 } |
| test_impl_try_from_unsigned_to_signed_upper_err! { test_try_u32i16, u32, i16 } |
| test_impl_try_from_unsigned_to_signed_upper_err! { test_try_u32i32, u32, i32 } |
| |
| test_impl_try_from_unsigned_to_signed_upper_err! { test_try_u64i8, u64, i8 } |
| test_impl_try_from_unsigned_to_signed_upper_err! { test_try_u64i16, u64, i16 } |
| test_impl_try_from_unsigned_to_signed_upper_err! { test_try_u64i32, u64, i32 } |
| test_impl_try_from_unsigned_to_signed_upper_err! { test_try_u64i64, u64, i64 } |
| |
| test_impl_try_from_unsigned_to_signed_upper_err! { test_try_u128i8, u128, i8 } |
| test_impl_try_from_unsigned_to_signed_upper_err! { test_try_u128i16, u128, i16 } |
| test_impl_try_from_unsigned_to_signed_upper_err! { test_try_u128i32, u128, i32 } |
| test_impl_try_from_unsigned_to_signed_upper_err! { test_try_u128i64, u128, i64 } |
| test_impl_try_from_unsigned_to_signed_upper_err! { test_try_u128i128, u128, i128 } |
| |
| assume_usize_width! { |
| test_impl_try_from_unsigned_to_signed_upper_err! { test_try_u64isize, u64, isize } |
| test_impl_try_from_unsigned_to_signed_upper_err! { test_try_u128isize, u128, isize } |
| |
| test_impl_try_from_unsigned_to_signed_upper_err! { test_try_usizei8, usize, i8 } |
| test_impl_try_from_unsigned_to_signed_upper_err! { test_try_usizei16, usize, i16 } |
| test_impl_try_from_unsigned_to_signed_upper_err! { test_try_usizeisize, usize, isize } |
| |
| cfg_block!( |
| #[cfg(target_pointer_width = "16")] { |
| test_impl_try_from_unsigned_to_signed_upper_err! { test_try_u16isize, u16, isize } |
| test_impl_try_from_unsigned_to_signed_upper_err! { test_try_u32isize, u32, isize } |
| } |
| |
| #[cfg(target_pointer_width = "32")] { |
| test_impl_try_from_unsigned_to_signed_upper_err! { test_try_u32isize, u32, isize } |
| test_impl_try_from_unsigned_to_signed_upper_err! { test_try_usizei32, usize, i32 } |
| } |
| |
| #[cfg(target_pointer_width = "64")] { |
| test_impl_try_from_unsigned_to_signed_upper_err! { test_try_usizei32, usize, i32 } |
| test_impl_try_from_unsigned_to_signed_upper_err! { test_try_usizei64, usize, i64 } |
| } |
| ); |
| } |
| |
| /// Conversions where min/max of $source can not be represented as $target. |
| macro_rules! test_impl_try_from_same_sign_err { |
| ($fn_name:ident, $source:ty, $target:ty) => { |
| #[test] |
| fn $fn_name() { |
| let max = <$source>::MAX; |
| let min = <$source>::MIN; |
| let zero: $source = 0; |
| let t_max = <$target>::MAX; |
| let t_min = <$target>::MIN; |
| assert!(<$target as TryFrom<$source>>::try_from(max).is_err()); |
| if min != 0 { |
| assert!(<$target as TryFrom<$source>>::try_from(min).is_err()); |
| } |
| assert_eq!(<$target as TryFrom<$source>>::try_from(zero).unwrap(), zero as $target); |
| assert_eq!( |
| <$target as TryFrom<$source>>::try_from(t_max as $source).unwrap(), |
| t_max as $target |
| ); |
| assert_eq!( |
| <$target as TryFrom<$source>>::try_from(t_min as $source).unwrap(), |
| t_min as $target |
| ); |
| } |
| }; |
| } |
| |
| test_impl_try_from_same_sign_err! { test_try_u16u8, u16, u8 } |
| |
| test_impl_try_from_same_sign_err! { test_try_u32u8, u32, u8 } |
| test_impl_try_from_same_sign_err! { test_try_u32u16, u32, u16 } |
| |
| test_impl_try_from_same_sign_err! { test_try_u64u8, u64, u8 } |
| test_impl_try_from_same_sign_err! { test_try_u64u16, u64, u16 } |
| test_impl_try_from_same_sign_err! { test_try_u64u32, u64, u32 } |
| |
| test_impl_try_from_same_sign_err! { test_try_u128u8, u128, u8 } |
| test_impl_try_from_same_sign_err! { test_try_u128u16, u128, u16 } |
| test_impl_try_from_same_sign_err! { test_try_u128u32, u128, u32 } |
| test_impl_try_from_same_sign_err! { test_try_u128u64, u128, u64 } |
| |
| test_impl_try_from_same_sign_err! { test_try_i16i8, i16, i8 } |
| test_impl_try_from_same_sign_err! { test_try_isizei8, isize, i8 } |
| |
| test_impl_try_from_same_sign_err! { test_try_i32i8, i32, i8 } |
| test_impl_try_from_same_sign_err! { test_try_i32i16, i32, i16 } |
| |
| test_impl_try_from_same_sign_err! { test_try_i64i8, i64, i8 } |
| test_impl_try_from_same_sign_err! { test_try_i64i16, i64, i16 } |
| test_impl_try_from_same_sign_err! { test_try_i64i32, i64, i32 } |
| |
| test_impl_try_from_same_sign_err! { test_try_i128i8, i128, i8 } |
| test_impl_try_from_same_sign_err! { test_try_i128i16, i128, i16 } |
| test_impl_try_from_same_sign_err! { test_try_i128i32, i128, i32 } |
| test_impl_try_from_same_sign_err! { test_try_i128i64, i128, i64 } |
| |
| assume_usize_width! { |
| test_impl_try_from_same_sign_err! { test_try_usizeu8, usize, u8 } |
| test_impl_try_from_same_sign_err! { test_try_u128usize, u128, usize } |
| test_impl_try_from_same_sign_err! { test_try_i128isize, i128, isize } |
| |
| cfg_block!( |
| #[cfg(target_pointer_width = "16")] { |
| test_impl_try_from_same_sign_err! { test_try_u32usize, u32, usize } |
| test_impl_try_from_same_sign_err! { test_try_u64usize, u64, usize } |
| |
| test_impl_try_from_same_sign_err! { test_try_i32isize, i32, isize } |
| test_impl_try_from_same_sign_err! { test_try_i64isize, i64, isize } |
| } |
| |
| #[cfg(target_pointer_width = "32")] { |
| test_impl_try_from_same_sign_err! { test_try_u64usize, u64, usize } |
| test_impl_try_from_same_sign_err! { test_try_usizeu16, usize, u16 } |
| |
| test_impl_try_from_same_sign_err! { test_try_i64isize, i64, isize } |
| test_impl_try_from_same_sign_err! { test_try_isizei16, isize, i16 } |
| } |
| |
| #[cfg(target_pointer_width = "64")] { |
| test_impl_try_from_same_sign_err! { test_try_usizeu16, usize, u16 } |
| test_impl_try_from_same_sign_err! { test_try_usizeu32, usize, u32 } |
| |
| test_impl_try_from_same_sign_err! { test_try_isizei16, isize, i16 } |
| test_impl_try_from_same_sign_err! { test_try_isizei32, isize, i32 } |
| } |
| ); |
| } |
| |
| /// Conversions where neither the min nor the max of $source can be represented by |
| /// $target, but max/min of the target can be represented by the source. |
| macro_rules! test_impl_try_from_signed_to_unsigned_err { |
| ($fn_name:ident, $source:ty, $target:ty) => { |
| #[test] |
| fn $fn_name() { |
| let max = <$source>::MAX; |
| let min = <$source>::MIN; |
| let zero: $source = 0; |
| let t_max = <$target>::MAX; |
| let t_min = <$target>::MIN; |
| assert!(<$target as TryFrom<$source>>::try_from(max).is_err()); |
| assert!(<$target as TryFrom<$source>>::try_from(min).is_err()); |
| assert_eq!(<$target as TryFrom<$source>>::try_from(zero).unwrap(), zero as $target); |
| assert_eq!( |
| <$target as TryFrom<$source>>::try_from(t_max as $source).unwrap(), |
| t_max as $target |
| ); |
| assert_eq!( |
| <$target as TryFrom<$source>>::try_from(t_min as $source).unwrap(), |
| t_min as $target |
| ); |
| } |
| }; |
| } |
| |
| test_impl_try_from_signed_to_unsigned_err! { test_try_i16u8, i16, u8 } |
| |
| test_impl_try_from_signed_to_unsigned_err! { test_try_i32u8, i32, u8 } |
| test_impl_try_from_signed_to_unsigned_err! { test_try_i32u16, i32, u16 } |
| |
| test_impl_try_from_signed_to_unsigned_err! { test_try_i64u8, i64, u8 } |
| test_impl_try_from_signed_to_unsigned_err! { test_try_i64u16, i64, u16 } |
| test_impl_try_from_signed_to_unsigned_err! { test_try_i64u32, i64, u32 } |
| |
| test_impl_try_from_signed_to_unsigned_err! { test_try_i128u8, i128, u8 } |
| test_impl_try_from_signed_to_unsigned_err! { test_try_i128u16, i128, u16 } |
| test_impl_try_from_signed_to_unsigned_err! { test_try_i128u32, i128, u32 } |
| test_impl_try_from_signed_to_unsigned_err! { test_try_i128u64, i128, u64 } |
| |
| assume_usize_width! { |
| test_impl_try_from_signed_to_unsigned_err! { test_try_isizeu8, isize, u8 } |
| test_impl_try_from_signed_to_unsigned_err! { test_try_i128usize, i128, usize } |
| |
| cfg_block! { |
| #[cfg(target_pointer_width = "16")] { |
| test_impl_try_from_signed_to_unsigned_err! { test_try_i32usize, i32, usize } |
| test_impl_try_from_signed_to_unsigned_err! { test_try_i64usize, i64, usize } |
| } |
| #[cfg(target_pointer_width = "32")] { |
| test_impl_try_from_signed_to_unsigned_err! { test_try_i64usize, i64, usize } |
| |
| test_impl_try_from_signed_to_unsigned_err! { test_try_isizeu16, isize, u16 } |
| } |
| #[cfg(target_pointer_width = "64")] { |
| test_impl_try_from_signed_to_unsigned_err! { test_try_isizeu16, isize, u16 } |
| test_impl_try_from_signed_to_unsigned_err! { test_try_isizeu32, isize, u32 } |
| } |
| } |
| } |
