rust/tests/ui/checked_conversions.fixed

107 lines
1.8 KiB
Rust

// run-rustfix
#![warn(clippy::checked_conversions)]
#![allow(clippy::cast_lossless)]
#![allow(dead_code)]
use std::convert::TryFrom;
// Positive tests
// Signed to unsigned
fn i64_to_u32(value: i64) -> Option<u32> {
if u32::try_from(value).is_ok() {
Some(value as u32)
} else {
None
}
}
fn i64_to_u16(value: i64) -> Option<u16> {
if u16::try_from(value).is_ok() {
Some(value as u16)
} else {
None
}
}
fn isize_to_u8(value: isize) -> Option<u8> {
if u8::try_from(value).is_ok() {
Some(value as u8)
} else {
None
}
}
// Signed to signed
fn i64_to_i32(value: i64) -> Option<i32> {
if i32::try_from(value).is_ok() {
Some(value as i32)
} else {
None
}
}
fn i64_to_i16(value: i64) -> Option<i16> {
if i16::try_from(value).is_ok() {
Some(value as i16)
} else {
None
}
}
// Unsigned to X
fn u32_to_i32(value: u32) -> Option<i32> {
if i32::try_from(value).is_ok() {
Some(value as i32)
} else {
None
}
}
fn usize_to_isize(value: usize) -> isize {
if isize::try_from(value).is_ok() && value as i32 == 5 {
5
} else {
1
}
}
fn u32_to_u16(value: u32) -> isize {
if u16::try_from(value).is_ok() && value as i32 == 5 {
5
} else {
1
}
}
// Negative tests
fn no_i64_to_i32(value: i64) -> Option<i32> {
if value <= (i32::max_value() as i64) && value >= 0 {
Some(value as i32)
} else {
None
}
}
fn no_isize_to_u8(value: isize) -> Option<u8> {
if value <= (u8::max_value() as isize) && value >= (u8::min_value() as isize) {
Some(value as u8)
} else {
None
}
}
fn i8_to_u8(value: i8) -> Option<u8> {
if value >= 0 {
Some(value as u8)
} else {
None
}
}
fn main() {}