mirror of
https://github.com/rust-lang/rust-clippy
synced 2024-12-05 02:50:32 +00:00
106 lines
1.8 KiB
Rust
106 lines
1.8 KiB
Rust
// run-rustfix
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#![warn(clippy::checked_conversions)]
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#![allow(clippy::cast_lossless)]
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#![allow(dead_code)]
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use std::convert::TryFrom;
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// Positive tests
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// Signed to unsigned
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fn i64_to_u32(value: i64) -> Option<u32> {
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if u32::try_from(value).is_ok() {
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Some(value as u32)
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} else {
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None
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}
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}
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fn i64_to_u16(value: i64) -> Option<u16> {
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if u16::try_from(value).is_ok() {
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Some(value as u16)
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} else {
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None
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}
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}
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fn isize_to_u8(value: isize) -> Option<u8> {
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if u8::try_from(value).is_ok() {
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Some(value as u8)
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} else {
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None
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}
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}
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// Signed to signed
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fn i64_to_i32(value: i64) -> Option<i32> {
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if i32::try_from(value).is_ok() {
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Some(value as i32)
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} else {
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None
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}
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}
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fn i64_to_i16(value: i64) -> Option<i16> {
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if i16::try_from(value).is_ok() {
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Some(value as i16)
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} else {
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None
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}
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}
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// Unsigned to X
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fn u32_to_i32(value: u32) -> Option<i32> {
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if i32::try_from(value).is_ok() {
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Some(value as i32)
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} else {
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None
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}
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}
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fn usize_to_isize(value: usize) -> isize {
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if isize::try_from(value).is_ok() && value as i32 == 5 {
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5
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} else {
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1
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}
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}
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fn u32_to_u16(value: u32) -> isize {
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if u16::try_from(value).is_ok() && value as i32 == 5 {
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5
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} else {
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1
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}
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}
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// Negative tests
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fn no_i64_to_i32(value: i64) -> Option<i32> {
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if value <= (i32::max_value() as i64) && value >= 0 {
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Some(value as i32)
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} else {
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None
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}
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}
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fn no_isize_to_u8(value: isize) -> Option<u8> {
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if value <= (u8::max_value() as isize) && value >= (u8::min_value() as isize) {
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Some(value as u8)
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} else {
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None
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}
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}
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fn i8_to_u8(value: i8) -> Option<u8> {
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if value >= 0 {
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Some(value as u8)
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} else {
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None
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}
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}
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fn main() {}
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