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// allow use of deprecated items in this module since some functions using `SignedHexDisplay` still
// exist here
#![allow(deprecated)]
use crate::YaxColors;
use core::fmt;
use core::num::Wrapping;
use core::ops::Neg;
mod display_sink;
pub use display_sink::{DisplaySink, FmtSink, InstructionTextSink};
/// translate a byte in range `[0, 15]` to a lowercase base-16 digit.
///
/// if `c` is in range, the output is always valid as the sole byte in a utf-8 string. if `c` is out
/// of range, the returned character might not be a valid single-byte utf-8 codepoint.
fn u8_to_hex(c: u8) -> u8 {
// this conditional branch is faster than a lookup for... most architectures (especially x86
// with cmov)
if c < 10 {
b'0' + c
} else {
b'a' + c - 10
}
}
#[deprecated(since="0.3.0", note="format_number_i32 does not optimize as expected and will be removed in the future. see DisplaySink instead.")]
pub enum NumberStyleHint {
Signed,
HexSigned,
SignedWithSign,
HexSignedWithSign,
SignedWithSignSplit,
HexSignedWithSignSplit,
Unsigned,
HexUnsigned,
UnsignedWithSign,
HexUnsignedWithSign
}
#[deprecated(since="0.3.0", note="format_number_i32 is both slow and incorrect: YaxColors may not result in correct styling when writing anywhere other than a terminal, and both stylin and formatting does not inline as well as initially expected. see DisplaySink instead.")]
pub fn format_number_i32<W: fmt::Write, Y: YaxColors>(colors: &Y, f: &mut W, i: i32, hint: NumberStyleHint) -> fmt::Result {
match hint {
NumberStyleHint::Signed => {
write!(f, "{}", colors.number(i))
},
NumberStyleHint::HexSigned => {
write!(f, "{}", colors.number(signed_i32_hex(i)))
},
NumberStyleHint::Unsigned => {
write!(f, "{}", colors.number(i as u32))
},
NumberStyleHint::HexUnsigned => {
write!(f, "{}", colors.number(u32_hex(i as u32)))
},
NumberStyleHint::SignedWithSignSplit => {
if i == core::i32::MIN {
write!(f, "- {}", colors.number("2147483647"))
} else if i < 0 {
write!(f, "- {}", colors.number(-Wrapping(i)))
} else {
write!(f, "+ {}", colors.number(i))
}
}
NumberStyleHint::HexSignedWithSignSplit => {
if i == core::i32::MIN {
write!(f, "- {}", colors.number("0x7fffffff"))
} else if i < 0 {
write!(f, "- {}", colors.number(u32_hex((-Wrapping(i)).0 as u32)))
} else {
write!(f, "+ {}", colors.number(u32_hex(i as u32)))
}
},
NumberStyleHint::HexSignedWithSign => {
write!(f, "{}", signed_i32_hex(i))
},
NumberStyleHint::SignedWithSign => {
write!(f, "{:+}", i)
}
NumberStyleHint::HexUnsignedWithSign => {
write!(f, "{:+#x}", i as u32)
},
NumberStyleHint::UnsignedWithSign => {
write!(f, "{:+}", i as u32)
}
}
}
#[deprecated(since="0.3.0", note="SignedHexDisplay does not optimize like expected and will be removed in the future. see DisplaySink instead.")]
pub struct SignedHexDisplay<T: core::fmt::LowerHex + Neg> {
value: T,
negative: bool
}
impl<T: fmt::LowerHex + Neg + Copy> fmt::Display for SignedHexDisplay<T> where Wrapping<T>: Neg, <Wrapping<T> as Neg>::Output: fmt::LowerHex {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
if self.negative {
write!(f, "-{:#x}", -Wrapping(self.value))
} else {
write!(f, "{:#x}", self.value)
}
}
}
#[deprecated(since="0.3.0", note="u8_hex does not optimize like expected and will be removed in the future. see DisplaySink instead.")]
pub fn u8_hex(value: u8) -> SignedHexDisplay<i8> {
SignedHexDisplay {
value: value as i8,
negative: false,
}
}
#[deprecated(since="0.3.0", note="signed_i8_hex does not optimize like expected and will be removed in the future. see DisplaySink instead.")]
pub fn signed_i8_hex(imm: i8) -> SignedHexDisplay<i8> {
SignedHexDisplay {
value: imm,
negative: imm < 0,
}
}
#[deprecated(since="0.3.0", note="u16_hex does not optimize like expected and will be removed in the future. see DisplaySink instead.")]
pub fn u16_hex(value: u16) -> SignedHexDisplay<i16> {
SignedHexDisplay {
value: value as i16,
negative: false,
}
}
#[deprecated(since="0.3.0", note="signed_i16_hex does not optimize like expected and will be removed in the future. see DisplaySink instead.")]
pub fn signed_i16_hex(imm: i16) -> SignedHexDisplay<i16> {
SignedHexDisplay {
value: imm,
negative: imm < 0,
}
}
#[deprecated(since="0.3.0", note="u32_hex does not optimize like expected and will be removed in the future. see DisplaySink instead.")]
pub fn u32_hex(value: u32) -> SignedHexDisplay<i32> {
SignedHexDisplay {
value: value as i32,
negative: false,
}
}
#[deprecated(since="0.3.0", note="signed_i32_hex does not optimize like expected and will be removed in the future. see DisplaySink instead.")]
pub fn signed_i32_hex(imm: i32) -> SignedHexDisplay<i32> {
SignedHexDisplay {
value: imm,
negative: imm < 0,
}
}
#[deprecated(since="0.3.0", note="u64_hex does not optimize like expected and will be removed in the future. see DisplaySink instead.")]
pub fn u64_hex(value: u64) -> SignedHexDisplay<i64> {
SignedHexDisplay {
value: value as i64,
negative: false,
}
}
#[deprecated(since="0.3.0", note="signed_i64_hex does not optimize like expected and will be removed in the future. see DisplaySink instead.")]
pub fn signed_i64_hex(imm: i64) -> SignedHexDisplay<i64> {
SignedHexDisplay {
value: imm,
negative: imm < 0,
}
}
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