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use crate::YaxColors; use core::fmt; use core::num::Wrapping; use core::ops::Neg; pub enum NumberStyleHint { Signed, HexSigned, SignedWithSign, HexSignedWithSign, SignedWithSignSplit, HexSignedWithSignSplit, Unsigned, HexUnsigned, UnsignedWithSign, HexUnsignedWithSign } 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) } } } 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) } } } pub fn u8_hex(value: u8) -> SignedHexDisplay<i8> { SignedHexDisplay { value: value as i8, negative: false, } } pub fn signed_i8_hex(imm: i8) -> SignedHexDisplay<i8> { SignedHexDisplay { value: imm, negative: imm < 0, } } pub fn u16_hex(value: u16) -> SignedHexDisplay<i16> { SignedHexDisplay { value: value as i16, negative: false, } } pub fn signed_i16_hex(imm: i16) -> SignedHexDisplay<i16> { SignedHexDisplay { value: imm, negative: imm < 0, } } pub fn u32_hex(value: u32) -> SignedHexDisplay<i32> { SignedHexDisplay { value: value as i32, negative: false, } } pub fn signed_i32_hex(imm: i32) -> SignedHexDisplay<i32> { SignedHexDisplay { value: imm, negative: imm < 0, } } pub fn u64_hex(value: u64) -> SignedHexDisplay<i64> { SignedHexDisplay { value: value as i64, negative: false, } } pub fn signed_i64_hex(imm: i64) -> SignedHexDisplay<i64> { SignedHexDisplay { value: imm, negative: imm < 0, } }