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80 lines
2.1 KiB
80 lines
2.1 KiB
use std::fmt::{self, Display, Formatter};
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use std::ops::Not;
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#[derive(Clone, Copy, Debug, Eq, PartialEq, Hash)]
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pub enum Cond {
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Equal,
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NotEqual,
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Zero,
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NotZero,
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Lower,
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LowerOrEqual,
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Greater,
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GreaterOrEqual,
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Positive,
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NonPositive,
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Negative,
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NonNegative,
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Overflow,
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NotOverflow,
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Invalid,
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Valid,
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Carry,
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NotCarry,
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}
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impl Display for Cond {
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fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
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f.write_str(match self {
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Cond::Equal => "eq",
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Cond::NotEqual => "ne",
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Cond::Zero => "z",
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Cond::NotZero => "nz",
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Cond::Lower => "lt",
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Cond::LowerOrEqual => "le",
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Cond::Greater => "gt",
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Cond::GreaterOrEqual => "ge",
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Cond::Positive => "pos",
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Cond::Negative => "neg",
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Cond::NonPositive => "npos",
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Cond::NonNegative => "nneg",
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Cond::Overflow => "ov",
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Cond::NotOverflow => "nov",
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Cond::Carry => "c",
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Cond::NotCarry => "nc",
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Cond::Invalid => "inval",
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Cond::Valid => "ok",
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})
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}
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}
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impl Not for Cond {
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type Output = Cond;
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fn not(self) -> Self::Output {
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match self {
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Cond::Equal => Cond::NotEqual,
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Cond::Zero => Cond::NotZero,
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Cond::Overflow => Cond::NotOverflow,
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Cond::Carry => Cond::NotCarry,
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Cond::Positive => Cond::NonPositive,
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Cond::Negative => Cond::NonNegative,
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Cond::NonPositive => Cond::Positive,
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Cond::NonNegative => Cond::Negative,
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Cond::NotEqual => Cond::Equal,
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Cond::NotZero => Cond::Zero,
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Cond::NotOverflow => Cond::Overflow,
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Cond::NotCarry => Cond::Carry,
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Cond::Lower => Cond::GreaterOrEqual,
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Cond::Greater => Cond::LowerOrEqual,
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Cond::LowerOrEqual => Cond::Greater,
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Cond::GreaterOrEqual => Cond::Lower,
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Cond::Invalid => Cond::Valid,
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Cond::Valid => Cond::Invalid,
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}
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}
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}
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