63 lines
2.1 KiB
Rust
63 lines
2.1 KiB
Rust
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//! Macro definitions for Box operator implementations
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//!
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//! This module contains the macro system for generating static trait implementations
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//! for numeric Box types (IntegerBox, FloatBox, etc.)
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// Note: The traits and OperatorError are used within the macro expansion,
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// so they appear unused to the compiler but are actually required.
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/// Generate static numeric operator implementations for a given Box type
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///
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/// This macro creates implementations of NyashAdd, NyashSub, NyashMul, and NyashDiv
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/// for the specified type, with built-in error handling (e.g., division by zero).
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///
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/// # Arguments
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///
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/// * `$ty` - The Box type to implement operators for (e.g., IntegerBox, FloatBox)
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/// * `$zero` - The zero value for the type (e.g., 0 for integers, 0.0 for floats)
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///
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/// # Example
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///
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/// ```rust
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/// impl_static_numeric_ops!(IntegerBox, 0);
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/// impl_static_numeric_ops!(FloatBox, 0.0);
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/// ```
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#[macro_export]
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macro_rules! impl_static_numeric_ops {
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($ty:ty, $zero:expr) => {
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impl crate::operator_traits::NyashAdd<$ty> for $ty {
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type Output = $ty;
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fn add(self, rhs: $ty) -> Self::Output {
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< $ty >::new(self.value + rhs.value)
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}
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}
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impl crate::operator_traits::NyashSub<$ty> for $ty {
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type Output = $ty;
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fn sub(self, rhs: $ty) -> Self::Output {
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< $ty >::new(self.value - rhs.value)
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}
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}
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impl crate::operator_traits::NyashMul<$ty> for $ty {
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type Output = $ty;
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fn mul(self, rhs: $ty) -> Self::Output {
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< $ty >::new(self.value * rhs.value)
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}
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}
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impl crate::operator_traits::NyashDiv<$ty> for $ty {
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type Output = Result<$ty, crate::operator_traits::OperatorError>;
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fn div(self, rhs: $ty) -> Self::Output {
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if rhs.value == $zero {
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Err(crate::operator_traits::OperatorError::DivisionByZero)
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} else {
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Ok(< $ty >::new(self.value / rhs.value))
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}
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}
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}
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};
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}
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// Re-export the macro for external use
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pub use impl_static_numeric_ops;
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