Fixed error in trait constraint in compute

src/compute/arithmetics/basic/add.rs

@@ -9,15 +9,15 @@ use crate::{
     compute::{
         arithmetics::{
             ArrayAdd, ArrayCheckedAdd, ArrayOverflowingAdd, ArraySaturatingAdd, ArrayWrappingAdd,
-            NativeArithmetics,
         },
         arity::{
             binary, binary_checked, binary_with_bitmap, unary, unary_checked, unary_with_bitmap,
         },
     },
-    types::NativeType,
 };
 
+use super::NativeArithmetics;
+
 /// Adds two primitive arrays with the same type.
 /// Panics if the sum of one pair of values overflows.
 ///
@@ -34,7 +34,7 @@ use crate::{
 /// ```
 pub fn add<T>(lhs: &PrimitiveArray<T>, rhs: &PrimitiveArray<T>) -> PrimitiveArray<T>
 where
-    T: NativeType + Add<Output = T>,
+    T: NativeArithmetics + Add<Output = T>,
 {
     binary(lhs, rhs, lhs.data_type().clone(), |a, b| a + b)
 }
@@ -55,7 +55,7 @@ where
 /// ```
 pub fn wrapping_add<T>(lhs: &PrimitiveArray<T>, rhs: &PrimitiveArray<T>) -> PrimitiveArray<T>
 where
-    T: NativeType + WrappingAdd<Output = T>,
+    T: NativeArithmetics + WrappingAdd<Output = T>,
 {
     let op = move |a: T, b: T| a.wrapping_add(&b);
 
@@ -78,7 +78,7 @@ where
 /// ```
 pub fn checked_add<T>(lhs: &PrimitiveArray<T>, rhs: &PrimitiveArray<T>) -> PrimitiveArray<T>
 where
-    T: NativeType + CheckedAdd<Output = T>,
+    T: NativeArithmetics + CheckedAdd<Output = T>,
 {
     let op = move |a: T, b: T| a.checked_add(&b);
 
@@ -102,7 +102,7 @@ where
 /// ```
 pub fn saturating_add<T>(lhs: &PrimitiveArray<T>, rhs: &PrimitiveArray<T>) -> PrimitiveArray<T>
 where
-    T: NativeType + SaturatingAdd<Output = T>,
+    T: NativeArithmetics + SaturatingAdd<Output = T>,
 {
     let op = move |a: T, b: T| a.saturating_add(&b);
 
@@ -130,7 +130,7 @@ pub fn overflowing_add<T>(
     rhs: &PrimitiveArray<T>,
 ) -> (PrimitiveArray<T>, Bitmap)
 where
-    T: NativeType + OverflowingAdd<Output = T>,
+    T: NativeArithmetics + OverflowingAdd<Output = T>,
 {
     let op = move |a: T, b: T| a.overflowing_add(&b);
 
@@ -201,7 +201,7 @@ where
 /// ```
 pub fn add_scalar<T>(lhs: &PrimitiveArray<T>, rhs: &T) -> PrimitiveArray<T>
 where
-    T: NativeType + Add<Output = T>,
+    T: NativeArithmetics + Add<Output = T>,
 {
     let rhs = *rhs;
     unary(lhs, |a| a + rhs, lhs.data_type().clone())
@@ -222,7 +222,7 @@ where
 /// ```
 pub fn wrapping_add_scalar<T>(lhs: &PrimitiveArray<T>, rhs: &T) -> PrimitiveArray<T>
 where
-    T: NativeType + WrappingAdd<Output = T>,
+    T: NativeArithmetics + WrappingAdd<Output = T>,
 {
     unary(lhs, |a| a.wrapping_add(rhs), lhs.data_type().clone())
 }
@@ -243,7 +243,7 @@ where
 /// ```
 pub fn checked_add_scalar<T>(lhs: &PrimitiveArray<T>, rhs: &T) -> PrimitiveArray<T>
 where
-    T: NativeType + CheckedAdd<Output = T>,
+    T: NativeArithmetics + CheckedAdd<Output = T>,
 {
     let rhs = *rhs;
     let op = move |a: T| a.checked_add(&rhs);
@@ -267,7 +267,7 @@ where
 /// ```
 pub fn saturating_add_scalar<T>(lhs: &PrimitiveArray<T>, rhs: &T) -> PrimitiveArray<T>
 where
-    T: NativeType + SaturatingAdd<Output = T>,
+    T: NativeArithmetics + SaturatingAdd<Output = T>,
 {
     let rhs = *rhs;
     let op = move |a: T| a.saturating_add(&rhs);
@@ -292,7 +292,7 @@ where
 /// ```
 pub fn overflowing_add_scalar<T>(lhs: &PrimitiveArray<T>, rhs: &T) -> (PrimitiveArray<T>, Bitmap)
 where
-    T: NativeType + OverflowingAdd<Output = T>,
+    T: NativeArithmetics + OverflowingAdd<Output = T>,
 {
     let rhs = *rhs;
     let op = move |a: T| a.overflowing_add(&rhs);

src/compute/arithmetics/basic/div.rs

@@ -7,16 +7,17 @@ use crate::datatypes::DataType;
 use crate::{
     array::{Array, PrimitiveArray},
     compute::{
-        arithmetics::{ArrayCheckedDiv, ArrayDiv, NativeArithmetics},
+        arithmetics::{ArrayCheckedDiv, ArrayDiv},
         arity::{binary, binary_checked, unary, unary_checked},
         utils::check_same_len,
     },
-    types::NativeType,
 };
 use strength_reduce::{
     StrengthReducedU16, StrengthReducedU32, StrengthReducedU64, StrengthReducedU8,
 };
 
+use super::NativeArithmetics;
+
 /// Divides two primitive arrays with the same type.
 /// Panics if the divisor is zero of one pair of values overflows.
 ///
@@ -33,7 +34,7 @@ use strength_reduce::{
 /// ```
 pub fn div<T>(lhs: &PrimitiveArray<T>, rhs: &PrimitiveArray<T>) -> PrimitiveArray<T>
 where
-    T: NativeType + Div<Output = T>,
+    T: NativeArithmetics + Div<Output = T>,
 {
     if rhs.null_count() == 0 {
         binary(lhs, rhs, lhs.data_type().clone(), |a, b| a / b)
@@ -107,7 +108,7 @@ where
 /// ```
 pub fn div_scalar<T>(lhs: &PrimitiveArray<T>, rhs: &T) -> PrimitiveArray<T>
 where
-    T: NativeType + Div<Output = T> + NumCast,
+    T: NativeArithmetics + Div<Output = T> + NumCast,
 {
     let rhs = *rhs;
     match T::DATA_TYPE {
@@ -190,7 +191,7 @@ where
 /// ```
 pub fn checked_div_scalar<T>(lhs: &PrimitiveArray<T>, rhs: &T) -> PrimitiveArray<T>
 where
-    T: NativeType + CheckedDiv<Output = T> + Zero,
+    T: NativeArithmetics + CheckedDiv<Output = T> + Zero,
 {
     let rhs = *rhs;
     let op = move |a: T| a.checked_div(&rhs);
@@ -201,7 +202,7 @@ where
 // Implementation of ArrayDiv trait for PrimitiveArrays with a scalar
 impl<T> ArrayDiv<T> for PrimitiveArray<T>
 where
-    T: NativeType + Div<Output = T> + NativeArithmetics + NumCast,
+    T: NativeArithmetics + Div<Output = T> + NativeArithmetics + NumCast,
 {
     fn div(&self, rhs: &T) -> Self {
         div_scalar(self, rhs)
@@ -211,7 +212,7 @@ where
 // Implementation of ArrayCheckedDiv trait for PrimitiveArrays with a scalar
 impl<T> ArrayCheckedDiv<T> for PrimitiveArray<T>
 where
-    T: NativeType + CheckedDiv<Output = T> + Zero + NativeArithmetics,
+    T: NativeArithmetics + CheckedDiv<Output = T> + Zero + NativeArithmetics,
 {
     fn checked_div(&self, rhs: &T) -> Self {
         checked_div_scalar(self, rhs)

src/compute/arithmetics/basic/mod.rs

@@ -29,6 +29,22 @@ use crate::{
 
 use super::super::arity::{unary, unary_checked};
 
+/// Trait describing a [`NativeType`] whose semantics of arithmetic in Arrow equals
+/// the semantics in Rust.
+/// A counter example is `i128`, that in arrow represents a decimal while in rust represents
+/// a signed integer.
+pub trait NativeArithmetics: NativeType {}
+impl NativeArithmetics for u8 {}
+impl NativeArithmetics for u16 {}
+impl NativeArithmetics for u32 {}
+impl NativeArithmetics for u64 {}
+impl NativeArithmetics for i8 {}
+impl NativeArithmetics for i16 {}
+impl NativeArithmetics for i32 {}
+impl NativeArithmetics for i64 {}
+impl NativeArithmetics for f32 {}
+impl NativeArithmetics for f64 {}
+
 /// Negates values from array.
 ///
 /// # Examples

src/compute/arithmetics/basic/mul.rs

@@ -9,15 +9,15 @@ use crate::{
     compute::{
         arithmetics::{
             ArrayCheckedMul, ArrayMul, ArrayOverflowingMul, ArraySaturatingMul, ArrayWrappingMul,
-            NativeArithmetics,
         },
         arity::{
             binary, binary_checked, binary_with_bitmap, unary, unary_checked, unary_with_bitmap,
         },
     },
-    types::NativeType,
 };
 
+use super::NativeArithmetics;
+
 /// Multiplies two primitive arrays with the same type.
 /// Panics if the multiplication of one pair of values overflows.
 ///
@@ -34,7 +34,7 @@ use crate::{
 /// ```
 pub fn mul<T>(lhs: &PrimitiveArray<T>, rhs: &PrimitiveArray<T>) -> PrimitiveArray<T>
 where
-    T: NativeType + Mul<Output = T>,
+    T: NativeArithmetics + Mul<Output = T>,
 {
     binary(lhs, rhs, lhs.data_type().clone(), |a, b| a * b)
 }
@@ -55,7 +55,7 @@ where
 /// ```
 pub fn wrapping_mul<T>(lhs: &PrimitiveArray<T>, rhs: &PrimitiveArray<T>) -> PrimitiveArray<T>
 where
-    T: NativeType + WrappingMul<Output = T>,
+    T: NativeArithmetics + WrappingMul<Output = T>,
 {
     let op = move |a: T, b: T| a.wrapping_mul(&b);
 
@@ -79,7 +79,7 @@ where
 /// ```
 pub fn checked_mul<T>(lhs: &PrimitiveArray<T>, rhs: &PrimitiveArray<T>) -> PrimitiveArray<T>
 where
-    T: NativeType + CheckedMul<Output = T>,
+    T: NativeArithmetics + CheckedMul<Output = T>,
 {
     let op = move |a: T, b: T| a.checked_mul(&b);
 
@@ -103,7 +103,7 @@ where
 /// ```
 pub fn saturating_mul<T>(lhs: &PrimitiveArray<T>, rhs: &PrimitiveArray<T>) -> PrimitiveArray<T>
 where
-    T: NativeType + SaturatingMul<Output = T>,
+    T: NativeArithmetics + SaturatingMul<Output = T>,
 {
     let op = move |a: T, b: T| a.saturating_mul(&b);
 
@@ -131,7 +131,7 @@ pub fn overflowing_mul<T>(
     rhs: &PrimitiveArray<T>,
 ) -> (PrimitiveArray<T>, Bitmap)
 where
-    T: NativeType + OverflowingMul<Output = T>,
+    T: NativeArithmetics + OverflowingMul<Output = T>,
 {
     let op = move |a: T, b: T| a.overflowing_mul(&b);
 
@@ -202,7 +202,7 @@ where
 /// ```
 pub fn mul_scalar<T>(lhs: &PrimitiveArray<T>, rhs: &T) -> PrimitiveArray<T>
 where
-    T: NativeType + Mul<Output = T>,
+    T: NativeArithmetics + Mul<Output = T>,
 {
     let rhs = *rhs;
     unary(lhs, |a| a * rhs, lhs.data_type().clone())
@@ -223,7 +223,7 @@ where
 /// ```
 pub fn wrapping_mul_scalar<T>(lhs: &PrimitiveArray<T>, rhs: &T) -> PrimitiveArray<T>
 where
-    T: NativeType + WrappingMul<Output = T>,
+    T: NativeArithmetics + WrappingMul<Output = T>,
 {
     unary(lhs, |a| a.wrapping_mul(rhs), lhs.data_type().clone())
 }
@@ -244,7 +244,7 @@ where
 /// ```
 pub fn checked_mul_scalar<T>(lhs: &PrimitiveArray<T>, rhs: &T) -> PrimitiveArray<T>
 where
-    T: NativeType + CheckedMul<Output = T>,
+    T: NativeArithmetics + CheckedMul<Output = T>,
 {
     let rhs = *rhs;
     let op = move |a: T| a.checked_mul(&rhs);
@@ -268,7 +268,7 @@ where
 /// ```
 pub fn saturating_mul_scalar<T>(lhs: &PrimitiveArray<T>, rhs: &T) -> PrimitiveArray<T>
 where
-    T: NativeType + SaturatingMul<Output = T>,
+    T: NativeArithmetics + SaturatingMul<Output = T>,
 {
     let rhs = *rhs;
     let op = move |a: T| a.saturating_mul(&rhs);
@@ -293,7 +293,7 @@ where
 /// ```
 pub fn overflowing_mul_scalar<T>(lhs: &PrimitiveArray<T>, rhs: &T) -> (PrimitiveArray<T>, Bitmap)
 where
-    T: NativeType + OverflowingMul<Output = T>,
+    T: NativeArithmetics + OverflowingMul<Output = T>,
 {
     let rhs = *rhs;
     let op = move |a: T| a.overflowing_mul(&rhs);
@@ -304,7 +304,7 @@ where
 // Implementation of ArrayMul trait for PrimitiveArrays with a scalar
 impl<T> ArrayMul<T> for PrimitiveArray<T>
 where
-    T: NativeType + Mul<Output = T> + NativeArithmetics,
+    T: NativeArithmetics + Mul<Output = T> + NativeArithmetics,
 {
     fn mul(&self, rhs: &T) -> Self {
         mul_scalar(self, rhs)

src/compute/arithmetics/basic/pow.rs

@@ -4,9 +4,10 @@ use num_traits::{checked_pow, CheckedMul, One, Pow, Zero};
 use crate::{
     array::{Array, PrimitiveArray},
     compute::arity::{unary, unary_checked},
-    types::NativeType,
 };
 
+use super::NativeArithmetics;
+
 /// Raises an array of primitives to the power of exponent. Panics if one of
 /// the values values overflows.
 ///
@@ -22,7 +23,7 @@ use crate::{
 /// ```
 pub fn powf_scalar<T>(array: &PrimitiveArray<T>, exponent: T) -> PrimitiveArray<T>
 where
-    T: NativeType + Pow<T, Output = T>,
+    T: NativeArithmetics + Pow<T, Output = T>,
 {
     unary(array, |x| x.pow(exponent), array.data_type().clone())
 }
@@ -43,7 +44,7 @@ where
 /// ```
 pub fn checked_powf_scalar<T>(array: &PrimitiveArray<T>, exponent: usize) -> PrimitiveArray<T>
 where
-    T: NativeType + Zero + One + CheckedMul,
+    T: NativeArithmetics + Zero + One + CheckedMul,
 {
     let op = move |a: T| checked_pow(a, exponent);
 

src/compute/arithmetics/basic/rem.rs

@@ -6,15 +6,16 @@ use crate::datatypes::DataType;
 use crate::{
     array::{Array, PrimitiveArray},
     compute::{
-        arithmetics::{ArrayCheckedRem, ArrayRem, NativeArithmetics},
+        arithmetics::{ArrayCheckedRem, ArrayRem},
         arity::{binary, binary_checked, unary, unary_checked},
     },
-    types::NativeType,
 };
 use strength_reduce::{
     StrengthReducedU16, StrengthReducedU32, StrengthReducedU64, StrengthReducedU8,
 };
 
+use super::NativeArithmetics;
+
 /// Remainder of two primitive arrays with the same type.
 /// Panics if the divisor is zero of one pair of values overflows.
 ///
@@ -31,7 +32,7 @@ use strength_reduce::{
 /// ```
 pub fn rem<T>(lhs: &PrimitiveArray<T>, rhs: &PrimitiveArray<T>) -> PrimitiveArray<T>
 where
-    T: NativeType + Rem<Output = T>,
+    T: NativeArithmetics + Rem<Output = T>,
 {
     binary(lhs, rhs, lhs.data_type().clone(), |a, b| a % b)
 }
@@ -53,7 +54,7 @@ where
 /// ```
 pub fn checked_rem<T>(lhs: &PrimitiveArray<T>, rhs: &PrimitiveArray<T>) -> PrimitiveArray<T>
 where
-    T: NativeType + CheckedRem<Output = T>,
+    T: NativeArithmetics + CheckedRem<Output = T>,
 {
     let op = move |a: T, b: T| a.checked_rem(&b);
 
@@ -93,7 +94,7 @@ where
 /// ```
 pub fn rem_scalar<T>(lhs: &PrimitiveArray<T>, rhs: &T) -> PrimitiveArray<T>
 where
-    T: NativeType + Rem<Output = T> + NumCast,
+    T: NativeArithmetics + Rem<Output = T> + NumCast,
 {
     let rhs = *rhs;
 
@@ -177,7 +178,7 @@ where
 /// ```
 pub fn checked_rem_scalar<T>(lhs: &PrimitiveArray<T>, rhs: &T) -> PrimitiveArray<T>
 where
-    T: NativeType + CheckedRem<Output = T>,
+    T: NativeArithmetics + CheckedRem<Output = T>,
 {
     let rhs = *rhs;
     let op = move |a: T| a.checked_rem(&rhs);