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use std::fmt;
use serde::{Deserialize, Serialize};
use mz_lowertest::MzReflect;
use mz_repr::adt::numeric::{self, Numeric, NumericMaxScale};
use mz_repr::{strconv, ColumnType, ScalarType};
use crate::scalar::func::EagerUnaryFunc;
use crate::EvalError;
sqlfunc!(
#[sqlname = "~"]
#[preserves_uniqueness = true]
#[inverse = to_unary!(super::BitNotUint32)]
fn bit_not_uint32(a: u32) -> u32 {
!a
}
);
sqlfunc!(
#[sqlname = "uint4_to_real"]
#[preserves_uniqueness = false]
#[inverse = to_unary!(super::CastFloat32ToUint32)]
fn cast_uint32_to_float32(a: u32) -> f32 {
#[allow(clippy::as_conversions)]
{
a as f32
}
}
);
sqlfunc!(
#[sqlname = "uint4_to_double"]
#[preserves_uniqueness = true]
#[inverse = to_unary!(super::CastFloat64ToUint32)]
fn cast_uint32_to_float64(a: u32) -> f64 {
f64::from(a)
}
);
sqlfunc!(
#[sqlname = "uint4_to_uint2"]
#[preserves_uniqueness = true]
#[inverse = to_unary!(super::CastUint16ToUint32)]
fn cast_uint32_to_uint16(a: u32) -> Result<u16, EvalError> {
u16::try_from(a).or(Err(EvalError::UInt16OutOfRange))
}
);
sqlfunc!(
#[sqlname = "uint4_to_uint8"]
#[preserves_uniqueness = true]
#[inverse = to_unary!(super::CastUint64ToUint32)]
fn cast_uint32_to_uint64(a: u32) -> u64 {
u64::from(a)
}
);
sqlfunc!(
#[sqlname = "uint4_to_smallint"]
#[preserves_uniqueness = true]
#[inverse = to_unary!(super::CastInt16ToUint32)]
fn cast_uint32_to_int16(a: u32) -> Result<i16, EvalError> {
i16::try_from(a).or(Err(EvalError::Int16OutOfRange))
}
);
sqlfunc!(
#[sqlname = "uint4_to_integer"]
#[preserves_uniqueness = true]
#[inverse = to_unary!(super::CastInt32ToUint32)]
fn cast_uint32_to_int32(a: u32) -> Result<i32, EvalError> {
i32::try_from(a).or(Err(EvalError::Int32OutOfRange))
}
);
sqlfunc!(
#[sqlname = "uint4_to_bigint"]
#[preserves_uniqueness = true]
#[inverse = to_unary!(super::CastInt64ToUint32)]
fn cast_uint32_to_int64(a: u32) -> i64 {
i64::from(a)
}
);
sqlfunc!(
#[sqlname = "uint4_to_text"]
#[preserves_uniqueness = true]
#[inverse = to_unary!(super::CastStringToUint32)]
fn cast_uint32_to_string(a: u32) -> String {
let mut buf = String::new();
strconv::format_uint32(&mut buf, a);
buf
}
);
#[derive(Ord, PartialOrd, Clone, Debug, Eq, PartialEq, Serialize, Deserialize, Hash, MzReflect)]
pub struct CastUint32ToNumeric(pub Option<NumericMaxScale>);
impl<'a> EagerUnaryFunc<'a> for CastUint32ToNumeric {
type Input = u32;
type Output = Result<Numeric, EvalError>;
fn call(&self, a: u32) -> Result<Numeric, EvalError> {
let mut a = Numeric::from(a);
if let Some(scale) = self.0 {
if numeric::rescale(&mut a, scale.into_u8()).is_err() {
return Err(EvalError::NumericFieldOverflow);
}
}
Ok(a)
}
fn output_type(&self, input: ColumnType) -> ColumnType {
ScalarType::Numeric { max_scale: self.0 }.nullable(input.nullable)
}
fn inverse(&self) -> Option<crate::UnaryFunc> {
to_unary!(super::CastNumericToUint32)
}
}
impl fmt::Display for CastUint32ToNumeric {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
f.write_str("uint4_to_numeric")
}
}