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use crate::{Value, convert::{FromSql, ToSql, unexpected_type}, i256, types::Type}; use anyhow::*; #[derive(Clone, Copy, Eq, Hash, Ord, PartialEq, PartialOrd, Debug, Default)] pub struct FixedPoint32<const PRECISION: u64>(pub i32); impl<const PRECISION: u64> FixedPoint32<PRECISION> { pub const fn modulus(&self) -> i32 { 10i32.pow(PRECISION as u32) } pub fn integer(&self) -> i32 { self.0 / 10i32.pow(PRECISION as u32) } pub fn fraction(&self) -> i32 { self.0 % 10i32.pow(PRECISION as u32) } } impl<const PRECISION: u64> ToSql for FixedPoint32<PRECISION> { fn to_sql(self) -> Result<Value> { Ok(Value::Decimal32(PRECISION as usize, self.0)) } } impl<const PRECISION: u64> FromSql for FixedPoint32<PRECISION> { fn from_sql(type_: &Type, value: Value) -> Result<Self> { if !matches!(type_, Type::Decimal32(x) if *x == PRECISION as usize) { return Err(unexpected_type(type_)); } match value { Value::Decimal32(_, x) => Ok(Self(x)), _ => unimplemented!(), } } } impl<const PRECISION: u64> Into<f64> for FixedPoint32<PRECISION> { fn into(self) -> f64 { self.integer() as f64 + (self.fraction() as f64 / self.modulus() as f64) } } #[derive(Clone, Copy, Eq, Hash, Ord, PartialEq, PartialOrd, Debug, Default)] pub struct FixedPoint64<const PRECISION: u64>(pub i64); impl<const PRECISION: u64> ToSql for FixedPoint64<PRECISION> { fn to_sql(self) -> Result<Value> { Ok(Value::Decimal64(PRECISION as usize, self.0)) } } impl<const PRECISION: u64> FromSql for FixedPoint64<PRECISION> { fn from_sql(type_: &Type, value: Value) -> Result<Self> { if !matches!(type_, Type::Decimal64(x) if *x == PRECISION as usize) { return Err(unexpected_type(type_)); } match value { Value::Decimal64(_, x) => Ok(Self(x)), _ => unimplemented!(), } } } impl<const PRECISION: u64> FixedPoint64<PRECISION> { pub const fn modulus(&self) -> i64 { 10i64.pow(PRECISION as u32) } pub fn integer(&self) -> i64 { self.0 / 10i64.pow(PRECISION as u32) } pub fn fraction(&self) -> i64 { self.0 % 10i64.pow(PRECISION as u32) } } impl<const PRECISION: u64> Into<f64> for FixedPoint64<PRECISION> { fn into(self) -> f64 { self.integer() as f64 + (self.fraction() as f64 / self.modulus() as f64) } } #[derive(Clone, Copy, Eq, Hash, Ord, PartialEq, PartialOrd, Debug, Default)] pub struct FixedPoint128<const PRECISION: u64>(pub i128); impl<const PRECISION: u64> ToSql for FixedPoint128<PRECISION> { fn to_sql(self) -> Result<Value> { Ok(Value::Decimal128(PRECISION as usize, self.0)) } } impl<const PRECISION: u64> FromSql for FixedPoint128<PRECISION> { fn from_sql(type_: &Type, value: Value) -> Result<Self> { if !matches!(type_, Type::Decimal128(x) if *x == PRECISION as usize) { return Err(unexpected_type(type_)); } match value { Value::Decimal128(_, x) => Ok(Self(x)), _ => unimplemented!(), } } } impl<const PRECISION: u64> FixedPoint128<PRECISION> { pub const fn modulus(&self) -> i128 { 10i128.pow(PRECISION as u32) } pub fn integer(&self) -> i128 { self.0 / 10i128.pow(PRECISION as u32) } pub fn fraction(&self) -> i128 { self.0 % 10i128.pow(PRECISION as u32) } } impl<const PRECISION: u64> Into<f64> for FixedPoint128<PRECISION> { fn into(self) -> f64 { self.integer() as f64 + (self.fraction() as f64 / self.modulus() as f64) } } #[derive(Clone, Copy, Eq, Hash, Ord, PartialEq, PartialOrd, Debug, Default)] pub struct FixedPoint256<const PRECISION: u64>(pub i256); impl<const PRECISION: u64> ToSql for FixedPoint256<PRECISION> { fn to_sql(self) -> Result<Value> { Ok(Value::Decimal256(PRECISION as usize, self.0)) } } impl<const PRECISION: u64> FromSql for FixedPoint256<PRECISION> { fn from_sql(type_: &Type, value: Value) -> Result<Self> { if !matches!(type_, Type::Decimal256(x) if *x == PRECISION as usize) { return Err(unexpected_type(type_)); } match value { Value::Decimal256(_, x) => Ok(Self(x)), _ => unimplemented!(), } } }