array_object/convert/into_integer.rs
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use crate::adaptor::*;
use crate::convert::zigzag::Zigzag;
use crate::error::ArrayObjectError;
use crate::storage::*;
macro_rules! into_integer {
($($ty:tt),*) => {
$(
impl TryFrom<ArrayObject> for $ty {
type Error = ArrayObjectError;
fn try_from(val: ArrayObject) -> Result<Self, Self::Error> {
if !val.shape.is_empty() {
return Err(ArrayObjectError::WrongDataType(val.datatype, val.shape.len()));
}
if val.datatype == DataType::UnsignedInteger {
match val.data.len() {
1 => {
let data = u8::from_le_bytes(val.data.try_into().unwrap()).try_into()
.or(Err(ArrayObjectError::IncompatibleConversion(false, 8)))?;
Ok(data)
}
2 => {
let data = u16::from_le_bytes(val.data.try_into().unwrap()).try_into()
.or(Err(ArrayObjectError::IncompatibleConversion(false, 16)))?;
Ok(data)
}
4 => {
let data = u32::from_le_bytes(val.data.try_into().unwrap()).try_into()
.or(Err(ArrayObjectError::IncompatibleConversion(false, 32)))?;
Ok(data)
}
8 => {
let data = u64::from_le_bytes(val.data.try_into().unwrap()).try_into()
.or(Err(ArrayObjectError::IncompatibleConversion(false, 64)))?;
Ok(data)
}
16 => {
let data = u128::from_le_bytes(val.data.try_into().unwrap()).try_into()
.or(Err(ArrayObjectError::IncompatibleConversion(false, 128)))?;
Ok(data)
}
_ => {panic!();}
}
} else if val.datatype == DataType::SignedInteger {
match val.data.len() {
1 => {
let data = i8::from_le_bytes(val.data.try_into().unwrap()).straight().try_into()
.or(Err(ArrayObjectError::IncompatibleConversion(true, 8)))?;
Ok(data)
}
2 => {
let data = i16::from_le_bytes(val.data.try_into().unwrap()).straight().try_into()
.or(Err(ArrayObjectError::IncompatibleConversion(true, 16)))?;
Ok(data)
}
4 => {
let data = i32::from_le_bytes(val.data.try_into().unwrap()).straight().try_into()
.or(Err(ArrayObjectError::IncompatibleConversion(true, 32)))?;
Ok(data)
}
8 => {
let data = i64::from_le_bytes(val.data.try_into().unwrap()).straight().try_into()
.or(Err(ArrayObjectError::IncompatibleConversion(true, 64)))?;
Ok(data)
}
16 => {
let data = i128::from_le_bytes(val.data.try_into().unwrap()).straight().try_into()
.or(Err(ArrayObjectError::IncompatibleConversion(true, 128)))?;
Ok(data)
}
_ => {panic!();}
}
} else {
return Err(ArrayObjectError::WrongDataType(val.datatype, val.shape.len()));
}
}
}
impl TryFrom<ArrayObject> for VecShape<$ty> {
type Error = ArrayObjectError;
fn try_from(val: ArrayObject) -> Result<Self, Self::Error> {
if val.shape.is_empty() {
return Err(ArrayObjectError::WrongDataType(val.datatype, val.shape.len()));
}
let len = val.len();
if len == 0 {
return Ok(VecShape(vec![], val.shape));
}
if val.datatype == DataType::UnsignedInteger {
match val.data.len() / len {
1 => {
let mut data = Vec::with_capacity(len);
for b in val.data.chunks(1) {
data.push(u8::from_le_bytes(b.try_into().unwrap()).try_into()
.or(Err(ArrayObjectError::IncompatibleConversion(false, 8)))?);
}
Ok(VecShape(data, val.shape))
}
2 => {
let mut data = Vec::with_capacity(len);
for b in val.data.chunks(2) {
data.push(u16::from_le_bytes(b.try_into().unwrap()).try_into()
.or(Err(ArrayObjectError::IncompatibleConversion(false, 16)))?);
}
Ok(VecShape(data, val.shape))
}
4 => {
let mut data = Vec::with_capacity(len);
for b in val.data.chunks(4) {
data.push(u32::from_le_bytes(b.try_into().unwrap()).try_into()
.or(Err(ArrayObjectError::IncompatibleConversion(false, 32)))?);
}
Ok(VecShape(data, val.shape))
}
8 => {
let mut data = Vec::with_capacity(len);
for b in val.data.chunks(8) {
data.push(u64::from_le_bytes(b.try_into().unwrap()).try_into()
.or(Err(ArrayObjectError::IncompatibleConversion(false, 64)))?);
}
Ok(VecShape(data, val.shape))
}
16 => {
let mut data = Vec::with_capacity(len);
for b in val.data.chunks(16) {
data.push(u128::from_le_bytes(b.try_into().unwrap()).try_into()
.or(Err(ArrayObjectError::IncompatibleConversion(false, 128)))?);
}
Ok(VecShape(data, val.shape))
}
_ => {panic!();}
}
} else if val.datatype == DataType::SignedInteger {
match val.data.len() / len {
1 => {
let mut data = Vec::with_capacity(len);
for b in val.data.chunks(1) {
data.push(i8::from_le_bytes(b.try_into().unwrap()).straight().try_into()
.or(Err(ArrayObjectError::IncompatibleConversion(true, 8)))?);
}
Ok(VecShape(data, val.shape))
}
2 => {
let mut data = Vec::with_capacity(len);
for b in val.data.chunks(2) {
data.push(i16::from_le_bytes(b.try_into().unwrap()).straight().try_into()
.or(Err(ArrayObjectError::IncompatibleConversion(true, 16)))?);
}
Ok(VecShape(data, val.shape))
}
4 => {
let mut data = Vec::with_capacity(len);
for b in val.data.chunks(4) {
data.push(i32::from_le_bytes(b.try_into().unwrap()).straight().try_into()
.or(Err(ArrayObjectError::IncompatibleConversion(true, 32)))?);
}
Ok(VecShape(data, val.shape))
}
8 => {
let mut data = Vec::with_capacity(len);
for b in val.data.chunks(8) {
data.push(i64::from_le_bytes(b.try_into().unwrap()).straight().try_into()
.or(Err(ArrayObjectError::IncompatibleConversion(true, 64)))?);
}
Ok(VecShape(data, val.shape))
}
16 => {
let mut data = Vec::with_capacity(len);
for b in val.data.chunks(16) {
data.push(i128::from_le_bytes(b.try_into().unwrap()).straight().try_into()
.or(Err(ArrayObjectError::IncompatibleConversion(true, 128)))?);
}
Ok(VecShape(data, val.shape))
}
_ => {panic!();}
}
} else {
return Err(ArrayObjectError::WrongDataType(val.datatype, val.shape.len()));
}
}
}
impl TryFrom<ArrayObject> for Vec<$ty> {
type Error = ArrayObjectError;
fn try_from(val: ArrayObject) -> Result<Self, Self::Error> {
if val.shape.len() != 1 {
return Err(ArrayObjectError::WrongDataType(val.datatype, val.shape.len()));
}
let VecShape::<$ty>(data, _) = val.try_into()?;
Ok(data)
}
}
)*
}
}
into_integer!(i8, i16, i32, i64, i128, u8, u16, u32, u64, u128);