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Change ValueType trait and add basic fs

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This commit is contained in:
Lachlan Sneff
2019-04-01 15:52:35 -07:00
parent c12c7d558c
commit ce35e5794f
8 changed files with 186 additions and 217 deletions
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46
lib/runtime-core/src/types.rs
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@ -126,34 +126,14 @@ unsafe impl WasmExternType for f64 {
// fn swap(&self, other: Self::Primitive) -> Self::Primitive;
// }
pub enum ValueError {
BufferTooSmall,
}
pub trait ValueType: Copy
pub unsafe trait ValueType: Copy
where
Self: Sized,
{
fn into_le(self, buffer: &mut [u8]);
fn from_le(buffer: &[u8]) -> Result<Self, ValueError>;
}
{}
macro_rules! convert_value_impl {
($t:ty) => {
impl ValueType for $t {
fn into_le(self, buffer: &mut [u8]) {
buffer[..mem::size_of::<Self>()].copy_from_slice(&self.to_le_bytes());
}
fn from_le(buffer: &[u8]) -> Result<Self, ValueError> {
if buffer.len() >= mem::size_of::<Self>() {
let mut array = [0u8; mem::size_of::<Self>()];
array.copy_from_slice(&buffer[..mem::size_of::<Self>()]);
Ok(Self::from_le_bytes(array))
} else {
Err(ValueError::BufferTooSmall)
}
}
}
unsafe impl ValueType for $t {}
};
( $($t:ty),* ) => {
$(
@ -162,25 +142,7 @@ macro_rules! convert_value_impl {
};
}
convert_value_impl!(u8, i8, u16, i16, u32, i32, u64, i64);
impl ValueType for f32 {
fn into_le(self, buffer: &mut [u8]) {
self.to_bits().into_le(buffer);
}
fn from_le(buffer: &[u8]) -> Result<Self, ValueError> {
Ok(f32::from_bits(<u32 as ValueType>::from_le(buffer)?))
}
}
impl ValueType for f64 {
fn into_le(self, buffer: &mut [u8]) {
self.to_bits().into_le(buffer);
}
fn from_le(buffer: &[u8]) -> Result<Self, ValueError> {
Ok(f64::from_bits(<u64 as ValueType>::from_le(buffer)?))
}
}
convert_value_impl!(u8, i8, u16, i16, u32, i32, u64, i64, f32, f64);
#[derive(Serialize, Deserialize, Debug, Clone, Copy, PartialEq, Eq)]
pub enum ElementType {