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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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20
lib/wasi/src/ptr.rs
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@ -1,7 +1,7 @@
use std::{cell::Cell, fmt, marker::PhantomData, mem};
use wasmer_runtime_core::{
memory::Memory,
types::{Type, ValueError, ValueType, WasmExternType},
types::{Type, ValueType, WasmExternType},
};
pub struct Array;
@ -68,23 +68,7 @@ unsafe impl<T: Copy, Ty> WasmExternType for WasmPtr<T, Ty> {
const TYPE: Type = Type::I32;
}
impl<T: Copy, Ty> ValueType for WasmPtr<T, Ty> {
fn into_le(self, buffer: &mut [u8]) {
buffer[..mem::size_of::<u32>()].copy_from_slice(&self.offset.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::<u32>()];
array.copy_from_slice(&buffer[..mem::size_of::<u32>()]);
Ok(Self {
offset: u32::from_le_bytes(array),
_phantom: PhantomData,
})
} else {
Err(ValueError::BufferTooSmall)
}
}
}
unsafe impl<T: Copy, Ty> ValueType for WasmPtr<T, Ty> {}
impl<T: Copy, Ty> Clone for WasmPtr<T, Ty> {
fn clone(&self) -> Self {