Method write

crates/wasmtime/src/runtime/memory.rs:385–398

Safely writes contents of a buffer to this memory at the given offset. If the `offset + buffer.len()` exceeds the current memory capacity, then none of the buffer is written to memory and a [`MemoryAccessError`] is returned. # Errors This function will return an [`OutOfMemory`][crate::OutOfMemory] error when memory allocation fails. See the `OutOfMemory` type's documentation for details on Wasm

(
        &self,
        mut store: impl AsContextMut,
        offset: usize,
        buffer: &[u8],
    )

    ///
    /// Panics if this memory doesn't belong to `store`.
    pub fn write(
        &self,
        mut store: impl AsContextMut,
        offset: usize,
        buffer: &[u8],
    ) -> Result<(), MemoryAccessError> {
        let mut context = store.as_context_mut();
        self.data_mut(&mut context)
            .get_mut(offset..)
            .and_then(|s| s.get_mut(..buffer.len()))
            .ok_or(MemoryAccessError { _private: () })?
            .copy_from_slice(buffer);
        Ok(())
    }

    /// Returns this memory as a native Rust slice.
    ///