fluencelabs/assemblyscript
1
0
Fork 0
mirror of https://github.com/fluencelabs/assemblyscript synced 2025-06-18 09:21:35 +00:00
Code Issues Projects Releases Wiki Activity

static array stuff

Browse Source
This commit is contained in:
dcode
2019-03-15 13:13:48 +01:00
parent 968b0321a0
commit 058dc8d4fa
77 changed files with 5634 additions and 4657 deletions
Download Patch File Download Diff File Expand all files Collapse all files

27
std/assembly/runtime.ts
View File

@ -138,6 +138,33 @@ export function DISCARD(ref: usize): void {
memory.free(changetype<usize>(ref - HEADER_SIZE));
}
/** Wraps a static buffer within an array by copying its contents. */
// @ts-ignore: decorator
@unsafe @inline
export function WRAPARRAY<T>(buffer: ArrayBuffer): T[] {
// TODO: this is quite a lot to compile inline
var array = REGISTER<T[]>(ALLOCATE(offsetof<T[]>()));
var bufferSize = <usize>buffer.byteLength;
var newBuffer = REGISTER<ArrayBuffer>(ALLOCATE(bufferSize));
changetype<ArrayBufferView>(array).data = newBuffer; // links
changetype<ArrayBufferView>(array).dataStart = changetype<usize>(newBuffer);
changetype<ArrayBufferView>(array).dataEnd = changetype<usize>(newBuffer) + bufferSize;
store<i32>(changetype<usize>(array), <i32>(bufferSize >>> alignof<T>()), offsetof<T[]>("length_"));
if (isManaged<T>()) {
ERROR("unexpected managed type"); // not used currently
let dataOffset: usize = 0;
while (dataOffset < bufferSize) {
let element: T = load<T>(changetype<usize>(buffer) + dataOffset);
store<T>(changetype<usize>(newBuffer) + dataOffset, element);
LINK(element, array);
dataOffset += sizeof<T>();
}
} else {
memory.copy(changetype<usize>(newBuffer), changetype<usize>(buffer), bufferSize);
}
return array;
}
// Helpers
/** Asserts that a managed object is still unregistered. */