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dcode
2019-03-13 22:35:47 +01:00
parent 6f70826e45
commit e38f627c8b
10 changed files with 326 additions and 276 deletions
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15
std/assembly/arraybuffer.ts
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@ -1,6 +1,6 @@
import { ALLOC_RAW, REGISTER, ArrayBufferBase } from "./runtime";
import { HEADER, ALLOC_RAW, ALLOC, REGISTER, ArrayBufferView } from "./runtime";
@sealed export class ArrayBuffer extends ArrayBufferBase {
@sealed export class ArrayBuffer {
@inline static isView<T>(value: T): bool {
if (value) {
@ -20,7 +20,16 @@ import { ALLOC_RAW, REGISTER, ArrayBufferBase } from "./runtime";
return false;
}
slice(begin: i32 = 0, end: i32 = ArrayBuffer.MAX_BYTELENGTH): ArrayBuffer {
constructor(length: i32) {
if (<u32>length > <u32>ArrayBufferView.MAX_BYTELENGTH) throw new RangeError("Invalid array buffer length");
return REGISTER<ArrayBuffer>(ALLOC(<usize>length));
}
get byteLength(): i32 {
return changetype<HEADER>(changetype<usize>(this) - HEADER_SIZE).payloadSize;
}
slice(begin: i32 = 0, end: i32 = ArrayBufferView.MAX_BYTELENGTH): ArrayBuffer {
var length = this.byteLength;
begin = begin < 0 ? max(length + begin, 0) : min(begin, length);
end = end < 0 ? max(length + end , 0) : min(end , length);