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dcode
2019-03-15 09:26:31 +01:00
parent 139cec0846
commit 968b0321a0
20 changed files with 619 additions and 557 deletions
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17
std/assembly/arraybuffer.ts
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@ -1,5 +1,4 @@
import { runtime, ArrayBufferView } from "./runtime";
import { gc } from "./gc";
import { ALLOCATE, REGISTER, HEADER, HEADER_SIZE, MAX_BYTELENGTH } from "./runtime";
@sealed export class ArrayBuffer {
@ -22,24 +21,24 @@ import { gc } from "./gc";
}
constructor(length: i32) {
if (<u32>length > <u32>ArrayBufferView.MAX_BYTELENGTH) throw new RangeError("Invalid array buffer length");
var buffer = runtime.alloc(<usize>length);
if (<u32>length > <u32>MAX_BYTELENGTH) throw new RangeError("Invalid array buffer length");
var buffer = ALLOCATE(<usize>length);
memory.fill(changetype<usize>(buffer), 0, <usize>length);
return gc.register<ArrayBuffer>(buffer);
return REGISTER<ArrayBuffer>(buffer);
}
get byteLength(): i32 {
return changetype<runtime.Header>(changetype<usize>(this) - runtime.Header.SIZE).payloadSize;
return changetype<HEADER>(changetype<usize>(this) - HEADER_SIZE).payloadSize;
}
slice(begin: i32 = 0, end: i32 = ArrayBufferView.MAX_BYTELENGTH): ArrayBuffer {
slice(begin: i32 = 0, end: i32 = 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);
var outSize = <usize>max(end - begin, 0);
var out = runtime.alloc(outSize);
var out = ALLOCATE(outSize);
memory.copy(out, changetype<usize>(this) + <usize>begin, outSize);
return gc.register<ArrayBuffer>(out);
return REGISTER<ArrayBuffer>(out);
}
toString(): string {