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Refactor slices for better compliance (#430)

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This commit is contained in:
Max Graey
2019-02-27 22:51:07 +02:00
committed by Daniel Wirtz
parent aad263e670
commit cdf40578b6
7 changed files with 51 additions and 55 deletions
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2
std/assembly/array.ts
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@ -344,7 +344,7 @@ export class Array<T> {
var len = this.length_;
begin = begin < 0 ? max(begin + len, 0) : min(begin, len);
end = end < 0 ? max(end + len, 0) : min(end, len);
len = end - begin;
len = max(end - begin, 0);
var sliced = new Array<T>(len);
if (len) {
memory.copy(

16
std/assembly/arraybuffer.ts
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@ -52,13 +52,15 @@ export class ArrayBuffer {
slice(begin: i32 = 0, end: i32 = MAX_BLENGTH): ArrayBuffer {
var len = this.byteLength;
if (begin < 0) begin = max(len + begin, 0);
else begin = min(begin, len);
if (end < 0) end = max(len + end, 0);
else end = min(end, len);
var newLen = max(end - begin, 0);
var buffer = allocateUnsafe(newLen);
memory.copy(changetype<usize>(buffer) + HEADER_SIZE, changetype<usize>(this) + HEADER_SIZE + begin, newLen);
begin = begin < 0 ? max(len + begin, 0) : min(begin, len);
end = end < 0 ? max(len + end, 0) : min(end, len);
len = max(end - begin, 0);
var buffer = allocateUnsafe(len);
memory.copy(
changetype<usize>(buffer) + HEADER_SIZE,
changetype<usize>(this) + HEADER_SIZE + begin,
len
);
return buffer;
}

8
std/assembly/string.ts
View File

@ -394,10 +394,10 @@ export class String {
}
slice(beginIndex: i32, endIndex: i32 = i32.MAX_VALUE): String {
var length = this.length;
var begin = (beginIndex < 0) ? max(beginIndex + length, 0) : min(beginIndex, length);
var end = (endIndex < 0) ? max(endIndex + length, 0) : min(endIndex, length);
var len = end - begin;
var len = this.length;
var begin = beginIndex < 0 ? max(beginIndex + len, 0) : min(beginIndex, len);
var end = endIndex < 0 ? max(endIndex + len, 0) : min(endIndex, len);
len = end - begin;
if (len <= 0) return changetype<String>("");
var out = allocateUnsafe(len);
copyUnsafe(out, 0, this, begin, len);