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Add an ExpandingFlags const enum (#17740)

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* Add an ExpandingFlags const enum

* Reformat
This commit is contained in:
Andy 2017-08-29 11:33:01 -07:00 committed by GitHub
parent 2350d46e44
commit 450c32ace0
1 changed files with 10 additions and 4 deletions
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14
src/compiler/checker.ts
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@ -8823,7 +8823,13 @@ namespace ts {
let targetStack: Type[];
let maybeCount = 0;
let depth = 0;
let expandingFlags = 0;
const enum ExpandingFlags {
None = 0,
Source = 1,
Target = 1 << 1,
Both = Source | Target,
}
let expandingFlags = ExpandingFlags.None;
let overflow = false;
let isIntersectionConstituent = false;
@ -9240,9 +9246,9 @@ namespace ts {
targetStack[depth] = target;
depth++;
const saveExpandingFlags = expandingFlags;
if (!(expandingFlags & 1) && isDeeplyNestedType(source, sourceStack, depth)) expandingFlags |= 1;
if (!(expandingFlags & 2) && isDeeplyNestedType(target, targetStack, depth)) expandingFlags |= 2;
const result = expandingFlags !== 3 ? structuredTypeRelatedTo(source, target, reportErrors) : Ternary.Maybe;
if (!(expandingFlags & ExpandingFlags.Source) && isDeeplyNestedType(source, sourceStack, depth)) expandingFlags |= ExpandingFlags.Source;
if (!(expandingFlags & ExpandingFlags.Target) && isDeeplyNestedType(target, targetStack, depth)) expandingFlags |= ExpandingFlags.Target;
const result = expandingFlags !== ExpandingFlags.Both ? structuredTypeRelatedTo(source, target, reportErrors) : Ternary.Maybe;
expandingFlags = saveExpandingFlags;
depth--;
if (result) {