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Removing stack from removeSubtypes method

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This commit is contained in:
Anders Hejlsberg 2015-05-13 16:49:51 -07:00
parent a8732d756a
commit ec18bd0816
1 changed files with 0 additions and 14 deletions
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14
src/compiler/checker.ts
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@ -3567,19 +3567,7 @@ module ts {
return false;
}
// Since removeSubtypes checks the subtype relation, and the subtype relation on a union
// may attempt to reduce a union, it is possible that removeSubtypes could be called
// recursively on the same set of types. The removeSubtypesStack is used to track which
// sets of types are currently undergoing subtype reduction.
let removeSubtypesStack: string[] = [];
function removeSubtypes(types: Type[]) {
let typeListId = getTypeListId(types);
if (removeSubtypesStack.lastIndexOf(typeListId) >= 0) {
return;
}
removeSubtypesStack.push(typeListId);
let i = types.length;
while (i > 0) {
i--;
@ -3587,8 +3575,6 @@ module ts {
types.splice(i, 1);
}
}
removeSubtypesStack.pop();
}
function containsAnyType(types: Type[]) {