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Add API to get the type of object in a slot.

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This commit is contained in:
Bob Nystrom
2016-02-19 07:18:00 -08:00
parent fa0a507b48
commit ef3aa07d84
6 changed files with 79 additions and 2 deletions
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src/vm/wren_vm.c
+14
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@@ -1512,6 +1512,20 @@ static void validateApiSlot(WrenVM* vm, int slot)
ASSERT(slot < wrenGetSlotCount(vm), "Not that many slots.");
}
// Gets the type of the object in [slot].
WrenType wrenGetSlotType(WrenVM* vm, int slot)
{
validateApiSlot(vm, slot);
if (IS_BOOL(vm->apiStack[slot])) return WREN_TYPE_BOOL;
if (IS_NUM(vm->apiStack[slot])) return WREN_TYPE_NUM;
if (IS_FOREIGN(vm->apiStack[slot])) return WREN_TYPE_FOREIGN;
if (IS_LIST(vm->apiStack[slot])) return WREN_TYPE_LIST;
if (IS_NULL(vm->apiStack[slot])) return WREN_TYPE_NULL;
if (IS_STRING(vm->apiStack[slot])) return WREN_TYPE_STRING;
return WREN_TYPE_UNKNOWN;
}
bool wrenGetSlotBool(WrenVM* vm, int slot)
{
validateApiSlot(vm, slot);