Package org.htmlunit.corejs.javascript
Interface SlotMap
- All Known Implementing Classes:
EmbeddedSlotMap
,HashSlotMap
,SlotMapContainer
,ThreadSafeSlotMapContainer
A SlotMap is an interface to the main data structure that contains all the "Slots" that back a
ScriptableObject. It is the primary property map in Rhino. It is Iterable but does not implement
java.util.Map because that comes with a bunch of overhead that we do not need.
This class generally has a bit of a strange interface, and its interactions with ScriptableObject are complex. Many attempts to make this interface more elegant have resulted in substantial performance regressions so we are doing the best that we can.
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Method Summary
Modifier and TypeMethodDescriptionvoid
Insert a new slot to the map.boolean
isEmpty()
Return whether the map is empty.Return the Slot that matches EITHER "key" or "index".Retrieve the slot at EITHER key or index, or return null if the slot cannot be found.void
Remove the slot at either "key" or "index".void
Replace "slot" with a new slot.int
size()
Return the size of the map.Methods inherited from interface java.lang.Iterable
forEach, iterator, spliterator
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Method Details
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size
int size()Return the size of the map. -
isEmpty
boolean isEmpty()Return whether the map is empty. -
modify
Return the Slot that matches EITHER "key" or "index". (It will use "key" if it is not null, and otherwise "index".) If no slot exists, then create a default slot class.- Parameters:
key
- The key for the slot, which should be a String or a Symbol.index
- if key is zero, then this will be used as the key instead.attributes
- the attributes to be set on the slot if a new slot is created. Existing slots will not be modified.- Returns:
- a Slot, which will be created anew if no such slot exists.
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query
Retrieve the slot at EITHER key or index, or return null if the slot cannot be found.- Parameters:
key
- The key for the slot, which should be a String or a Symbol.index
- if key is zero, then this will be used as the key instead.- Returns:
- either the Slot that matched the key and index, or null
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replace
Replace "slot" with a new slot. This is used to change slot types. -
add
Insert a new slot to the map. Both "name" and "indexOrHash" must be populated. Note that ScriptableObject generally adds slots via the "modify" method. -
remove
Remove the slot at either "key" or "index".- Parameters:
key
- The key for the slot, which should be a String or a Symbol.index
- if key is zero, then this will be used as the key instead.
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