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Small last-in-first-out collection for templates and scripts, created via Formatter's newStack helper and exported to GraalJS. Items are pushed and popped only at the head, so the head is always the most recently added item, which makes it useful for simple bookkeeping such as tracking the current section while rendering nested content.
Properties
| Property | Returns | Description |
|---|---|---|
| head | Object | The current head, ie the most recently pushed object still on the stack. |
| list | List | The full contents of the stack, ordered from the bottom to the head. |
Methods
push(Object o)
Returns: String
Pushes the given object onto the stack so it becomes the new head. A null value is still pushed, but a warning is logged.
| Parameter | Description |
|---|---|
o | the object to push, may be null |
pop()
Returns: String
Removes the current head, if the stack is not empty. Does nothing if the stack is already empty.
getHead()
Returns: Object
The current head, ie the most recently pushed object still on the stack.
size()
Returns: int
The number of objects currently on the stack.
getList()
Returns: List
The full contents of the stack, ordered from the bottom to the head.
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