SSViewer_Scope
class SSViewer_Scope
This tracks the current scope for an SSViewer instance. It has three goals: - Handle entering & leaving sub-scopes in loops and withs - Track Up and Top - (As a side effect) Inject data that needs to be available globally (used to live in ViewableData)
In order to handle up, rather than tracking it using a tree, which would involve constructing new objects for each step, we use indexes into the itemStack (which already has to exist).
Each item has three indexes associated with it
- Pop. Which item should become the scope once the current scope is popped out of
- Up. Which item is up from this item
- Current. Which item is the first time this object has appeared in the stack
We also keep the index of the current starting point for lookups. A lookup is a sequence of obj calls - when in a loop or with tag the end result becomes the new scope, but for injections, we throw away the lookup and revert back to the original scope once we've got the value we're after
Constants
| ITEM |
|
| ITEM_ITERATOR |
|
| ITEM_ITERATOR_TOTAL |
|
| POP_INDEX |
|
| UP_INDEX |
|
| CURRENT_INDEX |
|
| ITEM_OVERLAY |
|
Methods
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Called at the start of every lookup chain by SSTemplateParser to indicate a new lookup from local scope
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Gets the current object and resets the scope.
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Details
at line 59
__construct($item, $inheritedScope = null)
at line 72
getItem()
at line 77
locally()
Called at the start of every lookup chain by SSTemplateParser to indicate a new lookup from local scope
at line 88
resetLocalScope()
at line 97
getObj($name, $arguments = null, $forceReturnedObject = true, $cache = false, $cacheName = null)
at line 102
obj($name, $arguments = null, $forceReturnedObject = true, $cache = false, $cacheName = null)
at line 136
object
self()
Gets the current object and resets the scope.