viewer.git - Megapahit's fork of the Second Life viewer.

Age	Commit message (Collapse)	Author
2024-09-03	Generalize Lua-side result-set machinery for other use cases.	Nat Goodspeed
	Change `result_view()` from a simple function to a callable table so we can add conventional/default functions to it: `result_view.fetch()` is a generic `fetch()` function suitable for use with `result_view()`, and `result_view.close()` is a variadic function that closes result sets for whichever keys are passed. This arises from the fact that any `LL::ResultSet` subclass is accessed generically through its base class, therefore we don't need distinct "getSlice" and "closeResult" operations for different `LLEventAPI` listeners. (It might make sense to relocate those operations to a new generic listener, but for now "LLInventory" works.) That lets `result_view()`'s caller omit the `fetch` parameter unless it requires special behavior. Omitting it uses the generic `result_view.fetch()` function. Moreover, every view returned by `result_view()` now contains a close() function that closes that view's result set. The table returned by LLInventory.lua's `result()` function has a `close()` method; that method can now call `result_view.close()` with the two keys of interest. That table's `__index()` metamethod can now leverage `result_view()`'s default `fetch` function.
2024-09-03	result_view() now reuses same metatable instance for every table.	Nat Goodspeed

2024-09-03	Add test_result_view.lua; fix minor bugs in result_view.lua.	Nat Goodspeed

2024-09-02	Introduce result_view.lua, and use it in LLInventory.lua.	Nat Goodspeed
	result_view(key_length, fetch) returns a virtual view of a potentially-large C++ result set. Given the result-set key, its total length and a function fetch(key, start) => (slice, adjusted start), the read-only table returned by result_view() manages indexed access and table iteration over the entire result set, fetching a slice at a time as required. Change LLInventory to use result_view() instead of only ever fetching the first slice of a result set. TODO: This depends on the viewer's "LLInventory" listener returning the total result set length as well as the result set key. It does not yet return the length.