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61 Commits

Author SHA1 Message Date
David Wendt e7768d0802 Add methods to allow storing XML objects on the accompanying tree nodes, so that expando properties on child nodes will work. 2020-01-04 19:00:13 -05:00
David Wendt b06dd5d15e Add a special node to represent the document root in the node tree, and get rid of the explicit document reference type in `XMLObject`. 2020-01-04 19:00:12 -05:00
David Wendt 0fe0e4fe90 Separate `XMLName` into another module 2020-01-04 19:00:11 -05:00
David Wendt 3928c7cc51 Reject empty text nodes 2020-01-04 19:00:11 -05:00
David Wendt 7a9a16e598 Don't repeat yourself. 2020-01-04 19:00:11 -05:00
David Wendt bd1ea56cc3 Implement `XMLNode` properties that don't require child or attribute iteration. 2020-01-04 19:00:10 -05:00
David Wendt e2eb3d0bde Add a test of XMLDocument::from_str. 
This test technically works, but the results were slightly surprising. If it turns out Flash works differently from `quick_xml`, we'll change this test to match Flash.
 2020-01-04 19:00:10 -05:00
David Wendt 6ae5ae3038 Add Comment parsing support 2020-01-04 19:00:10 -05:00
David Wendt 554f0dc1e5 Add XMLNode class and constructor impl 2020-01-04 19:00:07 -05:00
David Wendt 6a65e984ae Add a new `XMLObject` variant to the AVM1 object ecosystem. 
This particular variant is actually a two-in-one deal: `XMLObject`s may either refer to a document or a node.
 2020-01-04 18:58:42 -05:00
David Wendt 89c9753520 Add rudimentary custom DOM impl on top of `quick_xml`. 
`quick_xml` was chosen due to it's high performance and support for zero-copy use cases. However, we are not using `minidom`, which is the already-extant DOM impl that uses `quick_xml` as it's parsing provider. This is because `minidom` nodes are not amenable to garbage collection.

Specifically: we want to be able to construct a new `Object` variant that holds part of an XML node. However, `minidom::Element` directly owns it's children, meaning that we can't hold references to it from within `Object` while also keeping those objects to the `'gc` lifetime. Hence, we provide a GC-exclusive DOM implementation.

I ruled out solutions such as holding an entire XML tree in an `Rc` and having AVM objects that shadow them. This works for `SwfSlice` because indexing an array is cheap; but traversing a tree can get very expensive. XML is used in many places in Flash Player, so it's important that we treat it like a first-class citizen.
 2020-01-04 18:48:17 -05:00