Any left-over comments in the pending_comments vector are now inserted
as sub object children, as these are serialized last and will therefore
show up in their expected location.
Specifically:
* Properties must precede sub-object declarations.
* There shouldn't be any newlines in-between properties.
* There should be a newline in-between each sub-object.
* Object declarations must include the curly braces.
* There should be a newline between the properties of an object and
it's sub-objects.
This commit introduces a couple of connected changes that are hard to
untangle, unfortunately:
- Parse GML into the AST instead of JSON
- Change the load_from_json API on Widget to load_from_gml_ast
- Remove this same API from Core::Object as it isn't used outside of
LibGUI and was a workaround for the object registration detection;
by verifying the objects we're getting and casting we can remove this
constraint.
- Format GML by calling the formating APIs on the AST itself; remove
GMLFormatter.cpp as it's not needed anymore.
After this change, GML formatting already respects comments :^)
This Abstract Syntax Tree is specifically designed to represent GML and
also includes comments. It will be used in the next commit to replace
JSON in the GML system.
This was causing some macro redefinition errors after the headers ended
up in the same file through some includes. The simple fix is to undefine
the macro after use.
Prefixes are very much a C thing which we don't need in C++. This commit
moves all GML-related classes in LibGUI into the GUI::GML namespace, a
change somewhat overdue.
