Any Item Literal

[sovdeeth]

Description

Adds a literal for itemtypes representing any item, all items, and any item in a tag.
The literal uses simplify() on ExprTag to allow tag expressions with literal strings to be interpreted as literals. This allows the use in events, like:

on right click with any item tagged as tag "pig_food":
    broadcast "test"

This literal also allows things like if player's tool is any item named "test" with lore "hello world", which makes item comparisons easier.

In the process of implementing this, I discovered that the parser doesn't attempt to parse Literals that are registered as expressions when only the PARSE_LITERALS flag is active. I've included a basic fix in this draft but will be improving it (so as to not duplicate code)

I also have concerns about evaluating the tag contents at parse time, since the tag contents may change after that. This may require storing the key to the tag instead and evaluating it when the itemtype itself is evaluated. This isn't ideal but may be necessary.

TODO:

• Fix the any item return value so it doesn't show as simply air?
  • Allow give any item to me to work properly.
• Fix the any item itemtype so it compares against any amount of item if not specified.
• Clean up parser literals fix

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Target Minecraft Versions: any
Requirements: none
Related Issues: none

[sovdeeth]

Further testing and experiments have unveiled issues with this implementation. I think to get the proper behavior, I'll have to completely rework the ItemData class to allow more generic types, rather than being locked to a specific ItemStack.