We use objects and builders to make AST items now, it's a lot less
clunky that doing string manipulation everywhere in the Python file.
It's also more flexible and will open up more options in the future for
things like enum AST items
Signed-off-by: Alek Ratzloff <alekratz@gmail.com>
This introduces:
* new syntax for list literals, put comma-separated values between
braces for your new list
* new syntax for indexing, do `foo[index]` to get the value in `foo` at
`index`. Lists also allow negative indices too. Any type that wants to
be indexed can include their own __index__ function as well.
* new VM instruction, BuildList. List literals were a lot easier to
implement using this rather than creating a new list, creating a
temporary stack value, and then duplicating + pushing to that
temporary value over and over.
Signed-off-by: Alek Ratzloff <alekratz@gmail.com>
Mostly going to be changing up how the AST is generated so I want to get
it into git now before I screw too much up.
Signed-off-by: Alek Ratzloff <alekratz@gmail.com>
