Yeah, I'm getting bored of placing blocks -- it would be more fun to draw up plans and program block placement with for/while/if/switch/etc. statements. 

lmao ,,ScriptCraft''

100% mod already exists . . . So simple implementation right?

Prototype ScriptCraft functions:

public int placeBlock( Point p, BlockID id )

public Array<Pair<Point><BlockID>> parseScript(File foundation.sc)

Minecraft Education Edition [1] exists already (Microsoft release which does literally this --  but, with no-code: i.e., dragging and dropping pre-written/existing code). 

I just wanted to ask if anyone knew of such a mod already existing . . . If not, I'd welcome any leads on where the path to modding begins . . . 

(I'm imagining this combined into the game with a computer mod so can sit down in minecraft world at minecraft  computer and open unix shell to write ScriptCraft in. lmao And then one can ,,execute'' the file in-game similar to other minecraft consumables.)
 

[1] 

https://minecraft.fandom.com/wiki/Education_Edition

is this for the user or for developing 

It's for the user. 

what about .nbt files, it's an existing system from vanilla?