There are definitely things like LISPs with AST editors, or Squeak and the blocks, but the closest to what you're on about would be http://colorforth.com/ http:

There are definitely things like LISPs with AST editors, or Squeak and the blocks, but the closest to what you're on about would be http://colorforth.com/ http://colorforth.com/ which is "niche" but has a strong heritage.