Visualized mysql grammar tree

[wenzong]

Not work yet

Dot language

dot filename.dot -Tpng -o filename.png

S-expr

(a 
    b
    (c  d  e))

lisp2dot

• Turn S-expr into dot file.
• The gen code should like(not the same, the real gen code have label and other things)

digraph G{
    a->b;
    a->c;
    c->d;
    c->e;
}