whalecalf - Grammar language

whalecalf is a grammar language created in 2000 by Alexander Okhotin.

#3368on PLDB

24Years Old

whalecalf website
Read more about whalecalf on the web: 1.

Example from the web:

algorithm=trellis;
terminal a, b, c;
S -> C & D;
C -> a C a | a C b | b C a | b C b | c;
D -> a A & a D | b B & b D | c E;
A -> a A a | a A b | b A a | b A b | c E a;
B -> a B a | a B b | b B a | b B b | c E b;
E -> a E | b E | e;