A fixity level is a list of elements declaring the type of fixity for the operators in that
level.
During parsing, that fixity can be used to resolve conflicts by establishing the associativity
rules.
This interface declare the parts used by each of the declarations in a level.
A fixity level is a list of elements declaring the type of fixity for the operators in that level. During parsing, that fixity can be used to resolve conflicts by establishing the associativity rules. This interface declare the parts used by each of the declarations in a level.