docs: def p_randomvar_expr(self, p):
          '''randomvar_expr : BERNOULLI LPAREN expr RPAREN
                            | DIRAC_DELTA LPAREN expr RPAREN
                            | KRON_DELTA LPAREN expr RPAREN
                            | UNIFORM LPAREN expr COMMA expr RPAREN
                            | NORMAL LPAREN expr COMMA expr RPAREN
                            | EXPONENTIAL LPAREN expr RPAREN
                            | DISCRETE LPAREN IDENT COMMA lconst_case_list RPAREN
                            | DIRICHLET LPAREN IDENT COMMA expr RPAREN
                            | POISSON LPAREN expr RPAREN
                            | WEIBULL LPAREN expr COMMA expr RPAREN
                            | GAMMA   LPAREN expr COMMA expr RPAREN'''
          if len(p) == 7:
              if isinstance(p[5], list):
                  p[0] = ('randomvar', (p[1], (('enum_type', p[3]), *p[5])))
              else:
                  p[0] = ('randomvar', (p[1], (p[3], p[5])))
          elif len(p) == 5:
              p[0] = ('randomvar', (p[1], (p[3],)))