def p_case_when_end(p):
    'case_when : WHEN condition mult_cmd else'
    p[0] = symbol_coder.c_case_when(p)
def p_case_when_end(p):
	'case_when : WHEN condition mult_cmd else'
	p[0] = symbol_coder.c_case_when(p)
def p_case_when_cont(p):
    'case_when : WHEN condition mult_cmd case_when'
    p[0] = symbol_coder.c_case_when(p)
def p_case_when_cont(p):
	'case_when : WHEN condition mult_cmd case_when'
	p[0] = symbol_coder.c_case_when(p)