def p_property_assignment(self, t):
"""property_assignment : ID COLON expression SEMICOLON
| ID COLON expression UNIT SEMICOLON
| NUMBER COLON expression SEMICOLON
| NUMBER COLON expression UNIT SEMICOLON"""
name = t[1]
unit_value = None if len(t) == 5 else unit.get_unit(t[4])
t[0] = item.Property(name, t[3], unit_value, t.lineno(1))
def p_snowline_assignment(self, t):
"""snowline_assignment : expression COLON expression SEMICOLON
| expression COLON expression UNIT SEMICOLON"""
unit_value = None if len(t) == 5 else unit.get_unit(t[4])
t[0] = assignment.UnitAssignment(t[1], t[3], unit_value, t.lineno(1))
