def p_unary_expression_3(self, p):
""" unary_expression : SIZEOF unary_expression
| SIZEOF LPAREN type_name RPAREN
"""
p[0] = c_ast.UnaryOp(
p[1],
p[2] if len(p) == 3 else p[3],
self._coord(p.lineno(1)))
def p_postfix_expression_5(self, p):
""" postfix_expression : postfix_expression PLUSPLUS
| postfix_expression MINUSMINUS
"""
# 添加前缀p以表示这是后缀的运算符，与上面前缀的进行区分
p[0] = c_ast.UnaryOp('p' + p[2], p[1], p[1].coord)
def p_unary_expression_2(self, p):
""" unary_expression : PLUSPLUS unary_expression
| MINUSMINUS unary_expression
| unary_operator cast_expression
"""
p[0] = c_ast.UnaryOp(p[1], p[2], p[2].coord)
def p_postfix_expression_5(self, p):
""" postfix_expression : postfix_expression PLUSPLUS
| postfix_expression MINUSMINUS
"""
p[0] = c_ast.UnaryOp('p' + p[2], p[1], p[1].coord)
