parser.py 文件源码

def p_multiplicitiveExpr_impl(self, p):
        '''multiplicitiveExpr : multiplicitiveExpr '*' unaryExpr
                              | multiplicitiveExpr '/' unaryExpr
        '''
        lhs = p[1]
        rhs = p[3]
        if p[2] == '/':
            rhs = AST(sympy.Pow(rhs.sympy,sympy.Integer(-1)), rhs.astUnit ** -1)
        ret = AST(sympy.Mul(lhs.sympy,rhs.sympy), lhs.astUnit*rhs.astUnit)
        p[0] = ret