示例#1
0
        public override VariableType CodeGen(CodeGenPass pass)
        {
            AST ast = Expr;

            while (ast != null)
            {
                VariableType type = ast.CodeGen(pass);
                if (type != null)
                {
                    // 表达式的值依然在栈中,要pop出去
                    pass.Constructor.AddPop(type);
                }
                ast = ast.SiblingAST;
            }
            return(null);
        }