Question

我有一个用于定义端口的宏：

-- Create simple port
define <p_def'struct_member> "p_def <name'name> <type'type>" as {
    <name'name> : inout simple_port of <type'type> is instance;
    keep bind(<name'name>,empty);
};

我想扩展宏以支持端口列表。我想使用一个可选的标签[<len'name>]来定义列表大小，如下所示：

-- Create simple port OR list of simple ports
define <p_def'struct_member> "p_def <name'name> [\[<len'name>\] ] <type'type>" as {

   if len does not exist { // How to implement it?
        <name'name> : inout simple_port of <type'type> is instance;
        keep bind(<name'name>,empty);

   } else { // len exists

        <name'name>[<len'name>] : list of inout simple_port of <type'type> is instance;
        keep for each in <name'name> {
            bind(it,empty);
        };
   };
};

**例如，定义大小为10的端口列表将是这样的：

p_def my_list_of_ports[10] bit;

我在Specman e Language Reference中找不到如何定义optional tag（[<len'name>]）是否已定义。您是否知道如何实现“if len not exists”语句在宏？谢谢你的帮助

Answer 1

如果有人感兴趣，答案是什么：

define <p_def'struct_member> "p_def <name'name>[\[<len'name>\]] <type'type>" as computed {
   if <len'name> == NULL {
      result = appendf("%s : inout simple_port of %s is instance; \n keep bind(%s,empty);", <name'name>, <type'type>, <name'name>);
   } else { // list
      result = appendf("%s[%s] : list of inout simple_port of %s is instance; keep for each in %s { bind(it,empty); };", <name'name>, <len'name>, <type'type>, <name'name>);
   };
};

Specman宏：如何使用可选标签？

1 个答案: