feat(WIKI): wiki 2025 BREAKING CHANGE: Older content is categorized into older folders

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# 9.练习:生成代码
*到目前为止,我们的冒险游戏有 10 个对象。每个对象由有 5 个属性组成。一个真正的文本冒险可能有数百个甚至数千个对象,并且每个对象的属性数量也可能增加(请参阅下一章)。在目前的形式下,维护如此庞大的对象和属性列表将很困难。*
例如,当我们在添加对象 *wallField**wallCave* 时,我们必须在三个不同的位置执行此操作:一次在 *object.h* 中(作为<em>#define</em>),两次在 *object.c* 中(数组 *objs* 中的一个元素,以及一个单独的标签数组)。这显然十分笨拙并且容易出错。
我们将不再手工维护 object. h 和 object. c而是从更适合我们需要的单一源开始生成文件。这个新的源文件可以用你喜欢的任何语言 ( 典型的是某些特定领域的语言 ),只要你有工具把它转换回 C。下面是一个简单的例子考虑下列布局来组织我们的对象
```txt
/* Raw C code (declarations) */
- ObjectName
AttributeName AttributeValue
AttributeName AttributeValue
...
- ObjectName
AttributeName AttributeValue
AttributeName AttributeValue
...
- ...
```
根据到目前为止收集的对象,我们可以构造以下源文件。文件名并不重要;我只是简单地将其命名为*object.txt*,以明确它与*object.h*和*object.c*相关。
## object.txt
```txt
#include <stdio.h>
#include "object.h"
typedef struct object {
const char *description;
const char **tags;
struct object *location;
struct object *destination;
} OBJECT;
extern OBJECT objs[];
//对象
- field
description "an open field"
tags "field"
- cave
description "a little cave"
tags "cave"
- silver
description "a silver coin"
tags "silver", "coin", "silver coin"
location field
- gold
description "a gold coin"
tags "gold", "coin", "gold coin"
location cave
- guard
description "a burly guard"
tags "guard", "burly guard"
location field
- player
description "yourself"
tags "yourself"
location field
- intoCave
description "a cave entrance to the east"
tags "east", "entrance"
location field
destination cave
- exitCave
description "an exit to the west"
tags "west", "exit"
location cave
destination field
- wallField
description "dense forest all around"
tags "west", "north", "south", "forest"
location field
- wallCave
description "solid rock all around"
tags "east", "north", "south", "rock"
location cave
```
::: warning 🤔 思考题:你能否自己用 C 来实现这段伪代码?
:::