代码生成器应该处理宏的声明，但是对于所有非宏的部分都应该不加任何修改地传递。
Our code generator should process the macro declarations, but pass through all non-macro portions unchanged. Therefore, the basic organization of the macro processor should look like this.
代码生成器应该处理宏的声明，但是对于所有非宏的部分都应该不加任何修改地传递。
Our code generator should process the macro declarations, but pass through all non-macro portions unchanged. Therefore, the basic organization of the macro processor should look like this.
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