Exercise 5.40 · 习题

Exercise 5.40: Modify the compiler to maintain

the compile-time environment as described above. That is, add a

compile-time-environment argument to compile and the various code

generators, and extend it in compile-lambda-body.

练习 5.40：按照上述描述修改编译器，使其维护编译时环境 (compile-time environment)。具体而言，在 compile 和各代码生成器中增加 compile-time-environment 参数，并在 compile-lambda-body 中对其进行扩展。