According to the processing procedure of query pre-compiler, this paper givens the general design and implementation of syntax analysis, semantics analysis in MDBI query pre-compiler.
The binding compiler USES these comparisons both to make sure that pre-existing binding methods it finds in classes are still needed, and to avoid creating duplicate classes or methods.
利用这些比较，绑定编译器可以确定在类中发现的已经存在的方法是否仍然需要，并避免创建重复的类或方法。
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We've always had an ahead-of-time compiler, to produce pre-compiled Ruby code in.class files. But there were a few things missing.