The understanding of the compiler

(conclusion) The compiler is a binary program that can be implemented in any language (iteration), as long as the (1) existence of the compiler (executable binary) (2) Implementing the language implements the compiler logic

Example:

C language to achieve the compiler:

(1) compiling the C language compiler by sinks, compiling the binary code (binary program)

(2) Write C language compiler in C language, compile with compiler of (1), Generate binary code

compiler to implement Python language in Java language

(1) Compiling Java compiler by sinks, compiling binary code

(2) write Python compiler with Java, compile with (1) compiler, generate binary code