解释器/编译器如何工作 [英] How does an interpreter/compiler work

问题描述

解释器/编译器如何工作？

编译器

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编译器是要编写的第一个
转换程序。
的想法很简单：你编写程序，
然后交给编译器，
翻译它。然后运行
结果。

解释器

也是一个程序，
将高级语言翻译成
a低级语言，但它在
时刻运行程序。你使用文本编辑器编写
程序，或者使用
类似的程序，然后指示
解释器来运行程序。它
采用程序，一次一行，
并翻译每行前
运行它：它翻译第一个
行并运行它，然后翻译
第二行并运行它等。

编译程序特性：

• 花费大量时间分析和
  处理程序


• 生成的可执行文件是某种形式的
  机器特定的二进制代码


• 计算机硬件解释
  （执行）结果代码


• 程序执行速度快

解释器特性：

• 花费相对较少的时间
  分析和处理程序


• 生成的代码是某种类型的
  中间代码


• 生成的代码由
  另一个程序解释


• 程序执行相对较慢

How does an interpreter/compiler work? What is the difference between interpreter and compiler.

解决方案

Compilers

Compilers were the first sort of translator program to be written. The idea is simple: You write the program, then hand it to the compiler which translates it. Then you run the result.

Interpreters

An interpreter is also a program that translates a high-level language into a low-level one, but it does it at the moment the program is run. You write the program using a text editor or something similar, and then instruct the interpreter to run the program. It takes the program, one line at a time, and translates each line before running it: It translates the first line and runs it, then translates the second line and runs it etc.

Compiler characteristics:

• spends a lot of time analyzing and processing the program
• the resulting executable is some form of machine- specific binary code
• the computer hardware interprets (executes) the resulting code
• program execution is fast

Interpreter characteristics:

• relatively little time is spent analyzing and processing the program
• the resulting code is some sort of intermediate code
• the resulting code is interpreted by another program
• program execution is relatively slow

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