创建语言解释器 [英] Creating a language interpreter

问题描述

我想了解语言解释器的工作原理.你们能告诉我口译员如何工作的一般路线吗?

I am trying to understand how a language interpreter works. Can you guys point me the general lines on how an interpreter works?

我的意思是，假设我有一些像这样写的行

I mean, suppose I have some lines written like this

10  x = 200;
20  for r = x to 1000 step 1
25  z = r + 32;
30  print z;
40  next r;
50  end;

构建可以运行类似程序的解释器的最佳方法是什么?

what's the best way to build an interpreter that could run something like that?

有一个包含所有允许的函数并搜索匹配项的大矩阵?第一行，例如:它给变量 x 赋值 200，但这些是不存在的符号.

Having a large matrix containing all functions allowed and searching for a match? The first line, for example: it is assigning 200 to a variable x, but these are symbols that does not exist.

如果你们能给我指路...

If you guys can give me the direction...

感谢您的帮助.

推荐答案

编译器创建是一个复杂的话题(解释器可以看作是一种特殊的编译器).

Compiler creation is a complex topic (an interpreter can be seen as a special compiler).

你必须首先解析它 - 尝试理解语法，然后创建一些内部表示(抽象语法树)，然后创建一些执行逻辑.

You have to first parse it - try to understand the syntax and then create some internal representation (abstract syntax tree) and then create some execution logic.

维基百科 建议 http://mcs.une.edu.au/~comp319/

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