Chapter 18. The Interpreter Pattern

Some programs benefit from having a language to describe operations that theycan perform. The Interpreter pattern generally deals with defining a grammar for that language and using that grammar to interpret statements in that language.


When a program presents a number of different but somewhat similar cases that it can deal with, it can be advantageous to use a simple language to describe these cases and then have the program interpret that language. Such cases can be as simple as the Macro language recording facilities that various office suite programs provide or as complex as Visual Basic for Applications (VBA). VBA not only is included in Microsoft Office products but also can be easily embedded ...

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