Packrat parser

A packrat parser is like a special machine that helps grown-up computer programs understand what your words mean. When you talk or write, you use something called grammar to make sure your ideas make sense. A packrat parser helps the computer program figure out the grammar you used so it can understand what you meant.

Imagine you are playing a game of word jumble where you have to put the letters in the right order to make a word. A packrat parser helps the computer program do the same thing. It rearranges different parts of your sentence until it makes sense, kind of like putting the letters of a jumbled word in the right order.

The packrat parser also remembers what it has already figured out, so it doesn't have to keep re-arranging the words every time it reads them. This way the computer program can understand your sentence faster and more accurately.

Overall, a packrat parser helps grown-up computer programs understand words and sentences the same way you and I do.