Game
Robot Unlock
13 years ago

The long journey from character to AST... begins elsewhere


Since we’re in full compiler-compiler season I thought it would be appropriate for me to also provide a more educational example. This example illustrates how a very rudimentary* compiler works. In more detail, it shows what happens to your code after it’s been chopped into nice tokens. Then, it shows how, based on these tokens and the language’s grammar an AST is built and then decorated and, finally, how this tree is fed to an interpreter and results start popping up.

By rudimentary I mean that the language consists of simple arithmetic expressions. Below, you can find the compiler-demo. Just type stuff and be amazed!

If you want to find out more about the inner workings of this nifty thing, check this very nicely written article on CodeProject.

<div> Your input code:
7 + pi * (x - 10)
The environment:
{ “x” : 5, “pi” : 3 }
Output:
</div>



0 comments

Loading...

Next up

Successful landing

#screenshotsaturday

Protege el conocimiento, salva la historia. Guardian of Lore es un platformer 2D en el que debes luchar para mantener viva la memoria de la mitología latinoamericana. El juego llegará a Steam el 18 de mayo: https://steam.pm/app/1211740 #ScreenshotSaturday

Heya! I wanted to show some gameplay progress i made so far. I hope you like it ^^

Family band complete!

Call it 'wrong turn'!🚫 The feeling of running into a house with only one exit🚪, and being doomed to die. #pixelart #pixelartist #pixelartwork #art #pixel #indiegame #IndieGameDev #indieartist

Alone Together....

Cash Banooca

A few screenshots of the places you'll cross in the Demo of Blu. You can play it today on #gamejolt !

I made a small jungle house.