How to make a new scripting language in C++ ?...I need: parser,scanner,grammar,included functions,syntax.Where I can start?. I think I use JavaScript/PHP syntax.
Laik 0 Newbie Poster
Clockowl 56 Posting Whiz
I know you like ambitious projects:
I am going to make OS. And I need help with GUI...how to make an GUI ?...I am not on Windows so CreateWindowEx() doesn't exist.
But I suggest starting of with the easy stuff, hehe. :D
Laik 0 Newbie Poster
:-)...yes...:-)...I have ideas so I need to ask to you ;-)
Clockowl 56 Posting Whiz
This is a C++ forum, ask questions about C++. If you want to talk about software design in general (for instance, what merits your script will have compared to the other scripts already available), go to the Computer Science forum.. I guess.
Anyway, first define your script on paper. How will scripters create variables? How will scripters add them together?
Then write an interpreter that picks a file (or lines anyway) and parses them.
For instance, if you decided that people create integers with "int <name> = <val>;", you can decide to create a map<string, int> which will hold the users and then add one int when such a line is read.
ArkM 1,090 Postaholic
How to make a new scripting language in C++ ?...I need: parser,scanner,grammar,included functions,syntax.Where I can start?. I think I use JavaScript/PHP syntax.
Just before you start to design grammars (the language grammar is the same thing as the language syntax ;)), scanners, parsers, libraries etc - it's a good idea to design A NEW scripting (or what else) LANGUAGE per se. Design before implement...
It's especially valued proposal if "make a new scripting language in C++" means "implement new scripting language interpreter (or JIT compiler, or both) in C++"... or in C... or in Java... or in NEW SCRIPTING LANGUAGE...
Now it looks like I don't know what is it but I want to implement this The Great Nothing in C++!
Probably, the only reasonable reaction is:
Good luck! ( return 0; in C and C++)...
siddhant3s 1,429 Practically a Posting Shark
Well, I guess the kid is ready to slash the mountain.
You basically want to write your own language.
There is a Bible for Compiler writing which called Dragon Book.
http://en.wikipedia.org/wiki/21st_Century_Compilers
It is a vast book. If you are dedicated to write a language, you should pay a price, i.e. Read the book.
Ancient Dragon commented: Very good information and link :) +36
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