Love it but Missing doc

Question

Love it but Missing doc

michalss opened this issue 6 years ago · comments

Dear Dev,

I have to say i love this code, best ever im glad to use it in my projects, however what im missing is examples how exactly use all of commands. It would be enought just make sample for each command. And how to integrate own commands..
Thx

Vassili Kaplan · Answer 1 · Tue May 15 2018 01:17:26 GMT+0800 (China Standard Time)

Hi Michal,

Thanks for the nice words! There is no doc yet, but you can check out a few CSCS examples at https://github.com/vassilych/cscs/tree/master/cscs/bin/Debug/scripts

There is also a repository for mobile development in CSCS for iOS and Android (via Xamarin):
https://github.com/vassilych/mobile

Also, you can check out a free E-book describing CSCS:
https://www.syncfusion.com/ebooks/implementing-a-custom-language

And a few articles:
http://msdn.microsoft.com/magazine/mt632273
http://msdn.microsoft.com/magazine/mt829272
http://www.codemag.com/Article/1607081/How-to-Write-Your-Own-Programming-Language-in-C#
http://www.codemag.com/Article/1711081/Developing-Cross-Platform-Native-Apps-with-a-Functional-Scripting-Language

Thanks and looking forward to your feedback,
Vassili

michalss · Answer 2 · Wed May 23 2018 13:16:22 GMT+0800 (China Standard Time)

Hello,

Still not sure how to add custom command and his function. :(

In this article : http://www.codemag.com/Article/1607081/How-to-Write-Your-Own-Programming-Language-in-C# , i did try and it works ok, but it is a bit different then this on git.

What i did:

Add contant in Constants.cs

Then add my own function class in FunctionsOS.cs

And then register it in Interpreter. But keep saying cannot parse it :(.... Can you please write some doc how exactly to add it pls ? I was trying to implement ping as example..

Not sure what else need to be done, i was thinking this is all. Also it would be great to explaination if want to add custom function with more then 1 para..

Getting this : Couldn't parse [ping"127.0.0.1"] in StringOrNumber

Thx a lot

michalss · Answer 3 · Wed May 23 2018 15:22:39 GMT+0800 (China Standard Time)

Also found the bug, once i assing string its print it to console output why ?
example: $ip = "127.0.0.0"; will print ip to console, but it is not wanted to work like this..

michalss · Answer 4 · Wed May 23 2018 15:31:59 GMT+0800 (China Standard Time)

Another bug:
if else does not work..
Couldn't parse [else] in StringOrNumber

Vassili Kaplan · Answer 5 · Thu May 24 2018 01:51:29 GMT+0800 (China Standard Time)

Hi,

--> Getting this : Couldn't parse [ping"127.0.0.1"]
You should use parentheses, like in ping("127.0.0.1"). It's possible to have a function without parentheses, but more work is involved, see e.g. the implementation of the "return" statement.

--> example: $ip = "127.0.0.0"; will print ip to console, but it is not wanted to work like this..
Don't use dollar sign with variables, use just ip = "...";

--> if else does not work.. Couldn't parse [else] in StringOrNumber
There is no "if else" construct. Use "elif" instead (like in Python). Also, "if", "elif", and "else" all require curly brackets, like in if (a>0) {print("hi"); }

Also, take a look at the source code how a simple function is implemented, e.g. sin().

All the best,
Vassili

michalss · Answer 6 · Thu May 24 2018 13:49:56 GMT+0800 (China Standard Time)

hmm well,

I have to say it does not work at all.

elif does not work

Pls try it yrself. It is not work... BTW in your examples u have used if else commands, look at here:
https://github.com/vassilych/cscs/blob/master/cscs/bin/Debug/scripts/if_while_bool.cscs

Another thing is, output result is in revers order :(...

Vassili Kaplan · Answer 7 · Thu May 24 2018 19:09:20 GMT+0800 (China Standard Time)

You are using elif instead of else. "elif" is used instead of "else if" in a condition.
Also the functions like print must have arguments in parentheses.
Here is the working code:

ip = "127.0.0.1";
if (1==1) {
print("OK");
} else {
print("Not OK");
}
print(ip);

michalss · Answer 8 · Fri May 25 2018 21:07:22 GMT+0800 (China Standard Time)

Ok thx all working now. Another question how can i concat string pls ?

Example:

machine = import();
file_to_check = "\";
file_to_check += machine;
file_to_check += "\c$\Program Files\application.exe";

print(file_to_check);

michalss · Answer 9 · Sun May 27 2018 05:05:01 GMT+0800 (China Standard Time)

i cannot use "\" this always get me cannot parse it.. :( But is there a way to make it work ?

Vassili Kaplan · Answer 10 · Sun May 27 2018 21:31:08 GMT+0800 (China Standard Time)

You can concatenate strings just with a "+", e.g.:
a = "Hello " + "World";

file_to_check = "\"; is not a valid string (in any language). If you want to include a quote into the string, it must be:
file_to_check = "\"";
If you want to have a backslash, you must use another backslash, e.g.
file_to_check += "\\c$\\Program Files\\application.exe";

michalss · Answer 11 · Sun May 27 2018 21:54:08 GMT+0800 (China Standard Time)

No my point was to use "\\" i need to save into variable double backslash..

Vassili Kaplan · Answer 12 · Sun May 27 2018 23:28:52 GMT+0800 (China Standard Time)

ah, ok, then use file_to_check = "\\"; for a backslash and file_to_check = "\\\\"; for a double backslash.

michalss · Answer 13 · Mon May 28 2018 05:32:15 GMT+0800 (China Standard Time)

Wrong parse, it wont take it.. :(

Couldn't parse ["\\\\";] in StringOrNumber

Vassili Kaplan · Answer 14 · Tue May 29 2018 03:06:24 GMT+0800 (China Standard Time)

Cut and paste the whole code snippet that doesn't work for you and explain what final strings you expect - then it should be easy to fix.

michalss · Answer 15 · Tue May 29 2018 14:25:21 GMT+0800 (China Standard Time)

This , but not matter what it wont parse it in any case when i use even single \

\\machine\c$\Program Files\Company\Client\app.exe

and this i want to save it into variable

Vassili Kaplan · Answer 16 · Wed May 30 2018 06:21:32 GMT+0800 (China Standard Time)

x = "\\\\machine\\c$\\Program Files\\Company\\Client\\app.exe";

michalss · Answer 17 · Wed May 30 2018 21:05:52 GMT+0800 (China Standard Time)

No it does not work as excepted. Machine is variable string with ip or pc name in it..

x = "\\";
x += machine;
x += "\c$\Program Files\Company\Client\app.exe";

print(x);

return cannot parse

michalss · Answer 18 · Fri Jun 08 2018 13:28:24 GMT+0800 (China Standard Time)

Have you find the solution for this pls ?

Vassili Kaplan · Answer 19 · Fri Jun 08 2018 19:06:43 GMT+0800 (China Standard Time)

Just look at the examples I pasted in this thread. For the one that you need now the correct code is:

a="\\\\machine\\c$\\Program Files\\Company\\Client\\app.exe";
print("a=", a);

You just always need to protect a backslash with another backslash.

michalss · Answer 20 · Mon Jun 18 2018 17:01:58 GMT+0800 (China Standard Time)

No it does not work try it pls... :( it is a bit frustrating

machine = "127.0.0.1";

a = "\\\\machine\\c$\\Program Files\\Company\\Client\\app.exe";
print("a=", a);

It will print this:
a=\\machine\c$\Program Files\Company\Client\app.exe

but expected result should be 👍
a=\\127.0.0.1\c$\Program Files\Company\Client\app.exe

So it does not work at all...

Vassili Kaplan · Answer 21 · Tue Jun 19 2018 04:31:09 GMT+0800 (China Standard Time)

How would it know that the "machine" is not a constant but a variable? You should do this:

machine = "127.0.0.1";
a = "\\\\"+ machine + "\\c$...";

michalss · Answer 22 · Tue Jun 19 2018 05:32:42 GMT+0800 (China Standard Time)

Well i have try this of course, giving error during the parsing. Just pls try it on your own. it wont work. No matter ill try still could not parse it. But if i use this / it works and i can save it in variable..

michalss · Answer 23 · Wed Jun 20 2018 18:47:04 GMT+0800 (China Standard Time)

ok officially try everything, u cant simply conecat "\\" + machine... there is no way to do it..

Murat Sahin · Answer 24 · Sat Jul 14 2018 00:10:43 GMT+0800 (China Standard Time)

Hi Vassilych,
It's great job. Thanks for your all description. How can I implement to run multiple scripts in the same code. As I read your code, As I understand I can't create a new class for every script file because local variables are hold in static variables.

Thanks again,

Kind Regards,

Murat

Vassili Kaplan · Answer 25 · Mon Jul 16 2018 05:34:12 GMT+0800 (China Standard Time)

Hi Murat,

Thanks for kind words! But I don't think I quite get what you mean. Could you elaborate? Also, for instance, how can you run multiple scripts, say in Python?

Thanks,
Vassili

Murat Sahin · Answer 26 · Mon Jul 16 2018 16:53:39 GMT+0800 (China Standard Time)

Hi Vassili,
I mean that I want to run some scripts at the same application. But I don't want that the variables values couldn't be mixed ? As I see that, I can't create independent script interpreter classes in the same application. How can I do that? Local Variables and Global Functions are held in ParserFunctions class but they are global variables and doesn't hold in a class. I examine the code but I couldn't find an easy method to carry the local and global variables in a class.

Do you have any advice for this?

Thanks,

Murat

Murat Sahin · Answer 27 · Fri Jul 27 2018 20:33:23 GMT+0800 (China Standard Time)

Hi Vassili,
Any news on this pls ?

Vassili Kaplan · Answer 28 · Tue Jul 31 2018 01:06:36 GMT+0800 (China Standard Time)

Hi Murat,

Yes, it has been completed. If you define variables, like c=1; c will be global, as before. But if you want to define them locally, just in one file, do DefineLocal(varName, initValue); e.g.:

DefineLocal("myVar", 1);
or
DefineLocal("x"); // x will be an empty string by default.

Then as long as you use myVar or x, it will be in the local scope only...

By the way, you can also use a debugger with CSCS and also a REPL evaluator with CSCS with Visual Studio Code.
See CSCS Debugger and CSCS REPL for details.

Cheers,
Vassili

Murat Sahin · Answer 29 · Tue Aug 07 2018 03:09:28 GMT+0800 (China Standard Time)

Hi Vassili,
I try to understand. In the script user should define the variable with DefineLocal("x) command. So can I run the same script in different threads separately?

Many thanks for your help.

Kinds,

Murat

Vassili Kaplan · Answer 30 · Tue Aug 07 2018 10:26:40 GMT+0800 (China Standard Time)

Hi Murat,

No, running exactly the same script file in multiple files is not supported yet.
And yes, DefineLocal("x") will define a variable to be used just in a particular script file (so any changes to it in that file won't be visible outside).
Can you describe a scenario you had in mind, when you mentioned: "run the same script in different threads separately"?

Thanks,
Vassili

Murat Sahin · Answer 31 · Sat Aug 18 2018 18:39:54 GMT+0800 (China Standard Time)

Hi Vassili,
Thanks for your answer. I am sorry for my late feedback. Now I am on holiday :)

I mean that I would run several scripts in one application. So these scripts can run independently and each script holds their values independently.

I want to use Interpreter as a class. For each script, I would create a new Interpreter class and I can use them independently.

Is it clear?

Thanks,
Murat

Vassili Kaplan · Answer 32 · Sat Aug 18 2018 20:43:38 GMT+0800 (China Standard Time)

Hi Murat,

Yes, your point is clear and the ask is reasonable. Unfortunately, this is not supported yet, but it would be a good idea to implement (but it would take rather a long time, at least a few months)...
At the moment I am sure that there should be some workarounds for this...
I could offer you probably a workaround if you describe more details of a problem that you are trying to solve...

Best,
Vassili

Murat Sahin · Answer 33 · Sun Aug 26 2018 19:31:12 GMT+0800 (China Standard Time)

Hi Vassili,
Thanks for your positive answer. I can wait for a couple of months :) In the beginning, I can continue work without this feature.

Many Thanks,

Murat

gitfreshfish · Answer 34 · Sat Oct 20 2018 16:41:30 GMT+0800 (China Standard Time)

Dear Vassili,The following example : b=-2;print(-b);Couldn't parse [-b] in StringOrNumber. It seems scsc doesn't Identify variable b, though it can use print(-1*b) instead。how to fix and make the problem simpler?
Thanks

Vassili Kaplan · Answer 35 · Tue Oct 23 2018 05:34:35 GMT+0800 (China Standard Time)

Hi there,
Thanks a lot for this bug report! It has been fixed and checked in. Please check it out!
Best,
Vassili

gitfreshfish · Answer 36 · Sun Nov 04 2018 11:33:55 GMT+0800 (China Standard Time)

Dear Vassili, I define a function like this : UserFunction("Info",{100,0},{200,0},23.3). The problem is CSCS doesn't parse the arguments correctly, "List args = script.GetFunctionArgs();" returns 6 arguments (only 4 actually ). I mean CSCS goes some problem when parsing direct array arguments. of course,U can define "a={100,0};b={200,0}; UseFunction("Info",a,b,23.3)" instead, and it can work correctly. Could this little bug be fixed ? Many Thanks,

Vassili Kaplan · Answer 37 · Wed Nov 14 2018 07:24:57 GMT+0800 (China Standard Time)

Hi there, fixed with the latest check in!
Cheers,
Vassili