Operating on host project data

[gmcfarlane]

Hello sir

thank you for the cool work. I have been looking for this, originally found the mdsn articles...

I have a project that deals with financial data. I have projects, cashflows, etc. I want to be able to let the user do some basic scripting and say 'this instance should be the sum of those things...' etc.

i originally pulled the code off msdn. After thinking about a lot of approaches... embedding delegates, i decided the most straight forward way was to make the parser not be a singleton. Instead, i make a parser instance, and pass data into that, then all the functions have access to the parser.

i considered passing data into the singleton, but figured it was a matter of time before two scripts walked on each other. the data would essentially be a global.

I ran into an issue w/ the msdn code and found this github.

I am going to do some testing and make sure i dont have the same basic problem here. Assuming that checks out, how would you suggest integrating host project data? I see there is one other issue that essentially asking for the same thing.

[gmcfarlane]

Hey there. Upon studying the new codebase, I realize that you have made a lot of progress. Very much appreciated. I have put my data in the parserScript object. This gets passed along w/ each script and is precisely what was needed to solve my issue. It also addresses the concern i had about 2 scripts fighting w/ each other over the global variables in your previous version!

awesome work sir.

greg

[vassilych]

Hi Greg,

The new version now has support for multiple interpreters, take a look. No more global shared variables.

Cheers, Vassili

[gmcfarlane]

how do you handle circular references?
i have cobbled something together... wondering if you have a more elegant solution that you use.

greg

-----Original Message----- From: "Vassili Kaplan" @.> Sent: Saturday, August 20, 2022 5:05pm To: "vassilych/cscs" @.> Cc: "gmcfarlane" @.>, "Author" @.> Subject: Re: [vassilych/cscs] Operating on host project data (Issue #30)

Hi Greg, The new version now has support for multiple interpreters, take a look. No more global shared variables. Cheers, Vassili — Reply to this email directly, view it on GitHub , or unsubscribe . You are receiving this because you authored the thread.Message ID: @.***>

[vassilych]

hi, what do you mean? Can you provide a CSCS code for that example?

Thanks Vassili

On Mon, Aug 22, 2022 at 1:49 PM gmcfarlane @.***> wrote:

how do you handle circular references? i have cobbled something together... wondering if you have a more elegant solution that you use.

greg

-----Original Message----- From: "Vassili Kaplan" @.> Sent: Saturday, August 20, 2022 5:05pm To: "vassilych/cscs" @.> Cc: "gmcfarlane" @.>, "Author" @.> Subject: Re: [vassilych/cscs] Operating on host project data (Issue #30)

Hi Greg, The new version now has support for multiple interpreters, take a look. No more global shared variables. Cheers, Vassili — Reply to this email directly, view it on GitHub , or unsubscribe . You are receiving this because you authored the thread.Message ID: @.***>

— Reply to this email directly, view it on GitHub https://github.com/vassilych/cscs/issues/30#issuecomment-1222245707, or unsubscribe https://github.com/notifications/unsubscribe-auth/AE74VFBUAKT7D2KMUHRQWTLV2NSONANCNFSM5TZNXVCQ . You are receiving this because you commented.Message ID: @.***>

[gmcfarlane]

/*i am wondering if we should not have every fresh call chain be a tree. what would I do w that

the goal here is not to delay my project which i hope makes me a lot of money, but it is to prevent circular references, lets do that and then stop... for now...

*/ using System; using System.Collections.Generic; using System.Text; using dataAccess;

namespace Peregrine { public class dependencyTree { private static dependencyTree _instance;

    dependencyTreeItem _root = null;

    private dependencyTree(dependencyTreeItem root_)
    {
        _root = root_;
        _tree = new Dictionary<string, dependencyTreeItem>();
        _tree.Add(root_.nameHash, root_);
    }

    public static void InitializeTree(dependencyTreeItem root_)
    {
        _instance = new dependencyTree(root_);
    }
    private static dependencyTree Instance
    {
        get
        {
            if (null == _instance) throw new Exception("tree has not been initialized");
            return _instance;
        }
    }
    public static dependencyTreeItem Root
    {
        get { return Instance._root; }
    }

    public Dictionary<string, dependencyTreeItem> _tree;
    public static Dictionary<string, dependencyTreeItem> Tree
    {
        get { return Instance._tree; }
    }
    public static void Resolve()
    {
        Instance._root.Resolve();

        foreach (dependencyTreeItem child in Instance._root.ChildItems)
        {

            //just cause you are my child does not mean you depend on me. 
            // quite contraire... you probably need to look at my properties...
            // so i can not depend on you.... execpt when i do...
            child.Resolve();
        }
    }

    public static void AddTreeNode(dependencyTreeItem anItem_, dependencyTreeItem dependsOnThisItem_)
    {
        if (false == Instance._tree.ContainsKey(dependsOnThisItem_.nameHash))
        {
            Instance._tree.Add(dependsOnThisItem_.nameHash, dependsOnThisItem_);
        }

        dependencyTreeItem ti = Instance._tree[dependsOnThisItem_.nameHash];
        if (dependencyTreeItem.RESOLVED_INPROGRESS == ti.resolved)
        {
            string offendingStack = string.Concat(anItem_.CurrentCallChain, dependencyTreeItem.CC_COUPLER, dependsOnThisItem_.nameHash);
            throw new Exception("You crazy goose. You have made a circular reference. " + offendingStack);
         }
    }

    public static Reset()
    {
        instance = null;

    }

    public static bool IsTreeInitialized()
    {
        return (null != _instance);
    }
}

}

[vassilych]

Not sure what does it have to do with CSCS? You provided C# code, not CSCS...

[gmcfarlane]

functions defined within cscs can call each other... functionA could call functionB which calls functionA....

Its, ok. I think we have answered the question that there is not a cyclical reference detection facility w/in CSCS.

If i get mine to something that would survive the real world, Ill let you know.

Thank you very much for sharing this project. I was going to try and address my requirements w/ a spreadsheet package! would have been a nightmare!

greg

-----Original Message----- From: "Vassili Kaplan" @.> Sent: Monday, August 22, 2022 11:53am To: "vassilych/cscs" @.> Cc: "gmcfarlane" @.>, "Author" @.> Subject: Re: [vassilych/cscs] Operating on host project data (Issue #30)

Not sure what does it have to do with CSCS? You provided C# code, not CSCS... — Reply to this email directly, view it on GitHub , or unsubscribe . You are receiving this because you authored the thread.Message ID: @.***>