FSCallTree

This command line utility extracts function definitions and call structure for Onshape FeatureScript JS-like language. When started in the folder containing number of text files with the FS code it will create Call trees output in a new folder for every text file. Multiple functions, features, predicates declarations are handled, the code from function preconditions is currently ignored. For example given the file Array utils.txt with the content:

export function groupBy(arr is array, tolerance, f is function) returns array
{
    var result = {};
    for (var item in arr)
    {
        const newKey = f(item);
        var appended = false;
        for (var key in keys(result))
            if (abs(key - newKey) <= tolerance)
            {
                result[key] = append(result[key], item);
                appended = true;
                break;
            }

        if (!appended)
            result[newKey] = [item];
    }

    //sorting resulting array
    var resultArr = [];
    for (var key, value in result)
        resultArr = append(resultArr, [key, value]);

    return tolerantSort(resultArr, tolerance, function(entry)
        {
            return entry[0];
        })
        ->mapArray(function(entry)
        {
            return entry[1];
        });
}

the FSCallTree.exe will create a folder CallTrees with file Array_utils_call_tree.txt with content:

Line    Col     Scope    Name
1       8       0        |groupBy(arr is array, tolerance, f is function) returns array
6       24      1            |f
8       25      1            |keys
9       17      1            |abs
11      31      1            |append
23      21      1            |append
25      12      1            |tolerantSort
28      47      2                |function(entry)
29      11      1            |mapArray
29      20      2                |function(entry)