Function recurseIntoValObject

src/plot_api/plot_schema.js:335–379

(valObject, parts, i)

}

function recurseIntoValObject(valObject, parts, i) {
    if(!valObject) return false;

    if(valObject._isLinkedToArray) {
        // skip array index, abort if we try to dive into an array without an index
        if(isIndex(parts[i])) i++;
        else if(i < parts.length) return false;
    }

    // now recurse as far as we can. Occasionally we have an attribute
    // setting an internal part below what's in the schema; just return
    // the innermost schema item we find.
    for(; i < parts.length; i++) {
        var newValObject = valObject[parts[i]];
        if(isPlainObject(newValObject)) valObject = newValObject;
        else break;

        if(i === parts.length - 1) break;

        if(valObject._isLinkedToArray) {
            i++;
            if(!isIndex(parts[i])) return false;
        } else if(valObject.valType === 'info_array') {
            i++;
            var index = parts[i];
            if(!isIndex(index)) return false;

            var items = valObject.items;
            if(Array.isArray(items)) {
                if(index >= items.length) return false;
                if(valObject.dimensions === 2) {
                    i++;
                    if(parts.length === i) return valObject;
                    var index2 = parts[i];
                    if(!isIndex(index2)) return false;
                    valObject = items[index][index2];
                } else valObject = items[index];
            } else {
                valObject = items;
            }
        }
    }

    return valObject;
}

// note: this is different from Lib.isIndex, this one doesn't accept numeric
// strings, only actual numbers.