@cycle/dom/lib/es6/SymbolTree.js

var SymbolTree = /** @class */ (function () {
    function SymbolTree(mapper) {
        this.mapper = mapper;
        this.tree = [undefined, {}];
    }
    SymbolTree.prototype.set = function (path, element, max) {
        var curr = this.tree;
        var _max = max !== undefined ? max : path.length;
        for (var i = 0; i < _max; i++) {
            var n = this.mapper(path[i]);
            var child = curr[1][n];
            if (!child) {
                child = [undefined, {}];
                curr[1][n] = child;
            }
            curr = child;
        }
        curr[0] = element;
    };
    SymbolTree.prototype.getDefault = function (path, mkDefaultElement, max) {
        return this.get(path, mkDefaultElement, max);
    };
    /**
     * Returns the payload of the path
     * If a default element creator is given, it will insert it at the path
     */
    SymbolTree.prototype.get = function (path, mkDefaultElement, max) {
        var curr = this.tree;
        var _max = max !== undefined ? max : path.length;
        for (var i = 0; i < _max; i++) {
            var n = this.mapper(path[i]);
            var child = curr[1][n];
            if (!child) {
                if (mkDefaultElement) {
                    child = [undefined, {}];
                    curr[1][n] = child;
                }
                else {
                    return undefined;
                }
            }
            curr = child;
        }
        if (mkDefaultElement && !curr[0]) {
            curr[0] = mkDefaultElement();
        }
        return curr[0];
    };
    SymbolTree.prototype.delete = function (path) {
        var curr = this.tree;
        for (var i = 0; i < path.length - 1; i++) {
            var child = curr[1][this.mapper(path[i])];
            if (!child) {
                return;
            }
            curr = child;
        }
        delete curr[1][this.mapper(path[path.length - 1])];
    };
    return SymbolTree;
}());
export default SymbolTree;
//# sourceMappingURL=SymbolTree.js.map