import Assert from "@cafetextual/util/dist/src/assert/Assert";


export default class GrammarStyleManager
{
	
	private _items:Array<string> = [];
	private _itemsHash:{[name:string]:number} = {};	
	
	registerStyle(name:string):number {
		
		Assert.assert(name != null);
		this._items.push(name);
		
		var index:number = -1;
		index = this._itemsHash[name] = this._items.length - 1;
		
		return index;
		
	} // registerStyle

	itemByStyleID(styleID:number):string {
		return this._items[styleID];
	}
	
	nameToID(name:string):number {
		return this._itemsHash.hasOwnProperty(name) ? this._itemsHash[name]  : -1;
	}
	
	
	
} // class