Merge pull request #7 from KoloInDaCrib/using-my-mighty-powers

[FEATURE] The `using` keyword

Author: EliteMasterEric

hscript/Expr.hx

@@ -122,6 +122,7 @@ enum Error {
 enum ModuleDecl {
 	DPackage( path : Array<String> );
 	DImport( path : Array<String>, ?everything : Bool, ?name : String );
+	DUsing( path: Array<String> );
 	DClass( c : ClassDecl );
 	DTypedef( c : TypeDecl );
 	DEnum( e : EnumDecl );

hscript/Parser.hx

@@ -1194,6 +1194,24 @@ class Parser {
 			}
 			ensure(TSemicolon);
 			return DImport(path, star, name);
+		case "using":
+			var path = [getIdent()];
+			while( true ) {
+				var t = token();
+				if( t != TDot ) {
+					push(t);
+					break;
+				}
+				t = token();
+				switch( t ) {
+				case TId(id):
+					path.push(id);
+				default:
+					unexpected(t);
+				}
+			}
+			ensure(TSemicolon);
+			return DUsing(path);
 		case "class":
 			var name = getIdent();
 			var params = parseParams();