mocks.js
function(select) {
			var chars = new antlr4.InputStream(input);
			var lexer = new SelectLexer(chars);
			var tokens  = new antlr4.CommonTokenStream(lexer);
			var parser = new SelectParser(tokens);
			parser.buildParseTrees = true;
			return parser.select();
		}
function(select) {
			var chars = new antlr4.InputStream(input);
			var lexer = new SelectLexer(chars);
			var tokens  = new antlr4.CommonTokenStream(lexer);
			var parser = new SelectParser(tokens);
			parser.buildParseTrees = true;
			return parser.select();
		}
Returns an antlr4 parse tree for a select query string