checkIsValidFieldName.hx

static var keyWords = ['for', 'while', 'if', 'else', 'do', 'class', 'case', 'cast', 'catch', 'continue', 'enum', 'super', 'switch', 'true',
	'package', 'in', 'import', 'static', 'function', 'null', 'extends', 'extern', 'false', 'implements', 'inline', 'this', 'throw', 'trace',
	'break', 'callback', 'default', 'dynamic', 'interface', 'never', 'new', 'override', 'private', 'public', 'return', 'static',
	'try', 'typedef', 'untyped', 'using', 'var'];
static var vSymb = '_abcdefghijklmnopqrstuvwxyz';
static function checkIsValidFieldName(v:String):Bool {
	if ( v == '' || Std.parseInt(v.substr(0, 1)) != null) return false;
	v = v.toLowerCase();
	if ( Lambda.indexOf(keyWords, v) != -1 ) return false;
	for (i in 0...v.length) if (vSymb.indexOf(v.substr(i, 1)) == -1 && Std.parseInt(v.substr(i, 1)) == null) return false;
	return true;
}