/// <summary>
/// 解析表达式树
/// </summary>
public static ActionIdentity AnalysisExpression <T>(Expression <Func <T, object> > actionExpression)
{
if (actionExpression == null)
{
return(null);
}
//使用一元表达式的解析方法
//UnaryExpression operation = (UnaryExpression)actionExpression.Body;
//MethodCallExpression methodCall = (MethodCallExpression)operation.Operand;
//ConstantExpression methodConstant = (ConstantExpression)methodCall.Arguments[2];
MethodCallExpression methodCall = (MethodCallExpression)actionExpression.Body;
MethodInfo methodInfo = methodCall.Method;
string _controllerName = methodInfo.DeclaringType.Name;
_controllerName = _controllerName.Substring(0, _controllerName.Length - "controller".Length);
string _actionName = methodInfo.Name;
string _controllerTypeName = methodInfo.DeclaringType.FullName;
string _functionKey = _controllerTypeName + "." + _actionName;
ActionIdentity identity = new ActionIdentity()
{
ControllerName = _controllerName,
ActionName = _actionName,
FunctionKey = _functionKey,
ControllerTypeName = _controllerTypeName,
AreaName = string.Empty
};
const string areasNamespace = ".Areas.";
const string controllerNamespace = ".Controllers.";
if (_controllerTypeName.Contains(areasNamespace))
{
int areaPosition = _controllerTypeName.IndexOf(areasNamespace) + areasNamespace.Length;
identity.AreaName =
_controllerTypeName.Substring(areaPosition,
_controllerTypeName.IndexOf(controllerNamespace) - areaPosition);
}
return(identity);
}
/// <summary>
/// 解析表达式树
/// </summary>
private void AnalysisExpression()
{
_actionIdentity = ActionExpressionParser.AnalysisExpression(ActionExpression);
}
