/// <summary>
/// 获取当前表达式对应的动态执行方法。
/// </summary>
/// <param name="expression">当前条件表达式。</param>
/// <param name="instance">通过对象执行当前表达式。</param>
/// <returns>返回表达式代理方法。</returns>
public static object Execute(string expression, object instance)
{
var type = instance.GetType();
var key = expression + ":" + type.FullName;
var lambda = _invokers.GetOrAdd(key, k =>
{
var templateExpression = new TemplateExpression(expression);
return(templateExpression.Lambda(type));
});
var func = lambda.Compile();
return(func.DynamicInvoke(instance));
}
/// <summary>
/// 通过当前对象执行属性所得到的字符串。
/// </summary>
/// <param name="attribute">属性实例对象。</param>
/// <param name="result">当前原有的属性列表。</param>
/// <param name="instance">当前实例对象。</param>
public void Execute(TemplateHtmlCodeAttribute attribute, Dictionary <string, string> result, object instance)
{
var value = attribute.Value?.Trim();
if (!string.IsNullOrWhiteSpace(value))
{
var isTrue = (bool)TemplateExpression.Execute(value, instance);
if (isTrue)
{
result[attribute.AttributeName] = attribute[0].Trim('\'');
}
else if (attribute.Count == 2)
{
result[attribute.AttributeName] = attribute[1].Trim('\'');
}
}
}
