/
Helpers.scala
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/
Helpers.scala
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/*
* Copyright 2006-2011 WorldWide Conferencing, LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package net.liftweb
package util
import scala.xml._
/**
* The Helpers object provides a lot of utility functions:<ul>
* <li>Time and date
* <li>URL
* <li>Hash generation
* <li>Class instantiation
* <li>Control abstractions
* <li>Basic types conversions
* <li>XML bindings
* </ul>
*/
object Helpers extends TimeHelpers with StringHelpers with ListHelpers
with SecurityHelpers with BindHelpers with HttpHelpers
with IoHelpers with BasicTypesHelpers
with ClassHelpers with ControlHelpers
{
}
/**
* Used for type-safe pattern matching of an Any and returns a Seq[Node]
*/
object SafeNodeSeq {
// I didn't use unapplySeq as I ran into a compiler(2.7.1 final) crash at LiftRules#convertResponse.
// I opened the scala ticket https://lampsvn.epfl.ch/trac/scala/ticket/1059#comment:1
def unapply(any: Any) : Option[Seq[Node]] = any match {
case s: Seq[_] => Some(s flatMap ( _ match {
case n: Node => n
case _ => NodeSeq.Empty
}))
case _ => None
}
}
/**
* The superclass for all Lift flow of control exceptions
*/
class LiftFlowOfControlException(msg: String) extends RuntimeException(msg)