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Diffstat (limited to 'buildscripts/phing/classes/phing/UnknownElement.php')
| -rwxr-xr-x | buildscripts/phing/classes/phing/UnknownElement.php | 215 |
1 files changed, 215 insertions, 0 deletions
diff --git a/buildscripts/phing/classes/phing/UnknownElement.php b/buildscripts/phing/classes/phing/UnknownElement.php new file mode 100755 index 00000000..b04365e7 --- /dev/null +++ b/buildscripts/phing/classes/phing/UnknownElement.php @@ -0,0 +1,215 @@ +<?php +/* + * $Id: a4e6c2e3f776c5a353e52fb8518b3533f14a97c4 $ + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * This software consists of voluntary contributions made by many individuals + * and is licensed under the LGPL. For more information please see + * <http://phing.info>. + */ + +require_once 'phing/Task.php'; + +/** + * Wrapper class that holds all information necessary to create a task + * that did not exist when Phing started. + * + * <em> This has something to do with phing encountering an task XML element + * it is not aware of at start time. This is a situation where special steps + * need to be taken so that the element is then known.</em> + * + * @author Andreas Aderhold <andi@binarycloud.com> + * @author Hans Lellelid <hans@xmpl.org> + * @version $Id$ + * @package phing + */ +class UnknownElement extends Task { + + private $elementName; + private $realThing; + private $children = array(); + + /** + * Constructs a UnknownElement object + * + * @param string The XML element name that is unknown + * @access public + */ + function __construct($elementName) { + $this->elementName = (string) $elementName; + } + + /** + * Return the XML element name that this <code>UnnownElement</code> + * handles. + * + * @return string The XML element name that is unknown + */ + public function getTag() { + return (string) $this->elementName; + } + + /** + * Tries to configure the unknown element + * + * @throws BuildException if the element can not be configured + */ + public function maybeConfigure() { + + $this->realThing = $this->makeObject($this, $this->wrapper); + $this->wrapper->setProxy($this->realThing); + if ($this->realThing instanceof Task) { + $this->realThing->setRuntimeConfigurableWrapper($this->wrapper); + } + + $this->handleChildren($this->realThing, $this->wrapper); + $this->wrapper->maybeConfigure($this->getProject()); + + } + + /** + * Called when the real task has been configured for the first time. + * + * @throws BuildException if the task can not be created + */ + public function main() { + + if ($this->realThing === null) { + // plain impossible to get here, maybeConfigure should + // have thrown an exception. + throw new BuildException("Should not be executing UnknownElement::main() -- task/type: {$this->elementName}"); + } + + if ($this->realThing instanceof Task) { + $this->realThing->main(); + } + + } + + /** + * Add a child element to the unknown element + * + * @param object The object representing the child element + */ + public function addChild(UnknownElement $child) { + $this->children[] = $child; + } + + /** + * Handle child elemets of the unknown element, if any. + * + * @param ProjectComponent The parent object the unkown element belongs to + * @param object The parent wrapper object + */ + function handleChildren(ProjectComponent $parent, $parentWrapper) { + + if ($parent instanceof TaskAdapter) { + $parent = $parent->getProxy(); + } + + $parentClass = get_class($parent); + $ih = IntrospectionHelper::getHelper($parentClass); + + for ($i=0, $childrenCount=count($this->children); $i < $childrenCount; $i++) { + + $childWrapper = $parentWrapper->getChild($i); + $child = $this->children[$i]; + $realChild = null; + if ($parent instanceof TaskContainer) { + $realChild = $this->makeTask($child, $childWrapper, false); + $parent->addTask($realChild); + } else { + $project = $this->project === null ? $parent->project : $this->project; + $realChild = $ih->createElement($project, $parent, $child->getTag()); + } + + $childWrapper->setProxy($realChild); + if ($realChild instanceof Task) { + $realChild->setRuntimeConfigurableWrapper($childWrapper); + } + + if ($realChild instanceof ProjectComponent) { + $child->handleChildren($realChild, $childWrapper); + } + + if ($realChild instanceof Task) { + $realChild->maybeConfigure(); + } + } + } + + /** + * Creates a named task or data type. If the real object is a task, + * it is configured up to the init() stage. + * + * @param UnknownElement $ue The unknown element to create the real object for. + * Must not be <code>null</code>. + * @param RuntimeConfigurable $w Ignored in this implementation. + * @return object The Task or DataType represented by the given unknown element. + */ + protected function makeObject(UnknownElement $ue, RuntimeConfigurable $w) { + $o = $this->makeTask($ue, $w, true); + if ($o === null) { + $o = $this->project->createDataType($ue->getTag()); + } + if ($o === null) { + throw new BuildException("Could not create task/type: '".$ue->getTag()."'. Make sure that this class has been declared using taskdef / typedef."); + } + return $o; + } + + /** + * Create a named task and configure it up to the init() stage. + * + * @param UnknownElement $ue The unknwon element to create a task from + * @param RuntimeConfigurable $w The wrapper object + * @param boolean $onTopLevel Whether to treat this task as if it is top-level. + * @return Task The freshly created task + */ + protected function makeTask(UnknownElement $ue, RuntimeConfigurable $w, $onTopLevel = false) { + + $task = $this->project->createTask($ue->getTag()); + + if ($task === null) { + if (!$onTopLevel) { + throw new BuildException("Could not create task of type: '".$this->elementName."'. Make sure that this class has been declared using taskdef."); + } + return null; + } + + // used to set the location within the xmlfile so that exceptions can + // give detailed messages + + $task->setLocation($this->getLocation()); + $attrs = $w->getAttributes(); + if (isset($attrs['id'])) { + $this->project->addReference($attrs['id'], $task); + } + + // UnknownElement always has an associated target + $task->setOwningTarget($this->target); + + $task->init(); + return $task; + } + + /** + * Get the name of the task to use in logging messages. + * + * @return string The task's name + */ + function getTaskName() { + return $this->realThing === null ? parent::getTaskName() : $this->realThing->getTaskName(); + } +} |