/*
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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 org.apache.flex.compiler.internal.tree.mxml;
import org.apache.flex.compiler.definitions.IClassDefinition;
import org.apache.flex.compiler.definitions.IDefinition;
import org.apache.flex.compiler.internal.definitions.ClassDefinition;
import org.apache.flex.compiler.internal.projects.FlexProject;
import org.apache.flex.compiler.internal.scopes.MXMLFileScope;
import org.apache.flex.compiler.internal.scopes.TypeScope;
import org.apache.flex.compiler.internal.tree.as.NodeBase;
import org.apache.flex.compiler.mxml.IMXMLTagAttributeData;
import org.apache.flex.compiler.mxml.IMXMLTagData;
import org.apache.flex.compiler.problems.ICompilerProblem;
import org.apache.flex.compiler.problems.MXMLSemanticProblem;
import org.apache.flex.compiler.tree.ASTNodeID;
import org.apache.flex.compiler.tree.as.IASNode;
import org.apache.flex.compiler.tree.mxml.IMXMLClassDefinitionNode;
import org.apache.flex.compiler.tree.mxml.IMXMLComponentNode;
import static org.apache.flex.compiler.mxml.IMXMLLanguageConstants.*;
class MXMLComponentNode extends MXMLFactoryNode implements IMXMLComponentNode
{
/**
* Constructor
*
* @param parent The parent node of this node, or <code>null</code> if there
* is no parent.
*/
MXMLComponentNode(NodeBase parent)
{
super(parent);
}
/**
* The name of the class as specified by the <code>className</code>
* attribute. This may be <code>null</code>.
*/
private String className;
/**
* The class-defining node which is the sole child of this node.
*/
private MXMLClassDefinitionNode containedClassDefinitionNode;
@Override
public ASTNodeID getNodeID()
{
return ASTNodeID.MXMLComponentID;
}
@Override
public String getName()
{
IClassDefinition classDefinition = getContainedClassDefinition();
// The classDefinition can be null when Component tag is partially written
// i.e., with no component inside it
// e.g. <fx:Component></fx:Component>
return classDefinition != null ? classDefinition.getBaseName() : "";
}
@Override
public int getChildCount()
{
return containedClassDefinitionNode != null ? 1 : 0;
}
@Override
public IASNode getChild(int i)
{
return i == 0 ? containedClassDefinitionNode : null;
}
@Override
protected void processTagSpecificAttribute(MXMLTreeBuilder builder, IMXMLTagData tag,
IMXMLTagAttributeData attribute,
MXMLNodeInfo info)
{
if (attribute.isSpecialAttribute(ATTRIBUTE_CLASS_NAME))
{
if (className == null)
{
// TODO Check that the class name is a valid AS identifier
// and doesn't have conflicts with other names.
String rawValue = attribute.getRawValue();
if (rawValue != null)
className = attribute.getMXMLDialect().trim(rawValue);
}
}
else
{
super.processTagSpecificAttribute(builder, tag, attribute, info);
}
}
@Override
protected void processChildTag(MXMLTreeBuilder builder, IMXMLTagData tag,
IMXMLTagData childTag,
MXMLNodeInfo info)
{
boolean handled = false;
if (containedClassDefinitionNode == null)
{
containedClassDefinitionNode = new MXMLClassDefinitionNode(this);
handled = true;
// check also that there is only one child tag and that
// there are no text units around the child tag
FlexProject project = builder.getProject();
IDefinition tagDef = builder.getFileScope().resolveTagToDefinition(childTag);
// Check that the root tag mapped to a definition.
if (tagDef == null)
{
// TODO Add a problem subclass for this.
ICompilerProblem problem = new MXMLSemanticProblem(childTag);
builder.addProblem(problem);
}
// Check that the definition is for a class.
if (!(tagDef instanceof IClassDefinition))
{
// TODO Add a problem subclass for this.
ICompilerProblem problem = new MXMLSemanticProblem(childTag);
builder.addProblem(problem);
}
IClassDefinition tagDefinition = (IClassDefinition)tagDef;
// Check that the class is not final.
if (tagDefinition.isFinal())
{
// TODO Add a problem subclass for this.
ICompilerProblem problem = new MXMLSemanticProblem(childTag);
builder.addProblem(problem);
}
// Find the ClassDefinition that was created for the component class.
MXMLFileScope fileScope = builder.getFileScope();
ClassDefinition fxComponentClassDefinition =
fileScope.getClassDefinitionForComponentTag(tag);
assert fxComponentClassDefinition != null : "MXMLScopeBuilder failed to build a class for an fx:Component";
// attach scope with the component class definition node.
TypeScope componentClassScope = (TypeScope)fxComponentClassDefinition.getContainedScope();
containedClassDefinitionNode.setScope(componentClassScope); // TODO Move this logic to initializeFromTag().
// Connect node to definitions and vice versa.
containedClassDefinitionNode.setClassReference(project, tagDefinition); // TODO Move this logic to initializeFromTag().
containedClassDefinitionNode.setClassDefinition(fxComponentClassDefinition); // TODO Move this logic to initializeFromTag().
int nameStart = fxComponentClassDefinition.getNameStart();
int nameEnd = fxComponentClassDefinition.getNameEnd();
fxComponentClassDefinition.setNode(containedClassDefinitionNode);
// TODO The above call is setting nameStart and nameEnd to -1
// because the MXML class definition node doesn't have a name expression node.
// We need to reset the correct nameStart and nameEnd.
fxComponentClassDefinition.setNameLocation(nameStart, nameEnd);
containedClassDefinitionNode.initializeFromTag(builder, childTag);
}
if (!handled)
{
super.processChildTag(builder, tag, childTag, info);
}
}
@Override
public String getClassName()
{
return className;
}
@Override
public IMXMLClassDefinitionNode getContainedClassDefinitionNode()
{
return containedClassDefinitionNode;
}
@Override
public IClassDefinition getContainedClassDefinition()
{
return containedClassDefinitionNode != null ?
containedClassDefinitionNode.getClassDefinition() :
null;
}
}