/*
*
* 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.constants.IASLanguageConstants;
import org.apache.flex.compiler.internal.projects.FlexProject;
import org.apache.flex.compiler.internal.tree.as.NodeBase;
import org.apache.flex.compiler.mxml.IMXMLLanguageConstants;
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.MXMLEmptyAttributeProblem;
import org.apache.flex.compiler.problems.MXMLRequiredAttributeProblem;
import org.apache.flex.compiler.problems.MXMLSameBindingSourceAndDestinationProblem;
import org.apache.flex.compiler.tree.ASTNodeID;
import org.apache.flex.compiler.tree.as.IASNode;
import org.apache.flex.compiler.tree.mxml.IMXMLBindingAttributeNode;
import org.apache.flex.compiler.tree.mxml.IMXMLBindingNode;
import static org.apache.flex.compiler.mxml.IMXMLLanguageConstants.*;
/**
* Implementation of the {@code IMXMLBindingNode} interface.
*/
class MXMLBindingNode extends MXMLNodeBase implements IMXMLBindingNode
{
/**
* Constructor
*
* @param parent The parent node of this node, or <code>null</code> if there
* is no parent.
*/
MXMLBindingNode(NodeBase parent)
{
super(parent);
}
private IMXMLBindingAttributeNode[] children = null;
private MXMLBindingAttributeNode sourceAttributeNode = null;
private MXMLBindingAttributeNode destinationAttributeNode = null;
private boolean twoWay = false;
@Override
public ASTNodeID getNodeID()
{
return ASTNodeID.MXMLBindingID;
}
@Override
public String getName()
{
return IMXMLLanguageConstants.BINDING;
}
@Override
public int getChildCount()
{
return children != null ? children.length : 0;
}
@Override
public IASNode getChild(int i)
{
return children != null ? children[i] : null;
}
@Override
protected MXMLNodeInfo createNodeInfo(MXMLTreeBuilder builder)
{
return new MXMLNodeInfo(builder);
}
@Override
protected void processTagSpecificAttribute(MXMLTreeBuilder builder, IMXMLTagData tag,
IMXMLTagAttributeData attribute,
MXMLNodeInfo info)
{
if (attribute.isSpecialAttribute(ATTRIBUTE_SOURCE))
{
sourceAttributeNode = new MXMLBindingAttributeNode(this);
sourceAttributeNode.initializeFromAttribute(builder, attribute);
info.addChildNode(sourceAttributeNode);
}
else if (attribute.isSpecialAttribute(ATTRIBUTE_DESTINATION))
{
destinationAttributeNode = new MXMLBindingAttributeNode(this);
destinationAttributeNode.initializeFromAttribute(builder, attribute);
info.addChildNode(destinationAttributeNode);
}
else if (attribute.isSpecialAttribute(ATTRIBUTE_TWO_WAY))
{
String value = attribute.getMXMLDialect().trim(attribute.getRawValue());
if (value.equals(IASLanguageConstants.TRUE))
twoWay = true;
else if (value.equals(IASLanguageConstants.FALSE))
twoWay = false;
else
{
// TODO Report a problem;
}
}
else
{
super.processTagSpecificAttribute(builder, tag, attribute, info);
}
}
@Override
protected void initializationComplete(MXMLTreeBuilder builder, IMXMLTagData tag,
MXMLNodeInfo info)
{
super.initializationComplete(builder, tag, info);
children = info.getChildNodeList().toArray(new IMXMLBindingAttributeNode[0]);
// Add an expression dependency on mx.binding.BindingManager.
FlexProject project = builder.getProject();
builder.addExpressionDependency(project.getBindingManagerClass());
// Do some semantic checks.
IMXMLTagAttributeData sourceAttribute = tag.getTagAttributeData(ATTRIBUTE_SOURCE);
IMXMLTagAttributeData destinationAttribute = tag.getTagAttributeData(ATTRIBUTE_DESTINATION);
String trimmedSourceValue = null;
String trimmedDestinationValue = null;
if (sourceAttribute == null)
{
// 'source' attribute is required
ICompilerProblem problem = new MXMLRequiredAttributeProblem(tag, ATTRIBUTE_SOURCE);
builder.addProblem(problem);
markInvalidForCodeGen();
}
else
{
trimmedSourceValue = builder.getMXMLDialect().trim(sourceAttribute.getRawValue());
if (trimmedSourceValue.isEmpty())
{
// 'source' attribute value cannot be empty
ICompilerProblem problem = new MXMLEmptyAttributeProblem(sourceAttribute);
builder.addProblem(problem);
markInvalidForCodeGen();
}
}
if (destinationAttribute == null)
{
// 'destination' attribute is required
ICompilerProblem problem = new MXMLRequiredAttributeProblem(tag, ATTRIBUTE_DESTINATION);
builder.addProblem(problem);
markInvalidForCodeGen();
}
else
{
trimmedDestinationValue = builder.getMXMLDialect().trim(destinationAttribute.getRawValue());
if (trimmedDestinationValue.isEmpty())
{
// 'destination' attribute value cannot be empty
ICompilerProblem problem = new MXMLEmptyAttributeProblem(destinationAttribute);
builder.addProblem(problem);
markInvalidForCodeGen();
}
}
if (trimmedSourceValue != null && !trimmedSourceValue.isEmpty() &&
trimmedDestinationValue != null && !trimmedDestinationValue.isEmpty() &&
trimmedSourceValue.equals(trimmedDestinationValue))
{
// 'source' and 'destination' values cannot be the same
// TODO "a.b" and "a . b" won't be detected as the same.
// Should we compare tokens instead?
ICompilerProblem problem = new MXMLSameBindingSourceAndDestinationProblem(tag);
builder.addProblem(problem);
markInvalidForCodeGen();
}
}
@Override
public IMXMLBindingAttributeNode getSourceAttributeNode()
{
return sourceAttributeNode;
}
@Override
public IMXMLBindingAttributeNode getDestinationAttributeNode()
{
return destinationAttributeNode;
}
@Override
public boolean getTwoWay()
{
return twoWay;
}
/**
* For debugging only. Builds a string such as <code>twoWay="true"</code>
* from the attribute name.
*/
@Override
protected boolean buildInnerString(StringBuilder sb)
{
sb.append("twoWay");
sb.append('=');
sb.append('"');
sb.append(twoWay);
sb.append('"');
return true;
}
/**
* Set the destination attribute node - used when creating synthetic
* MXMLBindingNodes
*/
void setDestinationAttributeNode(MXMLBindingAttributeNode dest)
{
this.destinationAttributeNode = dest;
}
/**
* Set the source attribute node - used when creating synthetic
* MXMLBindingNodes
*/
void setSourceAttributeNode(MXMLBindingAttributeNode src)
{
this.sourceAttributeNode = src;
}
}