/*******************************************************************************
* Copyright (c) 2006 Oracle Corporation.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Cameron Bateman/Oracle - initial API and implementation
*
********************************************************************************/
package org.eclipse.jst.jsf.context.symbol.internal.impl;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.StringTokenizer;
import org.eclipse.emf.common.notify.Notification;
import org.eclipse.emf.common.util.BasicEList;
import org.eclipse.emf.common.util.ECollections;
import org.eclipse.emf.common.util.EList;
import org.eclipse.emf.ecore.EClass;
import org.eclipse.emf.ecore.impl.ENotificationImpl;
import org.eclipse.jdt.core.IType;
import org.eclipse.jdt.core.Signature;
import org.eclipse.jst.jsf.common.internal.types.TypeConstants;
import org.eclipse.jst.jsf.context.symbol.IInstanceSymbol;
import org.eclipse.jst.jsf.context.symbol.IJavaTypeDescriptor2;
import org.eclipse.jst.jsf.context.symbol.IMapTypeDescriptor;
import org.eclipse.jst.jsf.context.symbol.IObjectSymbol;
import org.eclipse.jst.jsf.context.symbol.IPropertySymbol;
import org.eclipse.jst.jsf.context.symbol.ITypeDescriptor;
import org.eclipse.jst.jsf.context.symbol.SymbolFactory;
import org.eclipse.jst.jsf.context.symbol.SymbolPackage;
/**
* <!-- begin-user-doc -->
* An implementation of the model object '<em><b>IMap Type Descriptor</b></em>'.
* <!-- end-user-doc -->
* <p>
* The following features are implemented:
* <ul>
* <li>{@link org.eclipse.jst.jsf.context.symbol.internal.impl.IMapTypeDescriptorImpl#getMapSource <em>Map Source</em>}</li>
* <li>{@link org.eclipse.jst.jsf.context.symbol.internal.impl.IMapTypeDescriptorImpl#isImmutable <em>Immutable</em>}</li>
* </ul>
* </p>
*
* @generated
*/
public class IMapTypeDescriptorImpl extends ITypeDescriptorImpl implements IMapTypeDescriptor {
/**
* <!-- begin-user-doc -->
* <!-- end-user-doc -->
* @generated
*/
@SuppressWarnings("hiding")
public static final String copyright = "Copyright 2006 Oracle"; //$NON-NLS-1$
/**
* The default value of the '{@link #getMapSource() <em>Map Source</em>}' attribute.
* <!-- begin-user-doc -->
* <!-- end-user-doc -->
* @see #getMapSource()
* @generated
* @ordered
*/
protected static final Map MAP_SOURCE_EDEFAULT = null;
/**
* The cached value of the '{@link #getMapSource() <em>Map Source</em>}' attribute.
* <!-- begin-user-doc -->
* <!-- end-user-doc -->
* @see #getMapSource()
* @generated
* @ordered
*/
protected Map mapSource = MAP_SOURCE_EDEFAULT;
/**
* The default value of the '{@link #isImmutable() <em>Immutable</em>}' attribute.
* <!-- begin-user-doc -->
* <!-- end-user-doc -->
* @see #isImmutable()
* @generated
* @ordered
*/
protected static final boolean IMMUTABLE_EDEFAULT = true;
private static final Object MAP_TYPE_DESCRIPTOR_PROP_KEY = new Object();
/**
* The cached value of the '{@link #isImmutable() <em>Immutable</em>}' attribute.
* <!-- begin-user-doc -->
* <!-- end-user-doc -->
* @see #isImmutable()
* @generated
* @ordered
*/
protected boolean immutable = IMMUTABLE_EDEFAULT;
/**
* <!-- begin-user-doc -->
* <!-- end-user-doc -->
* @generated
*/
protected IMapTypeDescriptorImpl() {
super();
}
/**
* <!-- begin-user-doc -->
* @return the static eClass
* <!-- end-user-doc -->
* @generated
*/
protected EClass eStaticClass() {
return SymbolPackage.Literals.IMAP_TYPE_DESCRIPTOR;
}
/**
* <!-- begin-user-doc -->
* @return the map source
* <!-- end-user-doc -->
* @generated
*/
public Map getMapSource() {
return mapSource;
}
/**
* <!-- begin-user-doc -->
* @param newMapSource
* <!-- end-user-doc -->
* @generated
*/
public void setMapSource(Map newMapSource) {
Map oldMapSource = mapSource;
mapSource = newMapSource;
if (eNotificationRequired())
eNotify(new ENotificationImpl(this, Notification.SET, SymbolPackage.IMAP_TYPE_DESCRIPTOR__MAP_SOURCE, oldMapSource, mapSource));
}
/**
* <!-- begin-user-doc -->
* @return true if this map is immutable as defined in the java.util.Map
* interface.
* <!-- end-user-doc -->
* @generated
*/
public boolean isImmutable() {
return immutable;
}
/**
* <!-- begin-user-doc -->
* @param newImmutable
* <!-- end-user-doc -->
* @generated
*/
public void setImmutable(boolean newImmutable) {
boolean oldImmutable = immutable;
immutable = newImmutable;
if (eNotificationRequired())
eNotify(new ENotificationImpl(this, Notification.SET, SymbolPackage.IMAP_TYPE_DESCRIPTOR__IMMUTABLE, oldImmutable, immutable));
}
/* (non-Javadoc)
* @see org.eclipse.jst.jsf.context.symbol.internal.impl.ITypeDescriptorImpl#getTypeSignature()
* @generated NOT
*/
public String getTypeSignature()
{
// if the delegate has been set, use it
if (eIsSet(SymbolPackage.IMAP_TYPE_DESCRIPTOR__TYPE_SIGNATURE_DELEGATE))
{
return getTypeSignatureDelegate();
}
// otherwise use Map
return TypeConstants.TYPE_MAP;
}
public EList getInterfaceTypeSignatures() {
return ECollections.EMPTY_ELIST;
}
public EList getSuperTypeSignatures() {
return ECollections.EMPTY_ELIST;
}
/**
* @see org.eclipse.jst.jsf.context.symbol.internal.impl.ITypeDescriptorImpl#getProperties()
*/
public EList getProperties()
{
final BasicEList list = new BasicEList();
final Map source = getMapSource();
if (source instanceof IMapSourceInfo)
{
if (!((IMapSourceInfo) source).hasChanged(MAP_TYPE_DESCRIPTOR_PROP_KEY))
{
EList cachedList = (EList) ((IMapSourceInfo)source).getCachedValue(MAP_TYPE_DESCRIPTOR_PROP_KEY);
if (cachedList != null)
{
return cachedList;
}
}
}
final Map segmentMap = processSegments(source);
list.addAll(segmentMap.values());
if (source instanceof IMapSourceInfo)
{
((IMapSourceInfo)source).putCachedValue(MAP_TYPE_DESCRIPTOR_PROP_KEY, list);
}
return list;
}
public EList getMethods()
{
// TODO: should this return the methods on a Map?
return ECollections.EMPTY_ELIST;
}
/**
* @generated NOT
*/
public IObjectSymbol getArrayElement()
{
return null;
}
/**
* @generated NOT
*/
public boolean isArray()
{
// a map is never an array
return false;
}
private Map processSegments(final Map source)
{
final Map segmentMap = new HashMap();
final Set<Map.Entry<String, Object>> entrySet = source.entrySet();
for (final Map.Entry<String, Object> entry : entrySet)
{
final String key = entry.getKey();
final String segments[] = fastTokenSplit(key);
if (segments.length == 0)
{
continue;
}
IPropertySymbol property = (IPropertySymbol) segmentMap
.get(segments[0]);
if (property == null)
{
final Object propValue = entry.getValue();
property = SymbolFactory.eINSTANCE.createIPropertySymbol();
property.setName(segments[0]);
ITypeDescriptor typeDesc = null;
// TODO: need wrapper object to rationalize
if (propValue != null)
{
if (propValue instanceof IType)
{
typeDesc = SymbolFactory.eINSTANCE
.createIJavaTypeDescriptor2();
((IJavaTypeDescriptor2) typeDesc)
.setType((IType) propValue);
} else if (propValue instanceof IInstanceSymbol)
{
typeDesc = ((IInstanceSymbol) propValue)
.getTypeDescriptor();
} else if (propValue instanceof IPropertySymbol)
{
typeDesc = ((IPropertySymbol) propValue)
.getTypeDescriptor();
} else
{
final String className = propValue.getClass().getName();
final String typeSignature = Signature
.createTypeSignature(className, true);
typeDesc = SymbolFactory.eINSTANCE
.createIMapTypeDescriptor();
((IMapTypeDescriptor) typeDesc)
.setMapSource(new HashMap());
((IMapTypeDescriptor) typeDesc)
.setTypeSignatureDelegate(typeSignature);
// inherit this descriptor's mutability
((IMapTypeDescriptor) typeDesc)
.setImmutable(isImmutable());
property.setIntermediate(true); // set the property as
// intermediate until we
// find out different
}
property.setTypeDescriptor(typeDesc);
property.setReadable(true);
// is only writable if map is not immutable
property.setWritable(!isImmutable());
}
segmentMap.put(segments[0], property);
}
final ITypeDescriptor typeDesc = property.getTypeDescriptor();
if (typeDesc instanceof IMapTypeDescriptor)
{
if (segments.length == 1)
{
// TODO: not always allowed
// ((IMapTypeDescriptor)typeDesc).getMapSource().put(null,
// source.get(key));
// property is more than simply intermediate
property.setIntermediate(false);
} else
{
((IMapTypeDescriptor) typeDesc).getMapSource().put(
key.substring(key.indexOf('.') + 1),
entry.getValue());
}
}
}
return segmentMap;
}
/**
* Based on measurements, this beats Pattern.split by 15-30% even with
* a pre-compiled pattern.
*
* @param splitValue
* @return the array of strings split by the '.' token
*/
private static String[] fastTokenSplit(final String splitValue)
{
if (splitValue == null || splitValue.length() == 0)
{
return new String[0];
}
if (splitValue.indexOf('.') > -1)
{
return tokenizerSplit(splitValue);
}
return new String[] {splitValue};
}
private static String[] tokenizerSplit(final String splitValue)
{
StringTokenizer stringTokenizer = new StringTokenizer(splitValue, "."); //$NON-NLS-1$
// initialize to a large size, since we're just going to truncate
// it once at the end and want to reduce the chance of resize during
// the loop.
final List<String> splitValues = new ArrayList<String>(32);
while (stringTokenizer.hasMoreTokens())
{
splitValues.add(stringTokenizer.nextToken());
}
return splitValues.toArray(new String[0]);
}
/**
* <!-- begin-user-doc -->
* @param featureID
* @param resolve
* @param coreType
* @return the object for the feature id
* <!-- end-user-doc -->
* @generated
*/
public Object eGet(int featureID, boolean resolve, boolean coreType) {
switch (featureID) {
case SymbolPackage.IMAP_TYPE_DESCRIPTOR__MAP_SOURCE:
return getMapSource();
case SymbolPackage.IMAP_TYPE_DESCRIPTOR__IMMUTABLE:
return isImmutable() ? Boolean.TRUE : Boolean.FALSE;
}
return super.eGet(featureID, resolve, coreType);
}
/**
* <!-- begin-user-doc -->
* @param featureID
* @param newValue
* <!-- end-user-doc -->
* @generated
*/
public void eSet(int featureID, Object newValue) {
switch (featureID) {
case SymbolPackage.IMAP_TYPE_DESCRIPTOR__MAP_SOURCE:
setMapSource((Map)newValue);
return;
case SymbolPackage.IMAP_TYPE_DESCRIPTOR__IMMUTABLE:
setImmutable(((Boolean)newValue).booleanValue());
return;
}
super.eSet(featureID, newValue);
}
/**
* <!-- begin-user-doc -->
* @param featureID
* <!-- end-user-doc -->
* @generated
*/
public void eUnset(int featureID) {
switch (featureID) {
case SymbolPackage.IMAP_TYPE_DESCRIPTOR__MAP_SOURCE:
setMapSource(MAP_SOURCE_EDEFAULT);
return;
case SymbolPackage.IMAP_TYPE_DESCRIPTOR__IMMUTABLE:
setImmutable(IMMUTABLE_EDEFAULT);
return;
}
super.eUnset(featureID);
}
/**
* <!-- begin-user-doc -->
* @param featureID
* @return true if is set
* <!-- end-user-doc -->
* @generated
*/
public boolean eIsSet(int featureID) {
switch (featureID) {
case SymbolPackage.IMAP_TYPE_DESCRIPTOR__MAP_SOURCE:
return MAP_SOURCE_EDEFAULT == null ? mapSource != null : !MAP_SOURCE_EDEFAULT.equals(mapSource);
case SymbolPackage.IMAP_TYPE_DESCRIPTOR__IMMUTABLE:
return immutable != IMMUTABLE_EDEFAULT;
}
return super.eIsSet(featureID);
}
/**
* <!-- begin-user-doc -->
* @return the string representation
* <!-- end-user-doc -->
* @generated
*/
public String toString() {
if (eIsProxy()) return super.toString();
StringBuffer result = new StringBuffer(super.toString());
result.append(" (mapSource: "); //$NON-NLS-1$
result.append(mapSource);
result.append(", immutable: "); //$NON-NLS-1$
result.append(immutable);
result.append(')');
return result.toString();
}
} //IMapTypeDescriptorImpl