/*******************************************************************************
 * 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.Collection;
import java.util.Iterator;

import org.eclipse.emf.common.notify.Notification;
import org.eclipse.emf.common.util.EList;
import org.eclipse.emf.ecore.EClass;
import org.eclipse.emf.ecore.impl.ENotificationImpl;
import org.eclipse.emf.ecore.impl.EObjectImpl;
import org.eclipse.emf.ecore.util.EDataTypeEList;
import org.eclipse.jdt.core.IJavaElement;
import org.eclipse.jdt.core.IJavaProject;
import org.eclipse.jdt.core.IType;
import org.eclipse.jdt.core.Signature;
import org.eclipse.jst.jsf.common.util.TypeUtil;
import org.eclipse.jst.jsf.context.symbol.IObjectSymbol;
import org.eclipse.jst.jsf.context.symbol.ISymbol;
import org.eclipse.jst.jsf.context.symbol.ITypeDescriptor;
import org.eclipse.jst.jsf.context.symbol.SymbolPackage;

/**
 * <!-- begin-user-doc -->
 * An implementation of the model object '<em><b>IType Descriptor</b></em>'.
 * <!-- end-user-doc -->
 * <p>
 * The following features are implemented:
 * <ul>
 *   <li>{@link org.eclipse.jst.jsf.context.symbol.internal.impl.ITypeDescriptorImpl#getProperties <em>Properties</em>}</li>
 *   <li>{@link org.eclipse.jst.jsf.context.symbol.internal.impl.ITypeDescriptorImpl#getTypeSignature <em>Type Signature</em>}</li>
 *   <li>{@link org.eclipse.jst.jsf.context.symbol.internal.impl.ITypeDescriptorImpl#getSuperTypeSignatures <em>Super Type Signatures</em>}</li>
 *   <li>{@link org.eclipse.jst.jsf.context.symbol.internal.impl.ITypeDescriptorImpl#getInterfaceTypeSignatures <em>Interface Type Signatures</em>}</li>
 *   <li>{@link org.eclipse.jst.jsf.context.symbol.internal.impl.ITypeDescriptorImpl#getTypeSignatureDelegate <em>Type Signature Delegate</em>}</li>
 *   <li>{@link org.eclipse.jst.jsf.context.symbol.internal.impl.ITypeDescriptorImpl#getMethods <em>Methods</em>}</li>
 * </ul>
 * </p>
 *
 * @generated
 */
public abstract class ITypeDescriptorImpl extends EObjectImpl implements ITypeDescriptor {
    /**
     * <!-- begin-user-doc -->
     * <!-- end-user-doc -->
     * @generated
     */
    public static final String copyright = "Copyright 2006 Oracle"; //$NON-NLS-1$

    /**
     * The default value of the '{@link #getTypeSignature() <em>Type Signature</em>}' attribute.
     * <!-- begin-user-doc -->
     * <!-- end-user-doc -->
     * @see #getTypeSignature()
     * @generated
     * @ordered
     */
    protected static final String TYPE_SIGNATURE_EDEFAULT = ""; //$NON-NLS-1$

    /**
     * The default value of the '{@link #getTypeSignatureDelegate() <em>Type Signature Delegate</em>}' attribute.
     * <!-- begin-user-doc -->
     * <!-- end-user-doc -->
     * @see #getTypeSignatureDelegate()
     * @generated
     * @ordered
     */
    protected static final String TYPE_SIGNATURE_DELEGATE_EDEFAULT = null;

    /**
     * The cached value of the '{@link #getTypeSignatureDelegate() <em>Type Signature Delegate</em>}' attribute.
     * <!-- begin-user-doc -->
     * <!-- end-user-doc -->
     * @see #getTypeSignatureDelegate()
     * @generated
     * @ordered
     */
    protected String typeSignatureDelegate = TYPE_SIGNATURE_DELEGATE_EDEFAULT;

    /**
     * The cached value of the '{@link #getTypeParameterSignatures() <em>Type Parameter Signatures</em>}' attribute list.
     * <!-- begin-user-doc -->
     * <!-- end-user-doc -->
     * @see #getTypeParameterSignatures()
     * @generated
     * @ordered
     */
    protected EList typeParameterSignatures;

    /**
     * The default value of the '{@link #getJdtContext() <em>Jdt Context</em>}' attribute.
     * <!-- begin-user-doc -->
     * <!-- end-user-doc -->
     * @see #getJdtContext()
     * @generated
     * @ordered
     */
    protected static final IJavaElement JDT_CONTEXT_EDEFAULT = null;

    /**
     * The cached value of the '{@link #getJdtContext() <em>Jdt Context</em>}' attribute.
     * <!-- begin-user-doc -->
     * <!-- end-user-doc -->
     * @see #getJdtContext()
     * @generated
     * @ordered
     */
    protected IJavaElement jdtContext = JDT_CONTEXT_EDEFAULT;

    /**
     * The default value of the '{@link #isEnumType() <em>Enum Type</em>}' attribute.
     * <!-- begin-user-doc -->
     * <!-- end-user-doc -->
     * @see #isEnumType()
     * @generated
     * @ordered
     */
    protected static final boolean ENUM_TYPE_EDEFAULT = false;

    /**
     * The cached value of the '{@link #isEnumType() <em>Enum Type</em>}' attribute.
     * <!-- begin-user-doc -->
     * <!-- end-user-doc -->
     * @see #isEnumType()
     * @generated
     * @ordered
     */
    protected boolean enumType = ENUM_TYPE_EDEFAULT;

    /**
     * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
     * @generated
     */
	protected ITypeDescriptorImpl() {
        super();
    }

    /**
     * <!-- begin-user-doc -->
     * @return the static class 
	 * <!-- end-user-doc -->
     * @generated
     */
	protected EClass eStaticClass() {
        return SymbolPackage.Literals.ITYPE_DESCRIPTOR;
    }

    /**
     * <!-- begin-user-doc -->
     * @return get properties for this type 
     * <!-- end-user-doc -->
     * @generated NOT
     */
    public abstract EList getProperties();

    /**
     * <!-- begin-user-doc -->
     * @return the type signature in JVM/JDT signature form 
     * <!-- end-user-doc -->
     * @generated NOT
     */
    public abstract String getTypeSignature();

    /**
     * <!-- begin-user-doc -->
     * @return the list of super types 
     * <!-- end-user-doc -->
     * @generated NOT
     */
    public abstract EList getSuperTypeSignatures();

    /**
     * <!-- begin-user-doc -->
     * @return the list of implemented interfaces
     * <!-- end-user-doc -->
     * @generated NOT
     */
    public abstract EList getInterfaceTypeSignatures();

    /**
     * <!-- begin-user-doc -->
     * @return the type signature delegate.  The descriptor may choose to use
     * this delegate it if it is set and it cannot derive this information
     * from other properties
     * <!-- end-user-doc -->
     * @generated
     */
    public String getTypeSignatureDelegate() {
        return typeSignatureDelegate;
    }

    /**
     * <!-- begin-user-doc -->
     * @param newTypeSignatureDelegate 
     * <!-- end-user-doc -->
     * @generated
     */
    public void setTypeSignatureDelegate(String newTypeSignatureDelegate) {
        String oldTypeSignatureDelegate = typeSignatureDelegate;
        typeSignatureDelegate = newTypeSignatureDelegate;
        if (eNotificationRequired())
            eNotify(new ENotificationImpl(this, Notification.SET, SymbolPackage.ITYPE_DESCRIPTOR__TYPE_SIGNATURE_DELEGATE, oldTypeSignatureDelegate, typeSignatureDelegate));
    }

    /**
     * <!-- begin-user-doc -->
     * @return the methods for this type or empty list if none exist 
     * <!-- end-user-doc -->
     * @generated NOT
     */
    public abstract EList getMethods();

    /**
     * <!-- begin-user-doc -->
     * <!-- end-user-doc -->
     * @generated
     */
    public EList getTypeParameterSignatures() {
        if (typeParameterSignatures == null) {
            typeParameterSignatures = new EDataTypeEList(String.class, this, SymbolPackage.ITYPE_DESCRIPTOR__TYPE_PARAMETER_SIGNATURES);
        }
        return typeParameterSignatures;
    }

    /**
     * <!-- begin-user-doc -->
     * <!-- end-user-doc -->
     * @generated
     */
    public IJavaElement getJdtContext() {
        return jdtContext;
    }

    /**
     * <!-- begin-user-doc -->
     * <!-- end-user-doc -->
     * @generated
     */
    public void setJdtContext(IJavaElement newJdtContext) {
        IJavaElement oldJdtContext = jdtContext;
        jdtContext = newJdtContext;
        if (eNotificationRequired())
            eNotify(new ENotificationImpl(this, Notification.SET, SymbolPackage.ITYPE_DESCRIPTOR__JDT_CONTEXT, oldJdtContext, jdtContext));
    }

    /**
     * <!-- begin-user-doc -->
     * <!-- end-user-doc -->
     * @generated
     */
    public boolean isEnumType() {
        return enumType;
    }

    /**
     * <!-- begin-user-doc -->
     * <!-- end-user-doc -->
     * @generated
     */
    public void setEnumType(boolean newEnumType) {
        boolean oldEnumType = enumType;
        enumType = newEnumType;
        if (eNotificationRequired())
            eNotify(new ENotificationImpl(this, Notification.SET, SymbolPackage.ITYPE_DESCRIPTOR__ENUM_TYPE, oldEnumType, enumType));
    }

    /**
     * <!-- begin-user-doc -->
     * Note about generics:
     * 
     * This call mimics the runtime instanceOf to the degree possible.
     * Therefore, any type parameters (<...>) in typeSignature will be
     * deleted using Signature.getTypeErasure() since this data won't be
     * available at runtime.
     * <!-- end-user-doc -->
     * @generated NOT
     */
    public boolean instanceOf(final String typeSignature) 
    {
        final String typeErasedSignature = Signature.getTypeErasure(typeSignature);
        
        if (Signature.getTypeErasure(getTypeSignature()) != null
                && Signature.getTypeErasure(getTypeSignature()).equals(typeErasedSignature))
        {
            return true;
        }
        
        for (final Iterator it = getSuperTypeSignatures().iterator(); it.hasNext();)
        {
            final String superType = (String) it.next();
            
            if (Signature.getTypeErasure(superType).equals(typeErasedSignature))
            {
                return true;
            }
        }
        
        for (final Iterator it = getInterfaceTypeSignatures().iterator(); it.hasNext();)
        {
            final String superType = (String) it.next();
            
            if (Signature.getTypeErasure(superType).equals(typeErasedSignature))
            {
                return true;
            }
        }
        
        return false;
    }

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated NOT
	 */
	public boolean isArray()
	{
		return Signature.getArrayCount(getTypeSignature()) > 0;
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated NOT
	 */
	public IObjectSymbol getArrayElement() 
	{
		if (isArray())
		{
			// sub-class of ITypeDescriptor must implement this if they which to provide
			// array element support
			throw new UnsupportedOperationException("Base type descriptor does not support this function"); //$NON-NLS-1$
		}
		
		// shouldn't be called if not an array
		return null;
	}

    /**
    /**
     * <!-- begin-user-doc -->
     * 
     * Tries to load an IType for a fully resolved (i.e. starts with L not Q)
     * type signature using the current jdtContext.
     * 
     * @return the resolved IType or null if none could be resolved.
     * 
     * <!-- end-user-doc -->
     * @generated NOT
     */
      public IType resolveType(String resolvedTypeSignature) 
      {
          // we need to obtain an IJavaProject within which to resolve
          // the type.
          IJavaProject project = null;
          
          // see if a jdtContext hint has been set
          if (getJdtContext() != null)
          {
              project = getJdtContext().getJavaProject();
          }
          
          if (project != null)
          {
              return TypeUtil.resolveType(project, resolvedTypeSignature);
          }
          
          return null;
      }

    /**
     * <!-- begin-user-doc -->
     * <!-- end-user-doc -->
     * @generated NOT
     */
    public ISymbol calculateSyntheticCall(String methodName, EList methodArgs, String symbolName) {
        // sub-classes need only implement if they have something meaningful
        // the want to do here
        // by default return null to indicate this type descriptor doesn't
        // wish to handle calls
        return null;
    }

    /**
     * <!-- begin-user-doc -->
     * @param featureID 
     * @param resolve 
     * @param coreType 
     * @return get the feature 
     * <!-- end-user-doc -->
     * @generated
     */
    public Object eGet(int featureID, boolean resolve, boolean coreType) {
        switch (featureID) {
            case SymbolPackage.ITYPE_DESCRIPTOR__PROPERTIES:
                return getProperties();
            case SymbolPackage.ITYPE_DESCRIPTOR__TYPE_SIGNATURE:
                return getTypeSignature();
            case SymbolPackage.ITYPE_DESCRIPTOR__SUPER_TYPE_SIGNATURES:
                return getSuperTypeSignatures();
            case SymbolPackage.ITYPE_DESCRIPTOR__INTERFACE_TYPE_SIGNATURES:
                return getInterfaceTypeSignatures();
            case SymbolPackage.ITYPE_DESCRIPTOR__TYPE_SIGNATURE_DELEGATE:
                return getTypeSignatureDelegate();
            case SymbolPackage.ITYPE_DESCRIPTOR__METHODS:
                return getMethods();
        }
        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.ITYPE_DESCRIPTOR__PROPERTIES:
                getProperties().clear();
                getProperties().addAll((Collection)newValue);
                return;
            case SymbolPackage.ITYPE_DESCRIPTOR__SUPER_TYPE_SIGNATURES:
                getSuperTypeSignatures().clear();
                getSuperTypeSignatures().addAll((Collection)newValue);
                return;
            case SymbolPackage.ITYPE_DESCRIPTOR__INTERFACE_TYPE_SIGNATURES:
                getInterfaceTypeSignatures().clear();
                getInterfaceTypeSignatures().addAll((Collection)newValue);
                return;
            case SymbolPackage.ITYPE_DESCRIPTOR__TYPE_SIGNATURE_DELEGATE:
                setTypeSignatureDelegate((String)newValue);
                return;
            case SymbolPackage.ITYPE_DESCRIPTOR__METHODS:
                getMethods().clear();
                getMethods().addAll((Collection)newValue);
                return;
        }
        super.eSet(featureID, newValue);
    }

    /**
     * <!-- begin-user-doc -->
     * @param featureID 
     * <!-- end-user-doc -->
     * @generated
     */
    public void eUnset(int featureID) {
        switch (featureID) {
            case SymbolPackage.ITYPE_DESCRIPTOR__PROPERTIES:
                getProperties().clear();
                return;
            case SymbolPackage.ITYPE_DESCRIPTOR__SUPER_TYPE_SIGNATURES:
                getSuperTypeSignatures().clear();
                return;
            case SymbolPackage.ITYPE_DESCRIPTOR__INTERFACE_TYPE_SIGNATURES:
                getInterfaceTypeSignatures().clear();
                return;
            case SymbolPackage.ITYPE_DESCRIPTOR__TYPE_SIGNATURE_DELEGATE:
                setTypeSignatureDelegate(TYPE_SIGNATURE_DELEGATE_EDEFAULT);
                return;
            case SymbolPackage.ITYPE_DESCRIPTOR__METHODS:
                getMethods().clear();
                return;
        }
        super.eUnset(featureID);
    }

    /**
     * <!-- begin-user-doc -->
     * @param featureID 
     * @return true if feature has been set 
     * <!-- end-user-doc -->
     * @generated
     */
    public boolean eIsSet(int featureID) {
        switch (featureID) {
            case SymbolPackage.ITYPE_DESCRIPTOR__PROPERTIES:
                return !getProperties().isEmpty();
            case SymbolPackage.ITYPE_DESCRIPTOR__TYPE_SIGNATURE:
                return TYPE_SIGNATURE_EDEFAULT == null ? getTypeSignature() != null : !TYPE_SIGNATURE_EDEFAULT.equals(getTypeSignature());
            case SymbolPackage.ITYPE_DESCRIPTOR__SUPER_TYPE_SIGNATURES:
                return !getSuperTypeSignatures().isEmpty();
            case SymbolPackage.ITYPE_DESCRIPTOR__INTERFACE_TYPE_SIGNATURES:
                return !getInterfaceTypeSignatures().isEmpty();
            case SymbolPackage.ITYPE_DESCRIPTOR__TYPE_SIGNATURE_DELEGATE:
                return TYPE_SIGNATURE_DELEGATE_EDEFAULT == null ? typeSignatureDelegate != null : !TYPE_SIGNATURE_DELEGATE_EDEFAULT.equals(typeSignatureDelegate);
            case SymbolPackage.ITYPE_DESCRIPTOR__METHODS:
                return !getMethods().isEmpty();
        }
        return super.eIsSet(featureID);
    }

    /**
     * <!-- begin-user-doc -->
     * @return the debug string format of the type signature 
     * <!-- end-user-doc -->
     * @generated
     */
    public String toString() {
        if (eIsProxy()) return super.toString();

        StringBuffer result = new StringBuffer(super.toString());
        result.append(" (typeSignatureDelegate: "); //$NON-NLS-1$
        result.append(typeSignatureDelegate);
        result.append(')');
        return result.toString();
    }
} //ITypeDescriptorImpl