/**
 * <copyright>
 *
 * Copyright (c) 2013, 2020 Willink Transformations and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v2.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v20.html
 *
 * Contributors:
 *   E.D.Willink - Initial API and implementation
 *
 * </copyright>
 */
package org.eclipse.qvtd.pivot.qvtimperative.impl;

import java.lang.reflect.InvocationTargetException;
import java.util.Collection;
import java.util.Map;

import org.eclipse.emf.common.notify.Notification;
import org.eclipse.emf.common.notify.NotificationChain;
import org.eclipse.emf.common.util.DiagnosticChain;
import org.eclipse.emf.common.util.EList;
import org.eclipse.emf.ecore.EClass;
import org.eclipse.emf.ecore.InternalEObject;
import org.eclipse.emf.ecore.impl.ENotificationImpl;
import org.eclipse.emf.ecore.util.EObjectResolvingEList;
import org.eclipse.jdt.annotation.NonNull;
import org.eclipse.jdt.annotation.Nullable;
import org.eclipse.ocl.pivot.OCLExpression;
import org.eclipse.ocl.pivot.Property;
import org.eclipse.ocl.pivot.Type;
import org.eclipse.ocl.pivot.evaluation.Executor;
import org.eclipse.ocl.pivot.ids.TypeId;
import org.eclipse.ocl.pivot.internal.NamedElementImpl;
import org.eclipse.ocl.pivot.internal.VariableDeclarationImpl;
import org.eclipse.ocl.pivot.library.classifier.OclTypeConformsToOperation;
import org.eclipse.ocl.pivot.library.oclany.OclComparableLessThanEqualOperation;
import org.eclipse.ocl.pivot.library.string.CGStringGetSeverityOperation;
import org.eclipse.ocl.pivot.library.string.CGStringLogDiagnosticOperation;
import org.eclipse.ocl.pivot.util.Visitor;
import org.eclipse.ocl.pivot.utilities.PivotUtil;
import org.eclipse.ocl.pivot.utilities.ValueUtil;
import org.eclipse.ocl.pivot.values.IntegerValue;
import org.eclipse.ocl.pivot.values.InvalidValueException;
import org.eclipse.qvtd.pivot.qvtimperative.DeclareStatement;
import org.eclipse.qvtd.pivot.qvtimperative.ObservableStatement;
import org.eclipse.qvtd.pivot.qvtimperative.QVTimperativePackage;
import org.eclipse.qvtd.pivot.qvtimperative.QVTimperativeTables;
import org.eclipse.qvtd.pivot.qvtimperative.util.QVTimperativeVisitor;

/**
 * <!-- begin-user-doc -->
 * An implementation of the model object '<em><b>Predicate Variable</b></em>'.
 * <!-- end-user-doc -->
 * <p>
 * The following features are implemented:
 * </p>
 * <ul>
 *   <li>{@link org.eclipse.qvtd.pivot.qvtimperative.impl.DeclareStatementImpl#getObservedProperties <em>Observed Properties</em>}</li>
 *   <li>{@link org.eclipse.qvtd.pivot.qvtimperative.impl.DeclareStatementImpl#isIsCheck <em>Is Check</em>}</li>
 *   <li>{@link org.eclipse.qvtd.pivot.qvtimperative.impl.DeclareStatementImpl#getOwnedExpression <em>Owned Expression</em>}</li>
 * </ul>
 *
 * @generated
 */
public class DeclareStatementImpl extends VariableStatementImpl implements DeclareStatement {
	/**
	 * The number of structural features of the '<em>Declare Statement</em>' class.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 * @ordered
	 */
	public static final int DECLARE_STATEMENT_FEATURE_COUNT = VariableStatementImpl.VARIABLE_STATEMENT_FEATURE_COUNT + 3;

	/**
	 * The number of operations of the '<em>Declare Statement</em>' class.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 * @ordered
	 */
	public static final int DECLARE_STATEMENT_OPERATION_COUNT = VariableStatementImpl.VARIABLE_STATEMENT_OPERATION_COUNT + 1;

	/**
	 * The cached value of the '{@link #getObservedProperties() <em>Observed Properties</em>}' reference list.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @see #getObservedProperties()
	 * @generated
	 * @ordered
	 */
	protected EList<Property> observedProperties;

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

	/**
	 * The cached value of the '{@link #isIsCheck() <em>Is Check</em>}' attribute.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @see #isIsCheck()
	 * @generated
	 * @ordered
	 */
	protected boolean isCheck = IS_CHECK_EDEFAULT;

	/**
	 * The cached value of the '{@link #getOwnedExpression() <em>Owned Expression</em>}' containment reference.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @see #getOwnedExpression()
	 * @generated
	 * @ordered
	 */
	protected OCLExpression ownedExpression;

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

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	protected EClass eStaticClass() {
		return QVTimperativePackage.Literals.DECLARE_STATEMENT;
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	public EList<Property> getObservedProperties() {
		if (observedProperties == null) {
			observedProperties = new EObjectResolvingEList<Property>(Property.class, this, VariableDeclarationImpl.VARIABLE_DECLARATION_FEATURE_COUNT + 0);
		}
		return observedProperties;
	}

	@Override
	public @Nullable EList<Property> basicGetObservedProperties() {
		return observedProperties;
	}

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

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	public void setIsCheck(boolean newIsCheck) {
		boolean oldIsCheck = isCheck;
		isCheck = newIsCheck;
		if (eNotificationRequired())
			eNotify(new ENotificationImpl(this, Notification.SET, VariableDeclarationImpl.VARIABLE_DECLARATION_FEATURE_COUNT + 1, oldIsCheck, isCheck));
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	public OCLExpression getOwnedExpression() {
		return ownedExpression;
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public NotificationChain basicSetOwnedExpression(OCLExpression newOwnedExpression, NotificationChain msgs) {
		OCLExpression oldOwnedExpression = ownedExpression;
		ownedExpression = newOwnedExpression;
		if (eNotificationRequired()) {
			ENotificationImpl notification = new ENotificationImpl(this, Notification.SET, VariableDeclarationImpl.VARIABLE_DECLARATION_FEATURE_COUNT + 2, oldOwnedExpression, newOwnedExpression);
			if (msgs == null) msgs = notification; else msgs.add(notification);
		}
		return msgs;
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	public void setOwnedExpression(OCLExpression newOwnedExpression) {
		if (newOwnedExpression != ownedExpression) {
			NotificationChain msgs = null;
			if (ownedExpression != null)
				msgs = ((InternalEObject)ownedExpression).eInverseRemove(this, EOPPOSITE_FEATURE_BASE - (VariableDeclarationImpl.VARIABLE_DECLARATION_FEATURE_COUNT + 2), null, msgs);
			if (newOwnedExpression != null)
				msgs = ((InternalEObject)newOwnedExpression).eInverseAdd(this, EOPPOSITE_FEATURE_BASE - (VariableDeclarationImpl.VARIABLE_DECLARATION_FEATURE_COUNT + 2), null, msgs);
			msgs = basicSetOwnedExpression(newOwnedExpression, msgs);
			if (msgs != null) msgs.dispatch();
		}
		else if (eNotificationRequired())
			eNotify(new ENotificationImpl(this, Notification.SET, VariableDeclarationImpl.VARIABLE_DECLARATION_FEATURE_COUNT + 2, newOwnedExpression, newOwnedExpression));
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	public boolean validateCompatibleTypeForUncheckedValue(final DiagnosticChain diagnostics, final Map<Object, Object> context) {
		final @NonNull String constraintName = "DeclareStatement::CompatibleTypeForUncheckedValue";
		try {
			/**
			 *
			 * inv CompatibleTypeForUncheckedValue:
			 *   let severity : Integer[1] = constraintName.getSeverity()
			 *   in
			 *     if severity <= 0
			 *     then true
			 *     else
			 *       let result : Boolean[?] = not isCheck implies
			 *         ownedExpression.type?.conformsTo(type)
			 *       in
			 *         constraintName.logDiagnostic(self, null, diagnostics, context, null, severity, result, 0)
			 *     endif
			 */
			final /*@NonInvalid*/ @NonNull Executor executor = PivotUtil.getExecutor(this);
			final /*@NonInvalid*/ @NonNull IntegerValue severity_0 = CGStringGetSeverityOperation.INSTANCE.evaluate(executor, QVTimperativePackage.Literals.DECLARE_STATEMENT___VALIDATE_COMPATIBLE_TYPE_FOR_UNCHECKED_VALUE__DIAGNOSTICCHAIN_MAP);
			final /*@NonInvalid*/ boolean le = OclComparableLessThanEqualOperation.INSTANCE.evaluate(executor, severity_0, QVTimperativeTables.INT_0).booleanValue();
			/*@NonInvalid*/ boolean symbol_0;
			if (le) {
				symbol_0 = true;
			}
			else {
				/*@Caught*/ @Nullable Object CAUGHT_result;
				try {
					final /*@NonInvalid*/ boolean isCheck = this.isIsCheck();
					final /*@NonInvalid*/ @Nullable Boolean not;
					if (!isCheck) {
						not = ValueUtil.TRUE_VALUE;
					}
					else {
						if (isCheck) {
							not = ValueUtil.FALSE_VALUE;
						}
						else {
							not = null;
						}
					}
					final /*@Thrown*/ @Nullable Boolean result;
					if (not == ValueUtil.FALSE_VALUE) {
						result = ValueUtil.TRUE_VALUE;
					}
					else {
						/*@Caught*/ @Nullable Object CAUGHT_safe_conformsTo_source;
						try {
							@SuppressWarnings("null")
							final /*@NonInvalid*/ @NonNull OCLExpression ownedExpression = this.getOwnedExpression();
							final /*@NonInvalid*/ @Nullable Type type = ownedExpression.getType();
							final /*@NonInvalid*/ @NonNull Object conformsTo = type == null;
							/*@Thrown*/ @Nullable Boolean safe_conformsTo_source;
							if (conformsTo == Boolean.TRUE) {
								safe_conformsTo_source = null;
							}
							else {
								if (type == null) {
									throw new InvalidValueException("Null \'\'Type\'\' rather than \'\'OclVoid\'\' value required");
								}
								final /*@NonInvalid*/ @Nullable Type type_0 = this.getType();
								final /*@Thrown*/ boolean conformsTo_0 = OclTypeConformsToOperation.INSTANCE.evaluate(executor, type, type_0).booleanValue();
								safe_conformsTo_source = conformsTo_0;
							}
							CAUGHT_safe_conformsTo_source = safe_conformsTo_source;
						}
						catch (Exception e) {
							CAUGHT_safe_conformsTo_source = ValueUtil.createInvalidValue(e);
						}
						if (CAUGHT_safe_conformsTo_source == ValueUtil.TRUE_VALUE) {
							result = ValueUtil.TRUE_VALUE;
						}
						else {
							if (CAUGHT_safe_conformsTo_source instanceof InvalidValueException) {
								throw (InvalidValueException)CAUGHT_safe_conformsTo_source;
							}
							if ((not == null) || (CAUGHT_safe_conformsTo_source == null)) {
								result = null;
							}
							else {
								result = ValueUtil.FALSE_VALUE;
							}
						}
					}
					CAUGHT_result = result;
				}
				catch (Exception e) {
					CAUGHT_result = ValueUtil.createInvalidValue(e);
				}
				final /*@NonInvalid*/ boolean logDiagnostic = CGStringLogDiagnosticOperation.INSTANCE.evaluate(executor, TypeId.BOOLEAN, constraintName, this, (Object)null, diagnostics, context, (Object)null, severity_0, CAUGHT_result, QVTimperativeTables.INT_0).booleanValue();
				symbol_0 = logDiagnostic;
			}
			return symbol_0;
		}
		catch (Throwable e) {
			return ValueUtil.validationFailedDiagnostic(constraintName, this, diagnostics, context, e);
		}
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated NOT
	 */
	@Override
	public String toString() {
		return super.toString();
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	public NotificationChain eInverseRemove(InternalEObject otherEnd, int featureID, NotificationChain msgs) {
		switch (featureID) {
			case VariableDeclarationImpl.VARIABLE_DECLARATION_FEATURE_COUNT + 2:
				return basicSetOwnedExpression(null, msgs);
		}
		return super.eInverseRemove(otherEnd, featureID, msgs);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	public Object eGet(int featureID, boolean resolve, boolean coreType) {
		switch (featureID) {
			case VariableDeclarationImpl.VARIABLE_DECLARATION_FEATURE_COUNT + 0:
				return getObservedProperties();
			case VariableDeclarationImpl.VARIABLE_DECLARATION_FEATURE_COUNT + 1:
				return isIsCheck();
			case VariableDeclarationImpl.VARIABLE_DECLARATION_FEATURE_COUNT + 2:
				return getOwnedExpression();
		}
		return super.eGet(featureID, resolve, coreType);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@SuppressWarnings("unchecked")
	@Override
	public void eSet(int featureID, Object newValue) {
		switch (featureID) {
			case VariableDeclarationImpl.VARIABLE_DECLARATION_FEATURE_COUNT + 0:
				getObservedProperties().clear();
				getObservedProperties().addAll((Collection<? extends Property>)newValue);
				return;
			case VariableDeclarationImpl.VARIABLE_DECLARATION_FEATURE_COUNT + 1:
				setIsCheck((Boolean)newValue);
				return;
			case VariableDeclarationImpl.VARIABLE_DECLARATION_FEATURE_COUNT + 2:
				setOwnedExpression((OCLExpression)newValue);
				return;
		}
		super.eSet(featureID, newValue);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	public void eUnset(int featureID) {
		switch (featureID) {
			case VariableDeclarationImpl.VARIABLE_DECLARATION_FEATURE_COUNT + 0:
				getObservedProperties().clear();
				return;
			case VariableDeclarationImpl.VARIABLE_DECLARATION_FEATURE_COUNT + 1:
				setIsCheck(IS_CHECK_EDEFAULT);
				return;
			case VariableDeclarationImpl.VARIABLE_DECLARATION_FEATURE_COUNT + 2:
				setOwnedExpression((OCLExpression)null);
				return;
		}
		super.eUnset(featureID);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	public boolean eIsSet(int featureID) {
		switch (featureID) {
			case VariableDeclarationImpl.VARIABLE_DECLARATION_FEATURE_COUNT + 0:
				return observedProperties != null && !observedProperties.isEmpty();
			case VariableDeclarationImpl.VARIABLE_DECLARATION_FEATURE_COUNT + 1:
				return isCheck != IS_CHECK_EDEFAULT;
			case VariableDeclarationImpl.VARIABLE_DECLARATION_FEATURE_COUNT + 2:
				return ownedExpression != null;
		}
		return super.eIsSet(featureID);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	public int eBaseStructuralFeatureID(int derivedFeatureID, Class<?> baseClass) {
		if (baseClass == ObservableStatement.class) {
			switch (derivedFeatureID) {
				case VariableDeclarationImpl.VARIABLE_DECLARATION_FEATURE_COUNT + 0: return NamedElementImpl.NAMED_ELEMENT_FEATURE_COUNT + 0;
				default: return -1;
			}
		}
		return super.eBaseStructuralFeatureID(derivedFeatureID, baseClass);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	public int eDerivedStructuralFeatureID(int baseFeatureID, Class<?> baseClass) {
		if (baseClass == ObservableStatement.class) {
			switch (baseFeatureID) {
				case NamedElementImpl.NAMED_ELEMENT_FEATURE_COUNT + 0: return VariableDeclarationImpl.VARIABLE_DECLARATION_FEATURE_COUNT + 0;
				default: return -1;
			}
		}
		return super.eDerivedStructuralFeatureID(baseFeatureID, baseClass);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	@SuppressWarnings("unchecked")
	public Object eInvoke(int operationID, EList<?> arguments) throws InvocationTargetException {
		switch (operationID) {
			case VariableDeclarationImpl.VARIABLE_DECLARATION_OPERATION_COUNT + 1:
				return validateCompatibleTypeForUncheckedValue((DiagnosticChain)arguments.get(0), (Map<Object, Object>)arguments.get(1));
		}
		return super.eInvoke(operationID, arguments);
	}

	/**
	 * {@inheritDoc}
	 * @generated
	 */
	@SuppressWarnings("unchecked")
	@Override
	public <R> R accept(@NonNull Visitor<R> visitor) {
		if (visitor instanceof QVTimperativeVisitor) {
			return (R) ((QVTimperativeVisitor<?>)visitor).visitDeclareStatement(this);
		}
		else {
			return super.accept(visitor);
		}
	}

} //PredicateVariableImpl