| /******************************************************************************* |
| * Copyright (c) 2011, 2018 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 |
| * E.D.Willink (CEA LIST) - Bug 425799 - validity view |
| *******************************************************************************/ |
| package org.eclipse.ocl.pivot.internal.library; |
| |
| import java.util.List; |
| |
| import org.eclipse.jdt.annotation.NonNull; |
| import org.eclipse.jdt.annotation.Nullable; |
| import org.eclipse.ocl.pivot.ExpressionInOCL; |
| import org.eclipse.ocl.pivot.OCLExpression; |
| import org.eclipse.ocl.pivot.OperationCallExp; |
| import org.eclipse.ocl.pivot.TypedElement; |
| import org.eclipse.ocl.pivot.Variable; |
| import org.eclipse.ocl.pivot.evaluation.EvaluationEnvironment; |
| import org.eclipse.ocl.pivot.evaluation.Executor; |
| import org.eclipse.ocl.pivot.evaluation.Executor.ExecutorExtension; |
| import org.eclipse.ocl.pivot.library.AbstractOperation; |
| import org.eclipse.ocl.pivot.utilities.ClassUtil; |
| import org.eclipse.ocl.pivot.utilities.PivotUtil; |
| |
| /** |
| * An instance of ConstrainedOperation supports evaluation of |
| * an operation defined by constraints. |
| */ |
| public class ConstrainedOperation extends AbstractOperation |
| { |
| protected final @NonNull ExpressionInOCL expressionInOCL; |
| |
| public ConstrainedOperation(@NonNull ExpressionInOCL expressionInOCL) { |
| this.expressionInOCL = expressionInOCL; |
| } |
| |
| /** |
| * @since 1.3 |
| */ |
| @Override |
| public @Nullable Object basicEvaluate(@NonNull Executor executor, @NonNull TypedElement caller, @Nullable Object @NonNull [] boxedSourceAndArgumentValues) { |
| PivotUtil.checkExpression(expressionInOCL); |
| EvaluationEnvironment nestedEvaluationEnvironment = ((ExecutorExtension)executor).pushEvaluationEnvironment(expressionInOCL, caller); |
| nestedEvaluationEnvironment.add(ClassUtil.nonNullModel(expressionInOCL.getOwnedContext()), boxedSourceAndArgumentValues[0]); |
| List<Variable> parameters = expressionInOCL.getOwnedParameters(); |
| if (!parameters.isEmpty()) { |
| for (int i = 0; i < parameters.size(); i++) { |
| Object value = boxedSourceAndArgumentValues[i+1]; |
| nestedEvaluationEnvironment.add(ClassUtil.nonNullModel(parameters.get(i)), value); |
| } |
| } |
| try { |
| OCLExpression bodyExpression = expressionInOCL.getOwnedBody(); |
| assert bodyExpression != null; |
| return executor.evaluate(bodyExpression); |
| } |
| finally { |
| executor.popEvaluationEnvironment(); |
| } |
| } |
| |
| /** |
| * @since 1.1 |
| */ |
| @Override |
| public @Nullable Object dispatch(@NonNull Executor executor, @NonNull OperationCallExp callExp, @Nullable Object sourceValue) { |
| assert !PivotUtil.getReferredOperation(callExp).isIsValidating(); |
| List<? extends OCLExpression> arguments = callExp.getOwnedArguments(); |
| @Nullable Object[] boxedSourceAndArgumentValues = new @Nullable Object[1+arguments.size()]; |
| boxedSourceAndArgumentValues[0]= sourceValue; |
| for (int i = 0; i < arguments.size(); i++) { |
| OCLExpression argument = arguments.get(i); |
| assert argument != null; |
| boxedSourceAndArgumentValues[1+i] = executor.evaluate(argument); |
| } |
| return evaluate(executor, callExp, boxedSourceAndArgumentValues); |
| } |
| |
| @Override |
| public @NonNull String toString() { |
| return String.valueOf(expressionInOCL.eContainer()); |
| } |
| } |