| /******************************************************************************* |
| * Copyright (c) 2005, 2006 IBM Corporation and others. |
| * 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: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.jdt.internal.corext.refactoring.structure.constraints; |
| |
| import org.eclipse.core.runtime.Assert; |
| |
| import org.eclipse.jdt.internal.corext.refactoring.typeconstraints2.ConstraintVariable2; |
| import org.eclipse.jdt.internal.corext.refactoring.typeconstraints2.ITypeConstraint2; |
| |
| /** |
| * Type constraint which models conditional expression type constraints. |
| */ |
| public final class ConditionalTypeConstraint implements ITypeConstraint2 { |
| |
| /** The else type variable */ |
| private final ConstraintVariable2 fElseVariable; |
| |
| /** The expression type variable */ |
| private final ConstraintVariable2 fExpressionVariable; |
| |
| /** The then type variable */ |
| private final ConstraintVariable2 fThenVariable; |
| |
| /** |
| * Creates a new conditional type constraint. |
| * |
| * @param expressionVariable the expression type constraint variable |
| * @param thenVariable the then type constraint variable |
| * @param elseVariable the else type constraint variable |
| */ |
| public ConditionalTypeConstraint(final ConstraintVariable2 expressionVariable, final ConstraintVariable2 thenVariable, final ConstraintVariable2 elseVariable) { |
| Assert.isNotNull(expressionVariable); |
| Assert.isNotNull(thenVariable); |
| Assert.isNotNull(elseVariable); |
| fExpressionVariable= expressionVariable; |
| fThenVariable= thenVariable; |
| fElseVariable= elseVariable; |
| } |
| |
| /* |
| * @see java.lang.Object#equals(java.lang.Object) |
| */ |
| public final boolean equals(final Object object) { |
| if (object.getClass() != ConditionalTypeConstraint.class) |
| return false; |
| final ITypeConstraint2 other= (ITypeConstraint2) object; |
| return getLeft() == other.getLeft() && getRight() == other.getRight(); |
| } |
| |
| /** |
| * Returns the expression type constraint variable. |
| * |
| * @return the expression type constraint variable |
| */ |
| public final ConstraintVariable2 getExpression() { |
| return fExpressionVariable; |
| } |
| |
| /* |
| * @see org.eclipse.jdt.internal.corext.refactoring.typeconstraints2.ITypeConstraint2#getLeft() |
| */ |
| public final ConstraintVariable2 getLeft() { |
| return fThenVariable; |
| } |
| |
| /* |
| * @see org.eclipse.jdt.internal.corext.refactoring.typeconstraints2.ITypeConstraint2#getRight() |
| */ |
| public final ConstraintVariable2 getRight() { |
| return fElseVariable; |
| } |
| |
| /* |
| * @see java.lang.Object#hashCode() |
| */ |
| public final int hashCode() { |
| return fThenVariable.hashCode() ^ 33 * fElseVariable.hashCode(); |
| } |
| |
| /* |
| * @see java.lang.Object#toString() |
| */ |
| public final String toString() { |
| return fThenVariable.toString() + " <?= " + fElseVariable.toString(); //$NON-NLS-1$ |
| } |
| } |