| /* |
| * Copyright 2000-2009 JetBrains s.r.o. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package com.intellij.refactoring.typeCook.deductive.builder; |
| |
| import com.intellij.openapi.diagnostic.Logger; |
| import com.intellij.psi.PsiType; |
| import com.intellij.refactoring.typeCook.deductive.resolver.Binding; |
| |
| /** |
| * @author db |
| */ |
| public abstract class Constraint { |
| private static final Logger LOG = Logger.getInstance("#com.intellij.refactoring.typeCook.deductive.builder.Constraint"); |
| |
| PsiType myLeft; |
| PsiType myRight; |
| |
| public Constraint(PsiType left, PsiType right) { |
| LOG.assertTrue(left != null, "<null> left type"); |
| LOG.assertTrue(right != null, "<null> right type"); |
| |
| myLeft = left; |
| myRight = right; |
| } |
| |
| public PsiType getRight() { |
| return myRight; |
| } |
| |
| public PsiType getLeft() { |
| return myLeft; |
| } |
| |
| abstract String relationString(); |
| |
| abstract int relationType(); |
| |
| public String toString() { |
| return myLeft.getCanonicalText() + " " + relationString() + " " + myRight.getCanonicalText(); |
| } |
| |
| public boolean equals(Object o) { |
| if (this == o) return true; |
| if (!(o instanceof Constraint)) return false; |
| |
| final Constraint constraint = (Constraint)o; |
| |
| if (myLeft != null ? !myLeft.equals(constraint.myLeft) : constraint.myLeft != null) return false; |
| if (myRight != null ? !myRight.equals(constraint.myRight) : constraint.myRight != null) return false; |
| |
| return true; |
| } |
| |
| public int hashCode() { |
| int result; |
| result = (myLeft != null ? myLeft.hashCode() : 0); |
| result = 29 * result + (myRight != null ? myRight.hashCode() : 0); |
| return result + relationType(); |
| } |
| |
| public abstract Constraint apply(final Binding b); |
| } |