| /* |
| * Copyright 2000-2013 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.compiler.classFilesIndex.chainsSearch; |
| |
| import com.intellij.compiler.classFilesIndex.chainsSearch.context.ChainCompletionContext; |
| import com.intellij.psi.PsiMethod; |
| import com.intellij.psi.PsiParameter; |
| import com.intellij.psi.PsiPrimitiveType; |
| import com.intellij.psi.PsiType; |
| import org.jetbrains.annotations.NotNull; |
| |
| import java.util.NavigableSet; |
| import java.util.Set; |
| import java.util.TreeSet; |
| |
| /** |
| * @author Dmitry Batkovich |
| */ |
| public final class ParametersMatcher { |
| |
| private ParametersMatcher() {} |
| |
| public static MatchResult matchParameters(final MethodsChain chain, final ChainCompletionContext context) { |
| MatchResult overallResult = EMPTY; |
| for (final PsiMethod[] methods : chain.getPath()) { |
| final NavigableSet<MatchResult> matchResults = new TreeSet<MatchResult>(); |
| for (final PsiMethod method : methods) { |
| matchResults.add(matchParameters(method, context, chain.getExcludedQNames())); |
| } |
| final MatchResult best = matchResults.first(); |
| overallResult = overallResult.add(best); |
| } |
| return overallResult; |
| } |
| |
| private static MatchResult matchParameters(final PsiMethod method, final ChainCompletionContext context, final Set<String> additionalExcludedNames) { |
| int matched = 0; |
| int unMatched = 0; |
| boolean hasTarget = false; |
| for (final PsiParameter parameter : method.getParameterList().getParameters()) { |
| final PsiType type = parameter.getType(); |
| final String canonicalText = type.getCanonicalText(); |
| if (context.contains(canonicalText) || type instanceof PsiPrimitiveType) { |
| matched++; |
| } |
| else { |
| unMatched++; |
| } |
| if (context.getTarget().getClassQName().equals(canonicalText) || additionalExcludedNames.contains(canonicalText)) { |
| hasTarget = true; |
| } |
| } |
| return new MatchResult(matched, unMatched, hasTarget); |
| } |
| |
| private static final MatchResult EMPTY = new MatchResult(0, 0, false); |
| |
| public static class MatchResult implements Comparable<MatchResult> { |
| private final int myMatched; |
| private final int myUnMatched; |
| private final boolean myHasTarget; |
| |
| private MatchResult(final int matched, final int unMatched, final boolean hasTarget) { |
| myMatched = matched; |
| myUnMatched = unMatched; |
| myHasTarget = hasTarget; |
| } |
| |
| public int getMatched() { |
| return myMatched; |
| } |
| |
| public int getUnMatched() { |
| return myUnMatched; |
| } |
| |
| public boolean hasTarget() { |
| return myHasTarget; |
| } |
| |
| public MatchResult add(final MatchResult other) { |
| return new MatchResult(getMatched() + other.getMatched(), getUnMatched() + other.getUnMatched(), other.myHasTarget || myHasTarget); |
| } |
| |
| public boolean noUnmatchedAndHasMatched() { |
| return myUnMatched == 0 && myMatched != 0; |
| } |
| |
| @Override |
| public int compareTo(@NotNull final MatchResult other) { |
| final int sub = getUnMatched() - other.getUnMatched(); |
| if (sub != 0) { |
| return sub; |
| } |
| return getMatched() - other.getMatched(); |
| } |
| } |
| } |