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A packaging of the IntelliJ Community Edition groovy-psi library. This is release number 1 of trunk branch 142.

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/*
 * Copyright 2000-2014 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 org.jetbrains.plugins.groovy.findUsages;

import com.intellij.openapi.application.QueryExecutorBase;
import com.intellij.openapi.util.text.StringUtil;
import com.intellij.psi.PsiClass;
import com.intellij.psi.PsiMethod;
import com.intellij.psi.PsiReference;
import com.intellij.psi.impl.search.MethodTextOccurrenceProcessor;
import com.intellij.psi.search.SearchScope;
import com.intellij.psi.search.UsageSearchContext;
import com.intellij.psi.search.searches.MethodReferencesSearch;
import com.intellij.util.Processor;
import org.jetbrains.annotations.NotNull;

import java.util.List;

/**
 * @author Max Medvedev
 */
public class GrLiteralMethodSearcher extends QueryExecutorBase {
  @Override
  public void processQuery(@NotNull MethodReferencesSearch.SearchParameters p, @NotNull Processor consumer) {
    final PsiMethod method = p.getMethod();
    final PsiClass aClass = method.getContainingClass();
    if (aClass == null) return;

    final String name = method.getName();
    if (StringUtil.isEmpty(name)) return;

    final boolean strictSignatureSearch = p.isStrictSignatureSearch();
    final PsiMethod[] methods = strictSignatureSearch ? new PsiMethod[]{method} : aClass.findMethodsByName(name, false);

    SearchScope accessScope = GroovyScopeUtil.getEffectiveScope(methods);
    final SearchScope restrictedByAccess = GroovyScopeUtil.restrictScopeToGroovyFiles(p.getEffectiveSearchScope(), accessScope);

    final String textToSearch = findLongestWord(name);

    p.getOptimizer().searchWord(textToSearch, restrictedByAccess, UsageSearchContext.IN_STRINGS, true, method,
                                new MethodTextOccurrenceProcessor(aClass, strictSignatureSearch, methods));
  }

  @NotNull
  private static String findLongestWord(@NotNull String sequence) {
    final List words = StringUtil.getWordsIn(sequence);
    if (words.isEmpty()) return sequence;

    String longest = words.get(0);
    for (String word : words) {
      if (word.length() > longest.length()) longest = word;
    }

    return longest;
  }

  public GrLiteralMethodSearcher() {
    super(true);
  }
}