python/src/com/jetbrains/python/psi/search/PyInitReferenceSearchExecutor.java

/*
 * 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.jetbrains.python.psi.search;

import com.intellij.openapi.application.AccessToken;
import com.intellij.openapi.application.ApplicationManager;
import com.intellij.openapi.application.QueryExecutorBase;
import com.intellij.psi.PsiElement;
import com.intellij.psi.PsiReference;
import com.intellij.psi.search.GlobalSearchScope;
import com.intellij.psi.search.SearchScope;
import com.intellij.psi.search.UsageSearchContext;
import com.intellij.psi.search.searches.ReferencesSearch;
import com.intellij.util.Processor;
import com.jetbrains.python.PyNames;
import com.jetbrains.python.PythonFileType;
import com.jetbrains.python.psi.PyClass;
import com.jetbrains.python.psi.PyFunction;
import org.jetbrains.annotations.NotNull;

/**
 * @author yole
 */
public class PyInitReferenceSearchExecutor extends QueryExecutorBase<PsiReference, ReferencesSearch.SearchParameters> {
  public void processQuery(@NotNull ReferencesSearch.SearchParameters queryParameters, @NotNull final Processor<PsiReference> consumer) {
    PsiElement element = queryParameters.getElementToSearch();
    if (!(element instanceof PyFunction)) {
      return;
    }

    final AccessToken accessToken = ApplicationManager.getApplication().acquireReadActionLock();
    String className;
    SearchScope searchScope;
    PyFunction function;
    try {
      function = (PyFunction)element;
      if (!PyNames.INIT.equals(function.getName())) {
        return;
      }
      final PyClass pyClass = function.getContainingClass();
      if (pyClass == null) {
        return;
      }
      className = pyClass.getName();
      if (className == null) {
        return;
      }

      searchScope = queryParameters.getEffectiveSearchScope();
      if (searchScope instanceof GlobalSearchScope) {
        searchScope = GlobalSearchScope.getScopeRestrictedByFileTypes((GlobalSearchScope)searchScope, PythonFileType.INSTANCE);
      }
    }
    finally {
      accessToken.finish();
    }


    queryParameters.getOptimizer().searchWord(className, searchScope, UsageSearchContext.IN_CODE, true, function);
  }
}