java/java-impl/src/com/intellij/psi/impl/JavaRegExpHost.java

/*
 * Copyright 2000-2012 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.psi.impl;

import com.intellij.openapi.module.Module;
import com.intellij.openapi.module.ModuleUtilCore;
import com.intellij.openapi.projectRoots.JavaSdk;
import com.intellij.openapi.projectRoots.JavaSdkVersion;
import com.intellij.openapi.projectRoots.Sdk;
import com.intellij.openapi.roots.ModuleRootManager;
import org.intellij.lang.regexp.DefaultRegExpPropertiesProvider;
import org.intellij.lang.regexp.RegExpLanguageHost;
import org.intellij.lang.regexp.psi.RegExpGroup;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;

/**
 * @author yole
 */
public class JavaRegExpHost implements RegExpLanguageHost {

  private final DefaultRegExpPropertiesProvider myPropertiesProvider;

  public JavaRegExpHost() {
    myPropertiesProvider = DefaultRegExpPropertiesProvider.getInstance();
  }

  @Override
  public boolean characterNeedsEscaping(char c) {
    return c == ']' || c == '}';
  }

  @Override
  public boolean supportsPerl5EmbeddedComments() {
    return false;
  }

  @Override
  public boolean supportsPossessiveQuantifiers() {
    return true;
  }

  @Override
  public boolean supportsPythonConditionalRefs() {
    return false;
  }

  @Override
  public boolean supportsNamedGroupSyntax(RegExpGroup group) {
    if (group.isRubyNamedGroup()) {
      final Module module = ModuleUtilCore.findModuleForPsiElement(group);
      if (module != null) {
        final Sdk sdk = ModuleRootManager.getInstance(module).getSdk();
        if (sdk != null && sdk.getSdkType() instanceof JavaSdk) {
          final JavaSdkVersion version = JavaSdk.getInstance().getVersion(sdk);
          return version != null && version.isAtLeast(JavaSdkVersion.JDK_1_7);
        }
      }
    }
    return false;
  }

  @Override
  public boolean isValidCategory(@NotNull String category) {
    return myPropertiesProvider.isValidCategory(category);
  }

  @NotNull
  @Override
  public String[][] getAllKnownProperties() {
    return myPropertiesProvider.getAllKnownProperties();
  }

  @Nullable
  @Override
  public String getPropertyDescription(@Nullable String name) {
    return myPropertiesProvider.getPropertyDescription(name);
  }

  @NotNull
  @Override
  public String[][] getKnownCharacterClasses() {
    return myPropertiesProvider.getKnownCharacterClasses();
  }
}