XsdRegExpInjector.java

/*
 * Copyright 2000-2016 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.source.resolve.reference.impl.providers;

import com.intellij.lang.injection.MultiHostInjector;
import com.intellij.lang.injection.MultiHostRegistrar;
import com.intellij.patterns.XmlAttributeValuePattern;
import com.intellij.patterns.XmlPatterns;
import com.intellij.psi.ElementManipulators;
import com.intellij.psi.PsiElement;
import com.intellij.psi.PsiLanguageInjectionHost;
import com.intellij.psi.xml.XmlAttributeValue;
import com.intellij.xml.util.XmlUtil;
import org.jetbrains.annotations.NotNull;

import java.util.Collections;
import java.util.List;

public class XsdRegExpInjector implements MultiHostInjector {

  private static final XmlAttributeValuePattern PATTERN =
    XmlPatterns.xmlAttributeValue("value").withSuperParent(2, XmlPatterns.xmlTag().withLocalName("pattern").withNamespace(
      XmlUtil.SCHEMA_URIS));

  @Override
  public void getLanguagesToInject(@NotNull MultiHostRegistrar registrar, @NotNull PsiElement context) {

    if (PATTERN.accepts(context)) {
      registrar.startInjecting(XsdRegExpParserDefinition.LANGUAGE).
        addPlace(null, null, (PsiLanguageInjectionHost)context, ElementManipulators.getValueTextRange(context)).
        doneInjecting();
    }
  }

  @NotNull
  @Override
  public List<? extends Class<? extends PsiElement>> elementsToInjectIn() {
    return Collections.singletonList(XmlAttributeValue.class);
  }
}