python/src/com/jetbrains/python/highlighting/PySyntaxHighlighterFactory.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.highlighting;

import com.intellij.openapi.fileTypes.SyntaxHighlighter;
import com.intellij.openapi.fileTypes.SyntaxHighlighterFactory;
import com.intellij.openapi.project.Project;
import com.intellij.openapi.vfs.VirtualFile;
import com.intellij.util.containers.FactoryMap;
import com.jetbrains.python.console.parsing.PyConsoleHighlightingLexer;
import com.jetbrains.python.lexer.PythonHighlightingLexer;
import com.jetbrains.python.psi.LanguageLevel;
import com.jetbrains.python.psi.PyUtil;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;

/**
 * @author yole
 */
public class PySyntaxHighlighterFactory extends SyntaxHighlighterFactory {
  @SuppressWarnings({"MismatchedQueryAndUpdateOfCollection"})
  private final FactoryMap<LanguageLevel, PyHighlighter> myMap = new FactoryMap<LanguageLevel, PyHighlighter>() {
    @Override
    protected PyHighlighter create(LanguageLevel key) {
      return new PyHighlighter(key);
    }
  };

  private final FactoryMap<LanguageLevel, PyHighlighter> myConsoleMap = new FactoryMap<LanguageLevel, PyHighlighter>() {
      @Override
      protected PyHighlighter create(LanguageLevel key) {
        return new PyHighlighter(key) {
          @Override
          protected PythonHighlightingLexer createHighlightingLexer(LanguageLevel languageLevel) {
            return new PyConsoleHighlightingLexer(languageLevel);
          }
        };
      }
    };

  @NotNull
  public SyntaxHighlighter getSyntaxHighlighter(@Nullable final Project project, @Nullable final VirtualFile virtualFile) {
    final LanguageLevel level = project != null && virtualFile != null ?
                                PyUtil.getLanguageLevelForVirtualFile(project, virtualFile) :
                                LanguageLevel.getDefault();
    return myMap.get(level);
  }
}