platform/lang-impl/src/com/intellij/lang/pratt/PrattRegistry.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.lang.pratt;

import com.intellij.openapi.util.Trinity;
import com.intellij.psi.tree.IElementType;
import com.intellij.util.containers.MultiMap;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;

import java.util.Collection;

/**
 * @author peter
 */
public class PrattRegistry {
  private final MultiMap<IElementType, Trinity<Integer, PathPattern, TokenParser>> myMap = new MultiMap<IElementType, Trinity<Integer, PathPattern, TokenParser>>();

  public void registerParser(@NotNull final IElementType type, final int priority, final TokenParser parser) {
    registerParser(type, priority, PathPattern.path(), parser);
  }

  public void registerParser(@NotNull final IElementType type, final int priority, final PathPattern pattern, final TokenParser parser) {
    myMap.putValue(type, new Trinity<Integer, PathPattern, TokenParser>(priority, pattern, parser));
  }

  @NotNull
  public Collection<Trinity<Integer, PathPattern, TokenParser>> getParsers(@Nullable final IElementType type) {
    return myMap.get(type);
  }
}