/*
 * 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.types;

import com.jetbrains.python.PyNames;
import org.jetbrains.annotations.NotNull;

import java.util.ArrayList;
import java.util.Collection;
import java.util.List;

/**
 * @author vlan
 */
public class PyDynamicallyEvaluatedType extends PyUnionType {
  private PyDynamicallyEvaluatedType(@NotNull Collection<PyType> members) {
    super(members);
  }

  @NotNull
  public static PyDynamicallyEvaluatedType create(@NotNull PyType type) {
    final List<PyType> members = new ArrayList<PyType>();
    if (type instanceof PyUnionType) {
      final PyUnionType unionType = (PyUnionType)type;
      members.addAll(unionType.getMembers());
      if (!unionType.isWeak()) {
        members.add(null);
      }
    }
    else {
      members.add(type);
      members.add(null);
    }
    return new PyDynamicallyEvaluatedType(members);
  }

  @Override
  public String getName() {
    PyType res = excludeNull(TypeEvalContext.codeInsightFallback());
    return res != null ? res.getName() : PyNames.UNKNOWN_TYPE;
  }
}