| /* |
| * Copyright 2000-2009 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.openapi.vcs; |
| |
| import com.intellij.openapi.vfs.VirtualFile; |
| import com.intellij.util.NotNullFunction; |
| import com.intellij.util.containers.Convertor; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.annotations.Nullable; |
| |
| import java.util.ArrayList; |
| import java.util.Collection; |
| import java.util.List; |
| |
| public class ObjectsConvertor { |
| |
| public static final Convertor<FilePath, VirtualFile> FILEPATH_TO_VIRTUAL = new Convertor<FilePath, VirtualFile>() { |
| public VirtualFile convert(FilePath fp) { |
| return fp.getVirtualFile(); |
| } |
| }; |
| |
| public static final Convertor<VirtualFile, FilePath> VIRTUAL_FILEPATH = new Convertor<VirtualFile, FilePath>() { |
| public FilePath convert(VirtualFile vf) { |
| return new FilePathImpl(vf); |
| } |
| }; |
| |
| public static final NotNullFunction<Object, Boolean> NOT_NULL = new NotNullFunction<Object, Boolean>() { |
| @NotNull |
| public Boolean fun(final Object o) { |
| return o != null; |
| } |
| }; |
| |
| public static List<VirtualFile> fp2vf(@NotNull final Collection<FilePath> in) { |
| return convert(in, FILEPATH_TO_VIRTUAL); |
| } |
| |
| public static List<FilePath> vf2fp(@NotNull final List<VirtualFile> in) { |
| return convert(in, VIRTUAL_FILEPATH); |
| } |
| |
| public static <T,S> List<S> convert(@NotNull final Collection<T> in, final Convertor<T,S> convertor) { |
| return convert(in, convertor, null); |
| } |
| |
| public static <T,U, S extends U> List<S> convert(@NotNull final Collection<T> in, final Convertor<T,S> convertor, |
| @Nullable final NotNullFunction<U, Boolean> outFilter) { |
| final List<S> out = new ArrayList<S>(); |
| for (T t : in) { |
| final S converted = convertor.convert(t); |
| if ((outFilter != null) && (! Boolean.TRUE.equals(outFilter.fun(converted)))) continue; |
| out.add(converted); |
| } |
| return out; |
| } |
| } |