com.facebook.buck.rules.FakeCellPathResolver.java Source code

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Here is the source code for com.facebook.buck.rules.FakeCellPathResolver.java

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/*
 * Copyright 2016-present Facebook, Inc.
 *
 * 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.facebook.buck.rules;

import com.facebook.buck.io.ProjectFilesystem;
import com.google.common.collect.ImmutableMap;

import java.nio.file.Path;
import java.util.Optional;

import javax.annotation.Nullable;

public final class FakeCellPathResolver implements CellPathResolver {
    @Nullable
    private final ProjectFilesystem projectFilesystem;
    private final ImmutableMap<String, Path> cellPaths;

    public FakeCellPathResolver(ProjectFilesystem projectFilesystem, ImmutableMap<String, Path> cellPaths) {
        this.projectFilesystem = projectFilesystem;
        this.cellPaths = cellPaths;
    }

    public FakeCellPathResolver(ImmutableMap<String, Path> cellPaths) {
        this(null, cellPaths);
    }

    public FakeCellPathResolver(ProjectFilesystem projectFilesystem) {
        this(projectFilesystem, ImmutableMap.of());
    }

    @Override
    public Path getCellPath(Optional<String> cellName) {
        if (cellName.isPresent()) {
            Path result = cellPaths.get(cellName.get());
            if (result == null) {
                throw new IllegalArgumentException("Cell not found: " + cellName);
            }
            return result;
        } else if (projectFilesystem != null) {
            return projectFilesystem.getRootPath();
        } else {
            throw new IllegalArgumentException("Root cell not defined.");
        }
    }

    @Override
    public ImmutableMap<String, Path> getCellPaths() {
        return cellPaths;
    }
}