JavaFileSystem.java

/*
 * Anarres C Preprocessor
 * Copyright (c) 2007-2008, Shevek
 *
 * 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 org.anarres.cpp;

import java.io.File;
import java.io.IOException;

/**
 * A virtual filesystem implementation using java.io.
 */
public class JavaFileSystem implements VirtualFileSystem {

    @Override
    public VirtualFile getFile(String path) {
        return new JavaFile(path);
    }

    @Override
    public VirtualFile getFile(String dir, String name) {
        return new JavaFile(dir, name);
    }

    private class JavaFile extends File implements VirtualFile {

        public JavaFile(String path) {
            super(path);
        }

        public JavaFile(String dir, String name) {
            super(dir, name);
        }

        /* private */
        public JavaFile(File dir, String name) {
            super(dir, name);
        }

        /*
         @Override
         public String getPath() {
         return getCanonicalPath();
         }
         */
        @Override
        public JavaFile getParentFile() {
            String parent = getParent();
            if (parent != null)
                return new JavaFile(parent);
            File absolute = getAbsoluteFile();
            parent = absolute.getParent();
            /*
             if (parent == null)
             return null;
             */
            return new JavaFile(parent);
        }

        @Override
        public JavaFile getChildFile(String name) {
            return new JavaFile(this, name);
        }

        @Override
        public Source getSource() throws IOException {
            return new FileLexerSource(this);
        }

    }

}