Java tutorial
/* * Copyright 2008 Google 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.google.common.css; import com.google.common.base.Preconditions; import javax.annotation.Nullable; /** * This is a wrapper for a file that will be compiled. It conveniently stores * both the file name and the file contents, so that the parser does not have * to deal with IO. * * <p>Instances of this class are immutable. * */ public final class SourceCode { private final String fileName; private final String fileContents; /** * Constructs a {@code SourceCode}. At least one of fileName and fileContents * must be non-{@code null}. * * @param fileName the name of the source code file or {@code null} if the * input does not come from a file * @param fileContents the contents of the source code file or {@code null} if * the file contents is not yet known (the file has not yet been read) */ public SourceCode(@Nullable String fileName, @Nullable String fileContents) { Preconditions.checkArgument(fileName != null || fileContents != null); this.fileName = fileName; this.fileContents = fileContents; } public String getFileName() { return fileName; } public String getFileContents() { return fileContents; } int getFileContentsLength() { return fileContents.length(); } }