| /* |
| * Copyright 2013 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.gwt.dev.util.arg; |
| |
| import com.google.gwt.thirdparty.guava.common.base.Joiner; |
| import com.google.gwt.util.tools.ArgHandlerString; |
| |
| /** |
| * Set the Java source level compatibility. |
| */ |
| public class ArgHandlerSourceLevel extends ArgHandlerString { |
| // TODO(rluble) simplify and make it extend ArgHandlerEnum. |
| private static final String AUTO_SELECT = "auto"; |
| private final OptionSourceLevel options; |
| |
| public ArgHandlerSourceLevel(OptionSourceLevel options) { |
| this.options = options; |
| } |
| |
| @Override |
| public String[] getDefaultArgs() { |
| return new String[] {getTag(), SourceLevel.JAVA8.getStringValue()}; |
| } |
| |
| @Override |
| public String getPurpose() { |
| return "Specifies Java source level (defaults to " + SourceLevel.JAVA8.getStringValue() + ")"; |
| } |
| |
| @Override |
| public String getTag() { |
| return "-sourceLevel"; |
| } |
| |
| @Override |
| public String[] getTagArgs() { |
| return new String[]{"[" + Joiner.on(", ").skipNulls().join(AUTO_SELECT, null, |
| (Object[]) SourceLevel.values()) + "]"}; |
| } |
| |
| @Override |
| public boolean setString(String value) { |
| if (value.equals(AUTO_SELECT)) { |
| options.setSourceLevel(SourceLevel.DEFAULT_SOURCE_LEVEL); |
| return true; |
| } |
| SourceLevel level = SourceLevel.fromString(value); |
| if (level == null) { |
| System.err.println("Source level must be one of [" + |
| Joiner.on(", ").skipNulls().join(AUTO_SELECT, null, (Object[]) SourceLevel.values()) |
| + "]."); |
| return false; |
| } |
| options.setSourceLevel(level); |
| return true; |
| } |
| } |