com.google.gwt.dev.util.arg.ArgHandlerSourceLevel Maven / Gradle / Ivy
/*
* 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 {
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(), AUTO_SELECT};
}
@Override
public String getPurpose() {
return "Specifies Java source level (defaults to " + AUTO_SELECT + ":" +
SourceLevel.DEFAULT_SOURCE_LEVEL + ")";
}
@Override
public String getTag() {
return "-sourceLevel";
}
@Override
public String[] getTagArgs() {
return new String[]{"[" + Joiner.on(", ").skipNulls().join(AUTO_SELECT, null,
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, SourceLevel.values()) + "].");
return false;
}
options.setSourceLevel(level);
return true;
}
}