org.apache.wicket.util.parse.metapattern.FloatingPointGroup Maven / Gradle / Ivy
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.apache.wicket.util.parse.metapattern;
import java.util.regex.Matcher;
/**
* A Group that captures floating point values (doubles and floats).
*
* @author Jonathan Locke
*/
public final class FloatingPointGroup extends Group
{
private static final long serialVersionUID = 1L;
/**
* Constructs an FloatingPointGroup that parses Strings that match the FLOATING_POINT_NUMBER
* pattern.
*
* @see MetaPattern#FLOATING_POINT_NUMBER
*/
public FloatingPointGroup()
{
super(FLOATING_POINT_NUMBER);
}
/**
* @param matcher
* The matcher
* @return The value
*/
public float getFloat(final Matcher matcher)
{
return getFloat(matcher, -1);
}
/**
* Gets float by parsing the String matched by this capturing group.
*
* @param matcher
* The matcher
* @param defaultValue
* The default value to use if this group is omitted because it is optional
* @return The parsed value
*/
public float getFloat(final Matcher matcher, final float defaultValue)
{
final String value = get(matcher);
return value == null ? defaultValue : Float.parseFloat(value);
}
/**
* @param matcher
* The matcher
* @return The value
*/
public double getDouble(final Matcher matcher)
{
return getDouble(matcher, -1);
}
/**
* Gets double by parsing the String matched by this capturing group.
*
* @param matcher
* The matcher
* @param defaultValue
* The default value to use if this group is omitted because it is optional
* @return The parsed value
*/
public double getDouble(final Matcher matcher, final double defaultValue)
{
final String value = get(matcher);
return value == null ? defaultValue : Double.parseDouble(value);
}
}