001/*
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 *
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017package org.apache.wicket.util.parse.metapattern.parsers;
018
019import org.apache.wicket.util.parse.metapattern.Group;
020import org.apache.wicket.util.parse.metapattern.IntegerGroup;
021import org.apache.wicket.util.parse.metapattern.MetaPattern;
022
023/**
024 * Parses integer variable assignments, such as "x = 9" or "x=9".
025 * 
026 * @author Jonathan Locke
027 */
028public final class IntegerVariableAssignmentParser extends MetaPatternParser
029{
030        /** Parse "variable = <number>". */
031        private static final Group variable = new Group(MetaPattern.VARIABLE_NAME);
032
033        /** Group value. */
034        private static final IntegerGroup value = new IntegerGroup();
035
036        /** Meta pattern. */
037        private static final MetaPattern pattern = new MetaPattern(variable,
038                MetaPattern.OPTIONAL_WHITESPACE, MetaPattern.EQUALS, MetaPattern.OPTIONAL_WHITESPACE, value);
039
040        /**
041         * Construct.
042         * 
043         * @param input
044         *            to parse
045         */
046        public IntegerVariableAssignmentParser(final CharSequence input)
047        {
048                super(pattern, input);
049        }
050
051        /**
052         * Gets the variable part (eg the 'x' from 'x = 9').
053         * 
054         * @return the variable part
055         */
056        public String getVariable()
057        {
058                return variable.get(matcher());
059        }
060
061        /**
062         * Gets the int part (eg the '9' from 'x = 9').
063         * 
064         * @return the int part.
065         */
066        public int getIntValue()
067        {
068                return value.getInt(matcher());
069        }
070
071        /**
072         * Gets the int part as a long.
073         * 
074         * @return the int part as a long
075         */
076        public long getLongValue()
077        {
078                return value.getLong(matcher());
079        }
080}