| /* |
| * |
| * 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.royale.compiler.internal.css; |
| |
| import java.util.regex.Matcher; |
| import java.util.regex.Pattern; |
| |
| import org.antlr.runtime.TokenStream; |
| import org.antlr.runtime.tree.CommonTree; |
| |
| /** |
| * Implementation for number CSS property values. The number can also have a |
| * unit string. For example: <code>12px; 12em; 12%</code> |
| */ |
| public class CSSNumberPropertyValue extends CSSPropertyValue |
| { |
| /** |
| * Match a signed real number. |
| * |
| * <pre> |
| * +100 |
| * -3.14 |
| * .25 |
| * 10.00 |
| * </pre> |
| */ |
| private static final Pattern PATTERN = Pattern.compile( |
| "[\\+\\-]?((\\d+(\\.\\d+)?)|(\\.\\d+))"); |
| |
| protected CSSNumberPropertyValue(final String numberWithUnit, |
| final CommonTree tree, |
| final TokenStream tokenStream) |
| { |
| super(tree, tokenStream, CSSModelTreeType.PROPERTY_VALUE); |
| assert numberWithUnit != null : "Number can't be null."; |
| |
| final Matcher matcher = PATTERN.matcher(numberWithUnit); |
| if (matcher.find()) |
| { |
| this.number = Float.parseFloat(matcher.group()); |
| this.unit = numberWithUnit.substring(matcher.end()); |
| } |
| else |
| { |
| this.number = null; |
| this.unit = null; |
| } |
| this.raw = numberWithUnit; |
| } |
| |
| private final String raw; |
| private final Number number; |
| private final String unit; |
| |
| /** |
| * @return The number value. |
| */ |
| public Number getNumber() |
| { |
| return number; |
| } |
| |
| /** |
| * @return Unit for the number; Or {@code null} if this number doesn't have |
| * a unit. |
| */ |
| public String getUnit() |
| { |
| return unit; |
| } |
| |
| @Override |
| public String toString() |
| { |
| return raw; |
| } |
| } |