156ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson/* 256ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson * Copyright (C) 2010 Google Inc. 356ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson * 456ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson * Licensed under the Apache License, Version 2.0 (the "License"); 556ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson * you may not use this file except in compliance with the License. 656ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson * You may obtain a copy of the License at 756ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson * 856ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson * http://www.apache.org/licenses/LICENSE-2.0 956ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson * 1056ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson * Unless required by applicable law or agreed to in writing, software 1156ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson * distributed under the License is distributed on an "AS IS" BASIS, 1256ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 1356ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson * See the License for the specific language governing permissions and 1456ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson * limitations under the License. 1556ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson */ 1656ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson 1756ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodsonpackage com.google.clearsilver.jsilver.values; 1856ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson 1956ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodsonimport com.google.clearsilver.jsilver.autoescape.EscapeMode; 2056ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodsonimport com.google.clearsilver.jsilver.data.TypeConverter; 2156ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson 2256ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson/** 2356ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson * Base class for values of variant types (i.e. those that can be treated as different types at 2456ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson * runtime - e.g. "33"). 2556ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson * 2656ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson * @see Value 2756ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson */ 2856ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodsonabstract class VariantValue extends Value { 2956ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson 3056ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson private static final String EMPTY = ""; 3156ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson 3256ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson VariantValue(EscapeMode escapeMode, boolean partiallyEscaped) { 3356ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson super(escapeMode, partiallyEscaped); 3456ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson } 3556ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson 3656ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson protected abstract String value(); 3756ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson 3856ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson @Override 3956ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson public boolean asBoolean() { 4056ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson return TypeConverter.asBoolean(value()); 4156ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson } 4256ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson 4356ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson @Override 4456ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson public String asString() { 4556ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson String value = value(); 4656ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson return value == null ? EMPTY : value; 4756ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson } 4856ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson 4956ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson @Override 5056ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson public int asNumber() { 5156ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson // TODO: Cache the result for constant values (or just get rid of this class) 5256ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson return TypeConverter.asNumber(value()); 5356ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson } 5456ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson 5556ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson @Override 5656ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson public boolean isEmpty() { 5756ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson return asString().isEmpty(); 5856ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson } 5956ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson 6056ed4167b942ec265f9cee70ac4d71d10b3835ceBen Dodson} 61