/*
* =============================================================================
*
* Copyright (c) 2011-2016, The THYMELEAF team (http://www.thymeleaf.org)
*
* 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 org.thymeleaf.standard.expression;
import org.thymeleaf.context.IExpressionContext;
import org.thymeleaf.exceptions.TemplateProcessingException;
/**
* <p>
* Base abstract class for simple expressions (Thymeleaf Standard Expressions)
* </p>
* <p>
* Note a class with this name existed since 1.1, but it was completely reimplemented
* in Thymeleaf 3.0
* </p>
*
* @author Daniel Fernández
*
* @since 3.0.0
*
*/
public abstract class SimpleExpression extends Expression {
private static final long serialVersionUID = 9145380484247069725L;
static final char EXPRESSION_START_CHAR = '{';
static final char EXPRESSION_END_CHAR = '}';
protected SimpleExpression() {
super();
}
static Object executeSimple(
final IExpressionContext context, final SimpleExpression expression,
final IStandardVariableExpressionEvaluator expressionEvaluator, final StandardExpressionExecutionContext expContext) {
if (expression instanceof VariableExpression) {
return VariableExpression.executeVariableExpression(context, (VariableExpression)expression, expressionEvaluator, expContext);
}
if (expression instanceof MessageExpression) {
return MessageExpression.executeMessageExpression(context, (MessageExpression)expression, expContext);
}
if (expression instanceof TextLiteralExpression) {
return TextLiteralExpression.executeTextLiteralExpression(context, (TextLiteralExpression)expression, expContext);
}
if (expression instanceof NumberTokenExpression) {
return NumberTokenExpression.executeNumberTokenExpression(context, (NumberTokenExpression) expression, expContext);
}
if (expression instanceof BooleanTokenExpression) {
return BooleanTokenExpression.executeBooleanTokenExpression(context, (BooleanTokenExpression) expression, expContext);
}
if (expression instanceof NullTokenExpression) {
return NullTokenExpression.executeNullTokenExpression(context, (NullTokenExpression) expression, expContext);
}
if (expression instanceof LinkExpression) {
return LinkExpression.executeLinkExpression(context, (LinkExpression)expression, expContext);
}
if (expression instanceof FragmentExpression) {
return FragmentExpression.executeFragmentExpression(context, (FragmentExpression)expression, expContext);
}
if (expression instanceof SelectionVariableExpression) {
return SelectionVariableExpression.executeSelectionVariableExpression(context, (SelectionVariableExpression)expression, expressionEvaluator, expContext);
}
if (expression instanceof NoOpTokenExpression) {
return NoOpTokenExpression.executeNoOpTokenExpression(context, (NoOpTokenExpression) expression, expContext);
}
if (expression instanceof GenericTokenExpression) {
return GenericTokenExpression.executeGenericTokenExpression(context, (GenericTokenExpression) expression, expContext);
}
throw new TemplateProcessingException("Unrecognized simple expression: " + expression.getClass().getName());
}
}