/*
* =============================================================================
*
* 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 java.lang.reflect.Method;
/**
*
* @author Daniel Fernández
*
* @since 1.1
*
*/
public abstract class EqualsNotEqualsExpression extends BinaryOperationExpression {
private static final long serialVersionUID = -8648395536336588140L;
protected static final String EQUALS_OPERATOR = "==";
protected static final String EQUALS_OPERATOR_2 = "eq";
protected static final String NOT_EQUALS_OPERATOR = "!=";
protected static final String NOT_EQUALS_OPERATOR_2 = "neq";
protected static final String NOT_EQUALS_OPERATOR_3 = "ne";
static final String[] OPERATORS = new String[] { EQUALS_OPERATOR, NOT_EQUALS_OPERATOR, EQUALS_OPERATOR_2, NOT_EQUALS_OPERATOR_2, NOT_EQUALS_OPERATOR_3 };
private static final boolean[] LENIENCIES = new boolean[] { false, false, false, false, false };
@SuppressWarnings("unchecked")
private static final Class<? extends BinaryOperationExpression>[] OPERATOR_CLASSES =
(Class<? extends BinaryOperationExpression>[]) new Class<?>[] {
EqualsExpression.class, NotEqualsExpression.class, EqualsExpression.class, NotEqualsExpression.class, NotEqualsExpression.class };
private static final Method LEFT_ALLOWED_METHOD;
private static final Method RIGHT_ALLOWED_METHOD;
static {
try {
LEFT_ALLOWED_METHOD = EqualsNotEqualsExpression.class.getDeclaredMethod("isLeftAllowed", IStandardExpression.class);
RIGHT_ALLOWED_METHOD = EqualsNotEqualsExpression.class.getDeclaredMethod("isRightAllowed", IStandardExpression.class);
} catch (final NoSuchMethodException e) {
throw new ExceptionInInitializerError(e);
}
}
protected EqualsNotEqualsExpression(final IStandardExpression left, final IStandardExpression right) {
super(left, right);
}
static boolean isRightAllowed(final IStandardExpression right) {
return true;
}
static boolean isLeftAllowed(final IStandardExpression left) {
return true;
}
protected static ExpressionParsingState composeEqualsNotEqualsExpression(
final ExpressionParsingState state, final int nodeIndex) {
return composeBinaryOperationExpression(
state, nodeIndex, OPERATORS, LENIENCIES, OPERATOR_CLASSES, LEFT_ALLOWED_METHOD, RIGHT_ALLOWED_METHOD);
}
}