/*
* Copyright (C) 2015 Red Hat, Inc. and/or its affiliates.
*
* 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.jboss.errai.codegen.util;
import org.jboss.errai.codegen.BitwiseOperator;
import org.jboss.errai.codegen.Expression;
import org.jboss.errai.codegen.Statement;
import org.jboss.errai.codegen.builder.impl.BitwiseExpressionBuilder;
import org.jboss.errai.common.client.api.Assert;
/**
* @author Mike Brock
*/
public class Bitwise {
public static Expression<BitwiseOperator> expr(final Object lhs, final BitwiseOperator operator, final Object rhs) {
return BitwiseExpressionBuilder.create(lhs, operator, rhs);
}
public static Expression<BitwiseOperator> expr(final BitwiseOperator operator, final Object rhs) {
return BitwiseExpressionBuilder.create(operator, rhs);
}
public static Expression<BitwiseOperator> expr(final Statement lhs) {
return BitwiseExpressionBuilder.create(lhs);
}
public static Expression<BitwiseOperator> or(final Object lhs, final Object... rhs) {
return append(lhs, BitwiseOperator.Or, rhs);
}
public static Expression<BitwiseOperator> and(final Object lhs, final Object... rhs) {
return append(lhs, BitwiseOperator.And, rhs);
}
public static Expression<BitwiseOperator> xor(final Object lhs, final Object... rhs) {
return append(lhs, BitwiseOperator.Xor, rhs);
}
public static Expression<BitwiseOperator> shiftRight(final Object lhs, final Object... rhs) {
return append(lhs, BitwiseOperator.ShiftRight, rhs);
}
public static Expression<BitwiseOperator> unsignedShiftRight(final Object lhs, final Object... rhs) {
return append(lhs, BitwiseOperator.UnsignedShiftRight, rhs);
}
public static Expression<BitwiseOperator> shiftLeft(final Object lhs, final Object... rhs) {
return append(lhs, BitwiseOperator.ShiftLeft, rhs);
}
private static Expression<BitwiseOperator> append(final Object lhs,
final BitwiseOperator operator,
final Object... rhs) {
Assert.notNull("must specify a right hand side value", rhs);
if (rhs.length == 0) {
throw new AssertionError("must specifiy at least one right hand side element");
}
Expression<BitwiseOperator> expr = BitwiseExpressionBuilder.create(lhs, operator, rhs[0]);
for (int i = 1; i < rhs.length; i++) {
expr = BitwiseExpressionBuilder.createUnqualifying(expr, operator, rhs[i]);
}
return expr;
}
}