code: /*
   * Copyright (c) 2019 the Eclipse Milo Authors
   *
   * This program and the accompanying materials are made
   * available under the terms of the Eclipse Public License 2.0
   * which is available at https://www.eclipse.org/legal/epl-2.0/
   *
   * SPDX-License-Identifier: EPL-2.0
   */
  
  package org.eclipse.milo.opcua.sdk.server.events.conversions;
  
  import org.eclipse.milo.opcua.stack.core.BuiltinDataType;
  import org.eclipse.milo.opcua.stack.core.types.builtin.unsigned.UByte;
  import org.eclipse.milo.opcua.stack.core.types.builtin.unsigned.UInteger;
  import org.eclipse.milo.opcua.stack.core.types.builtin.unsigned.ULong;
  import org.eclipse.milo.opcua.stack.core.types.builtin.unsigned.UShort;
  import org.jetbrains.annotations.NotNull;
  import org.jetbrains.annotations.Nullable;
  
  import static org.eclipse.milo.opcua.stack.core.types.builtin.unsigned.Unsigned.ubyte;
  import static org.eclipse.milo.opcua.stack.core.types.builtin.unsigned.Unsigned.uint;
  import static org.eclipse.milo.opcua.stack.core.types.builtin.unsigned.Unsigned.ulong;
  import static org.eclipse.milo.opcua.stack.core.types.builtin.unsigned.Unsigned.ushort;
  
  final class BooleanConversions {
  
      private BooleanConversions() {}
  
      @NotNull
      static UByte booleanToByte(@NotNull Boolean b) {
          return ubyte(b ? 1 : 0);
      }
  
      @NotNull
      static Double booleanToDouble(@NotNull Boolean b) {
          return b ? 1.0 : 0.0;
      }
  
      @NotNull
      static Float booleanToFloat(@NotNull Boolean b) {
          return b ? 1.0f : 0.0f;
      }
  
      @NotNull
      static Short booleanToInt16(@NotNull Boolean b) {
          return b ? (short) 1 : (short) 0;
      }
  
      @NotNull
      static Integer booleanToInt32(@NotNull Boolean b) {
          return b ? 1 : 0;
      }
  
      @NotNull
      static Long booleanToInt64(@NotNull Boolean b) {
          return b ? 1L : 0L;
      }
  
      @NotNull
      static Byte booleanToSByte(@NotNull Boolean b) {
          return b ? (byte) 1 : (byte) 0;
      }
  
      @NotNull
      static String booleanToString(@NotNull Boolean b) {
          return b ? "1" : "0";
      }
  
      @NotNull
      static UShort booleanToUInt16(@NotNull Boolean b) {
          return b ? ushort(1) : ushort(0);
      }
  
      @NotNull
      static UInteger booleanToUInt32(@NotNull Boolean b) {
          return b ? uint(1) : uint(0);
      }
  
      @NotNull
      static ULong booleanToUInt64(@NotNull Boolean b) {
          return b ? ulong(1) : ulong(0);
      }
  
      @Nullable
      static Object convert(@NotNull Object o, BuiltinDataType targetType, boolean implicit) {
          if (o instanceof Boolean) {
              Boolean b = (Boolean) o;
  
              return implicit ?
                  implicitConversion(b, targetType) :
                  explicitConversion(b, targetType);
          } else {
              return null;
          }
      }
  
      @Nullable
      static Object explicitConversion(@NotNull Boolean b, BuiltinDataType targetType) {
          //@formatter:off
          switch (targetType) {
              case String:    return booleanToString(b);
              default:        return implicitConversion(b, targetType);
          }
          //@formatter:on
      }
  
      @Nullable
      static Object implicitConversion(@NotNull Boolean b, BuiltinDataType targetType) {
          //@formatter:off
          switch (targetType) {
              case Byte:      return booleanToByte(b);
              case Double:    return booleanToDouble(b);
              case Float:     return booleanToFloat(b);
              case Int16:     return booleanToInt16(b);
              case Int32:     return booleanToInt32(b);
              case Int64:     return booleanToInt64(b);
              case SByte:     return booleanToSByte(b);
              case UInt16:    return booleanToUInt16(b);
              case UInt32:    return booleanToUInt32(b);
              case UInt64:    return booleanToUInt64(b);
              default:        return null;
          }
          //@formatter:on
      }
  
  }
  