content: /*
   * 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 io.airlift.bytecode.expression;
  
  import com.google.common.collect.ImmutableList;
  import io.airlift.bytecode.BytecodeNode;
  import io.airlift.bytecode.MethodGenerationContext;
  import io.airlift.bytecode.ParameterizedType;
  import io.airlift.bytecode.instruction.Constant;
  
  import java.util.List;
  
  import static io.airlift.bytecode.ParameterizedType.type;
  
  class ConstantBytecodeExpression
          extends BytecodeExpression
  {
      private final Constant value;
  
      public ConstantBytecodeExpression(Class<?> type, Constant value)
      {
          this(type(type), value);
      }
  
      public ConstantBytecodeExpression(ParameterizedType type, Constant value)
      {
          super(type);
          this.value = value;
      }
  
      @Override
      public Constant getBytecode(MethodGenerationContext generationContext)
      {
          return value;
      }
  
      @Override
      protected String formatOneLine()
      {
          return renderConstant(value.getValue());
      }
  
      public static String renderConstant(Object value)
      {
          if (value instanceof Long) {
              return value + "L";
          }
          if (value instanceof Float) {
              return value + "f";
          }
          if (value instanceof ParameterizedType) {
              return ((ParameterizedType) value).getSimpleName() + ".class";
          }
          // todo escape string
          if (value instanceof String) {
              return "\"" + value + "\"";
          }
          return String.valueOf(value);
      }
  
      @Override
      public List<BytecodeNode> getChildNodes()
      {
          return ImmutableList.of();
      }
  }
  