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.base.Joiner;
  import com.google.common.collect.ImmutableList;
  import io.airlift.bytecode.BytecodeBlock;
  import io.airlift.bytecode.BytecodeNode;
  import io.airlift.bytecode.MethodGenerationContext;
  import io.airlift.bytecode.ParameterizedType;
  
  import java.lang.reflect.Method;
  import java.util.List;
  import java.util.stream.Collectors;
  
  import static java.util.Objects.requireNonNull;
  
  class InvokeDynamicBytecodeExpression
          extends BytecodeExpression
  {
      private final Method bootstrapMethod;
      private final List<Object> bootstrapArgs;
      private final String methodName;
      private final ParameterizedType returnType;
      private final List<BytecodeExpression> parameters;
      private final List<ParameterizedType> parameterTypes;
  
      InvokeDynamicBytecodeExpression(
              Method bootstrapMethod,
              Iterable<?> bootstrapArgs,
              String methodName,
              ParameterizedType returnType,
              Iterable<? extends BytecodeExpression> parameters,
              Iterable<ParameterizedType> parameterTypes)
      {
          super(returnType);
          this.bootstrapMethod = requireNonNull(bootstrapMethod, "bootstrapMethod is null");
          this.bootstrapArgs = ImmutableList.copyOf(requireNonNull(bootstrapArgs, "bootstrapArgs is null"));
          this.methodName = requireNonNull(methodName, "methodName is null");
          this.returnType = requireNonNull(returnType, "returnType is null");
          this.parameters = ImmutableList.copyOf(requireNonNull(parameters, "parameters is null"));
          this.parameterTypes = ImmutableList.copyOf(requireNonNull(parameterTypes, "parameterTypes is null"));
      }
  
      @Override
      public BytecodeNode getBytecode(MethodGenerationContext generationContext)
      {
          BytecodeBlock block = new BytecodeBlock();
          for (BytecodeExpression parameter : parameters) {
              block.append(parameter);
          }
          return block.invokeDynamic(methodName, returnType, parameterTypes, bootstrapMethod, bootstrapArgs);
      }
  
      @Override
      public List<BytecodeNode> getChildNodes()
      {
          return ImmutableList.of();
      }
  
      @Override
      protected String formatOneLine()
      {
          StringBuilder builder = new StringBuilder();
          builder.append("[").append(bootstrapMethod.getName());
          if (!bootstrapArgs.isEmpty()) {
              builder.append(bootstrapArgs.stream().map(ConstantBytecodeExpression::renderConstant).collect(Collectors.joining(", ", "(", ")")));
          }
          builder.append("]=>");
  
          builder.append(methodName).append("(").append(Joiner.on(", ").join(parameters)).append(")");
  
          return builder.toString();
      }
  }
  