/*
* 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 com.facebook.presto.bytecode.expression;
import com.facebook.presto.bytecode.BytecodeBlock;
import com.facebook.presto.bytecode.BytecodeNode;
import com.facebook.presto.bytecode.MethodGenerationContext;
import com.facebook.presto.bytecode.ParameterizedType;
import com.google.common.base.Joiner;
import com.google.common.collect.ImmutableList;
import java.lang.reflect.Method;
import java.util.List;
import static com.google.common.collect.Iterables.transform;
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("(").append(Joiner.on(", ").join(transform(bootstrapArgs, ConstantBytecodeExpression::renderConstant))).append(")");
}
builder.append("]=>");
builder.append(methodName).append("(").append(Joiner.on(", ").join(parameters)).append(")");
return builder.toString();
}
}