/*
* 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.Block;
import com.facebook.presto.byteCode.ByteCodeNode;
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.facebook.presto.byteCode.expression.ConstantByteCodeExpression.constantRenderer;
import static com.google.common.base.Preconditions.checkNotNull;
import static com.google.common.collect.Iterables.transform;
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 = checkNotNull(bootstrapMethod, "bootstrapMethod is null");
this.bootstrapArgs = ImmutableList.copyOf(checkNotNull(bootstrapArgs, "bootstrapArgs is null"));
this.methodName = checkNotNull(methodName, "methodName is null");
this.returnType = checkNotNull(returnType, "returnType is null");
this.parameters = ImmutableList.copyOf(checkNotNull(parameters, "parameters is null"));
this.parameterTypes = ImmutableList.copyOf(checkNotNull(parameterTypes, "parameterTypes is null"));
}
@Override
public ByteCodeNode getByteCode()
{
Block block = new Block(null);
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, constantRenderer()))).append(")");
}
builder.append("]=>");
builder.append(methodName).append("(").append(Joiner.on(", ").join(parameters)).append(")");
return builder.toString();
}
}