/*
* 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 javax.annotation.Nullable;
import java.util.List;
import static com.google.common.base.Preconditions.checkArgument;
import static com.google.common.base.Preconditions.checkNotNull;
class InvokeByteCodeExpression
extends ByteCodeExpression
{
public static InvokeByteCodeExpression createInvoke(
ByteCodeExpression instance,
String methodName,
ParameterizedType returnType,
Iterable<ParameterizedType> parameterTypes,
Iterable<? extends ByteCodeExpression> parameters)
{
return new InvokeByteCodeExpression(
checkNotNull(instance, "instance is null"),
instance.getType(),
checkNotNull(methodName, "methodName is null"),
checkNotNull(returnType, "returnType is null"),
checkNotNull(parameterTypes, "parameterTypes is null"),
checkNotNull(parameters, "parameters is null"));
}
@Nullable
private final ByteCodeExpression instance;
private final ParameterizedType methodTargetType;
private final String methodName;
private final ParameterizedType returnType;
private final List<ByteCodeExpression> parameters;
private final ImmutableList<ParameterizedType> parameterTypes;
public InvokeByteCodeExpression(
@Nullable ByteCodeExpression instance,
ParameterizedType methodTargetType,
String methodName,
ParameterizedType returnType,
Iterable<ParameterizedType> parameterTypes,
Iterable<? extends ByteCodeExpression> parameters)
{
super(checkNotNull(returnType, "returnType is null"));
checkArgument(instance == null || !instance.getType().isPrimitive(), "Type %s does not have methods", getType());
this.instance = instance;
this.methodTargetType = checkNotNull(methodTargetType, "methodTargetType is null");
this.methodName = checkNotNull(methodName, "methodName is null");
this.returnType = returnType;
this.parameterTypes = ImmutableList.copyOf(checkNotNull(parameterTypes, "parameterTypes is null"));
this.parameters = ImmutableList.copyOf(checkNotNull(parameters, "parameters is null"));
}
@Override
public ByteCodeNode getByteCode()
{
Block block = new Block(null);
if (instance != null) {
block.append(instance);
}
for (ByteCodeExpression parameter : parameters) {
block.append(parameter);
}
if (instance == null) {
return block.invokeStatic(methodTargetType, methodName, returnType, parameterTypes);
}
else if (instance.getType().isInterface()) {
return block.invokeInterface(methodTargetType, methodName, returnType, parameterTypes);
}
else {
return block.invokeVirtual(methodTargetType, methodName, returnType, parameterTypes);
}
}
@Override
protected String formatOneLine()
{
if (instance == null) {
return methodTargetType.getSimpleName() + "." + methodName + "(" + Joiner.on(", ").join(parameters) + ")";
}
return instance + "." + methodName + "(" + Joiner.on(", ").join(parameters) + ")";
}
@Override
public List<ByteCodeNode> getChildNodes()
{
ImmutableList.Builder<ByteCodeNode> children = ImmutableList.builder();
if (instance != null) {
children.add(instance);
}
children.addAll(parameters);
return children.build();
}
}