/*
* 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.sql.gen;
import com.facebook.presto.bytecode.BytecodeNode;
import com.facebook.presto.metadata.Signature;
import com.facebook.presto.spi.type.Type;
import com.facebook.presto.sql.relational.RowExpression;
import com.google.common.collect.ImmutableList;
import java.util.List;
public class CastCodeGenerator
implements BytecodeGenerator
{
@Override
public BytecodeNode generateExpression(Signature signature, BytecodeGeneratorContext generatorContext, Type returnType, List<RowExpression> arguments)
{
RowExpression argument = arguments.get(0);
Signature function = generatorContext
.getRegistry()
.getCoercion(argument.getType(), returnType);
return generatorContext.generateCall(function.getName(), generatorContext.getRegistry().getScalarFunctionImplementation(function), ImmutableList.of(generatorContext.generate(argument)));
}
}