/*
* Licensed to Elasticsearch under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch licenses this file to you 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 org.elasticsearch.painless.node;
import org.elasticsearch.painless.Definition;
import org.elasticsearch.painless.Definition.Method;
import org.elasticsearch.painless.Definition.Struct;
import org.elasticsearch.painless.Definition.Type;
import org.elasticsearch.painless.Globals;
import org.elasticsearch.painless.Locals;
import org.elasticsearch.painless.Location;
import org.elasticsearch.painless.MethodWriter;
import java.util.List;
import java.util.Objects;
import java.util.Set;
/**
* Represents and object instantiation.
*/
public final class ENewObj extends AExpression {
private final String type;
private final List<AExpression> arguments;
private Method constructor;
public ENewObj(Location location, String type, List<AExpression> arguments) {
super(location);
this.type = Objects.requireNonNull(type);
this.arguments = Objects.requireNonNull(arguments);
}
@Override
void extractVariables(Set<String> variables) {
for (AExpression argument : arguments) {
argument.extractVariables(variables);
}
}
@Override
void analyze(Locals locals) {
final Type type;
try {
type = locals.getDefinition().getType(this.type);
} catch (IllegalArgumentException exception) {
throw createError(new IllegalArgumentException("Not a type [" + this.type + "]."));
}
Struct struct = type.struct;
constructor = struct.constructors.get(new Definition.MethodKey("<init>", arguments.size()));
if (constructor != null) {
Type[] types = new Type[constructor.arguments.size()];
constructor.arguments.toArray(types);
if (constructor.arguments.size() != arguments.size()) {
throw createError(new IllegalArgumentException("When calling constructor on type [" + struct.name + "]" +
" expected [" + constructor.arguments.size() + "] arguments, but found [" + arguments.size() + "]."));
}
for (int argument = 0; argument < arguments.size(); ++argument) {
AExpression expression = arguments.get(argument);
expression.expected = types[argument];
expression.internal = true;
expression.analyze(locals);
arguments.set(argument, expression.cast(locals));
}
statement = true;
actual = type;
} else {
throw createError(new IllegalArgumentException("Unknown new call on type [" + struct.name + "]."));
}
}
@Override
void write(MethodWriter writer, Globals globals) {
writer.writeDebugInfo(location);
writer.newInstance(actual.type);
if (read) {
writer.dup();
}
for (AExpression argument : arguments) {
argument.write(writer, globals);
}
writer.invokeConstructor(constructor.owner.type, constructor.method);
}
@Override
public String toString() {
return singleLineToStringWithOptionalArgs(arguments, type);
}
}