/*
* 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.Method;
import org.elasticsearch.painless.Definition.MethodKey;
import org.elasticsearch.painless.Definition.Sort;
import org.elasticsearch.painless.Definition.Struct;
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 a method call and defers to a child subnode.
*/
public final class PCallInvoke extends AExpression {
private final String name;
private final boolean nullSafe;
private final List<AExpression> arguments;
private AExpression sub = null;
public PCallInvoke(Location location, AExpression prefix, String name, boolean nullSafe, List<AExpression> arguments) {
super(location, prefix);
this.name = Objects.requireNonNull(name);
this.nullSafe = nullSafe;
this.arguments = Objects.requireNonNull(arguments);
}
@Override
void extractVariables(Set<String> variables) {
prefix.extractVariables(variables);
for (AExpression argument : arguments) {
argument.extractVariables(variables);
}
}
@Override
void analyze(Locals locals) {
prefix.analyze(locals);
prefix.expected = prefix.actual;
prefix = prefix.cast(locals);
if (prefix.actual.sort == Sort.ARRAY) {
throw createError(new IllegalArgumentException("Illegal call [" + name + "] on array type."));
}
Struct struct = prefix.actual.struct;
if (prefix.actual.sort.primitive) {
struct = locals.getDefinition().getType(prefix.actual.sort.boxed.getSimpleName()).struct;
}
MethodKey methodKey = new MethodKey(name, arguments.size());
Method method = prefix instanceof EStatic ? struct.staticMethods.get(methodKey) : struct.methods.get(methodKey);
if (method != null) {
sub = new PSubCallInvoke(location, method, prefix.actual, arguments);
} else if (prefix.actual.sort == Sort.DEF) {
sub = new PSubDefCall(location, name, arguments);
} else {
throw createError(new IllegalArgumentException(
"Unknown call [" + name + "] with [" + arguments.size() + "] arguments on type [" + struct.name + "]."));
}
if (nullSafe) {
sub = new PSubNullSafeCallInvoke(location, sub);
}
sub.expected = expected;
sub.explicit = explicit;
sub.analyze(locals);
actual = sub.actual;
statement = true;
}
@Override
void write(MethodWriter writer, Globals globals) {
prefix.write(writer, globals);
sub.write(writer, globals);
}
@Override
public String toString() {
return singleLineToStringWithOptionalArgs(arguments, prefix, name);
}
}