/*
* 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.Type;
import org.elasticsearch.painless.Globals;
import org.elasticsearch.painless.Locals;
import org.elasticsearch.painless.Location;
import org.elasticsearch.painless.MethodWriter;
import java.util.Objects;
import java.util.Set;
/**
* Represents an array length field load.
*/
final class PSubArrayLength extends AStoreable {
private final String type;
private final String value;
PSubArrayLength(Location location, String type, String value) {
super(location);
this.type = Objects.requireNonNull(type);
this.value = Objects.requireNonNull(value);
}
@Override
void extractVariables(Set<String> variables) {
throw createError(new IllegalStateException("Illegal tree structure."));
}
@Override
void analyze(Locals locals) {
if ("length".equals(value)) {
if (write) {
throw createError(new IllegalArgumentException("Cannot write to read-only field [length] for an array."));
}
actual = Definition.INT_TYPE;
} else {
throw createError(new IllegalArgumentException("Field [" + value + "] does not exist for type [" + type + "]."));
}
}
@Override
void write(MethodWriter writer, Globals globals) {
writer.writeDebugInfo(location);
writer.arrayLength();
}
@Override
int accessElementCount() {
throw new IllegalStateException("Illegal tree structure.");
}
@Override
boolean isDefOptimized() {
throw new IllegalStateException("Illegal tree structure.");
}
@Override
void updateActual(Type actual) {
throw new IllegalStateException("Illegal tree structure.");
}
@Override
void setup(MethodWriter writer, Globals globals) {
throw new IllegalStateException("Illegal tree structure.");
}
@Override
void load(MethodWriter writer, Globals globals) {
throw new IllegalStateException("Illegal tree structure.");
}
@Override
void store(MethodWriter writer, Globals globals) {
throw new IllegalStateException("Illegal tree structure.");
}
@Override
public String toString() {
return singleLineToString(prefix);
}
}