/*
* 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.Sort;
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.Set;
/**
* Represents a field load/store shortcut. (Internal only.)
*/
final class PSubShortcut extends AStoreable {
private final String value;
private final String type;
private final Method getter;
private final Method setter;
PSubShortcut(Location location, String value, String type, Method getter, Method setter) {
super(location);
this.value = value;
this.type = type;
this.getter = getter;
this.setter = setter;
}
@Override
void extractVariables(Set<String> variables) {
throw createError(new IllegalStateException("Illegal tree structure."));
}
@Override
void analyze(Locals locals) {
if (getter != null && (getter.rtn.sort == Sort.VOID || !getter.arguments.isEmpty())) {
throw createError(new IllegalArgumentException(
"Illegal get shortcut on field [" + value + "] for type [" + type + "]."));
}
if (setter != null && (setter.rtn.sort != Sort.VOID || setter.arguments.size() != 1)) {
throw createError(new IllegalArgumentException(
"Illegal set shortcut on field [" + value + "] for type [" + type + "]."));
}
if (getter != null && setter != null && setter.arguments.get(0) != getter.rtn) {
throw createError(new IllegalArgumentException("Shortcut argument types must match."));
}
if ((getter != null || setter != null) && (!read || getter != null) && (!write || setter != null)) {
actual = setter != null ? setter.arguments.get(0) : getter.rtn;
} else {
throw createError(new IllegalArgumentException("Illegal shortcut on field [" + value + "] for type [" + type + "]."));
}
}
@Override
void write(MethodWriter writer, Globals globals) {
writer.writeDebugInfo(location);
getter.write(writer);
if (!getter.rtn.clazz.equals(getter.handle.type().returnType())) {
writer.checkCast(getter.rtn.type);
}
}
@Override
int accessElementCount() {
return 1;
}
@Override
boolean isDefOptimized() {
return false;
}
@Override
void updateActual(Type actual) {
throw new IllegalArgumentException("Illegal tree structure.");
}
@Override
void setup(MethodWriter writer, Globals globals) {
// Do nothing.
}
@Override
void load(MethodWriter writer, Globals globals) {
writer.writeDebugInfo(location);
getter.write(writer);
if (!getter.rtn.clazz.equals(getter.handle.type().returnType())) {
writer.checkCast(getter.rtn.type);
}
}
@Override
void store(MethodWriter writer, Globals globals) {
writer.writeDebugInfo(location);
setter.write(writer);
writer.writePop(setter.rtn.sort.size);
}
@Override
public String toString() {
return singleLineToString(prefix, value);
}
}