/*
* 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.Struct;
import org.elasticsearch.painless.Definition.Type;
import org.elasticsearch.painless.Globals;
import org.elasticsearch.painless.Location;
import org.elasticsearch.painless.Definition.Method;
import org.elasticsearch.painless.Definition.Sort;
import java.util.Objects;
import java.util.Set;
import org.elasticsearch.painless.Locals;
import org.elasticsearch.painless.MethodWriter;
/**
* Represents a map load/store shortcut. (Internal only.)
*/
final class PSubMapShortcut extends AStoreable {
private final Struct struct;
private AExpression index;
private Method getter;
private Method setter;
PSubMapShortcut(Location location, Struct struct, AExpression index) {
super(location);
this.struct = Objects.requireNonNull(struct);
this.index = Objects.requireNonNull(index);
}
@Override
void extractVariables(Set<String> variables) {
throw createError(new IllegalStateException("Illegal tree structure."));
}
@Override
void analyze(Locals locals) {
getter = struct.methods.get(new Definition.MethodKey("get", 1));
setter = struct.methods.get(new Definition.MethodKey("put", 2));
if (getter != null && (getter.rtn.sort == Sort.VOID || getter.arguments.size() != 1)) {
throw createError(new IllegalArgumentException("Illegal map get shortcut for type [" + struct.name + "]."));
}
if (setter != null && setter.arguments.size() != 2) {
throw createError(new IllegalArgumentException("Illegal map set shortcut for type [" + struct.name + "]."));
}
if (getter != null && setter != null &&
(!getter.arguments.get(0).equals(setter.arguments.get(0)) || !getter.rtn.equals(setter.arguments.get(1)))) {
throw createError(new IllegalArgumentException("Shortcut argument types must match."));
}
if ((read || write) && (!read || getter != null) && (!write || setter != null)) {
index.expected = setter != null ? setter.arguments.get(0) : getter.arguments.get(0);
index.analyze(locals);
index = index.cast(locals);
actual = setter != null ? setter.arguments.get(1) : getter.rtn;
} else {
throw createError(new IllegalArgumentException("Illegal map shortcut for type [" + struct.name + "]."));
}
}
@Override
void write(MethodWriter writer, Globals globals) {
index.write(writer, 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 2;
}
@Override
boolean isDefOptimized() {
return false;
}
@Override
void updateActual(Type actual) {
throw new IllegalArgumentException("Illegal tree structure.");
}
@Override
void setup(MethodWriter writer, Globals globals) {
index.write(writer, globals);
}
@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, index);
}
}