/*
* Copyright 2003-2015 JetBrains s.r.o.
*
* Licensed 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 jetbrains.mps.core.aspects.behaviour;
import jetbrains.mps.core.aspects.behaviour.api.BHDescriptor;
import jetbrains.mps.core.aspects.behaviour.api.SMethod;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;
/**
* Primitive representation of the virtual behavior methods table.
* Must contain a mapping from a descriptor's own (!) virtual method to the BHDescriptor with its implementation
*
* Created by apyshkin on 28/07/15.
*/
public final class SMethodVirtualTable {
private final Map<SMethod<?>, BHDescriptor> myTable = new HashMap<SMethod<?>, BHDescriptor>();
SMethodVirtualTable() {
}
SMethodVirtualTable(@NotNull BHDescriptor startingDescriptor, List<SMethod<?>> methods) {
for (SMethod<?> method : methods) {
if (method.isVirtual() && !method.isAbstract()) {
myTable.put(method, startingDescriptor);
}
}
}
/**
* @param method -- method must be virtual;
* @return corresponding BHDescriptor or null if the virtual table does not contain the method
*/
@Nullable
public BHDescriptor get(@NotNull SMethod<?> method) {
return myTable.get(method);
}
/**
* merges two vTables, stores the results in this.
*/
public void merge(@NotNull final SMethodVirtualTable another) {
//noinspection UnnecessaryLocalVariable
Map<SMethod<?>, BHDescriptor> anotherTable = another.myTable;
for (Entry<SMethod<?>, BHDescriptor> pair : anotherTable.entrySet()) {
SMethod method = pair.getKey();
BHDescriptor descriptor = pair.getValue();
if (!myTable.containsKey(method)) {
myTable.put(method, descriptor);
}
}
}
@NotNull
public Set<SMethod<?>> getMethods() {
return myTable.keySet();
}
}