org.jetbrains.jet.lang.resolve.calls.model.DataFlowInfoForArgumentsImpl Maven / Gradle / Ivy
/*
* Copyright 2010-2014 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 org.jetbrains.jet.lang.resolve.calls.model;
import com.google.common.collect.Maps;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.jet.lang.psi.Call;
import org.jetbrains.jet.lang.psi.ValueArgument;
import org.jetbrains.jet.lang.resolve.calls.autocasts.DataFlowInfo;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
public class DataFlowInfoForArgumentsImpl implements MutableDataFlowInfoForArguments {
private final Call call; //for better debug messages only
private final Map infoMap = Maps.newHashMap();
private final Map nextArgument = Maps.newHashMap();
private DataFlowInfo initialInfo;
private DataFlowInfo resultInfo;
public DataFlowInfoForArgumentsImpl(@NotNull Call call) {
this.call = call;
initNextArgMap(call.getValueArguments());
}
private void initNextArgMap(@NotNull List valueArguments) {
Iterator iterator = valueArguments.iterator();
ValueArgument prev = null;
while (iterator.hasNext()) {
ValueArgument argument = iterator.next();
if (prev != null) {
nextArgument.put(prev, argument);
}
prev = argument;
}
}
@Override
public void setInitialDataFlowInfo(@NotNull DataFlowInfo dataFlowInfo) {
//TODO assert initialInfo == null
initialInfo = dataFlowInfo;
}
@NotNull
@Override
public DataFlowInfo getInfo(@NotNull ValueArgument valueArgument) {
DataFlowInfo infoForArgument = infoMap.get(valueArgument);
if (infoForArgument == null) {
return initialInfo;
}
return initialInfo.and(infoForArgument);
}
@Override
public void updateInfo(@NotNull ValueArgument valueArgument, @NotNull DataFlowInfo dataFlowInfo) {
ValueArgument next = nextArgument.get(valueArgument);
if (next != null) {
infoMap.put(next, dataFlowInfo);
return;
}
//TODO assert resultInfo == null
resultInfo = dataFlowInfo;
}
@NotNull
@Override
public DataFlowInfo getResultInfo() {
if (resultInfo == null) return initialInfo;
assert initialInfo != null : "Initial data flow info was not set for call: " + call;
return initialInfo.and(resultInfo);
}
}