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/*
* Copyright 2018, Google LLC
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google LLC nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package com.android.tools.smali.dexlib2.writer.builder;
import com.android.tools.smali.dexlib2.writer.CallSiteSection;
import com.android.tools.smali.dexlib2.writer.builder.BuilderEncodedValues.BuilderArrayEncodedValue;
import com.android.tools.smali.dexlib2.iface.reference.CallSiteReference;
import com.android.tools.smali.dexlib2.writer.util.CallSiteUtil;
import javax.annotation.Nonnull;
import java.util.Collection;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;
public class BuilderCallSitePool extends BaseBuilderPool
implements CallSiteSection<BuilderCallSiteReference, BuilderArrayEncodedValue> {
@Nonnull private final ConcurrentMap<CallSiteReference, BuilderCallSiteReference> internedItems =
new ConcurrentHashMap<>();
public BuilderCallSitePool(@Nonnull DexBuilder dexBuilder) {
super(dexBuilder);
}
@Nonnull public BuilderCallSiteReference internCallSite(@Nonnull CallSiteReference callSiteReference) {
BuilderCallSiteReference internedCallSite = internedItems.get(callSiteReference);
if (internedCallSite != null) {
return internedCallSite;
}
BuilderArrayEncodedValue encodedCallSite = dexBuilder.encodedArraySection.internArrayEncodedValue(
CallSiteUtil.getEncodedCallSite(callSiteReference));
internedCallSite = new BuilderCallSiteReference(callSiteReference.getName(), encodedCallSite);
BuilderCallSiteReference existing = internedItems.putIfAbsent(internedCallSite, internedCallSite);
return existing == null ? internedCallSite : existing;
}
@Override
public BuilderArrayEncodedValue getEncodedCallSite(BuilderCallSiteReference callSiteReference) {
return callSiteReference.encodedCallSite;
}
@Override
public int getItemIndex(@Nonnull BuilderCallSiteReference builderCallSite) {
return builderCallSite.index;
}
@Nonnull
@Override
public Collection<? extends Map.Entry<? extends BuilderCallSiteReference, Integer>> getItems() {
return new BuilderMapEntryCollection<BuilderCallSiteReference>(internedItems.values()) {
@Override
protected int getValue(@Nonnull BuilderCallSiteReference builderCallSiteReference) {
return builderCallSiteReference.index;
}
@Override
protected int setValue(@Nonnull BuilderCallSiteReference builderCallSiteReference, int value) {
int prev = builderCallSiteReference.index;
builderCallSiteReference.index = value;
return prev;
}
};
}
@Override
public int getItemCount() {
return internedItems.size();
}
}
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