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// Copyright (c) 2018, the R8 project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.
package com.android.tools.r8.code;
import com.android.tools.r8.dex.IndexedItemCollection;
import com.android.tools.r8.errors.Unreachable;
import com.android.tools.r8.graph.DexReference;
import com.android.tools.r8.graph.GraphLens;
import com.android.tools.r8.graph.ObjectToOffsetMapping;
import com.android.tools.r8.graph.ProgramMethod;
import com.android.tools.r8.graph.UseRegistry;
import com.android.tools.r8.ir.conversion.IRBuilder;
import com.android.tools.r8.ir.conversion.LensCodeRewriterUtils;
import com.android.tools.r8.naming.ClassNameMapper;
import com.android.tools.r8.naming.dexitembasedstring.NameComputationInfo;
import com.android.tools.r8.utils.structural.StructuralSpecification;
import java.nio.ShortBuffer;
public class DexItemBasedConstString extends Format21c<DexReference> {
public static final String NAME = "DexItemBasedConstString";
public static final String SMALI_NAME = "const-string*";
private final NameComputationInfo<?> nameComputationInfo;
public DexItemBasedConstString(
int register, DexReference string, NameComputationInfo<?> nameComputationInfo) {
super(register, string);
this.nameComputationInfo = nameComputationInfo;
}
public DexReference getItem() {
return BBBB;
}
public NameComputationInfo<?> getNameComputationInfo() {
return nameComputationInfo;
}
@Override
public void collectIndexedItems(
IndexedItemCollection indexedItems,
ProgramMethod context,
GraphLens graphLens,
LensCodeRewriterUtils rewriter) {
getItem().collectIndexedItems(indexedItems);
}
@Override
public String getName() {
return NAME;
}
@Override
public String getSmaliName() {
return SMALI_NAME;
}
@Override
public int getOpcode() {
throw new Unreachable(
"DexItemBasedConstString instructions should always be rewritten into ConstString");
}
@Override
int getCompareToId() {
return DexCompareHelper.DEX_ITEM_CONST_STRING_COMPARE_ID;
}
@Override
void internalSubSpecify(StructuralSpecification<Format21c<DexReference>, ?> spec) {
spec.withDexReference(i -> i.BBBB);
}
@Override
public DexItemBasedConstString asDexItemBasedConstString() {
return this;
}
@Override
public boolean isDexItemBasedConstString() {
return true;
}
@Override
public String toString(ClassNameMapper naming) {
// TODO(christofferqa): Apply mapping to item.
return formatString("v" + AA + ", \"" + BBBB.toString() + "\"");
}
@Override
public String toSmaliString(ClassNameMapper naming) {
// TODO(christofferqa): Apply mapping to item.
return formatSmaliString("v" + AA + ", \"" + BBBB.toString() + "\"");
}
@Override
public void write(
ShortBuffer dest,
ProgramMethod context,
GraphLens graphLens,
ObjectToOffsetMapping mapping,
LensCodeRewriterUtils rewriter) {
throw new Unreachable(
"DexItemBasedConstString instructions should always be rewritten into ConstString");
}
@Override
public void registerUse(UseRegistry registry) {
if (nameComputationInfo.needsToRegisterReference()) {
assert getItem().isDexType();
registry.registerTypeReference(getItem().asDexType());
}
}
@Override
public void buildIR(IRBuilder builder) {
builder.addDexItemBasedConstString(AA, (DexReference) BBBB, nameComputationInfo);
}
@Override
public boolean canThrow() {
return true;
}
}