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// Copyright (c) 2017, 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.InternalCompilerError;
import com.android.tools.r8.graph.DexMethodHandle;
import com.android.tools.r8.graph.GraphLens;
import com.android.tools.r8.graph.ObjectToOffsetMapping;
import com.android.tools.r8.graph.OffsetToObjectMapping;
import com.android.tools.r8.graph.ProgramMethod;
import com.android.tools.r8.graph.UseRegistry;
import com.android.tools.r8.graph.UseRegistry.MethodHandleUse;
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.utils.structural.StructuralSpecification;
import java.nio.ShortBuffer;
public class ConstMethodHandle extends Format21c<DexMethodHandle> {
public static final int OPCODE = 0xfe;
public static final String NAME = "ConstMethodHandle";
public static final String SMALI_NAME = "const-method-handle";
ConstMethodHandle(int high, BytecodeStream stream, OffsetToObjectMapping mapping) {
super(high, stream, mapping.getMethodHandleMap());
}
public ConstMethodHandle(int register, DexMethodHandle methodHandle) {
super(register, methodHandle);
}
public DexMethodHandle getMethodHandle() {
return BBBB;
}
@Override
public String getName() {
return NAME;
}
@Override
public String getSmaliName() {
return SMALI_NAME;
}
@Override
public int getOpcode() {
return OPCODE;
}
@Override
void internalSubSpecify(StructuralSpecification<Format21c<DexMethodHandle>, ?> spec) {
spec.withItem(i -> i.BBBB);
}
@Override
public String toString(ClassNameMapper naming) {
return formatString("v" + AA + ", \"" + BBBB.toString() + "\"");
}
@Override
public String toSmaliString(ClassNameMapper naming) {
return formatSmaliString("v" + AA + ", \"" + BBBB.toString() + "\"");
}
@Override
public void registerUse(UseRegistry registry) {
registry.registerMethodHandle(
getMethodHandle(), MethodHandleUse.NOT_ARGUMENT_TO_LAMBDA_METAFACTORY);
}
@Override
public void write(
ShortBuffer dest,
ProgramMethod context,
GraphLens graphLens,
ObjectToOffsetMapping mapping,
LensCodeRewriterUtils rewriter) {
DexMethodHandle rewritten =
rewriter.rewriteDexMethodHandle(
getMethodHandle(), MethodHandleUse.NOT_ARGUMENT_TO_LAMBDA_METAFACTORY, context);
int index = rewritten.getOffset(mapping);
if (index != (index & 0xffff)) {
throw new InternalCompilerError("MethodHandle-index overflow.");
}
writeFirst(AA, dest);
write16BitReference(rewritten, dest, mapping);
}
@Override
public void collectIndexedItems(
IndexedItemCollection indexedItems,
ProgramMethod context,
GraphLens graphLens,
LensCodeRewriterUtils rewriter) {
DexMethodHandle rewritten =
rewriter.rewriteDexMethodHandle(
getMethodHandle(), MethodHandleUse.NOT_ARGUMENT_TO_LAMBDA_METAFACTORY, context);
rewritten.collectIndexedItems(indexedItems);
}
@Override
public void buildIR(IRBuilder builder) {
builder.addConstMethodHandle(AA, BBBB);
}
@Override
public boolean canThrow() {
return true;
}
}