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*
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package org.jf.dexlib2.dexbacked.reference;
import com.google.common.collect.ImmutableList;
import org.jf.dexlib2.base.reference.BaseMethodProtoReference;
import org.jf.dexlib2.dexbacked.DexBackedDexFile;
import org.jf.dexlib2.dexbacked.raw.ProtoIdItem;
import org.jf.dexlib2.dexbacked.raw.TypeListItem;
import org.jf.dexlib2.dexbacked.util.FixedSizeList;
import javax.annotation.Nonnull;
import java.util.List;
public class DexBackedMethodProtoReference extends BaseMethodProtoReference {
@Nonnull public final DexBackedDexFile dexFile;
private final int protoIndex;
public DexBackedMethodProtoReference(@Nonnull DexBackedDexFile dexFile, int protoIndex) {
this.dexFile = dexFile;
this.protoIndex = protoIndex;
}
@Nonnull
@Override
public List<String> getParameterTypes() {
final int parametersOffset = dexFile.getBuffer().readSmallUint(dexFile.getProtoSection().getOffset(protoIndex) +
ProtoIdItem.PARAMETERS_OFFSET);
if (parametersOffset > 0) {
final int parameterCount = dexFile.getDataBuffer().readSmallUint(
parametersOffset + TypeListItem.SIZE_OFFSET);
final int paramListStart = parametersOffset + TypeListItem.LIST_OFFSET;
return new FixedSizeList<String>() {
@Nonnull
@Override
public String readItem(final int index) {
return dexFile.getTypeSection().get(dexFile.getDataBuffer().readUshort(paramListStart + 2*index));
}
@Override public int size() { return parameterCount; }
};
}
return ImmutableList.of();
}
@Nonnull
@Override
public String getReturnType() {
return dexFile.getTypeSection().get(dexFile.getBuffer().readSmallUint(
dexFile.getProtoSection().getOffset(protoIndex) + ProtoIdItem.RETURN_TYPE_OFFSET));
}
Calculate and return the private size of a method proto.
Calculated as: shorty_idx + return_type_idx + parameters_off + type_list size
Returns: size in bytes
/**
* Calculate and return the private size of a method proto.
*
* Calculated as: shorty_idx + return_type_idx + parameters_off + type_list size
*
* @return size in bytes
*/
public int getSize() {
int size = ProtoIdItem.ITEM_SIZE; //3 * uint
List<String> parameters = getParameterTypes();
if (!parameters.isEmpty()) {
size += 4 + parameters.size() * 2; //uint + size * ushort for type_idxs
}
return size;
}
@Override
public void validateReference() throws InvalidReferenceException {
if (protoIndex < 0 || protoIndex >= dexFile.getProtoSection().size()) {
throw new InvalidReferenceException("proto@" + protoIndex);
}
}
}