Package org.jf.dexlib2.dexbacked.value

Source Code of org.jf.dexlib2.dexbacked.value.DexBackedAnnotationEncodedValue

/*
* Copyright 2012, Google Inc.
* All rights reserved.
*
* 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.
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* 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
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package org.jf.dexlib2.dexbacked.value;

import org.jf.dexlib2.base.value.BaseAnnotationEncodedValue;
import org.jf.dexlib2.dexbacked.DexBackedAnnotationElement;
import org.jf.dexlib2.dexbacked.DexBackedDexFile;
import org.jf.dexlib2.dexbacked.DexReader;
import org.jf.dexlib2.dexbacked.util.VariableSizeSet;
import org.jf.dexlib2.iface.value.AnnotationEncodedValue;

import javax.annotation.Nonnull;
import java.util.Set;

public class DexBackedAnnotationEncodedValue extends BaseAnnotationEncodedValue implements AnnotationEncodedValue {
    @Nonnull public final DexBackedDexFile dexFile;
    @Nonnull public final String type;
    private final int elementCount;
    private final int elementsOffset;

    public DexBackedAnnotationEncodedValue(@Nonnull DexReader reader) {
        this.dexFile = reader.dexBuf;
        this.type = dexFile.getType(reader.readSmallUleb128());
        this.elementCount = reader.readSmallUleb128();
        this.elementsOffset = reader.getOffset();
        skipElements(reader, elementCount);
    }

    public static void skipFrom(@Nonnull DexReader reader) {
        reader.skipUleb128(); // type
        int elementCount = reader.readSmallUleb128();
        skipElements(reader, elementCount);
    }

    private static void skipElements(@Nonnull DexReader reader, int elementCount) {
        for (int i=0; i<elementCount; i++) {
            reader.skipUleb128();
            DexBackedEncodedValue.skipFrom(reader);
        }
    }

    @Nonnull @Override public String getType() { return type; }

    @Nonnull
    @Override
    public Set<? extends DexBackedAnnotationElement> getElements() {
        return new VariableSizeSet<DexBackedAnnotationElement>(dexFile, elementsOffset, elementCount) {
            @Nonnull
            @Override
            protected DexBackedAnnotationElement readNextItem(@Nonnull DexReader dexReader, int index) {
                return new DexBackedAnnotationElement(dexReader);
            }
        };
    }
}
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