Java Code Examples for jdk.internal.org.objectweb.asm.ClassReader#readUnsignedShort()

The following examples show how to use jdk.internal.org.objectweb.asm.ClassReader#readUnsignedShort() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source File: ClassFileAttributes.java    From openjdk-jdk9 with GNU General Public License v2.0 6 votes vote down vote up 
@Override
protected Attribute read(ClassReader cr,
                         int off,
                         int len,
                         char[] buf,
                         int codeOff,
                         Label[] labels)
{
    // package count
    int package_count = cr.readUnsignedShort(off);
    off += 2;

    // packages
    Set<String> packages = new HashSet<>();
    for (int i=0; i<package_count; i++) {
        String pkg = cr.readPackage(off, buf).replace('/', '.');
        packages.add(pkg);
        off += 2;
    }

    return new ModulePackagesAttribute(packages);
}
Example 2
Source File: ClassFileAttributes.java    From openjdk-jdk9 with GNU General Public License v2.0 6 votes vote down vote up 
@Override
protected Attribute read(ClassReader cr,
                         int off,
                         int len,
                         char[] buf,
                         int codeOff,
                         Label[] labels)
{

    String targetPlatform = null;

    int target_platform_index = cr.readUnsignedShort(off);
    if (target_platform_index != 0)
        targetPlatform = cr.readUTF8(off, buf);
    off += 2;

    return new ModuleTargetAttribute(targetPlatform);
}
Example 3
Source File: ModuleResolutionAttribute.java    From Bytecoder with Apache License 2.0 5 votes vote down vote up 
@Override
protected Attribute read(
        final ClassReader classReader,
        final int offset,
        final int length,
        final char[] charBuffer,
        final int codeOffset,
        final Label[] labels) {
    return new ModuleResolutionAttribute(classReader.readUnsignedShort(offset));
}
Example 4
Source File: ModuleHashesAttribute.java    From Bytecoder with Apache License 2.0 5 votes vote down vote up 
@Override
protected Attribute read(
        final ClassReader classReader,
        final int offset,
        final int length,
        final char[] charBuffer,
        final int codeAttributeOffset,
        final Label[] labels) {
    int currentOffset = offset;

    String hashAlgorithm = classReader.readUTF8(currentOffset, charBuffer);
    currentOffset += 2;

    int numModules = classReader.readUnsignedShort(currentOffset);
    currentOffset += 2;

    ArrayList<String> moduleList = new ArrayList<String>(numModules);
    ArrayList<byte[]> hashList = new ArrayList<byte[]>(numModules);

    for (int i = 0; i < numModules; ++i) {
        String module = classReader.readModule(currentOffset, charBuffer);
        currentOffset += 2;
        moduleList.add(module);

        int hashLength = classReader.readUnsignedShort(currentOffset);
        currentOffset += 2;
        byte[] hash = new byte[hashLength];
        for (int j = 0; j < hashLength; ++j) {
            hash[j] = (byte) (classReader.readByte(currentOffset) & 0xFF);
            currentOffset += 1;
        }
        hashList.add(hash);
    }
    return new ModuleHashesAttribute(hashAlgorithm, moduleList, hashList);
}
Example 5
Source File: ClassFileAttributes.java    From openjdk-jdk9 with GNU General Public License v2.0 5 votes vote down vote up 
@Override
protected Attribute read(ClassReader cr,
                         int off,
                         int len,
                         char[] buf,
                         int codeOff,
                         Label[] labels)
{
    String algorithm = cr.readUTF8(off, buf);
    off += 2;

    int hashes_count = cr.readUnsignedShort(off);
    off += 2;

    Map<String, byte[]> map = new HashMap<>();
    for (int i=0; i<hashes_count; i++) {
        String mn = cr.readModule(off, buf);
        off += 2;

        int hash_length = cr.readUnsignedShort(off);
        off += 2;
        byte[] hash = new byte[hash_length];
        for (int j=0; j<hash_length; j++) {
            hash[j] = (byte) (0xff & cr.readByte(off+j));
        }
        off += hash_length;

        map.put(mn, hash);
    }

    ModuleHashes hashes = new ModuleHashes(algorithm, map);

    return new ModuleHashesAttribute(hashes);
}
Example 6
Source File: ClassFileAttributes.java    From openjdk-jdk9 with GNU General Public License v2.0 5 votes vote down vote up 
@Override
protected Attribute read(ClassReader cr,
                         int off,
                         int len,
                         char[] buf,
                         int codeOff,
                         Label[] labels)
{
    int flags = cr.readUnsignedShort(off);
    return new ModuleResolutionAttribute(flags);
}