Class ModuleHashesAttribute


  • public final class ModuleHashesAttribute
    extends Attribute
    A ModuleHashes attribute. This attribute is specific to the OpenJDK and may change in the future.
    • Field Detail

      • algorithm

        public java.lang.String algorithm
        The name of the hashing algorithm.
      • modules

        public java.util.List<java.lang.String> modules
        A list of module names.
      • hashes

        public java.util.List<byte[]> hashes
        The hash of the modules in modules. The two lists must have the same size.
    • Constructor Detail

      • ModuleHashesAttribute

        public ModuleHashesAttribute​(java.lang.String algorithm,
                                     java.util.List<java.lang.String> modules,
                                     java.util.List<byte[]> hashes)
        Constructs a new ModuleHashesAttribute.
        Parameters:
        algorithm - the name of the hashing algorithm.
        modules - a list of module names.
        hashes - the hash of the modules in 'modules'. The two lists must have the same size.
    • Method Detail

      • read

        protected Attribute read​(ClassReader classReader,
                                 int offset,
                                 int length,
                                 char[] charBuffer,
                                 int codeAttributeOffset,
                                 Label[] labels)
        Description copied from class: Attribute
        Reads a Attribute.type attribute. This method must return a new Attribute object, of type Attribute.type, corresponding to the 'length' bytes starting at 'offset', in the given ClassReader.
        Overrides:
        read in class Attribute
        Parameters:
        classReader - the class that contains the attribute to be read.
        offset - index of the first byte of the attribute's content in ClassReader. The 6 attribute header bytes (attribute_name_index and attribute_length) are not taken into account here.
        length - the length of the attribute's content (excluding the 6 attribute header bytes).
        charBuffer - the buffer to be used to call the ClassReader methods requiring a 'charBuffer' parameter.
        codeAttributeOffset - index of the first byte of content of the enclosing Code attribute in ClassReader, or -1 if the attribute to be read is not a Code attribute. The 6 attribute header bytes (attribute_name_index and attribute_length) are not taken into account here.
        labels - the labels of the method's code, or null if the attribute to be read is not a Code attribute.
        Returns:
        a new Attribute object corresponding to the specified bytes.
      • write

        protected ByteVector write​(ClassWriter classWriter,
                                   byte[] code,
                                   int codeLength,
                                   int maxStack,
                                   int maxLocals)
        Description copied from class: Attribute
        Returns the byte array form of the content of this attribute. The 6 header bytes (attribute_name_index and attribute_length) must not be added in the returned ByteVector.
        Overrides:
        write in class Attribute
        Parameters:
        classWriter - the class to which this attribute must be added. This parameter can be used to add the items that corresponds to this attribute to the constant pool of this class.
        code - the bytecode of the method corresponding to this Code attribute, or null if this attribute is not a Code attribute. Corresponds to the 'code' field of the Code attribute.
        codeLength - the length of the bytecode of the method corresponding to this code attribute, or 0 if this attribute is not a Code attribute. Corresponds to the 'code_length' field of the Code attribute.
        maxStack - the maximum stack size of the method corresponding to this Code attribute, or -1 if this attribute is not a Code attribute.
        maxLocals - the maximum number of local variables of the method corresponding to this code attribute, or -1 if this attribute is not a Code attribute.
        Returns:
        the byte array form of this attribute.