Class DirectClassFile

dexfixer/src/com/android/dx/cf/direct/DirectClassFile.java:45–688

Class file with info taken from a byte[] or slice thereof.

 * Class file with info taken from a {@code byte[]} or slice thereof.
 */
public class DirectClassFile implements ClassFile {
    /** the expected value of the ClassFile.magic field */
    private static final int CLASS_FILE_MAGIC = 0xcafebabe;

    /**
     * minimum {@code .class} file major version
     *
     * See http://en.wikipedia.org/wiki/Java_class_file for an up-to-date
     * list of version numbers. Currently known (taken from that table) are:
     *
     *     Java SE 9 = 53 (0x35 hex),
     *     Java SE 8 = 52 (0x34 hex),
     *     Java SE 7 = 51 (0x33 hex),
     *     Java SE 6.0 = 50 (0x32 hex),
     *     Java SE 5.0 = 49 (0x31 hex),
     *     JDK 1.4 = 48 (0x30 hex),
     *     JDK 1.3 = 47 (0x2F hex),
     *     JDK 1.2 = 46 (0x2E hex),
     *     JDK 1.1 = 45 (0x2D hex).
     *
     * Valid ranges are typically of the form
     * "A.0 through B.C inclusive" where A <= B and C >= 0,
     * which is why we don't have a CLASS_FILE_MIN_MINOR_VERSION.
     */
    private static final int CLASS_FILE_MIN_MAJOR_VERSION = 45;

    /**
     * maximum {@code .class} file major version
     *
     * Note: if you change this, please change "java.class.version" in System.java.
     */
    private static final int CLASS_FILE_MAX_MAJOR_VERSION = 53;

    /** maximum {@code .class} file minor version */
    private static final int CLASS_FILE_MAX_MINOR_VERSION = 0;

    /**
     * {@code non-null;} the file path for the class, excluding any base directory
     * specification
     */
    private final String filePath;

    /** {@code non-null;} the bytes of the file */
    private final ByteArray bytes;

    /**
     * whether to be strict about parsing; if
     * {@code false}, this avoids doing checks that only exist
     * for purposes of verification (such as magic number matching and
     * path-package consistency checking)
     */
    private final boolean strictParse;

    /**
     * {@code null-ok;} the constant pool; only ever {@code null}
     * before the constant pool is successfully parsed
     */
    private StdConstantPool pool;