Examples with ByteArray com.android.dx.util.ByteArray used on opensource projects

Example 11 with ByteArray

use of com.android.dx.util.ByteArray in project buck by facebook.

the class AttributeFactory method parse0.

/**
     * Parses attribute content. The base class implements this by constructing
     * an instance of {@link RawAttribute}. Subclasses are expected to
     * override this to do something better in most cases.
     *
     * @param cf {@code non-null;} class file to parse from
     * @param context context to parse in; one of the {@code CTX_*}
     * constants
     * @param name {@code non-null;} the attribute name
     * @param offset offset into {@code bytes} to start parsing at; this
     * is the offset to the start of attribute data, not to the header
     * @param length the length of the attribute data
     * @param observer {@code null-ok;} parse observer to report to, if any
     * @return {@code non-null;} an appropriately-constructed {@link Attribute}
     */
protected Attribute parse0(DirectClassFile cf, int context, String name, int offset, int length, ParseObserver observer) {
    ByteArray bytes = cf.getBytes();
    ConstantPool pool = cf.getConstantPool();
    Attribute result = new RawAttribute(name, bytes, offset, length, pool);
    if (observer != null) {
        observer.parsed(bytes, offset, length, "attribute data");
    }
    return result;
}

Example 12 with ByteArray

use of com.android.dx.util.ByteArray in project buck by facebook.

the class AttributeFactory method parse.

/**
     * Parses and makes an attribute based on the bytes at the
     * indicated position in the given array. This method figures out
     * the name, and then does all the setup to call on to {@link #parse0},
     * which does the actual construction.
     *
     * @param cf {@code non-null;} class file to parse from
     * @param context context to parse in; one of the {@code CTX_*}
     * constants
     * @param offset offset into {@code dcf}'s {@code bytes}
     * to start parsing at
     * @param observer {@code null-ok;} parse observer to report to, if any
     * @return {@code non-null;} an appropriately-constructed {@link Attribute}
     */
public final Attribute parse(DirectClassFile cf, int context, int offset, ParseObserver observer) {
    if (cf == null) {
        throw new NullPointerException("cf == null");
    }
    if ((context < 0) || (context >= CTX_COUNT)) {
        throw new IllegalArgumentException("bad context");
    }
    CstString name = null;
    try {
        ByteArray bytes = cf.getBytes();
        ConstantPool pool = cf.getConstantPool();
        int nameIdx = bytes.getUnsignedShort(offset);
        int length = bytes.getInt(offset + 2);
        name = (CstString) pool.get(nameIdx);
        if (observer != null) {
            observer.parsed(bytes, offset, 2, "name: " + name.toHuman());
            observer.parsed(bytes, offset + 2, 4, "length: " + Hex.u4(length));
        }
        return parse0(cf, context, name.getString(), offset + 6, length, observer);
    } catch (ParseException ex) {
        ex.addContext("...while parsing " + ((name != null) ? (name.toHuman() + " ") : "") + "attribute at offset " + Hex.u4(offset));
        throw ex;
    }
}

Example 13 with ByteArray

use of com.android.dx.util.ByteArray in project J2ME-Loader by nikita36078.

the class ConstantPoolParser method parseUtf8.

/**
 * Parses a utf8 constant.
 *
 * @param at offset to the start of the constant (where the tag byte is)
 * @return {@code non-null;} the parsed value
 */
private CstString parseUtf8(int at) {
    int length = bytes.getUnsignedShort(at + 1);
    // Skip to the data.
    at += 3;
    ByteArray ubytes = bytes.slice(at, at + length);
    try {
        return new CstString(ubytes);
    } catch (IllegalArgumentException ex) {
        // Translate the exception
        throw new ParseException(ex);
    }
}

Example 14 with ByteArray

use of com.android.dx.util.ByteArray in project J2ME-Loader by nikita36078.

the class AttributeFactory method parse.

/**
 * Parses and makes an attribute based on the bytes at the
 * indicated position in the given array. This method figures out
 * the name, and then does all the setup to call on to {@link #parse0},
 * which does the actual construction.
 *
 * @param cf {@code non-null;} class file to parse from
 * @param context context to parse in; one of the {@code CTX_*}
 * constants
 * @param offset offset into {@code dcf}'s {@code bytes}
 * to start parsing at
 * @param observer {@code null-ok;} parse observer to report to, if any
 * @return {@code non-null;} an appropriately-constructed {@link Attribute}
 */
public final Attribute parse(DirectClassFile cf, int context, int offset, ParseObserver observer) {
    if (cf == null) {
        throw new NullPointerException("cf == null");
    }
    if ((context < 0) || (context >= CTX_COUNT)) {
        throw new IllegalArgumentException("bad context");
    }
    CstString name = null;
    try {
        ByteArray bytes = cf.getBytes();
        ConstantPool pool = cf.getConstantPool();
        int nameIdx = bytes.getUnsignedShort(offset);
        int length = bytes.getInt(offset + 2);
        name = (CstString) pool.get(nameIdx);
        if (observer != null) {
            observer.parsed(bytes, offset, 2, "name: " + name.toHuman());
            observer.parsed(bytes, offset + 2, 4, "length: " + Hex.u4(length));
        }
        return parse0(cf, context, name.getString(), offset + 6, length, observer);
    } catch (ParseException ex) {
        ex.addContext("...while parsing " + ((name != null) ? (name.toHuman() + " ") : "") + "attribute at offset " + Hex.u4(offset));
        throw ex;
    }
}

Example 15 with ByteArray

use of com.android.dx.util.ByteArray in project J2ME-Loader by nikita36078.

the class AttributeFactory method parse0.

/**
 * Parses attribute content. The base class implements this by constructing
 * an instance of {@link RawAttribute}. Subclasses are expected to
 * override this to do something better in most cases.
 *
 * @param cf {@code non-null;} class file to parse from
 * @param context context to parse in; one of the {@code CTX_*}
 * constants
 * @param name {@code non-null;} the attribute name
 * @param offset offset into {@code bytes} to start parsing at; this
 * is the offset to the start of attribute data, not to the header
 * @param length the length of the attribute data
 * @param observer {@code null-ok;} parse observer to report to, if any
 * @return {@code non-null;} an appropriately-constructed {@link Attribute}
 */
protected Attribute parse0(DirectClassFile cf, int context, String name, int offset, int length, ParseObserver observer) {
    ByteArray bytes = cf.getBytes();
    ConstantPool pool = cf.getConstantPool();
    Attribute result = new RawAttribute(name, bytes, offset, length, pool);
    if (observer != null) {
        observer.parsed(bytes, offset, length, "attribute data");
    }
    return result;
}