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

Example 6 with ByteArray

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

the class StdAttributeFactory method enclosingMethod.

/**
     * Parses an {@code EnclosingMethod} attribute.
     */
private Attribute enclosingMethod(DirectClassFile cf, int offset, int length, ParseObserver observer) {
    if (length != 4) {
        throwBadLength(4);
    }
    ByteArray bytes = cf.getBytes();
    ConstantPool pool = cf.getConstantPool();
    int idx = bytes.getUnsignedShort(offset);
    CstType type = (CstType) pool.get(idx);
    idx = bytes.getUnsignedShort(offset + 2);
    CstNat method = (CstNat) pool.get0Ok(idx);
    Attribute result = new AttEnclosingMethod(type, method);
    if (observer != null) {
        observer.parsed(bytes, offset, 2, "class: " + type);
        observer.parsed(bytes, offset + 2, 2, "method: " + DirectClassFile.stringOrNone(method));
    }
    return result;
}

Example 7 with ByteArray

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

the class StdAttributeFactory method signature.

/**
     * Parses a {@code Signature} attribute.
     */
private Attribute signature(DirectClassFile cf, int offset, int length, ParseObserver observer) {
    if (length != 2) {
        throwBadLength(2);
    }
    ByteArray bytes = cf.getBytes();
    ConstantPool pool = cf.getConstantPool();
    int idx = bytes.getUnsignedShort(offset);
    CstString cst = (CstString) pool.get(idx);
    Attribute result = new AttSignature(cst);
    if (observer != null) {
        observer.parsed(bytes, offset, 2, "signature: " + cst);
    }
    return result;
}

Example 8 with ByteArray

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

the class StdAttributeFactory method localVariableTable.

/**
     * Parses a {@code LocalVariableTable} attribute.
     */
private Attribute localVariableTable(DirectClassFile cf, int offset, int length, ParseObserver observer) {
    if (length < 2) {
        return throwSeverelyTruncated();
    }
    ByteArray bytes = cf.getBytes();
    int count = bytes.getUnsignedShort(offset);
    if (observer != null) {
        observer.parsed(bytes, offset, 2, "local_variable_table_length: " + Hex.u2(count));
    }
    LocalVariableList list = parseLocalVariables(bytes.slice(offset + 2, offset + length), cf.getConstantPool(), observer, count, false);
    return new AttLocalVariableTable(list);
}

Example 9 with ByteArray

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

the class StdAttributeFactory method lineNumberTable.

/**
     * Parses a {@code LineNumberTable} attribute.
     */
private Attribute lineNumberTable(DirectClassFile cf, int offset, int length, ParseObserver observer) {
    if (length < 2) {
        return throwSeverelyTruncated();
    }
    ByteArray bytes = cf.getBytes();
    // line_number_table_length
    int count = bytes.getUnsignedShort(offset);
    if (observer != null) {
        observer.parsed(bytes, offset, 2, "line_number_table_length: " + Hex.u2(count));
    }
    offset += 2;
    length -= 2;
    if (length != (count * 4)) {
        throwBadLength((count * 4) + 2);
    }
    LineNumberList list = new LineNumberList(count);
    for (int i = 0; i < count; i++) {
        int startPc = bytes.getUnsignedShort(offset);
        int lineNumber = bytes.getUnsignedShort(offset + 2);
        list.set(i, startPc, lineNumber);
        if (observer != null) {
            observer.parsed(bytes, offset, 4, Hex.u2(startPc) + " " + lineNumber);
        }
        offset += 4;
    }
    list.setImmutable();
    return new AttLineNumberTable(list);
}

Example 10 with ByteArray

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

the class AttributeListParser method parse.

/**
     * Does the actual parsing.
     */
private void parse() {
    int sz = list.size();
    // Skip the count.
    int at = offset + 2;
    ByteArray bytes = cf.getBytes();
    if (observer != null) {
        observer.parsed(bytes, offset, 2, "attributes_count: " + Hex.u2(sz));
    }
    for (int i = 0; i < sz; i++) {
        try {
            if (observer != null) {
                observer.parsed(bytes, at, 0, "\nattributes[" + i + "]:\n");
                observer.changeIndent(1);
            }
            Attribute attrib = attributeFactory.parse(cf, context, at, observer);
            at += attrib.byteLength();
            list.set(i, attrib);
            if (observer != null) {
                observer.changeIndent(-1);
                observer.parsed(bytes, at, 0, "end attributes[" + i + "]\n");
            }
        } catch (ParseException ex) {
            ex.addContext("...while parsing attributes[" + i + "]");
            throw ex;
        } catch (RuntimeException ex) {
            ParseException pe = new ParseException(ex);
            pe.addContext("...while parsing attributes[" + i + "]");
            throw pe;
        }
    }
    endOffset = at;
}