1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/rt/javap/src/main/java/org/apidesign/javap/StackMapData.java	Tue Feb 26 16:54:16 2013 +0100
     1.3 @@ -0,0 +1,71 @@
     1.4 +/*
     1.5 + * Copyright (c) 2005, Oracle and/or its affiliates. All rights reserved.
     1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
     1.7 + *
     1.8 + * This code is free software; you can redistribute it and/or modify it
     1.9 + * under the terms of the GNU General Public License version 2 only, as
    1.10 + * published by the Free Software Foundation.  Oracle designates this
    1.11 + * particular file as subject to the "Classpath" exception as provided
    1.12 + * by Oracle in the LICENSE file that accompanied this code.
    1.13 + *
    1.14 + * This code is distributed in the hope that it will be useful, but WITHOUT
    1.15 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
    1.16 + * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
    1.17 + * version 2 for more details (a copy is included in the LICENSE file that
    1.18 + * accompanied this code).
    1.19 + *
    1.20 + * You should have received a copy of the GNU General Public License version
    1.21 + * 2 along with this work; if not, write to the Free Software Foundation,
    1.22 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
    1.23 + *
    1.24 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
    1.25 + * or visit www.oracle.com if you need additional information or have any
    1.26 + * questions.
    1.27 + */
    1.28 +
    1.29 +
    1.30 +package org.apidesign.javap;
    1.31 +
    1.32 +import java.util.*;
    1.33 +import java.io.*;
    1.34 +
    1.35 +import static org.apidesign.javap.RuntimeConstants.*;
    1.36 +
    1.37 +/* represents one entry of StackMap attribute
    1.38 + */
    1.39 +class StackMapData {
    1.40 +    final int offset;
    1.41 +    final int[] locals;
    1.42 +    final int[] stack;
    1.43 +
    1.44 +    StackMapData(int offset, int[] locals, int[] stack) {
    1.45 +        this.offset = offset;
    1.46 +        this.locals = locals;
    1.47 +        this.stack = stack;
    1.48 +    }
    1.49 +
    1.50 +    StackMapData(DataInputStream in, MethodData method) throws IOException {
    1.51 +        offset = in.readUnsignedShort();
    1.52 +        int local_size = in.readUnsignedShort();
    1.53 +        locals = readTypeArray(in, local_size, method);
    1.54 +        int stack_size = in.readUnsignedShort();
    1.55 +        stack = readTypeArray(in, stack_size, method);
    1.56 +    }
    1.57 +
    1.58 +    static final int[] readTypeArray(DataInputStream in, int length, MethodData method) throws IOException {
    1.59 +        int[] types = new int[length];
    1.60 +        for (int i=0; i<length; i++) {
    1.61 +            types[i] = readType(in, method);
    1.62 +        }
    1.63 +        return types;
    1.64 +    }
    1.65 +
    1.66 +    static final int readType(DataInputStream in, MethodData method) throws IOException {
    1.67 +        int type = in.readUnsignedByte();
    1.68 +        if (type == ITEM_Object || type == ITEM_NewObject) {
    1.69 +            type = type | (in.readUnsignedShort()<<8);
    1.70 +        }
    1.71 +        return type;
    1.72 +    }
    1.73 +
    1.74 +}