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/*
* Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package com.sun.tools.classfile;
import java.io.IOException;
/**
* See JVMS3 <TBD>
* http://cr.openjdk.java.net/~jrose/pres/indy-javadoc-mlvm/
*
* <p><b>This is NOT part of any supported API.
* If you write code that depends on this, you do so at your own risk.
* This code and its internal interfaces are subject to change or
* deletion without notice.</b>
*/
public class BootstrapMethods_attribute extends Attribute {
public final BootstrapMethodSpecifier[] bootstrap_method_specifiers;
BootstrapMethods_attribute(ClassReader cr, int name_index, int length)
throws IOException, AttributeException {
super(name_index, length);
int bootstrap_method_count = cr.readUnsignedShort();
bootstrap_method_specifiers = new BootstrapMethodSpecifier[bootstrap_method_count];
for (int i = 0; i < bootstrap_method_specifiers.length; i++)
bootstrap_method_specifiers[i] = new BootstrapMethodSpecifier(cr);
}
public BootstrapMethods_attribute(int name_index, BootstrapMethodSpecifier[] bootstrap_method_specifiers) {
super(name_index, length(bootstrap_method_specifiers));
this.bootstrap_method_specifiers = bootstrap_method_specifiers;
}
public static int length(BootstrapMethodSpecifier[] bootstrap_method_specifiers) {
int n = 2;
for (BootstrapMethodSpecifier b : bootstrap_method_specifiers)
n += b.length();
return n;
}
@Override
public <R, P> R accept(Visitor<R, P> visitor, P p) {
return visitor.visitBootstrapMethods(this, p);
}
public static class BootstrapMethodSpecifier {
public int bootstrap_method_ref;
public int[] bootstrap_arguments;
public BootstrapMethodSpecifier(int bootstrap_method_ref, int[] bootstrap_arguments) {
this.bootstrap_method_ref = bootstrap_method_ref;
this.bootstrap_arguments = bootstrap_arguments;
}
BootstrapMethodSpecifier(ClassReader cr) throws IOException {
bootstrap_method_ref = cr.readUnsignedShort();
int method_count = cr.readUnsignedShort();
bootstrap_arguments = new int[method_count];
for (int i = 0; i < bootstrap_arguments.length; i++) {
bootstrap_arguments[i] = cr.readUnsignedShort();
}
}
int length() {
// u2 (method_ref) + u2 (argc) + u2 * argc
return 2 + 2 + (bootstrap_arguments.length * 2);
}
}
}
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