com.redhat.ceylon.langtools.classfile.LineNumberTable_attribute Maven / Gradle / Ivy
/*
* Copyright (c) 2007, 2008, 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
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*/
package com.redhat.ceylon.langtools.classfile;
import java.io.IOException;
/**
* See JVMS, section 4.8.12.
*
* 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.
*/
public class LineNumberTable_attribute extends Attribute {
LineNumberTable_attribute(ClassReader cr, int name_index, int length) throws IOException {
super(name_index, length);
line_number_table_length = cr.readUnsignedShort();
line_number_table = new Entry[line_number_table_length];
for (int i = 0; i < line_number_table_length; i++)
line_number_table[i] = new Entry(cr);
}
public LineNumberTable_attribute(ConstantPool constant_pool, Entry[] line_number_table)
throws ConstantPoolException {
this(constant_pool.getUTF8Index(Attribute.LineNumberTable), line_number_table);
}
public LineNumberTable_attribute(int name_index, Entry[] line_number_table) {
super(name_index, 2 + line_number_table.length * Entry.length());
this.line_number_table_length = line_number_table.length;
this.line_number_table = line_number_table;
}
public R accept(Visitor visitor, D data) {
return visitor.visitLineNumberTable(this, data);
}
public final int line_number_table_length;
public final Entry[] line_number_table;
public static class Entry {
Entry(ClassReader cr) throws IOException {
start_pc = cr.readUnsignedShort();
line_number = cr.readUnsignedShort();
}
public static int length() {
return 4;
}
public final int start_pc;
public final int line_number;
}
}