jdk8-mips64-public/langtools: src/share/classes/com/sun/tools/classfile/ClassFile.java@d042cba65eab (annotated)

src/share/classes/com/sun/tools/classfile/ClassFile.java@d042cba65eab (annotated)

src/share/classes/com/sun/tools/classfile/ClassFile.java

Tue, 28 May 2013 17:39:41 +0100

author: vromero
date: Tue, 28 May 2013 17:39:41 +0100
changeset 1784: d042cba65eab
parent 972: 694ff82ca68e
child 1863: 8e3d391c88c6
permissions: -rw-r--r--

8012333: javac, ClassFile should have a read(Path) method
Reviewed-by: jjg

 /*
  * Copyright (c) 2007, 2013, 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.File;
 import java.io.FileInputStream;
 import java.io.IOException;
 import java.io.InputStream;
 import java.nio.file.Path;
 import static com.sun.tools.classfile.AccessFlags.*;
 /**
  * See JVMS, section 4.2.
  *
  *  <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 ClassFile {
     public static ClassFile read(File file)
             throws IOException, ConstantPoolException {
         return read(file, new Attribute.Factory());
     }
     public static ClassFile read(Path path)
             throws IOException, ConstantPoolException {
         return read(path.toFile(), new Attribute.Factory());
     }
     public static ClassFile read(File file, Attribute.Factory attributeFactory)
             throws IOException, ConstantPoolException {
         FileInputStream in = new FileInputStream(file);
         try {
             return new ClassFile(in, attributeFactory);
         } finally {
             try {
                 in.close();
             } catch (IOException e) {
                 // ignore
             }
         }
     }
     public static ClassFile read(InputStream in)
             throws IOException, ConstantPoolException {
         return new ClassFile(in, new Attribute.Factory());
     }
     public static ClassFile read(InputStream in, Attribute.Factory attributeFactory)
             throws IOException, ConstantPoolException {
         return new ClassFile(in, attributeFactory);
     }
     ClassFile(InputStream in, Attribute.Factory attributeFactory) throws IOException, ConstantPoolException {
         ClassReader cr = new ClassReader(this, in, attributeFactory);
         magic = cr.readInt();
         minor_version = cr.readUnsignedShort();
         major_version = cr.readUnsignedShort();
         constant_pool = new ConstantPool(cr);
         access_flags = new AccessFlags(cr);
         this_class = cr.readUnsignedShort();
         super_class = cr.readUnsignedShort();
         int interfaces_count = cr.readUnsignedShort();
         interfaces = new int[interfaces_count];
         for (int i = 0; i < interfaces_count; i++)
             interfaces[i] = cr.readUnsignedShort();
         int fields_count = cr.readUnsignedShort();
         fields = new Field[fields_count];
         for (int i = 0; i < fields_count; i++)
             fields[i] = new Field(cr);
         int methods_count = cr.readUnsignedShort();
         methods = new Method[methods_count];
         for (int i = 0; i < methods_count; i++)
             methods[i] = new Method(cr);
         attributes = new Attributes(cr);
     }
     public ClassFile(int magic, int minor_version, int major_version,
             ConstantPool constant_pool, AccessFlags access_flags,
             int this_class, int super_class, int[] interfaces,
             Field[] fields, Method[] methods, Attributes attributes) {
         this.magic = magic;
         this.minor_version = minor_version;
         this.major_version = major_version;
         this.constant_pool = constant_pool;
         this.access_flags = access_flags;
         this.this_class = this_class;
         this.super_class = super_class;
         this.interfaces = interfaces;
         this.fields = fields;
         this.methods = methods;
         this.attributes = attributes;
     }
     public String getName() throws ConstantPoolException {
         return constant_pool.getClassInfo(this_class).getName();
     }
     public String getSuperclassName() throws ConstantPoolException {
         return constant_pool.getClassInfo(super_class).getName();
     }
     public String getInterfaceName(int i) throws ConstantPoolException {
         return constant_pool.getClassInfo(interfaces[i]).getName();
     }
     public Attribute getAttribute(String name) {
         return attributes.get(name);
     }
     public boolean isClass() {
         return !isInterface();
     }
     public boolean isInterface() {
         return access_flags.is(ACC_INTERFACE);
     }
     public int byteLength() {
         return  4 +     // magic
 +     // minor
 +     // major
                 constant_pool.byteLength() +
 +     // access flags
 +     // this_class
 +     // super_class
                 byteLength(interfaces) +
                 byteLength(fields) +
                 byteLength(methods) +
                 attributes.byteLength();
     }
     private int byteLength(int[] indices) {
         return 2 + 2 * indices.length;
     }
     private int byteLength(Field[] fields) {
         int length = 2;
         for (Field f: fields)
             length += f.byteLength();
         return length;
     }
     private int byteLength(Method[] methods) {
         int length = 2;
         for (Method m: methods)
             length += m.byteLength();
         return length;
     }
     public final int magic;
     public final int minor_version;
     public final int major_version;
     public final ConstantPool constant_pool;
     public final AccessFlags access_flags;
     public final int this_class;
     public final int super_class;
     public final int[] interfaces;
     public final Field[] fields;
     public final Method[] methods;
     public final Attributes attributes;
 }

Mercurial > jdk8-mips64-public > langtools / annotate

src/share/classes/com/sun/tools/classfile/ClassFile.java@d042cba65eab (annotated)

src/share/classes/com/sun/tools/classfile/ClassFile.java