summaryrefslogtreecommitdiff
path: root/src/proguard/classfile/editor/MemberAdder.java
diff options
context:
space:
mode:
Diffstat (limited to 'src/proguard/classfile/editor/MemberAdder.java')
-rw-r--r--src/proguard/classfile/editor/MemberAdder.java294
1 files changed, 0 insertions, 294 deletions
diff --git a/src/proguard/classfile/editor/MemberAdder.java b/src/proguard/classfile/editor/MemberAdder.java
deleted file mode 100644
index 2a93016..0000000
--- a/src/proguard/classfile/editor/MemberAdder.java
+++ /dev/null
@@ -1,294 +0,0 @@
-/*
- * ProGuard -- shrinking, optimization, obfuscation, and preverification
- * of Java bytecode.
- *
- * Copyright (c) 2002-2014 Eric Lafortune (eric@graphics.cornell.edu)
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the Free
- * Software Foundation; either version 2 of the License, or (at your option)
- * any later version.
- *
- * This program 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 for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-package proguard.classfile.editor;
-
-import proguard.classfile.*;
-import proguard.classfile.attribute.Attribute;
-import proguard.classfile.util.SimplifiedVisitor;
-import proguard.classfile.visitor.MemberVisitor;
-
-/**
- * This MemberVisitor copies all class members that it visits to the given
- * target class. Their visitor info is set to the class members from which they
- * were copied.
- *
- * @author Eric Lafortune
- */
-public class MemberAdder
-extends SimplifiedVisitor
-implements MemberVisitor
-{
- //*
- private static final boolean DEBUG = false;
- /*/
- private static boolean DEBUG = true;
- //*/
-
-
- private static final Attribute[] EMPTY_ATTRIBUTES = new Attribute[0];
-
-
- private final ProgramClass targetClass;
-// private final boolean addFields;
- private final MemberVisitor extraMemberVisitor;
-
- private final ConstantAdder constantAdder;
- private final ClassEditor classEditor;
- private final ConstantPoolEditor constantPoolEditor;
-
-
- /**
- * Creates a new MemberAdder that will copy methods into the given target
- * class.
- * @param targetClass the class to which all visited class members will be
- * added.
- */
- public MemberAdder(ProgramClass targetClass)
- {
- this(targetClass, null);
- }
-
-
- /**
- * Creates a new MemberAdder that will copy methods into the given target
- * class.
- * @param targetClass the class to which all visited class members
- * will be added.
- * @param extraMemberVisitor an optional member visitor that visits each
- * new member right after it has been added. This
- * allows changing the visitor info, for instance.
- */
-// * @param addFields specifies whether fields should be added, or fused
-// * with the present fields.
- public MemberAdder(ProgramClass targetClass,
-// boolean addFields,
- MemberVisitor extraMemberVisitor)
- {
- this.targetClass = targetClass;
-// this.addFields = addFields;
- this.extraMemberVisitor = extraMemberVisitor;
-
- constantAdder = new ConstantAdder(targetClass);
- classEditor = new ClassEditor(targetClass);
- constantPoolEditor = new ConstantPoolEditor(targetClass);
- }
-
-
- // Implementations for MemberVisitor.
-
- public void visitProgramField(ProgramClass programClass, ProgramField programField)
- {
- //String name = programField.getName(programClass);
- //String descriptor = programField.getDescriptor(programClass);
- int accessFlags = programField.getAccessFlags();
-
- // TODO: Handle field with the same name and descriptor in the target class.
- // We currently avoid this case, since renaming the identical field
- // still causes confused field references.
- //// Does the target class already have such a field?
- //ProgramField targetField = (ProgramField)targetClass.findField(name, descriptor);
- //if (targetField != null)
- //{
- // // Is the field private or static?
- // int targetAccessFlags = targetField.getAccessFlags();
- // if ((targetAccessFlags &
- // (ClassConstants.ACC_PRIVATE |
- // ClassConstants.ACC_STATIC)) != 0)
- // {
- // if (DEBUG)
- // {
- // System.out.println("MemberAdder: renaming field ["+targetClass+"."+targetField.getName(targetClass)+" "+targetField.getDescriptor(targetClass)+"]");
- // }
- //
- // // Rename the private or static field.
- // targetField.u2nameIndex =
- // constantPoolEditor.addUtf8Constant(newUniqueMemberName(name, targetClass.getName()));
- // }
- // else
- // {
- // // Keep the non-private and non-static field, but update its
- // // contents, in order to keep any references to it valid.
- // if (DEBUG)
- // {
- // System.out.println("MemberAdder: updating field ["+programClass+"."+programField.getName(programClass)+" "+programField.getDescriptor(programClass)+"] into ["+targetClass.getName()+"]");
- // }
- //
- // // Combine the access flags.
- // targetField.u2accessFlags = accessFlags | targetAccessFlags;
- //
- // // Add and replace any attributes.
- // programField.attributesAccept(programClass,
- // new AttributeAdder(targetClass,
- // targetField,
- // true));
- //
- // // Don't add a new field.
- // return;
- // }
- //}
-
- if (DEBUG)
- {
- System.out.println("MemberAdder: copying field ["+programClass+"."+programField.getName(programClass)+" "+programField.getDescriptor(programClass)+"] into ["+targetClass.getName()+"]");
- }
-
- // Create a copy of the field.
- ProgramField newProgramField =
- new ProgramField(accessFlags,
- constantAdder.addConstant(programClass, programField.u2nameIndex),
- constantAdder.addConstant(programClass, programField.u2descriptorIndex),
- 0,
- programField.u2attributesCount > 0 ?
- new Attribute[programField.u2attributesCount] :
- EMPTY_ATTRIBUTES,
- programField.referencedClass);
-
- // Link to its visitor info.
- newProgramField.setVisitorInfo(programField);
-
- // Copy its attributes.
- programField.attributesAccept(programClass,
- new AttributeAdder(targetClass,
- newProgramField,
- false));
-
- // Add the completed field.
- classEditor.addField(newProgramField);
-
- // Visit the newly added field, if necessary.
- if (extraMemberVisitor != null)
- {
- extraMemberVisitor.visitProgramField(targetClass, newProgramField);
- }
- }
-
-
- public void visitProgramMethod(ProgramClass programClass, ProgramMethod programMethod)
- {
- String name = programMethod.getName(programClass);
- String descriptor = programMethod.getDescriptor(programClass);
- int accessFlags = programMethod.getAccessFlags();
-
- // Does the target class already have such a method?
- ProgramMethod targetMethod = (ProgramMethod)targetClass.findMethod(name, descriptor);
- if (targetMethod != null)
- {
- // is this source method abstract?
- if ((accessFlags & ClassConstants.ACC_ABSTRACT) != 0)
- {
- // Keep the target method.
- if (DEBUG)
- {
- System.out.println("MemberAdder: skipping abstract method ["+programClass.getName()+"."+programMethod.getName(programClass)+programMethod.getDescriptor(programClass)+"] into ["+targetClass.getName()+"]");
- }
-
- // Don't add a new method.
- return;
- }
-
- // Is the target method abstract?
- int targetAccessFlags = targetMethod.getAccessFlags();
- if ((targetAccessFlags & ClassConstants.ACC_ABSTRACT) != 0)
- {
- // Keep the abstract method, but update its contents, in order
- // to keep any references to it valid.
- if (DEBUG)
- {
- System.out.println("MemberAdder: updating method ["+programClass.getName()+"."+programMethod.getName(programClass)+programMethod.getDescriptor(programClass)+"] into ["+targetClass.getName()+"]");
- }
-
- // Replace the access flags.
- targetMethod.u2accessFlags =
- accessFlags & ~ClassConstants.ACC_FINAL;
-
- // Add and replace the attributes.
- programMethod.attributesAccept(programClass,
- new AttributeAdder(targetClass,
- targetMethod,
- true));
-
- // Don't add a new method.
- return;
- }
-
- if (DEBUG)
- {
- System.out.println("MemberAdder: renaming method ["+targetClass.getName()+"."+targetMethod.getName(targetClass)+targetMethod.getDescriptor(targetClass)+"]");
- }
-
- // TODO: Handle non-abstract method with the same name and descriptor in the target class.
- // We currently avoid this case, since renaming the identical method
- // still causes confused method references.
- //// Rename the private (non-abstract) or static method.
- //targetMethod.u2nameIndex =
- // constantPoolEditor.addUtf8Constant(newUniqueMemberName(name, descriptor));
- }
-
- if (DEBUG)
- {
- System.out.println("MemberAdder: copying method ["+programClass.getName()+"."+programMethod.getName(programClass)+programMethod.getDescriptor(programClass)+"] into ["+targetClass.getName()+"]");
- }
-
- // Create a copy of the method.
- ProgramMethod newProgramMethod =
- new ProgramMethod(accessFlags & ~ClassConstants.ACC_FINAL,
- constantAdder.addConstant(programClass, programMethod.u2nameIndex),
- constantAdder.addConstant(programClass, programMethod.u2descriptorIndex),
- 0,
- programMethod.u2attributesCount > 0 ?
- new Attribute[programMethod.u2attributesCount] :
- EMPTY_ATTRIBUTES,
- programMethod.referencedClasses != null ?
- (Clazz[])programMethod.referencedClasses.clone() :
- null);
-
- // Link to its visitor info.
- newProgramMethod.setVisitorInfo(programMethod);
-
- // Copy its attributes.
- programMethod.attributesAccept(programClass,
- new AttributeAdder(targetClass,
- newProgramMethod,
- false));
-
- // Add the completed method.
- classEditor.addMethod(newProgramMethod);
-
- // Visit the newly added method, if necessary.
- if (extraMemberVisitor != null)
- {
- extraMemberVisitor.visitProgramMethod(targetClass, newProgramMethod);
- }
- }
-
-
- // Small utility methods.
-
- /**
- * Returns a unique class member name, based on the given name and descriptor.
- */
- private String newUniqueMemberName(String name, String descriptor)
- {
- return name.equals(ClassConstants.METHOD_NAME_INIT) ?
- ClassConstants.METHOD_NAME_INIT :
- name + ClassConstants.SPECIAL_MEMBER_SEPARATOR + Long.toHexString(Math.abs((descriptor).hashCode()));
- }
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-14 13:08:16 +0000