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Diffstat (limited to 'src/proguard/classfile/util/MemberFinder.java')
| -rw-r--r-- | src/proguard/classfile/util/MemberFinder.java | 197 |
1 files changed, 0 insertions, 197 deletions
diff --git a/src/proguard/classfile/util/MemberFinder.java b/src/proguard/classfile/util/MemberFinder.java deleted file mode 100644 index dc2724e..0000000 --- a/src/proguard/classfile/util/MemberFinder.java +++ /dev/null @@ -1,197 +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.util; - -import proguard.classfile.*; -import proguard.classfile.visitor.*; - -/** - * This class provides methods to find class members in a given class or in its - * hierarchy. - * - * @author Eric Lafortune - */ -public class MemberFinder -extends SimplifiedVisitor -implements MemberVisitor -{ - private static class MemberFoundException extends RuntimeException {} - private static final MemberFoundException MEMBER_FOUND = new MemberFoundException(); - - private Clazz clazz; - private Member member; - - - /** - * Finds the field with the given name and descriptor in the given - * class or its hierarchy. - */ - public Field findField(Clazz referencingClass, - Clazz clazz, - String name, - String descriptor) - { - return (Field)findMember(referencingClass, clazz, name, descriptor, true); - } - - - /** - * Finds the method with the given name and descriptor in the given - * class or its hierarchy. - */ - public Method findMethod(Clazz referencingClass, - Clazz clazz, - String name, - String descriptor) - { - return (Method)findMember(referencingClass, clazz, name, descriptor, false); - } - - - /** - * Finds the class member with the given name and descriptor in the given - * class or its hierarchy. - */ - public Member findMember(Clazz referencingClass, - Clazz clazz, - String name, - String descriptor, - boolean isField) - { - // Organize a search in the hierarchy of superclasses and interfaces. - // The class member may be in a different class, if the code was - // compiled with "-target 1.2" or higher (the default in JDK 1.4). - try - { - this.clazz = null; - this.member = null; - clazz.hierarchyAccept(true, true, true, false, isField ? - (ClassVisitor)new NamedFieldVisitor(name, descriptor, - new MemberClassAccessFilter(referencingClass, this)) : - (ClassVisitor)new NamedMethodVisitor(name, descriptor, - new MemberClassAccessFilter(referencingClass, this))); - } - catch (MemberFoundException ex) - { - // We've found the member we were looking for. - } - - return member; - } - - - /** - * Returns the corresponding class of the most recently found class - * member. - */ - public Clazz correspondingClass() - { - return clazz; - } - - - /** - * Returns whether the given method is overridden anywhere down the class - * hierarchy. - */ - public boolean isOverriden(Clazz clazz, - Method method) - { - String name = method.getName(clazz); - String descriptor = method.getDescriptor(clazz); - - // Go looking for the method down the class hierarchy. - try - { - this.clazz = null; - this.member = null; - - clazz.hierarchyAccept(false, false, false, true, - new NamedMethodVisitor(name, descriptor, - new MemberAccessFilter(0, ClassConstants.ACC_PRIVATE, this))); - } - catch (MemberFoundException ex) - { - // We've found an overriding method. - return true; - } - - return false; - } - - - /** - * Returns whether the given field is shadowed anywhere down the class - * hierarchy. - */ - public boolean isShadowed(Clazz clazz, - Field field) - { - String name = field.getName(clazz); - String descriptor = field.getDescriptor(clazz); - - // Go looking for the field down the class hierarchy. - try - { - this.clazz = null; - this.member = null; - clazz.hierarchyAccept(false, false, false, true, - new NamedFieldVisitor(name, descriptor, - new MemberAccessFilter(0, ClassConstants.ACC_PRIVATE, this))); - } - catch (MemberFoundException ex) - { - // We've found a shadowing field. - return true; - } - - return false; - } - - -// // Implementations for ClassVisitor. -// -// private void visitAnyClass(Clazz clazz) -// { -// if (member == null) -// { -// member = isField ? -// (Member)clazz.findField(name, descriptor) : -// (Member)clazz.findMethod(name, descriptor); -// -// if (member != null) -// { -// this.clazz = clazz; -// } -// } -// } - - - // Implementations for MemberVisitor. - - public void visitAnyMember(Clazz clazz, Member member) - { - this.clazz = clazz; - this.member = member; - - throw MEMBER_FOUND; - } -} |