diff options
Diffstat (limited to 'src/proguard/classfile/editor/ExceptionInfoAdder.java')
| -rw-r--r-- | src/proguard/classfile/editor/ExceptionInfoAdder.java | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/src/proguard/classfile/editor/ExceptionInfoAdder.java b/src/proguard/classfile/editor/ExceptionInfoAdder.java new file mode 100644 index 0000000..e0cc9c5 --- /dev/null +++ b/src/proguard/classfile/editor/ExceptionInfoAdder.java @@ -0,0 +1,67 @@ +/* + * ProGuard -- shrinking, optimization, obfuscation, and preverification + * of Java bytecode. + * + * Copyright (c) 2002-2009 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.*; +import proguard.classfile.attribute.visitor.ExceptionInfoVisitor; + +/** + * This ExceptionInfoVisitor adds all exception information that it visits to + * the given target code attribute. + * + * @author Eric Lafortune + */ +public class ExceptionInfoAdder +implements ExceptionInfoVisitor +{ + private final ConstantAdder constantAdder; + private final CodeAttributeComposer codeAttributeComposer; + + + /** + * Creates a new ExceptionAdder that will copy exceptions into the given + * target code attribute. + */ + public ExceptionInfoAdder(ProgramClass targetClass, + CodeAttributeComposer targetComposer) + { + constantAdder = new ConstantAdder(targetClass); + codeAttributeComposer = targetComposer; + } + + + // Implementations for ExceptionInfoVisitor. + + public void visitExceptionInfo(Clazz clazz, Method method, CodeAttribute codeAttribute, ExceptionInfo exceptionInfo) + { + // Create a copy of the exception info. + ExceptionInfo newExceptionInfo = + new ExceptionInfo(exceptionInfo.u2startPC, + exceptionInfo.u2endPC, + exceptionInfo.u2handlerPC, + exceptionInfo.u2catchType == 0 ? 0 : + constantAdder.addConstant(clazz, exceptionInfo.u2catchType)); + + // Add the completed exception info. + codeAttributeComposer.appendException(newExceptionInfo); + } +}
\ No newline at end of file |