diff options
Diffstat (limited to 'src/proguard/classfile/editor/BootstrapMethodInfoAdder.java')
-rw-r--r-- | src/proguard/classfile/editor/BootstrapMethodInfoAdder.java | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/src/proguard/classfile/editor/BootstrapMethodInfoAdder.java b/src/proguard/classfile/editor/BootstrapMethodInfoAdder.java new file mode 100644 index 0000000..260a561 --- /dev/null +++ b/src/proguard/classfile/editor/BootstrapMethodInfoAdder.java @@ -0,0 +1,86 @@ +/* + * 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.*; +import proguard.classfile.attribute.visitor.BootstrapMethodInfoVisitor; + +/** + * This BootstrapMethodInfoVisitor adds all bootstrap methods that it visits to + * the given target bootstrap methods attribute. + */ +public class BootstrapMethodInfoAdder +implements BootstrapMethodInfoVisitor +{ + private final ConstantAdder constantAdder; + private final BootstrapMethodsAttributeEditor bootstrapMethodsAttributeEditor; + + private int bootstrapMethodIndex; + + + /** + * Creates a new BootstrapMethodInfoAdder that will copy bootstrap methods + * into the given bootstrap methods attribute. + */ + public BootstrapMethodInfoAdder(ProgramClass targetClass, + BootstrapMethodsAttribute targetBootstrapMethodsAttribute) + { + this.constantAdder = new ConstantAdder(targetClass); + this.bootstrapMethodsAttributeEditor = new BootstrapMethodsAttributeEditor(targetBootstrapMethodsAttribute); + } + + + /** + * Returns the index of the most recently added bootstrap method. + */ + public int getBootstrapMethodIndex() + { + return bootstrapMethodIndex; + } + + + // Implementations for BootstrapMethodInfoVisitor. + + public void visitBootstrapMethodInfo(Clazz clazz, BootstrapMethodInfo bootstrapMethodInfo) + { + // Copy the method arguments. + int methodArgumentCount = bootstrapMethodInfo.u2methodArgumentCount; + int[] methodArguments = bootstrapMethodInfo.u2methodArguments; + int[] newMethodArguments = new int[methodArgumentCount]; + + for (int index = 0; index < methodArgumentCount; index++) + { + newMethodArguments[index] = + constantAdder.addConstant(clazz, methodArguments[index]); + } + + // Create a new bootstrap method. + BootstrapMethodInfo newBootstrapMethodInfo = + new BootstrapMethodInfo(constantAdder.addConstant(clazz, bootstrapMethodInfo.u2methodHandleIndex), + methodArgumentCount, + newMethodArguments); + + // Add it to the target. + bootstrapMethodIndex = + bootstrapMethodsAttributeEditor.addBootstrapMethodInfo(newBootstrapMethodInfo); + } +}
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