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Diffstat (limited to 'src/proguard/optimize/info/SideEffectMethodFilter.java')
-rw-r--r-- | src/proguard/optimize/info/SideEffectMethodFilter.java | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/src/proguard/optimize/info/SideEffectMethodFilter.java b/src/proguard/optimize/info/SideEffectMethodFilter.java new file mode 100644 index 0000000..52e072a --- /dev/null +++ b/src/proguard/optimize/info/SideEffectMethodFilter.java @@ -0,0 +1,73 @@ +/* + * ProGuard -- shrinking, optimization, obfuscation, and preverification + * of Java bytecode. + * + * Copyright (c) 2002-2013 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.optimize.info; + +import proguard.classfile.*; +import proguard.classfile.visitor.MemberVisitor; + +/** + * This MemberVisitor delegates all its method calls to another MemberVisitor, + * but only for Method objects that are marked as having side effects. + * + * @see SideEffectMethodMarker + * + * @author Eric Lafortune + */ +public class SideEffectMethodFilter +implements MemberVisitor +{ + private final MemberVisitor memberVisitor; + + + /** + * Creates a new SideEffectMethodFilter. + * @param memberVisitor the member visitor to which the visiting will be + * delegated. + */ + public SideEffectMethodFilter(MemberVisitor memberVisitor) + { + this.memberVisitor = memberVisitor; + } + + + // Implementations for MemberVisitor. + + public void visitProgramField(ProgramClass programClass, ProgramField programField) {} + public void visitLibraryField(LibraryClass libraryClass, LibraryField libraryField) {} + + + public void visitProgramMethod(ProgramClass programClass, ProgramMethod programMethod) + { + if (SideEffectMethodMarker.hasSideEffects(programMethod)) + { + memberVisitor.visitProgramMethod(programClass, programMethod); + } + } + + + public void visitLibraryMethod(LibraryClass libraryClass, LibraryMethod libraryMethod) + { + if (SideEffectMethodMarker.hasSideEffects(libraryMethod)) + { + memberVisitor.visitLibraryMethod(libraryClass, libraryMethod); + } + } +}
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