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Diffstat (limited to 'tools/external/asm/org/objectweb/asm/optimizer/ClassOptimizer.java')
| -rw-r--r-- | tools/external/asm/org/objectweb/asm/optimizer/ClassOptimizer.java | 182 |
1 files changed, 182 insertions, 0 deletions
diff --git a/tools/external/asm/org/objectweb/asm/optimizer/ClassOptimizer.java b/tools/external/asm/org/objectweb/asm/optimizer/ClassOptimizer.java new file mode 100644 index 000000000..153b07ac2 --- /dev/null +++ b/tools/external/asm/org/objectweb/asm/optimizer/ClassOptimizer.java @@ -0,0 +1,182 @@ +/*** + * ASM: a very small and fast Java bytecode manipulation framework + * Copyright (c) 2000-2005 INRIA, France Telecom + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the copyright holders nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF + * THE POSSIBILITY OF SUCH DAMAGE. + */ +package org.objectweb.asm.optimizer; + +import org.objectweb.asm.AnnotationVisitor; +import org.objectweb.asm.Attribute; +import org.objectweb.asm.ClassAdapter; +import org.objectweb.asm.ClassVisitor; +import org.objectweb.asm.FieldVisitor; +import org.objectweb.asm.MethodVisitor; +import org.objectweb.asm.Opcodes; + +/** + * A {@link ClassAdapter} that renames fields and methods, and removes debug + * info. + * + * @author Eric Bruneton + */ +public class ClassOptimizer extends ClassAdapter { + + private NameMapping mapping; + + private String className; + + private String pkgName; + + public ClassOptimizer(final ClassVisitor cv, final NameMapping mapping) { + super(cv); + this.mapping = mapping; + } + + public String getClassName() { + return className; + } + + // ------------------------------------------------------------------------ + // Overriden methods + // ------------------------------------------------------------------------ + + public void visit( + final int version, + final int access, + final String name, + final String signature, + final String superName, + final String[] interfaces) + { + className = name; + pkgName = name.substring(0, name.lastIndexOf('/')); + cv.visit(version, + access, + mapping.map(name), + null, + mapping.map(superName), + interfaces); + } + + public void visitSource(final String source, final String debug) { + // remove debug info + } + + public void visitOuterClass( + final String owner, + final String name, + final String desc) + { + // remove debug info + } + + public AnnotationVisitor visitAnnotation( + final String desc, + final boolean visible) + { + throw new UnsupportedOperationException(); + } + + public void visitAttribute(final Attribute attr) { + // remove non standard attribute + } + + public void visitInnerClass( + final String name, + final String outerName, + final String innerName, + final int access) + { + // remove debug info + } + + public FieldVisitor visitField( + final int access, + final String name, + final String desc, + final String signature, + final Object value) + { + String s = className + "." + name; + if ((access & (Opcodes.ACC_PUBLIC | Opcodes.ACC_PROTECTED)) == 0) { + if ((access & Opcodes.ACC_FINAL) != 0 + && (access & Opcodes.ACC_STATIC) != 0 && desc.equals("I")) + { + return null; + } + if (pkgName.equals("org/objectweb/asm") + && mapping.map(s).equals(name)) + { + System.out.println("INFO: " + s + " could be renamed"); + } + cv.visitField(access, + mapping.map(s), + mapping.fix(desc), + null, + value); + } else { + if (!mapping.map(s).equals(name)) { + throw new RuntimeException("The public or protected field " + s + + " must not be renamed."); + } + cv.visitField(access, name, desc, null, value); + } + return null; // remove debug info + } + + public MethodVisitor visitMethod( + final int access, + final String name, + final String desc, + final String signature, + final String[] exceptions) + { + String s = className + "." + name + desc; + if ((access & (Opcodes.ACC_PUBLIC | Opcodes.ACC_PROTECTED)) == 0) { + if (pkgName.equals("org/objectweb/asm") && !name.startsWith("<") + && mapping.map(s).equals(name)) + { + System.out.println("INFO: " + s + " could be renamed"); + } + return new MethodOptimizer(cv.visitMethod(access, + mapping.map(s), + mapping.fix(desc), + null, + exceptions), mapping); + } else { + if (!mapping.map(s).equals(name)) { + throw new RuntimeException("The public or protected method " + + s + " must not be renamed."); + } + return new MethodOptimizer(cv.visitMethod(access, + name, + desc, + null, + exceptions), mapping); + } + } +} |