diff options
author | Alexander Kriegisch <Alexander@Kriegisch.name> | 2024-03-15 13:41:59 +0100 |
---|---|---|
committer | Alexander Kriegisch <Alexander@Kriegisch.name> | 2024-03-15 19:27:30 +0100 |
commit | 17795394ff051ddfe02d717f6df327e63835a270 (patch) | |
tree | 3c618e5c1800356dc77ff92041481b2cab028cc7 /bcel-builder/verifier-src/org/aspectj/apache/bcel/verifier/util | |
parent | 9df260e17a040b03cdb9b8451e022f6d88eb83d5 (diff) | |
download | aspectj-17795394ff051ddfe02d717f6df327e63835a270.tar.gz aspectj-17795394ff051ddfe02d717f6df327e63835a270.zip |
Remove bcel-builder/verifier-src
It looks as if the source code is never built and never used either.
Signed-off-by: Alexander Kriegisch <Alexander@Kriegisch.name>
Diffstat (limited to 'bcel-builder/verifier-src/org/aspectj/apache/bcel/verifier/util')
3 files changed, 0 insertions, 1147 deletions
diff --git a/bcel-builder/verifier-src/org/aspectj/apache/bcel/verifier/util/BCELFactory.java b/bcel-builder/verifier-src/org/aspectj/apache/bcel/verifier/util/BCELFactory.java deleted file mode 100644 index 0b7912bc0..000000000 --- a/bcel-builder/verifier-src/org/aspectj/apache/bcel/verifier/util/BCELFactory.java +++ /dev/null @@ -1,366 +0,0 @@ -package org.aspectj.apache.bcel.verifier.util; - -import java.io.PrintWriter; -import java.util.ArrayList; -import java.util.HashMap; -import java.util.Iterator; - -import org.aspectj.apache.bcel.Constants; -import org.aspectj.apache.bcel.classfile.ConstantPool; -import org.aspectj.apache.bcel.classfile.Utility; -import org.aspectj.apache.bcel.generic.BranchHandle; -import org.aspectj.apache.bcel.generic.CodeExceptionGen; -import org.aspectj.apache.bcel.generic.FieldInstruction; -import org.aspectj.apache.bcel.generic.IINC; -import org.aspectj.apache.bcel.generic.Instruction; -import org.aspectj.apache.bcel.generic.InstructionBranch; -import org.aspectj.apache.bcel.generic.InstructionByte; -import org.aspectj.apache.bcel.generic.InstructionCP; -import org.aspectj.apache.bcel.generic.InstructionConstants; -import org.aspectj.apache.bcel.generic.InstructionHandle; -import org.aspectj.apache.bcel.generic.InstructionSelect; -import org.aspectj.apache.bcel.generic.InvokeInstruction; -import org.aspectj.apache.bcel.generic.MULTIANEWARRAY; -import org.aspectj.apache.bcel.generic.MethodGen; -import org.aspectj.apache.bcel.generic.ObjectType; -import org.aspectj.apache.bcel.generic.RET; -import org.aspectj.apache.bcel.generic.Type; -import org.aspectj.apache.bcel.verifier.InstructionWalker; - -/* ==================================================================== - * The Apache Software License, Version 1.1 - * - * Copyright (c) 2002 The Apache Software Foundation. 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. The end-user documentation included with the redistribution, - * if any, must include the following acknowledgment: - * "This product includes software developed by the - * Apache Software Foundation (https://www.apache.org/)." - * Alternately, this acknowledgment may appear in the software itself, - * if and wherever such third-party acknowledgments normally appear. - * - * 4. The names "Apache" and "Apache Software Foundation" and - * "Apache BCEL" must not be used to endorse or promote products - * derived from this software without prior written permission. For - * written permission, please contact apache@apache.org. - * - * 5. Products derived from this software may not be called "Apache", - * "Apache BCEL", nor may "Apache" appear in their name, without - * prior written permission of the Apache Software Foundation. - * - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 APACHE SOFTWARE FOUNDATION OR - * ITS 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. - * ==================================================================== - * - * This software consists of voluntary contributions made by many - * individuals on behalf of the Apache Software Foundation. For more - * information on the Apache Software Foundation, please see - * <https://www.apache.org/>. - */ - -/** - * Factory creates il.append() statements, and sets instruction targets. A helper class for BCELifier. - * - * @see BCELifier - * @version $Id: BCELFactory.java,v 1.6 2009/09/14 20:29:10 aclement Exp $ - * @author <A HREF="mailto:markus.dahm@berlin.de">M. Dahm</A> - */ -class BCELFactory extends org.aspectj.apache.bcel.verifier.EmptyInstVisitor { - private final MethodGen _mg; - private final PrintWriter _out; - private final ConstantPool _cp; - - BCELFactory(MethodGen mg, PrintWriter out) { - _mg = mg; - _cp = mg.getConstantPool(); - _out = out; - } - - private final HashMap<Instruction, InstructionHandle> branch_map = new HashMap<Instruction, InstructionHandle>(); // Map<Instruction, - // InstructionHandle> - - public void start() { - if (!_mg.isAbstract() && !_mg.isNative()) { - for (InstructionHandle ih = _mg.getInstructionList().getStart(); ih != null; ih = ih.getNext()) { - Instruction i = ih.getInstruction(); - - if (i instanceof InstructionBranch) { - branch_map.put(i, ih); // memorize container - } - - if (ih.hasTargeters()) { - if (i instanceof InstructionBranch) { - _out.println(" InstructionHandle ih_" + ih.getPosition() + ";"); - } else { - _out.print(" InstructionHandle ih_" + ih.getPosition() + " = "); - } - } else { - _out.print(" "); - } - - if (!visitInstruction(i)) { - InstructionWalker.accept(i, this); - } - } - - updateBranchTargets(); - updateExceptionHandlers(); - } - } - - private boolean visitInstruction(Instruction i) { - short opcode = i.getOpcode(); - - if (InstructionConstants.INSTRUCTIONS[opcode] != null && !i.isConstantInstruction() && !i.isReturnInstruction()) { // Handled - // below - _out.println("il.append(InstructionConstants." + i.getName().toUpperCase() + ");"); - return true; - } - - return false; - } - - public void visitLocalVariableInstruction(Instruction i) { - short opcode = i.getOpcode(); - Type type = i.getType(_cp); - - if (opcode == Constants.IINC) { - _out.println("il.append(new IINC(" + i.getIndex() + ", " + ((IINC) i).getIncrement() + "));"); - } else { - String kind = opcode < Constants.ISTORE ? "Load" : "Store"; - _out.println("il.append(_factory.create" + kind + "(" + BCELifier.printType(type) + ", " + i.getIndex() + "));"); - } - } - - @Override - public void visitArrayInstruction(Instruction i) { - short opcode = i.getOpcode(); - Type type = i.getType(_cp); - String kind = opcode < Constants.IASTORE ? "Load" : "Store"; - - _out.println("il.append(_factory.createArray" + kind + "(" + BCELifier.printType(type) + "));"); - } - - public void visitFieldInstruction(FieldInstruction i) { - short opcode = i.getOpcode(); - - String class_name = i.getClassName(_cp); - String field_name = i.getFieldName(_cp); - Type type = i.getFieldType(_cp); - - _out.println("il.append(_factory.createFieldAccess(\"" + class_name + "\", \"" + field_name + "\", " - + BCELifier.printType(type) + ", " + "Constants." + Constants.OPCODE_NAMES[opcode].toUpperCase() + "));"); - } - - @Override - public void visitInvokeInstruction(InvokeInstruction i) { - short opcode = i.getOpcode(); - String class_name = i.getClassName(_cp); - String method_name = i.getMethodName(_cp); - Type type = i.getReturnType(_cp); - Type[] arg_types = i.getArgumentTypes(_cp); - - _out.println("il.append(_factory.createInvoke(\"" + class_name + "\", \"" + method_name + "\", " - + BCELifier.printType(type) + ", " + BCELifier.printArgumentTypes(arg_types) + ", " + "Constants." - + Constants.OPCODE_NAMES[opcode].toUpperCase() + "));"); - } - - @Override - public void visitAllocationInstruction(Instruction i) { - Type type; - - if (i.isConstantPoolInstruction()) { - type = ((InstructionCP) i).getType(_cp); - } else { - type = ((InstructionByte) i).getType(); - } - - short opcode = i.getOpcode(); - int dim = 1; - - switch (opcode) { - case Constants.NEW: - _out.println("il.append(_factory.createNew(\"" + ((ObjectType) type).getClassName() + "\"));"); - break; - - case Constants.MULTIANEWARRAY: - dim = ((MULTIANEWARRAY) i).getDimensions(); - case Constants.ANEWARRAY: - case Constants.NEWARRAY: - _out.println("il.append(_factory.createNewArray(" + BCELifier.printType(type) + ", (short) " + dim + "));"); - break; - - default: - throw new RuntimeException("Oops: " + opcode); - } - } - - private void createConstant(Object value) { - String embed = value.toString(); - - if (value instanceof String) { - embed = '"' + Utility.convertString(value.toString()) + '"'; - } else if (value instanceof Character) { - embed = "(char)0x" + Integer.toHexString(((Character) value).charValue()); - } - - _out.println("il.append(new PUSH(_cp, " + embed + "));"); - } - - @Override - public void visitLDC(Instruction i) { - createConstant(i.getValue(_cp)); - } - - @Override - public void visitLDC2_W(Instruction i) { - createConstant(i.getValue(_cp)); - } - - @Override - public void visitConstantPushInstruction(Instruction i) { - createConstant(i.getValue()); - } - - @Override - public void visitINSTANCEOF(Instruction i) { - Type type = i.getType(_cp); - - _out.println("il.append(new INSTANCEOF(_cp.addClass(" + BCELifier.printType(type) + ")));"); - } - - @Override - public void visitCHECKCAST(Instruction i) { - Type type = i.getType(_cp); - - _out.println("il.append(_factory.createCheckCast(" + BCELifier.printType(type) + "));"); - } - - @Override - public void visitReturnInstruction(Instruction i) { - Type type = i.getType(_cp); - - _out.println("il.append(_factory.createReturn(" + BCELifier.printType(type) + "));"); - } - - // Memorize BranchInstructions that need an update - private final ArrayList<InstructionBranch> branches = new ArrayList<InstructionBranch>(); - - @Override - public void visitBranchInstruction(InstructionBranch bi) { - BranchHandle bh = (BranchHandle) branch_map.get(bi); - int pos = bh.getPosition(); - String name = bi.getName() + "_" + pos; - - if (bi instanceof InstructionSelect) { - InstructionSelect s = (InstructionSelect) bi; - branches.add(bi); - - StringBuffer args = new StringBuffer("new int[] { "); - int[] matchs = s.getMatchs(); - - for (int i = 0; i < matchs.length; i++) { - args.append(matchs[i]); - - if (i < matchs.length - 1) { - args.append(", "); - } - } - - args.append(" }"); - - _out.print(" Select " + name + " = new " + bi.getName().toUpperCase() + "(" + args + ", new InstructionHandle[] { "); - - for (int i = 0; i < matchs.length; i++) { - _out.print("null"); - - if (i < matchs.length - 1) { - _out.print(", "); - } - } - - _out.println(");"); - } else { - int t_pos = bh.getTarget().getPosition(); - String target; - - if (pos > t_pos) { - target = "ih_" + t_pos; - } else { - branches.add(bi); - target = "null"; - } - - _out.println(" BranchInstruction " + name + " = _factory.createBranchInstruction(" + "Constants." - + bi.getName().toUpperCase() + ", " + target + ");"); - } - - if (bh.hasTargeters()) { - _out.println(" ih_" + pos + " = il.append(" + name + ");"); - } else { - _out.println(" il.append(" + name + ");"); - } - } - - @Override - public void visitRET(RET i) { - _out.println("il.append(new RET(" + i.getIndex() + ")));"); - } - - private void updateBranchTargets() { - for (Iterator<InstructionBranch> i = branches.iterator(); i.hasNext();) { - InstructionBranch bi = i.next(); - BranchHandle bh = (BranchHandle) branch_map.get(bi); - int pos = bh.getPosition(); - String name = bi.getName() + "_" + pos; - int t_pos = bh.getTarget().getPosition(); - - _out.println(" " + name + ".setTarget(ih_" + t_pos + ");"); - - if (bi instanceof InstructionSelect) { - InstructionHandle[] ihs = ((InstructionSelect) bi).getTargets(); - - for (int j = 0; j < ihs.length; j++) { - t_pos = ihs[j].getPosition(); - - _out.println(" " + name + ".setTarget(" + j + ", ih_" + t_pos + ");"); - } - } - } - } - - private void updateExceptionHandlers() { - CodeExceptionGen[] handlers = _mg.getExceptionHandlers(); - - for (int i = 0; i < handlers.length; i++) { - CodeExceptionGen h = handlers[i]; - String type = h.getCatchType() == null ? "null" : BCELifier.printType(h.getCatchType()); - - _out.println(" method.addExceptionHandler(" + "ih_" + h.getStartPC().getPosition() + ", " + "ih_" - + h.getEndPC().getPosition() + ", " + "ih_" + h.getHandlerPC().getPosition() + ", " + type + ");"); - } - } -} diff --git a/bcel-builder/verifier-src/org/aspectj/apache/bcel/verifier/util/BCELifier.java b/bcel-builder/verifier-src/org/aspectj/apache/bcel/verifier/util/BCELifier.java deleted file mode 100644 index 0e2eddb00..000000000 --- a/bcel-builder/verifier-src/org/aspectj/apache/bcel/verifier/util/BCELifier.java +++ /dev/null @@ -1,341 +0,0 @@ -package org.aspectj.apache.bcel.verifier.util; - -/* ==================================================================== - * The Apache Software License, Version 1.1 - * - * Copyright (c) 2002 The Apache Software Foundation. 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. The end-user documentation included with the redistribution, - * if any, must include the following acknowledgment: - * "This product includes software developed by the - * Apache Software Foundation (https://www.apache.org/)." - * Alternately, this acknowledgment may appear in the software itself, - * if and wherever such third-party acknowledgments normally appear. - * - * 4. The names "Apache" and "Apache Software Foundation" and - * "Apache BCEL" must not be used to endorse or promote products - * derived from this software without prior written permission. For - * written permission, please contact apache@apache.org. - * - * 5. Products derived from this software may not be called "Apache", - * "Apache BCEL", nor may "Apache" appear in their name, without - * prior written permission of the Apache Software Foundation. - * - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 APACHE SOFTWARE FOUNDATION OR - * ITS 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. - * ==================================================================== - * - * This software consists of voluntary contributions made by many - * individuals on behalf of the Apache Software Foundation. For more - * information on the Apache Software Foundation, please see - * <https://www.apache.org/>. - */ -import java.io.OutputStream; -import java.io.PrintWriter; - -import org.aspectj.apache.bcel.Constants; -import org.aspectj.apache.bcel.Repository; -import org.aspectj.apache.bcel.classfile.ClassParser; -import org.aspectj.apache.bcel.classfile.ConstantValue; -import org.aspectj.apache.bcel.classfile.Field; -import org.aspectj.apache.bcel.classfile.JavaClass; -import org.aspectj.apache.bcel.classfile.Method; -import org.aspectj.apache.bcel.classfile.Utility; -import org.aspectj.apache.bcel.generic.ArrayType; -import org.aspectj.apache.bcel.classfile.ConstantPool; -import org.aspectj.apache.bcel.generic.MethodGen; -import org.aspectj.apache.bcel.generic.Type; - -/** - * This class takes a given JavaClass object and converts it to a - * Java program that creates that very class using BCEL. This - * gives new users of BCEL a useful example showing how things - * are done with BCEL. It does not cover all features of BCEL, - * but tries to mimic hand-written code as close as possible. - * - * @version $Id: BCELifier.java,v 1.2 2008/05/28 23:53:04 aclement Exp $ - * @author <A HREF="mailto:markus.dahm@berlin.de">M. Dahm</A> - */ -public class BCELifier extends org.aspectj.apache.bcel.verifier.EmptyClassVisitor { - private JavaClass _clazz; - private PrintWriter _out; - private ConstantPool _cp; - - /** @param clazz Java class to "decompile" - * @param out where to output Java program - */ - public BCELifier(JavaClass clazz, OutputStream out) { - _clazz = clazz; - _out = new PrintWriter(out); - _cp = new ConstantPool(_clazz.getConstantPool().getConstantPool()); - } - - /** Start Java code generation - */ - public void start() { - visitJavaClass(_clazz); - _out.flush(); - } - - public void visitJavaClass(JavaClass clazz) { - String class_name = clazz.getClassName(); - String super_name = clazz.getSuperclassName(); - String package_name = clazz.getPackageName(); - String inter = BCELifier.printArray(clazz.getInterfaceNames(), - false, true); - if(!"".equals(package_name)) { - class_name = class_name.substring(package_name.length() + 1); - _out.println("package " + package_name + ";\n"); - } - - _out.println("import org.aspectj.apache.bcel.generic.*;"); - _out.println("import org.aspectj.apache.bcel.classfile.*;"); - _out.println("import org.aspectj.apache.bcel.*;"); - _out.println("import java.io.*;\n"); - - _out.println("public class " + class_name + "Creator implements Constants {"); - _out.println(" private InstructionFactory _factory;"); - _out.println(" private ConstantPoolGen _cp;"); - _out.println(" private ClassGen _cg;\n"); - - _out.println(" public " + class_name + "Creator() {"); - _out.println(" _cg = new ClassGen(\"" + - (("".equals(package_name))? class_name : - package_name + "." + class_name) + - "\", \"" + super_name + "\", " + - "\"" + clazz.getSourceFileName() + "\", " + - printFlags(clazz.getModifiers(), true) + ", " + - "new String[] { " + inter + " });\n"); - - _out.println(" _cp = _cg.getConstantPool();"); - _out.println(" _factory = new InstructionFactory(_cg, _cp);"); - _out.println(" }\n"); - - printCreate(); - - Field[] fields = clazz.getFields(); - - if(fields.length > 0) { - _out.println(" private void createFields() {"); - _out.println(" FieldGen field;"); - - for(int i=0; i < fields.length; i++) { - fields[i].accept(this); - } - - _out.println(" }\n"); - } - - Method[] methods = clazz.getMethods(); - - for(int i=0; i < methods.length; i++) { - _out.println(" private void createMethod_" + i + "() {"); - - methods[i].accept(this); - _out.println(" }\n"); - } - - printMain(); - _out.println("}"); - } - - private void printCreate() { - _out.println(" public void create(OutputStream out) throws IOException {"); - - Field[] fields = _clazz.getFields(); - if(fields.length > 0) { - _out.println(" createFields();"); - } - - Method[] methods = _clazz.getMethods(); - for(int i=0; i < methods.length; i++) { - _out.println(" createMethod_" + i + "();"); - } - - _out.println(" _cg.getJavaClass().dump(out);"); - - _out.println(" }\n"); - } - - private void printMain() { - String class_name = _clazz.getClassName(); - - _out.println(" public static void main(String[] args) throws Exception {"); - _out.println(" " + class_name + "Creator creator = new " + - class_name + "Creator();"); - _out.println(" creator.create(new FileOutputStream(\"" + class_name + - ".class\"));"); - _out.println(" }"); - } - - public void visitField(Field field) { - _out.println("\n field = new FieldGen(" + - printFlags(field.getModifiers()) + - ", " + printType(field.getSignature()) + ", \"" + - field.getName() + "\", _cp);"); - - ConstantValue cv = field.getConstantValue(); - - if(cv != null) { - String value = cv.toString(); - _out.println(" field.setInitValue(" + value + ")"); - } - - _out.println(" _cg.addField(field.getField());"); - } - - public void visitMethod(Method method) { - MethodGen mg = new MethodGen(method, _clazz.getClassName(), _cp); - - Type result_type = mg.getReturnType(); - Type[] arg_types = mg.getArgumentTypes(); - - _out.println(" InstructionList il = new InstructionList();"); - _out.println(" MethodGen method = new MethodGen(" + - printFlags(method.getModifiers()) + - ", " + printType(result_type) + - ", " + printArgumentTypes(arg_types) + ", " + - "new String[] { " + - BCELifier.printArray(mg.getArgumentNames(), false, true) + - " }, \"" + method.getName() + "\", \"" + - _clazz.getClassName() + "\", il, _cp);\n"); - - BCELFactory factory = new BCELFactory(mg, _out); - factory.start(); - - _out.println(" method.setMaxStack();"); - _out.println(" method.setMaxLocals();"); - _out.println(" _cg.addMethod(method.getMethod());"); - _out.println(" il.dispose();"); - } - - public static final String printArray(Object[] obj, boolean braces, - boolean quote) { - if(obj == null) - return null; - - StringBuffer buf = new StringBuffer(); - if(braces) - buf.append('{'); - - for(int i=0; i < obj.length; i++) { - if(obj[i] != null) { - buf.append((quote? "\"" : "") + obj[i].toString() + (quote? "\"" : "")); - } else { - buf.append("null"); - } - - if(i < obj.length - 1) { - buf.append(", "); - } - } - - if(braces) - buf.append('}'); - - return buf.toString(); - } - -static String printFlags(int flags) { - return printFlags(flags, false); - } - - static String printFlags(int flags, boolean for_class) { - if(flags == 0) - return "0"; - - StringBuffer buf = new StringBuffer(); - for(int i=0, pow=1; i <= Constants.MAX_ACC_FLAG; i++) { - if((flags & pow) != 0) { - if((pow == Constants.ACC_SYNCHRONIZED) && for_class) - buf.append("ACC_SUPER | "); - else - buf.append("ACC_" + Constants.ACCESS_NAMES[i].toUpperCase() + " | "); - } - - pow <<= 1; - } - - String str = buf.toString(); - return str.substring(0, str.length() - 3); - } - - static String printArgumentTypes(Type[] arg_types) { - if(arg_types.length == 0) - return "Type.NO_ARGS"; - - StringBuffer args = new StringBuffer(); - - for(int i=0; i < arg_types.length; i++) { - args.append(printType(arg_types[i])); - - if(i < arg_types.length - 1) - args.append(", "); - } - - return "new Type[] { " + args.toString() + " }"; - } - - static String printType(Type type) { - return printType(type.getSignature()); - } - - static String printType(String signature) { - Type type = Type.getType(signature); - byte t = type.getType(); - - if(t <= Constants.T_VOID) { - return "Type." + Constants.TYPE_NAMES[t].toUpperCase(); - } else if(type.toString().equals("java.lang.String")) { - return "Type.STRING"; - } else if(type.toString().equals("java.lang.Object")) { - return "Type.OBJECT"; - } else if(type.toString().equals("java.lang.StringBuffer")) { - return "Type.STRINGBUFFER"; - } else if(type instanceof ArrayType) { - ArrayType at = (ArrayType)type; - - return "new ArrayType(" + printType(at.getBasicType()) + - ", " + at.getDimensions() + ")"; - } else { - return "new ObjectType(\"" + Utility.signatureToString(signature, false) + - "\")"; - } - } - - /** Default main method - */ - public static void main(String[] argv) throws Exception { - JavaClass java_class; - String name = argv[0]; - - if((java_class = Repository.lookupClass(name)) == null) - java_class = new ClassParser(name).parse(); // May throw IOException - - BCELifier bcelifier = new BCELifier(java_class, System.out); - bcelifier.start(); - } -} diff --git a/bcel-builder/verifier-src/org/aspectj/apache/bcel/verifier/util/InstructionFinder.java b/bcel-builder/verifier-src/org/aspectj/apache/bcel/verifier/util/InstructionFinder.java deleted file mode 100644 index a695ac9db..000000000 --- a/bcel-builder/verifier-src/org/aspectj/apache/bcel/verifier/util/InstructionFinder.java +++ /dev/null @@ -1,440 +0,0 @@ -package org.aspectj.apache.bcel.verifier.util; - -/* ==================================================================== - * The Apache Software License, Version 1.1 - * - * Copyright (c) 2001 The Apache Software Foundation. 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. The end-user documentation included with the redistribution, - * if any, must include the following acknowledgment: - * "This product includes software developed by the - * Apache Software Foundation (https://www.apache.org/)." - * Alternately, this acknowledgment may appear in the software itself, - * if and wherever such third-party acknowledgments normally appear. - * - * 4. The names "Apache" and "Apache Software Foundation" and - * "Apache BCEL" must not be used to endorse or promote products - * derived from this software without prior written permission. For - * written permission, please contact apache@apache.org. - * - * 5. Products derived from this software may not be called "Apache", - * "Apache BCEL", nor may "Apache" appear in their name, without - * prior written permission of the Apache Software Foundation. - * - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 APACHE SOFTWARE FOUNDATION OR - * ITS 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. - * ==================================================================== - * - * This software consists of voluntary contributions made by many - * individuals on behalf of the Apache Software Foundation. For more - * information on the Apache Software Foundation, please see - * <https://www.apache.org/>. - */ - -import java.util.*; -import org.aspectj.apache.bcel.Constants; -import org.aspectj.apache.bcel.generic.*; -import org.apache.regexp.*; - -/** - * InstructionFinder is a tool to search for given instructions patterns, - * i.e., match sequences of instructions in an instruction list via - * regular expressions. This can be used, e.g., in order to implement - * a peep hole optimizer that looks for code patterns and replaces - * them with faster equivalents. - * - * <p>This class internally uses the <a href="https://jakarta.apache.org/regexp/"> - * Regexp</a> package to search for regular expressions. - * - * A typical application would look like this: -<pre> - InstructionFinder f = new InstructionFinder(il); - String pat = "IfInstruction ICONST_0 GOTO ICONST_1 NOP (IFEQ|IFNE)"; - - for(Iterator i = f.search(pat, constraint); i.hasNext(); ) { - InstructionHandle[] match = (InstructionHandle[])i.next(); - ... - il.delete(match[1], match[5]); - ... - } -</pre> - * @version $Id: InstructionFinder.java,v 1.4 2009/09/09 19:56:20 aclement Exp $ - * @author <A HREF="https://www.berlin.de/~markus.dahm/">M. Dahm</A> - * @see Instruction - * @see InstructionList - */ -public class InstructionFinder { - private static final int OFFSET = 32767; // char + OFFSET is outside of LATIN-1 - private static final int NO_OPCODES = 256; // Potential number, some are not used - - private static final HashMap<String, String> map = new HashMap<String, String>(); // Map<String,Pattern> - - private InstructionList il; - private String il_string; // instruction list as string - private InstructionHandle[] handles; // map instruction list to array - - /** - * @param il instruction list to search for given patterns - */ - public InstructionFinder(InstructionList il) { - this.il = il; - reread(); - } - - /** - * Reread the instruction list, e.g., after you've altered the list upon a match. - */ - public final void reread() { - int size = il.getLength(); - char[] buf = new char[size]; // Create a string with length equal to il length - handles = il.getInstructionHandles(); - - // Map opcodes to characters - for(int i=0; i < size; i++) - buf[i] = makeChar(handles[i].getInstruction().getOpcode()); - - il_string = new String(buf); - } - - /** - * Map symbolic instruction names like "getfield" to a single character. - * - * @param pattern instruction pattern in lower case - * @return encoded string for a pattern such as "BranchInstruction". - */ - private static final String mapName(String pattern) { - String result = map.get(pattern); - - if(result != null) - return result; - - for(short i=0; i < NO_OPCODES; i++) - if(pattern.equals(Constants.OPCODE_NAMES[i])) - return "" + makeChar(i); - - throw new RuntimeException("Instruction unknown: " + pattern); - } - - /** - * Replace symbolic names of instructions with the appropiate character and remove - * all white space from string. Meta characters such as +, * are ignored. - * - * @param pattern The pattern to compile - * @return translated regular expression string - */ - private static final String compilePattern(String pattern) { - String lower = pattern.toLowerCase(); - StringBuffer buf = new StringBuffer(); - int size = pattern.length(); - - for(int i=0; i < size; i++) { - char ch = lower.charAt(i); - - if(Character.isLetterOrDigit(ch)) { - StringBuffer name = new StringBuffer(); - - while((Character.isLetterOrDigit(ch) || ch == '_') && i < size) { - name.append(ch); - - if(++i < size) - ch = lower.charAt(i); - else - break; - } - - i--; - - buf.append(mapName(name.toString())); - } else if(!Character.isWhitespace(ch)) - buf.append(ch); - } - - return buf.toString(); - } - - /** - * @return the matched piece of code as an array of instruction (handles) - */ - private InstructionHandle[] getMatch(int matched_from, int match_length) { - InstructionHandle[] match = new InstructionHandle[match_length]; - System.arraycopy(handles, matched_from, match, 0, match_length); - - return match; - } - - /** - * Search for the given pattern in the instruction list. You can search for any valid - * opcode via its symbolic name, e.g. "istore". You can also use a super class or - * an interface name to match a whole set of instructions, e.g. "BranchInstruction" or - * "LoadInstruction". "istore" is also an alias for all "istore_x" instructions. Additional - * aliases are "if" for "ifxx", "if_icmp" for "if_icmpxx", "if_acmp" for "if_acmpxx". - * - * Consecutive instruction names must be separated by white space which will be removed - * during the compilation of the pattern. - * - * For the rest the usual pattern matching rules for regular expressions apply.<P> - * Example pattern: - * <pre> - search("BranchInstruction NOP ((IfInstruction|GOTO)+ ISTORE Instruction)*"); - * </pre> - * - * <p>If you alter the instruction list upon a match such that other - * matching areas are affected, you should call reread() to update - * the finder and call search() again, because the matches are cached. - * - * @param pattern the instruction pattern to search for, where case is ignored - * @param from where to start the search in the instruction list - * @param constraint optional CodeConstraint to check the found code pattern for - * user-defined constraints - * @return iterator of matches where e.nextElement() returns an array of instruction handles - * describing the matched area - */ - public final Iterator<InstructionHandle[]> search(String pattern, InstructionHandle from, - CodeConstraint constraint) - { - String search = compilePattern(pattern); - int start = -1; - - for(int i=0; i < handles.length; i++) { - if(handles[i] == from) { - start = i; // Where to start search from (index) - break; - } - } - - if(start == -1) - throw new ClassGenException("Instruction handle " + from + - " not found in instruction list."); - try { - RE regex = new RE(search); - ArrayList<InstructionHandle[]> matches = new ArrayList<InstructionHandle[]>(); - - while(start < il_string.length() && regex.match(il_string, start)) { - int startExpr = regex.getParenStart(0); - int endExpr = regex.getParenEnd(0); - int lenExpr = regex.getParenLength(0); - - InstructionHandle[] match = getMatch(startExpr, lenExpr); - - if((constraint == null) || constraint.checkCode(match)) - matches.add(match); - start = endExpr; - } - - return matches.iterator(); - } catch(RESyntaxException e) { - System.err.println(e); - } - - return null; - } - - /** - * Start search beginning from the start of the given instruction list. - * - * @param pattern the instruction pattern to search for, where case is ignored - * @return iterator of matches where e.nextElement() - * returns an array of instruction handles describing the matched - * area - */ - public final Iterator<InstructionHandle[]> search(String pattern) { - return search(pattern, il.getStart(), null); - } - - /** - * Start search beginning from `from'. - * - * @param pattern the instruction pattern to search for, where case is ignored - * @param from where to start the search in the instruction list - * @return iterator of matches where e.nextElement() returns an array of instruction handles - * describing the matched area - */ - public final Iterator<InstructionHandle[]> search(String pattern, InstructionHandle from) { - return search(pattern, from, null); - } - - /** - * Start search beginning from the start of the given instruction list. - * Check found matches with the constraint object. - * - * @param pattern the instruction pattern to search for, case is ignored - * @param constraint constraints to be checked on matching code - * @return instruction handle or `null' if the match failed - */ - public final Iterator<InstructionHandle[]> search(String pattern, CodeConstraint constraint) { - return search(pattern, il.getStart(), constraint); - } - - /** - * Convert opcode number to char. - */ - private static final char makeChar(short opcode) { - return (char)(opcode + OFFSET); - } - - /** - * @return the inquired instruction list - */ - public final InstructionList getInstructionList() { return il; } - - /** - * Code patterns found may be checked using an additional - * user-defined constraint object whether they really match the needed criterion. - * I.e., check constraints that can not expressed with regular expressions. - * - */ - public interface CodeConstraint { - /** - * @param match array of instructions matching the requested pattern - * @return true if the matched area is really useful - */ - public boolean checkCode(InstructionHandle[] match); - } - - // Initialize pattern map - - static { - map.put("arithmeticinstruction", "(irem|lrem|iand|ior|ineg|isub|lneg|fneg|fmul|ldiv|fadd|lxor|frem|idiv|land|ixor|ishr|fsub|lshl|fdiv|iadd|lor|dmul|lsub|ishl|imul|lmul|lushr|dneg|iushr|lshr|ddiv|drem|dadd|ladd|dsub)"); - map.put("invokeinstruction", "(invokevirtual|invokeinterface|invokestatic|invokespecial)"); - map.put("arrayinstruction", "(baload|aastore|saload|caload|fastore|lastore|iaload|castore|iastore|aaload|bastore|sastore|faload|laload|daload|dastore)"); - map.put("gotoinstruction", "(goto|goto_w)"); - map.put("conversioninstruction", "(d2l|l2d|i2s|d2i|l2i|i2b|l2f|d2f|f2i|i2d|i2l|f2d|i2c|f2l|i2f)"); - map.put("localvariableinstruction", "(fstore|iinc|lload|dstore|dload|iload|aload|astore|istore|fload|lstore)"); - map.put("loadinstruction", "(fload|dload|lload|iload|aload)"); - map.put("fieldinstruction", "(getfield|putstatic|getstatic|putfield)"); - map.put("cpinstruction", "(ldc2_w|invokeinterface|multianewarray|putstatic|instanceof|getstatic|checkcast|getfield|invokespecial|ldc_w|invokestatic|invokevirtual|putfield|ldc|new|anewarray)"); - map.put("stackinstruction", "(dup2|swap|dup2_x2|pop|pop2|dup|dup2_x1|dup_x2|dup_x1)"); - map.put("branchinstruction", "(ifle|if_acmpne|if_icmpeq|if_acmpeq|ifnonnull|goto_w|iflt|ifnull|if_icmpne|tableswitch|if_icmple|ifeq|if_icmplt|jsr_w|if_icmpgt|ifgt|jsr|goto|ifne|ifge|lookupswitch|if_icmpge)"); - map.put("returninstruction", "(lreturn|ireturn|freturn|dreturn|areturn|return)"); - map.put("storeinstruction", "(istore|fstore|dstore|astore|lstore)"); - map.put("select", "(tableswitch|lookupswitch)"); - map.put("ifinstruction", "(ifeq|ifgt|if_icmpne|if_icmpeq|ifge|ifnull|ifne|if_icmple|if_icmpge|if_acmpeq|if_icmplt|if_acmpne|ifnonnull|iflt|if_icmpgt|ifle)"); - map.put("jsrinstruction", "(jsr|jsr_w)"); - map.put("variablelengthinstruction", "(tableswitch|jsr|goto|lookupswitch)"); - map.put("unconditionalbranch", "(goto|jsr|jsr_w|athrow|goto_w)"); - map.put("constantpushinstruction", "(dconst|bipush|sipush|fconst|iconst|lconst)"); - map.put("typedinstruction", "(imul|lsub|aload|fload|lor|new|aaload|fcmpg|iand|iaload|lrem|idiv|d2l|isub|dcmpg|dastore|ret|f2d|f2i|drem|iinc|i2c|checkcast|frem|lreturn|astore|lushr|daload|dneg|fastore|istore|lshl|ldiv|lstore|areturn|ishr|ldc_w|invokeinterface|aastore|lxor|ishl|l2d|i2f|return|faload|sipush|iushr|caload|instanceof|invokespecial|putfield|fmul|ireturn|laload|d2f|lneg|ixor|i2l|fdiv|lastore|multianewarray|i2b|getstatic|i2d|putstatic|fcmpl|saload|ladd|irem|dload|jsr_w|dconst|dcmpl|fsub|freturn|ldc|aconst_null|castore|lmul|ldc2_w|dadd|iconst|f2l|ddiv|dstore|land|jsr|anewarray|dmul|bipush|dsub|sastore|d2i|i2s|lshr|iadd|l2i|lload|bastore|fstore|fneg|iload|fadd|baload|fconst|ior|ineg|dreturn|l2f|lconst|getfield|invokevirtual|invokestatic|iastore)"); - map.put("popinstruction", "(fstore|dstore|pop|pop2|astore|putstatic|istore|lstore)"); - map.put("allocationinstruction", "(multianewarray|new|anewarray|newarray)"); - map.put("indexedinstruction", "(lload|lstore|fload|ldc2_w|invokeinterface|multianewarray|astore|dload|putstatic|instanceof|getstatic|checkcast|getfield|invokespecial|dstore|istore|iinc|ldc_w|ret|fstore|invokestatic|iload|putfield|invokevirtual|ldc|new|aload|anewarray)"); - map.put("pushinstruction", "(dup|lload|dup2|bipush|fload|ldc2_w|sipush|lconst|fconst|dload|getstatic|ldc_w|aconst_null|dconst|iload|ldc|iconst|aload)"); - map.put("stackproducer", "(imul|lsub|aload|fload|lor|new|aaload|fcmpg|iand|iaload|lrem|idiv|d2l|isub|dcmpg|dup|f2d|f2i|drem|i2c|checkcast|frem|lushr|daload|dneg|lshl|ldiv|ishr|ldc_w|invokeinterface|lxor|ishl|l2d|i2f|faload|sipush|iushr|caload|instanceof|invokespecial|fmul|laload|d2f|lneg|ixor|i2l|fdiv|getstatic|i2b|swap|i2d|dup2|fcmpl|saload|ladd|irem|dload|jsr_w|dconst|dcmpl|fsub|ldc|arraylength|aconst_null|tableswitch|lmul|ldc2_w|iconst|dadd|f2l|ddiv|land|jsr|anewarray|dmul|bipush|dsub|d2i|newarray|i2s|lshr|iadd|lload|l2i|fneg|iload|fadd|baload|fconst|lookupswitch|ior|ineg|lconst|l2f|getfield|invokevirtual|invokestatic)"); - map.put("stackconsumer", "(imul|lsub|lor|iflt|fcmpg|if_icmpgt|iand|ifeq|if_icmplt|lrem|ifnonnull|idiv|d2l|isub|dcmpg|dastore|if_icmpeq|f2d|f2i|drem|i2c|checkcast|frem|lreturn|astore|lushr|pop2|monitorexit|dneg|fastore|istore|lshl|ldiv|lstore|areturn|if_icmpge|ishr|monitorenter|invokeinterface|aastore|lxor|ishl|l2d|i2f|return|iushr|instanceof|invokespecial|fmul|ireturn|d2f|lneg|ixor|pop|i2l|ifnull|fdiv|lastore|i2b|if_acmpeq|ifge|swap|i2d|putstatic|fcmpl|ladd|irem|dcmpl|fsub|freturn|ifgt|castore|lmul|dadd|f2l|ddiv|dstore|land|if_icmpne|if_acmpne|dmul|dsub|sastore|ifle|d2i|i2s|lshr|iadd|l2i|bastore|fstore|fneg|fadd|ior|ineg|ifne|dreturn|l2f|if_icmple|getfield|invokevirtual|invokestatic|iastore)"); - map.put("exceptionthrower", "(irem|lrem|laload|putstatic|baload|dastore|areturn|getstatic|ldiv|anewarray|iastore|castore|idiv|saload|lastore|fastore|putfield|lreturn|caload|getfield|return|aastore|freturn|newarray|instanceof|multianewarray|athrow|faload|iaload|aaload|dreturn|monitorenter|checkcast|bastore|arraylength|new|invokevirtual|sastore|ldc_w|ireturn|invokespecial|monitorexit|invokeinterface|ldc|invokestatic|daload)"); - map.put("loadclass", "(multianewarray|invokeinterface|instanceof|invokespecial|putfield|checkcast|putstatic|invokevirtual|new|getstatic|invokestatic|getfield|anewarray)"); - map.put("instructiontargeter", "(ifle|if_acmpne|if_icmpeq|if_acmpeq|ifnonnull|goto_w|iflt|ifnull|if_icmpne|tableswitch|if_icmple|ifeq|if_icmplt|jsr_w|if_icmpgt|ifgt|jsr|goto|ifne|ifge|lookupswitch|if_icmpge)"); - - // Some aliases - map.put("if_icmp", "(if_icmpne|if_icmpeq|if_icmple|if_icmpge|if_icmplt|if_icmpgt)"); - map.put("if_acmp", "(if_acmpeq|if_acmpne)"); - map.put("if", "(ifeq|ifne|iflt|ifge|ifgt|ifle)"); - - // Precompile some aliases first - map.put("iconst", precompile(Constants.ICONST_0, Constants.ICONST_5, Constants.ICONST_M1)); - map.put("lconst", new String(new char[] { '(', makeChar(Constants.LCONST_0), '|', - makeChar(Constants.LCONST_1), ')' })); - map.put("dconst", new String(new char[] { '(', makeChar(Constants.DCONST_0), '|', - makeChar(Constants.DCONST_1), ')' })); - map.put("fconst", new String(new char[] { '(', makeChar(Constants.FCONST_0), '|', - makeChar(Constants.FCONST_1), ')' })); - - map.put("iload", precompile(Constants.ILOAD_0, Constants.ILOAD_3, Constants.ILOAD)); - map.put("dload", precompile(Constants.DLOAD_0, Constants.DLOAD_3, Constants.DLOAD)); - map.put("fload", precompile(Constants.FLOAD_0, Constants.FLOAD_3, Constants.FLOAD)); - map.put("aload", precompile(Constants.ALOAD_0, Constants.ALOAD_3, Constants.ALOAD)); - - map.put("istore", precompile(Constants.ISTORE_0, Constants.ISTORE_3, Constants.ISTORE)); - map.put("dstore", precompile(Constants.DSTORE_0, Constants.DSTORE_3, Constants.DSTORE)); - map.put("fstore", precompile(Constants.FSTORE_0, Constants.FSTORE_3, Constants.FSTORE)); - map.put("astore", precompile(Constants.ASTORE_0, Constants.ASTORE_3, Constants.ASTORE)); - - // Compile strings - - for(Iterator<String> i = map.keySet().iterator(); i.hasNext(); ) { - String key = i.next(); - String value = map.get(key); - - char ch = value.charAt(1); // Omit already precompiled patterns - if(ch < OFFSET) { - map.put(key, compilePattern(value)); // precompile all patterns - } - } - - // Add instruction alias to match anything - - StringBuffer buf = new StringBuffer("("); - - for(short i=0; i < NO_OPCODES; i++) { - if(Constants.iLen[i] != Constants.UNDEFINED_LENGTH) { // Not an invalid opcode - buf.append(makeChar(i)); - - if(i < NO_OPCODES - 1) - buf.append('|'); - } - } - buf.append(')'); - - map.put("instruction", buf.toString()); - } - - private static String precompile(short from, short to, short extra) { - StringBuffer buf = new StringBuffer("("); - - for(short i=from; i <= to; i++) { - buf.append(makeChar(i)); - buf.append('|'); - } - - buf.append(makeChar(extra)); - buf.append(")"); - return buf.toString(); - } - -// /* -// * Internal debugging routines. -// */ -// private static final String pattern2string(String pattern) { -// return pattern2string(pattern, true); -// } -// -// private static final String pattern2string(String pattern, boolean make_string) { -// StringBuffer buf = new StringBuffer(); -// -// for(int i=0; i < pattern.length(); i++) { -// char ch = pattern.charAt(i); -// -// if(ch >= OFFSET) { -// if(make_string) -// buf.append(Constants.OPCODE_NAMES[ch - OFFSET]); -// else -// buf.append((int)(ch - OFFSET)); -// } else -// buf.append(ch); -// } -// -// return buf.toString(); -// } -} |