| /*** |
| * ASM: a very small and fast Java bytecode manipulation framework |
| * Copyright (c) 2000-2011 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.apache.tajo.org.objectweb.asm.util; |
| |
| import java.io.FileInputStream; |
| import java.io.PrintWriter; |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| import org.apache.tajo.org.objectweb.asm.Attribute; |
| import org.apache.tajo.org.objectweb.asm.ClassReader; |
| import org.apache.tajo.org.objectweb.asm.Label; |
| import org.apache.tajo.org.objectweb.asm.Type; |
| import org.apache.tajo.org.objectweb.asm.signature.SignatureReader; |
| import org.apache.tajo.org.objectweb.asm.Handle; |
| import org.apache.tajo.org.objectweb.asm.Opcodes; |
| |
| /** |
| * A {@link Printer} that prints a disassembled view of the classes it visits. |
| * |
| * @author Eric Bruneton |
| */ |
| public class Textifier extends Printer { |
| |
| /** |
| * Constant used in {@link #appendDescriptor appendDescriptor} for internal |
| * type names in bytecode notation. |
| */ |
| public static final int INTERNAL_NAME = 0; |
| |
| /** |
| * Constant used in {@link #appendDescriptor appendDescriptor} for field |
| * descriptors, formatted in bytecode notation |
| */ |
| public static final int FIELD_DESCRIPTOR = 1; |
| |
| /** |
| * Constant used in {@link #appendDescriptor appendDescriptor} for field |
| * signatures, formatted in bytecode notation |
| */ |
| public static final int FIELD_SIGNATURE = 2; |
| |
| /** |
| * Constant used in {@link #appendDescriptor appendDescriptor} for method |
| * descriptors, formatted in bytecode notation |
| */ |
| public static final int METHOD_DESCRIPTOR = 3; |
| |
| /** |
| * Constant used in {@link #appendDescriptor appendDescriptor} for method |
| * signatures, formatted in bytecode notation |
| */ |
| public static final int METHOD_SIGNATURE = 4; |
| |
| /** |
| * Constant used in {@link #appendDescriptor appendDescriptor} for class |
| * signatures, formatted in bytecode notation |
| */ |
| public static final int CLASS_SIGNATURE = 5; |
| |
| /** |
| * Constant used in {@link #appendDescriptor appendDescriptor} for field or |
| * method return value signatures, formatted in default Java notation |
| * (non-bytecode) |
| */ |
| public static final int TYPE_DECLARATION = 6; |
| |
| /** |
| * Constant used in {@link #appendDescriptor appendDescriptor} for class |
| * signatures, formatted in default Java notation (non-bytecode) |
| */ |
| public static final int CLASS_DECLARATION = 7; |
| |
| /** |
| * Constant used in {@link #appendDescriptor appendDescriptor} for method |
| * parameter signatures, formatted in default Java notation (non-bytecode) |
| */ |
| public static final int PARAMETERS_DECLARATION = 8; |
| |
| /** |
| * Constant used in {@link #appendDescriptor appendDescriptor} for handle |
| * descriptors, formatted in bytecode notation |
| */ |
| public static final int HANDLE_DESCRIPTOR = 9; |
| |
| /** |
| * Tab for class members. |
| */ |
| protected String tab = " "; |
| |
| /** |
| * Tab for bytecode instructions. |
| */ |
| protected String tab2 = " "; |
| |
| /** |
| * Tab for table and lookup switch instructions. |
| */ |
| protected String tab3 = " "; |
| |
| /** |
| * Tab for labels. |
| */ |
| protected String ltab = " "; |
| |
| /** |
| * The label names. This map associate String values to Label keys. |
| */ |
| protected Map<Label, String> labelNames; |
| |
| private int valueNumber = 0; |
| |
| /** |
| * Constructs a new {@link Textifier}. <i>Subclasses must not use this |
| * constructor</i>. Instead, they must use the {@link #Textifier(int)} |
| * version. |
| */ |
| public Textifier() { |
| this(Opcodes.ASM4); |
| } |
| |
| /** |
| * Constructs a new {@link Textifier}. |
| * |
| * @param api |
| * the ASM API version implemented by this visitor. Must be one |
| * of {@link Opcodes#ASM4}. |
| */ |
| protected Textifier(final int api) { |
| super(api); |
| } |
| |
| /** |
| * Prints a disassembled view of the given class to the standard output. |
| * <p> |
| * Usage: Textifier [-debug] <binary class name or class file name > |
| * |
| * @param args |
| * the command line arguments. |
| * |
| * @throws Exception |
| * if the class cannot be found, or if an IO exception occurs. |
| */ |
| public static void main(final String[] args) throws Exception { |
| int i = 0; |
| int flags = ClassReader.SKIP_DEBUG; |
| |
| boolean ok = true; |
| if (args.length < 1 || args.length > 2) { |
| ok = false; |
| } |
| if (ok && "-debug".equals(args[0])) { |
| i = 1; |
| flags = 0; |
| if (args.length != 2) { |
| ok = false; |
| } |
| } |
| if (!ok) { |
| System.err |
| .println("Prints a disassembled view of the given class."); |
| System.err.println("Usage: Textifier [-debug] " |
| + "<fully qualified class name or class file name>"); |
| return; |
| } |
| ClassReader cr; |
| if (args[i].endsWith(".class") || args[i].indexOf('\\') > -1 |
| || args[i].indexOf('/') > -1) { |
| cr = new ClassReader(new FileInputStream(args[i])); |
| } else { |
| cr = new ClassReader(args[i]); |
| } |
| cr.accept(new TraceClassVisitor(new PrintWriter(System.out)), flags); |
| } |
| |
| // ------------------------------------------------------------------------ |
| // Classes |
| // ------------------------------------------------------------------------ |
| |
| @Override |
| public void visit(final int version, final int access, final String name, |
| final String signature, final String superName, |
| final String[] interfaces) { |
| int major = version & 0xFFFF; |
| int minor = version >>> 16; |
| buf.setLength(0); |
| buf.append("// class version ").append(major).append('.').append(minor) |
| .append(" (").append(version).append(")\n"); |
| if ((access & Opcodes.ACC_DEPRECATED) != 0) { |
| buf.append("// DEPRECATED\n"); |
| } |
| buf.append("// access flags 0x") |
| .append(Integer.toHexString(access).toUpperCase()).append('\n'); |
| |
| appendDescriptor(CLASS_SIGNATURE, signature); |
| if (signature != null) { |
| TraceSignatureVisitor sv = new TraceSignatureVisitor(access); |
| SignatureReader r = new SignatureReader(signature); |
| r.accept(sv); |
| buf.append("// declaration: ").append(name) |
| .append(sv.getDeclaration()).append('\n'); |
| } |
| |
| appendAccess(access & ~Opcodes.ACC_SUPER); |
| if ((access & Opcodes.ACC_ANNOTATION) != 0) { |
| buf.append("@interface "); |
| } else if ((access & Opcodes.ACC_INTERFACE) != 0) { |
| buf.append("interface "); |
| } else if ((access & Opcodes.ACC_ENUM) == 0) { |
| buf.append("class "); |
| } |
| appendDescriptor(INTERNAL_NAME, name); |
| |
| if (superName != null && !"java/lang/Object".equals(superName)) { |
| buf.append(" extends "); |
| appendDescriptor(INTERNAL_NAME, superName); |
| buf.append(' '); |
| } |
| if (interfaces != null && interfaces.length > 0) { |
| buf.append(" implements "); |
| for (int i = 0; i < interfaces.length; ++i) { |
| appendDescriptor(INTERNAL_NAME, interfaces[i]); |
| buf.append(' '); |
| } |
| } |
| buf.append(" {\n\n"); |
| |
| text.add(buf.toString()); |
| } |
| |
| @Override |
| public void visitSource(final String file, final String debug) { |
| buf.setLength(0); |
| if (file != null) { |
| buf.append(tab).append("// compiled from: ").append(file) |
| .append('\n'); |
| } |
| if (debug != null) { |
| buf.append(tab).append("// debug info: ").append(debug) |
| .append('\n'); |
| } |
| if (buf.length() > 0) { |
| text.add(buf.toString()); |
| } |
| } |
| |
| @Override |
| public void visitOuterClass(final String owner, final String name, |
| final String desc) { |
| buf.setLength(0); |
| buf.append(tab).append("OUTERCLASS "); |
| appendDescriptor(INTERNAL_NAME, owner); |
| buf.append(' '); |
| if (name != null) { |
| buf.append(name).append(' '); |
| } |
| appendDescriptor(METHOD_DESCRIPTOR, desc); |
| buf.append('\n'); |
| text.add(buf.toString()); |
| } |
| |
| @Override |
| public Textifier visitClassAnnotation(final String desc, |
| final boolean visible) { |
| text.add("\n"); |
| return visitAnnotation(desc, visible); |
| } |
| |
| @Override |
| public void visitClassAttribute(final Attribute attr) { |
| text.add("\n"); |
| visitAttribute(attr); |
| } |
| |
| @Override |
| public void visitInnerClass(final String name, final String outerName, |
| final String innerName, final int access) { |
| buf.setLength(0); |
| buf.append(tab).append("// access flags 0x"); |
| buf.append( |
| Integer.toHexString(access & ~Opcodes.ACC_SUPER).toUpperCase()) |
| .append('\n'); |
| buf.append(tab); |
| appendAccess(access); |
| buf.append("INNERCLASS "); |
| appendDescriptor(INTERNAL_NAME, name); |
| buf.append(' '); |
| appendDescriptor(INTERNAL_NAME, outerName); |
| buf.append(' '); |
| appendDescriptor(INTERNAL_NAME, innerName); |
| buf.append('\n'); |
| text.add(buf.toString()); |
| } |
| |
| @Override |
| public Textifier visitField(final int access, final String name, |
| final String desc, final String signature, final Object value) { |
| buf.setLength(0); |
| buf.append('\n'); |
| if ((access & Opcodes.ACC_DEPRECATED) != 0) { |
| buf.append(tab).append("// DEPRECATED\n"); |
| } |
| buf.append(tab).append("// access flags 0x") |
| .append(Integer.toHexString(access).toUpperCase()).append('\n'); |
| if (signature != null) { |
| buf.append(tab); |
| appendDescriptor(FIELD_SIGNATURE, signature); |
| |
| TraceSignatureVisitor sv = new TraceSignatureVisitor(0); |
| SignatureReader r = new SignatureReader(signature); |
| r.acceptType(sv); |
| buf.append(tab).append("// declaration: ") |
| .append(sv.getDeclaration()).append('\n'); |
| } |
| |
| buf.append(tab); |
| appendAccess(access); |
| |
| appendDescriptor(FIELD_DESCRIPTOR, desc); |
| buf.append(' ').append(name); |
| if (value != null) { |
| buf.append(" = "); |
| if (value instanceof String) { |
| buf.append('\"').append(value).append('\"'); |
| } else { |
| buf.append(value); |
| } |
| } |
| |
| buf.append('\n'); |
| text.add(buf.toString()); |
| |
| Textifier t = createTextifier(); |
| text.add(t.getText()); |
| return t; |
| } |
| |
| @Override |
| public Textifier visitMethod(final int access, final String name, |
| final String desc, final String signature, final String[] exceptions) { |
| buf.setLength(0); |
| buf.append('\n'); |
| if ((access & Opcodes.ACC_DEPRECATED) != 0) { |
| buf.append(tab).append("// DEPRECATED\n"); |
| } |
| buf.append(tab).append("// access flags 0x") |
| .append(Integer.toHexString(access).toUpperCase()).append('\n'); |
| |
| if (signature != null) { |
| buf.append(tab); |
| appendDescriptor(METHOD_SIGNATURE, signature); |
| |
| TraceSignatureVisitor v = new TraceSignatureVisitor(0); |
| SignatureReader r = new SignatureReader(signature); |
| r.accept(v); |
| String genericDecl = v.getDeclaration(); |
| String genericReturn = v.getReturnType(); |
| String genericExceptions = v.getExceptions(); |
| |
| buf.append(tab).append("// declaration: ").append(genericReturn) |
| .append(' ').append(name).append(genericDecl); |
| if (genericExceptions != null) { |
| buf.append(" throws ").append(genericExceptions); |
| } |
| buf.append('\n'); |
| } |
| |
| buf.append(tab); |
| appendAccess(access); |
| if ((access & Opcodes.ACC_NATIVE) != 0) { |
| buf.append("native "); |
| } |
| if ((access & Opcodes.ACC_VARARGS) != 0) { |
| buf.append("varargs "); |
| } |
| if ((access & Opcodes.ACC_BRIDGE) != 0) { |
| buf.append("bridge "); |
| } |
| |
| buf.append(name); |
| appendDescriptor(METHOD_DESCRIPTOR, desc); |
| if (exceptions != null && exceptions.length > 0) { |
| buf.append(" throws "); |
| for (int i = 0; i < exceptions.length; ++i) { |
| appendDescriptor(INTERNAL_NAME, exceptions[i]); |
| buf.append(' '); |
| } |
| } |
| |
| buf.append('\n'); |
| text.add(buf.toString()); |
| |
| Textifier t = createTextifier(); |
| text.add(t.getText()); |
| return t; |
| } |
| |
| @Override |
| public void visitClassEnd() { |
| text.add("}\n"); |
| } |
| |
| // ------------------------------------------------------------------------ |
| // Annotations |
| // ------------------------------------------------------------------------ |
| |
| @Override |
| public void visit(final String name, final Object value) { |
| buf.setLength(0); |
| appendComa(valueNumber++); |
| |
| if (name != null) { |
| buf.append(name).append('='); |
| } |
| |
| if (value instanceof String) { |
| visitString((String) value); |
| } else if (value instanceof Type) { |
| visitType((Type) value); |
| } else if (value instanceof Byte) { |
| visitByte(((Byte) value).byteValue()); |
| } else if (value instanceof Boolean) { |
| visitBoolean(((Boolean) value).booleanValue()); |
| } else if (value instanceof Short) { |
| visitShort(((Short) value).shortValue()); |
| } else if (value instanceof Character) { |
| visitChar(((Character) value).charValue()); |
| } else if (value instanceof Integer) { |
| visitInt(((Integer) value).intValue()); |
| } else if (value instanceof Float) { |
| visitFloat(((Float) value).floatValue()); |
| } else if (value instanceof Long) { |
| visitLong(((Long) value).longValue()); |
| } else if (value instanceof Double) { |
| visitDouble(((Double) value).doubleValue()); |
| } else if (value.getClass().isArray()) { |
| buf.append('{'); |
| if (value instanceof byte[]) { |
| byte[] v = (byte[]) value; |
| for (int i = 0; i < v.length; i++) { |
| appendComa(i); |
| visitByte(v[i]); |
| } |
| } else if (value instanceof boolean[]) { |
| boolean[] v = (boolean[]) value; |
| for (int i = 0; i < v.length; i++) { |
| appendComa(i); |
| visitBoolean(v[i]); |
| } |
| } else if (value instanceof short[]) { |
| short[] v = (short[]) value; |
| for (int i = 0; i < v.length; i++) { |
| appendComa(i); |
| visitShort(v[i]); |
| } |
| } else if (value instanceof char[]) { |
| char[] v = (char[]) value; |
| for (int i = 0; i < v.length; i++) { |
| appendComa(i); |
| visitChar(v[i]); |
| } |
| } else if (value instanceof int[]) { |
| int[] v = (int[]) value; |
| for (int i = 0; i < v.length; i++) { |
| appendComa(i); |
| visitInt(v[i]); |
| } |
| } else if (value instanceof long[]) { |
| long[] v = (long[]) value; |
| for (int i = 0; i < v.length; i++) { |
| appendComa(i); |
| visitLong(v[i]); |
| } |
| } else if (value instanceof float[]) { |
| float[] v = (float[]) value; |
| for (int i = 0; i < v.length; i++) { |
| appendComa(i); |
| visitFloat(v[i]); |
| } |
| } else if (value instanceof double[]) { |
| double[] v = (double[]) value; |
| for (int i = 0; i < v.length; i++) { |
| appendComa(i); |
| visitDouble(v[i]); |
| } |
| } |
| buf.append('}'); |
| } |
| |
| text.add(buf.toString()); |
| } |
| |
| private void visitInt(final int value) { |
| buf.append(value); |
| } |
| |
| private void visitLong(final long value) { |
| buf.append(value).append('L'); |
| } |
| |
| private void visitFloat(final float value) { |
| buf.append(value).append('F'); |
| } |
| |
| private void visitDouble(final double value) { |
| buf.append(value).append('D'); |
| } |
| |
| private void visitChar(final char value) { |
| buf.append("(char)").append((int) value); |
| } |
| |
| private void visitShort(final short value) { |
| buf.append("(short)").append(value); |
| } |
| |
| private void visitByte(final byte value) { |
| buf.append("(byte)").append(value); |
| } |
| |
| private void visitBoolean(final boolean value) { |
| buf.append(value); |
| } |
| |
| private void visitString(final String value) { |
| appendString(buf, value); |
| } |
| |
| private void visitType(final Type value) { |
| buf.append(value.getClassName()).append(".class"); |
| } |
| |
| @Override |
| public void visitEnum(final String name, final String desc, |
| final String value) { |
| buf.setLength(0); |
| appendComa(valueNumber++); |
| if (name != null) { |
| buf.append(name).append('='); |
| } |
| appendDescriptor(FIELD_DESCRIPTOR, desc); |
| buf.append('.').append(value); |
| text.add(buf.toString()); |
| } |
| |
| @Override |
| public Textifier visitAnnotation(final String name, final String desc) { |
| buf.setLength(0); |
| appendComa(valueNumber++); |
| if (name != null) { |
| buf.append(name).append('='); |
| } |
| buf.append('@'); |
| appendDescriptor(FIELD_DESCRIPTOR, desc); |
| buf.append('('); |
| text.add(buf.toString()); |
| Textifier t = createTextifier(); |
| text.add(t.getText()); |
| text.add(")"); |
| return t; |
| } |
| |
| @Override |
| public Textifier visitArray(final String name) { |
| buf.setLength(0); |
| appendComa(valueNumber++); |
| if (name != null) { |
| buf.append(name).append('='); |
| } |
| buf.append('{'); |
| text.add(buf.toString()); |
| Textifier t = createTextifier(); |
| text.add(t.getText()); |
| text.add("}"); |
| return t; |
| } |
| |
| @Override |
| public void visitAnnotationEnd() { |
| } |
| |
| // ------------------------------------------------------------------------ |
| // Fields |
| // ------------------------------------------------------------------------ |
| |
| @Override |
| public Textifier visitFieldAnnotation(final String desc, |
| final boolean visible) { |
| return visitAnnotation(desc, visible); |
| } |
| |
| @Override |
| public void visitFieldAttribute(final Attribute attr) { |
| visitAttribute(attr); |
| } |
| |
| @Override |
| public void visitFieldEnd() { |
| } |
| |
| // ------------------------------------------------------------------------ |
| // Methods |
| // ------------------------------------------------------------------------ |
| |
| @Override |
| public Textifier visitAnnotationDefault() { |
| text.add(tab2 + "default="); |
| Textifier t = createTextifier(); |
| text.add(t.getText()); |
| text.add("\n"); |
| return t; |
| } |
| |
| @Override |
| public Textifier visitMethodAnnotation(final String desc, |
| final boolean visible) { |
| return visitAnnotation(desc, visible); |
| } |
| |
| @Override |
| public Textifier visitParameterAnnotation(final int parameter, |
| final String desc, final boolean visible) { |
| buf.setLength(0); |
| buf.append(tab2).append('@'); |
| appendDescriptor(FIELD_DESCRIPTOR, desc); |
| buf.append('('); |
| text.add(buf.toString()); |
| Textifier t = createTextifier(); |
| text.add(t.getText()); |
| text.add(visible ? ") // parameter " : ") // invisible, parameter "); |
| text.add(new Integer(parameter)); |
| text.add("\n"); |
| return t; |
| } |
| |
| @Override |
| public void visitMethodAttribute(final Attribute attr) { |
| buf.setLength(0); |
| buf.append(tab).append("ATTRIBUTE "); |
| appendDescriptor(-1, attr.type); |
| |
| if (attr instanceof Textifiable) { |
| ((Textifiable) attr).textify(buf, labelNames); |
| } else { |
| buf.append(" : unknown\n"); |
| } |
| |
| text.add(buf.toString()); |
| } |
| |
| @Override |
| public void visitCode() { |
| } |
| |
| @Override |
| public void visitFrame(final int type, final int nLocal, |
| final Object[] local, final int nStack, final Object[] stack) { |
| buf.setLength(0); |
| buf.append(ltab); |
| buf.append("FRAME "); |
| switch (type) { |
| case Opcodes.F_NEW: |
| case Opcodes.F_FULL: |
| buf.append("FULL ["); |
| appendFrameTypes(nLocal, local); |
| buf.append("] ["); |
| appendFrameTypes(nStack, stack); |
| buf.append(']'); |
| break; |
| case Opcodes.F_APPEND: |
| buf.append("APPEND ["); |
| appendFrameTypes(nLocal, local); |
| buf.append(']'); |
| break; |
| case Opcodes.F_CHOP: |
| buf.append("CHOP ").append(nLocal); |
| break; |
| case Opcodes.F_SAME: |
| buf.append("SAME"); |
| break; |
| case Opcodes.F_SAME1: |
| buf.append("SAME1 "); |
| appendFrameTypes(1, stack); |
| break; |
| } |
| buf.append('\n'); |
| text.add(buf.toString()); |
| } |
| |
| @Override |
| public void visitInsn(final int opcode) { |
| buf.setLength(0); |
| buf.append(tab2).append(OPCODES[opcode]).append('\n'); |
| text.add(buf.toString()); |
| } |
| |
| @Override |
| public void visitIntInsn(final int opcode, final int operand) { |
| buf.setLength(0); |
| buf.append(tab2) |
| .append(OPCODES[opcode]) |
| .append(' ') |
| .append(opcode == Opcodes.NEWARRAY ? TYPES[operand] : Integer |
| .toString(operand)).append('\n'); |
| text.add(buf.toString()); |
| } |
| |
| @Override |
| public void visitVarInsn(final int opcode, final int var) { |
| buf.setLength(0); |
| buf.append(tab2).append(OPCODES[opcode]).append(' ').append(var) |
| .append('\n'); |
| text.add(buf.toString()); |
| } |
| |
| @Override |
| public void visitTypeInsn(final int opcode, final String type) { |
| buf.setLength(0); |
| buf.append(tab2).append(OPCODES[opcode]).append(' '); |
| appendDescriptor(INTERNAL_NAME, type); |
| buf.append('\n'); |
| text.add(buf.toString()); |
| } |
| |
| @Override |
| public void visitFieldInsn(final int opcode, final String owner, |
| final String name, final String desc) { |
| buf.setLength(0); |
| buf.append(tab2).append(OPCODES[opcode]).append(' '); |
| appendDescriptor(INTERNAL_NAME, owner); |
| buf.append('.').append(name).append(" : "); |
| appendDescriptor(FIELD_DESCRIPTOR, desc); |
| buf.append('\n'); |
| text.add(buf.toString()); |
| } |
| |
| @Override |
| public void visitMethodInsn(final int opcode, final String owner, |
| final String name, final String desc) { |
| buf.setLength(0); |
| buf.append(tab2).append(OPCODES[opcode]).append(' '); |
| appendDescriptor(INTERNAL_NAME, owner); |
| buf.append('.').append(name).append(' '); |
| appendDescriptor(METHOD_DESCRIPTOR, desc); |
| buf.append('\n'); |
| text.add(buf.toString()); |
| } |
| |
| @Override |
| public void visitInvokeDynamicInsn(String name, String desc, Handle bsm, |
| Object... bsmArgs) { |
| buf.setLength(0); |
| buf.append(tab2).append("INVOKEDYNAMIC").append(' '); |
| buf.append(name); |
| appendDescriptor(METHOD_DESCRIPTOR, desc); |
| buf.append(" ["); |
| appendHandle(bsm); |
| buf.append(tab3).append("// arguments:"); |
| if (bsmArgs.length == 0) { |
| buf.append(" none"); |
| } else { |
| buf.append('\n').append(tab3); |
| for (int i = 0; i < bsmArgs.length; i++) { |
| Object cst = bsmArgs[i]; |
| if (cst instanceof String) { |
| Printer.appendString(buf, (String) cst); |
| } else if (cst instanceof Type) { |
| buf.append(((Type) cst).getDescriptor()).append(".class"); |
| } else if (cst instanceof Handle) { |
| appendHandle((Handle) cst); |
| } else { |
| buf.append(cst); |
| } |
| buf.append(", "); |
| } |
| buf.setLength(buf.length() - 2); |
| } |
| buf.append('\n'); |
| buf.append(tab2).append("]\n"); |
| text.add(buf.toString()); |
| } |
| |
| @Override |
| public void visitJumpInsn(final int opcode, final Label label) { |
| buf.setLength(0); |
| buf.append(tab2).append(OPCODES[opcode]).append(' '); |
| appendLabel(label); |
| buf.append('\n'); |
| text.add(buf.toString()); |
| } |
| |
| @Override |
| public void visitLabel(final Label label) { |
| buf.setLength(0); |
| buf.append(ltab); |
| appendLabel(label); |
| buf.append('\n'); |
| text.add(buf.toString()); |
| } |
| |
| @Override |
| public void visitLdcInsn(final Object cst) { |
| buf.setLength(0); |
| buf.append(tab2).append("LDC "); |
| if (cst instanceof String) { |
| Printer.appendString(buf, (String) cst); |
| } else if (cst instanceof Type) { |
| buf.append(((Type) cst).getDescriptor()).append(".class"); |
| } else { |
| buf.append(cst); |
| } |
| buf.append('\n'); |
| text.add(buf.toString()); |
| } |
| |
| @Override |
| public void visitIincInsn(final int var, final int increment) { |
| buf.setLength(0); |
| buf.append(tab2).append("IINC ").append(var).append(' ') |
| .append(increment).append('\n'); |
| text.add(buf.toString()); |
| } |
| |
| @Override |
| public void visitTableSwitchInsn(final int min, final int max, |
| final Label dflt, final Label... labels) { |
| buf.setLength(0); |
| buf.append(tab2).append("TABLESWITCH\n"); |
| for (int i = 0; i < labels.length; ++i) { |
| buf.append(tab3).append(min + i).append(": "); |
| appendLabel(labels[i]); |
| buf.append('\n'); |
| } |
| buf.append(tab3).append("default: "); |
| appendLabel(dflt); |
| buf.append('\n'); |
| text.add(buf.toString()); |
| } |
| |
| @Override |
| public void visitLookupSwitchInsn(final Label dflt, final int[] keys, |
| final Label[] labels) { |
| buf.setLength(0); |
| buf.append(tab2).append("LOOKUPSWITCH\n"); |
| for (int i = 0; i < labels.length; ++i) { |
| buf.append(tab3).append(keys[i]).append(": "); |
| appendLabel(labels[i]); |
| buf.append('\n'); |
| } |
| buf.append(tab3).append("default: "); |
| appendLabel(dflt); |
| buf.append('\n'); |
| text.add(buf.toString()); |
| } |
| |
| @Override |
| public void visitMultiANewArrayInsn(final String desc, final int dims) { |
| buf.setLength(0); |
| buf.append(tab2).append("MULTIANEWARRAY "); |
| appendDescriptor(FIELD_DESCRIPTOR, desc); |
| buf.append(' ').append(dims).append('\n'); |
| text.add(buf.toString()); |
| } |
| |
| @Override |
| public void visitTryCatchBlock(final Label start, final Label end, |
| final Label handler, final String type) { |
| buf.setLength(0); |
| buf.append(tab2).append("TRYCATCHBLOCK "); |
| appendLabel(start); |
| buf.append(' '); |
| appendLabel(end); |
| buf.append(' '); |
| appendLabel(handler); |
| buf.append(' '); |
| appendDescriptor(INTERNAL_NAME, type); |
| buf.append('\n'); |
| text.add(buf.toString()); |
| } |
| |
| @Override |
| public void visitLocalVariable(final String name, final String desc, |
| final String signature, final Label start, final Label end, |
| final int index) { |
| buf.setLength(0); |
| buf.append(tab2).append("LOCALVARIABLE ").append(name).append(' '); |
| appendDescriptor(FIELD_DESCRIPTOR, desc); |
| buf.append(' '); |
| appendLabel(start); |
| buf.append(' '); |
| appendLabel(end); |
| buf.append(' ').append(index).append('\n'); |
| |
| if (signature != null) { |
| buf.append(tab2); |
| appendDescriptor(FIELD_SIGNATURE, signature); |
| |
| TraceSignatureVisitor sv = new TraceSignatureVisitor(0); |
| SignatureReader r = new SignatureReader(signature); |
| r.acceptType(sv); |
| buf.append(tab2).append("// declaration: ") |
| .append(sv.getDeclaration()).append('\n'); |
| } |
| text.add(buf.toString()); |
| } |
| |
| @Override |
| public void visitLineNumber(final int line, final Label start) { |
| buf.setLength(0); |
| buf.append(tab2).append("LINENUMBER ").append(line).append(' '); |
| appendLabel(start); |
| buf.append('\n'); |
| text.add(buf.toString()); |
| } |
| |
| @Override |
| public void visitMaxs(final int maxStack, final int maxLocals) { |
| buf.setLength(0); |
| buf.append(tab2).append("MAXSTACK = ").append(maxStack).append('\n'); |
| text.add(buf.toString()); |
| |
| buf.setLength(0); |
| buf.append(tab2).append("MAXLOCALS = ").append(maxLocals).append('\n'); |
| text.add(buf.toString()); |
| } |
| |
| @Override |
| public void visitMethodEnd() { |
| } |
| |
| // ------------------------------------------------------------------------ |
| // Common methods |
| // ------------------------------------------------------------------------ |
| |
| /** |
| * Prints a disassembled view of the given annotation. |
| * |
| * @param desc |
| * the class descriptor of the annotation class. |
| * @param visible |
| * <tt>true</tt> if the annotation is visible at runtime. |
| * @return a visitor to visit the annotation values. |
| */ |
| public Textifier visitAnnotation(final String desc, final boolean visible) { |
| buf.setLength(0); |
| buf.append(tab).append('@'); |
| appendDescriptor(FIELD_DESCRIPTOR, desc); |
| buf.append('('); |
| text.add(buf.toString()); |
| Textifier t = createTextifier(); |
| text.add(t.getText()); |
| text.add(visible ? ")\n" : ") // invisible\n"); |
| return t; |
| } |
| |
| /** |
| * Prints a disassembled view of the given attribute. |
| * |
| * @param attr |
| * an attribute. |
| */ |
| public void visitAttribute(final Attribute attr) { |
| buf.setLength(0); |
| buf.append(tab).append("ATTRIBUTE "); |
| appendDescriptor(-1, attr.type); |
| |
| if (attr instanceof Textifiable) { |
| ((Textifiable) attr).textify(buf, null); |
| } else { |
| buf.append(" : unknown\n"); |
| } |
| |
| text.add(buf.toString()); |
| } |
| |
| // ------------------------------------------------------------------------ |
| // Utility methods |
| // ------------------------------------------------------------------------ |
| |
| /** |
| * Creates a new TraceVisitor instance. |
| * |
| * @return a new TraceVisitor. |
| */ |
| protected Textifier createTextifier() { |
| return new Textifier(); |
| } |
| |
| /** |
| * Appends an internal name, a type descriptor or a type signature to |
| * {@link #buf buf}. |
| * |
| * @param type |
| * indicates if desc is an internal name, a field descriptor, a |
| * method descriptor, a class signature, ... |
| * @param desc |
| * an internal name, type descriptor, or type signature. May be |
| * <tt>null</tt>. |
| */ |
| protected void appendDescriptor(final int type, final String desc) { |
| if (type == CLASS_SIGNATURE || type == FIELD_SIGNATURE |
| || type == METHOD_SIGNATURE) { |
| if (desc != null) { |
| buf.append("// signature ").append(desc).append('\n'); |
| } |
| } else { |
| buf.append(desc); |
| } |
| } |
| |
| /** |
| * Appends the name of the given label to {@link #buf buf}. Creates a new |
| * label name if the given label does not yet have one. |
| * |
| * @param l |
| * a label. |
| */ |
| protected void appendLabel(final Label l) { |
| if (labelNames == null) { |
| labelNames = new HashMap<Label, String>(); |
| } |
| String name = labelNames.get(l); |
| if (name == null) { |
| name = "L" + labelNames.size(); |
| labelNames.put(l, name); |
| } |
| buf.append(name); |
| } |
| |
| /** |
| * Appends the information about the given handle to {@link #buf buf}. |
| * |
| * @param h |
| * a handle, non null. |
| */ |
| protected void appendHandle(final Handle h) { |
| buf.append('\n').append(tab3); |
| int tag = h.getTag(); |
| buf.append("// handle kind 0x").append(Integer.toHexString(tag)) |
| .append(" : "); |
| switch (tag) { |
| case Opcodes.H_GETFIELD: |
| buf.append("GETFIELD"); |
| break; |
| case Opcodes.H_GETSTATIC: |
| buf.append("GETSTATIC"); |
| break; |
| case Opcodes.H_PUTFIELD: |
| buf.append("PUTFIELD"); |
| break; |
| case Opcodes.H_PUTSTATIC: |
| buf.append("PUTSTATIC"); |
| break; |
| case Opcodes.H_INVOKEINTERFACE: |
| buf.append("INVOKEINTERFACE"); |
| break; |
| case Opcodes.H_INVOKESPECIAL: |
| buf.append("INVOKESPECIAL"); |
| break; |
| case Opcodes.H_INVOKESTATIC: |
| buf.append("INVOKESTATIC"); |
| break; |
| case Opcodes.H_INVOKEVIRTUAL: |
| buf.append("INVOKEVIRTUAL"); |
| break; |
| case Opcodes.H_NEWINVOKESPECIAL: |
| buf.append("NEWINVOKESPECIAL"); |
| break; |
| } |
| buf.append('\n'); |
| buf.append(tab3); |
| appendDescriptor(INTERNAL_NAME, h.getOwner()); |
| buf.append('.'); |
| buf.append(h.getName()); |
| buf.append('('); |
| appendDescriptor(HANDLE_DESCRIPTOR, h.getDesc()); |
| buf.append(')').append('\n'); |
| } |
| |
| /** |
| * Appends a string representation of the given access modifiers to |
| * {@link #buf buf}. |
| * |
| * @param access |
| * some access modifiers. |
| */ |
| private void appendAccess(final int access) { |
| if ((access & Opcodes.ACC_PUBLIC) != 0) { |
| buf.append("public "); |
| } |
| if ((access & Opcodes.ACC_PRIVATE) != 0) { |
| buf.append("private "); |
| } |
| if ((access & Opcodes.ACC_PROTECTED) != 0) { |
| buf.append("protected "); |
| } |
| if ((access & Opcodes.ACC_FINAL) != 0) { |
| buf.append("final "); |
| } |
| if ((access & Opcodes.ACC_STATIC) != 0) { |
| buf.append("static "); |
| } |
| if ((access & Opcodes.ACC_SYNCHRONIZED) != 0) { |
| buf.append("synchronized "); |
| } |
| if ((access & Opcodes.ACC_VOLATILE) != 0) { |
| buf.append("volatile "); |
| } |
| if ((access & Opcodes.ACC_TRANSIENT) != 0) { |
| buf.append("transient "); |
| } |
| if ((access & Opcodes.ACC_ABSTRACT) != 0) { |
| buf.append("abstract "); |
| } |
| if ((access & Opcodes.ACC_STRICT) != 0) { |
| buf.append("strictfp "); |
| } |
| if ((access & Opcodes.ACC_SYNTHETIC) != 0) { |
| buf.append("synthetic "); |
| } |
| if ((access & Opcodes.ACC_ENUM) != 0) { |
| buf.append("enum "); |
| } |
| } |
| |
| private void appendComa(final int i) { |
| if (i != 0) { |
| buf.append(", "); |
| } |
| } |
| |
| private void appendFrameTypes(final int n, final Object[] o) { |
| for (int i = 0; i < n; ++i) { |
| if (i > 0) { |
| buf.append(' '); |
| } |
| if (o[i] instanceof String) { |
| String desc = (String) o[i]; |
| if (desc.startsWith("[")) { |
| appendDescriptor(FIELD_DESCRIPTOR, desc); |
| } else { |
| appendDescriptor(INTERNAL_NAME, desc); |
| } |
| } else if (o[i] instanceof Integer) { |
| switch (((Integer) o[i]).intValue()) { |
| case 0: |
| appendDescriptor(FIELD_DESCRIPTOR, "T"); |
| break; |
| case 1: |
| appendDescriptor(FIELD_DESCRIPTOR, "I"); |
| break; |
| case 2: |
| appendDescriptor(FIELD_DESCRIPTOR, "F"); |
| break; |
| case 3: |
| appendDescriptor(FIELD_DESCRIPTOR, "D"); |
| break; |
| case 4: |
| appendDescriptor(FIELD_DESCRIPTOR, "J"); |
| break; |
| case 5: |
| appendDescriptor(FIELD_DESCRIPTOR, "N"); |
| break; |
| case 6: |
| appendDescriptor(FIELD_DESCRIPTOR, "U"); |
| break; |
| } |
| } else { |
| appendLabel((Label) o[i]); |
| } |
| } |
| } |
| } |
