java/tools/classdump/classdump.cpp - llvm-archive - Git at Google

 //===-- classdump.cpp - classdump utility -----------------------*- C++ -*-===//
 //
 //                     The LLVM Compiler Infrastructure
 //
 // This file was developed by the LLVM research group and is distributed under
 // the University of Illinois Open Source License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 //
 // This is a sample class reader driver. It is used to drive class
 // reader tests.
 //
 //===----------------------------------------------------------------------===//

 #include <llvm/Java/ClassFile.h>
 #include <llvm/Java/BytecodeParser.h>
 #include <llvm/Support/CommandLine.h>
 #include <llvm/System/Signals.h>

 #include <cstddef>
 #include <iostream>

 using namespace llvm;

 namespace {

   enum DumpType { code, constantPool };

   cl::opt<std::string>
   InputClass(cl::Positional, cl::desc("<input class>"));

   cl::opt<DumpType>
   DumpMode(
     "dumptype",
     cl::desc("Dump type: (default = code)"),
     cl::Prefix,
     cl::values(
       clEnumVal(code,         "code"),
       clEnumVal(constantPool, "constant pool"),
       clEnumValEnd),
     cl::init(code));

   using namespace llvm::Java;

   class ClassDump : public BytecodeParser<ClassDump> {
     const ClassFile* CF;
     std::ostream& Out;

   public:
     ClassDump(const ClassFile* cf, std::ostream& out)
       : CF(cf), Out(out) {

       if (CF->isPublic())
         Out << "public ";
       if (CF->isFinal())
         Out << "final ";

       Out << "class " << CF->getThisClass()->getName()->str() << ' ';

       if (ConstantClass* super = CF->getSuperClass())
         Out << "extends " << super->getName()->str() << ' ';

       if (CF->getNumInterfaces()) {
         Out << "implements " << CF->getInterface(0)->getName()->str();
         for (unsigned i = 1, e = CF->getNumInterfaces(); i != e; ++i)
           Out << ", " << CF->getInterface(i)->getName()->str();
         Out << ' ';
       }
       Out << "{\n";

       const Fields& fields = CF->getFields();
       // Dump static fields.
       for (unsigned i = 0, e = fields.size(); i != e; ++i)
         if (fields[i]->isStatic())
           dumpField(fields[i]);
       // Dump instance fields.
       for (unsigned i = 0, e = fields.size(); i != e; ++i)
         if (!fields[i]->isStatic())
           dumpField(fields[i]);

       const Methods& methods = CF->getMethods();
       for (unsigned i = 0, e = methods.size(); i != e; ++i)
         dumpMethod(methods[i]);

       Out << "\n}\n";
     }

     void dumpField(const Field* F) {
       Out << '\n';
       if (F->isPublic())
         Out << "public ";
       else if (F->isProtected())
         Out << "protected ";
       else if (F->isPrivate())
         Out << "private ";

       if (F->isStatic())
         Out << "static ";

       if (F->isFinal())
         Out << "final ";

       if (F->isTransient())
         Out << "transient ";

       Out << getPrettyString(F->getDescriptor()->str()) << ' '
           << F->getName()->str() << ";\n";
     }

     void dumpMethod(const Method* M) {
       Out << '\n';
       if (M->isPublic())
         Out << "public ";
       else if (M->isProtected())
         Out << "protected ";
       else if (M->isPrivate())
         Out << "private ";

       if (M->isStatic())
         Out << "static ";

       if (M->isAbstract())
         Out << "abstract ";

       if (M->isFinal())
         Out << "final ";

       if (M->isSynchronized())
         Out << "synchronized ";

       std::string Signature = getPrettyString(M->getDescriptor()->str());
       Signature.insert(Signature.find('('), M->getName()->str());

       Out << Signature << ";\n";
       if (CodeAttribute* CodeAttr = M->getCodeAttribute()) {
         Out << "\tCode:";
         parse(CodeAttr->getCode(), 0, CodeAttr->getCodeSize());
         Out << '\n';
       }
     }

     std::string getPrettyString(const std::string& Desc) {
       unsigned I = 0;
       std::string prettyString = getPrettyStringHelper(Desc, I);
       for (unsigned i = 0, e = prettyString.size(); i != e; ++i)
         if (prettyString[i] == '/')
           prettyString[i] = '.';
       return prettyString;
     }

     std::string getPrettyStringHelper(const std::string& Desc, unsigned& I) {
       if (Desc.size() == I)
         return "";

       switch (Desc[I++]) {
       case 'B': return "byte";
       case 'C': return "char";
       case 'D': return "double";
       case 'F': return "float";
       case 'I': return "int";
       case 'J': return "long";
       case 'S': return "short";
       case 'Z': return "boolean";
       case 'V': return "void";
       case 'L': {
         unsigned E = Desc.find(';', I);
         std::string ClassName = Desc.substr(I, E - I);
         I = E + 1;
         return ClassName;
       }
       case '[': {
         std::string ArrayPart;
         ArrayPart += "[]";
         while (Desc[I] == '[') {
           ArrayPart += "[]";
           ++I;
         }

         return getPrettyStringHelper(Desc, I) + ArrayPart;
       }
       case '(': {
         std::string Params;
         while (Desc[I] != ')') {
           if (Desc[I-1] != '(')
             Params += ',';
           Params += getPrettyStringHelper(Desc, I);
         }
         return getPrettyStringHelper(Desc, ++I) + " (" + Params + ')';
       }
       }

       return "";
     }

     /// @brief called before every bytecode
     void pre_inst(unsigned bcI) { Out << "\n\t " << bcI << ":\t"; }
     /// @brief called on ACONST_NULL
     void do_aconst_null() { Out << "aconst_null"; }
     /// @brief called on ICONST_<n>, SIPUSH and BIPUSH
     void do_iconst(int value) {
       if (value == -1)
         Out << "iconst_m1";
       else if (value >=0 && value <= 5)
         Out << "iconst_" << value;
       else if (value >= -128 && value <= 127)
         Out << "bipush " << value;
       else
         Out << "sipush " << value;
     }
     /// @brief called on LCONST_<n>
     void do_lconst(long long value) {
       if (value == 0 || value == 1)
         Out << "lconst_" << value;
       else
         Out << "lconst " << value;
     }
     /// @brief called on FCONST_<n>
     void do_fconst(float value) {
       if (value >= 0 && value <= 2)
         Out << "fconst_" << value;
       else
         Out << "fconst " << value;
     }
     /// @brief called on DCONST_<n>
     void do_dconst(double value) {
       if (value == 0 || value == 1)
         Out << "dconst_" << value;
       else
         Out << "dconst " << value;
     }
     /// @brief called on LDC and LDC_W
     void do_ldc(unsigned index) {
       if (index <= 255)
         Out << "ldc";
       else
         Out << "ldc_w";
       Out <<  "\t#" << index << "; //" << *CF->getConstant(index);
     }
     /// @brief called on LDC2_W
     void do_ldc2(unsigned index) {
       Out << "ldc2_w \t#" << index << "; //" << *CF->getConstant(index);
     }
     /// @brief called on ILOAD and ILOAD_<n>
     void do_iload(unsigned index) {
       if (index <= 3)
         Out << "iload_" << index;
       else
         Out << "iload " << index;
     }
     /// @brief called on LLOAD and LLOAD_<n>
     void do_lload(unsigned index) {
       if (index <= 3)
         Out << "lload_" << index;
       else
         Out << "lload " << index;
     }
     /// @brief called on FLOAD and FLOAD_<n>
     void do_fload(unsigned index) {
       if (index <= 3)
         Out << "fload_" << index;
       else
         Out << "fload " << index;
     }
     /// @brief called on DLOAD and DLOAD_<n>
     void do_dload(unsigned index) {
       if (index <= 3)
         Out << "dload_" << index;
       else
         Out << "dload " << index;
     }
     /// @brief called on ALOAD and ALOAD_<n>
     void do_aload(unsigned index) {
       if (index <= 3)
         Out << "aload_" << index;
       else
         Out << "aload " << index;
     }
     /// @brief called on IALOAD
     void do_iaload() { Out << "iaload"; }
     /// @brief called on LALOAD
     void do_laload() { Out << "laload"; }
     /// @brief called on FALOAD
     void do_faload() { Out << "faload"; }
     /// @brief called on DALOAD
     void do_daload() { Out << "daload"; }
     /// @brief called on AALOAD
     void do_aaload() { Out << "aaload"; }
     /// @brief called on BALOAD
     void do_baload() { Out << "baload"; }
     /// @brief called on CALOAD
     void do_caload() { Out << "caload"; }
     /// @brief called on SALOAD
     void do_saload() { Out << "saload"; }
     /// @brief called on ISTORE and ISTORE_<n>
     void do_istore(unsigned index) {
       if (index <= 3)
         Out << "istore_" << index;
       else
         Out << "istore " << index;
     }
     /// @brief called on LSTORE and LSTORE_<n>
     void do_lstore(unsigned index) {
       if (index <= 3)
         Out << "lstore_" << index;
       else
         Out << "lstore " << index;
     }
     /// @brief called on FSTORE and FSTORE_<n>
     void do_fstore(unsigned index) {
       if (index <= 3)
         Out << "fstore_" << index;
       else
         Out << "fstore " << index;
     }
     /// @brief called on DSTORE and DSTORE_<n>
     void do_dstore(unsigned index) {
       if (index <= 3)
         Out << "dstore_" << index;
       else
         Out << "dstore " << index;
     }
     /// @brief called on ASTORE and ASTORE_<n>
     void do_astore(unsigned index) {
       if (index <= 3)
         Out << "astore_" << index;
       else
         Out << "astore " << index;
     }
     /// @brief called on IASTORE
     void do_iastore() { Out << "iastore"; }
     /// @brief called on LASTORE
     void do_lastore() { Out << "lastore"; }
     /// @brief called on FASTORE
     void do_fastore() { Out << "fastore"; }
     /// @brief called on DASTORE
     void do_dastore() { Out << "dastore"; }
     /// @brief called on AASTORE
     void do_aastore() { Out << "aastore"; }
     /// @brief called on BASTORE
     void do_bastore() { Out << "bastore"; }
     /// @brief called on CASTORE
     void do_castore() { Out << "castore"; }
     /// @brief called on SASTORE
     void do_sastore() { Out << "sastore"; }
     /// @brief called on POP
     void do_pop() { Out << "pop"; }
     /// @brief called on POP2
     void do_pop2() { Out << "pop2"; }
     /// @brief called on DUP
     void do_dup() { Out << "dup"; }
     /// @brief called on DUP_X1
     void do_dup_x1() { Out << "dup_x1"; }
     /// @brief called on DUP_X2
     void do_dup_x2() { Out << "dup_x2"; }
     /// @brief called on DUP2
     void do_dup2() { Out << "dup2"; }
     /// @brief called on DUP2_X1
     void do_dup2_x1() { Out << "dup2_x1"; }
     /// @brief called on DUP2_X2
     void do_dup2_x2() { Out << "dup2_x2"; }
     /// @brief called on SWAP
     void do_swap() { Out << "swap"; }
     /// @brief called on IADD
     void do_iadd() { Out << "iadd"; }
     /// @brief called on LADD
     void do_ladd() { Out << "ladd"; }
     /// @brief called on FADD
     void do_fadd() { Out << "fadd"; }
     /// @brief called on DADD
     void do_dadd() { Out << "dadd"; }
     /// @brief called on ISUB
     void do_isub() { Out << "isub"; }
     /// @brief called on LSUB
     void do_lsub() { Out << "lsub"; }
     /// @brief called on FSUB
     void do_fsub() { Out << "fsub"; }
     /// @brief called on DSUB
     void do_dsub() { Out << "dsub"; }
     /// @brief called on IMUL
     void do_imul() { Out << "imul"; }
     /// @brief called on LMUL
     void do_lmul() { Out << "lmul"; }
     /// @brief called on FMUL
     void do_fmul() { Out << "fmul"; }
     /// @brief called on DMUL
     void do_dmul() { Out << "dmul"; }
     /// @brief called on IDIV
     void do_idiv() { Out << "idiv"; }
     /// @brief called on LDIV
     void do_ldiv() { Out << "ldiv"; }
     /// @brief called on FDIV
     void do_fdiv() { Out << "fdiv"; }
     /// @brief called on DDIV
     void do_ddiv() { Out << "ddiv"; }
     /// @brief called on IREM
     void do_irem() { Out << "irem"; }
     /// @brief called on LREM
     void do_lrem() { Out << "lrem"; }
     /// @brief called on FREM
     void do_frem() { Out << "frem"; }
     /// @brief called on DREM
     void do_drem() { Out << "drem"; }
     /// @brief called on INEG
     void do_ineg() { Out << "ineg"; }
     /// @brief called on LNEG
     void do_lneg() { Out << "lneg"; }
     /// @brief called on FNEG
     void do_fneg() { Out << "fneg"; }
     /// @brief called on DNEG
     void do_dneg() { Out << "dneg"; }
     /// @brief called on ISHL
     void do_ishl() { Out << "ishl"; }
     /// @brief called on LSHL
     void do_lshl() { Out << "lshl"; }
     /// @brief called on ISHR
     void do_ishr() { Out << "ishr"; }
     /// @brief called on LSHR
     void do_lshr() { Out << "lshr"; }
     /// @brief called on IUSHR
     void do_iushr() { Out << "iushr"; }
     /// @brief called on LUSHR
     void do_lushr() { Out << "lushr"; }
     /// @brief called on IAND
     void do_iand() { Out << "iand"; }
     /// @brief called on LAND
     void do_land() { Out << "land"; }
     /// @brief called on IOR
     void do_ior() { Out << "ior"; }
     /// @brief called on LOR
     void do_lor() { Out << "lor"; }
     /// @brief called on IXOR
     void do_ixor() { Out << "ixor"; }
     /// @brief called on LXOR
     void do_lxor() { Out << "lxor"; }
     /// @brief called on IINC
     void do_iinc(unsigned index, int amount) {
       Out << "iinc " << index << ", " << amount;
     }
     /// @brief called on I2L
     void do_i2l() { Out << "i2l"; }
     /// @brief called on I2F
     void do_i2f() { Out << "i2f"; }
     /// @brief called on I2D
     void do_i2d() { Out << "i2d"; }
     /// @brief called on L2I
     void do_l2i() { Out << "l2i"; }
     /// @brief called on L2F
     void do_l2f() { Out << "l2f"; }
     /// @brief called on L2D
     void do_l2d() { Out << "l2d"; }
     /// @brief called on F2I
     void do_f2i() { Out << "f2i"; }
     /// @brief called on F2L
     void do_f2l() { Out << "f2l"; }
     /// @brief called on F2D
     void do_f2d() { Out << "f2d"; }
     /// @brief called on D2I
     void do_d2i() { Out << "d2i"; }
     /// @brief called on D2L
     void do_d2l() { Out << "d2l"; }
     /// @brief called on D2F
     void do_d2f() { Out << "d2f"; }
     /// @brief called on I2B
     void do_i2b() { Out << "i2b"; }
     /// @brief called on I2C
     void do_i2c() { Out << "i2c"; }
     /// @brief called on I2S
     void do_i2s() { Out << "i2s"; }
     /// @brief called on LCMP
     void do_lcmp() { Out << "lcmp"; }
     /// @brief called on FCMPL
     void do_fcmpl() { Out << "fcmpl"; }
     /// @brief called on DCMPL
     void do_dcmpl() { Out << "dcmpl"; }
     /// @brief called on FCMPG
     void do_fcmpg() { Out << "fcmpg"; }
     /// @brief called on DCMPG
     void do_dcmpg() { Out << "dcmpg"; }
     /// @brief called on IFEQ
     void do_ifeq(unsigned t, unsigned f) { Out << "ifeq " << t; }
     /// @brief called on IFNE
     void do_ifne(unsigned t, unsigned f) { Out << "ifne " << t; }
     /// @brief called on IFLT
     void do_iflt(unsigned t, unsigned f) { Out << "iflt " << t; }
     /// @brief called on IFGE
     void do_ifge(unsigned t, unsigned f) { Out << "ifge " << t; }
     /// @brief called on IFGT
     void do_ifgt(unsigned t, unsigned f) { Out << "ifgt " << t; }
     /// @brief called on IFLE
     void do_ifle(unsigned t, unsigned f) { Out << "ifle " << t; }
     /// @brief called on IF_ICMPEQ
     void do_if_icmpeq(unsigned t, unsigned f) { Out << "if_icmpeq " << t; }
     /// @brief called on IF_ICMPNE
     void do_if_icmpne(unsigned t, unsigned f) { Out << "if_icmpne " << t; }
     /// @brief called on IF_ICMPLT
     void do_if_icmplt(unsigned t, unsigned f) { Out << "if_icmplt " << t; }
     /// @brief called on IF_ICMPGE
     void do_if_icmpge(unsigned t, unsigned f) { Out << "if_icmpge " << t; }
     /// @brief called on IF_ICMPGT
     void do_if_icmpgt(unsigned t, unsigned f) { Out << "if_icmpgt " << t; }
     /// @brief called on IF_ICMPLE
     void do_if_icmple(unsigned t, unsigned f) { Out << "if_icmple " << t; }
     /// @brief called on IF_ACMPEQ
     void do_if_acmpeq(unsigned t, unsigned f) { Out << "if_acmpeq " << t; }
     /// @brief called on IF_ACMPNE
     void do_if_acmpne(unsigned t, unsigned f) { Out << "if_acmpne " << t; }
     /// @brief called on GOTO and GOTO_W
     void do_goto(unsigned target) { Out << "goto " << target; }
     /// @brief called on JSR and JSR_W
     void do_jsr(unsigned target, unsigned retAddress) { abort(); }
     /// @brief called on RET
     void do_ret(unsigned index) { abort(); }
     /// @brief called on TABLESWITCH
     void do_tableswitch(unsigned defTarget, const SwitchCases& sw) {
       Out << "tableswitch{ //" << sw.front().first << " to " << sw.back().first;
       for (unsigned i = 0, e = sw.size(); i != e; ++i)
         Out << "\n\t\t\t" << sw[i].first << ": " << sw[i].second << ';';
       Out << ";\n\t\t\tdefault: " << defTarget << " }";
     }
     /// @brief called on LOOKUPSWITCH
     void do_lookupswitch(unsigned defTarget, const SwitchCases& sw) { abort(); }
     /// @brief called on IRETURN
     void do_ireturn() { Out << "ireturn"; }
     /// @brief called on LRETURN
     void do_lreturn() { Out << "lreturn"; }
     /// @brief called on FRETURN
     void do_freturn() { Out << "freturn"; }
     /// @brief called on DRETURN
     void do_dreturn() { Out << "dreturn"; }
     /// @brief called on ARETURN
     void do_areturn() { Out << "areturn"; }
     /// @brief called on RETURN
     void do_return() { Out << "return"; }
     /// @brief called on GETSTATIC
     void do_getstatic(unsigned index) {
       Out << "getstatic #" << index << "; //Field ";
       printMemberRef(index);
     }
     /// @brief called on PUTSTATIC
     void do_putstatic(unsigned index) {
       Out << "putstatic #" << index << "; //Field ";
       printMemberRef(index);
     }
     /// @brief called on GETFIELD
     void do_getfield(unsigned index) {
       Out << "getfield #" << index << "; //Field ";
       printMemberRef(index);
     }
     /// @brief called on PUTFIELD
     void do_putfield(unsigned index) {
       Out << "putfield #" << index << "; //Field ";
       printMemberRef(index);
     }
     /// @brief called on INVOKEVIRTUAL
     void do_invokevirtual(unsigned index) {
       Out << "invokevirtual #" << index << "; //Method ";
       printMemberRef(index);
     }
     /// @brief called on INVOKESPECIAL
     void do_invokespecial(unsigned index) {
       Out << "invokespecial #" << index << "; //Method ";
       printMemberRef(index);
     }
     /// @brief called on INVOKESTATIC
     void do_invokestatic(unsigned index) {
       Out << "invokestatic #" << index << "; //Method ";
       printMemberRef(index);
     }
     /// @brief called on INVOKEINTERFACE
     void do_invokeinterface(unsigned index) {
       Out << "invokeinterface #" << index << "; //InterfaceMethod ";
       printMemberRef(index);
     }
     /// @brief called on NEW
     void do_new(unsigned index) {
       Out << "new #" << index << "; //class ";
       printClassRef(index);
     }
     /// @brief called on NEWARRAY
     void do_newarray(JType type) {
       Out << "newarray ";
       switch (type) {
       case BOOLEAN: Out << "boolean"; break;
       case CHAR: Out << "char"; break;
       case FLOAT: Out << "float"; break;
       case DOUBLE: Out << "double"; break;
       case BYTE: Out << "byte"; break;
       case SHORT: Out << "short"; break;
       case INT: Out << "int"; break;
       case LONG: Out << "long"; break;
       default: assert(0 && "Unknown type for newarray!");
       }
     }

     /// @brief called on ANEWARRAY
     void do_anewarray(unsigned index) {
       Out << "anewarray #" << index << "; //class ";
       printClassRef(index);
     }
     /// @brief called on ARRAYLENGTH
     void do_arraylength() { Out << "arraylength"; }
     /// @brief called on ATHROW
     void do_athrow() { Out << "athrow"; }
     /// @brief called on CHECKCAST
     void do_checkcast(unsigned index) {
       Out << "checkcast #" << index
           << "; //class ";
       printClassRef(index);
     }
     /// @brief called on INSTANCEOF
     void do_instanceof(unsigned index) {
       Out << "instanceof #" << index
           << "; //class ";
       printClassRef(index);
     }
     /// @brief called on MONITORENTER
     void do_monitorenter() { Out << "monitorenter"; }
     /// @brief called on MONITOREXIT
     void do_monitorexit() { Out << "monitorexit"; }
     /// @brief called on MULTIANEWARRAY
     void do_multianewarray(unsigned index, unsigned dims) { }
     /// @brief called on IFNULL
     void do_ifnull(unsigned t, unsigned f) { Out << "ifnull " << t; }
     /// @brief called on IFNONNULL
     void do_ifnonnull(unsigned t, unsigned f) { Out << "ifnonnull " << t; }

     void printMemberRef(unsigned index) {
       ConstantMemberRef* Ref = CF->getConstantMemberRef(index);
       ConstantClass* Class = Ref->getClass();
       if (Class != CF->getThisClass())
         Out << Class->getName()->str() << '.';
       Out << Ref->getNameAndType()->getName()->str()
           << ':'
           << Ref->getNameAndType()->getDescriptor()->str();
     }

     void printClassRef(unsigned index) {
       const std::string& FQCN = CF->getConstantClass(index)->getName()->str();
       Out << FQCN.substr(FQCN.rfind('/')+1);
     }
   };
 }

 int main(int argc, char* argv[])
 {
   sys::PrintStackTraceOnErrorSignal();
   cl::ParseCommandLineOptions(argc, argv,
                               "class dump utility");

   try {
     const Java::ClassFile* cf(Java::ClassFile::get(InputClass));

     switch (DumpMode) {
     default:
       std::cerr << "no dump type selected";
       abort();
     case code: {
       ClassDump(cf, std::cout);
       break;
     }
     case constantPool: {
       for (unsigned i = 0, e = cf->getNumConstants(); i != e; ++i) {
         Constant* c = cf->getConstant(i);
         std::cout.width(6);
         std::cout << i << ": ";
         std::cout.width(0);
         if (c)
           std::cout << *cf->getConstant(i);
         else
           std::cout << "empty";
         std::cout << '\n';
       }
       break;
     }
     }
   }
   catch (std::exception& e) {
     std::cerr << e.what() << '\n';
     return EXIT_FAILURE;
   }

   return EXIT_SUCCESS;
 }
	//===-- classdump.cpp - classdump utility ------------------------ C++ --===//
	//
	// The LLVM Compiler Infrastructure
	//
	// This file was developed by the LLVM research group and is distributed under
	// the University of Illinois Open Source License. See LICENSE.TXT for details.
	//
	//===----------------------------------------------------------------------===//
	//
	// This is a sample class reader driver. It is used to drive class
	// reader tests.
	//
	//===----------------------------------------------------------------------===//

	#include <llvm/Java/ClassFile.h>
	#include <llvm/Java/BytecodeParser.h>
	#include <llvm/Support/CommandLine.h>
	#include <llvm/System/Signals.h>

	#include <cstddef>
	#include <iostream>

	using namespace llvm;

	namespace {

	enum DumpType { code, constantPool };

	cl::opt<std::string>
	InputClass(cl::Positional, cl::desc("<input class>"));

	cl::opt<DumpType>
	DumpMode(
	"dumptype",
	cl::desc("Dump type: (default = code)"),
	cl::Prefix,
	cl::values(
	clEnumVal(code, "code"),
	clEnumVal(constantPool, "constant pool"),
	clEnumValEnd),
	cl::init(code));

	using namespace llvm::Java;

	class ClassDump : public BytecodeParser<ClassDump> {
	const ClassFile* CF;
	std::ostream& Out;

	public:
	ClassDump(const ClassFile* cf, std::ostream& out)
	: CF(cf), Out(out) {

	if (CF->isPublic())
	Out << "public ";
	if (CF->isFinal())
	Out << "final ";

	Out << "class " << CF->getThisClass()->getName()->str() << ' ';

	if (ConstantClass* super = CF->getSuperClass())
	Out << "extends " << super->getName()->str() << ' ';

	if (CF->getNumInterfaces()) {
	Out << "implements " << CF->getInterface(0)->getName()->str();
	for (unsigned i = 1, e = CF->getNumInterfaces(); i != e; ++i)
	Out << ", " << CF->getInterface(i)->getName()->str();
	Out << ' ';
	}
	Out << "{\n";

	const Fields& fields = CF->getFields();
	// Dump static fields.
	for (unsigned i = 0, e = fields.size(); i != e; ++i)
	if (fields[i]->isStatic())
	dumpField(fields[i]);
	// Dump instance fields.
	for (unsigned i = 0, e = fields.size(); i != e; ++i)
	if (!fields[i]->isStatic())
	dumpField(fields[i]);

	const Methods& methods = CF->getMethods();
	for (unsigned i = 0, e = methods.size(); i != e; ++i)
	dumpMethod(methods[i]);

	Out << "\n}\n";
	}

	void dumpField(const Field* F) {
	Out << '\n';
	if (F->isPublic())
	Out << "public ";
	else if (F->isProtected())
	Out << "protected ";
	else if (F->isPrivate())
	Out << "private ";

	if (F->isStatic())
	Out << "static ";

	if (F->isFinal())
	Out << "final ";

	if (F->isTransient())
	Out << "transient ";

	Out << getPrettyString(F->getDescriptor()->str()) << ' '
	<< F->getName()->str() << ";\n";
	}

	void dumpMethod(const Method* M) {
	Out << '\n';
	if (M->isPublic())
	Out << "public ";
	else if (M->isProtected())
	Out << "protected ";
	else if (M->isPrivate())
	Out << "private ";

	if (M->isStatic())
	Out << "static ";

	if (M->isAbstract())
	Out << "abstract ";

	if (M->isFinal())
	Out << "final ";

	if (M->isSynchronized())
	Out << "synchronized ";

	std::string Signature = getPrettyString(M->getDescriptor()->str());
	Signature.insert(Signature.find('('), M->getName()->str());

	Out << Signature << ";\n";
	if (CodeAttribute* CodeAttr = M->getCodeAttribute()) {
	Out << "\tCode:";
	parse(CodeAttr->getCode(), 0, CodeAttr->getCodeSize());
	Out << '\n';
	}
	}

	std::string getPrettyString(const std::string& Desc) {
	unsigned I = 0;
	std::string prettyString = getPrettyStringHelper(Desc, I);
	for (unsigned i = 0, e = prettyString.size(); i != e; ++i)
	if (prettyString[i] == '/')
	prettyString[i] = '.';
	return prettyString;
	}

	std::string getPrettyStringHelper(const std::string& Desc, unsigned& I) {
	if (Desc.size() == I)
	return "";

	switch (Desc[I++]) {
	case 'B': return "byte";
	case 'C': return "char";
	case 'D': return "double";
	case 'F': return "float";
	case 'I': return "int";
	case 'J': return "long";
	case 'S': return "short";
	case 'Z': return "boolean";
	case 'V': return "void";
	case 'L': {
	unsigned E = Desc.find(';', I);
	std::string ClassName = Desc.substr(I, E - I);
	I = E + 1;
	return ClassName;
	}
	case '[': {
	std::string ArrayPart;
	ArrayPart += "[]";
	while (Desc[I] == '[') {
	ArrayPart += "[]";
	++I;
	}

	return getPrettyStringHelper(Desc, I) + ArrayPart;
	}
	case '(': {
	std::string Params;
	while (Desc[I] != ')') {
	if (Desc[I-1] != '(')
	Params += ',';
	Params += getPrettyStringHelper(Desc, I);
	}
	return getPrettyStringHelper(Desc, ++I) + " (" + Params + ')';
	}
	}

	return "";
	}

	/// @brief called before every bytecode
	void pre_inst(unsigned bcI) { Out << "\n\t " << bcI << ":\t"; }
	/// @brief called on ACONST_NULL
	void do_aconst_null() { Out << "aconst_null"; }
	/// @brief called on ICONST_<n>, SIPUSH and BIPUSH
	void do_iconst(int value) {
	if (value == -1)
	Out << "iconst_m1";
	else if (value >=0 && value <= 5)
	Out << "iconst_" << value;
	else if (value >= -128 && value <= 127)
	Out << "bipush " << value;
	else
	Out << "sipush " << value;
	}
	/// @brief called on LCONST_<n>
	void do_lconst(long long value) {
	if (value == 0 \|\| value == 1)
	Out << "lconst_" << value;
	else
	Out << "lconst " << value;
	}
	/// @brief called on FCONST_<n>
	void do_fconst(float value) {
	if (value >= 0 && value <= 2)
	Out << "fconst_" << value;
	else
	Out << "fconst " << value;
	}
	/// @brief called on DCONST_<n>
	void do_dconst(double value) {
	if (value == 0 \|\| value == 1)
	Out << "dconst_" << value;
	else
	Out << "dconst " << value;
	}
	/// @brief called on LDC and LDC_W
	void do_ldc(unsigned index) {
	if (index <= 255)
	Out << "ldc";
	else
	Out << "ldc_w";
	Out << "\t#" << index << "; //" << *CF->getConstant(index);
	}
	/// @brief called on LDC2_W
	void do_ldc2(unsigned index) {
	Out << "ldc2_w \t#" << index << "; //" << *CF->getConstant(index);
	}
	/// @brief called on ILOAD and ILOAD_<n>
	void do_iload(unsigned index) {
	if (index <= 3)
	Out << "iload_" << index;
	else
	Out << "iload " << index;
	}
	/// @brief called on LLOAD and LLOAD_<n>
	void do_lload(unsigned index) {
	if (index <= 3)
	Out << "lload_" << index;
	else
	Out << "lload " << index;
	}
	/// @brief called on FLOAD and FLOAD_<n>
	void do_fload(unsigned index) {
	if (index <= 3)
	Out << "fload_" << index;
	else
	Out << "fload " << index;
	}
	/// @brief called on DLOAD and DLOAD_<n>
	void do_dload(unsigned index) {
	if (index <= 3)
	Out << "dload_" << index;
	else
	Out << "dload " << index;
	}
	/// @brief called on ALOAD and ALOAD_<n>
	void do_aload(unsigned index) {
	if (index <= 3)
	Out << "aload_" << index;
	else
	Out << "aload " << index;
	}
	/// @brief called on IALOAD
	void do_iaload() { Out << "iaload"; }
	/// @brief called on LALOAD
	void do_laload() { Out << "laload"; }
	/// @brief called on FALOAD
	void do_faload() { Out << "faload"; }
	/// @brief called on DALOAD
	void do_daload() { Out << "daload"; }
	/// @brief called on AALOAD
	void do_aaload() { Out << "aaload"; }
	/// @brief called on BALOAD
	void do_baload() { Out << "baload"; }
	/// @brief called on CALOAD
	void do_caload() { Out << "caload"; }
	/// @brief called on SALOAD
	void do_saload() { Out << "saload"; }
	/// @brief called on ISTORE and ISTORE_<n>
	void do_istore(unsigned index) {
	if (index <= 3)
	Out << "istore_" << index;
	else
	Out << "istore " << index;
	}
	/// @brief called on LSTORE and LSTORE_<n>
	void do_lstore(unsigned index) {
	if (index <= 3)
	Out << "lstore_" << index;
	else
	Out << "lstore " << index;
	}
	/// @brief called on FSTORE and FSTORE_<n>
	void do_fstore(unsigned index) {
	if (index <= 3)
	Out << "fstore_" << index;
	else
	Out << "fstore " << index;
	}
	/// @brief called on DSTORE and DSTORE_<n>
	void do_dstore(unsigned index) {
	if (index <= 3)
	Out << "dstore_" << index;
	else
	Out << "dstore " << index;
	}
	/// @brief called on ASTORE and ASTORE_<n>
	void do_astore(unsigned index) {
	if (index <= 3)
	Out << "astore_" << index;
	else
	Out << "astore " << index;
	}
	/// @brief called on IASTORE
	void do_iastore() { Out << "iastore"; }
	/// @brief called on LASTORE
	void do_lastore() { Out << "lastore"; }
	/// @brief called on FASTORE
	void do_fastore() { Out << "fastore"; }
	/// @brief called on DASTORE
	void do_dastore() { Out << "dastore"; }
	/// @brief called on AASTORE
	void do_aastore() { Out << "aastore"; }
	/// @brief called on BASTORE
	void do_bastore() { Out << "bastore"; }
	/// @brief called on CASTORE
	void do_castore() { Out << "castore"; }
	/// @brief called on SASTORE
	void do_sastore() { Out << "sastore"; }
	/// @brief called on POP
	void do_pop() { Out << "pop"; }
	/// @brief called on POP2
	void do_pop2() { Out << "pop2"; }
	/// @brief called on DUP
	void do_dup() { Out << "dup"; }
	/// @brief called on DUP_X1
	void do_dup_x1() { Out << "dup_x1"; }
	/// @brief called on DUP_X2
	void do_dup_x2() { Out << "dup_x2"; }
	/// @brief called on DUP2
	void do_dup2() { Out << "dup2"; }
	/// @brief called on DUP2_X1
	void do_dup2_x1() { Out << "dup2_x1"; }
	/// @brief called on DUP2_X2
	void do_dup2_x2() { Out << "dup2_x2"; }
	/// @brief called on SWAP
	void do_swap() { Out << "swap"; }
	/// @brief called on IADD
	void do_iadd() { Out << "iadd"; }
	/// @brief called on LADD
	void do_ladd() { Out << "ladd"; }
	/// @brief called on FADD
	void do_fadd() { Out << "fadd"; }
	/// @brief called on DADD
	void do_dadd() { Out << "dadd"; }
	/// @brief called on ISUB
	void do_isub() { Out << "isub"; }
	/// @brief called on LSUB
	void do_lsub() { Out << "lsub"; }
	/// @brief called on FSUB
	void do_fsub() { Out << "fsub"; }
	/// @brief called on DSUB
	void do_dsub() { Out << "dsub"; }
	/// @brief called on IMUL
	void do_imul() { Out << "imul"; }
	/// @brief called on LMUL
	void do_lmul() { Out << "lmul"; }
	/// @brief called on FMUL
	void do_fmul() { Out << "fmul"; }
	/// @brief called on DMUL
	void do_dmul() { Out << "dmul"; }
	/// @brief called on IDIV
	void do_idiv() { Out << "idiv"; }
	/// @brief called on LDIV
	void do_ldiv() { Out << "ldiv"; }
	/// @brief called on FDIV
	void do_fdiv() { Out << "fdiv"; }
	/// @brief called on DDIV
	void do_ddiv() { Out << "ddiv"; }
	/// @brief called on IREM
	void do_irem() { Out << "irem"; }
	/// @brief called on LREM
	void do_lrem() { Out << "lrem"; }
	/// @brief called on FREM
	void do_frem() { Out << "frem"; }
	/// @brief called on DREM
	void do_drem() { Out << "drem"; }
	/// @brief called on INEG
	void do_ineg() { Out << "ineg"; }
	/// @brief called on LNEG
	void do_lneg() { Out << "lneg"; }
	/// @brief called on FNEG
	void do_fneg() { Out << "fneg"; }
	/// @brief called on DNEG
	void do_dneg() { Out << "dneg"; }
	/// @brief called on ISHL
	void do_ishl() { Out << "ishl"; }
	/// @brief called on LSHL
	void do_lshl() { Out << "lshl"; }
	/// @brief called on ISHR
	void do_ishr() { Out << "ishr"; }
	/// @brief called on LSHR
	void do_lshr() { Out << "lshr"; }
	/// @brief called on IUSHR
	void do_iushr() { Out << "iushr"; }
	/// @brief called on LUSHR
	void do_lushr() { Out << "lushr"; }
	/// @brief called on IAND
	void do_iand() { Out << "iand"; }
	/// @brief called on LAND
	void do_land() { Out << "land"; }
	/// @brief called on IOR
	void do_ior() { Out << "ior"; }
	/// @brief called on LOR
	void do_lor() { Out << "lor"; }
	/// @brief called on IXOR
	void do_ixor() { Out << "ixor"; }
	/// @brief called on LXOR
	void do_lxor() { Out << "lxor"; }
	/// @brief called on IINC
	void do_iinc(unsigned index, int amount) {
	Out << "iinc " << index << ", " << amount;
	}
	/// @brief called on I2L
	void do_i2l() { Out << "i2l"; }
	/// @brief called on I2F
	void do_i2f() { Out << "i2f"; }
	/// @brief called on I2D
	void do_i2d() { Out << "i2d"; }
	/// @brief called on L2I
	void do_l2i() { Out << "l2i"; }
	/// @brief called on L2F
	void do_l2f() { Out << "l2f"; }
	/// @brief called on L2D
	void do_l2d() { Out << "l2d"; }
	/// @brief called on F2I
	void do_f2i() { Out << "f2i"; }
	/// @brief called on F2L
	void do_f2l() { Out << "f2l"; }
	/// @brief called on F2D
	void do_f2d() { Out << "f2d"; }
	/// @brief called on D2I
	void do_d2i() { Out << "d2i"; }
	/// @brief called on D2L
	void do_d2l() { Out << "d2l"; }
	/// @brief called on D2F
	void do_d2f() { Out << "d2f"; }
	/// @brief called on I2B
	void do_i2b() { Out << "i2b"; }
	/// @brief called on I2C
	void do_i2c() { Out << "i2c"; }
	/// @brief called on I2S
	void do_i2s() { Out << "i2s"; }
	/// @brief called on LCMP
	void do_lcmp() { Out << "lcmp"; }
	/// @brief called on FCMPL
	void do_fcmpl() { Out << "fcmpl"; }
	/// @brief called on DCMPL
	void do_dcmpl() { Out << "dcmpl"; }
	/// @brief called on FCMPG
	void do_fcmpg() { Out << "fcmpg"; }
	/// @brief called on DCMPG
	void do_dcmpg() { Out << "dcmpg"; }
	/// @brief called on IFEQ
	void do_ifeq(unsigned t, unsigned f) { Out << "ifeq " << t; }
	/// @brief called on IFNE
	void do_ifne(unsigned t, unsigned f) { Out << "ifne " << t; }
	/// @brief called on IFLT
	void do_iflt(unsigned t, unsigned f) { Out << "iflt " << t; }
	/// @brief called on IFGE
	void do_ifge(unsigned t, unsigned f) { Out << "ifge " << t; }
	/// @brief called on IFGT
	void do_ifgt(unsigned t, unsigned f) { Out << "ifgt " << t; }
	/// @brief called on IFLE
	void do_ifle(unsigned t, unsigned f) { Out << "ifle " << t; }
	/// @brief called on IF_ICMPEQ
	void do_if_icmpeq(unsigned t, unsigned f) { Out << "if_icmpeq " << t; }
	/// @brief called on IF_ICMPNE
	void do_if_icmpne(unsigned t, unsigned f) { Out << "if_icmpne " << t; }
	/// @brief called on IF_ICMPLT
	void do_if_icmplt(unsigned t, unsigned f) { Out << "if_icmplt " << t; }
	/// @brief called on IF_ICMPGE
	void do_if_icmpge(unsigned t, unsigned f) { Out << "if_icmpge " << t; }
	/// @brief called on IF_ICMPGT
	void do_if_icmpgt(unsigned t, unsigned f) { Out << "if_icmpgt " << t; }
	/// @brief called on IF_ICMPLE
	void do_if_icmple(unsigned t, unsigned f) { Out << "if_icmple " << t; }
	/// @brief called on IF_ACMPEQ
	void do_if_acmpeq(unsigned t, unsigned f) { Out << "if_acmpeq " << t; }
	/// @brief called on IF_ACMPNE
	void do_if_acmpne(unsigned t, unsigned f) { Out << "if_acmpne " << t; }
	/// @brief called on GOTO and GOTO_W
	void do_goto(unsigned target) { Out << "goto " << target; }
	/// @brief called on JSR and JSR_W
	void do_jsr(unsigned target, unsigned retAddress) { abort(); }
	/// @brief called on RET
	void do_ret(unsigned index) { abort(); }
	/// @brief called on TABLESWITCH
	void do_tableswitch(unsigned defTarget, const SwitchCases& sw) {
	Out << "tableswitch{ //" << sw.front().first << " to " << sw.back().first;
	for (unsigned i = 0, e = sw.size(); i != e; ++i)
	Out << "\n\t\t\t" << sw[i].first << ": " << sw[i].second << ';';
	Out << ";\n\t\t\tdefault: " << defTarget << " }";
	}
	/// @brief called on LOOKUPSWITCH
	void do_lookupswitch(unsigned defTarget, const SwitchCases& sw) { abort(); }
	/// @brief called on IRETURN
	void do_ireturn() { Out << "ireturn"; }
	/// @brief called on LRETURN
	void do_lreturn() { Out << "lreturn"; }
	/// @brief called on FRETURN
	void do_freturn() { Out << "freturn"; }
	/// @brief called on DRETURN
	void do_dreturn() { Out << "dreturn"; }
	/// @brief called on ARETURN
	void do_areturn() { Out << "areturn"; }
	/// @brief called on RETURN
	void do_return() { Out << "return"; }
	/// @brief called on GETSTATIC
	void do_getstatic(unsigned index) {
	Out << "getstatic #" << index << "; //Field ";
	printMemberRef(index);
	}
	/// @brief called on PUTSTATIC
	void do_putstatic(unsigned index) {
	Out << "putstatic #" << index << "; //Field ";
	printMemberRef(index);
	}
	/// @brief called on GETFIELD
	void do_getfield(unsigned index) {
	Out << "getfield #" << index << "; //Field ";
	printMemberRef(index);
	}
	/// @brief called on PUTFIELD
	void do_putfield(unsigned index) {
	Out << "putfield #" << index << "; //Field ";
	printMemberRef(index);
	}
	/// @brief called on INVOKEVIRTUAL
	void do_invokevirtual(unsigned index) {
	Out << "invokevirtual #" << index << "; //Method ";
	printMemberRef(index);
	}
	/// @brief called on INVOKESPECIAL
	void do_invokespecial(unsigned index) {
	Out << "invokespecial #" << index << "; //Method ";
	printMemberRef(index);
	}
	/// @brief called on INVOKESTATIC
	void do_invokestatic(unsigned index) {
	Out << "invokestatic #" << index << "; //Method ";
	printMemberRef(index);
	}
	/// @brief called on INVOKEINTERFACE
	void do_invokeinterface(unsigned index) {
	Out << "invokeinterface #" << index << "; //InterfaceMethod ";
	printMemberRef(index);
	}
	/// @brief called on NEW
	void do_new(unsigned index) {
	Out << "new #" << index << "; //class ";
	printClassRef(index);
	}
	/// @brief called on NEWARRAY
	void do_newarray(JType type) {
	Out << "newarray ";
	switch (type) {
	case BOOLEAN: Out << "boolean"; break;
	case CHAR: Out << "char"; break;
	case FLOAT: Out << "float"; break;
	case DOUBLE: Out << "double"; break;
	case BYTE: Out << "byte"; break;
	case SHORT: Out << "short"; break;
	case INT: Out << "int"; break;
	case LONG: Out << "long"; break;
	default: assert(0 && "Unknown type for newarray!");
	}
	}

	/// @brief called on ANEWARRAY
	void do_anewarray(unsigned index) {
	Out << "anewarray #" << index << "; //class ";
	printClassRef(index);
	}
	/// @brief called on ARRAYLENGTH
	void do_arraylength() { Out << "arraylength"; }
	/// @brief called on ATHROW
	void do_athrow() { Out << "athrow"; }
	/// @brief called on CHECKCAST
	void do_checkcast(unsigned index) {
	Out << "checkcast #" << index
	<< "; //class ";
	printClassRef(index);
	}
	/// @brief called on INSTANCEOF
	void do_instanceof(unsigned index) {
	Out << "instanceof #" << index
	<< "; //class ";
	printClassRef(index);
	}
	/// @brief called on MONITORENTER
	void do_monitorenter() { Out << "monitorenter"; }
	/// @brief called on MONITOREXIT
	void do_monitorexit() { Out << "monitorexit"; }
	/// @brief called on MULTIANEWARRAY
	void do_multianewarray(unsigned index, unsigned dims) { }
	/// @brief called on IFNULL
	void do_ifnull(unsigned t, unsigned f) { Out << "ifnull " << t; }
	/// @brief called on IFNONNULL
	void do_ifnonnull(unsigned t, unsigned f) { Out << "ifnonnull " << t; }

	void printMemberRef(unsigned index) {
	ConstantMemberRef* Ref = CF->getConstantMemberRef(index);
	ConstantClass* Class = Ref->getClass();
	if (Class != CF->getThisClass())
	Out << Class->getName()->str() << '.';
	Out << Ref->getNameAndType()->getName()->str()
	<< ':'
	<< Ref->getNameAndType()->getDescriptor()->str();
	}

	void printClassRef(unsigned index) {
	const std::string& FQCN = CF->getConstantClass(index)->getName()->str();
	Out << FQCN.substr(FQCN.rfind('/')+1);
	}
	};
	}

	int main(int argc, char* argv[])
	{
	sys::PrintStackTraceOnErrorSignal();
	cl::ParseCommandLineOptions(argc, argv,
	"class dump utility");

	try {
	const Java::ClassFile* cf(Java::ClassFile::get(InputClass));

	switch (DumpMode) {
	default:
	std::cerr << "no dump type selected";
	abort();
	case code: {
	ClassDump(cf, std::cout);
	break;
	}
	case constantPool: {
	for (unsigned i = 0, e = cf->getNumConstants(); i != e; ++i) {
	Constant* c = cf->getConstant(i);
	std::cout.width(6);
	std::cout << i << ": ";
	std::cout.width(0);
	if (c)
	std::cout << *cf->getConstant(i);
	else
	std::cout << "empty";
	std::cout << '\n';
	}
	break;
	}
	}
	}
	catch (std::exception& e) {
	std::cerr << e.what() << '\n';
	return EXIT_FAILURE;
	}

	return EXIT_SUCCESS;
	}