Java Code Examples for com.sun.org.apache.bcel.internal.Constants#CONSTANT_NameAndType

The following examples show how to use com.sun.org.apache.bcel.internal.Constants#CONSTANT_NameAndType . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source File: Constant.java    From openjdk-jdk8u-backup with GNU General Public License v2.0 6 votes vote down vote up
/**
 * Read one constant from the given file, the type depends on a tag byte.
 *
 * @param file Input stream
 * @return Constant object
 */
static final Constant readConstant(DataInputStream file)
  throws IOException, ClassFormatException
{
  byte b = file.readByte(); // Read tag byte

  switch(b) {
  case Constants.CONSTANT_Class:              return new ConstantClass(file);
  case Constants.CONSTANT_Fieldref:           return new ConstantFieldref(file);
  case Constants.CONSTANT_Methodref:          return new ConstantMethodref(file);
  case Constants.CONSTANT_InterfaceMethodref: return new
                                      ConstantInterfaceMethodref(file);
  case Constants.CONSTANT_String:             return new ConstantString(file);
  case Constants.CONSTANT_Integer:            return new ConstantInteger(file);
  case Constants.CONSTANT_Float:              return new ConstantFloat(file);
  case Constants.CONSTANT_Long:               return new ConstantLong(file);
  case Constants.CONSTANT_Double:             return new ConstantDouble(file);
  case Constants.CONSTANT_NameAndType:        return new ConstantNameAndType(file);
  case Constants.CONSTANT_Utf8:               return new ConstantUtf8(file);
  default:
    throw new ClassFormatException("Invalid byte tag in constant pool: " + b);
  }
}
 
Example 2
Source File: Constant.java    From openjdk-8 with GNU General Public License v2.0 6 votes vote down vote up
/**
 * Read one constant from the given file, the type depends on a tag byte.
 *
 * @param file Input stream
 * @return Constant object
 */
static final Constant readConstant(DataInputStream file)
  throws IOException, ClassFormatException
{
  byte b = file.readByte(); // Read tag byte

  switch(b) {
  case Constants.CONSTANT_Class:              return new ConstantClass(file);
  case Constants.CONSTANT_Fieldref:           return new ConstantFieldref(file);
  case Constants.CONSTANT_Methodref:          return new ConstantMethodref(file);
  case Constants.CONSTANT_InterfaceMethodref: return new
                                      ConstantInterfaceMethodref(file);
  case Constants.CONSTANT_String:             return new ConstantString(file);
  case Constants.CONSTANT_Integer:            return new ConstantInteger(file);
  case Constants.CONSTANT_Float:              return new ConstantFloat(file);
  case Constants.CONSTANT_Long:               return new ConstantLong(file);
  case Constants.CONSTANT_Double:             return new ConstantDouble(file);
  case Constants.CONSTANT_NameAndType:        return new ConstantNameAndType(file);
  case Constants.CONSTANT_Utf8:               return new ConstantUtf8(file);
  default:
    throw new ClassFormatException("Invalid byte tag in constant pool: " + b);
  }
}
 
Example 3
Source File: Constant.java    From TencentKona-8 with GNU General Public License v2.0 6 votes vote down vote up
/**
 * Read one constant from the given file, the type depends on a tag byte.
 *
 * @param file Input stream
 * @return Constant object
 */
static final Constant readConstant(DataInputStream file)
  throws IOException, ClassFormatException
{
  byte b = file.readByte(); // Read tag byte

  switch(b) {
  case Constants.CONSTANT_Class:              return new ConstantClass(file);
  case Constants.CONSTANT_Fieldref:           return new ConstantFieldref(file);
  case Constants.CONSTANT_Methodref:          return new ConstantMethodref(file);
  case Constants.CONSTANT_InterfaceMethodref: return new
                                      ConstantInterfaceMethodref(file);
  case Constants.CONSTANT_String:             return new ConstantString(file);
  case Constants.CONSTANT_Integer:            return new ConstantInteger(file);
  case Constants.CONSTANT_Float:              return new ConstantFloat(file);
  case Constants.CONSTANT_Long:               return new ConstantLong(file);
  case Constants.CONSTANT_Double:             return new ConstantDouble(file);
  case Constants.CONSTANT_NameAndType:        return new ConstantNameAndType(file);
  case Constants.CONSTANT_Utf8:               return new ConstantUtf8(file);
  default:
    throw new ClassFormatException("Invalid byte tag in constant pool: " + b);
  }
}
 
Example 4
Source File: Constant.java    From openjdk-jdk8u with GNU General Public License v2.0 6 votes vote down vote up
/**
 * Read one constant from the given file, the type depends on a tag byte.
 *
 * @param file Input stream
 * @return Constant object
 */
static final Constant readConstant(DataInputStream file)
  throws IOException, ClassFormatException
{
  byte b = file.readByte(); // Read tag byte

  switch(b) {
  case Constants.CONSTANT_Class:              return new ConstantClass(file);
  case Constants.CONSTANT_Fieldref:           return new ConstantFieldref(file);
  case Constants.CONSTANT_Methodref:          return new ConstantMethodref(file);
  case Constants.CONSTANT_InterfaceMethodref: return new
                                      ConstantInterfaceMethodref(file);
  case Constants.CONSTANT_String:             return new ConstantString(file);
  case Constants.CONSTANT_Integer:            return new ConstantInteger(file);
  case Constants.CONSTANT_Float:              return new ConstantFloat(file);
  case Constants.CONSTANT_Long:               return new ConstantLong(file);
  case Constants.CONSTANT_Double:             return new ConstantDouble(file);
  case Constants.CONSTANT_NameAndType:        return new ConstantNameAndType(file);
  case Constants.CONSTANT_Utf8:               return new ConstantUtf8(file);
  default:
    throw new ClassFormatException("Invalid byte tag in constant pool: " + b);
  }
}
 
Example 5
Source File: Constant.java    From jdk8u60 with GNU General Public License v2.0 6 votes vote down vote up
/**
 * Read one constant from the given file, the type depends on a tag byte.
 *
 * @param file Input stream
 * @return Constant object
 */
static final Constant readConstant(DataInputStream file)
  throws IOException, ClassFormatException
{
  byte b = file.readByte(); // Read tag byte

  switch(b) {
  case Constants.CONSTANT_Class:              return new ConstantClass(file);
  case Constants.CONSTANT_Fieldref:           return new ConstantFieldref(file);
  case Constants.CONSTANT_Methodref:          return new ConstantMethodref(file);
  case Constants.CONSTANT_InterfaceMethodref: return new
                                      ConstantInterfaceMethodref(file);
  case Constants.CONSTANT_String:             return new ConstantString(file);
  case Constants.CONSTANT_Integer:            return new ConstantInteger(file);
  case Constants.CONSTANT_Float:              return new ConstantFloat(file);
  case Constants.CONSTANT_Long:               return new ConstantLong(file);
  case Constants.CONSTANT_Double:             return new ConstantDouble(file);
  case Constants.CONSTANT_NameAndType:        return new ConstantNameAndType(file);
  case Constants.CONSTANT_Utf8:               return new ConstantUtf8(file);
  default:
    throw new ClassFormatException("Invalid byte tag in constant pool: " + b);
  }
}
 
Example 6
Source File: Constant.java    From JDKSourceCode1.8 with MIT License 6 votes vote down vote up
/**
 * Read one constant from the given file, the type depends on a tag byte.
 *
 * @param file Input stream
 * @return Constant object
 */
static final Constant readConstant(DataInputStream file)
  throws IOException, ClassFormatException
{
  byte b = file.readByte(); // Read tag byte

  switch(b) {
  case Constants.CONSTANT_Class:              return new ConstantClass(file);
  case Constants.CONSTANT_Fieldref:           return new ConstantFieldref(file);
  case Constants.CONSTANT_Methodref:          return new ConstantMethodref(file);
  case Constants.CONSTANT_InterfaceMethodref: return new
                                      ConstantInterfaceMethodref(file);
  case Constants.CONSTANT_String:             return new ConstantString(file);
  case Constants.CONSTANT_Integer:            return new ConstantInteger(file);
  case Constants.CONSTANT_Float:              return new ConstantFloat(file);
  case Constants.CONSTANT_Long:               return new ConstantLong(file);
  case Constants.CONSTANT_Double:             return new ConstantDouble(file);
  case Constants.CONSTANT_NameAndType:        return new ConstantNameAndType(file);
  case Constants.CONSTANT_Utf8:               return new ConstantUtf8(file);
  default:
    throw new ClassFormatException("Invalid byte tag in constant pool: " + b);
  }
}
 
Example 7
Source File: ConstantNameAndType.java    From hottub with GNU General Public License v2.0 5 votes vote down vote up
/**
 * @param name_index Name of field/method
 * @param signature_index and its signature
 */
public ConstantNameAndType(int name_index,
                           int signature_index)
{
  super(Constants.CONSTANT_NameAndType);
  this.name_index      = name_index;
  this.signature_index = signature_index;
}
 
Example 8
Source File: ConstantNameAndType.java    From openjdk-jdk8u-backup with GNU General Public License v2.0 5 votes vote down vote up
/**
 * @param name_index Name of field/method
 * @param signature_index and its signature
 */
public ConstantNameAndType(int name_index,
                           int signature_index)
{
  super(Constants.CONSTANT_NameAndType);
  this.name_index      = name_index;
  this.signature_index = signature_index;
}
 
Example 9
Source File: ConstantNameAndType.java    From openjdk-8 with GNU General Public License v2.0 5 votes vote down vote up
/**
 * @param name_index Name of field/method
 * @param signature_index and its signature
 */
public ConstantNameAndType(int name_index,
                           int signature_index)
{
  super(Constants.CONSTANT_NameAndType);
  this.name_index      = name_index;
  this.signature_index = signature_index;
}
 
Example 10
Source File: ConstantNameAndType.java    From openjdk-8-source with GNU General Public License v2.0 5 votes vote down vote up
/**
 * @param name_index Name of field/method
 * @param signature_index and its signature
 */
public ConstantNameAndType(int name_index,
                           int signature_index)
{
  super(Constants.CONSTANT_NameAndType);
  this.name_index      = name_index;
  this.signature_index = signature_index;
}
 
Example 11
Source File: ConstantNameAndType.java    From TencentKona-8 with GNU General Public License v2.0 5 votes vote down vote up
/**
 * @param name_index Name of field/method
 * @param signature_index and its signature
 */
public ConstantNameAndType(int name_index,
                           int signature_index)
{
  super(Constants.CONSTANT_NameAndType);
  this.name_index      = name_index;
  this.signature_index = signature_index;
}
 
Example 12
Source File: ConstantNameAndType.java    From jdk1.8-source-analysis with Apache License 2.0 5 votes vote down vote up
/**
 * @param name_index Name of field/method
 * @param signature_index and its signature
 */
public ConstantNameAndType(int name_index,
                           int signature_index)
{
  super(Constants.CONSTANT_NameAndType);
  this.name_index      = name_index;
  this.signature_index = signature_index;
}
 
Example 13
Source File: ConstantNameAndType.java    From openjdk-jdk9 with GNU General Public License v2.0 5 votes vote down vote up
/**
 * @param name_index Name of field/method
 * @param signature_index and its signature
 */
public ConstantNameAndType(int name_index,
                           int signature_index)
{
  super(Constants.CONSTANT_NameAndType);
  this.name_index      = name_index;
  this.signature_index = signature_index;
}
 
Example 14
Source File: ConstantPool.java    From JDKSourceCode1.8 with MIT License 4 votes vote down vote up
/**
 * Resolve constant to a string representation.
 *
 * @param  constant Constant to be printed
 * @return String representation
 */
public String constantToString(Constant c)
     throws ClassFormatException
{
  String   str;
  int      i;
  byte     tag = c.getTag();

  switch(tag) {
  case Constants.CONSTANT_Class:
    i   = ((ConstantClass)c).getNameIndex();
    c   = getConstant(i, Constants.CONSTANT_Utf8);
    str = Utility.compactClassName(((ConstantUtf8)c).getBytes(), false);
    break;

  case Constants.CONSTANT_String:
    i   = ((ConstantString)c).getStringIndex();
    c   = getConstant(i, Constants.CONSTANT_Utf8);
    str = "\"" + escape(((ConstantUtf8)c).getBytes()) + "\"";
    break;

  case Constants.CONSTANT_Utf8:    str = ((ConstantUtf8)c).getBytes();         break;
  case Constants.CONSTANT_Double:  str = "" + ((ConstantDouble)c).getBytes();  break;
  case Constants.CONSTANT_Float:   str = "" + ((ConstantFloat)c).getBytes();   break;
  case Constants.CONSTANT_Long:    str = "" + ((ConstantLong)c).getBytes();    break;
  case Constants.CONSTANT_Integer: str = "" + ((ConstantInteger)c).getBytes(); break;

  case Constants.CONSTANT_NameAndType:
    str = (constantToString(((ConstantNameAndType)c).getNameIndex(),
                            Constants.CONSTANT_Utf8) + " " +
           constantToString(((ConstantNameAndType)c).getSignatureIndex(),
                            Constants.CONSTANT_Utf8));
    break;

  case Constants.CONSTANT_InterfaceMethodref: case Constants.CONSTANT_Methodref:
  case Constants.CONSTANT_Fieldref:
    str = (constantToString(((ConstantCP)c).getClassIndex(),
                            Constants.CONSTANT_Class) + "." +
           constantToString(((ConstantCP)c).getNameAndTypeIndex(),
                            Constants.CONSTANT_NameAndType));
    break;

  default: // Never reached
    throw new RuntimeException("Unknown constant type " + tag);
  }

  return str;
}
 
Example 15
Source File: ConstantPool.java    From openjdk-8 with GNU General Public License v2.0 4 votes vote down vote up
/**
 * Resolve constant to a string representation.
 *
 * @param  constant Constant to be printed
 * @return String representation
 */
public String constantToString(Constant c)
     throws ClassFormatException
{
  String   str;
  int      i;
  byte     tag = c.getTag();

  switch(tag) {
  case Constants.CONSTANT_Class:
    i   = ((ConstantClass)c).getNameIndex();
    c   = getConstant(i, Constants.CONSTANT_Utf8);
    str = Utility.compactClassName(((ConstantUtf8)c).getBytes(), false);
    break;

  case Constants.CONSTANT_String:
    i   = ((ConstantString)c).getStringIndex();
    c   = getConstant(i, Constants.CONSTANT_Utf8);
    str = "\"" + escape(((ConstantUtf8)c).getBytes()) + "\"";
    break;

  case Constants.CONSTANT_Utf8:    str = ((ConstantUtf8)c).getBytes();         break;
  case Constants.CONSTANT_Double:  str = "" + ((ConstantDouble)c).getBytes();  break;
  case Constants.CONSTANT_Float:   str = "" + ((ConstantFloat)c).getBytes();   break;
  case Constants.CONSTANT_Long:    str = "" + ((ConstantLong)c).getBytes();    break;
  case Constants.CONSTANT_Integer: str = "" + ((ConstantInteger)c).getBytes(); break;

  case Constants.CONSTANT_NameAndType:
    str = (constantToString(((ConstantNameAndType)c).getNameIndex(),
                            Constants.CONSTANT_Utf8) + " " +
           constantToString(((ConstantNameAndType)c).getSignatureIndex(),
                            Constants.CONSTANT_Utf8));
    break;

  case Constants.CONSTANT_InterfaceMethodref: case Constants.CONSTANT_Methodref:
  case Constants.CONSTANT_Fieldref:
    str = (constantToString(((ConstantCP)c).getClassIndex(),
                            Constants.CONSTANT_Class) + "." +
           constantToString(((ConstantCP)c).getNameAndTypeIndex(),
                            Constants.CONSTANT_NameAndType));
    break;

  default: // Never reached
    throw new RuntimeException("Unknown constant type " + tag);
  }

  return str;
}
 
Example 16
Source File: ConstantPool.java    From openjdk-jdk8u with GNU General Public License v2.0 4 votes vote down vote up
/**
 * Resolve constant to a string representation.
 *
 * @param  constant Constant to be printed
 * @return String representation
 */
public String constantToString(Constant c)
     throws ClassFormatException
{
  String   str;
  int      i;
  byte     tag = c.getTag();

  switch(tag) {
  case Constants.CONSTANT_Class:
    i   = ((ConstantClass)c).getNameIndex();
    c   = getConstant(i, Constants.CONSTANT_Utf8);
    str = Utility.compactClassName(((ConstantUtf8)c).getBytes(), false);
    break;

  case Constants.CONSTANT_String:
    i   = ((ConstantString)c).getStringIndex();
    c   = getConstant(i, Constants.CONSTANT_Utf8);
    str = "\"" + escape(((ConstantUtf8)c).getBytes()) + "\"";
    break;

  case Constants.CONSTANT_Utf8:    str = ((ConstantUtf8)c).getBytes();         break;
  case Constants.CONSTANT_Double:  str = "" + ((ConstantDouble)c).getBytes();  break;
  case Constants.CONSTANT_Float:   str = "" + ((ConstantFloat)c).getBytes();   break;
  case Constants.CONSTANT_Long:    str = "" + ((ConstantLong)c).getBytes();    break;
  case Constants.CONSTANT_Integer: str = "" + ((ConstantInteger)c).getBytes(); break;

  case Constants.CONSTANT_NameAndType:
    str = (constantToString(((ConstantNameAndType)c).getNameIndex(),
                            Constants.CONSTANT_Utf8) + " " +
           constantToString(((ConstantNameAndType)c).getSignatureIndex(),
                            Constants.CONSTANT_Utf8));
    break;

  case Constants.CONSTANT_InterfaceMethodref: case Constants.CONSTANT_Methodref:
  case Constants.CONSTANT_Fieldref:
    str = (constantToString(((ConstantCP)c).getClassIndex(),
                            Constants.CONSTANT_Class) + "." +
           constantToString(((ConstantCP)c).getNameAndTypeIndex(),
                            Constants.CONSTANT_NameAndType));
    break;

  default: // Never reached
    throw new RuntimeException("Unknown constant type " + tag);
  }

  return str;
}
 
Example 17
Source File: ConstantPool.java    From jdk8u60 with GNU General Public License v2.0 4 votes vote down vote up
/**
 * Resolve constant to a string representation.
 *
 * @param  constant Constant to be printed
 * @return String representation
 */
public String constantToString(Constant c)
     throws ClassFormatException
{
  String   str;
  int      i;
  byte     tag = c.getTag();

  switch(tag) {
  case Constants.CONSTANT_Class:
    i   = ((ConstantClass)c).getNameIndex();
    c   = getConstant(i, Constants.CONSTANT_Utf8);
    str = Utility.compactClassName(((ConstantUtf8)c).getBytes(), false);
    break;

  case Constants.CONSTANT_String:
    i   = ((ConstantString)c).getStringIndex();
    c   = getConstant(i, Constants.CONSTANT_Utf8);
    str = "\"" + escape(((ConstantUtf8)c).getBytes()) + "\"";
    break;

  case Constants.CONSTANT_Utf8:    str = ((ConstantUtf8)c).getBytes();         break;
  case Constants.CONSTANT_Double:  str = "" + ((ConstantDouble)c).getBytes();  break;
  case Constants.CONSTANT_Float:   str = "" + ((ConstantFloat)c).getBytes();   break;
  case Constants.CONSTANT_Long:    str = "" + ((ConstantLong)c).getBytes();    break;
  case Constants.CONSTANT_Integer: str = "" + ((ConstantInteger)c).getBytes(); break;

  case Constants.CONSTANT_NameAndType:
    str = (constantToString(((ConstantNameAndType)c).getNameIndex(),
                            Constants.CONSTANT_Utf8) + " " +
           constantToString(((ConstantNameAndType)c).getSignatureIndex(),
                            Constants.CONSTANT_Utf8));
    break;

  case Constants.CONSTANT_InterfaceMethodref: case Constants.CONSTANT_Methodref:
  case Constants.CONSTANT_Fieldref:
    str = (constantToString(((ConstantCP)c).getClassIndex(),
                            Constants.CONSTANT_Class) + "." +
           constantToString(((ConstantCP)c).getNameAndTypeIndex(),
                            Constants.CONSTANT_NameAndType));
    break;

  default: // Never reached
    throw new RuntimeException("Unknown constant type " + tag);
  }

  return str;
}
 
Example 18
Source File: ConstantPool.java    From openjdk-jdk8u-backup with GNU General Public License v2.0 4 votes vote down vote up
/**
 * Resolve constant to a string representation.
 *
 * @param  constant Constant to be printed
 * @return String representation
 */
public String constantToString(Constant c)
     throws ClassFormatException
{
  String   str;
  int      i;
  byte     tag = c.getTag();

  switch(tag) {
  case Constants.CONSTANT_Class:
    i   = ((ConstantClass)c).getNameIndex();
    c   = getConstant(i, Constants.CONSTANT_Utf8);
    str = Utility.compactClassName(((ConstantUtf8)c).getBytes(), false);
    break;

  case Constants.CONSTANT_String:
    i   = ((ConstantString)c).getStringIndex();
    c   = getConstant(i, Constants.CONSTANT_Utf8);
    str = "\"" + escape(((ConstantUtf8)c).getBytes()) + "\"";
    break;

  case Constants.CONSTANT_Utf8:    str = ((ConstantUtf8)c).getBytes();         break;
  case Constants.CONSTANT_Double:  str = "" + ((ConstantDouble)c).getBytes();  break;
  case Constants.CONSTANT_Float:   str = "" + ((ConstantFloat)c).getBytes();   break;
  case Constants.CONSTANT_Long:    str = "" + ((ConstantLong)c).getBytes();    break;
  case Constants.CONSTANT_Integer: str = "" + ((ConstantInteger)c).getBytes(); break;

  case Constants.CONSTANT_NameAndType:
    str = (constantToString(((ConstantNameAndType)c).getNameIndex(),
                            Constants.CONSTANT_Utf8) + " " +
           constantToString(((ConstantNameAndType)c).getSignatureIndex(),
                            Constants.CONSTANT_Utf8));
    break;

  case Constants.CONSTANT_InterfaceMethodref: case Constants.CONSTANT_Methodref:
  case Constants.CONSTANT_Fieldref:
    str = (constantToString(((ConstantCP)c).getClassIndex(),
                            Constants.CONSTANT_Class) + "." +
           constantToString(((ConstantCP)c).getNameAndTypeIndex(),
                            Constants.CONSTANT_NameAndType));
    break;

  default: // Never reached
    throw new RuntimeException("Unknown constant type " + tag);
  }

  return str;
}
 
Example 19
Source File: ConstantPool.java    From hottub with GNU General Public License v2.0 4 votes vote down vote up
/**
 * Resolve constant to a string representation.
 *
 * @param  constant Constant to be printed
 * @return String representation
 */
public String constantToString(Constant c)
     throws ClassFormatException
{
  String   str;
  int      i;
  byte     tag = c.getTag();

  switch(tag) {
  case Constants.CONSTANT_Class:
    i   = ((ConstantClass)c).getNameIndex();
    c   = getConstant(i, Constants.CONSTANT_Utf8);
    str = Utility.compactClassName(((ConstantUtf8)c).getBytes(), false);
    break;

  case Constants.CONSTANT_String:
    i   = ((ConstantString)c).getStringIndex();
    c   = getConstant(i, Constants.CONSTANT_Utf8);
    str = "\"" + escape(((ConstantUtf8)c).getBytes()) + "\"";
    break;

  case Constants.CONSTANT_Utf8:    str = ((ConstantUtf8)c).getBytes();         break;
  case Constants.CONSTANT_Double:  str = "" + ((ConstantDouble)c).getBytes();  break;
  case Constants.CONSTANT_Float:   str = "" + ((ConstantFloat)c).getBytes();   break;
  case Constants.CONSTANT_Long:    str = "" + ((ConstantLong)c).getBytes();    break;
  case Constants.CONSTANT_Integer: str = "" + ((ConstantInteger)c).getBytes(); break;

  case Constants.CONSTANT_NameAndType:
    str = (constantToString(((ConstantNameAndType)c).getNameIndex(),
                            Constants.CONSTANT_Utf8) + " " +
           constantToString(((ConstantNameAndType)c).getSignatureIndex(),
                            Constants.CONSTANT_Utf8));
    break;

  case Constants.CONSTANT_InterfaceMethodref: case Constants.CONSTANT_Methodref:
  case Constants.CONSTANT_Fieldref:
    str = (constantToString(((ConstantCP)c).getClassIndex(),
                            Constants.CONSTANT_Class) + "." +
           constantToString(((ConstantCP)c).getNameAndTypeIndex(),
                            Constants.CONSTANT_NameAndType));
    break;

  default: // Never reached
    throw new RuntimeException("Unknown constant type " + tag);
  }

  return str;
}
 
Example 20
Source File: ConstantPool.java    From jdk1.8-source-analysis with Apache License 2.0 4 votes vote down vote up
/**
 * Resolve constant to a string representation.
 *
 * @param  constant Constant to be printed
 * @return String representation
 */
public String constantToString(Constant c)
     throws ClassFormatException
{
  String   str;
  int      i;
  byte     tag = c.getTag();

  switch(tag) {
  case Constants.CONSTANT_Class:
    i   = ((ConstantClass)c).getNameIndex();
    c   = getConstant(i, Constants.CONSTANT_Utf8);
    str = Utility.compactClassName(((ConstantUtf8)c).getBytes(), false);
    break;

  case Constants.CONSTANT_String:
    i   = ((ConstantString)c).getStringIndex();
    c   = getConstant(i, Constants.CONSTANT_Utf8);
    str = "\"" + escape(((ConstantUtf8)c).getBytes()) + "\"";
    break;

  case Constants.CONSTANT_Utf8:    str = ((ConstantUtf8)c).getBytes();         break;
  case Constants.CONSTANT_Double:  str = "" + ((ConstantDouble)c).getBytes();  break;
  case Constants.CONSTANT_Float:   str = "" + ((ConstantFloat)c).getBytes();   break;
  case Constants.CONSTANT_Long:    str = "" + ((ConstantLong)c).getBytes();    break;
  case Constants.CONSTANT_Integer: str = "" + ((ConstantInteger)c).getBytes(); break;

  case Constants.CONSTANT_NameAndType:
    str = (constantToString(((ConstantNameAndType)c).getNameIndex(),
                            Constants.CONSTANT_Utf8) + " " +
           constantToString(((ConstantNameAndType)c).getSignatureIndex(),
                            Constants.CONSTANT_Utf8));
    break;

  case Constants.CONSTANT_InterfaceMethodref: case Constants.CONSTANT_Methodref:
  case Constants.CONSTANT_Fieldref:
    str = (constantToString(((ConstantCP)c).getClassIndex(),
                            Constants.CONSTANT_Class) + "." +
           constantToString(((ConstantCP)c).getNameAndTypeIndex(),
                            Constants.CONSTANT_NameAndType));
    break;

  default: // Never reached
    throw new RuntimeException("Unknown constant type " + tag);
  }

  return str;
}