ClassFileReader (Java Assembler / Disassembler (Jasm) 1.0 API)

java.lang.Object
- jasm.io.ClassFileReader

```
public final class ClassFileReader
extends Object
```
The ClassFileReader is responsible for reading in a class file and constructing a ClassFile object from it.

Author:

David J. Pearce

Nested Class Summary

Nested Classes
Modifier and Type Class and Description

protected static class ClassFileReader.ClassConstant
This class represents a class constant.

Nested Classes
Modifier and Type	Class and Description
`protected static class`	`ClassFileReader.ClassConstant` This class represents a class constant.

Field Summary

Fields
Modifier and Type	Field and Description
`static int`	`ACC_ABSTRACT`
`static int`	`ACC_ANNOTATION`
`static int`	`ACC_BRIDGE`
`static int`	`ACC_ENUM`
`static int`	`ACC_FINAL`
`static int`	`ACC_INTERFACE`
`static int`	`ACC_NATIVE`
`static int`	`ACC_PRIVATE`
`static int`	`ACC_PROTECTED`
`static int`	`ACC_PUBLIC`
`static int`	`ACC_STATIC`
`static int`	`ACC_STRICT`
`static int`	`ACC_SUPER`
`static int`	`ACC_SYNCHRONIZED`
`static int`	`ACC_SYNTHETIC`
`static int`	`ACC_TRANSIENT`
`static int`	`ACC_VARARGS`
`static int`	`ACC_VOLATILE`
`static int`	`ADD`
`static int`	`AND`
`protected static char`	`ANNOTATION`
`protected static char`	`ARRAY`
`static int`	`ARRAYLENGTH`
`static int`	`ARRAYLOAD`
`static int`	`ARRAYSTORE`
`protected static char`	`BOOLEAN`
`protected static char`	`BYTE`
`protected static char`	`CHAR`
`static int`	`CHECKCAST`
`protected static char`	`CLASS`
`static int`	`CMP`
`static int`	`CMPG`
`static int`	`CMPL`
`protected static int`	`CONSTANT_Class`
`protected static int`	`CONSTANT_Double`
`protected static int`	`CONSTANT_FieldRef`
`protected static int`	`CONSTANT_Float`
`protected static int`	`CONSTANT_Integer`
`protected static int`	`CONSTANT_InterfaceMethodRef`
`protected static int`	`CONSTANT_Long`
`protected static int`	`CONSTANT_MethodRef`
`protected static int`	`CONSTANT_NameAndType`
`protected static int`	`CONSTANT_String`
`protected static int`	`CONSTANT_Utf8`
`static int`	`CONVERT`
`static int`	`DIV`
`protected static char`	`DOUBLE`
`static int`	`DUP`
`static int`	`DUPX1`
`static int`	`DUPX2`
`protected static char`	`ENUM`
`static int`	`EQUALS`
`static int`	`FIELDLOAD`
`static int`	`FIELDSTORE`
`protected static char`	`FLOAT`
`static int`	`GOTO`
`static int`	`GREATERTHAN`
`static int`	`GREATERTHANEQUALS`
`static int`	`IF`
`static int`	`IFCMP`
`static int`	`IINC`
`static int`	`INSN_MASK`
`static int`	`INSTANCEOF`
`protected static char`	`INT`
`static int`	`INVOKE`
`static int`	`JSR`
`static int`	`LESSTHAN`
`static int`	`LESSTHANEQUALS`
`static int`	`LOADCONST`
`static int`	`LOADVAR`
`protected static char`	`LONG`
`static int`	`MONITORENTER`
`static int`	`MONITOREXIT`
`static int`	`MUL`
`static int`	`NEG`
`static int`	`NEW`
`static int`	`NONNULL`
`static int`	`NOP`
`static int`	`NOTEQUALS`
`static int`	`NULL`
`static int[]`	`opmap`
`static int`	`OR`
`static int`	`POP`
`static int`	`REM`
`static int`	`RET`
`static int`	`RETURN`
`static int`	`SHL`
`protected static char`	`SHORT`
`static int`	`SHR`
`static int`	`STORECONST`
`static int`	`STOREVAR`
`protected static char`	`STRING`
`static int`	`SUB`
`static int`	`SWAP`
`static int`	`SWITCH`
`static int`	`THROW`
`static int`	`USHR`
`static byte`	`VM_BOOLEAN`
`static byte`	`VM_BYTE`
`static byte`	`VM_CHAR`
`static byte`	`VM_DOUBLE`
`static byte`	`VM_FLOAT`
`static byte`	`VM_INT`
`static byte`	`VM_LONG`
`static byte`	`VM_SHORT`
`static int`	`WIDE_INSN`
`static int`	`XOR`

Constructor Summary

Constructors
Constructor and Description
`ClassFileReader(byte[] bytes, BytecodeAttribute.Reader... readers)` Construct reader from byte array representing classfile.
`ClassFileReader(byte[] bytes, Collection<BytecodeAttribute.Reader> readers)` Construct reader from byte array representing classfile.
`ClassFileReader(InputStream in, BytecodeAttribute.Reader... readers)` Construct reader for classfile from InputStream
`ClassFileReader(InputStream in, Collection<BytecodeAttribute.Reader> readers)` Construct reader for classfile from InputStream

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`protected int`	`annotationLength(int offset)`
`protected static JvmType.Array`	`buildArraytype(int atype)`
`Object`	`convert(Constant.Info constant)` Convert a constant pool item into a Java constant object (e.g.
`protected String`	`createBranchLabel(int target, HashMap<Integer,String> labels)`
`protected JvmType.Primitive`	`decodeConversionType(int offset)`
`protected Bytecode`	`decodeInstruction(int offset, int start, HashMap<Integer,String> labels, int line)`
`protected String`	`decodeInstructionBranchTarget(int offset, int start, HashMap<Integer,String> labels, int line)` Determine the relative offset for the destination of a branching instruction.
`protected Object`	`decodeInstructionConstant(int offset, int line)`
`protected int`	`decodeInstructionLength(int offset, int codeOffsetP14)`
`protected Triple<JvmType.Clazz,String,JvmType>`	`decodeInstructionOwnerNameType(int offset, int line)`
`protected JvmType`	`decodeInstructionType(int offset)`
`protected int`	`decodeInstructionVariable(int offset, int line)`
`Pair<Integer,JvmType>[]`	`exceptionHandlers(int offset, int exceptionTableOffset)`
`String`	`getClassName(int index)` This method is slightly ugly and it would be nice to get rid of it.
`Constant.Info`	`getConstant(int index)` Read constant value from this classfile's constant pool.
`JvmType`	`getConstantType(int index)` Get the type of the constant value from this classfile's constant pool.
`String`	`getString(int index)` Read string from this classfile's constant pool.
`protected BytecodeAttribute`	`parseAttribute(int offset, ClassFile.Method enclosingMethod, ClassFile enclosingClass)`
`protected ArrayList<BytecodeAttribute>`	`parseAttributes(int attributes, ClassFile.Method enclosingMethod, ClassFile enclosingClass)` parse any attributes associated with this field.
`static JvmType.Clazz`	`parseClassDescriptor(String descriptor)` This method parses a descriptor of the form "Lxxx.yyy.zzz$aaa$bbb;"
`protected Triple<List<JvmType.Reference>,JvmType.Clazz,List<JvmType.Clazz>>`	`parseClassSigDesc(String descriptor)` The class signature provides information about the generic type parameters declared for a class.
`protected Code`	`parseCode(int offset, String name, ClassFile.Method enclosingMethod)`
`protected ConstantValue`	`parseConstantValue(int offset, String name)`
`static JvmType`	`parseDescriptor(String descriptor)` This method parses a general type descriptor.
`protected Exceptions`	`parseExceptions(int offset, String name)`
`protected ClassFile.Field`	`parseField(int offset)`
`protected ArrayList<ClassFile.Field>`	`parseFields(int fields)` parse array of fields defined in this class
`static Pair<JvmType.Variable,Integer>`	`parseFormalType(String descriptor, int pos)`
`protected InnerClasses`	`parseInnerClasses(int offset, String name, JvmType.Clazz type)`
`protected ArrayList<JvmType.Clazz>`	`parseInterfaces(int interfaces)` Get array of interfaces implemented by this class.
`static Pair<JvmType.Clazz,Integer>`	`parseInternalClassDescriptor(String descriptor, int pos)`
`static Pair<JvmType,Integer>`	`parseInternalDescriptor(String descriptor, int pos)`
`protected ClassFile.Method`	`parseMethod(int offset, String owner)`
`static JvmType.Function`	`parseMethodDescriptor(String descriptor)`
`protected ArrayList<ClassFile.Method>`	`parseMethods(int methods, String owner)` parse array of methods defined in this class
`ClassFile`	`readClass()` Parse classfile and construct ClassInfo object.
`protected static byte[]`	`readStream(InputStream is)`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail
- BYTE
```
protected static final char BYTE
```
  See Also:
  
  Constant Field Values
- CHAR
```
protected static final char CHAR
```
  See Also:
  
  Constant Field Values
- DOUBLE
```
protected static final char DOUBLE
```
  See Also:
  
  Constant Field Values
- FLOAT
```
protected static final char FLOAT
```
  See Also:
  
  Constant Field Values
- INT
```
protected static final char INT
```
  See Also:
  
  Constant Field Values
- LONG
```
protected static final char LONG
```
  See Also:
  
  Constant Field Values
- SHORT
```
protected static final char SHORT
```
  See Also:
  
  Constant Field Values
- BOOLEAN
```
protected static final char BOOLEAN
```
  See Also:
  
  Constant Field Values
- STRING
```
protected static final char STRING
```
  See Also:
  
  Constant Field Values
- ENUM
```
protected static final char ENUM
```
  See Also:
  
  Constant Field Values
- CLASS
```
protected static final char CLASS
```
  See Also:
  
  Constant Field Values
- ANNOTATION
```
protected static final char ANNOTATION
```
  See Also:
  
  Constant Field Values
- ARRAY
```
protected static final char ARRAY
```
  See Also:
  
  Constant Field Values
- ACC_PUBLIC
```
public static final int ACC_PUBLIC
```
  See Also:
  
  Constant Field Values
- ACC_PRIVATE
```
public static final int ACC_PRIVATE
```
  See Also:
  
  Constant Field Values
- ACC_PROTECTED
```
public static final int ACC_PROTECTED
```
  See Also:
  
  Constant Field Values
- ACC_STATIC
```
public static final int ACC_STATIC
```
  See Also:
  
  Constant Field Values
- ACC_FINAL
```
public static final int ACC_FINAL
```
  See Also:
  
  Constant Field Values
- ACC_VOLATILE
```
public static final int ACC_VOLATILE
```
  See Also:
  
  Constant Field Values
- ACC_TRANSIENT
```
public static final int ACC_TRANSIENT
```
  See Also:
  
  Constant Field Values
- ACC_SYNTHETIC
```
public static final int ACC_SYNTHETIC
```
  See Also:
  
  Constant Field Values
- ACC_BRIDGE
```
public static final int ACC_BRIDGE
```
  See Also:
  
  Constant Field Values
- ACC_VARARGS
```
public static final int ACC_VARARGS
```
  See Also:
  
  Constant Field Values
- ACC_ANNOTATION
```
public static final int ACC_ANNOTATION
```
  See Also:
  
  Constant Field Values
- ACC_ENUM
```
public static final int ACC_ENUM
```
  See Also:
  
  Constant Field Values
- ACC_SYNCHRONIZED
```
public static final int ACC_SYNCHRONIZED
```
  See Also:
  
  Constant Field Values
- ACC_NATIVE
```
public static final int ACC_NATIVE
```
  See Also:
  
  Constant Field Values
- ACC_ABSTRACT
```
public static final int ACC_ABSTRACT
```
  See Also:
  
  Constant Field Values
- ACC_STRICT
```
public static final int ACC_STRICT
```
  See Also:
  
  Constant Field Values
- ACC_INTERFACE
```
public static final int ACC_INTERFACE
```
  See Also:
  
  Constant Field Values
- ACC_SUPER
```
public static final int ACC_SUPER
```
  See Also:
  
  Constant Field Values
- CONSTANT_Class
```
protected static final int CONSTANT_Class
```
  See Also:
  
  Constant Field Values
- CONSTANT_FieldRef
```
protected static final int CONSTANT_FieldRef
```
  See Also:
  
  Constant Field Values
- CONSTANT_MethodRef
```
protected static final int CONSTANT_MethodRef
```
  See Also:
  
  Constant Field Values
- CONSTANT_InterfaceMethodRef
```
protected static final int CONSTANT_InterfaceMethodRef
```
  See Also:
  
  Constant Field Values
- CONSTANT_String
```
protected static final int CONSTANT_String
```
  See Also:
  
  Constant Field Values
- CONSTANT_Integer
```
protected static final int CONSTANT_Integer
```
  See Also:
  
  Constant Field Values
- CONSTANT_Float
```
protected static final int CONSTANT_Float
```
  See Also:
  
  Constant Field Values
- CONSTANT_Long
```
protected static final int CONSTANT_Long
```
  See Also:
  
  Constant Field Values
- CONSTANT_Double
```
protected static final int CONSTANT_Double
```
  See Also:
  
  Constant Field Values
- CONSTANT_NameAndType
```
protected static final int CONSTANT_NameAndType
```
  See Also:
  
  Constant Field Values
- CONSTANT_Utf8
```
protected static final int CONSTANT_Utf8
```
  See Also:
  
  Constant Field Values
- VM_BOOLEAN
```
public static final byte VM_BOOLEAN
```
  See Also:
  
  Constant Field Values
- VM_CHAR
```
public static final byte VM_CHAR
```
  See Also:
  
  Constant Field Values
- VM_FLOAT
```
public static final byte VM_FLOAT
```
  See Also:
  
  Constant Field Values
- VM_DOUBLE
```
public static final byte VM_DOUBLE
```
  See Also:
  
  Constant Field Values
- VM_BYTE
```
public static final byte VM_BYTE
```
  See Also:
  
  Constant Field Values
- VM_SHORT
```
public static final byte VM_SHORT
```
  See Also:
  
  Constant Field Values
- VM_INT
```
public static final byte VM_INT
```
  See Also:
  
  Constant Field Values
- VM_LONG
```
public static final byte VM_LONG
```
  See Also:
  
  Constant Field Values
- INSN_MASK
```
public static final int INSN_MASK
```
  See Also:
  
  Constant Field Values
- WIDE_INSN
```
public static final int WIDE_INSN
```
  See Also:
  
  Constant Field Values
- NOP
```
public static final int NOP
```
  See Also:
  
  Constant Field Values
- LOADVAR
```
public static final int LOADVAR
```
  See Also:
  
  Constant Field Values
- STOREVAR
```
public static final int STOREVAR
```
  See Also:
  
  Constant Field Values
- LOADCONST
```
public static final int LOADCONST
```
  See Also:
  
  Constant Field Values
- STORECONST
```
public static final int STORECONST
```
  See Also:
  
  Constant Field Values
- ARRAYLOAD
```
public static final int ARRAYLOAD
```
  See Also:
  
  Constant Field Values
- ARRAYSTORE
```
public static final int ARRAYSTORE
```
  See Also:
  
  Constant Field Values
- ARRAYLENGTH
```
public static final int ARRAYLENGTH
```
  See Also:
  
  Constant Field Values
- IINC
```
public static final int IINC
```
  See Also:
  
  Constant Field Values
- NEW
```
public static final int NEW
```
  See Also:
  
  Constant Field Values
- THROW
```
public static final int THROW
```
  See Also:
  
  Constant Field Values
- CHECKCAST
```
public static final int CHECKCAST
```
  See Also:
  
  Constant Field Values
- INSTANCEOF
```
public static final int INSTANCEOF
```
  See Also:
  
  Constant Field Values
- MONITORENTER
```
public static final int MONITORENTER
```
  See Also:
  
  Constant Field Values
- MONITOREXIT
```
public static final int MONITOREXIT
```
  See Also:
  
  Constant Field Values
- SWITCH
```
public static final int SWITCH
```
  See Also:
  
  Constant Field Values
- CONVERT
```
public static final int CONVERT
```
  See Also:
  
  Constant Field Values
- POP
```
public static final int POP
```
  See Also:
  
  Constant Field Values
- DUP
```
public static final int DUP
```
  See Also:
  
  Constant Field Values
- DUPX1
```
public static final int DUPX1
```
  See Also:
  
  Constant Field Values
- DUPX2
```
public static final int DUPX2
```
  See Also:
  
  Constant Field Values
- SWAP
```
public static final int SWAP
```
  See Also:
  
  Constant Field Values
- ADD
```
public static final int ADD
```
  See Also:
  
  Constant Field Values
- SUB
```
public static final int SUB
```
  See Also:
  
  Constant Field Values
- MUL
```
public static final int MUL
```
  See Also:
  
  Constant Field Values
- DIV
```
public static final int DIV
```
  See Also:
  
  Constant Field Values
- REM
```
public static final int REM
```
  See Also:
  
  Constant Field Values
- NEG
```
public static final int NEG
```
  See Also:
  
  Constant Field Values
- SHL
```
public static final int SHL
```
  See Also:
  
  Constant Field Values
- SHR
```
public static final int SHR
```
  See Also:
  
  Constant Field Values
- USHR
```
public static final int USHR
```
  See Also:
  
  Constant Field Values
- AND
```
public static final int AND
```
  See Also:
  
  Constant Field Values
- OR
```
public static final int OR
```
  See Also:
  
  Constant Field Values
- XOR
```
public static final int XOR
```
  See Also:
  
  Constant Field Values
- CMP
```
public static final int CMP
```
  See Also:
  
  Constant Field Values
- CMPL
```
public static final int CMPL
```
  See Also:
  
  Constant Field Values
- CMPG
```
public static final int CMPG
```
  See Also:
  
  Constant Field Values
- IF
```
public static final int IF
```
  See Also:
  
  Constant Field Values
- IFCMP
```
public static final int IFCMP
```
  See Also:
  
  Constant Field Values
- GOTO
```
public static final int GOTO
```
  See Also:
  
  Constant Field Values
- JSR
```
public static final int JSR
```
  See Also:
  
  Constant Field Values
- RET
```
public static final int RET
```
  See Also:
  
  Constant Field Values
- RETURN
```
public static final int RETURN
```
  See Also:
  
  Constant Field Values
- FIELDLOAD
```
public static final int FIELDLOAD
```
  See Also:
  
  Constant Field Values
- FIELDSTORE
```
public static final int FIELDSTORE
```
  See Also:
  
  Constant Field Values
- INVOKE
```
public static final int INVOKE
```
  See Also:
  
  Constant Field Values
- EQUALS
```
public static final int EQUALS
```
  See Also:
  
  Constant Field Values
- NOTEQUALS
```
public static final int NOTEQUALS
```
  See Also:
  
  Constant Field Values
- LESSTHAN
```
public static final int LESSTHAN
```
  See Also:
  
  Constant Field Values
- GREATERTHANEQUALS
```
public static final int GREATERTHANEQUALS
```
  See Also:
  
  Constant Field Values
- GREATERTHAN
```
public static final int GREATERTHAN
```
  See Also:
  
  Constant Field Values
- LESSTHANEQUALS
```
public static final int LESSTHANEQUALS
```
  See Also:
  
  Constant Field Values
- NULL
```
public static final int NULL
```
  See Also:
  
  Constant Field Values
- NONNULL
```
public static final int NONNULL
```
  See Also:
  
  Constant Field Values
- opmap
```
public static final int[] opmap
```

Constructor Detail
- ClassFileReader
```
public ClassFileReader(InputStream in,
                       BytecodeAttribute.Reader... readers)
                throws IOException
```
  Construct reader for classfile from InputStream
  
  Parameters:
  
  in - InputStream from which class file is read
  
  readers - Collection of attribute readers
  
  Throws:
  
  IOException
- ClassFileReader
```
public ClassFileReader(InputStream in,
                       Collection<BytecodeAttribute.Reader> readers)
                throws IOException
```
  Construct reader for classfile from InputStream
  
  Parameters:
  
  in - InputStream from which class file is read
  
  readers - Collection of attribute readers
  
  Throws:
  
  IOException
- ClassFileReader
```
public ClassFileReader(byte[] bytes,
                       BytecodeAttribute.Reader... readers)
```
  Construct reader from byte array representing classfile.
  
  Parameters:
  
  bytes - the byte array from which this class file is read.
  
  readers - Collection of attribute readers
  
  Throws:
  
  ClassFormatError - if the classfile is invalid.
- ClassFileReader
```
public ClassFileReader(byte[] bytes,
                       Collection<BytecodeAttribute.Reader> readers)
```
  Construct reader from byte array representing classfile.
  
  Parameters:
  
  bytes - the byte array from which this class file is read.
  
  readers - Collection of attribute readers
  
  Throws:
  
  ClassFormatError - if the classfile is invalid.

Method Detail

readClass
```
public ClassFile readClass()
```
Parse classfile and construct ClassInfo object. Currently, this does the same thing as readSkeletons.

Throws:

ClassFormatError - if the classfile is invalid.

parseInterfaces
```
protected ArrayList<JvmType.Clazz> parseInterfaces(int interfaces)
```
Get array of interfaces implemented by this class.

Returns:

parseFields

protected ArrayList<ClassFile.Field> parseFields(int fields)

parse array of fields defined in this class

Returns:

parseField

protected ClassFile.Field parseField(int offset)

parseMethods

protected ArrayList<ClassFile.Method> parseMethods(int methods,
                                                   String owner)

parse array of methods defined in this class

Returns:

parseMethod

protected ClassFile.Method parseMethod(int offset,
                                       String owner)

parseAttributes

protected ArrayList<BytecodeAttribute> parseAttributes(int attributes,
                                                       ClassFile.Method enclosingMethod,
                                                       ClassFile enclosingClass)

parse any attributes associated with this field.

Returns:

parseAttribute

protected BytecodeAttribute parseAttribute(int offset,
                                           ClassFile.Method enclosingMethod,
                                           ClassFile enclosingClass)

parseExceptions

protected Exceptions parseExceptions(int offset,
                                     String name)

parseConstantValue

protected ConstantValue parseConstantValue(int offset,
                                           String name)

parseInnerClasses

protected InnerClasses parseInnerClasses(int offset,
                                         String name,
                                         JvmType.Clazz type)

parseDescriptor
```
public static JvmType parseDescriptor(String descriptor)
```
This method parses a general type descriptor.

Parameters:

descriptor -

Returns:

parseClassDescriptor
```
public static JvmType.Clazz parseClassDescriptor(String descriptor)
```
This method parses a descriptor of the form "Lxxx.yyy.zzz$aaa$bbb;"

Parameters:

descriptor -

Returns:

parseClassSigDesc
```
protected Triple<List<JvmType.Reference>,JvmType.Clazz,List<JvmType.Clazz>> parseClassSigDesc(String descriptor)
```
The class signature provides information about the generic type parameters declared for a class.

Returns:

parseInternalDescriptor

public static Pair<JvmType,Integer> parseInternalDescriptor(String descriptor,
                                                            int pos)

parseInternalClassDescriptor

public static Pair<JvmType.Clazz,Integer> parseInternalClassDescriptor(String descriptor,
                                                                       int pos)

parseFormalType

public static Pair<JvmType.Variable,Integer> parseFormalType(String descriptor,
                                                             int pos)

parseMethodDescriptor

public static JvmType.Function parseMethodDescriptor(String descriptor)

parseCode

protected Code parseCode(int offset,
                         String name,
                         ClassFile.Method enclosingMethod)

decodeInstruction

protected Bytecode decodeInstruction(int offset,
                                     int start,
                                     HashMap<Integer,String> labels,
                                     int line)

decodeInstructionVariable

protected int decodeInstructionVariable(int offset,
                                        int line)

decodeInstructionLength

protected int decodeInstructionLength(int offset,
                                      int codeOffsetP14)

decodeInstructionBranchTarget

protected String decodeInstructionBranchTarget(int offset,
                                               int start,
                                               HashMap<Integer,String> labels,
                                               int line)

Determine the relative offset for the destination of a branching instruction.

Parameters:: offset -; start -; line -
Returns:

createBranchLabel

protected String createBranchLabel(int target,
                                   HashMap<Integer,String> labels)

decodeInstructionType

protected JvmType decodeInstructionType(int offset)

buildArraytype

protected static final JvmType.Array buildArraytype(int atype)

decodeConversionType

protected JvmType.Primitive decodeConversionType(int offset)

decodeInstructionConstant

protected Object decodeInstructionConstant(int offset,
                                           int line)

convert
```
public Object convert(Constant.Info constant)
```
Convert a constant pool item into a Java constant object (e.g. java.lang.Integer, java.lang.String, etc).

Parameters:

constant - Constant pool item to be converted. Should be an instance of Constant.String, Constant.Integer, Constant.Long, Constant.Float, Constant.Double.

Returns:

decodeInstructionOwnerNameType

protected Triple<JvmType.Clazz,String,JvmType> decodeInstructionOwnerNameType(int offset,
                                                                              int line)

exceptionHandlers

public Pair<Integer,JvmType>[] exceptionHandlers(int offset,
                                                 int exceptionTableOffset)

annotationLength

protected int annotationLength(int offset)

getString
```
public final String getString(int index)
```
Read string from this classfile's constant pool.

Parameters:

index - index into constant pool

getConstant
```
public final Constant.Info getConstant(int index)
```
Read constant value from this classfile's constant pool.

Parameters:

index -

Returns:

Object representing value (e.g. Integer for int etc).

getConstantType
```
public final JvmType getConstantType(int index)
```
Get the type of the constant value from this classfile's constant pool.

Parameters:

index -

Returns:

JvmType object representing type of value

getClassName
```
public final String getClassName(int index)
```
This method is slightly ugly and it would be nice to get rid of it. It's used for getting the name of an exception.

Parameters:

index -

Returns:

readStream

protected static byte[] readStream(InputStream is)
                            throws IOException

Throws:: IOException

Class ClassFileReader

Nested Class Summary

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

BYTE

CHAR

DOUBLE

FLOAT

INT

LONG

SHORT

BOOLEAN

STRING

ENUM

CLASS

ANNOTATION

ARRAY

ACC_PUBLIC

ACC_PRIVATE

ACC_PROTECTED

ACC_STATIC

ACC_FINAL

ACC_VOLATILE

ACC_TRANSIENT

ACC_SYNTHETIC

ACC_BRIDGE

ACC_VARARGS

ACC_ANNOTATION

ACC_ENUM

ACC_SYNCHRONIZED

ACC_NATIVE

ACC_ABSTRACT

ACC_STRICT

ACC_INTERFACE

ACC_SUPER

CONSTANT_Class

CONSTANT_FieldRef

CONSTANT_MethodRef

CONSTANT_InterfaceMethodRef

CONSTANT_String

CONSTANT_Integer

CONSTANT_Float

CONSTANT_Long

CONSTANT_Double

CONSTANT_NameAndType

CONSTANT_Utf8

VM_BOOLEAN

VM_CHAR

VM_FLOAT

VM_DOUBLE

VM_BYTE

VM_SHORT

VM_INT

VM_LONG

INSN_MASK

WIDE_INSN

NOP

LOADVAR

STOREVAR

LOADCONST

STORECONST

ARRAYLOAD

ARRAYSTORE

ARRAYLENGTH

IINC

NEW

THROW

CHECKCAST

INSTANCEOF

MONITORENTER

MONITOREXIT

SWITCH

CONVERT

POP

DUP

DUPX1

DUPX2