Constructor and Description |
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Utility() |
Modifier and Type | Method and Description |
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static String |
accessToString(int access_flags)
Convert bit field of flags into string such as `static final'.
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static String |
accessToString(int access_flags,
boolean for_class)
Convert bit field of flags into string such as `static final'.
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static String |
classOrInterface(int access_flags) |
static int |
clearBit(int flag,
int i) |
static String |
codeToString(byte[] code,
ConstantPool constant_pool,
int index,
int length) |
static String |
codeToString(byte[] code,
ConstantPool constant_pool,
int index,
int length,
boolean verbose)
Disassemble a byte array of JVM byte codes starting from code line
`index' and return the disassembled string representation.
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static String |
codeToString(ByteSequence bytes,
ConstantPool constant_pool) |
static String |
codeToString(ByteSequence bytes,
ConstantPool constant_pool,
boolean verbose)
Disassemble a stream of byte codes and return the
string representation.
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static String |
compactClassName(String str)
Shorten long class names, java/lang/String becomes
String.
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static String |
compactClassName(String str,
boolean chopit)
Shorten long class names, java/lang/String becomes
java.lang.String,
e.g..
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static String |
compactClassName(String str,
String prefix,
boolean chopit)
Shorten long class name str, i.e., chop off the prefix,
if the
class name starts with this string and the flag chopit is true.
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static String |
convertString(String label)
Escape all occurences of newline chars '\n', quotes \", etc.
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static byte[] |
decode(String s,
boolean uncompress)
Decode a string back to a byte array.
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static String |
encode(byte[] bytes,
boolean compress)
Encode byte array it into Java identifier string, i.e., a string
that only contains the following characters: (a, ...
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static String |
fillup(String str,
int length,
boolean left_justify,
char fill)
Fillup char with up to length characters with char `fill' and justify it left or right.
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static String |
format(int i,
int length,
boolean left_justify,
char fill)
Return a string for an integer justified left or right and filled up with
`fill' characters if necessary.
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static Attribute[] |
getAnnotationAttributes(ConstantPoolGen cp,
List<AnnotationEntryGen> vec)
Converts a list of AnnotationGen objects into a set of attributes
that can be attached to the class file.
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static Attribute[] |
getParameterAnnotationAttributes(ConstantPoolGen cp,
List<AnnotationEntryGen>[] vec)
Annotations against a class are stored in one of four attribute kinds:
- RuntimeVisibleParameterAnnotations
- RuntimeInvisibleParameterAnnotations
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static String |
getSignature(String type)
Parse Java type such as "char", or "java.lang.String[]" and return the
signature in byte code format, e.g.
|
static boolean |
isJavaIdentifierPart(char ch) |
static boolean |
isSet(int flag,
int i) |
static String[] |
methodSignatureArgumentTypes(String signature) |
static String[] |
methodSignatureArgumentTypes(String signature,
boolean chopit) |
static String |
methodSignatureReturnType(String signature) |
static String |
methodSignatureReturnType(String signature,
boolean chopit) |
static String |
methodSignatureToString(String signature,
String name,
String access)
Converts method signature to string with all class names compacted.
|
static String |
methodSignatureToString(String signature,
String name,
String access,
boolean chopit) |
static String |
methodSignatureToString(String signature,
String name,
String access,
boolean chopit,
LocalVariableTable vars)
A returntype signature represents the return value from a method.
|
static String |
methodTypeToSignature(String ret,
String[] argv)
Converts string containing the method return and argument types
to a byte code method signature.
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static String |
printArray(Object[] obj) |
static String |
printArray(Object[] obj,
boolean braces) |
static String |
printArray(Object[] obj,
boolean braces,
boolean quote) |
static void |
printArray(PrintStream out,
Object[] obj) |
static void |
printArray(PrintWriter out,
Object[] obj) |
static String |
replace(String str,
String old,
String new_)
Replace all occurrences of old in str with new.
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static short |
searchOpcode(String name)
Map opcode names to opcode numbers.
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static int |
setBit(int flag,
int i) |
static String |
signatureToString(String signature)
Converts signature to string with all class names compacted.
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static String |
signatureToString(String signature,
boolean chopit)
The field signature represents the value of an argument to a function or
the value of a variable.
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static String |
toHexString(byte[] bytes)
Convert bytes into hexadecimal string
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static byte |
typeOfMethodSignature(String signature)
Return type of method signature as a byte value as defined in Constants
|
static byte |
typeOfSignature(String signature)
Return type of signature as a byte value as defined in Constants
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public static String accessToString(int access_flags)
access_flags
- Access flagspublic static String accessToString(int access_flags, boolean for_class)
access_flags
- Access flagsfor_class
- access flags are for class qualifiers ?public static String classOrInterface(int access_flags)
access_flags
- the class flagspublic static String codeToString(byte[] code, ConstantPool constant_pool, int index, int length, boolean verbose)
code
- byte code arrayconstant_pool
- Array of constantsindex
- offset in `code' array
(number of opcodes, not bytes!)length
- number of opcodes to decompile, -1 for allverbose
- be verbose, e.g. print constant pool indexpublic static String codeToString(byte[] code, ConstantPool constant_pool, int index, int length)
public static String codeToString(ByteSequence bytes, ConstantPool constant_pool, boolean verbose) throws IOException
bytes
- stream of bytesconstant_pool
- Array of constantsverbose
- be verbose, e.g. print constant pool indexIOException
- if a failure from reading from the bytes argument occurspublic static String codeToString(ByteSequence bytes, ConstantPool constant_pool) throws IOException
IOException
public static String compactClassName(String str)
str
- The long class namepublic static String compactClassName(String str, String prefix, boolean chopit)
str
- The long class nameprefix
- The prefix the get rid offchopit
- Flag that determines whether chopping is executed or notpublic static String compactClassName(String str, boolean chopit)
str
- The long class namechopit
- Flag that determines whether chopping is executed or notpublic static int setBit(int flag, int i)
public static int clearBit(int flag, int i)
public static boolean isSet(int flag, int i)
public static String methodTypeToSignature(String ret, String[] argv) throws ClassFormatException
ret
- Return type of methodargv
- Types of method argumentsClassFormatException
- if the signature is for Voidpublic static String[] methodSignatureArgumentTypes(String signature) throws ClassFormatException
signature
- Method signatureClassFormatException
public static String[] methodSignatureArgumentTypes(String signature, boolean chopit) throws ClassFormatException
signature
- Method signaturechopit
- Shorten class names ?ClassFormatException
public static String methodSignatureReturnType(String signature) throws ClassFormatException
signature
- Method signatureClassFormatException
public static String methodSignatureReturnType(String signature, boolean chopit) throws ClassFormatException
signature
- Method signaturechopit
- Shorten class names ?ClassFormatException
public static String methodSignatureToString(String signature, String name, String access)
signature
- to convertname
- of methodaccess
- flags of methodpublic static String methodSignatureToString(String signature, String name, String access, boolean chopit)
public static String methodSignatureToString(String signature, String name, String access, boolean chopit, LocalVariableTable vars) throws ClassFormatException
signature
- Method signaturename
- Method nameaccess
- Method access rightschopit
- vars
- ClassFormatException
public static String replace(String str, String old, String new_)
str
- String to permuteold
- String to be replacednew_
- Replacement stringpublic static String signatureToString(String signature)
signature
- to convertpublic static String signatureToString(String signature, boolean chopit)
This method converts this string into a Java type declaration such as `String[]' and throws a `ClassFormatException' when the parsed type is invalid.::= ::= | | ::= B|C|D|F|I|J|S|Z ::= L ; ::= [ The meaning of the base types is as follows: B byte signed byte C char character D double double precision IEEE float F float single precision IEEE float I int integer J long long integer L ; ... an object of the given class S short signed short Z boolean true or false [ ... array
signature
- Class signaturechopit
- Flag that determines whether chopping is executed or notClassFormatException
public static String getSignature(String type)
type
- Java typepublic static byte typeOfMethodSignature(String signature) throws ClassFormatException
signature
- in format described aboveClassFormatException
- if signature is not a method signatureConstants
public static byte typeOfSignature(String signature) throws ClassFormatException
signature
- in format described aboveClassFormatException
- if signature isn't a known typeConstants
public static short searchOpcode(String name)
public static String toHexString(byte[] bytes)
bytes
- an array of bytes to convert to hexadecimalpublic static String format(int i, int length, boolean left_justify, char fill)
i
- integer to formatlength
- length of desired stringleft_justify
- format left or rightfill
- fill characterpublic static String fillup(String str, int length, boolean left_justify, char fill)
str
- string to formatlength
- length of desired stringleft_justify
- format left or rightfill
- fill characterpublic static void printArray(PrintStream out, Object[] obj)
public static void printArray(PrintWriter out, Object[] obj)
public static boolean isJavaIdentifierPart(char ch)
ch
- the character to test if it's part of an identifierpublic static String encode(byte[] bytes, boolean compress) throws IOException
This operation inflates the original byte array by roughly 40-50%
bytes
- the byte array to convertcompress
- use gzip to minimize stringIOException
- if there's a gzip exceptionpublic static byte[] decode(String s, boolean uncompress) throws IOException
s
- the string to convertuncompress
- use gzip to uncompress the stream of bytesIOException
- if there's a gzip exceptionpublic static String convertString(String label)
public static Attribute[] getAnnotationAttributes(ConstantPoolGen cp, List<AnnotationEntryGen> vec)
cp
- The constant pool gen where we can create the necessary name refsvec
- A list of AnnotationGen objectspublic static Attribute[] getParameterAnnotationAttributes(ConstantPoolGen cp, List<AnnotationEntryGen>[] vec)
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