org.apache.tools.ant.taskdefs.optional.sitraka.bytecode
Class Utils

java.lang.Object
  |
  +--org.apache.tools.ant.taskdefs.optional.sitraka.bytecode.Utils

public class Utils

extends java.lang.Object

Utilities mostly to manipulate methods and access flags.

Field Summary

static short	ACC_ABSTRACT abstract access flag
static short	ACC_FINAL final access flag
static short	ACC_INTERFACE interface access flag
static short	ACC_NATIVE native access flag
static short	ACC_PRIVATE private access flag
static short	ACC_PROTECTED protected access flag
static short	ACC_PUBLIC public access flag
static short	ACC_STATIC static access flag
static short	ACC_STRICT strict access flag
static short	ACC_SUPER super access flag
static short	ACC_SYNCHRONIZED synchronized access flag
static short	ACC_TRANSIENT transient access flag
static short	ACC_VOLATILE volatile access flag

Method Summary

static int	descriptor2java(java.lang.String descriptor, int i, java.lang.StringBuffer sb) Parse a single descriptor symbol and returns it java equivalent.
static java.lang.String	getClassAccess(int access_flags) return the class access flag as java modifiers
static java.lang.String	getFieldAccess(int access_flags) return the field access flag as java modifiers
static java.lang.String	getMethodAccess(int access_flags) return the method access flag as java modifiers
static java.lang.String[]	getMethodParams(java.lang.String descriptor) parse all parameters from a descritor into fields of java name.
static java.lang.String	getMethodReturnType(java.lang.String descriptor) return the object type of a return type.
static java.lang.String	getUTF8Value(ConstantPool pool, int index) return an UTF8 value from the pool located a a specific index.
static boolean	isAbstract(int access_flags) check for abstract access
static boolean	isClass(int access_flags) check for class access
static boolean	isFinal(int access_flags) chck for final flag
static boolean	isInterface(int access_flags) check for interface access
static boolean	isNative(int access_flags) check for native access
static boolean	isPrivate(int access_flags) check for private access
static boolean	isProtected(int access_flags) check for protected flag
static boolean	isPublic(int access_flags) check for public access
static boolean	isStatic(int access_flags) check for a static access
static boolean	isStrict(int access_flags) check for strict access
static boolean	isSuper(int access_flags) check for super flag
static boolean	isSynchronized(int access_flags) check for synchronized flag
static boolean	isTransient(int access_flags) check for transient flag
static boolean	isVolatile(int access_flags) check for volatile flag

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

ACC_PUBLIC

public static final short ACC_PUBLIC

public access flag

See Also:

Constant Field Values

ACC_PRIVATE

public static final short ACC_PRIVATE

private access flag

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Constant Field Values

ACC_PROTECTED

public static final short ACC_PROTECTED

protected access flag

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Constant Field Values

ACC_STATIC

public static final short ACC_STATIC

static access flag

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Constant Field Values

ACC_FINAL

public static final short ACC_FINAL

final access flag

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Constant Field Values

ACC_SUPER

public static final short ACC_SUPER

super access flag

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Constant Field Values

ACC_SYNCHRONIZED

public static final short ACC_SYNCHRONIZED

synchronized access flag

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Constant Field Values

ACC_VOLATILE

public static final short ACC_VOLATILE

volatile access flag

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Constant Field Values

ACC_TRANSIENT

public static final short ACC_TRANSIENT

transient access flag

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Constant Field Values

ACC_NATIVE

public static final short ACC_NATIVE

native access flag

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Constant Field Values

ACC_INTERFACE

public static final short ACC_INTERFACE

interface access flag

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Constant Field Values

ACC_ABSTRACT

public static final short ACC_ABSTRACT

abstract access flag

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Constant Field Values

ACC_STRICT

public static final short ACC_STRICT

strict access flag

See Also:

Constant Field Values

Method Detail

getUTF8Value

public static java.lang.String getUTF8Value(ConstantPool pool,
                                            int index)

return an UTF8 value from the pool located a a specific index.

Parameters:

pool - the constant pool to look at

index - index of the UTF8 value in the constant pool

Returns:

the value of the string if it exists

Throws:

java.lang.ClassCastException - if the index is not an UTF8 constant.

getMethodParams

public static java.lang.String[] getMethodParams(java.lang.String descriptor)

parse all parameters from a descritor into fields of java name.

Parameters:

descriptor - of a method.

Returns:

the parameter list of a given method descriptor. Each string represent a java object with its fully qualified classname or the primitive name such as int, long, ...

getMethodReturnType

public static java.lang.String getMethodReturnType(java.lang.String descriptor)

return the object type of a return type.

Parameters:

descriptor -

Returns:

get the return type objet of a given descriptor

descriptor2java

public static int descriptor2java(java.lang.String descriptor,
                                  int i,
                                  java.lang.StringBuffer sb)

Parse a single descriptor symbol and returns it java equivalent.

Parameters:

descriptor - the descriptor symbol.

i - the index to look at the symbol in the descriptor string

sb - the stringbuffer to return the java equivalent of the symbol

Returns:

the index after the descriptor symbol

isAbstract

public static boolean isAbstract(int access_flags)

check for abstract access

Parameters:

access_flags - access flags

isPublic

public static boolean isPublic(int access_flags)

check for public access

Parameters:

access_flags - access flags

isStatic

public static boolean isStatic(int access_flags)

check for a static access

Parameters:

access_flags - access flags

isNative

public static boolean isNative(int access_flags)

check for native access

Parameters:

access_flags - access flags

isClass

public static boolean isClass(int access_flags)

check for class access

Parameters:

access_flags - access flags

isStrict

public static boolean isStrict(int access_flags)

check for strict access

Parameters:

access_flags - access flags

isInterface

public static boolean isInterface(int access_flags)

check for interface access

Parameters:

access_flags - access flags

isPrivate

public static boolean isPrivate(int access_flags)

check for private access

Parameters:

access_flags - access flags

isTransient

public static boolean isTransient(int access_flags)

check for transient flag

Parameters:

access_flags - access flags

isVolatile

public static boolean isVolatile(int access_flags)

check for volatile flag

Parameters:

access_flags - access flags

isSuper

public static boolean isSuper(int access_flags)

check for super flag

Parameters:

access_flags - access flag

isProtected

public static boolean isProtected(int access_flags)

check for protected flag

Parameters:

access_flags - access flags

isFinal

public static boolean isFinal(int access_flags)

chck for final flag

Parameters:

access_flags - access flags

isSynchronized

public static boolean isSynchronized(int access_flags)

check for synchronized flag

Parameters:

access_flags - access flags

getMethodAccess

public static java.lang.String getMethodAccess(int access_flags)

return the method access flag as java modifiers

Parameters:

access_flags - access flags

Returns:

the access flags as modifier strings

getFieldAccess

public static java.lang.String getFieldAccess(int access_flags)

return the field access flag as java modifiers

Parameters:

access_flags - access flags

Returns:

the access flags as modifier strings

getClassAccess

public static java.lang.String getClassAccess(int access_flags)

return the class access flag as java modifiers

Parameters:

access_flags - access flags

Returns:

the access flags as modifier strings