public class ClassWriter extends ClassVisitor
ClassVisitor
that generates classes in bytecode form. More
precisely this visitor generates a byte array conforming to the Java class
file format. It can be used alone, to generate a Java class "from scratch",
or with one or more ClassReader
and adapter class visitor
to generate a modified class from one or more existing Java classes.Modifier and Type | Field and Description |
---|---|
(package private) static int |
ACC_SYNTHETIC_ATTRIBUTE
Pseudo access flag to distinguish between the synthetic attribute and the
synthetic access flag.
|
private int |
access
The access flags of this class.
|
private AnnotationWriter |
anns
The runtime visible annotations of this class.
|
private Attribute |
attrs
The non standard attributes of this class.
|
(package private) ByteVector |
bootstrapMethods
The BootstrapMethods attribute.
|
(package private) int |
bootstrapMethodsCount
The number of entries in the BootstrapMethods attribute.
|
(package private) static int |
BSM
The type of BootstrapMethods items.
|
(package private) static int |
CLASS
The type of CONSTANT_Class constant pool items.
|
static int |
COMPUTE_FRAMES
Flag to automatically compute the stack map frames of methods from
scratch.
|
static int |
COMPUTE_MAXS
Flag to automatically compute the maximum stack size and the maximum
number of local variables of methods.
|
private boolean |
computeFrames
true if the stack map frames must be recomputed from scratch.
|
private boolean |
computeMaxs
true if the maximum stack size and number of local variables
must be automatically computed.
|
(package private) ClassReader |
cr
The class reader from which this class writer was constructed, if any.
|
(package private) static int |
DOUBLE
The type of CONSTANT_Double constant pool items.
|
private int |
enclosingMethod
The constant pool item that contains the name and descriptor of the
enclosing method of this class.
|
private int |
enclosingMethodOwner
The constant pool item that contains the name of the enclosing class of
this class.
|
(package private) static int |
FIELD
The type of CONSTANT_Fieldref constant pool items.
|
(package private) static int |
FIELDORMETH_INSN
The type of field and method invocations instructions.
|
(package private) FieldWriter |
firstField
The fields of this class.
|
(package private) MethodWriter |
firstMethod
The methods of this class.
|
(package private) static int |
FLOAT
The type of CONSTANT_Float constant pool items.
|
(package private) static int |
HANDLE
The type of CONSTANT_MethodHandle constant pool items.
|
(package private) static int |
HANDLE_BASE
The base value for all CONSTANT_MethodHandle constant pool items.
|
private AnnotationWriter |
ianns
The runtime invisible annotations of this class.
|
(package private) static int |
IINC_INSN
The type of the IINC instruction.
|
(package private) static int |
IMETH
The type of CONSTANT_InterfaceMethodref constant pool items.
|
(package private) static int |
IMPLVAR_INSN
The type of instructions with an implicit local variable index argument.
|
(package private) int |
index
Index of the next item to be added in the constant pool.
|
(package private) static int |
INDY
The type of CONSTANT_InvokeDynamic constant pool items.
|
(package private) static int |
INDYMETH_INSN
The type of the INVOKEDYNAMIC instruction.
|
private ByteVector |
innerClasses
The InnerClasses attribute.
|
private int |
innerClassesCount
The number of entries in the InnerClasses attribute.
|
(package private) static int |
INT
The type of CONSTANT_Integer constant pool items.
|
private int |
interfaceCount
Number of interfaces implemented or extended by this class or interface.
|
private int[] |
interfaces
The interfaces implemented or extended by this class or interface.
|
(package private) boolean |
invalidFrames
true if the stack map tables of this class are invalid.
|
private AnnotationWriter |
itanns
The runtime invisible type annotations of this class.
|
(package private) Item[] |
items
The constant pool's hash table data.
|
(package private) static int |
ITFMETH_INSN
The type of the INVOKEINTERFACE/INVOKEDYNAMIC instruction.
|
(package private) Item |
key
A reusable key used to look for items in the
items hash table. |
(package private) Item |
key2
A reusable key used to look for items in the
items hash table. |
(package private) Item |
key3
A reusable key used to look for items in the
items hash table. |
(package private) Item |
key4
A reusable key used to look for items in the
items hash table. |
(package private) static int |
LABEL_INSN
The type of instructions with a 2 bytes bytecode offset label.
|
(package private) static int |
LABELW_INSN
The type of instructions with a 4 bytes bytecode offset label.
|
(package private) FieldWriter |
lastField
The fields of this class.
|
(package private) MethodWriter |
lastMethod
The methods of this class.
|
(package private) static int |
LDC_INSN
The type of the LDC instruction.
|
(package private) static int |
LDCW_INSN
The type of the LDC_W and LDC2_W instructions.
|
(package private) static int |
LONG
The type of CONSTANT_Long constant pool items.
|
(package private) static int |
LOOK_INSN
The type of the LOOKUPSWITCH instruction.
|
(package private) static int |
MANA_INSN
The type of the MULTIANEWARRAY instruction.
|
(package private) static int |
METH
The type of CONSTANT_Methodref constant pool items.
|
(package private) static int |
MTYPE
The type of CONSTANT_MethodType constant pool items.
|
private int |
name
The constant pool item that contains the internal name of this class.
|
(package private) static int |
NAME_TYPE
The type of CONSTANT_NameAndType constant pool items.
|
(package private) static int |
NOARG_INSN
The type of instructions without any argument.
|
(package private) ByteVector |
pool
The constant pool of this class.
|
(package private) static int |
SBYTE_INSN
The type of instructions with an signed byte argument.
|
(package private) static int |
SHORT_INSN
The type of instructions with an signed short argument.
|
private int |
signature
The constant pool item that contains the signature of this class.
|
private ByteVector |
sourceDebug
The SourceDebug attribute of this class.
|
private int |
sourceFile
The index of the constant pool item that contains the name of the source
file from which this class was compiled.
|
(package private) static int |
STR
The type of CONSTANT_String constant pool items.
|
private int |
superName
The constant pool item that contains the internal name of the super class
of this class.
|
(package private) static int |
TABL_INSN
The type of the TABLESWITCH instruction.
|
private AnnotationWriter |
tanns
The runtime visible type annotations of this class.
|
(package private) java.lang.String |
thisName
The internal name of this class.
|
(package private) int |
threshold
The threshold of the constant pool's hash table.
|
(package private) static int |
TO_ACC_SYNTHETIC
Factor to convert from ACC_SYNTHETIC_ATTRIBUTE to Opcode.ACC_SYNTHETIC.
|
(package private) static byte[] |
TYPE
The instruction types of all JVM opcodes.
|
(package private) static int |
TYPE_INSN
The type of instructions with a type descriptor argument.
|
(package private) static int |
TYPE_MERGED
Merged type Item stored in the ClassWriter
typeTable ,
instead of the constant pool, in order to avoid clashes with normal
constant pool items in the ClassWriter constant pool's hash table. |
(package private) static int |
TYPE_NORMAL
Normal type Item stored in the ClassWriter
typeTable ,
instead of the constant pool, in order to avoid clashes with normal
constant pool items in the ClassWriter constant pool's hash table. |
(package private) static int |
TYPE_UNINIT
Uninitialized type Item stored in the ClassWriter
typeTable , instead of the constant pool, in order to
avoid clashes with normal constant pool items in the ClassWriter constant
pool's hash table. |
private short |
typeCount
Number of elements in the
typeTable array. |
(package private) Item[] |
typeTable
A type table used to temporarily store internal names that will not
necessarily be stored in the constant pool.
|
(package private) static int |
UTF8
The type of CONSTANT_Utf8 constant pool items.
|
(package private) static int |
VAR_INSN
The type of instructions with a local variable index argument.
|
(package private) int |
version
Minor and major version numbers of the class to be generated.
|
(package private) static int |
WIDE_INSN
The type of the WIDE instruction.
|
api, cv
Constructor and Description |
---|
ClassWriter(ClassReader classReader,
int flags)
Constructs a new
ClassWriter object and enables optimizations for
"mostly add" bytecode transformations. |
ClassWriter(int flags)
Constructs a new
ClassWriter object. |
Modifier and Type | Method and Description |
---|---|
private Item |
addType(Item item)
Adds the given Item to
typeTable . |
(package private) int |
addType(java.lang.String type)
Adds the given internal name to
typeTable and returns its index. |
(package private) int |
addUninitializedType(java.lang.String type,
int offset)
Adds the given "uninitialized" type to
typeTable and returns its
index. |
private Item |
get(Item key)
Returns the constant pool's hash table item which is equal to the given
item.
|
protected java.lang.ClassLoader |
getClassLoader() |
protected java.lang.String |
getCommonSuperClass(java.lang.String type1,
java.lang.String type2)
Returns the common super type of the two given types.
|
(package private) int |
getMergedType(int type1,
int type2)
Returns the index of the common super type of the two given types.
|
int |
newClass(java.lang.String value)
Adds a class reference to the constant pool of the class being build.
|
(package private) Item |
newClassItem(java.lang.String value)
Adds a class reference to the constant pool of the class being build.
|
int |
newConst(java.lang.Object cst)
Adds a number or string constant to the constant pool of the class being
build.
|
(package private) Item |
newConstItem(java.lang.Object cst)
Adds a number or string constant to the constant pool of the class being
build.
|
(package private) Item |
newDouble(double value)
Adds a double to the constant pool of the class being build.
|
int |
newField(java.lang.String owner,
java.lang.String name,
java.lang.String desc)
Adds a field reference to the constant pool of the class being build.
|
(package private) Item |
newFieldItem(java.lang.String owner,
java.lang.String name,
java.lang.String desc)
Adds a field reference to the constant pool of the class being build.
|
(package private) Item |
newFloat(float value)
Adds a float to the constant pool of the class being build.
|
int |
newHandle(int tag,
java.lang.String owner,
java.lang.String name,
java.lang.String desc)
Deprecated.
this method is superseded by
newHandle(int, String, String, String, boolean) . |
int |
newHandle(int tag,
java.lang.String owner,
java.lang.String name,
java.lang.String desc,
boolean itf)
Adds a handle to the constant pool of the class being build.
|
(package private) Item |
newHandleItem(int tag,
java.lang.String owner,
java.lang.String name,
java.lang.String desc,
boolean itf)
Adds a handle to the constant pool of the class being build.
|
(package private) Item |
newInteger(int value)
Adds an integer to the constant pool of the class being build.
|
int |
newInvokeDynamic(java.lang.String name,
java.lang.String desc,
Handle bsm,
java.lang.Object... bsmArgs)
Adds an invokedynamic reference to the constant pool of the class being
build.
|
(package private) Item |
newInvokeDynamicItem(java.lang.String name,
java.lang.String desc,
Handle bsm,
java.lang.Object... bsmArgs)
Adds an invokedynamic reference to the constant pool of the class being
build.
|
(package private) Item |
newLong(long value)
Adds a long to the constant pool of the class being build.
|
int |
newMethod(java.lang.String owner,
java.lang.String name,
java.lang.String desc,
boolean itf)
Adds a method reference to the constant pool of the class being build.
|
(package private) Item |
newMethodItem(java.lang.String owner,
java.lang.String name,
java.lang.String desc,
boolean itf)
Adds a method reference to the constant pool of the class being build.
|
int |
newMethodType(java.lang.String methodDesc)
Adds a method type reference to the constant pool of the class being
build.
|
(package private) Item |
newMethodTypeItem(java.lang.String methodDesc)
Adds a method type reference to the constant pool of the class being
build.
|
int |
newNameType(java.lang.String name,
java.lang.String desc)
Adds a name and type to the constant pool of the class being build.
|
(package private) Item |
newNameTypeItem(java.lang.String name,
java.lang.String desc)
Adds a name and type to the constant pool of the class being build.
|
private Item |
newString(java.lang.String value)
Adds a string to the constant pool of the class being build.
|
int |
newUTF8(java.lang.String value)
Adds an UTF8 string to the constant pool of the class being build.
|
private void |
put(Item i)
Puts the given item in the constant pool's hash table.
|
private void |
put112(int b1,
int b2,
int s)
Puts two bytes and one short into the constant pool.
|
private void |
put122(int b,
int s1,
int s2)
Puts one byte and two shorts into the constant pool.
|
byte[] |
toByteArray()
Returns the bytecode of the class that was build with this class writer.
|
void |
visit(int version,
int access,
java.lang.String name,
java.lang.String signature,
java.lang.String superName,
java.lang.String[] interfaces)
Visits the header of the class.
|
AnnotationVisitor |
visitAnnotation(java.lang.String desc,
boolean visible)
Visits an annotation of the class.
|
void |
visitAttribute(Attribute attr)
Visits a non standard attribute of the class.
|
void |
visitEnd()
Visits the end of the class.
|
FieldVisitor |
visitField(int access,
java.lang.String name,
java.lang.String desc,
java.lang.String signature,
java.lang.Object value)
Visits a field of the class.
|
void |
visitInnerClass(java.lang.String name,
java.lang.String outerName,
java.lang.String innerName,
int access)
Visits information about an inner class.
|
MethodVisitor |
visitMethod(int access,
java.lang.String name,
java.lang.String desc,
java.lang.String signature,
java.lang.String[] exceptions)
Visits a method of the class.
|
void |
visitOuterClass(java.lang.String owner,
java.lang.String name,
java.lang.String desc)
Visits the enclosing class of the class.
|
void |
visitSource(java.lang.String file,
java.lang.String debug)
Visits the source of the class.
|
AnnotationVisitor |
visitTypeAnnotation(int typeRef,
TypePath typePath,
java.lang.String desc,
boolean visible)
Visits an annotation on a type in the class signature.
|
public static final int COMPUTE_MAXS
visitMaxs
method of the
MethodVisitor
returned by the visitMethod
method will be ignored, and computed automatically from the signature and
the bytecode of each method.ClassWriter(int)
,
Constant Field Valuespublic static final int COMPUTE_FRAMES
MethodVisitor.visitFrame(int, int, java.lang.Object[], int, java.lang.Object[])
method are ignored, and the stack map
frames are recomputed from the methods bytecode. The arguments of the
visitMaxs
method are also ignored and
recomputed from the bytecode. In other words, computeFrames implies
computeMaxs.ClassWriter(int)
,
Constant Field Valuesstatic final int ACC_SYNTHETIC_ATTRIBUTE
static final int TO_ACC_SYNTHETIC
static final int NOARG_INSN
static final int SBYTE_INSN
static final int SHORT_INSN
static final int VAR_INSN
static final int IMPLVAR_INSN
static final int TYPE_INSN
static final int FIELDORMETH_INSN
static final int ITFMETH_INSN
static final int INDYMETH_INSN
static final int LABEL_INSN
static final int LABELW_INSN
static final int LDC_INSN
static final int LDCW_INSN
static final int IINC_INSN
static final int TABL_INSN
static final int LOOK_INSN
static final int MANA_INSN
static final int WIDE_INSN
static final byte[] TYPE
static final int CLASS
static final int FIELD
static final int METH
static final int IMETH
static final int STR
static final int INT
static final int FLOAT
static final int LONG
static final int DOUBLE
static final int NAME_TYPE
static final int UTF8
static final int MTYPE
static final int HANDLE
static final int INDY
static final int HANDLE_BASE
static final int TYPE_NORMAL
typeTable
,
instead of the constant pool, in order to avoid clashes with normal
constant pool items in the ClassWriter constant pool's hash table.static final int TYPE_UNINIT
typeTable
, instead of the constant pool, in order to
avoid clashes with normal constant pool items in the ClassWriter constant
pool's hash table.static final int TYPE_MERGED
typeTable
,
instead of the constant pool, in order to avoid clashes with normal
constant pool items in the ClassWriter constant pool's hash table.static final int BSM
ClassReader cr
int version
int index
final ByteVector pool
Item[] items
int threshold
Item[] typeTable
items
hash table. These two arrays allow
to retrieve an Item from its index or, conversely, to get the index of an
Item from its value. Each Item stores an internal name in its
Item.strVal1
field.private short typeCount
typeTable
array.private int access
private int name
java.lang.String thisName
private int signature
private int superName
private int interfaceCount
private int[] interfaces
private int sourceFile
private ByteVector sourceDebug
private int enclosingMethodOwner
private int enclosingMethod
private AnnotationWriter anns
private AnnotationWriter ianns
private AnnotationWriter tanns
private AnnotationWriter itanns
private Attribute attrs
private int innerClassesCount
private ByteVector innerClasses
int bootstrapMethodsCount
ByteVector bootstrapMethods
FieldWriter firstField
FieldWriter
objects, linked to each other by their
FieldVisitor.fv
field. This field stores the first element of this
list.FieldWriter lastField
FieldWriter
objects, linked to each other by their
FieldVisitor.fv
field. This field stores the last element of this
list.MethodWriter firstMethod
MethodWriter
objects, linked to each other by their
MethodVisitor.mv
field. This field stores the first element of
this list.MethodWriter lastMethod
MethodWriter
objects, linked to each other by their
MethodVisitor.mv
field. This field stores the last element of this
list.private boolean computeMaxs
private boolean computeFrames
boolean invalidFrames
MethodWriter.resizeInstructions()
method cannot transform existing
stack map tables, and so produces potentially invalid classes when it is
executed. In this case the class is reread and rewritten with the
COMPUTE_FRAMES
option (the resizeInstructions method can resize
stack map tables when this option is used).public ClassWriter(int flags)
ClassWriter
object.flags
- option flags that can be used to modify the default behavior
of this class. See COMPUTE_MAXS
,
COMPUTE_FRAMES
.public ClassWriter(ClassReader classReader, int flags)
ClassWriter
object and enables optimizations for
"mostly add" bytecode transformations. These optimizations are the
following:
ClassReader
receives MethodVisitor
objects that come from
a ClassWriter
(and not from any other ClassVisitor
instance).classReader
- the ClassReader
used to read the original class. It
will be used to copy the entire constant pool from the
original class and also to copy other fragments of original
bytecode where applicable.flags
- option flags that can be used to modify the default behavior
of this class. These option flags do not affect methods
that are copied as is in the new class. This means that the
maximum stack size nor the stack frames will be computed for
these methods. See COMPUTE_MAXS
,
COMPUTE_FRAMES
.public final void visit(int version, int access, java.lang.String name, java.lang.String signature, java.lang.String superName, java.lang.String[] interfaces)
ClassVisitor
visit
in class ClassVisitor
version
- the class version.access
- the class's access flags (see Opcodes
). This parameter
also indicates if the class is deprecated.name
- the internal name of the class (see
getInternalName
).signature
- the signature of this class. May be null if the class
is not a generic one, and does not extend or implement generic
classes or interfaces.superName
- the internal of name of the super class (see
getInternalName
). For
interfaces, the super class is Object
. May be
null, but only for the Object
class.interfaces
- the internal names of the class's interfaces (see
getInternalName
). May be
null.public final void visitSource(java.lang.String file, java.lang.String debug)
ClassVisitor
visitSource
in class ClassVisitor
file
- the name of the source file from which the class was compiled.
May be null.debug
- additional debug information to compute the correspondance
between source and compiled elements of the class. May be
null.public final void visitOuterClass(java.lang.String owner, java.lang.String name, java.lang.String desc)
ClassVisitor
visitOuterClass
in class ClassVisitor
owner
- internal name of the enclosing class of the class.name
- the name of the method that contains the class, or
null if the class is not enclosed in a method of its
enclosing class.desc
- the descriptor of the method that contains the class, or
null if the class is not enclosed in a method of its
enclosing class.public final AnnotationVisitor visitAnnotation(java.lang.String desc, boolean visible)
ClassVisitor
visitAnnotation
in class ClassVisitor
desc
- the class descriptor of the annotation class.visible
- true if the annotation is visible at runtime.public final AnnotationVisitor visitTypeAnnotation(int typeRef, TypePath typePath, java.lang.String desc, boolean visible)
ClassVisitor
visitTypeAnnotation
in class ClassVisitor
typeRef
- a reference to the annotated type. The sort of this type
reference must be CLASS_TYPE_PARAMETER
,
CLASS_TYPE_PARAMETER_BOUND
or
CLASS_EXTENDS
. See
TypeReference
.typePath
- the path to the annotated type argument, wildcard bound, array
element type, or static inner type within 'typeRef'. May be
null if the annotation targets 'typeRef' as a whole.desc
- the class descriptor of the annotation class.visible
- true if the annotation is visible at runtime.public final void visitAttribute(Attribute attr)
ClassVisitor
visitAttribute
in class ClassVisitor
attr
- an attribute.public final void visitInnerClass(java.lang.String name, java.lang.String outerName, java.lang.String innerName, int access)
ClassVisitor
visitInnerClass
in class ClassVisitor
name
- the internal name of an inner class (see
getInternalName
).outerName
- the internal name of the class to which the inner class
belongs (see getInternalName
).
May be null for not member classes.innerName
- the (simple) name of the inner class inside its enclosing
class. May be null for anonymous inner classes.access
- the access flags of the inner class as originally declared in
the enclosing class.public final FieldVisitor visitField(int access, java.lang.String name, java.lang.String desc, java.lang.String signature, java.lang.Object value)
ClassVisitor
visitField
in class ClassVisitor
access
- the field's access flags (see Opcodes
). This parameter
also indicates if the field is synthetic and/or deprecated.name
- the field's name.desc
- the field's descriptor (see Type
).signature
- the field's signature. May be null if the field's
type does not use generic types.value
- the field's initial value. This parameter, which may be
null if the field does not have an initial value,
must be an Integer
, a Float
, a Long
, a
Double
or a String
(for int,
float, long or String fields
respectively). This parameter is only used for static
fields. Its value is ignored for non static fields, which
must be initialized through bytecode instructions in
constructors or methods.public final MethodVisitor visitMethod(int access, java.lang.String name, java.lang.String desc, java.lang.String signature, java.lang.String[] exceptions)
ClassVisitor
MethodVisitor
instance (or null) each time it is called,
i.e., it should not return a previously returned visitor.visitMethod
in class ClassVisitor
access
- the method's access flags (see Opcodes
). This
parameter also indicates if the method is synthetic and/or
deprecated.name
- the method's name.desc
- the method's descriptor (see Type
).signature
- the method's signature. May be null if the method
parameters, return type and exceptions do not use generic
types.exceptions
- the internal names of the method's exception classes (see
getInternalName
). May be
null.public final void visitEnd()
ClassVisitor
visitEnd
in class ClassVisitor
public byte[] toByteArray()
Item newConstItem(java.lang.Object cst)
cst
- the value of the constant to be added to the constant pool.
This parameter must be an Integer
, a Float
, a
Long
, a Double
, a String
or a
Type
.public int newConst(java.lang.Object cst)
Attribute
sub classes, and is
normally not needed by class generators or adapters.cst
- the value of the constant to be added to the constant pool.
This parameter must be an Integer
, a Float
, a
Long
, a Double
or a String
.public int newUTF8(java.lang.String value)
Attribute
sub classes, and is normally not
needed by class generators or adapters.value
- the String value.Item newClassItem(java.lang.String value)
Attribute
sub classes, and is
normally not needed by class generators or adapters.value
- the internal name of the class.public int newClass(java.lang.String value)
Attribute
sub classes, and is
normally not needed by class generators or adapters.value
- the internal name of the class.Item newMethodTypeItem(java.lang.String methodDesc)
Attribute
sub classes, and is
normally not needed by class generators or adapters.methodDesc
- method descriptor of the method type.public int newMethodType(java.lang.String methodDesc)
Attribute
sub classes, and is
normally not needed by class generators or adapters.methodDesc
- method descriptor of the method type.Item newHandleItem(int tag, java.lang.String owner, java.lang.String name, java.lang.String desc, boolean itf)
Attribute
sub classes, and is normally not needed by
class generators or adapters.tag
- the kind of this handle. Must be Opcodes.H_GETFIELD
,
Opcodes.H_GETSTATIC
, Opcodes.H_PUTFIELD
,
Opcodes.H_PUTSTATIC
, Opcodes.H_INVOKEVIRTUAL
,
Opcodes.H_INVOKESTATIC
,
Opcodes.H_INVOKESPECIAL
,
Opcodes.H_NEWINVOKESPECIAL
or
Opcodes.H_INVOKEINTERFACE
.owner
- the internal name of the field or method owner class.name
- the name of the field or method.desc
- the descriptor of the field or method.itf
- true if the owner is an interface.@Deprecated public int newHandle(int tag, java.lang.String owner, java.lang.String name, java.lang.String desc)
newHandle(int, String, String, String, boolean)
.Attribute
sub classes, and is normally not needed by
class generators or adapters.tag
- the kind of this handle. Must be Opcodes.H_GETFIELD
,
Opcodes.H_GETSTATIC
, Opcodes.H_PUTFIELD
,
Opcodes.H_PUTSTATIC
, Opcodes.H_INVOKEVIRTUAL
,
Opcodes.H_INVOKESTATIC
,
Opcodes.H_INVOKESPECIAL
,
Opcodes.H_NEWINVOKESPECIAL
or
Opcodes.H_INVOKEINTERFACE
.owner
- the internal name of the field or method owner class.name
- the name of the field or method.desc
- the descriptor of the field or method.public int newHandle(int tag, java.lang.String owner, java.lang.String name, java.lang.String desc, boolean itf)
Attribute
sub classes, and is normally not needed by
class generators or adapters.tag
- the kind of this handle. Must be Opcodes.H_GETFIELD
,
Opcodes.H_GETSTATIC
, Opcodes.H_PUTFIELD
,
Opcodes.H_PUTSTATIC
, Opcodes.H_INVOKEVIRTUAL
,
Opcodes.H_INVOKESTATIC
,
Opcodes.H_INVOKESPECIAL
,
Opcodes.H_NEWINVOKESPECIAL
or
Opcodes.H_INVOKEINTERFACE
.owner
- the internal name of the field or method owner class.name
- the name of the field or method.desc
- the descriptor of the field or method.itf
- true if the owner is an interface.Item newInvokeDynamicItem(java.lang.String name, java.lang.String desc, Handle bsm, java.lang.Object... bsmArgs)
Attribute
sub classes, and is
normally not needed by class generators or adapters.name
- name of the invoked method.desc
- descriptor of the invoke method.bsm
- the bootstrap method.bsmArgs
- the bootstrap method constant arguments.public int newInvokeDynamic(java.lang.String name, java.lang.String desc, Handle bsm, java.lang.Object... bsmArgs)
Attribute
sub classes, and is
normally not needed by class generators or adapters.name
- name of the invoked method.desc
- descriptor of the invoke method.bsm
- the bootstrap method.bsmArgs
- the bootstrap method constant arguments.Item newFieldItem(java.lang.String owner, java.lang.String name, java.lang.String desc)
owner
- the internal name of the field's owner class.name
- the field's name.desc
- the field's descriptor.public int newField(java.lang.String owner, java.lang.String name, java.lang.String desc)
Attribute
sub classes, and is
normally not needed by class generators or adapters.owner
- the internal name of the field's owner class.name
- the field's name.desc
- the field's descriptor.Item newMethodItem(java.lang.String owner, java.lang.String name, java.lang.String desc, boolean itf)
owner
- the internal name of the method's owner class.name
- the method's name.desc
- the method's descriptor.itf
- true if owner is an interface.public int newMethod(java.lang.String owner, java.lang.String name, java.lang.String desc, boolean itf)
Attribute
sub classes, and is
normally not needed by class generators or adapters.owner
- the internal name of the method's owner class.name
- the method's name.desc
- the method's descriptor.itf
- true if owner is an interface.Item newInteger(int value)
value
- the int value.Item newFloat(float value)
value
- the float value.Item newLong(long value)
value
- the long value.Item newDouble(double value)
value
- the double value.private Item newString(java.lang.String value)
value
- the String value.public int newNameType(java.lang.String name, java.lang.String desc)
Attribute
sub classes, and is normally not
needed by class generators or adapters.name
- a name.desc
- a type descriptor.Item newNameTypeItem(java.lang.String name, java.lang.String desc)
name
- a name.desc
- a type descriptor.int addType(java.lang.String type)
typeTable
and returns its index.
Does nothing if the type table already contains this internal name.type
- the internal name to be added to the type table.int addUninitializedType(java.lang.String type, int offset)
typeTable
and returns its
index. This method is used for UNINITIALIZED types, made of an internal
name and a bytecode offset.type
- the internal name to be added to the type table.offset
- the bytecode offset of the NEW instruction that created this
UNINITIALIZED type value.private Item addType(Item item)
typeTable
.item
- the value to be added to the type table.int getMergedType(int type1, int type2)
getCommonSuperClass(java.lang.String, java.lang.String)
and caches the result in the
items
hash table to speedup future calls with the same
parameters.protected java.lang.String getCommonSuperClass(java.lang.String type1, java.lang.String type2)
type1
- the internal name of a class.type2
- the internal name of another class.protected java.lang.ClassLoader getClassLoader()
private Item get(Item key)
key
- a constant pool item.private void put(Item i)
i
- the item to be added to the constant pool's hash table.private void put122(int b, int s1, int s2)
b
- a byte.s1
- a short.s2
- another short.private void put112(int b1, int b2, int s)
b1
- a byte.b2
- another byte.s
- a short.