public class CodeAttribute extends AttributeInfo implements Opcode
Code_attribute.
To browse the code field of
a Code_attribute structure,
use CodeIterator.
CodeIterator| Modifier and Type | Class and Description |
|---|---|
static class |
CodeAttribute.RuntimeCopyException
An exception that may be thrown by
copy()
in CodeAttribute. |
| Modifier and Type | Field and Description |
|---|---|
static String |
tag
The name of this attribute
"Code". |
constPoolAALOAD, AASTORE, ACONST_NULL, ALOAD, ALOAD_0, ALOAD_1, ALOAD_2, ALOAD_3, ANEWARRAY, ARETURN, ARRAYLENGTH, ASTORE, ASTORE_0, ASTORE_1, ASTORE_2, ASTORE_3, ATHROW, BALOAD, BASTORE, BIPUSH, CALOAD, CASTORE, CHECKCAST, D2F, D2I, D2L, DADD, DALOAD, DASTORE, DCMPG, DCMPL, DCONST_0, DCONST_1, DDIV, DLOAD, DLOAD_0, DLOAD_1, DLOAD_2, DLOAD_3, DMUL, DNEG, DREM, DRETURN, DSTORE, DSTORE_0, DSTORE_1, DSTORE_2, DSTORE_3, DSUB, DUP, DUP_X1, DUP_X2, DUP2, DUP2_X1, DUP2_X2, F2D, F2I, F2L, FADD, FALOAD, FASTORE, FCMPG, FCMPL, FCONST_0, FCONST_1, FCONST_2, FDIV, FLOAD, FLOAD_0, FLOAD_1, FLOAD_2, FLOAD_3, FMUL, FNEG, FREM, FRETURN, FSTORE, FSTORE_0, FSTORE_1, FSTORE_2, FSTORE_3, FSUB, GETFIELD, GETSTATIC, GOTO, GOTO_W, I2B, I2C, I2D, I2F, I2L, I2S, IADD, IALOAD, IAND, IASTORE, ICONST_0, ICONST_1, ICONST_2, ICONST_3, ICONST_4, ICONST_5, ICONST_M1, IDIV, IF_ACMPEQ, IF_ACMPNE, IF_ICMPEQ, IF_ICMPGE, IF_ICMPGT, IF_ICMPLE, IF_ICMPLT, IF_ICMPNE, IFEQ, IFGE, IFGT, IFLE, IFLT, IFNE, IFNONNULL, IFNULL, IINC, ILOAD, ILOAD_0, ILOAD_1, ILOAD_2, ILOAD_3, IMUL, INEG, INSTANCEOF, INVOKEINTERFACE, INVOKESPECIAL, INVOKESTATIC, INVOKEVIRTUAL, IOR, IREM, IRETURN, ISHL, ISHR, ISTORE, ISTORE_0, ISTORE_1, ISTORE_2, ISTORE_3, ISUB, IUSHR, IXOR, JSR, JSR_W, L2D, L2F, L2I, LADD, LALOAD, LAND, LASTORE, LCMP, LCONST_0, LCONST_1, LDC, LDC_W, LDC2_W, LDIV, LLOAD, LLOAD_0, LLOAD_1, LLOAD_2, LLOAD_3, LMUL, LNEG, LOOKUPSWITCH, LOR, LREM, LRETURN, LSHL, LSHR, LSTORE, LSTORE_0, LSTORE_1, LSTORE_2, LSTORE_3, LSUB, LUSHR, LXOR, MONITORENTER, MONITOREXIT, MULTIANEWARRAY, NEW, NEWARRAY, NOP, POP, POP2, PUTFIELD, PUTSTATIC, RET, RETURN, SALOAD, SASTORE, SIPUSH, STACK_GROW, SWAP, T_BOOLEAN, T_BYTE, T_CHAR, T_DOUBLE, T_FLOAT, T_INT, T_LONG, T_SHORT, TABLESWITCH, WIDE| Constructor and Description |
|---|
CodeAttribute(ConstPool cp,
int stack,
int locals,
byte[] code,
ExceptionTable etable)
Constructs a
Code_attribute. |
| Modifier and Type | Method and Description |
|---|---|
int |
computeMaxStack()
Computes the maximum stack size and sets
max_stack
to the computed size. |
AttributeInfo |
copy(ConstPool newCp,
Map classnames)
Makes a copy.
|
byte[] |
get()
This method is not available.
|
AttributeInfo |
getAttribute(String name)
Returns the attribute with the specified name.
|
List |
getAttributes()
Returns
attributes[]. |
byte[] |
getCode()
Returns
code[]. |
int |
getCodeLength()
Returns
code_length. |
String |
getDeclaringClass()
Returns the name of the class declaring the method including
this code attribute.
|
ExceptionTable |
getExceptionTable()
Returns
exception_table[]. |
int |
getMaxLocals()
Returns
max_locals. |
int |
getMaxStack()
Returns
max_stack. |
void |
insertLocalVar(int where,
int size)
Changes the index numbers of the local variables
to append a new parameter.
|
CodeIterator |
iterator()
Makes a new iterator for reading this code attribute.
|
int |
length()
Returns the length of this
attribute_info
structure. |
void |
set(byte[] newinfo)
This method is not available.
|
void |
setAttribute(StackMap sm)
Adds a stack map table for J2ME (CLDC).
|
void |
setAttribute(StackMapTable smt)
Adds a stack map table.
|
void |
setMaxLocals(int value)
Sets
max_locals. |
void |
setMaxStack(int value)
Sets
max_stack. |
getConstPool, getNamepublic static final String tag
"Code".public CodeAttribute(ConstPool cp, int stack, int locals, byte[] code, ExceptionTable etable)
Code_attribute.cp - constant pool tablestack - max_stacklocals - max_localscode - code[]etable - exception_table[]public AttributeInfo copy(ConstPool newCp, Map classnames) throws CodeAttribute.RuntimeCopyException
Map object.copy in class AttributeInfonewCp - the constant pool table used by the new copy.classnames - pairs of replaced and substituted
class names.CodeAttribute object.CodeAttribute.RuntimeCopyException - if a BadBytecode
exception is thrown, it is
converted into
RuntimeCopyException.public int length()
attribute_info
structure.
The returned value is attribute_length + 6.length in class AttributeInfopublic byte[] get()
get in class AttributeInfoUnsupportedOperationException - always thrown.public void set(byte[] newinfo)
set in class AttributeInfoUnsupportedOperationException - always thrown.public String getDeclaringClass()
public int getMaxStack()
max_stack.public void setMaxStack(int value)
max_stack.public int computeMaxStack()
throws BadBytecode
max_stack
to the computed size.max_stackBadBytecode - if this method fails in computing.public int getMaxLocals()
max_locals.public void setMaxLocals(int value)
max_locals.public int getCodeLength()
code_length.public byte[] getCode()
code[].public CodeIterator iterator()
public ExceptionTable getExceptionTable()
exception_table[].public List getAttributes()
attributes[].
It returns a list of AttributeInfo.
A new element can be added to the returned list
and an existing element can be removed from the list.AttributeInfopublic AttributeInfo getAttribute(String name)
name - attribute nameAttributeInfo object or null.public void setAttribute(StackMapTable smt)
smt - the stack map table added to this code attribute.
If it is null, a new stack map is not added.
Only the old stack map is removed.public void setAttribute(StackMap sm)
sm - the stack map table added to this code attribute.
If it is null, a new stack map is not added.
Only the old stack map is removed.public void insertLocalVar(int where,
int size)
throws BadBytecode
LocalVariableAttribute,
StackMapTable, or StackMap.
These attributes must be explicitly updated.where - the index of the new parameter.size - the type size of the new parameter (1 or 2).BadBytecodeLocalVariableAttribute.shiftIndex(int, int),
StackMapTable.insertLocal(int, int, int),
StackMap.insertLocal(int, int, int)Copyright © 2013. All rights reserved.