Package com.sun.jdo.api.persistence.enhancer.classfile

Class CodeAttribute

java.lang.Object

com.sun.jdo.api.persistence.enhancer.classfile.ClassAttribute

com.sun.jdo.api.persistence.enhancer.classfile.CodeAttribute

All Implemented Interfaces:

VMConstants

public class CodeAttribute
extends ClassAttribute

Subtype of ClassAttribute which describes the "Code" attribute associated with a method.

Field Summary

Fields

Modifier and Type	Field	Description
static final String	expectedAttrName

Fields inherited from interface com.sun.jdo.api.persistence.enhancer.classfile.VMConstants

ACCAbstract, ACCFinal, ACCInterface, ACCNative, ACCPrivate, ACCProtected, ACCPublic, ACCStatic, ACCSuper, ACCSynchronized, ACCTransient, ACCVolatile, CONSTANTClass, CONSTANTDouble, CONSTANTFieldRef, CONSTANTFloat, CONSTANTInteger, CONSTANTInterfaceMethodRef, CONSTANTLong, CONSTANTMethodRef, CONSTANTNameAndType, CONSTANTString, CONSTANTUnicode, CONSTANTUtf8, opc_aaload, opc_aastore, opc_aconst_null, opc_aload, opc_aload_0, opc_aload_1, opc_aload_2, opc_aload_3, opc_anewarray, opc_areturn, opc_arraylength, opc_astore, opc_astore_0, opc_astore_1, opc_astore_2, opc_astore_3, opc_athrow, opc_baload, opc_bastore, opc_bipush, opc_caload, opc_castore, opc_checkcast, opc_d2f, opc_d2i, opc_d2l, opc_dadd, opc_daload, opc_dastore, opc_dcmpg, opc_dcmpl, opc_dconst_0, opc_dconst_1, opc_ddiv, opc_dload, opc_dload_0, opc_dload_1, opc_dload_2, opc_dload_3, opc_dmul, opc_dneg, opc_drem, opc_dreturn, opc_dstore, opc_dstore_0, opc_dstore_1, opc_dstore_2, opc_dstore_3, opc_dsub, opc_dup, opc_dup_x1, opc_dup_x2, opc_dup2, opc_dup2_x1, opc_dup2_x2, opc_f2d, opc_f2i, opc_f2l, opc_fadd, opc_faload, opc_fastore, opc_fcmpg, opc_fcmpl, opc_fconst_0, opc_fconst_1, opc_fconst_2, opc_fdiv, opc_fload, opc_fload_0, opc_fload_1, opc_fload_2, opc_fload_3, opc_fmul, opc_fneg, opc_frem, opc_freturn, opc_fstore, opc_fstore_0, opc_fstore_1, opc_fstore_2, opc_fstore_3, opc_fsub, opc_getfield, opc_getstatic, opc_goto, opc_goto_w, opc_i2b, opc_i2c, opc_i2d, opc_i2f, opc_i2l, opc_i2s, opc_iadd, opc_iaload, opc_iand, opc_iastore, opc_iconst_0, opc_iconst_1, opc_iconst_2, opc_iconst_3, opc_iconst_4, opc_iconst_5, opc_iconst_m1, opc_idiv, opc_if_acmpeq, opc_if_acmpne, opc_if_icmpeq, opc_if_icmpge, opc_if_icmpgt, opc_if_icmple, opc_if_icmplt, opc_if_icmpne, opc_ifeq, opc_ifge, opc_ifgt, opc_ifle, opc_iflt, opc_ifne, opc_ifnonnull, opc_ifnull, opc_iinc, opc_iload, opc_iload_0, opc_iload_1, opc_iload_2, opc_iload_3, opc_imul, opc_ineg, opc_instanceof, opc_invokeinterface, opc_invokespecial, opc_invokestatic, opc_invokevirtual, opc_ior, opc_irem, opc_ireturn, opc_ishl, opc_ishr, opc_istore, opc_istore_0, opc_istore_1, opc_istore_2, opc_istore_3, opc_isub, opc_iushr, opc_ixor, opc_jsr, opc_jsr_w, opc_l2d, opc_l2f, opc_l2i, opc_ladd, opc_laload, opc_land, opc_lastore, opc_lcmp, opc_lconst_0, opc_lconst_1, opc_ldc, opc_ldc_w, opc_ldc2_w, opc_ldiv, opc_lload, opc_lload_0, opc_lload_1, opc_lload_2, opc_lload_3, opc_lmul, opc_lneg, opc_lookupswitch, opc_lor, opc_lrem, opc_lreturn, opc_lshl, opc_lshr, opc_lstore, opc_lstore_0, opc_lstore_1, opc_lstore_2, opc_lstore_3, opc_lsub, opc_lushr, opc_lxor, opc_monitorenter, opc_monitorexit, opc_multianewarray, opc_new, opc_newarray, opc_nop, opc_pop, opc_pop2, opc_putfield, opc_putstatic, opc_ret, opc_return, opc_saload, opc_sastore, opc_sipush, opc_swap, opc_tableswitch, opc_wide, opc_xxxunusedxxx, T_BOOLEAN, T_BYTE, T_CHAR, T_DOUBLE, T_FLOAT, T_INT, T_LONG, T_SHORT, T_TWOWORD, T_UNKNOWN, T_WORD, TC_INTERFACE, TC_OBJECT, TC_STRING

Constructor Summary

Constructors

Constructor	Description
CodeAttribute(ConstUtf8 attrName, byte[] dataBytes, com.sun.jdo.api.persistence.enhancer.classfile.CodeEnv codeEnv)	Constructs a CodeAttribute object for later disassembly
CodeAttribute(ConstUtf8 attrName, int maxStack, int maxLocals, Insn code, byte[] codeBytes, ExceptionTable excTable, AttributeVector codeAttrs, com.sun.jdo.api.persistence.enhancer.classfile.CodeEnv codeEnv)	Constructs a CodeAttribute object
CodeAttribute(ConstUtf8 attrName, int maxStack, int maxLocals, Insn code, ExceptionTable excTable, AttributeVector codeAttrs)	Constructs a CodeAttribute object for construction from scratch

Method Summary

Modifier and Type	Method	Description
AttributeVector	attributes()	Return the attributes which apply to this code
byte[]	byteCodes()	Return the java VM byte code sequence for this method - null for native and abstract methods
ExceptionTable	exceptionHandlers()	Return the exception ranges and handlers which apply to the code in this method.
int	localsUsed()	Return the maximum number of local variables used by this method
void	setLocalsUsed(int used)	Set the maximum number of local variables used by this method
void	setStackUsed(int used)	Set the maximum number of stack entries used by this method
void	setTheCode(Insn insn)	Install the instruction sequence for this method - the byte code array is later updated.
int	stackUsed()	Return the maximum number of stack entries used by this method
Insn	theCode()	Return the instruction sequence for this method - initially derived from the byte code array, but may later be modified

Methods inherited from class com.sun.jdo.api.persistence.enhancer.classfile.ClassAttribute

attrName

Methods inherited from class java.lang.Object

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

Field Details

expectedAttrName

public static final String expectedAttrName

See Also:

• Constant Field Values

Constructor Details

CodeAttribute

public CodeAttribute(ConstUtf8 attrName,
 int maxStack,
 int maxLocals,
 Insn code,
 ExceptionTable excTable,
 AttributeVector codeAttrs)

Constructs a CodeAttribute object for construction from scratch

CodeAttribute

public CodeAttribute(ConstUtf8 attrName,
 int maxStack,
 int maxLocals,
 Insn code,
 byte[] codeBytes,
 ExceptionTable excTable,
 AttributeVector codeAttrs,
 com.sun.jdo.api.persistence.enhancer.classfile.CodeEnv codeEnv)

Constructs a CodeAttribute object

CodeAttribute

public CodeAttribute(ConstUtf8 attrName,
 byte[] dataBytes,
 com.sun.jdo.api.persistence.enhancer.classfile.CodeEnv codeEnv)

Constructs a CodeAttribute object for later disassembly

Method Details

stackUsed

public int stackUsed()

Return the maximum number of stack entries used by this method

setStackUsed

public void setStackUsed(int used)

Set the maximum number of stack entries used by this method

localsUsed

public int localsUsed()

Return the maximum number of local variables used by this method

setLocalsUsed

public void setLocalsUsed(int used)

Set the maximum number of local variables used by this method

byteCodes

public byte[] byteCodes()

Return the java VM byte code sequence for this method - null for native and abstract methods

theCode

public Insn theCode()

Return the instruction sequence for this method - initially derived from the byte code array, but may later be modified

setTheCode

public void setTheCode(Insn insn)

Install the instruction sequence for this method - the byte code array is later updated.

exceptionHandlers

public ExceptionTable exceptionHandlers()

Return the exception ranges and handlers which apply to the code in this method.

attributes

public AttributeVector attributes()

Return the attributes which apply to this code