org.multijava.util.classfile
Class PooledConstant

java.lang.Object
  org.multijava.util.classfile.PooledConstant

All Implemented Interfaces:

Constants

Direct Known Subclasses:

AsciiConstant, ClassConstant, DoubleConstant, FloatConstant, IntegerConstant, LongConstant, NameAndTypeConstant, ReferenceConstant, StringConstant, UnresolvedConstant

public abstract class PooledConstant

extends java.lang.Object

implements Constants

this is an abstraction to contain all the constant items that can be created.

Field Summary
private  short	index           An index to this constants position in the constant pool.
private  boolean	isIndexSet           Flag indicates whether the index field has been explicitly set.

 

Fields inherited from interface org.multijava.util.classfile.Constants

ACC_ABSTRACT, ACC_FINAL, ACC_INTERFACE, ACC_NATIVE, ACC_PRIVATE, ACC_PROTECTED, ACC_PUBLIC, ACC_STATIC, ACC_STRICT, ACC_SUPER, ACC_SYNCHRONIZED, ACC_TRANSIENT, ACC_VOLATILE, ACCESS_FLAG_ARRAY, ACCESS_FLAG_NAMES, ATT_ANCHOR, ATT_BRIDGE, ATT_CODE, ATT_CONSTANTVALUE, ATT_DEPRECATED, ATT_DISPATCHER, ATT_EXCEPTIONS, ATT_GENERIC, ATT_GENERIC_FUNCTIONS, ATT_INNERCLASSES, ATT_LINENUMBERTABLE, ATT_LOCALVARIABLETABLE, ATT_MM_BODY, ATT_REDIRECTOR, ATT_RMJ_GLUE, ATT_RMJ_SIGNATURE, ATT_RUNTIME_VISIBLE_ANNOTATIONS, ATT_RUNTIME_VISIBLE_PARAMETER_ANNOTATIONS, ATT_SIGNATURE, ATT_SOURCEFILE, ATT_SYNTHETIC, ATT_UNIVERSE_FIELD, ATT_UNIVERSE_METHOD, ATT_UNIVERSE_VERSION, CST_CLASS, CST_DOUBLE, CST_FIELD, CST_FLOAT, CST_INTEGER, CST_INTERFACEMETHOD, CST_LONG, CST_METHOD, CST_NAMEANDTYPE, CST_STRING, CST_UTF8, ENV_DEBUG_MODE, ENV_USE_CACHE, JAVA_MAGIC, JAVA_MAJOR, JAVA_MINOR, MAX_CODE_PER_METHOD, 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_dup2, opc_dup2_x1, opc_dup2_x2, opc_dup_x1, opc_dup_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_ldc2_w, opc_ldc_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, POO_ASCII_CONSTANT, POO_CLASS_CONSTANT, POO_DOUBLE_CONSTANT, POO_FLOAT_CONSTANT, POO_INTEGER_CONSTANT, POO_LONG_CONSTANT, POO_NAT_CONSTANT, POO_REF_CONSTANT, POO_STRING_CONSTANT, TYP_ADDRESS, TYP_DOUBLE, TYP_FLOAT, TYP_INT, TYP_LONG, TYP_REFERENCE, TYP_VOID

 

Constructor Summary

PooledConstant()           Constructs a new pooled constant.

 

Method Summary
abstract  boolean	equals(java.lang.Object o)           equals (an exact comparison) ASSERT: this.hashCode == o.hashCode ===> cast
short	getIndex()
(package private) abstract  java.lang.Object	getLiteral()           Returns the associated literal
(package private)  int	getSlotsUsed()           Returns the number of slots in the constant pool used by this entry This number is normally 1.
abstract  int	hashCode()           hashCode (a fast comparison) CONVENTION: return XXXXXXXXXXXX << 4 + Y with Y = ident of the type of the pooled constant
(package private) abstract  void	resolveConstants(ConstantPool cp)           Insert or check location of constant value on constant pool
(package private) abstract  void	resolveConstants(PooledConstant pc)           Check location of constant value on constant pool
void	setIndex(short index)
java.lang.String	toString()
(package private) abstract  void	write(ConstantPool cp, java.io.DataOutput out)           Write this class into the the file (out) getting data position from the constant pool

 

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

 

Field Detail

isIndexSet

private boolean isIndexSet

Flag indicates whether the index field has been explicitly set.

index

private short index

An index to this constants position in the constant pool. Note that this field is not always set.

See Also:

isIndexSet

PooledConstant

public PooledConstant()

Constructs a new pooled constant.

getSlotsUsed

int getSlotsUsed()

Returns the number of slots in the constant pool used by this entry This number is normally 1. Constants which use more than one slot should override this method.

getLiteral

abstract java.lang.Object getLiteral()

Returns the associated literal

hashCode

public abstract int hashCode()

hashCode (a fast comparison) CONVENTION: return XXXXXXXXXXXX << 4 + Y with Y = ident of the type of the pooled constant

Overrides:

hashCode in class java.lang.Object

equals

public abstract boolean equals(java.lang.Object o)

equals (an exact comparison) ASSERT: this.hashCode == o.hashCode ===> cast

Overrides:

equals in class java.lang.Object

getIndex

public final short getIndex()

setIndex

public final void setIndex(short index)

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

resolveConstants

abstract void resolveConstants(ConstantPool cp)

Insert or check location of constant value on constant pool

Parameters:

cp - the constant pool for this class

resolveConstants

abstract void resolveConstants(PooledConstant pc)

Check location of constant value on constant pool

Parameters:

pc - the already in pooled constant

write

abstract void write(ConstantPool cp,
                    java.io.DataOutput out)
             throws java.io.IOException

Write this class into the the file (out) getting data position from the constant pool

Parameters:

cp - the constant pool that contain all data

out - the file where to write this object info

Throws:

java.io.IOException - an io problem has occured