at.dms.kjc
Class CNullType

java.lang.Object
  |
  +--at.dms.util.Utils
        |
        +--at.dms.kjc.CType
              |
              +--at.dms.kjc.CClassType
                    |
                    +--at.dms.kjc.CNullType
All Implemented Interfaces:
Constants, Constants

public class CNullType
extends CClassType

This class represents null class type in the type structure.


Fields inherited from class at.dms.kjc.CClassType
EMPTY
 
Fields inherited from class at.dms.kjc.CType
signatureParser, type
 
Fields inherited from class at.dms.util.Utils
DBG_LEVEL_HIGH, DBG_LEVEL_LOW, DBG_LEVEL_NO
 
Fields inherited from interface at.dms.kjc.Constants
CMP_VERSION, JAV_CLASS, JAV_CLONE, JAV_CLONEABLE, JAV_CONSTRUCTOR, JAV_ERROR, JAV_EXCEPTION, JAV_INIT, JAV_LENGTH, JAV_NAME_SEPARATOR, JAV_OBJECT, JAV_OUTER_THIS, JAV_RUNTIME, JAV_RUNTIME_EXCEPTION, JAV_STATIC_INIT, JAV_STRING, JAV_STRINGBUFFER, JAV_THIS, JAV_THROWABLE, OPE_BAND, OPE_BNOT, OPE_BOR, OPE_BSR, OPE_BXOR, OPE_EQ, OPE_GE, OPE_GT, OPE_LE, OPE_LNOT, OPE_LT, OPE_MINUS, OPE_NE, OPE_PERCENT, OPE_PLUS, OPE_POSTDEC, OPE_POSTINC, OPE_PREDEC, OPE_PREINC, OPE_SIMPLE, OPE_SL, OPE_SLASH, OPE_SR, OPE_STAR, TID_ARRAY, TID_BOOLEAN, TID_BYTE, TID_CHAR, TID_CLASS, TID_DOUBLE, TID_FLOAT, TID_INT, TID_LONG, TID_SHORT, TID_VOID
 
Fields inherited from interface at.dms.classfile.Constants
ACC_ABSTRACT, ACC_FINAL, ACC_INTERFACE, ACC_NATIVE, ACC_NBR_FLAGS, ACC_PRIVATE, ACC_PROTECTED, ACC_PUBLIC, ACC_STATIC, ACC_STRICT, ACC_SUPER, ACC_SYNCHRONIZED, ACC_TRANSIENT, ACC_VOLATILE, ATT_CODE, ATT_CONSTANTVALUE, ATT_DEPRECATED, ATT_EXCEPTIONS, ATT_GENERIC, ATT_INNERCLASSES, ATT_LINENUMBERTABLE, ATT_LOCALVARIABLETABLE, ATT_SOURCEFILE, ATT_SYNTHETIC, 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_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, 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
CNullType()
          Construct a null class type.
 
Method Summary
 CClass getCClass()
          Returns the CClass for java.lang.Object.
protected  CClass getObject()
          Returns the CClass for java.lang.Object.
 int getSize()
          Returns the size used in stack by value of this type.
 boolean implicitlyCastTo(CType dest)
          implicitlyCastTo.
 boolean isAssignableTo(CType dest)
          isAssignableTo.
 boolean isCastableTo(CType dest)
          isCastableTo.
 java.lang.String toString()
          Transforms this type to a string.
 
Methods inherited from class at.dms.kjc.CClassType
appendSignature, checkType, equals, getIdent, getQualifiedName, isChecked, isCheckedException, isClassType, isReference, lookup, lookup, setClass, setClassFromName
 
Methods inherited from class at.dms.kjc.CType
checked, genMethodSignature, getLoadOpcode, getReturnOpcode, getSignature, getStoreOpcode, getTypeID, isArrayType, isCodedHasInt, isFloatingPoint, isNumeric, isOrdinal, isPrimitive, parseMethodSignature, parseSignature
 
Methods inherited from class at.dms.util.Utils
assert, assert, fail, fail, hasFlag, hasMoreThanOneFlag, hasOtherFlags, splitQualifiedName, splitQualifiedName, vectorToArray, vectorToIntArray
 
Methods inherited from class java.lang.Object
, clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Constructor Detail

CNullType

public CNullType()
Construct a null class type.
Method Detail

isAssignableTo

public boolean isAssignableTo(CType dest)
isAssignableTo.
Overrides:
isAssignableTo in class CClassType
Parameters:
dest - The destination type.
Returns:
Assignment is valid?

isCastableTo

public boolean isCastableTo(CType dest)
isCastableTo.
Overrides:
isCastableTo in class CClassType
Parameters:
dest - The destination type.
Returns:
Cast is valid?

implicitlyCastTo

public boolean implicitlyCastTo(CType dest)
implicitlyCastTo.
Overrides:
implicitlyCastTo in class CClassType
Parameters:
dest - The expression type to cast to.
Returns:
Cast is valid?

getObject

protected CClass getObject()
Returns the CClass for java.lang.Object.

getCClass

public CClass getCClass()
Returns the CClass for java.lang.Object.
Overrides:
getCClass in class CClassType
Returns:
The CClass for java.lang.Object.

toString

public java.lang.String toString()
Transforms this type to a string.
Overrides:
toString in class CClassType

getSize

public int getSize()
Returns the size used in stack by value of this type.
Overrides:
getSize in class CClassType