coins.sym
Interface Const

All Superinterfaces:

Sym, Sym0

All Known Subinterfaces:

BoolConst, CharConst, FloatConst, IntConst, NamedConst, StringConst

All Known Implementing Classes:

BoolConstImpl, CharConstImpl, ConstImpl, FloatConstImpl, IntConstImpl, NamedConstImpl, StringConstImpl

public interface Const

extends Sym

Const interface

  Const (constant) class interface.
  A constant in source program is recorded as a Const instance
  by using its character string representation as its name.
  There are access methods to get the value of constants and
  to record a constant giving its value.
  Constants are usually represented by symbol table instance
  in order to represent attributes attached to them.
  Subclasses of Const is not so fine as type, foe example,
  int, short, long, unsigned int, unsigned short, unsigned long
  all belongs to IntConst. To see the type of Const object,
  use getSymType() of SymInterface.

Field Summary

Fields inherited from interface coins.sym.Sym

KIND_NAME, VISIBILITY

Fields inherited from interface coins.sym.Sym0

FLAG_ADDRESS_TAKEN, FLAG_CASTLESS_SUBP, FLAG_COMMON, FLAG_COMPLEX_STRUCT, FLAG_DERIVED_SYM, FLAG_GENERATED_SYM, FLAG_INCOMPLETE_TYPE, FLAG_POINTER_OPERATION, FLAG_REGION_ELEM, FLAG_RESERVED_NAME, FLAG_SIZEOF_TAKEN, FLAG_UNFIXED_SIZE, FLAG_UNIFORM_SIZE, FLAG_VALUE_IS_ASSIGNED, KIND_AREG, KIND_BOOL_CONST, KIND_CHAR_CONST, KIND_CONST_FIRST, KIND_CONST_LAST, KIND_ELEM, KIND_EXP_ID, KIND_FLOAT_CONST, KIND_INT_CONST, KIND_LABEL, KIND_MREG, KIND_NAMED_CONST, KIND_OTHER, KIND_PARAM, KIND_REMOVED, KIND_STRING_CONST, KIND_SUBP, KIND_TAG, KIND_TYPE, KIND_VAR, SYM_COMPILE_UNIT, SYM_EXTERN, SYM_PRIVATE, SYM_PROTECTED, SYM_PUBLIC

Method Summary

char	charValue() charValue
double	doubleValue() doubleValue
java.lang.Object	evaluateAsObject() Get the value of this constant symbol.
float	floatValue() floatValue
Const	getConstSym() getConstSym
int	intValue() intValue Get the value of this constant.
long	longValue() longValue
short	shortValue() shortValue

Methods inherited from interface coins.sym.Sym

baseType, boolConst, charConst, defineVar, derivedSym, floatConst, getDefinedColumn, getDefinedInName, getDefinedLine, getInf, getNameOrNull, getOrAddInf, getOriginalSym, getOriginalSym, getPureName, getSymKindName, getWork, intConst, intObject, isRemoved, makeCstring, makeCstringWithTrailing0, makeEnumTypeName, makeJavaString, makeStructUnionTypeName, makeSubpTypeName, makeVectorTypeName, makeVectorTypeName, makeVectorTypeName, namedConst, pointerType, pointerType, pointerType, regionType, remove, setDefinedFile, setDefinedIn, setDefinedLine, setRecordedIn, setSymKind, setSymType, setUniqueNameSym, setWork, stringConstFromQuotedString, symbol, toStringDetail, toStringShort, vectorType, vectorType, vectorType, vectorTypeUnfixed

Methods inherited from interface coins.sym.Sym0

charConst, definedType, defineElem, defineLabel, defineParam, defineSubp, defineVar, enumType, floatConst, getDefinedFile, getDefinedIn, getFlag, getName, getNextSym, getRecordedIn, getSymKind, getSymType, getUniqueName, intConst, isGlobal, namedConst, pointerType, setFlag, stringConst, structType, subpType, unionType, vectorType, vectorTypeUnfixed

Method Detail

intValue

public int intValue()

intValue Get the value of this constant. If type conversion is required, the returned value is the result of conversion. "this" should be a constant of type integer, short integer, long integer, or character of either signed or unsigned.

Returns:

the integer value of this constant.

shortValue

public short shortValue()

shortValue

  Get the value of this constant.
  If type conversion is required, the returned value is the
  result of conversion.
  "this" should be a constant of type integer, short integer,
  long integer, or character of either signed or unsigned.

Returns:

the short int value of this constant.

longValue

public long longValue()

longValue

  Get the value of this constant.
  If type conversion is required, the returned value is the
  result of conversion.
  "this" should be a constant of type integer, short integer,
  long integer, or character of either signed or unsigned.

Returns:

the long int value of this constant.

charValue

public char charValue()

charValue

  Get the value of this constant.
  If type conversion is required, the returned value is the
  result of conversion.
  "this" should be a constant of type integer, short integer,
  long integer, or character of either signed or unsigned.

Returns:

the char value of this constant.

floatValue

public float floatValue()

floatValue

  Get floating value of this constant.
  If type conversion is required, the returned value is the
  result of conversion.
  "this" should be a constant of type float, or double.

Returns:

the float value of this constant.

doubleValue

public double doubleValue()

doubleValue

  Get double value of this constant.
  If type conversion is required, the returned value is the
  result of conversion.
  "this" should be a constant of type float, or double.

Returns:

the double value of this constant.

getConstSym

public Const getConstSym()

getConstSym

  If      boolean true  then return symRoot.intConst1
  else if boolean false then return symRoot.intConst0
  else if enumeration constant then return corresponding IntConst
  else return this.

evaluateAsObject

public java.lang.Object evaluateAsObject()

 Get the value of this constant symbol.
 This method is overrided as follows:
 class       returned value
 IntConst     Long
 FloatConst   Double
 StringConst  String
 Var          Initail value (ExpListExp, etc.) if qualified by const,
              else null.

Returns:

the constant value of appropriate type.