SExpressionChar Class Reference

#include <sexpress.hpp>

Inheritance diagram for SExpressionChar:

[legend]Collaboration diagram for SExpressionChar:

[legend]List of all members.

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Detailed Description

Character constant.

The class represents a single character, such as #\a or #\Newline

Warning:

Normally, you never need to create objects of this class, as there are already an internal vector containing objects for all 256 possible chars.

Definition at line 322 of file sexpress.hpp.

Public Member Functions
	SExpressionChar (int c)
char	GetValue () const
const char *	GetString () const
virtual SString	TextRepresentation () const
const IntelibTypeId &	TermType () const
	Actual S-expression type.
bool	IsChangeable () const
	Can it be changed during the lifetime of the object?
virtual SExpression *	Clone () const
	Clone a changeable object.
Static Public Attributes
static IntelibTypeId	TypeId
	Identifier for the set of all possible S-expressions.
Protected Member Functions
	~SExpressionChar ()
virtual bool	SpecificEql (const SExpression *other) const
	Are the two objects EQL (while not EQ).
bool	CanDie ()
	Is it OK to delete the object now?

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Constructor & Destructor Documentation

SExpressionChar::SExpressionChar (  int  c  )

Definition at line 327 of file sexpress.hpp. References TypeId.

SExpressionChar::~SExpressionChar (   )  [protected]

Definition at line 330 of file sexpress.hpp.

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Member Function Documentation

virtual bool SExpressionChar::SpecificEql (  const SExpression *  other  )  const [protected, virtual]

Are the two objects EQL (while not EQ). This function is overriden by those SExpressions able to be EQL while being not EQ. Warning: It is not demanded that this function return true if it's arguments are the same SExpression (that is, they're EQ). It is only called by the EQL predicate implementation when it has been checked that the operands are not the same object. Reimplemented from SExpression.

char SExpressionChar::GetValue (   )  const

Definition at line 334 of file sexpress.hpp.

const char* SExpressionChar::GetString (   )  const

Definition at line 335 of file sexpress.hpp.

virtual SString SExpressionChar::TextRepresentation (   )  const [virtual]

The representation includes double quotes. All special characters are converted to standard C string escapes Implements SExpression.

const IntelibTypeId& SExpression::TermType (   )  const [inherited]

Actual S-expression type. Definition at line 195 of file sexpress.hpp. Referenced by SReference::DynamicCastGetPtr(), SchReference::IsEql(), LReference::IsEql(), SReference::SimpleCastGetPtr(), SchReference::TextRepresentation(), and LReference::TextRepresentation().

bool SExpression::IsChangeable (   )  const [inherited]

Can it be changed during the lifetime of the object? Definition at line 198 of file sexpress.hpp. References IntelibTypeId::IsChangeable().

virtual SExpression* SExpression::Clone (   )  const [virtual, inherited]

Clone a changeable object. The method should return the pointer created with new Note: It can (and should) return null pointer for non-changeables Warning: This method will hang your program being called for a looped data structure, including looped lists, a hash table which references a list in which it is a member, etc. If you create a changeable S-expression, you MUST make sure this method duplicates your object in such a way that nothing is shared between the old and new objects, that is, changing the new object can not in any way change the old object. Reimplemented in SExpressionBacklink, SExpressionCons, SExpressionHashTable, SExpressionRawBuffer, and SExpressionVector. Definition at line 214 of file sexpress.hpp.

bool GarbageSafe::CanDie (   )  [protected, inherited]

Is it OK to delete the object now? Our children have no access to the private attribute RefCount and should never need it except when checking if the destruction is not an error. This solves the problem. Definition at line 53 of file refcount.hpp.

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Member Data Documentation

IntelibTypeId SExpressionChar::TypeId [static]

Identifier for the set of all possible S-expressions. Note: It never can be the value of term_type_id because SExpression is an abstract class. SExpression::TypeId is used for unification, to identify the whole world of S-expressions. IntelibTypeId::IsSubtypeOf(SExpression::TypeId) is true for all objects of IntelibTypeId class. Guess why. Reimplemented from SExpression. Referenced by SExpressionChar().

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The documentation for this class was generated from the following files:

• sexpress.hpp
• sexpress.cpp

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