SchExpressionLambda Class Reference

#include <schfun.hpp>

Inheritance diagram for SchExpressionLambda:

[legend]Collaboration diagram for SchExpressionLambda:

[legend]List of all members.

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Detailed Description

A Scheme closure (that is, a function written in Scheme).

Definition at line 35 of file schfun.hpp.

Public Member Functions
	SchExpressionLambda (const SchContextRef &a_cont, const SReference &lambda, const SReference &body)
	The constructor.
virtual void	DoApply (int paramc, const SReference *paramv, IntelibContinuation &cont) const
	Perform application to the given parameters.
SReference &	GetBody ()
	Get the body.
virtual SString	TextRepresentation () const
	Text representation of the S-expression.
void	Apply (int paramc, const SReference *paramv, IntelibContinuation &cont) 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.
virtual bool	SpecificEql (const SExpression *) const
	Are the two objects EQL (while not EQ).
Static Public Attributes
static IntelibTypeId	TypeId
	The type identifier.
Protected Member Functions
virtual	~SchExpressionLambda ()
bool	CanDie ()
	Is it OK to delete the object now?
Protected Attributes
int	min_param
int	max_param

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Constructor & Destructor Documentation

SchExpressionLambda::SchExpressionLambda (  const SchContextRef &  a_cont, const SReference &  lambda, const SReference &  body )

The constructor. Parameters: a_cont  is the lexical context within which the closure is created lambda  is the list of symbols to be used as formal parameters body  is the list of forms that is to be used as the function's body Definition at line 23 of file schfun.cpp.

SchExpressionLambda::~SchExpressionLambda (   )  [protected, virtual]

Definition at line 32 of file schfun.cpp.

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Member Function Documentation

void SchExpressionLambda::DoApply (  int  paramc, const SReference *  paramv, IntelibContinuation &  cont )  const [virtual]

Perform application to the given parameters. This method actually does all the job; however, you'd better use the SExpressionFunction::Apply() method as it is more general. Furthermore, you generally won't need to do even so; better construct the appropriate form and LReference::Evaluate() it. This is because the application is actually only scheduled to be done within the given continuation, and you'll need yourself to make the continuation run to get the result of the application. Implements SExpressionFunction. Definition at line 37 of file schfun.cpp. References PTheEmptyList.

SReference& SchExpressionLambda::GetBody (   )

Get the body. Definition at line 74 of file schfun.hpp.

SString SchExpressionLambda::TextRepresentation (   )  const [virtual]

Text representation of the S-expression. Returns the text string which represents the given S-expression as for real Lisp (for example, (25 36 49)) Implements SExpression. Definition at line 92 of file schfun.cpp.

void SExpressionFunction::Apply (  int  paramc, const SReference *  paramv, IntelibContinuation &  cont )  const [inherited]

Definition at line 24 of file lispform.cpp. References SExpressionFunction::DoApply(), SExpressionFunction::max_param, and SExpressionFunction::min_param.

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.

virtual bool SExpression::SpecificEql (  const SExpression *   )  const [virtual, inherited]

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 in SExpressionInt, SExpressionFloat, SExpressionChar, and SExpressionString. Definition at line 235 of file sexpress.hpp. Referenced by SchReference::IsEql(), and LReference::IsEql().

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 SchExpressionLambda::TypeId [static]

The type identifier. Reimplemented from SExpressionFunction.

int SExpressionFunction::min_param [protected, inherited]

Definition at line 41 of file lispform.hpp. Referenced by SExpressionFunction::Apply(), and SExpressionFunction::SExpressionFunction().

int SExpressionFunction::max_param [protected, inherited]

Definition at line 41 of file lispform.hpp. Referenced by SExpressionFunction::Apply(), and SExpressionFunction::SExpressionFunction().

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

• schfun.hpp
• schfun.cpp

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