base::Expression Class Reference

Inheritance diagram for base::Expression:

[legend]Collaboration diagram for base::Expression:

[legend]List of all members.


Public Member Functions
	Expression ()
	Expression (Real constant)
	Expression (const Expression &e)
	Expression (const String &exprString)
	construct from string - e.g. '2.3cos(p[0])+p[2]/(4p[1])'
virtual String	className () const
Real	evaluate (const Vector &params) const
Expression	differentiate (Expression withRespectTo) const
void	simplify ()
	simplify the expression (constant sub-expression evaluation, common sub-expression elimination etc.)
void	operationCounts (Int &addsub, Int &multdiv, Int &trig) const
	calculate operation counts for evaluating the expression (added to args)
String	toString () const
Expression &	operator= (const Expression &e)
Expression &	operator+= (const Expression &e)
Expression &	operator-= (const Expression &e)
Expression &	operator *= (const Expression &e)
Expression &	operator/= (const Expression &e)
Expression &	negate ()
Expression &	sin ()
Expression &	cos ()
virtual void	serialize (Serializer &s)
	read or write object state to Serializer
virtual bool	isSameKindAs (const Object &) const
Static Public Member Functions
template<class BaseClass, class DerivedClass> void	registerSerializableInstantiator (const SerializableInstantiator &instantiator)
void	registerSerializableInstantiator (const String &baseClassTypeName, const String &derivedClassTypeName, const SerializableInstantiator &instantiator)
template<class BaseClass> const SerializableInstantiator &	getSerializableInstantiator (const String &derivedClassTypeName)
const SerializableInstantiator &	getSerializableInstantiator (const String &baseClassTypeName, const String &derivedClassTypeName)
Static Public Attributes
VariableIndexer	p
	p[i] is an Expression that evaluates to the variable params[i]
Protected Member Functions
	Expression (ref< ExpressionNode > expr)
ref< ExpressionNode >	simplifyConstantExpressions (ref< ExpressionNode > expr)
	evaluate and replace constant expression subtrees with a single ConstantExpression
Static Protected Member Functions
bool	peek (const String &s, Int pos, String next)
bool	peek (const String &s, Int pos, String::value_type c)
SInt	index (const String &s, Int &pos)
Real	real (const String &s, Int &pos)
Expression	expression (const String &s, Int &pos)
Expression	term (const String &s, Int &pos)
Expression	prod (const String &s, Int &pos)
Protected Attributes
ref< ExpressionNode >	expr
	root of ExpressionNode tree
Serializable::SerializableDerivedInstantiator< SumExpression >	sumInstantiator
Serializable::SerializableDerivedInstantiator< DifferenceExpression >	differenceInstantiator
Serializable::SerializableDerivedInstantiator< ProductExpression >	productInstantiator
Serializable::SerializableDerivedInstantiator< QuotientExpression >	quotientInstantiator
Serializable::SerializableDerivedInstantiator< NegateExpression >	negateInstantiator
Serializable::SerializableDerivedInstantiator< SinExpression >	sinInstantiator
Serializable::SerializableDerivedInstantiator< CosExpression >	cosInstantiator
Serializable::SerializableDerivedInstantiator< ConstantExpression >	constantInstantiator
Serializable::SerializableDerivedInstantiator< VariableExpression >	variableInstantiator
Friends
class	VariableIndexer
void	base::setIdentity (ExpressionMatrix &A)

Constructor & Destructor Documentation

base::Expression::Expression ( )

base::Expression::Expression ( Real constant )

base::Expression::Expression ( const Expression & e )

base::Expression::Expression ( const String & exprString )

construct from string - e.g. '2.3*cos(p[0])+p[2]/(4*p[1])'

base::Expression::Expression ( ref< ExpressionNode > expr ) [inline, protected]

Definition at line 108 of file Expression.

Member Function Documentation

virtual String base::Expression::className ( ) const [inline, virtual]

return the name of the object's class type. Must be defined by derived classes.
Implements base::Object.
Definition at line 82 of file Expression.
References base::String.

Expression& base::Expression::cos ( )

Referenced by base::cos().

Expression base::Expression::differentiate ( Expression withRespectTo ) const

Real base::Expression::evaluate ( const Vector & params ) const

Referenced by base::ParametricTrajectoryRep::eval().

Expression base::Expression::expression ( const String & s,

Int & pos

) [static, protected]

const SerializableInstantiator& base::Serializable::getSerializableInstantiator ( const String & baseClassTypeName,

const String & derivedClassTypeName

) [static, inherited]

template<class BaseClass>

const SerializableInstantiator& base::Serializable::getSerializableInstantiator ( const String & derivedClassTypeName ) [inline, static, inherited]

Definition at line 71 of file Serializable.
References base::String.

SInt base::Expression::index ( const String & s,

Int & pos

) [static, protected]

virtual bool base::Object::isSameKindAs ( const Object & ) const [inline, virtual, inherited]

Definition at line 47 of file Object.

Expression& base::Expression::negate ( )

Referenced by base::operator-().

void base::Expression::operationCounts ( Int & addsub,

Int & multdiv,

Int & trig

) const

calculate operation counts for evaluating the expression (added to args)

Expression& base::Expression::operator *= ( const Expression & e )

Expression& base::Expression::operator+= ( const Expression & e )

Expression& base::Expression::operator-= ( const Expression & e )

Expression& base::Expression::operator/= ( const Expression & e )

Expression& base::Expression::operator= ( const Expression & e ) [inline]

Definition at line 96 of file Expression.
References expr.

bool base::Expression::peek ( const String & s,

Int pos,

String::value_type c

) [inline, static, protected]

Definition at line 118 of file Expression.
References base::Int, and base::String.

bool base::Expression::peek ( const String & s,

Int pos,

String next

) [static, protected]

Expression base::Expression::prod ( const String & s,

Int & pos

) [static, protected]

Real base::Expression::real ( const String & s,

Int & pos

) [static, protected]

void base::Serializable::registerSerializableInstantiator ( const String & baseClassTypeName,

const String & derivedClassTypeName,

const SerializableInstantiator & instantiator

) [static, inherited]

template<class BaseClass, class DerivedClass>

void base::Serializable::registerSerializableInstantiator ( const SerializableInstantiator & instantiator ) [inline, static, inherited]

Definition at line 62 of file Serializable.

virtual void base::Expression::serialize ( Serializer & s ) [virtual]

read or write object state to Serializer

Implements base::Serializable.

void base::Expression::simplify ( )

simplify the expression (constant sub-expression evaluation, common sub-expression elimination etc.)

ref<ExpressionNode> base::Expression::simplifyConstantExpressions ( ref< ExpressionNode > expr ) [protected]

evaluate and replace constant expression subtrees with a single ConstantExpression

Expression& base::Expression::sin ( )

Referenced by base::sin().

Expression base::Expression::term ( const String & s,

Int & pos

) [static, protected]

String base::Expression::toString ( ) const

Referenced by base::operator<<().

Friends And Related Function Documentation

void base::setIdentity ( ExpressionMatrix & A ) [friend]

friend class VariableIndexer [friend]

Definition at line 74 of file Expression.

Member Data Documentation

Serializable::SerializableDerivedInstantiator<ConstantExpression> base::Expression::constantInstantiator [protected]

Definition at line 136 of file Expression.

Serializable::SerializableDerivedInstantiator<CosExpression> base::Expression::cosInstantiator [protected]

Definition at line 135 of file Expression.

Serializable::SerializableDerivedInstantiator<DifferenceExpression> base::Expression::differenceInstantiator [protected]

Definition at line 130 of file Expression.

ref<ExpressionNode> base::Expression::expr [protected]

root of ExpressionNode tree

Definition at line 111 of file Expression.
Referenced by operator=().

Serializable::SerializableDerivedInstantiator<NegateExpression> base::Expression::negateInstantiator [protected]

Definition at line 133 of file Expression.

VariableIndexer base::Expression::p [static]

p[i] is an Expression that evaluates to the variable params[i]

Definition at line 94 of file Expression.