TypedExpression< EString > Class Template Reference

#include <Expression.h>

Inherits Expression.

Inherited by ConstantExpression< EString >, FieldExpression< EString >, and PadFunction::Impl.

List of all members.

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Detailed Description

template<>
class TypedExpression< EString >

An expression that evaluates to a string value.

Expressions returning a string should derive from this class and implement the evalImpl(EvalAs<EString>) method.

Public Member Functions
virtual EString	evalImpl (EvalAs< EString >, const EvalContext &ctxt)=0 throw ( EvalException )
	Evaluate as a string.
bool	isImpl (EvalAs< EString >) const
	Returns true iff the expression can be evaluated as an EString.
	TypedExpression ()

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Member Function Documentation

virtual EString TypedExpression< EString >::evalImpl (  EvalAs< EString >  , const EvalContext &  ctxt )  throw ( EvalException ) [pure virtual]

Evaluate as a string. Reimplemented from Expression. Implemented in ConstantExpression< EString >, FieldExpression< EString >, and PadFunction::Impl.

bool TypedExpression< EString >::isImpl (  EvalAs< EString >   )  const [virtual]

Returns true iff the expression can be evaluated as an EString. Reimplemented from Expression.

TypedExpression< EString >::TypedExpression (   )

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

• Expression.h

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