Expression Evaluation¶

API: Expression Evaluation

API

Classes
class	cDynamicExpression
	A stack-based expression evaluator class, for dynamically created expressions. More...
class	cOwnedDynamicExpression
	An "owned" version cDynamicExpression to allow it to be assigned to module parameters of the type "object". More...
class	cExpression
	Abstract base class for expression evaluators. More...
class	cMatchExpression
	Decides whether an object matches an expression. More...
class	cMatchExpression::Matchable
	Objects to be matched must implement this interface. More...
class	cMatchableString
	Wrapper to make a string matchable with cMatchExpression. More...
class	cValue
	A variant-like value class used during evaluating NED expressions. More...
class	cValueArray
	Container class based on std::vector<cValue> objects. More...
class	cValueContainer
	Common base class for cValue-based containers. More...
class	cValueHolder
	cOwnedObject-based container/wrapper to hold a single cValue. More...
class	cValueMap
	Key-value container class based on std::map<std::string,cValue>. More...
class	cXMLElement
	Represents an XML element in an XML configuration file. More...

Description

Classes related to evaluating generic/arithmetic expressions and match expressions.

cExpression encapsulates an expression that can be evaluated. This is an abstract base class.
cDynamicExpression subclasses cExpression, and implements an expression parsed at runtime
cMatchExpression allows matching objects against a filter expression
cValue is a variant-style value class for representing intermediate results during expression evaluation
cValueMap, cValueArray, cValueHolder are container classes that represent elements in a JSON-style data structure that certain expressions may produce as result
cXmlElement represents an XML element