Pothos::Util::EvalEnvironment Class Reference

#include <EvalEnvironment.hpp>

Public Member Functions
	EvalEnvironment (void)
Pothos::Object	eval (const std::string &expression)
void	registerConstantExpr (const std::string &key, const std::string &expr)
void	registerConstantObj (const std::string &key, const Pothos::Object &obj)
void	unregisterConstant (const std::string &key)

Static Public Member Functions
static std::shared_ptr< EvalEnvironment >	make (void)

Detailed Description

The evaluation environment can evaluate and inspect expressions. Expressions are considered to be valid C++ expressions involving bools, integers, strings, floats, stl classes...

Constructor & Destructor Documentation

Pothos::Util::EvalEnvironment::EvalEnvironment

(

void

)

Create an empty eval environment. The environment can evaluate expressions with eval() and can be extended with new constants using the registerConstant calls.

Member Function Documentation

Pothos::Object Pothos::Util::EvalEnvironment::eval

(

const std::string &

expression

)

Try to evaluate an expression in this environment.

Parameters

expression

a string expression

Exceptions

Pothos::Exception

with the evaluation error message

Returns

a proxy object representing the evaluated expression

static std::shared_ptr<EvalEnvironment> Pothos::Util::EvalEnvironment::make ( void  )

static

Create a new empty eval environment in a shared ptr. This is a convenience factory for EvalEnvironment.

void Pothos::Util::EvalEnvironment::registerConstantExpr	(	const std::string &	key,
		const std::string &	expr
	)

Register a constant that will be used in other expressions. For an expression like 2*x, then "x" would be a constant.

void Pothos::Util::EvalEnvironment::registerConstantObj	(	const std::string &	key,
		const Pothos::Object &	obj
	)

Register a constant that will be used in other expressions.

void Pothos::Util::EvalEnvironment::unregisterConstant

(

const std::string &

key

)

Unregister a previously registered constant.

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

• include/Pothos/Util/EvalEnvironment.hpp