crp::Executable Class Reference

Class Executable composes an expression, an engine and an evaluation scope. More...

#include <engine.h>

Public Member Functions
	Executable ()
	Empty constructor defines an invalid command.
	Executable (const DPtr &expression, const SPtr< Scope > &scope, Engine *engine)
	Creates a new command from components.
	Executable (const Executable &executable)
	Copy constructor.
	~Executable ()
void	operator= (const Executable &executable)
	Assignment operator.
bool	is_valid () const
	Returns true if the command is valid.
DPtr	evaluate () const
	Evaluates the expression.
DPtr	call (const SPtr< List > &arguments, std::map< std::string, DPtr > &options=Interpreter::empty_options) const
	Calls the expression if the expression is a function.
void	assign (const std::string &name, const DPtr &value)
	Assigns a value within the command scope.
Data Fields
DPtr	expression
	Expression to evaluate.
SPtr< Scope >	scope
	Evaluation scope.
Engine *	engine
	Engine.

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Detailed Description

Class Executable composes an expression, an engine and an evaluation scope.

Instances of the Executable class can be evaluated on their own, since they comprise all necessary information.

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Constructor & Destructor Documentation

crp::Executable::Executable

(

)

[inline]

Empty constructor defines an invalid command.

crp::Executable::Executable	(	const DPtr &	expression,
		const SPtr< Scope > &	scope,
		Engine *	engine
	)		[inline]

Creates a new command from components.

Parameters:

expression	Expression to evaluate
scope	Evaluation scope
engine	Evaluating engine

crp::Executable::Executable

(

const Executable &

executable

)

[inline]

Copy constructor.

Parameters:

executable

Different expression

crp::Executable::~Executable

(

)

[inline]

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Member Function Documentation

void crp::Executable::assign	(	const std::string &	name,
		const DPtr &	value
	)

Assigns a value within the command scope.

If no value is declared the value is declared locally.

Parameters:

name	Name to declare
value	Value to declare

DPtr crp::Executable::call	(	const SPtr< List > &	arguments,
		std::map< std::string, DPtr > &	options = Interpreter::empty_options
	)		const [inline]

Calls the expression if the expression is a function.

Parameters:

arguments

List of arguments

DPtr crp::Executable::evaluate

(

)

const [inline]

Evaluates the expression.

bool crp::Executable::is_valid

(

)

const [inline]

Returns true if the command is valid.

Returns:

True if the command is valid

void crp::Executable::operator=

(

const Executable &

executable

)

[inline]

Assignment operator.

Parameters:

executable

Different executable

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Field Documentation

Engine* crp::Executable::engine

Engine.

DPtr crp::Executable::expression

Expression to evaluate.

SPtr<Scope> crp::Executable::scope

Evaluation scope.

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

• engine.h