#include <GenericEval.h>

Inheritance diagram for opencog::GenericEval:

Collaboration diagram for opencog::GenericEval:

Public Member Functions
	GenericEval (void)

virtual	~GenericEval ()

virtual bool	input_pending ()

virtual void	clear_pending ()

virtual bool	eval_error (void)

virtual void	begin_eval ()=0

virtual void	eval_expr (const std::string &)=0

virtual std::string	poll_result ()=0

Protected Attributes
std::string	_input_line

bool	_pending_input

bool	_caught_error

Detailed Description

Definition at line 39 of file GenericEval.h.

Constructor & Destructor Documentation

opencog::GenericEval::GenericEval ( void )

inline

Definition at line 47 of file GenericEval.h.

virtual opencog::GenericEval::~GenericEval ( )

inlinevirtual

Definition at line 51 of file GenericEval.h.

Member Function Documentation

virtual void opencog::GenericEval::begin_eval ( )

pure virtual

begin_eval() must be called in the same thread as poll_result() an it must be called before eval_expr(). The eval_expr() method may be called in the same thread, or a different one. The poll_result() method can be called at any time after begin_eval(). The poll_result() method might block, until results are available. It must return the empty string when there are no more results.

Implemented in opencog::PythonEval, and opencog::SchemeEval.

virtual void opencog::GenericEval::clear_pending ( )

inlinevirtual

Clear the error state, the input buffers, etc.

Definition at line 65 of file GenericEval.h.

References _caught_error, _input_line, and _pending_input.

virtual bool opencog::GenericEval::eval_error ( void )

inlinevirtual

Return true if an error occured during the evaluation of the expression

Definition at line 75 of file GenericEval.h.

References _caught_error.

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