isc::dhcp::TokenAnd Class Reference

Token that represents logical and operator. More...

#include <token.h>

Inheritance diagram for isc::dhcp::TokenAnd:

Public Member Functions
	TokenAnd ()
	Constructor (does nothing)
virtual unsigned	evaluate (Pkt &pkt, ValueStack &values)
	Logical and.
Public Member Functions inherited from isc::dhcp::Token
virtual	~Token ()
	Virtual destructor.
virtual unsigned	getLabel () const
	Return the label of this token.

Additional Inherited Members
Static Public Member Functions inherited from isc::dhcp::Token
static bool	toBool (std::string value)
	Coverts a (string) value to a boolean.

Detailed Description

Token that represents logical and operator.

Note

Strict version i.e. evaluating right branch even left is false

For example "option[10].exists and option[11].exists"

Definition at line 1036 of file token.h.

Constructor & Destructor Documentation

TokenAnd()

isc::dhcp::TokenAnd::TokenAnd ( )

inline

Constructor (does nothing)

Definition at line 1039 of file token.h.

Member Function Documentation

evaluate()

unsigned TokenAnd::evaluate ( Pkt & pkt, ValueStack & values )

virtual

Logical and.

Evaluation does not use packet information, but rather consumes the last two parameters. It returns "true" if and only if both are "true". It requires at least two logical (i.e., "true" or "false') values present on stack. @throw EvalBadStack if there are less than 2 values on stack @throw EvalTypeError if one of the 2 values on stack is not "true" or "false"

Parameters

pkt	(unused)
values	- stack of values (2 arguments will be popped, 1 result will be pushed)

Returns

0 which means evaluate next token if any.

Implements isc::dhcp::Token.

Definition at line 1089 of file token.cc.

References isc::dhcp::EVAL_DBG_STACK, isc::dhcp::EVAL_DEBUG_AND, isc::dhcp::eval_logger, isc::dhcp::Pkt::getLabel(), isc_throw, LOG_DEBUG, and isc::dhcp::Token::toBool().

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

• token.h
• token.cc