isc::dhcp::TokenEqual Class Reference

Token that represents equality operator (compares two other tokens) More...

#include <token.h>

Inheritance diagram for isc::dhcp::TokenEqual:

Public Member Functions
	TokenEqual ()
	Constructor (does nothing)
virtual unsigned	evaluate (Pkt &pkt, ValueStack &values)
	Compare two values.
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 equality operator (compares two other tokens)

For example in the expression option[vendor-class].text == "MSFT" this token represents the equal (==) sign.

Definition at line 784 of file token.h.

Constructor & Destructor Documentation

TokenEqual()

isc::dhcp::TokenEqual::TokenEqual ( )

inline

Constructor (does nothing)

Definition at line 787 of file token.h.

Member Function Documentation

evaluate()

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

virtual

Compare two values.

Evaluation does not use packet information, but rather consumes the last two parameters. It does a simple string comparison and sets the value to either "true" or "false". It requires at least two parameters to be present on stack.

Exceptions

EvalBadStack

if there are less than 2 values on stack

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 749 of file token.cc.

References isc::dhcp::EVAL_DBG_STACK, isc::dhcp::EVAL_DEBUG_EQUAL, isc::dhcp::eval_logger, isc::dhcp::Pkt::getLabel(), isc_throw, and LOG_DEBUG.

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

• token.h
• token.cc