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Kea 2.7.6
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Kea 2.7.6
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Token that represents concat operator (concatenates two other tokens) More...
#include <token.h>
Inheritance diagram for isc::dhcp::TokenConcat:Public Member Functions | |
| TokenConcat () | |
| Constructor (does nothing) | |
| virtual unsigned | evaluate (Pkt &pkt, ValueStack &values) |
| Concatenate 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. | |
Token that represents concat operator (concatenates two other tokens)
For example in the sub-expression "concat('foo','bar')" the result of the evaluation is "foobar" For user convenience the "'foo' + 'bar'" alternative does the same.
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Concatenate two values.
Evaluation does not use packet information, but rather consumes the last two parameters. It does a simple string concatenation. It requires at least two parameters to be present on stack.
| EvalBadStack | if there are less than 2 values on stack |
| pkt | (unused) |
| values | - stack of values (2 arguments will be popped, 1 result will be pushed) |
Implements isc::dhcp::Token.
Definition at line 964 of file token.cc.
References isc::dhcp::EVAL_DBG_STACK, isc::dhcp::EVAL_DEBUG_CONCAT, isc::dhcp::eval_logger, isc::dhcp::Pkt::getLabel(), isc_throw, and LOG_DEBUG.
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1.12.0