Macro BOOST_CONTRACT_POSTCONDITION

BOOST_CONTRACT_POSTCONDITION — Program postconditions that can be completely disabled at compile-time.

Synopsis

// In header: <boost/contract_macro.hpp>

BOOST_CONTRACT_POSTCONDITION(...)

Description

BOOST_CONTRACT_POSTCONDITION(f) expands to code equivalent to the following (note that no code is generated when BOOST_CONTRACT_NO_POSTCONDITIONS is defined):

#ifndef BOOST_CONTRACT_NO_POSTCONDITIONS
    .postcondition(f)
#endif

Where:

f is the functor called by this library to check postconditions f(...). Assertions within this functor are usually programmed using BOOST_CONTRACT_ASSERT, but any exception thrown by a call to this functor indicates a contract assertion failure (and will result in this library calling boost::contract::postcondition_failure). This functor should capture variables by (constant) references (to access the values they will have at function exit). This functor takes the return value (preferably by const&) as its one single parameter but only for virtual public functions and public functions overrides, otherwise it takes no parameter. (This is a variadic macro parameter so it can contain commas not protected by round parenthesis.)