Macro BOOST_PROTO_ASSERT_MATCHES

BOOST_PROTO_ASSERT_MATCHES — Assert at compile time that a particular expression matches the specified grammar.

Synopsis

// In header: <boost/proto/debug.hpp>

BOOST_PROTO_ASSERT_MATCHES(expr, Grammar)

Use BOOST_PROTO_ASSERT_MATCHES() to assert at compile-time that an expression matches a grammar.

Example:

typedef proto::plus< proto::terminal< int >, proto::terminal< int > > PlusInts;

BOOST_PROTO_ASSERT_MATCHES( proto::lit(1) + 42, PlusInts );