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//
// Copyright (c) 2019 Vinnie Falco (vinnie.falco@gmail.com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
// Official repository: https://github.com/boostorg/json
//
#include <boost/json/monotonic_resource.hpp>
#include <boost/json/parse.hpp>
#include <boost/json/static_resource.hpp>
#include <boost/json/storage_ptr.hpp>
#include <boost/json/value.hpp>
#include <iostream>
#include "test_suite.hpp"
namespace boost {
namespace json {
//----------------------------------------------------------
static void set1() {
//----------------------------------------------------------
{
//[doc_storage_ptr_1
storage_ptr sp1;
storage_ptr sp2;
assert( sp1.get() != nullptr ); // always points to a valid resource
assert( sp1.get() == sp2.get() ); // both point to the default resource
assert( *sp1.get() == *sp2.get() ); // the default resource compares equal
//]
}
//----------------------------------------------------------
{
//[doc_storage_ptr_2
array arr; // default construction
object obj;
string str;
value jv;
assert( jv.storage().get() == storage_ptr().get() ); // uses the default memory resource
assert( jv.storage().get() == arr.storage().get() ); // both point to the default resource
assert( *arr.storage() == *obj.storage() ); // containers use equivalent resources
//]
}
//----------------------------------------------------------
{
//[doc_storage_ptr_3
monotonic_resource mr;
value const jv = parse( "[1,2,3]", &mr );
//]
}
//----------------------------------------------------------
} // set1
//----------------------------------------------------------
//[doc_storage_ptr_4
value parse_value( string_view s)
{
return parse( s, make_shared_resource< monotonic_resource >() );
}
//]
//----------------------------------------------------------
//[doc_storage_ptr_5
template< class Handler >
void do_rpc( string_view s, Handler&& h )
{
unsigned char buffer[ 8192 ]; // Small stack buffer to avoid most allocations during parse
monotonic_resource mr( buffer ); // This resource will use our local buffer first
value const jv = parse( s, &mr ); // Parse the input string into a value that uses our resource
h( jv ); // Call the handler to perform the RPC command
}
//]
//----------------------------------------------------------
void set2() {
//----------------------------------------------------------
{
//[doc_storage_ptr_6
unsigned char buffer[ 8192 ];
static_resource mr( buffer ); // The resource will use our local buffer
//]
}
//----------------------------------------------------------
{
//[doc_storage_ptr_7
monotonic_resource mr;
array arr( &mr ); // construct an array using our resource
arr.emplace_back( "boost" ); // insert a string
assert( *arr[0].as_string().storage() == mr ); // the resource is propagated to the string
//]
}
//----------------------------------------------------------
{
//[doc_storage_ptr_8
{
monotonic_resource mr;
array arr( &mr ); // construct an array using our resource
assert( ! arr.storage().is_shared() ); // no shared ownership
}
//]
}
//----------------------------------------------------------
{
//[doc_storage_ptr_9
storage_ptr sp = make_shared_resource< monotonic_resource >();
string str( sp );
assert( sp.is_shared() ); // shared ownership
assert( str.storage().is_shared() ); // shared ownership
//]
}
//----------------------------------------------------------
} // set2
//----------------------------------------------------------
//[doc_storage_ptr_10
class logging_resource : public memory_resource
{
private:
void* do_allocate( std::size_t bytes, std::size_t align ) override
{
std::cout << "Allocating " << bytes << " bytes with alignment " << align << '\n';
return ::operator new( bytes );
}
void do_deallocate( void* ptr, std::size_t bytes, std::size_t align ) override
{
std::cout << "Deallocating " << bytes << " bytes with alignment " << align << " @ address " << ptr << '\n';
return ::operator delete( ptr );
}
bool do_is_equal( memory_resource const& other ) const noexcept override
{
// since the global allocation and deallocation functions are used,
// any instance of a logging_resource can deallocate memory allocated
// by another instance of a logging_resource
return dynamic_cast< logging_resource const* >( &other ) != nullptr;
}
};
//]
//----------------------------------------------------------
class doc_storage_ptr_test
{
public:
void
run()
{
(void)&set1;
BOOST_TEST_PASS();
}
};
TEST_SUITE(doc_storage_ptr_test, "boost.json.doc_storage_ptr");
} // namespace json
} // namespace boost
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