#include "trace.hpp"
#include "parser.hpp"

int main()
{
    {
        DECLARE( auto empty = json_parse( "{}" ) );
        ASSERT( empty->length() == 0 );
        ASSERT( empty->type() == json_type::object );

        for ( auto i : { 0, -1, 1 } )
            EXCEPT( std::out_of_range, empty->item_at( i ), "i =", i );

        for ( auto s : { "", "0" } )
            EXCEPT( std::out_of_range, empty->item_at( s ), "s =", s );

        CLEAR();
    }

    for ( auto s : { "{", "}", "}{", "{{}", "}}{", "key" } )
        EXCEPT( json_error, json_parse( s ), "s =", s );

    {
        DECLARE( auto nested = json_parse( "{empty: {}}" ) );
        ASSERT( nested->length() == 1 );
        ASSERT( nested->type() == json_type::object );

        DECLARE( const auto &empty_0 = nested->item_at( 0 ) );
        DECLARE( const auto &empty_1 = nested->item_at( "empty" ) );
        ASSERT( empty_0.length() == 0 );
        ASSERT( empty_0.type() == json_type::object );
        ASSERT( empty_1.length() == 0 );
        ASSERT( empty_1.type() == json_type::object );
    }
}