class DuckDB::ExtractedStatementsImpl

static VALUE duckdb_extracted_statements_initialize(VALUE self, VALUE con, VALUE query) {
    rubyDuckDBConnection *pcon;
    rubyDuckDBExtractedStatements *ctx;
    char *pquery;
    const char *error;

    if (rb_obj_is_kind_of(con, cDuckDBConnection) != Qtrue) {
        rb_raise(rb_eTypeError, "1st argument must be DuckDB::Connection");
    }

    pquery = StringValuePtr(query);
    pcon = get_struct_connection(con);
    TypedData_Get_Struct(self, rubyDuckDBExtractedStatements, &extract_statements_data_type, ctx);

    ctx->num_statements = duckdb_extract_statements(pcon->con, pquery, &(ctx->extracted_statements));

    if (ctx->num_statements == 0) {
        error = duckdb_extract_statements_error(ctx->extracted_statements);
        rb_raise(eDuckDBError, "%s", error ? error : "Failed to extract statements(Database connection closed?).");
    }

    return self;
}

static VALUE duckdb_extracted_statements_destroy(VALUE self) {
    rubyDuckDBExtractedStatements *ctx;

    TypedData_Get_Struct(self, rubyDuckDBExtractedStatements, &extract_statements_data_type, ctx);

    duckdb_destroy_extracted(&(ctx->extracted_statements));

    return Qnil;
}

static VALUE duckdb_extracted_statements_prepared_statement(VALUE self, VALUE con, VALUE index) {
    rubyDuckDBConnection *pcon;
    rubyDuckDBExtractedStatements *ctx;

    if (rb_obj_is_kind_of(con, cDuckDBConnection) != Qtrue) {
        rb_raise(rb_eTypeError, "1st argument must be DuckDB::Connection");
    }
    pcon = get_struct_connection(con);
    TypedData_Get_Struct(self, rubyDuckDBExtractedStatements, &extract_statements_data_type, ctx);

    return rbduckdb_prepared_statement_new(pcon->con, ctx->extracted_statements, NUM2ULL(index));
}

static VALUE duckdb_extracted_statements_size(VALUE self) {
    rubyDuckDBExtractedStatements *ctx;

    TypedData_Get_Struct(self, rubyDuckDBExtractedStatements, &extract_statements_data_type, ctx);

    return ULL2NUM(ctx->num_statements);
}